| INTERDIGITAL TECHNOLOGY CORPORATION Patent applications |
| Patent application number | Title | Published |
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| 20120033580 | RADIO NETWORK CONTROLLER PEER-TO-PEER EXCHANGE OF USER EQUIPMENT MEASUREMENT INFORMATION - A wideband code division multiple access (W-CDMA) first radio network controller (RNC) includes a logic device configured to control a measurement request device such that the measurement request device requests common measurements using a global procedures module of a radio network sublayer application part (RNSAP) procedures over a radio network controller interface (IUR) for a second RNC, the common measurements including received total wideband power, load and global positioning system (GPS) timing information. The logic device is configured to control the measurement request device such that the measurement request device requests measurements from the second RNC using RNSAP procedures over the IUR, the measurements including received signal code power (RSCP) of a common control physical channel (CCPCH) and interference signal code power (ISCP). | 02-09-2012 |
| 20120027053 | METHOD AND APPARATUS FOR REDUCING MULTI-USER PROCESSING IN WIRELESS COMMUNICATION SYSTEMS - A method and apparatus is disclosed for reducing multi-user processing at the receiver in wireless communication systems. Detected codes are grouped according to channel impulse response and a parent code is identified for each group of detected codes. A matrix A is constructed and joint detection is performed using the identified parent codes. Data symbols of the detected codes are obtained from the data symbols of the identified parent codes. | 02-02-2012 |
| 20120026904 | METHOD AND APPARATUS FOR SELECTING LINK ADAPTATION PARAMETERS FOR CDMA-BASED WIRELESS COMMUNICATION SYSTEMS - A method and apparatus for selecting a transport format resource combination (TFRC) using an information theoretic approach are provided. The TFRC may be selected in a medium access control (MAC) layer for transmission of data in a code division multiple access (CDMA) wireless communication system. The maximum number of spreading codes available for transmission and the set of possible TFRCs may be determined based on channel characteristics. For each transport block set size (TBSS) in the set of possible TFRCs, a TFRC is selected with the largest number of spreading codes within the maximum number of spreading codes for a corresponding minimum coding rate. The corresponding code rate for each selected TFRCs is compared to a threshold to select a corresponding type of modulation. One of the selected TFRCs is selected to be provided to the physical layer that best matches the CQI and maximizes the TBSS. | 02-02-2012 |
| 20120014353 | WIRELESS COMMUNICATION METHODS AND COMPONENTS THAT IMPLEMENT HANDOFF IN WIRELESS LOCAL AREA NETWORKS - This invention relates to wireless local area networks, and particularly to the IEEE 802.11 family of standards. It consists of a method and apparatus that can be implemented in access points (APs) and subscriber wireless transmit/receive units (WTRUs), in order to allow an AP to initiate re-association of a WTRU to itself or a different AP. The invention improves the robustness of the network by enabling more efficient load balancing, congestion control, and roaming, without compromising the user experience. | 01-19-2012 |
| 20120014351 | SYSTEM FOR CONTEXT TRANSFER FOR WIRELESS INTERNET DEVICES - A system and method for feature context transfer store all currently “active” feature contexts locally at an Access Router (AR), and store all “inactive” feature contexts centrally in a main database. The main database can be accessed by all the ARs within the same administrative domain. When a new microflow becomes active, its active feature contexts are brought from the main database and loaded into the local directory, thus replacing any inactive feature contexts that are not needed at the time. | 01-19-2012 |
| 20120008617 | HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WTRU AND METHOD - A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method are disclosed. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data. | 01-12-2012 |
| 20120008608 | METHOD, SYSTEM AND COMPONENTS FOR FACILITATING WIRELESS COMMUNICATION IN A SECTORED SERVICE AREA - A access point (AP) during wireless communication with at least one wireless transmit/receive unit (WTRU), transmits a beacon signal periodically among a plurality of sectors, each sector having its own sector identity, the beacon signal being periodically received at least once in a beacon period and the beacon period comprising a plurality of beacon service periods for all sectors. The AP determines a scheduling value to indicate a number of inactive beacon periods for a first sector to at least one WTRU located in the first sector. The scheduling value is transmitted with the sector identity for the first sector, such that a variable beacon period is established for the first sector, enabling the at least one WTRU located in the first sector to enter a sleep mode for an adjustable period of time. | 01-12-2012 |
| 20120008598 | METHOD AND APPARATUS FOR PERFORMING AN ACCESS PROCEDURE - A base station for controlling transmission power during the establishment of a communication channel utilizes the reception of a short code during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional access code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The power of the short code is quickly increased until the signal is detected by the base station. Once the base station detects the short code, it transmits an indication that the short code has been detected. | 01-12-2012 |
| 20120003961 | METHOD AND APPARATUS FOR BASE STATION SELF-CONFIGURATION - Disclosed is method and apparatus for operation of a base station in wireless communications, including self-configuration of the base station for secure and authenticated communications with other base stations. | 01-05-2012 |
| 20120002642 | ENHANCED UPLINK OPERATION IN SOFT HANDOVER - A method and system for an enhanced uplink (EU) operation in a wireless communication system during soft handover. The system comprises a wireless transmit/receive unit (WTRU), at least two Node-Bs, and a radio network controller (RNC). One Node-B may be designated as a primary Node-B, and the primary Node-B may control EU operation during soft handover including uplink scheduling and hybrid automatic repeat request (H-ARQ). Soft buffer corruption is avoided during soft handover by controlling H-ARQ by the primary Node-B. Alternatively, an RNC may control EU operation during soft handover including H-ARQ. In this case, an RNC generates final acknowledge/non-acknowledge (ACK/NACK) decision based on the error check results of the Node-Bs. | 01-05-2012 |
| 20110320922 | METHOD AND APPARATUS FOR ENCODING AND DECODING HIGH SPEED SHARED CONTROL CHANNEL - A method and apparatus for encoding and decoding high speed shared control channel (HS-SCCH) data are disclosed. For part 1 data encoding, a mask may be generated using a wireless transmit/receive unit (WTRU) identity (ID) and a generator matrix with a maximum minimum Hamming distance. For part 2 data encoding, cyclic redundancy check (CRC) bits are generated based on part 1 data and part 2 data. The number of CRC bits is less than the WTRU ID. The CRC bits and/or the part 2 data are masked with a mask. The mask may be a WTRU ID or a punctured WTRU ID of length equal to the CRC bits. The mask may be generated using the WTRU ID and a generator matrix with a maximum minimum Hamming distance. The masking may be performed after encoding or rate matching. | 12-29-2011 |
| 20110317609 | METHODS AND SYSTEMS FOR PROVIDING RELIABLE MULTICAST SERVICE IN A WLAN SYSTEM - A method for acknowledged multicast operation in a wireless network having a base station and at least one wireless transmit/receive unit (WTRU) includes the base station transmitting a first multicast signal during a first scheduled interval, the at least one WTRU receiving the first multicast signal during the first scheduled interval, and the at least one WTRU transmitting an acknowledgement signal to the base station during a second scheduled interval. | 12-29-2011 |
| 20110317546 | METHOD AND APPARATUS FOR FORWARDING NON-CONSECUTIVE DATA BLOCKS IN ENHANCED UPLINK TRANSMISSIONS - A method and apparatus for forwarding non-consecutive data blocks in enhanced uplink (EU) transmissions. A wireless transmit/receive unit (WTRU) and one or more Node-Bs include one or more automatic repeat request (ARQ)/hybrid-ARQ (H-ARQ) processes for supporting an enhanced dedicated channel (E-DCH). Data blocks transmitted by the WTRU are re-ordered in a re-ordering entity located in the Node-B(s) or a radio network controller (RNC). Once a missing data block is identified, a data forwarding timer in the Node-B(s) or RNC is initiated and subsequent WTRU transmissions are monitored to determine whether the missing data block has been discarded by the WTRU. Upon recognition of the discard of the missing data block, the non-consecutive data blocks are forwarded to higher layers. | 12-29-2011 |
| 20110310940 | RANDOM ACCESS CHANNEL FOR OFDM-MIMO SYSTEM - In orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) systems, a wireless transmit/receive unit (WTRU) selects a random access channel (RACH) and a phase for a constant amplitude zero auto correlation (CAZAC) sequence for RACH transmission. The WTRU then transmits a RACH transmission to a Node B via the selected RACH. Once the RACH transmission is detected, the Node B sends an acknowledgement (ACK) to the WTRU over an ACK channel. The Node B may transmit the ACK on a shared channel. The WTRU may ramp up transmit power while the RACH transmission is transmitted, or steps up transmit power of a subsequent RACH transmission. The RACH transmission and data transmission may be either time multiplexed or frequency multiplexed. A plurality of RACHs may be defined and one of the defined RACHs may be selected randomly or based on predetermined criteria. | 12-22-2011 |
| 20110310876 | SYSTEM FOR APPLICATION SERVER AUTONOMOUS ACCESS ACROSS DIFFERENT TYPES OF ACCESS TECHNOLOGY NETWORKS - An Application Server Autonomous Access (ASAA) system for providing autonomous access to a wireless infrastructure by devices employing different types of access technology. The system includes a server, having an associated data storage device, for storing at least one policy, and a plurality of subnetworks, coupled to server, for providing access to the server. The plurality of subnetworks employ at least two different types of access technology. A plurality of wireless transmit/receive units (WTRUs) are wirelessly coupled to at least one of the subnetworks. The server monitors the wireless coupling and, depending upon the at least one policy, switches the WTRUs between different ones of the subnetworks. | 12-22-2011 |
| 20110310807 | METHODS AND SYSTEMS FOR PROVIDING EFFICIENT OPERATION OF MULTIPLE MODES IN A WLAN SYSTEM - A method and apparatus that applies medium access control (MAC) transmission opportunity (TXOP) protection for multiple mode operation in a WLAN system. In particular, MAC mechanisms are defined to support multiple mode CTS frames, and multiple mode CF-End frames sent by the AP, each in a format appropriate for the corresponding mode which may also apply to a single mode. MAC mechanisms permit truncation of TXOP duration for releasing the unused portion of the TXOP when no further data for transmission is available. Release of unused protected TXOP is possible for both protected AP transmissions and STA transmissions. | 12-22-2011 |
| 20110305139 | METHOD AND APPARATUS FOR DETERMINING AND MANAGING CONGESTION IN A WIRELESS COMMUNICATIONS SYSTEM - A method and apparatus may be used for network management via MAC measurements. The measurements may include WTRU uplink traffic loading measurement, and an AP service loading measurement. The measurements may be applicable to at least to layers | 12-15-2011 |
| 20110299520 | SYNCHRONIZATION FOR EXTENDING BATTERY LIFE - The present invention discloses a method and system for efficiently supporting data calls to WTRUs in systems that also support telephony. Various types of data is transmitted on a known schedule which is tightly synchronized to a predetermined time frame. The WTRUs synchronize their wake-up periods to search for data at times when data may or will actually be transmitted to them. | 12-08-2011 |
| 20110299497 | WIRELESS COMMUNICATION METHOD OF SELECTING AN ENHANCED UPLINK TRANSPORT FORMAT COMBINATION - Methods of selecting an enhanced uplink (EU) transport format combination (E-TFC) are disclosed. A maximum number of bits of scheduled data for an upcoming transmission may be determined, wherein the highest value is lower or equal to: | 12-08-2011 |
| 20110299450 | METHOD AND APPARATUS FOR MULTICASTING WITH FEEDBACK INFORMATION - A method for multicasting a packet begins by providing a buffer for each of two user equipments (UEs) in communication with a base station. A determination is made whether there is a previously unsent packet at the base station. A second determination is made whether both UE buffers are non-empty. A non-empty buffer is flushed if there is no previously unsent packet and if one of the buffers is non-empty. A packet is selected to be transmitted if there is a previously unsent packet or if both buffers are non-empty. The buffers are updated based on feedback received from the UEs. | 12-08-2011 |
| 20110299447 | RELIABILITY DETECTION OF CHANNEL QUALITY INDICATOR (CQI) AND APPLICATION TO OUTER LOOP POWER CONTROL - A method for determining a channel quality in wireless communications includes receiving a high speed shared control channel (HS-SICH) transmission. An expected number of HS-SICH transmissions and a number of unsuccessful HS-SICH transmissions are counted. The number of unsuccessful HS-SICH transmissions includes a number of failed HS-SICH transmissions and a number of missed HS-SICH transmissions. The expected number of HS-SICH transmissions and the number of unsuccessful HS-SICH transmissions over a fixed time period are periodically reported, whereby the reporting is an indication of the channel quality. | 12-08-2011 |
| 20110292848 | METHOD AND SYSTEM WHEREIN TIMESLOTS ALLOCATED FOR COMMON CONTROL CHANNELS MAY BE REUSED FOR USER TRAFFIC - A network apparatus for use in a wireless time division duplex (TDD) code division multiple access communication system includes a processor configured to allocate a time slot in a frame for a plurality of cells for transmission of data over a forward access channel (FACH). Each of the plurality of cells is allocated a different time slot in the frame for transmission of the data over the FACH. | 12-01-2011 |
| 20110280210 | METHOD AND APPARATUS FOR ACCESSING AN UPLINK RANDOM ACCESS CHANNEL IN A SINGULAR CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM - A method and apparatus for accessing a contention-based uplink random access channel (RACH) in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. A wireless transmit/receive unit (WTRU) randomly selects a RACH subchannel and a signature among a plurality of available RACH subchannels and signatures. The WTRU transmits a preamble using the selected signature via the selected RACH subchannel at a predetermined or computed transmission power. A base station monitors the RACH to detect the preamble and sends an acquisition indicator (AI) to the WTRU when a signature is detected on the RACH. When receiving a positive acknowledgement, the WTRU sends a message part to the base station. If receiving a negative acknowledgement or no response, the WTRU retransmits the preamble. | 11-17-2011 |
| 20110280136 | METHOD FOR ENHANCED DEDICATED CHANNEL (E-DCH) TRANSMISSION OVERLAP DETECTION FOR COMPRESSED MODE GAP SLOTS - A method and apparatus for detecting an overlap of an E-DCH transmission or retransmission in TTIs that overlap with an assigned uplink compressed mode gap is disclosed. More specifically, detecting an overlap of an E-DCH transmission or retransmission in TTIs that overlap with an uplink compressed mode gap assigned by a Node B when a WTRU is configured with a 2 ms TTI is disclosed. After detecting the overlap of the E-DCH transmission or retransmission and the uplink compressed mode gap, the E-DCH transmission or retransmission is paused. | 11-17-2011 |
| 20110274028 | METHOD AND WIRELESS TRANSMIT/RECEIVE UNIT (WTRU) FOR RECEIVING MULTIMEDIA BROADCAST/MULTICAST SERVICE - A method and wireless transmit/receive unit (WTRU) for receiving a multimedia broadcast/multicast service (MBMS) data is disclosed. A WTRU receives MBMS data segments from a first MBMS transmitting source along with segmentation information. The WTRU receives MBMS data segments and segmentation information from a second MBMS transmitting source. The MBMS data segments from the first MBMS transmitting source and the MBMS data segments from the second MBMS transmitting source are received in different order. The WTRU reassembles the MBMS data segments based on the segmentation information received from the first MBMS transmitting source and the second MBMS transmitting source. | 11-10-2011 |
| 20110271166 | PIPELINE ARCHITECTURE FOR MAXIMUM A POSTERIORI (MAP) DECODERS - The sliding window approach to pipeline maximum a posteriori (MAP) decoder architecture is modified to decrease processing time. Once the forward metrics have been calculated for he first sliding window of the decoder, the reverse metrics for each window are calculated while the forward metrics for the next window are calculated. As each new forward metric is calculated and stored into memory, the forward metric from the previous window is read from memory for use with reverse metric being calculated in calculating extrinsic value. Each forward metric for use in calculating an extrinsic value is written to the same memory location. The calculations can be reversed, reverse metrics being calculated first, followed by reverse metric calculations. Although this architecture was developed for a turbo decoder, all convolution codes can use the MAP algorithm of the present invention. | 11-03-2011 |
| 20110270608 | METHOD AND APPARATUS FOR RECEIVING AN ENCODED SPEECH SIGNAL - A method and apparatus for processing speech in a wireless communication system uses CELP speech encoded signals. A decoder receives encoded speech including a code index, a code index gain, a pitch lag, a pitch gain, and a line spectral pair (LSP) index. An innovation codevector and an adaptive codevector are determined and scaled. An excitation sequence is generated. Reconstructed speech is then output based on the excitation sequence and LSP index. | 11-03-2011 |
| 20110255475 | USER EQUIPMENT IDENTIFICATION SPECIFIC SCRAMBLING - A base station for use in a code division multiple access communication system comprises circuitry configured to process a user equipment identification (UE ID) by ½ rate convolutionally encoding the UE ID to produce a sequence. The sequence is used by the base station for scrambling a high speed shared control channel (HS-SCCH). The base station is configured to transmit a wireless signal. The wireless signal provides the user equipment with payload data carried on a high speed physical downlink shared channel (HS-PDSCH). The HS-PDSCH is associated with the HS-SCCH. | 10-20-2011 |
| 20110252241 | USING WATERMARKING TO REDUCE COMMUNICATION OVERHEAD - A method for reducing overhead when transmitting and receiving an Internet Protocol (IP) packet by a device begins with receiving of the IP packet by the device. In the packet, an IP address of the packet has been removed and replaced with a watermarking signature based on the IP address. The IP address is obtained using the watermarking signature. The IP address is attached to the packet and the packet is forwarded by the device to a destination over a network using the IP address. | 10-13-2011 |
| 20110250850 | SYSTEM AND METHOD FOR DETERMINING AIR INTERFACE INFORMATION FOR RADIO RESOURCE MANAGEMENT IN WIRELESS COMMUNICATIONS - A method for determining values for use by radio resource management functions is disclosed. Air interface actual values and predictive values are obtained and stored. A timestamp indicating a time when each actual value or predictive value is obtained is generated and stored. The actual values and the predictive values are processed to provide an output value. | 10-13-2011 |
| 20110243259 | WEIGHTED OPEN LOOP POWER CONTROL TRANSMITTER - A weighted open loop power control transmitter for controlling transmission power levels using a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication includes a demodulator configured to receive a transmitted signal from the receiver, a channel estimation device, a data estimation device, and a weighted open loop power controller. The weighted open loop power controller includes a power measurement device, a pathloss estimation device configured to receive an interpreted power level from the data estimation device and estimate the pathloss and update a long term average of the pathloss, a quality measurement device, and a transmit power calculation device for determining the transmitter's power level and to control the receiver's amplifier. | 10-06-2011 |
| 20110235617 | CENTRALIZED RADIO NETWORK CONTROLLER - In a radio access network, novel systems and methods reduce processing delay, and improve integration with IP networks, by separating user data from connection management and control data at a Node B or at a base station. The user data are routed to an IP (Internet Protocol) switch, whereas the connection management and control data are routed to a centralized radio network controller (RNC). Pursuant to a second embodiment of the invention, a centralized RNC provides improved radio resource management (RRM) functionality by handing all connection management and control data for a plurality of Node B's, thereby simplifying the switching of user data throughout the radio access network. Pursuant to a third embodiment of the invention, a smart IP switch is equipped to switch user data without core network (CN) involvement. Downlink user data are switched independently of uplink user data. | 09-29-2011 |
| 20110235516 | WIRELESS COMMUNICATION METHOD AND SYSTEM FOR ROUTING PACKETS VIA INTRA-MESH AND EXTRA-MESH ROUTES - A method and apparatus for routing a packet implemented in a mesh point (MP) of a wireless network are described. According to the method, a plurality of intra-mesh and extra-mesh routes are compared. One of the plurality of intra-mesh and extra-mesh routes is selected for transmission of the packet based on at least one criterion. The packet is transmitted over the selected one of the plurality of intra-mesh and extra-mesh routes. | 09-29-2011 |
| 20110235513 | PACKET SCHEDULING IN A WIRELESS LOCAL AREA NETWORK - A method is described including deriving, by a wireless device, a first value for each of a plurality of queues. The first value is derived from a second value and a delay between scheduling transmissions for that data queue. The second value is associated with a data rate, and each of the plurality of data queues is associated with a priority. Data is selected by the wireless device from at least one of the priority queues for transmission based on the derived first value. Also described is a wireless device with a plurality of data cues and circuitry configured for each of the plurality of cues to derive the first value and to select data from at least one of the priority queues for transmission based on the derived first value. | 09-29-2011 |
| 20110228819 | METHOD AND APPARATUS FOR SWITCHING OPERATING MODES OF A RECEIVER - In a wireless communication system, a method and apparatus switches operating modes of a receiver receiving data and operating in a first mode. The method comprises determining whether a criteria is met to switch the operating mode of the receiver. The operating mode of the receiver is switched from the first mode to a second mode if the criteria is met. | 09-22-2011 |
| 20110228816 | SETTING A TRANSMISSION POWER LEVEL FOR A MOBILE UNIT - A spread signal is produced having an adjustable spread spectrum. A data signal is provided for transmission. The data signal is processed to have a first spread spectrum. The processed first spread spectrum data signal is filtered to have one out of a plurality of spread spectrums. The filtering capable of producing a signal having a spread spectrum of any of the plurality of spread spectrums. The filtered one spread spectrum data signal is transmitted. | 09-22-2011 |
| 20110228710 | INTERFERENCE CANCELLATION IN A SPREAD SPECTRUM COMMUNICATION SYSTEM - A code division multiple access communication system transmits a pilot and traffic signal over a shared spectrum. The pilot and traffic signal have an associated code and are received over the shared spectrum. The received signals are sampled and the samples are delayed to produce a window. A weighted value for each despread pilot code window sample is determined using an adaptive algorithm. Each window sample is despread with a traffic code. Each despread traffic code window sample is weighted according to a weight corresponding to its respective pilot code sample. | 09-22-2011 |
| 20110227792 | METHOD AND SYSTEM FOR POSITIONING MOBILE UNITS BASED ON ANGLE MEASUREMENTS - A method and system for positioning mobile units using angle measurements taken by neighboring mobile units is disclosed. A selected mobile unit and mobile units in the vicinity of the selected mobile unit are selectively instructed to measure and report information related to the position of the selected mobile unit. The reported information is used to compute a position of the selected mobile unit. | 09-22-2011 |
| 20110223957 | BASE STATION WITH IMPROVED CHANNEL QUALITY PREDICTION FOR WIRELESS COMMUNICATION - A base station with improved performance through channel quality prediction employing link adaption techniques including a receiver which makes selective measurements on downlink transmissions, and then stores one or more of the measurements or a channel quality indicator derived therefrom. The receiver then retrieves one or more of the past measurements (or the past channel quality estimates themselves), and combines it with current measurements (or the current channel quality estimate), to predict what the channel quality will be at some future time and derive a predictive channel quality indicator (CQI). This predictive CQI, derived from both current channel measurements and at least one past channel measurement, is then sent to the transmitter for use in updating transmission parameters. | 09-15-2011 |
| 20110222617 | METHOD FOR PERFORMING WIRELESS SWITCHING - A wireless communication system includes an infrastructure device for transmitting and receiving communications to and from a plurality of user terminals. Each user terminal includes a receiver and a controller that receives a first orthogonal frequency division multiplexing (OFDM) signal on a first carrier frequency that has assignment information indicating a second carrier frequency to transmit uplink data and beam forming information. In response to the assignment information, a transmitter of the user terminal transmits a second OFDM signal on the second carrier frequency using a beam indicated in the beam forming information. | 09-15-2011 |
| 20110211474 | METHOD AND APPARATUS FOR CALIBRATION AND CHANNEL STATE FEEDBACK TO SUPPORT TRANSMIT BEAMFORMING IN A MIMO SYSTEM - A method and apparatus for calibration and channel state feedback to support transmit beamforming in a multiple-input multiple-output (MIMO) system are disclosed. For radio frequency (RF) calibration, a first station (STA) sends a calibration request to a second STA, and the second STA sends a sounding packet to the first STA. The first STA receives the sounding packet, performs at least one channel measurement and performs calibration based on the channel measurement. For channel state feedback, the first STA sends a channel state feedback request to the second STA. The second STA sends a sounding packet to the first STA. The first STA receives the sounding packet and performs at least one channel measurement with the sounding packet. The first STA then calculates a steering matrix for transmit beamforming based on the channel measurement. | 09-01-2011 |
| 20110206015 | METHOD AND APPARATUS FOR REDUCING THE PROCESSING RATE OF A CHIP-LEVEL EQUALIZATION RECEIVER - A method and apparatus for reducing the processing rate when performing chip-level equalization (CLE) in a code division multiple access (CDMA) receiver which includes an equalizer filter. Signals received by at least one antenna of the receiver are sampled at M times the chip rate. Each sample stream is split into M sample data streams at the chip rate. Multipath combining is preferably performed on each split sample data stream. The sample data streams are then combined into one combined sample data stream at the chip rate. The equalizer filter performs equalization on the combined sample stream at the chip rate. Filter coefficients are adjusted by adding a correction term to the filter coefficients utilized by the equalizer filter for a previous iteration. | 08-25-2011 |
| 20110205992 | METHOD AND SYSTEM FOR PROVIDING CHANNEL ASSIGNMENT INFORMATION USED TO SUPPORT UPLINK AND DOWNLINK CHANNELS - A method and wireless transmit/receive unit (WTRU) for utilizing channel control information associated with enhanced uplink (EU) transmission is disclosed. The WTRU receives information via radio resource control (RRC) signaling and receives downlink (DL) control information for at least EU transmission. The WTRU determines whether the DL control information is intended for the WTRU based at least upon a first forty bit specific code sequence and a second forty bit specific code sequence received in at least one time slot and determines whether the DL control information is the first type or the second type. The WTRU utilizes the DL control information of the first type or the second type for at least EU transmission on a condition that the DL control information is intended for the WTRU. | 08-25-2011 |
| 20110205945 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A PACKET VIA HIGH SPEED DOWNLINK PACKET ACCESS - A method and apparatus for transmitting and receiving a packet via high speed downlink packet access (HSDPA) are disclosed. At least one HSDPA medium access control (MAC-hs) service data unit (SDU) is segmented into a plurality of segments. MAC-hs protocol data units (PDUs) are generated from the segments wherein each MAC-hs PDU includes at least one segment. Each MAC-hs PDU may include one segment from a single MAC-hs SDU. The size of the segments may match to the size of the MAC-hs PDUs minus the size of the header of the MAC-hs PDU. The sizes of the segments may be determined based on the number of segments to which the MAC-hs SDU is segmented. Alternatively, each MAC-hs PDU may include a combination of segments from a plurality of MAC-hs SDUs or a combination of at least one segment from one MAC-hs SDU and at least one entire MAC-hs SDU. | 08-25-2011 |
| 20110200008 | MEDIA INDEPENDENT HANDOVER FOR MOBILITY - A method and apparatus for establishing a wireless communication link using a radio access technology selected from a plurality of radio access technologies are provided. A wireless transmit/receive unit (WTRU) may include a plurality of network devices, each configured to communicate via a different radio access technology. The WTRU may transmit measurement information including measurement reports for the plurality of radio access technologies to a network device. The WTRU may receive a link selection decision from the network device and may establish a wireless communication link in response to the decision. The link may be established for handover of a communication session from another radio access technology. | 08-18-2011 |
| 20110194571 | ADAPTIVE FORWARD POWER CONTROL AND ADAPTIVE REVERSE POWER CONTROL FOR SPREAD-SPECTRUM COMMUNICATIONS - A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement apparatus for adaptive forward power control (APC) from a base station (BS) to a subscriber unit (SU), includes sending from the base station, using spread-spectrum modulation, a BS-spreading code on a forward channel. The subscriber unit despreads the BS-spreading code on the forward channel as a despread signal, determines a first power level P.sub.d which includes power of the despread signal plus noise and a second power level P.sub.N, which includes despread-noise power. The subscriber unit determines a first error signal e.sub.1, from the first power level P.sub.d, the second power level P.sub.N, and a required signal-to-noise ratio SNR.sub.REQ for service type, and a second error signal e.sub.2, from a measure of total received power P.sub.r and an automatic gain control (AGC) set point P.sub.o. The subscriber unit forms a combined error signal from the first error signal e.sub.1, the second error signal e.sub.2, a first weight a.sub.1 and a second weight a.sub.2, and hard limits the combined error signal to form a single APC bit. The APC bit is transmitted to the base station. In response to the APC bit, the base station adjusts transmitter power to the subscriber unit. | 08-11-2011 |
| 20110194470 | EFFICIENT MEMORY ALLOCATION IN A WIRELESS TRANSMIT/RECEIVER UNIT - The present invention allows for effective sharing of the hardware memory of a wireless transmit receive unit (WTRU). The memory will be shared among various buffers of different entities. More particularly, memory will be shared among the MAC reordering buffers and the RLC reception buffers. | 08-11-2011 |
| 20110191532 | PROTOCOL ENGINE FOR PROCESSING DATA IN A WIRELESS TRANSMIT/RECEIVE UNIT - A protocol engine (PE) for processing data within a protocol stack in a wireless transmit/receive unit (WTRU) is disclosed. The protocol stack executes decision and control operations. The data processing and re-formatting which was performed in a conventional protocol stack is removed from the protocol stack and performed by the PE. The protocol stack issues a control word for processing data and the PE processes the data based on the control word. Preferably, the WTRU includes a shared memory and a second memory. The shared memory is used as a data block place holder to transfer the data amongst processing entities. For transmit processing, the PE retrieves source data from the second memory and processes the data while moving the data to the shared memory based on the control word. For receive processing, the PE retrieves received data from the shared memory and processes it while moving the data to the second memory. | 08-04-2011 |
| 20110190015 | BASE STATION SYNCHRONIZATION - A method and apparatus of time synchronizing a plurality of base stations in a wireless communication system includes receiving an indication of a timing associated with a synch burst, where the synch burst is from a mastercell having a better time synchronization quality than other cells and measured by at least one cell other than the mastercell. A request is sent to a wireless transmit/receive unit (WTRU) for a measurement of a base station time of arrival (BSTOA) value of the at least one cell other than the mastercell. The BSTOA value from the WTRU is received and a timing adjustment is sent to the at least one cell other than the mastercell. | 08-04-2011 |
| 20110188546 | WIRELESS TRANSMIT/RECEIVE UNIT (WTRU) FOR CARRIER OFFSET RECOVERY - A wireless transmit/receive unit (WTRU) for carrier offset recovery. An adaptive matched filter produces a filtered signal. A rake receiver provides relative path values of multipath components. A mixer generates channel impulse response estimates. A channel despreader despreads the filtered signal using the pseudo-noise signal generated to produce a despread channel signal of the selected channel. A pilot channel despreader despreads the filtered signal using a pseudo-noise signal generator to produce a despread pilot signal of the pilot channel. A hard decision processor determines a symbol value of the despread channel signal. A complex conjugate processor generates a complex conjugate of the symbol value as a correction signal. A phase-locked loop produces a phase correction signal to recover carrier offset. | 08-04-2011 |
| 20110188477 | HANDOVER IN A WIRELESS LOCAL AREA NETWORK (WLAN) - In triggering a handoff by a wireless transmit/receive unit (WTRU) from a current basic service set (BSS) in a wireless local area network (WLAN), the following are performed. A highest class of traffic service and quality of service (QoS) is determined for the highest class from a basic service set (BSS) beacon. Handoff is terminated and communication is retained with a current BSS when the signal to noise ratio (SNR) or received signal strength (RSS) is greater than a high threshold of the highest class. Other criteria are evaluated to determine whether a handoff is desired when the SNR or RSS is less than the high threshold. | 08-04-2011 |
| 20110182270 | METHOD AND SYSTEM FOR SWITCHING A RADIO ACCESS TECHNOLOGY BETWEEN WIRELESS COMMUNICATION SYSTEMS WITH A MULTI-MODE WIRELESS TRANSMIT/RECEIVE UNIT - A method and system for switching a radio access technology (RAT) between wireless communication systems connected to each other while implementing different RATs with a multi-mode WTRU are disclosed. A plurality of wireless communication systems are deployed with overlapping coverage areas wherein each system implements different RATs and are connected to each other such that a service that is provided by one system may be provided through the other system. Each wireless communication system transmits an indication of the existence of an inter-working wireless communication system in a coverage area of each system. The WTRU receives the indication and information regarding the inter-working wireless communication system. The WTRU then initiates a handoff to the inter-working wireless communication system using the received information, whereby the WTRU continues to receive the same services that the WTRU receives from the currently connected wireless communication system through the inter-working wireless communication system. | 07-28-2011 |
| 20110170589 | APPARATUS FOR ESTIMATING AND CORRECTING BASEBAND FREQUENCY ERROR IN A RECEIVER - An apparatus for estimating and correcting baseband frequency error in a receiver is disclosed. An equalizer performs equalization on a sample data stream and generates filter tap values based on the equalization. An estimated frequency error signal is generated based on at least one of the filter tap values. A rotating phasor is generated based on the estimated frequency error signal. The rotating phasor signal is multiplied with the sample data stream to correct the frequency of the sample data stream. Alternatively, a channel estimator performs channel estimation and generates Rake receive finger weights based on at least one of the finger weights. An estimated frequency error signal is generated based on at least one of the finger weights. | 07-14-2011 |
| 20110170488 | METHOD AND APPARATUS FOR PROVIDING PIGGYBACKED POSITIVE ACKNOWLEDGEMENT/NEGATIVE ACKNOWLEDGEMENT FIELD INDICATOR AND A POLLING INDICATOR - A method and apparatus of providing a piggybacked positive acknowledgement/negative acknowledgement (ACK/NACK) (PAN) field indicator (PANI) and a polling indicator are disclosed. A combined field of a PANI bit, a relative reserved block period (RRBP) bit and an EGPRS supplementary polling (ES/P) field may indicate a polling scheme and a presence of a PAN field. Alternatively, the presence of the PAN field in the data block may be indicated by using a specific training sequence. Alternatively, a forward error correction (FEC) coding may be performed on the data block including the header, and the presence of the PAN field may be indicated by scrambling the encoded bits corresponding the header with a specific scrambling sequence. Alternatively, a header check sequence (HCS) may be generated and the presence of the PAN field is indicated by mixing a predetermined sequence with the HCS. | 07-14-2011 |
| 20110164567 | METHOD AND APPARATUS FOR PERFORMING BLIND SIGNAL SEPARATION IN AN OFDM MIMO SYSTEM - A method and apparatus for performing blind signal separation in an orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) system are disclosed. A transmitter generates a plurality of spatial streams of data and transmits the spatial streams via a plurality of transmit antennas. A receiver receives the transmitted spatial data streams with a plurality of receive antennas and generates a plurality of receive data streams. The receiver performs a discrete Fourier transform (DFT) on each of the receive data streams to generate a plurality of frequency domain data streams. The receiver then performs a blind signal separation on the frequency domain data streams to recover spatial streams transmitted by the transmitter. The blind signal separation may be performed by using an independent component analysis (ICA) in the complex domain. The blind signal separation may be performed individually for each OFDM subcarrier. | 07-07-2011 |
| 20110161673 | METHOD AND APPARATUS FOR ENHANCING SECURITY OF WIRELESS COMMUNICATIONS - The present invention is related to a method and apparatus for enhancing security of communications. The apparatus comprises a security processing unit, a data processing unit, a cross-layer watermarking unit, and optionally a smart antenna processor. The security processing unit generates a token/key to be used in watermarking and sends a node security policy to other components. The data processing unit generates user data. The cross-layer watermarking unit includes at least one of Layer-2/3, Layer-1 and Layer-0. Each layer performs a different scheme or degree of watermarking. The cross-layer watermarking unit embeds the token/key into the user data transmission on at least one of the layers selectively in accordance with a security policy. | 06-30-2011 |
| 20110159908 | DYNAMIC CHANNEL QUALITY MEASUREMENT PROCEDURE IMPLEMENTED IN A WIRELESS DIGITAL COMMUNICATION SYSTEM TO PRIORITIZE THE FORWARDING OF DOWNLINK DATA - A wireless digital communication system includes a base station in communication with a plurality of user equipment mobile terminals (UEs). The system prioritizes the forwarding of blocks of downlink data to designated ones of the UEs. The system employs adaptive modulation and coding (AM&C) to achieve improved radio resource utilization and provides optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink (DL) channel quality measurements only from those mobile terminals (UEs) with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs. | 06-30-2011 |
| 20110159900 | METHOD AND APPARATUS FOR PROVIDING BIASING CRITERIA FOR BINARY DECISIONS FOR USE IN WIRELESS COMMUNICATIONS TO ENHANCE PROTECTION - A criterion for biasing a binary decision requiring an unequal protection which utilizes a measured signal to interference ratio (SIR). The SIR may be derived from a determination of channel estimation. The SIR is compared against a threshold, the threshold being selected to bias the decision toward a not acknowledge (NACK) as opposed to an acknowledge (ACK) determination. The technique is advantageous for providing biased binary decisions for high speed downlink packets (HSDP) but may be utilized for both uplink and downlink applications. | 06-30-2011 |
| 20110159899 | OUTER LOOP POWER CONTROL FOR WIRELESS COMMUNICATIONS - A base station configured for outer loop power control receives an uplink dedicated channel transmission from a wireless transmit/receive unit. The base station transmits transmit power control commands in response to the received uplink channel transmission and determines if the wireless transmit/receive unit is in a discontinuous transmission mode. The base station adjusts a target SIR based on which transmission mode for the wireless transmit/receive unit is detected. The value for the transmit power control command is derived from the adjusted target SIR. | 06-30-2011 |
| 20110159883 | SIGNALING CONNECTION ADMISSION CONTROL IN A WIRELESS NETWORK - A method for admission control of control plane signaling requests includes receiving a signaling request. Upon receipt of the signaling connection request, a first determination is performed to determine whether to provide admission to common resources. When the first determination is negative, a second determination is performed to determine whether to provide admission to dedicated resources. When the second determination is negative, the signaling request is rejected. When the second determination is positive, the request is admitted to dedicated resources. When the first determination is positive, a third determination is performed to determine whether the quality of the signaling request is high or low. If the quality of the request is high, the signaling request is admitted to common resources. When the quality is low, a fourth determination is performed to determine whether to provide admission to dedicated resources. If the fourth determination is positive, the request is admitted to dedicated resources. If the fourth determination is negative, the request is admitted to common resources. | 06-30-2011 |
| 20110158202 | CODE DIVISION MULTIPLE ACCESS (CDMA) COMMUNICATION SYSTEM - A subscriber unit for use in a multiple access spread-spectrum communication system includes a spread spectrum radio interface, responsive to a rate function signal from a base station, and first and second despreaders. The base station assigns the rate function spread-spectrum message channels and the first despreader recovers and modifies an information signal one of the spread spectrum message channels. The information channel mode is then modified for processing by the second despreader, with the second despreader supporting a different information signal rate. The subscriber unit has a capability of communicating with a dynamically changing a transmission rate of an information signal which includes multiple spread spectrum message channels. The system includes a closed loop power control system for maintaining a minimum system transmit power level for a radio carrier station and the subscriber units, and system capacity management for maintaining a maximum number of active subscriber units for improved system performance. | 06-30-2011 |
| 20110158197 | METHOD AND APPARATUS FOR EFFICIENT OPERATION OF AN ENHANCED DEDICATED CHANNEL - A method for processing enhanced dedicated channel (E-DCH) data in a wireless transmit/receive unit (WTRU) includes sending two messages. A first message is sent from a physical layer to a medium access control (MAC) layer, and triggers MAC layer processing of E-DCH data. A second message is sent from the MAC layer to the physical layer, and enables the physical layer to compute control parameters for physical layer processing of the E-DCH data before the MAC layer processing of the E-DCH data is completed. | 06-30-2011 |
| 20110149915 | SYSTEM AND METHOD FOR FAST DYNAMIC LINK ADAPTATION - Upon the UE transmission power requirement exceeding the maximum or allowable transmission power the MAC may be informed for subsequent TFC selection of all TFCs that currently exceed this limit. The UE may then chose the TFC with the next lower transmission power requirement and the sequence will continue until an acceptable TFC is determined. The system also enables the replacement of the TFCs in the TFCS and advanced determination of non-supported TFCs. The TFCs that require transmission power greater then the maximum or allowed UE transmission power shall be determined continuously in every TTI, not just in TTIs where the maximum power has been exceeded. | 06-23-2011 |
| 20110149867 | METHOD AND SYSTEM FOR DELIVERY OF ASSISTANCE DATA - A method and apparatus are used for providing assistance data to wireless transmit/receive units (WTRU)s. The assistance data may include information regarding neighboring access points (AP)s. The assistance data may be transmitted to WTRUs using multicast, broadcast, and/or point-to-point signaling. The assistance data may be used to facilitate ring and handover of WTRUs from one AP to another. | 06-23-2011 |
| 20110149829 | METHOD AND SYSTEM FOR CONTROLLING THE DISTRIBUTION OF MULTIMEDIA BROADCAST SERVICE - A wireless multi-cell communication system and method of controlling the distribution of multimedia broadcast services (MBMS) are disclosed. The system includes at least one network, e.g., a Universal Terrestrial Radio Access Network (UTRAN), which distributes the MBMS to one or more wireless receive/transmit units (WTRUs). In one embodiment, the MBMS are activated and deactivated based on whether periodic cell updates are provided for a particular cell. In another embodiment, MBMS transmission is terminated when receipt of the MBMS are confirmed. In yet another embodiment, the MBMS are segmented to reduce the resources used by the network and/or the WTRUs during MBMS distribution. | 06-23-2011 |
| 20110149822 | METHOD AND APPARATUS FOR EFFICIENT ADDRESSING AND POWER SAVINGS IN WIRELESS COMMUNICATIONS - A method and apparatus for addressing groups of stations in wireless communications by assigning the stations into a number of groups. Group information may be signaled to each station and a group identifier may be indicated in a frame. The group information may be applied to a performance enhancement, for example power savings for the station, wherein the station enters a power saving mode on a condition that the station determines that it is not a member of the group. | 06-23-2011 |
| 20110149787 | METHOD AND APPARATUS FOR SENDING A CHANNEL QUALITY INDICATION VIA A SHARED CHANNEL - A method and apparatus for generating measurement report and transmitting the measurement report via a random access channel in a CELL_FACH state are disclosed. A wireless transmit/receive unit (WTRU) in CELL_PCH or URA_PCH state may transition to CELL_FACH state. The measurement report may be transmitted in response to receiving a dedicated high speed downlink shared channel (HS-DSCH) using a HS-DSCH radio network temporary identity (H-RNTI). The measurement report may be transmitted periodically and may include a channel quality indicator (CQI). The H-RNTI may be a dedicated H-RNTI. The measurement report may be transmitted when the WTRU has data to transmit, during cell reselection, or during cell update. | 06-23-2011 |
| 20110142094 | ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING-CODE DIVISION MULTIPLE ACCESS SYSTEM - An orthogonal frequency division multiplexing (OFDM)-code division multiple access (CDMA) system is disclosed. The system includes a transmitter and a receiver. At the transmitter, a spreading and subcarrier mapping unit spreads an input data symbol with a complex quadratic sequence code to generate a plurality of chips and maps each chip to one of a plurality of subcarriers. An inverse discrete Fourier transform is performed on the chips mapped to the subcarriers and a cyclic prefix (CP) is inserted to an OFDM frame. A parallel-to-serial converter converts the time-domain data into a serial data stream for transmission. At the receiver, a serial-to-parallel converter converts received data into multiple received data streams and the CP is removed from the received data. A discrete Fourier transform is performed on the received data streams and equalization is performed. A despreader despreads an output of the equalizer to recover the transmitted data. | 06-16-2011 |
| 20110128951 | METHOD AND APPARATUS FOR ENHANCED UPLINK MULTIPLEXING - A method and apparatus for multiplexing are disclosed. Data is received over a plurality of logical channels. Data from the plurality of logical channels is multiplexed into a medium access control (MAC) protocol data unit (PDU) based on a priority associated with each of the plurality of the logical channels. The MAC PDU is transmitted over an uplink transport channel. | 06-02-2011 |
| 20110122958 | POWER LOADING TRANSMIT BEAMFORMING IN MIMO-OFDM WIRELESS COMMUNICATION SYSTEMS - A method is disclosed for tuning a beamformed signal in wireless communications including a plurality of sub-carriers and a plurality of eigenbeams. The method includes adjusting a total gain of each of the plurality of sub-carriers and eigenbeams, and applying the adjusted total gain to each of the sub-carriers and each of the eigenbeams. | 05-26-2011 |
| 20110110238 | METHOD AND APPARATUS FOR PREVENTING TRANSMISSION BLOCKING IN AN HSUPA WIRELESS COMMUNICATION SYSTEM - A method and apparatus for preventing mitigating transmission blocking are provided. A wireless transmit/receive unit (WTRU) detects whether transmission of a medium access control (MAC) flow, such as a MAC dedicated transport channel flow, is prevented by a small non-zero grant. Transmission blocking may be detected when a non-zero grant is smaller than required for transmission of a MAC protocol data unit. If transmission blocking is detected, the WTRU transmits scheduling information. The WTRU may continue to periodically transmit scheduling information on a condition that the blocking continues. | 05-12-2011 |
| 20110096857 | QUALITY CONTROL SCHEME FOR MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEMS - A method and apparatus for optimizing the system capacity of an Orthogonal Frequency Division Multiplexing (OFDM) system that uses with Multiple-Input Multiple-Output (MIMO) antennas. In a receiver, a target quality of service (QoS) metric and reference data rate are set. The target QoS metric may be set to a predetermined value and/or may be adjusted dynamically with respect to packet error rate (PER) by a slow outer-loop control processor. The QoS of received signals are compared to the target QoS. Depending on the comparison, the receiver generates a channel quality indicator (CQI) which is sent to the transmitter. The CQI is a one or two bit indicator which indicates to the transmitter to disable, adjust or maintain data transmission rates of particular sub-carriers, groups of sub-carriers per transmit antenna, or groups of sub-carriers across all transmit antennas. At the transmitter, the transmitted data rate is disabled, adjusted or maintained. | 04-28-2011 |
| 20110090875 | APPARATUS AND METHODS FOR DETERMINATION OF GAIN FACTORS FOR WIRELESS COMMUNICATION TRANSMISSION POWER - Apparatus and methods for wireless communication transmission power control are provided. Determination of gain factors and adjustments for physical channel reconfiguration in the context of transmission power control are addressed. Preferably, implementation is in conjunction with communication systems in which wireless communications are conducted between wireless transmit receive units (WTRUs) using multiple channels that are concurrently transmitted. | 04-21-2011 |
| 20110085535 | REPORTING TERMINAL CAPABILITIES FOR SUPPORTING SHORT MESSAGE SERVICE - A method for delivering a short message service (SMS) message to an interworking wireless local area network user equipment (UE) begins by registering the UE with an Internet Protocol short message gateway (IP-SM-GW). A capability report is sent from the UE to the IP-SM-GW, the capability report including the capabilities of the UE. A SMS message is transmitted from a short message service center (SMSC) to the IP-SM-GW. The capabilities of the UE are evaluated at the IP-SM-GW to determine whether the UE can receive the SMS message, and the SMS message is delivered to the UE via the IP-SM-GW if the UE has the capabilities to receive the SMS message. | 04-14-2011 |
| 20110085521 | WIRELESS COMMUNICATION SYSTEM WITH SELECTIVELY SIZED DATA TRANSPORT BLOCKS - A wireless transmit receive unit and methods for code division multiple access telecommunications are disclosed that process data in a physical layer and a medium access control (MAC) layer. The physical and MAC layers communicate data between each other via transport channels. The transport channels are associated with logical channels. Logical-channel data for the transport channels is provided in data units having a bit size evenly divisible by an integer N. The respective logical channels associated with a transport channel utilize MAC headers that have a selected modulo N bit size such that there is bit alignment of the MAC headers of all the logical channels associated with a particular transport channel. | 04-14-2011 |
| 20110081941 | FAST ADAPTIVE POWER CONTROL FOR A VARIABLE MULTIRATE COMMUNICATIONS SYSTEM - A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal in which the user data signal having a first rate is converted into a transmission data signal having a faster second rate for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of the first and second rates such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. Preferably, the user data signal having the first rate is converted into the transmission data signal having the second faster rate by repeating selected data bits whereby the energy per bit to noise spectrum density ratio is increased in the transmission data signal. | 04-07-2011 |
| 20110069678 | WIRELESS METROPOLITAN AREA NETWORK ARCHITECTURE FOR MANAGING NETWORK RESOURCES AND MOBILITY - The present invention proposes an infrastructure to enable seamless mobility for wireless metropolitan area networks (WMANs) and to provide for management of spectrum and network resources. An WMAN reference model is introduced where the radio resource management (RRM) and handover (HO) sub-layer is introduced into the protocol stack. The WMAN management plane is responsible for the RRM and HO management. Several physical and logical network architecture options for WMAN management are proposed. | 03-24-2011 |
| 20110064024 | SYSTEM AND METHOD FOR CALL ROUTING AND PAGING ACROSS DIFFERENT TYPES OF NETWORKS - A network architecture uses an Application Server Autonomous Access (ASAA) server which allows paging and call routing across different types of wireless and wireline access networks. The ASAA server provides connectivity between an external voice or data network and a wireless transmit/receive unit (WTRU). The external voice or data network may be a public switched telephone network (PSTN) or a public data network (PDN), so that the connectivity between the external network and the WTRU is provided through the access networks using data from the ASAA server. | 03-17-2011 |
| 20110058534 | METHOD IMPLEMENTED BY A SUBSCRIBER UNIT FOR SELECTIVELY SUPPRESSING COMMUNICATIONS - A subscriber unit, used for communicating in voiced communications at a first data rate and communicating at a second data rate for other data, suppresses a selected communication during communication rate modification. A determination is made as to whether the transmission requires a change in data rate, and a switching circuit responds by engaging a different communication channel. Blocking circuitry blocks transmissions until the different data rate is established. This provides an optimum data rate, while preserving the integrity of the data transmitted. | 03-10-2011 |
| 20110047444 | VARIABLE RATE CODING FOR ENABLING HIGH PERFORMANCE COMMUNICATION - A protocol for optimizing the use of coded transmissions such as over wireless links. In this technique, interframes are split into segments selected to be an optimum size according to transmission characteristics of the radio channel. The inverse process is applied at the receiver. Using this scheme, segments containing erroneous data may be resent. | 02-24-2011 |
| 20110032877 | METHOD AND APPARATUS FOR SUPPORTING AMD RE-SEGMENTATION - A method and apparatus for acknowledge mode data (AMD) re-segmentation are disclosed. An AMD protocol data unit (PDU) is generated from at least one RLC SDU. The AMD PDU size is within a flexible maximum AMD PDU size. The original AMD PDU is stored in a retransmission buffer, and transmitted. If transmission of the original AMD PDU fails and the original AMD PDU size is larger than an updated maximum AMD PDU size, the original AMD PDU is segmented to segmented AMD PDUs. If transmission of one of the segmented AMD PDUs fails, the original AMD PDU may be re-segmented to smaller size AMD PDUs. | 02-10-2011 |
| 20110026496 | CODE DIVISION MULTIPLE ACCESS TRANSMISSION ANTENNA WEIGHTING - A code division multiple access communication system has a base station with a plurality of transmitting antennas. From each transmitting antenna of the base station, a pilot signal is transmitted having a different chip sequence than the other transmitting antenna. At a user equipment, the transmitted pilot signals are received from each transmitting antenna. A weight adjustment is derived in response to the received transmitted pilot signals. The user equipment transmits the weight adjustment to the base station. The transmitted weight adjustment is received from the user equipment. A data signal is processed to produce a plurality of versions of the data signal. At least a portion of each processed data signal has a different chip sequence than the other processed data signal version. At least one processed data signal version is weighted by a weight value adjusted in response to the received transmitted weight adjustment. From each transmitting antenna, a different one of the data signal versions is transmitted and the transmitted data signal versions are received at the user equipment. | 02-03-2011 |
| 20110026479 | METHOD AND SYSTEM FOR TRANSFERRING WIRELESS TRANSMIT/RECEIVE UNIT-SPECIFIC INFORMATION - The present invention is related to a method and system for transferring wireless transmit/receive unit (WTRU)-specific information to support enhanced uplink (EU) operation in a wireless communication system. A radio network controller (RNC) obtains WTRU-specific information, and transfers the WTRU-specific information to the Node-Bs. Each Node-B is configured to schedule uplink transmissions from a WTRU and utilizes the WTRU-specific information in operation of EU transmissions. | 02-03-2011 |
| 20100330914 | METHOD AND APPARATUS FOR SELECTING A MULTI-BAND ACCESS POINT TO ASSOCIATE WITH A MULTI-BAND MOBILE STATION - A method and apparatus for selecting one of a plurality of multi-band access points (APs) to associate with a multi-band wireless transmit/receive unit (WTRU) are disclosed. The multi-band APs broadcast frequency band information regarding multiple frequency bands on which the multi-band AP is configured to operate. The multi-band WTRU selects a particular multi-band AP to associate with and a frequency band to use to communicate with the selected multi-band AP based on the frequency band information. If the multi-band WTRU receives frequency band information from the selected multi-band AP which indicates that a characteristic, (e.g., throughput, path loss, load, capacity, backhaul), of the selected frequency band is unacceptable, the multi-band WTRU determines whether to disassociate with the selected multi-band AP or to continue to associate with the selected multi-band AP via a different frequency band. | 12-30-2010 |
| 20100322195 | METHOD AND APPARATUS FOR MAPPING 3GPP SERVICE PRIMITIVES TO MEDIA INDEPENDENT HANDOVER EVENT SERVICES - A Third Generation Partnership Project (3GPP) media independent handover (MIH) service access point (SAP) is configured to provide MIH event services, (e.g., IEEE 802.21 event services), by mapping service primitives to the MIH event services. The service primitives may be 3GPP service primitives which originate from at least one of a radio resources (RR) layer, a logical link control (LLC) layer, a general packet radio service (GPRS) mobility management (GMM) layer, a session management (SM) layer, a non-access stratum (NAS), an access stratum (AS) and an evolved universal terrestrial radio access (E-UTRA)/evolved core network (E-CORE) system. The event services may include a link parameter change event service, a link up event service, a link going down event service, a link down event service, a handover complete event service and a link detected event service. | 12-23-2010 |
| 20100318886 | METHOD AND APPARATUS FOR PROCESSING A DOWNLINK SHARED CHANNEL - A method and apparatus is disclosed wherein a user equipment (UE) receives control information on a first channel and uses the control information to process a second channel. | 12-16-2010 |
| 20100318796 | METHOD AND SYSTEM FOR SECURING WIRELESS COMMUNICATIONS - A method for transmitting an encrypted signal to a wireless transmit/receive unit (WTRU) such that decryption of the encrypted signal depends on a trust zone associated with the WTRU is disclosed. The encryption may be performed using hierarchical modulation, scrambling, authentication, location validation, or a combination thereof. The size of a trust zone may also be adjusted. | 12-16-2010 |
| 20100272155 | CODE DETECTION - A code transmitted in a wireless format is to be detected. A power level associated with the code is determined. The determined power level is compared with a plurality of thresholds. A test statistic is increased or decreased based on which of the thresholds that the determined power level falls within. If the test statistic exceeds an acceptance threshold, the code is deemed acquired. If the test statistic is below a dismissal threshold, the code is deemed not present. If the test statistic does not exceed the acceptance threshold and the test statistic is not below the dismissal threshold, the testing for the code is repeated. | 10-28-2010 |
| 20100260238 | CANCELLATION OF PILOT AND TRAFFIC SIGNALS - A method for removing selected signals from a received signal prior to decoding begins by receiving communication signals from a transmitter over a CDMA air interface. The received communication signals are input to a traffic signal cancellation system for canceling unwanted traffic signals, thereby producing an output (O). The received communication signals are input to a pilot signal cancellation system for removing a global pilot signal, thereby producing an output (O | 10-14-2010 |
| 20100254440 | METHOD AND APPARATUS FOR RECEIVING PLURALITY OF DATA SIGNALS - A transmitter site transmits a plurality of different data signals at a chip rate over a shared spectrum in a code division multiple access communication system. Each transmitted data signal experiences a similar channel response. A combined signal of the transmitted data signals is received. The combined signal is sampled at a multiple of the chip rate. The channel response for the combined signal is determined. A spread data vector is determined using the combined signal samples and the estimated channel response. The data of the different data signals is determined using the spread data vector. | 10-07-2010 |
| 20100251058 | METHOD AND APPARATUS FOR RETRANSMISSION MANAGEMENT FOR RELIABLE HYBRID ARQ PROCESS - A method for transmitting a packet from a transmitter to a receiver in a wireless communication system begins by building a packet by a transport format combination (TFC) selection process, and the packet is transmitted from the transmitter to the receiver. If the transmitter receives an indication that the packet was not successfully received at the receiver, the packet is retransmitted via a hybrid automatic repeat request (HARQ) procedure. If the HARQ procedure did not successfully transmit the packet, then the packet is retransmitted via a retransmission management (RM) procedure. If the RM procedure did not successfully transmit the packet, then the packet is discarded by the transmitter. | 09-30-2010 |
| 20100246377 | MIMO BEAMFORMING-BASED SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM - A multiple-input multiple-output (MIMO) beamforming-based single carrier frequency division multiple access (SC-FDMA) system is disclosed. At the transmitter, a fast Fourier transform (FFT) is performed on transmission data to generate frequency domain data. The frequency domain transmit data is mapped to assigned subcarriers. An inverse fast Fourier transform (IFFT) is performed on the transmit data mapped to the assigned subcarriers to generate time domain transmit data. The time domain transmit data is transmitted via antennas. At a receiver, an FFT is performed on the received data to generate frequency domain received data. Subcarrier demapping is performed to extract data mapped on the assigned subcarriers. A channel estimator generates a channel matrix which is decomposed into U, D and V | 09-30-2010 |
| 20100240411 | RANDOM ACCESS CHANNEL PREAMBLE - One out of sixteen preamble signatures is selected. A code is produced based on the selected preamble signature. The produced code is phase rotated to produce a processed preamble signature signal. The processed preamble signature signal is used in processing the CDMA RACH signal and the CDMA RACH signal is used to access a CDMA system. | 09-23-2010 |
| 20100226316 | SYSTEM AND METHOD FOR PRIORITIZATION OF RETRANSMISSION OF PROTOCOL DATA UNITS TO ASSIST RADIO-LINK-CONTROL RETRANSMISSION - A medium access control (MAC) architecture reduces transmission latency for data block retransmissions. A plurality of data blocks are received and temporarily stored in a first memory (e.g., queue, buffer). The plurality of data blocks are then transmitted. A determination is made as to whether each of the transmitted data blocks was received successfully or needs to be retransmitted because the data block was not received successfully. Each of the transmitted data blocks that needs to be retransmitted is marked and temporarily stored in a second memory having a higher priority than the first memory. The marked data blocks are retransmitted before data blocks stored in the first memory location. | 09-09-2010 |
| 20100222091 | REPORTING TERMINAL CAPABILITIES FOR SUPPORTING SHORT MESSAGE SERVICE - A method for delivering a short message service (SMS) message to an interworking wireless local area network user equipment (UE) begins by registering the UE with an Internet Protocol short message gateway (IP-SM-GW). A capability report is sent from the UE to the IP-SM-GW, the capability report including the capabilities of the UE. A SMS message is transmitted from a short message service center (SMSC) to the IP-SM-GW. The capabilities of the UE are evaluated at the IP-SM-GW to determine whether the UE can receive the SMS message, and the SMS message is delivered to the UE via the IP-SM-GW if the UE has the capabilities to receive the SMS message. | 09-02-2010 |
| 20100220684 | HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WTRU AND METHOD - A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data. | 09-02-2010 |
| 20100215084 | SIMPLE AND ROBUST DIGITAL CODE TRACKING LOOP FOR WIRELESS COMMUNICATION SYSTEMS - A simple and robust CTL is used for time tracking of multipath components of a spread spectrum signal transmitted over a wireless multipath fading channel. A digital code-tracking loop includes the implementations of despreading early and late data samples by use of a pseudonoise sequence, an error signal output generated by the despreading, and adjustment for a plurality of on-time, early and late samples, a data rate of a control signal provided as a fractional proportion of a data rate of error signals. | 08-26-2010 |
| 20100208772 | ASYMMETRICAL FORWARD/REVERSE TRANSMISSION BANDWIDTH - A wireless communications system employs code-division multiple access information transmission techniques where the uplink and downlink transmission bandwidths are unequal. The higher bandwidth is an integer multiple of the lower bandwidth. The present system requires a base station and a subscriber unit to have two pseudo-random code generators which can be clocked separately. Alignment of the uplink and downlink pseudo-random spreading codes is achieved by truncating the code sequence for the lower speed link at the conclusion of a complete code sequence for the higher speed link. | 08-19-2010 |
| 20100208689 | METHOD AND APPARATUS FOR DYNAMICALLY ALLOCATING H-ARQ PROCESSES - A method and apparatus for supporting enhanced uplink (EU) transmissions, implemented in a wireless transmit/receive unit (WTRU), is disclosed. The WTRU provides hybrid automatic repeat request (H-ARQ) processes for supporting transmission over an enhanced dedicated channel (E-DCH), wherein at least one H-ARQ process is reserved for a dedicated channel medium access control channel (MAC-d) flow. The WTRU receives H-ARQ information, wherein the information indicates H-ARQ processes for which transmission of data from the MAC-d flow is allowed. For each transmission time interval (TTI), the WTRU allocates an H-ARQ process for use by the MAC-d flow, from the allowed H-ARQ processes. The WTRU transmits data from the MAC-d flow over the E-DCH using the allocated H-ARQ process. | 08-19-2010 |
| 20100202409 | WIRELESS COMMUNICATION METHODS AND COMPONENTS THAT IMPLEMENT HANDOFF IN WIRELESS LOCAL AREA NETWORKS - This invention relates to wireless local area networks, and particularly to the IEEE 802.11 family of standards. It consists of a method and apparatus that can be implemented in access points (APs) and subscriber wireless transmit/receive units (WTRUs), in order to allow an AP to initiate re-association of a WTRU to itself or a different AP. The invention improves the robustness of the network by enabling more efficient load balancing, congestion control, and roaming, without compromising the user experience. | 08-12-2010 |
| 20100202398 | SYSTEM FOR EFFICIENT RECOVERY OF NODE-B BUFFERED DATA FOLLOWING MAC LAYER RESET - A method and system for the UE and RNC to reduce transmission latency and potentially prevent loss of PDUs upon a MAC layer reset. UE generation of the status PDU is coupled with the MAC layer reset. The RNC generates a message with a MAC reset indication. Following the MAC layer reset all PDUs stored in the UE MAC layer reordering buffers are flushed to RLC entities and then processed by RLC entities prior to the generation of a PDU status report. The PDU status report provides to the RNC the status of all successfully received PDUs. Upon reception of a PDU status report in the RNC, missing PDUs are realized and retransmitted to the UE. | 08-12-2010 |
| 20100202360 | MAC MULTIPLEXING AND TFC SELECTION FOR ENHANCED UPLINK - A method and a wireless transmit/receive unit (WTRU) for multiplexing data for an enhanced dedicated channel (E-DCH) is disclosed. The WTRU receives at least one serving grant and at least one non-scheduled grant, wherein the at least one serving grant is a grant for scheduled data transmission and the at least one non-scheduled grant is a grant for non-scheduled data transmission. The WTRU determines supported enhanced dedicated channel transport format combinations (E-TFCs). The WTRU determines an enhanced uplink medium access control (MAC-e) protocol data unit (PDU) payload amount. For each logical channel, in order of priority, the WTRU multiplexes data from MAC-d flows associated with each logical channel into a MAC-e PDU, wherein each MAC-d flow is configured as either a scheduled MAC-d flow or a non-scheduled MAC-d flow, wherein on a condition that the MAC-e PDU payload amount is not equal to a supported E-TFC size, reducing the amount of data from a scheduled MAC-d flow to multiplex into the MAC-e PDU, based on a next smaller E-TFC size relative to the MAC-e PDU payload amount. The WTRU selects an E-TFC for transmission of the MAC-e PDU, wherein the selected E-TFC is a smallest E-TFC that supports the MAC-e PDU. The WTRU transmit the MAC-e PDU over the E-DCH processed in accordance with the selected E-TFC. | 08-12-2010 |
| 20100202315 | METHOD AND APPARATUS FOR NETWORK MANAGEMENT USING PERIODIC MEASUREMENTS OF INDICATORS - A beacon signal used in data communications, such as the IEEE 802.11, is provided with data extensions. The data extensions permit additional information to be provided by the beacon signal, thereby reducing the traffic overhead of the network. The data extensions further permit handoffs and handoffs based on offset values. Periodic beacon requests are made during connection between a wireless transmit/receive unit (WTRU) and an access point (AP) on a WLAN. A Measurement Request field corresponding to a beacon request contains a measurement duration value and channel number for which the request applies. The beacon request permits a scan mode which includes “Active Scan” mode, “Passive Scan” mode and “Beacon Table” mode. In Active Scan mode, the measuring station (STA) transmits a probe request with a broadcast SSID. In Passive Scan mode, the measuring STA passively receives on the specified channel and return a beacon report containing one information element for each STA from which it detects a beacon or probe response. In Beacon Table mode, the measuring STA returns a beacon report containing the current contents of its beacon table without performing additional measurements. | 08-12-2010 |
| 20100197341 | POWER CONTROL OF POINT TO MULTIPOINT PHYSICAL CHANNELS - A method and apparatus are used to determine an efficient transmit power for point to multipoint (PtM) transmissions by maintaining a database at a base station which specifies which of a plurality of wireless transmit/receive units (WTRUs) are members of each PtM group. The transmit power of each WTRU's downlink dedicated channel is adjusted to the minimum required power necessary and the PtM transmit power for each PtM group is set such that the PtM transmit power of a PtM group is equal to the greatest of a WTRU in the PtM group plus a PtM power offset. | 08-05-2010 |
| 20100195625 | PHYSICAL LAYER PROCESSING FOR A WIRELESS COMMUNICATION SYSTEM USING CODE DIVISION MULTIPLE ACCESS - An address for data bits is determined by categorizing the bits into a first, second, third and fourth case. The first case is for bits transferred in only one resource unit in a time slot; the second case is for bits transferred in a plurality of downlink resource units; the third case is for bits transferred in an uplink resource unit where a spreading factor of data in a first resource unit is greater than or equal to a spreading factor of a second resource unit; and the fourth case is for bits transferred in an uplink resource unit where a spreading factor of data in a first resource unit is less than a spreading factor of a second resource unit. | 08-05-2010 |
| 20100195577 | METHOD OF GENERATING AN INDEX VALUE - A method of generating an index value associated with a primary synchronization code within a communication signal includes splitting a sampled communication signal into even and odd samples. The even and odd samples are correlated with a primary synchronization code of the communication signal and complex values of the even and odd samples are generated. Signal strength values for the even and odd samples are approximated and the approximate signal strength values within a frame of the communication signal are accumulated. A highest accumulated signal strength value is assigned as an index value. | 08-05-2010 |
| 20100189044 | MULTI-NODE COMMUNICATION SYSTEM AND METHOD OF REQUESTING, REPORTING AND COLLECTING DESTINATION-NODE-BASED MEASUREMENTS AND ROUTE-BASED MEASUREMENTS - A multi-node communication system and method used to request, report and collect destination-node-based measurements and route-based measurements is disclosed. The communication system may be a mesh network including a plurality of mesh points (MPs). In one embodiment, a destination-node-based measurement request is sent to one or more destination nodes via destination-unicast, destination-multicast, or destination-broadcast, using routes specified via next-hop-unicast, next-hop-multicast, or next-hop-broadcast addressing. In another embodiment, a source node sends a measurement request message to a final destination node, whereby each node along the route individually sends a measurement report message to the source node. Alternatively, measurement results of each node are combined and appended to the measurement request message, and a measurement report message including the combined measurement results is sent to the source node. | 07-29-2010 |
| 20100177743 | METHOD AND APPARATUS FOR BLIND CODE DETECTION - The present invention is a receiver which includes a blind code detection device for determining the identity of a plurality of channels over which information is to be transmitted when the identity of all channels is not known by the receiver. The blind code detection device generates a candidate channel list filled with the identify of selected channels out of the plurality of channels. A multi-user detection device, responsive to the blind code detection device, processes those channels in the candidate code list. | 07-15-2010 |
| 20100169724 | METHOD AND SYSTEM FOR RECOGNIZING RADIO LINK FAILURES ASSOCIATED WITH HSUPA AND HSDPA CHANNELS - A method and system for detecting radio link (RL) failures between a wireless transmit/receive unit (WTRU) and a Node-B are disclosed. When signaling radio bearers (SRBs) are supported by high speed uplink packet access (HSUPA), an RL failure is recognized based on detection of improper operation of at least one of an absolute grant channel (AGCH), a relative grant channel (RGCH), a hybrid-automatic repeat request (H-ARQ) information channel (HICH), an enhanced uplink dedicated physical control channel (E-DPCCH) and an enhanced uplink dedicated physical data channel (E-DPDCH). When SRBs are supported by high speed downlink packet access (HSDPA), an RL failure is recognized based on detection of improper operation of at least one of a high speed shared control channel (HS-SCCH), a high speed physical downlink shared channel (HS-PDSCH) and a high speed dedicated physical control channel (HS-DPCCH). | 07-01-2010 |
| 20100167751 | RESOURCE MANAGEMENT SYSTEM FOR ELECTRONIC DEVICES - A method and apparatus for system resource augmentation are provided. A wireless transmit/receive unit (WTRU) internal system resource is monitored. A plurality of communication links are established between the WTRU and an external system resource. The plurality of communication links are used to augment the internal system resource with the external system resource. | 07-01-2010 |
| 20100157950 | SYSTEM FOR USING RAPID ACQUISITION SPREADING CODES FOR SPREAD-SPECTRUM COMMUNICATIONS - A system for rapidly acquiring a spreading code, used in a code division multiple access (CDMA) system, comprises a generator for generating a first long code and a second long code, with each long code having a length of N chips. The first long code is different from the second long code. A transmitter transmits the first long code and the second long code at a first phase angle and at a second phase angle, respectively, on a carrier signal over a communications channel using radio waves. The first long code and the second long code may be transmitted at an in-phase (I) angle and at a quadrature-phase (Q) angle, respectively, on the carrier signal. From the communications channel, an I acquisition circuit and a Q acquisition circuit may acquire, in parallel, the first long code and the second long code from the I angle and the Q angle, respectively, of the carrier signal by searching, in parallel, N/2 chips of the first long code and the second long code. | 06-24-2010 |
| 20100157948 | METHOD OF USING A: MOBILE UNIT TO DETERMINE WHETHER TO COMMENCE HANDOVER - A method of using a mobile unit in a multi-cell communication system to determine whether to commence handover of the mobile unit from a serving base station located in a first cell of the communication system to a target base station located in a second cell of the communication system. The mobile unit determines the serving base station received signal code power (RSCP | 06-24-2010 |
| 20100150207 | SETTING A TRANSMISSION POWER LEVEL FOR A MOBILE UNIT - A spread signal is produced having an adjustable spread spectrum. A data signal is provided for transmission. The data signal is processed to have a first spread spectrum. The processed first spread spectrum data signal is filtered to have one out of a plurality of spread spectrums. The filtering capable of producing a signal having a spread spectrum of any of the plurality of spread spectrums. The filtered one spread spectrum data signal is transmitted. | 06-17-2010 |
| 20100150125 | SYSTEM AND METHOD FOR RECEIVED CHANNEL POWER INDICATOR (RCPI) MEASUREMENT - A received channel power indicator (RCPI) value is used as a measure of the received RF power in the selected channel, measured at the antenna connector. This parameter is a measure by the PHY sublayer of the received RF power in the channel measured over the PLCP preamble and over the entire received frame. RCPI is a monotonically increasing, logarithmic function of the received power level defined in dBm. | 06-17-2010 |
| 20100150078 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR DECODING ENHANCED DEDICATED CHANNEL ABSOLUTE GRANT CHANNEL TRANSMISSIONS - A method of decoding enhanced uplink absolute grant channel (E-AGCH) transmissions in a wireless transmit/receive unit (WTRU). E-AGCH data is received, the E-AGCH data including a cyclic redundancy check (CRC) part and a data part, the CRC part having been masked with a WTRU identity (ID). The CRC part and the data part are demultiplexed and the CRC part is demasked with a first WTRU ID. A first CRC is performed with the data part and the CRC part demasked with the first WTRU ID. The data part is decoded on a condition that the first CRC passes. | 06-17-2010 |
| 20100122085 | SYSTEM AND METHOD FOR PROVIDING VARIABLE SECURITY LEVEL IN A WIRELESS COMMUNICATION SYSTEM - A system and method for providing variable security levels in a wireless communication network. The present invention optimizes the often conflicting demands of highly secure wireless communications and high speed wireless communications. According to a preferred embodiment of the present invention, various security sensors are scanned to determine the likely presence of an intruder within a predetermined trust zone. If an intruder is likely present, the security level is changed to the highest setting, and consequently a lower data rate, while the intruder is identified. If the identified intruder is in fact a trusted node, the security level is returned to a lower setting. If the identified intruder is not a trusted node, the security level is maintained at an elevated state while the intruder is within the trust zone. | 05-13-2010 |
| 20100115368 | METHOD AND APPARATUS FOR ASSIGNING HYBRID-AUTOMATIC REPEAT REQUEST PROCESSES - A method and apparatus for assigning a hybrid-automatic repeat request (H-ARQ) process in a wireless transmit/receive unit (WTRU) to support enhanced uplink (EU) data transmission. Configuration parameters for enhanced uplink (EU) operation are received. The configuration parameters include a priority associated with a medium access control for dedicated channel (MAC-d) flow and a maximum number of H-ARQ transmissions associated with the MAC-d flow. Data is selected for transmission over an enhanced dedicated channel (E-DCH) based on a priority of the MAC-d flow, wherein data with the highest priority is selected. On a condition that the selected data is new data that was not previously transmitted, an available H-ARQ process is assigned for supporting transmission of the selected data, and the selected data is transmitted over the E-DCH using the assigned H-ARQ process. On a condition that the selected data was previously transmitted, the selected data is retransmitted over the E-DCH using the same H-ARQ process that was assigned to previously transmit the selected data. A transmission count is incremented in response to transmitting or retransmitting the selected data. A determination is made of whether the transmission count is at least equal to the maximum number of H-ARQ transmissions. The selected data is discarded in response to a determination that the transmission count is at least equal to the maximum number of H-ARQ transmissions. | 05-06-2010 |
| 20100113052 | METHOD AND APPARATUS FOR IMPLEMENTING A DATA LIFESPAN TIMER FOR ENHANCED DEDICATED CHANNEL TRANSMISSIONS - A wireless communication system, which supports enhanced dedicated channel (E-DCH) data transmissions, includes a wireless transmit/receive unit (WTRU), at least one Node-B and a radio network controller (RNC). The WTRU includes a buffer, a data lifespan timer, a data retransmission counter, a hybrid-automatic repeat request (H-ARQ) process and a controller. The timer establishes a lifespan for at least one data block stored in the buffer. If physical resources have not been allocated for a data block associated with a lifespan timer that is close to expiration, the WTRU sends an urgent channel allocation request. If physical resources have been allocated, the data block is prioritized for transmission with respect to other data blocks. The data block is discarded if the lifespan timer expires or if the WTRU receives feedback information indicating that the data block was successfully received by the Node-B. | 05-06-2010 |
| 20100110991 | USER EQUIPMENT FOR PHYSICAL LAYER AUTOMATIC REPEAT REQUEST - A user equipment for physical layer automatic repeat request is disclosed. The user equipment comprises a higher layer automatic repeat request (ARQ) mechanism, a physical layer transmitter, a physical layer receiver, an acknowledgment (ACK) transmitter and an adaptive modulation and control unit (AMC). A higher layer ARQ mechanism generates data for transmission. A physical layer transmitter receives the data for transmission from the higher layer ARQ mechanism, to format the received data into packets for transmission. A physical layer receiver receives and demodulates received packets and retransmission statistics. An ACK transmitter transmits a corresponding acknowledgment for a given packet at the physical layer receiver. An AMC unit adjusts a particular encoding/data modulation of each packet using collected retransmission statistics. | 05-06-2010 |
| 20100105337 | DYNAMIC CHANNEL QUALITY MEASUREMENT PROCEDURE IMPLEMENTED IN A WIRELESS DIGITAL COMMUNICATION SYSTEM TO PRIORITIZE THE FORWARDING OF DOWNLINK DATA - A wireless digital communication system includes a base station in communication with a plurality of user equipment mobile terminals (UEs). The system prioritizes the forwarding of blocks of downlink data to designated ones of the UEs. The system employs adaptive modulation and coding (AM&C) to achieve improved radio resource utilization and provides optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink (DL) channel quality measurements only from those mobile terminals (UEs) with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs. | 04-29-2010 |
| 20100103987 | METHOD AND APPARATUS FOR TRANSFERRING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM - Data is transferred in a wireless communication system, such as a wireless spread spectrum communication system. A plurality of transmitting antennas are provided. Data is encoded to produce a plurality of data streams for each of the plurality of codes. The plurality of data streams are spread with the plurality of spreading codes, and for each transmitting antenna, one of the spread data streams of each code together is combined to produce a spread data vector. Each transmitting antenna transmits its spread data vector. The transmitted spread data vectors are received by each of a plurality of receiving antennas as a received version, and the data is recovered using the received versions. | 04-29-2010 |
| 20100103985 | METHOD AND APPARATUS FOR REDUCING MULTI-USER PROCESSING IN WIRELESS COMMUNICATION SYSTEMS - A method and apparatus is disclosed for reducing multi-user processing at the receiver in wireless communication systems. Detected codes are grouped according to channel impulse response and a parent code is identified for each group of detected codes. A matrix A is constructed and joint detection is performed using the identified parent codes. Data symbols of the detected codes are obtained from the data symbols of the identified parent codes. | 04-29-2010 |
| 20100099454 | MOBILE UNIT HAVING INTERNET PROTOCOL FUNCTIONALITY - A mobile unit includes a handset and a removable storage module having a unique storage module identity, for storing information specific to a user, including an Internet Protocol (IP) address. Additional information regarding a Public Land Mobile Network (PLMN) and International Mobile Subscriber Identity (IMSI) which uniquely identifies the subscriber is also stored in the removable storage module. Upon successfully camping on a cell of a mobile network, the IP address is forwarded to an IP-based network capable of communicating with the mobile unit. In an alternate embodiment, the mobile unit has multi-network capabilities which allow it to communicate with an IP-based network and a cellular network at the same time. In another embodiment, existing cellular network services for the mobile unit having multi-network capabilities are routed through the IP-based network. | 04-22-2010 |
| 20100088529 | Data-Mover Controller With Plural Registers For Supporting Ciphering Operations - A data processing system ciphers and transfers data between a first memory unit and a second memory unit, such as, for example, between a share memory architecture (SMA) static random access memory (SRAM) and a double data rate (DDR) synchronous dynamic random access memory (SDRAM). The system includes a ciphering engine and a data-mover controller. The data-mover controller includes at least one register having a field that specifies whether or not the transferred data should be ciphered. If the field specifies that the transferred data should be ciphered, the field also specifies the type of ciphering that is to be performed, such as a third generation partnership project (3GPP) standardized confidentially cipher algorithm “f8” or integrity cipher algorithm “f9”. | 04-08-2010 |
| 20100087189 | FORMAT CONVERTER FOR WLAN-UMTS INTERWORKING EMPLOYING UMTS AIR INTERFACE - A format converter for use with a universal mobile telecommunications system (UMTS) having a transceiver, a wireless local area network (WLAN) having an access point (AP) and a wireless terminal, for providing access to the UMTS by the terminal. The format converter comprises a WLAN transceiver for sending and receiving messages to and from the AP; a UMTS transceiver for sending and receiving messages to and from the transceiver in the UMTS; and a translator for translating WLAN messages to UMTS format and UMTS messages to WLAN format. | 04-08-2010 |
| 20100081396 | MITIGATION OF WIRELESS TRANSMIT/RECEIVE UNIT (WTRU) TO WTRU INTERFERENCE USING MULTIPLE ANTENNAS OR BEAMS - Multiple antenna elements of a WTRU are used to form an adaptive antenna beam pattern for receiving signals in the downlink direction. The WTRU utilizes the formed antenna beam to form a transmission antenna beam for transmitting signals in the uplink direction. In an alternate embodiment, the multiple antenna elements are used to form a plurality of fixed, predetermined antenna beams. The WTRU then selects and switches to the one of the predetermined beams that yields the best downlink reception signals. The WTRU utilizes the selected beam pattern to transmit signals in the uplink direction. In an alternate embodiment, the WTRU receives spectral arrangement information and utilizing this information to avoid transmitting in the direction of spectrally adjacent WRTUs. | 04-01-2010 |
| 20100074242 | SIMPLE BLOCK SPACE TIME TRANSMIT DIVERSITY USING MULTIPLE SPREADING CODES - A base station and user equipment (UE) for use in a CDMA communication system are disclosed. The base station includes a first and second antenna for transmitting first and second communication bursts. The first channelization device spreads data using a first channelization code and the second channelization device spreads the data using a second channelization code. The UE has a data detection device for receiving a signal including the first and second communication bursts. | 03-25-2010 |
| 20100067620 | REDUCED COMPLEXITY SLIDING WINDOW BASED EQUALIZER - A method and apparatus for use in data estimation in wireless communication are provided. A wireless communications signal is received and transformed to produce a received vector. The received vector is processed using a sliding window based approach that includes processing each of a plurality of windows. For each window, an approximate circulant channel response matrix is produced for use in estimating a data vector corresponding to the window. | 03-18-2010 |
| 20100067473 | METHOD AND APPARATUS FOR CLEAR CHANNEL ASSESSMENT OPTIMIZATION IN WIRELESS COMMUNICATION - A method and apparatus are directed toward optimizing clear channel assessment (CCA) parameters in wireless communications. A CCA parameter request is received from an optimizing station. A current CCA parameter is read and transmitted to the optimizing station. A notification is received from the optimizing station of an optimized CCA parameter to be used by the optimizing station. | 03-18-2010 |
| 20100061329 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR REPORTING TRAFFIC VOLUME MEASUREMENT INFORMATION TO SUPPORT ENHANCED UPLINK DATA TRANSMISSIONS - A method and apparatus for enhanced uplink (EU) dedicated channel data transmission. On a condition that a scheduling message is not available, wherein the scheduling message is for scheduling scheduled data transmission, a wireless transmit/receive unit (WTRU) transmits non-scheduled data up to a threshold amount of data in absence of the scheduling message. On a condition that scheduled data for a logical channel is in an EU data buffer of the WTRU, the WTRU transmits EU scheduling information with EU non-scheduled data transmission in absence of the scheduling message, wherein the scheduling information indicates a total amount of data in the EU data buffer and an amount of EU data buffered for a priority logical channel. The WTRU receives a scheduling message in response to the transmitted EU scheduling information and transmits the scheduled data in response to the scheduling message. | 03-11-2010 |
| 20100056169 | DOWNLINK POWER CONTROL WITH LIMIT TO DYNAMIC RANGE USING DETECTION OF DOWNLINK TRANSMIT POWER - An apparatus and method is provided for dynamic range power control of a wireless downlink communication signal, such that target signal quality adjustments are held temporarily when it is apparent that transmit power control commands will not produce the desired response at the transmitting station. Comparisons of measured received signals to thresholds are performed to determine whether the transmitting station has either reached the maximum or minimum transmit power, in which case the target signal quality adjustment is controlled accordingly. When normal transmit power is detected, the target signal quality adjustments are allowed to resume as usual. | 03-04-2010 |
| 20100056168 | RESOURCE ALLOCATION TO USERS IN SLOTTED CODE DIVISION MULTIPLE ACCESS SYSTEMS USING BEAMS - The invention includes several embodiments for slot assignment in code division multiple access communication systems. Some of the embodiments relate to fixed beams and others relate to adaptive arrays. One embodiment for fixed beams assigns slots by first detecting a beam having the best received quality and selected the best slot from that beam. Another fixed beam embodiment determines the best slot or slots in a number of beams and determines the overall best beam/slot combination. Another fixed beam embodiment uses a modified interference factor. One embodiment for the uplink using adaptive arrays using a spatial analysis stage followed by a transmission power level estimation stage. An overall interference level associated with each slot is determined and a slot having the best overall quality is determined. Another embodiment for the downlink uses the spatial analysis and slot assignment of the uplink for the downlink. Another embodiment for the downlink uses a spatial and transmission power level estimation stages. For adaptive arrays, the slot assignment can be determined whether the pathloss for each user is estimated or not and whether signals from each user are received or not. | 03-04-2010 |
| 20100046673 | RECEIVER FOR ESTIMATING SIGNAL MAGNITUDE, NOISE POWER, AND SIGNAL-TO-NOISE RATIO OF RECEIVED SIGNALS - A method and apparatus for estimating attributes of a received signal that includes a plurality of transmitted signals are provided. The amplitude of the received signal is estimated by performing a method of demodulation based on known signal information. The amplitude of an M-ary quadrature amplitude modulated signal is estimated based upon known or ascertainable phase information regarding a plurality of transmitted symbols. The amplitude of a q-ary amplitude shift keyeing signal is estimated based upon known or ascertainable magnitude information regarding a plurality of transmitted symbols. Statistical information is also used for amplitude estimation. | 02-25-2010 |
| 20100046404 | ACQUISITION CIRCUIT FOR LOW CHIP RATE OPTION FOR MOBILE TELECOMMUNICATION SYSTEM - A User Equipment (UE) receives and samples communication signals, where the communication signals have a time frame format, a transmission chip rate and a synchronization code associated with a time slot that includes a midamble that indicates a modulation of the synchronization code where a specified modulation of received synchronization codes identifies the timing for a timeslot in which data is to be received. The UE preferably includes a synchronization code determination circuit, a midamble determination circuit, and a phase modulation sequence detection circuit operatively associated with the midamble determination circuit. The UE can be configured for use with the low chip rate option of the Third Generation Partnership Project (3GPP) Universal Mobile Telecommunication System (UMTS) standards that employ a predefined set of downlink SYNC codes that point to midambles which indicate SYNC code modulation sequence to enables reading of data in a subsequent Broadcast Channel (BCH) message. | 02-25-2010 |
| 20100040088 | MULTIPLEXING CHANNELS BY A MEDIUM ACCESS CONTROLLER - A code division multiple access (CDMA) communication device comprises a medium access controller (MAC) configured to receive data from a plurality of channels. Each channel is associated with a priority and an identifier. The MAC is further configured to multiplex the data of the plurality of channels for transmission over a CDMA channel based on the priority. | 02-18-2010 |
| 20100040039 | METHOD AND SYSTEM WHEREIN TIMESLOTS ALLOCATED FOR COMMON CONTROL CHANNELS MAY BE REUSED FOR USER TRAFFIC - A method and system is disclosed wherein timeslots designated in a wireless communication system as Common Physical Channel (CPCH) timeslots may be reused for user traffic. A CPCH timeslot used in a first cell may be reused by a second cell, assuming the first and second cells transmit control information in different CPCH timeslots, for user traffic. The second cell is permitted to reuse the timeslot in which the first cell is transmitting control information so long as the second cell's reuse of that timeslot does not degrade reception of control information in the first cell. | 02-18-2010 |
| 20100040034 | JOINT SIGNAL DEMODULATION IN A LOW AND HIGH DATA RATE CHANNEL ENVIRONMENT - A receiver is capable of demodulating both high data rate and low data rate transmissions. An antenna receives the high and low data rate transmissions, as a received signal. An interference canceling device cancels a contribution of at least one shared/common channel from the received signal, producing a first interference canceled signal. A first data detector for detecting data of one of the high or low data rate transmissions by processing the first interference canceled signal. An interference canceling device for canceling the detected data of the one transmissions from the first interference canceled signal, producing a second interference canceled signal. A second data detector for detecting data of an other of the high or low data rate transmissions from the second interference canceled signal. | 02-18-2010 |
| 20100034166 | WIRELESS COMMUNICATION METHOD AND SYSTEM FOR SUPPORTING CALL CONTINUITY - A method and system for supporting a handover between a circuit-switched (CS) domain and an Internet protocol (IP) multimedia subsystem (IMS) domain to provide call continuity are disclosed. The system includes a wireless transmit/receive unit (WTRU) and a wireless network. The WTRU includes a call continuity control entity for supporting call continuity between a CS domain and an IMS domain, and a media independent handover (MIH) entity configured to provide MIH services for providing information in a media independent manner. The wireless network includes an MIH entity for providing MIH services for collecting and forwarding information in a media independent manner. A handover between the CS domain and the IMS domain is triggered based on information obtained via MIH services from the MIH entities. The information may be exchanged via an MIH information server. | 02-11-2010 |
| 20100027526 | EFFICIENT FRAME TRACKING IN MOBILE RECEIVERS - A method for determining the validity of a most significant path in a wireless communication system wherein data is transmitted in frame units in a multipath environment begins by accumulating a correlated data sequence N times, each time at a frame offset apart from the previous time. A preliminary noise estimate (PNE) is calculated as an average of the accumulated data values. A preliminary noise threshold (PNT) is calculated according to the equation C | 02-04-2010 |
| 20100027511 | WIRELESS COMMUNICATION SYSTEM WITH SELECTIVELY SIZED DATA TRANSPORT BLOCKS - A wireless transmit receive unit and methods for code division multiple access telecommunications are disclosed that process data in a physical layer and a medium access control (MAC) layer. The physical and MAC layers communicate data between each other via transport channels. The transport channels are associated with logical channels. Logical-channel data for the transport channels is provided in data units having a bit size evenly divisible by an integer N. The respective logical channels associated with a transport channel utilize MAC headers that have a selected modulo N bit size such that there is bit alignment of the MAC headers of all the logical channels associated with a particular transport channel. | 02-04-2010 |
| 20100023833 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR PROCESSING ENHANCED UPLINK SCHEDULING GRANTS - A method for generating a serving grant at a wireless transmit/receive unit is disclosed. An absolute grant channel signal is decoded to obtain an absolute grant from a serving cell. A relative grant channel signal is decoded to obtain a relative grant from a serving radio link set and a relative grant from a non-serving radio link. A first serving grant candidate is generated based on the absolute grant from the serving cell or the relative grant from the serving radio link set. A second serving grant candidate is generated based on the relative grant from the non-serving radio link. The serving grant is generated based on the first serving grant candidate and the second serving grant candidate. | 01-28-2010 |
| 20100023326 | SPEECH ENDODING DEVICE - The present invention is a synthetic speech encoding device that produces a synthetic speech signal which closely matches an actual speech signal. The actual speech signal is digitized, and excitation pulses are selected by minimizing the error between the actual and synthetic speech signals. The preferred pattern of excitation pulses needed to produce the synthetic speech signal is obtained by using an excitation pattern containing a multiplicity of weighted pulses at timed positions. The selection of the location and amplitude of each excitation pulse is obtained by minimizing an error criterion between the synthetic speech signal and the actual speech signal. The error criterion function incorporates a perceptual weighting filter which shapes the error spectrum. | 01-28-2010 |
| 20100022247 | MEASUREMENT REQUEST REPORT EXTENSIONS FOR MEDIA INDEPENDENT HANDOVER - A method and apparatus for generating a measurement report request including media independent handover (MIH) information at a medium access control (MAC) device for use in configuring a physical layer measurement device to measure the physical layer and generate a MIH event report are provided. The request is sent to a physical layer measurement device which is configured using the MIH information. A physical channel is then measured based on the MIH information. A MIH event is generated at the physical layer device and sent to a higher layer device. | 01-28-2010 |
| 20100020856 | DATA DETECTION FOR CODES WITH NON-UNIFORM SPREADING FACTORS - A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix. | 01-28-2010 |
| 20100020751 | MITIGATION OF INTERFERENCE IN CELL SEARCH BY WIRELESS TRANSMIT AND RECEIVE UNITS - A wireless transmit receive unit (WTRU) provides facilitation of cell search. In one embodiment, received samples are split into a plurality of sample sets for processing. Each of the sets is processed and an accumulated result is divided by an estimated noise value. In another embodiment, a code correlator correlates the received signal with a primary synchronization code and an auxiliary code correlator having a same length as the code correlator correlates the received signal with a code having a low cross correlation with the primary synchronization code. In another embodiment, a division of an accumulated result with a noise estimate is performed using indexes of the most significant bits. | 01-28-2010 |
| 20100019971 | METHOD AND SYSTEM FOR POSITIONING MOBILE UNITS BASED ON ANGLE MEASUREMENTS - A method and system for positioning mobile units using angle measurements taken by neighboring mobile units is disclosed. A selected mobile unit and mobile units in the vicinity of the selected mobile unit are selectively instructed to measure and report information related to the position of the selected mobile unit. The reported information is used to compute a position of the selected mobile unit. | 01-28-2010 |
| 20100014617 | METHOD AND APPARATUS FOR SINGULAR VALUE DECOMPOSITION OF A CHANNEL MATRIX - A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive antennas. A Hermitian matrix A=H | 01-21-2010 |
| 20100014480 | SCHEDULING DATA TRANSMISSION BY MEDIUM ACCESS CONTROL (MAC) LAYER IN A MOBILE NETWORK - A method for determining padding compatibility is disclosed. A determination is made of a number of protocol data units (PDUs) for a logical channel mapped to a transport channel such that, for a logical channel allowing segmentation, calculate n wherein n=service data unit size/transport block size (SDU size/TB size), and on a condition that n is an integer, setting the number of PDUs=n. | 01-21-2010 |
| 20100008344 | SELF-CONFIGURABLE WIRELESS LOCAL AREA NETWORK NODE - In a wireless local area network including an access controller (AC) and an access points (AP), the AC transmits a functionality inquiry to the AP. Upon receiving the inquiry, the AP transmits a query response including the functional capabilities of the AP. The AC then generates a map of the functional capabilities present in the network based on the inquiry response. Conflicting or redundant functional capabilities are identified and are disabled, enabled, or reconfigured by instructions from the AC. The AC may selectively enable and/or disable functional capabilities at nodes in the network to provide a more balanced load on the network, and to provide for load sharing by allocating functionalities between and among network nodes having common functional capabilities to satisfy a variety of situations encountered in the network. | 01-14-2010 |
| 20100004018 | ADJUSTING THE AMPLITUDE AND PHASE CHARACTERISTICS OF TRANSMITTER GENERATED WIRELESS COMMUNICATION SIGNALS IN RESPONSE TO BASE STATION TRANSMIT POWER CONTROL SIGNALS AND KNOWN TRANSMITTER AMPLIFIER CHARACTERISTICS - A method and system for adjusting the amplitude and phase characteristics of wireless communication signals generated by an analog radio transmitter, based on transmit power control (TPC) signals received by a base station (BS) and known characteristics of a power amplifier (PA) included in the transmitter. A digital pre-distortion compensation module, having real and imaginary signal paths, receives and processes real and imaginary signal components used to generate the wireless communication signal. The phase and amplitude characteristics of the wireless communication signal are controlled in response to the TPC signals, such that impaired amplitude and phase characteristics of the PA are corrected. | 01-07-2010 |
| 20100002759 | LOW BIAS ESTIMATION OF SMALL SIGNAL-TO-NOISE RATIO - A method implemented by a user equipment includes selecting a first estimate of a signal-to-noise (SNR) ratio, calculating a first amplitude and first noise variance, calculating a second amplitude and a second noise variance, calculating a second SNR, calculating a resolution value, adjusting the first SNR, and performing estimation iterations until the resolution value is equal to a predetermined value. | 01-07-2010 |
| 20100002752 | EFFICIENT MULTIPATH CENTROID TRACKING CIRCUIT FOR A CODE DIVISION MULTIPLE ACCESS (CDMA) SYSTEM - A method implemented in a communication device for tracking a spread spectrum signal having an associated code at a receiver is claimed. Components of the spread spectrum signal are despread using locally generated versions of the associated code, each component having a different code phase. A tracking error is determined based on a quadratic function of the components and a weighting factor relating the signal to the tracking error. The weighting factor is a function of a time shift. A minimum in the tracking error is determined by adjusting the time shift. | 01-07-2010 |
| 20100002648 | METHOD AND SYSTEM FOR TRANSFERRING WIRELESS TRANSMIT/RECEIVE UNIT-SPECIFIC INFORMATION - The present invention is related to a method and system for transferring wireless transmit/receive unit (WTRU)-specific information to support enhanced uplink (EU) operation in a wireless communication system. A radio network controller (RNC) obtains WTRU-specific information, and transfers the WTRU-specific information to the Node-Bs. Each Node-B is configured to schedule uplink transmissions from a WTRU and utilizes the WTRU-specific information in operation of EU transmissions. | 01-07-2010 |
| 20090325497 | RECEIVED COMMUNICATION SIGNAL PROCESSING METHODS AND COMPONENTS FOR WIRELESS COMMUNICATION EQUIPMENT - A method and apparatus for processing received wireless communications are provided. Power delay profiles (PDPs) including PDP elements are processed. Less than half of the PDP elements of each PDP are selected. The selected PDP elements are combined based on position, and the combined PDP elements are qualified for further signal processing to determine a received signal path associated with the PDP. | 12-31-2009 |
| 20090323775 | TRANSMIT PROCESSING USING RECEIVER FUNCTIONS - A method and apparatus for transmitting data in code division multiple access communications. The method includes processing spread first data with a channel response matrix using an equalization circuit to pre-equalize the spread data to compensate for a channel response prior to transmission. The pre-equalized data is received and recovered by a receiver. Second data, transmitted from the receiver, is received and recovered using the equalization circuit to equalize the second data to compensate for a channel response that the first data encountered. | 12-31-2009 |
| 20090323769 | SEGMENT-WISE CHANNEL EQUALIZATION BASED DATA ESTIMATION - Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received communications are sampled to produce a received vector of sequential samples. The received vector is processed to produce a plurality of segments. Each segment is processed separately to estimate data of the received communications. | 12-31-2009 |
| 20090323592 | METHOD AND APPARATUS FOR DYNAMICALLY ADJUSTING DATA TRANSMISSION PARAMETERS AND CONTROLLING H-ARQ PROCESSES - In a wireless communication system including a wireless transmit/receive unit (WTRU) which transfers data to a Node-B, data transmission parameters such as modulation and coding scheme (MCS) and transport block set (TBS) size are dynamically adjusted on a transmission time interval (TTI) basis, and hybrid-automatic repeat request (H-ARQ) processes used to control the transfer of data between the WTRU and the Node-B are initiated and released, as required. The WTRU transmits and retransmits data to the Node-B through an enhanced uplink (EU) dedicated channel (E-DCH) in accordance with data feedback information received from the Node-B. The WTRU queues data for transmission, and determines a transmission status of the data. The transmission status is set to one of “new transmission,” “successful transmission,” “retransmission” and “restarted transmission.” For each TTI, the WTRU initiates an EU transmission to the Node-B which identifies the assigned H-ARQ process, TBS size and MCS. | 12-31-2009 |
| 20090318159 | SIGNALING CONNECTION ADMISSION CONTROL IN A WIRELESS NETWORK - A method for admission control of control plane signaling requests includes receiving a signaling request. Upon receipt of the signaling connection request, a first determination is performed to determine whether to provide admission to common resources. When the first determination is negative, a second determination is performed to determine whether to provide admission to dedicated resources. When the second determination is negative, the signaling request is rejected. When the second determination is positive, the request is admitted to dedicated resources. When the first determination is positive, a third determination is performed to determine whether the quality of the signaling request is high or low. If the quality of the request is high, the signaling request is admitted to common resources. When the quality is low, a fourth determination is performed to determine whether to provide admission to dedicated resources. If the fourth determination is positive, the request is admitted to dedicated resources. If the fourth determination is negative, the request is admitted to common resources. | 12-24-2009 |
| 20090316843 | METHOD AND APPARATUS FOR PARALLEL MIDAMBLE CANCELLATION - Method and apparatus for performing midamble cancellation to remove midamble interference from the convolution tail of data field | 12-24-2009 |
| 20090316768 | METHOD AND APPARATUS FOR GENERATING EQUALIZER FILTER TAP COEFFICIENTS - A method and apparatus generating an error signal and an update vector signal used to generate filter tap coefficients for an equalizer filter residing in an equalizer. The equalizer filter outputs an equalized signal in response to receiving a sample data stream. The error signal is generated by down-sampling the equalized signal, subtracting the equalized signal from a reference signal, and filtering and down-sampling the resulting signal. Simultaneously, the update vector signal is generated by converting scalar samples of the sample data stream to a data vector signal and descrambling, filtering, and down-sampling the data vector signal. A tap coefficients generator is used to generate the filter tap coefficients for updating the equalizer filter based on the error signal and the update vector signal. | 12-24-2009 |
| 20090316765 | METHOD AND APPARATUS FOR REDUCING THE PROCESSING RATE OF A CHIP-LEVEL EQUALIZATION RECEIVER - A method and apparatus for reducing the processing rate when performing chip-level equalization (CLE) in a code division multiple access (CDMA) receiver which includes an equalizer filter. Signals received by at least one antenna of the receiver are sampled at M times the chip rate. Each sample stream is split into M sample data streams at the chip rate. Multipath combining is preferably performed on each split sample data stream. The sample data streams are then combined into one combined sample data stream at the chip rate. The equalizer filter performs equalization on the combined sample stream at the chip rate. Filter coefficients are adjusted by adding a correction term to the filter coefficients utilized by the equalizer filter for a previous iteration. | 12-24-2009 |
| 20090316762 | SCALING USING GAIN FACTORS FOR USE IN DATA DETECTION - Data is estimated from a received vector comprising a plurality of communications. A received wireless signal is converted to a baseband signal, which is sampled to produce a received vector. Channel responses are estimated for the received communications. The noise variance is estimated. The noise variance is scaled by a scaling factor. Samples are processed using the estimated channel responses and the scaled noise variance to produce a spread data vector. The spread data vector is despread to recover the data of the received wireless signal. | 12-24-2009 |
| 20090316759 | MULTI-USER DETECTION USING EQUALIZATION AND SUCCESSIVE INTERFERENCE CANCELLATION - A method and apparatus for multi-user detection using equalization and successive interference cancellation is provided. A signal is received in a shared spectrum. Samples of the received signal are produced as a received vector. The received vector is segmented into a plurality of vector segments. For each segment, symbols for a plurality of communications are successively determined by determining symbols for a communication and removing a contribution of that communication from the vector segment. The determined symbols are assembled into a data vector for each communication. | 12-24-2009 |
| 20090316665 | DOWNLINK TRANSMISSION SYNCHRONIZATION AND DATA BUFFER SIZING IN A RADIO ACCESS NETWORK - Method and apparatus are disclosed for calculating a target connection frame number (CFN) for a data frame in wireless communications. An update to an offset between the CFN and a radio access network frame number is computed. A target CFN variable is incremented in response to a received timer signal. The value of an update variable is checked to determine whether a new value of the offset has been received since a previous update to the offset. A new target CFN is calculated using a current target CFN and the new value of the offset on a condition that the new value of the offset has been received. The current target CFN is set equal to the new target CFN. | 12-24-2009 |
| 20090316640 | METHOD FOR CHANNEL ASSIGNMENTS IN WIRELESS SYSTEMS - A wireless transmit/receive unit includes a receiver and a processor. The receiver is configured to receive a plurality of high-speed shared control channels (HS-SCCHs), wherein the plurality of HS-SCCHs are received over a plurality of discrete time intervals. The processor is configured to instruct the receiver to receive all of the plurality of HS-SCCHs during one of the plurality of discrete time intervals. | 12-24-2009 |
| 20090316307 | METHOD AND APPARATUS TO IMPROVE CHANNEL QUALITY FOR USE IN WIRELESS COMMUNICATIONS SYSTEMS WITH MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) ANTENNAS - Apparatus and method that employ a technique which improves SINR in a communication system utilizing MIMO antennas are described. Transmitter and receiver components use fixed transmit and receive beamforming matrices and variable transmit and receive beamforming vectors. A method of channel conditioning using an iterative closed loop process is also described. | 12-24-2009 |
| 20090312048 | METHOD AND APPARATUS FOR PERFORMING CLOSED-LOOP TRANSMIT POWER CONTROL FOR FRACTIONAL DEDICATED PHYSICAL CHANNEL - A method and apparatus for performing closed loop transmit power control of a fractional dedicated physical channel (F-DPCH) are disclosed. Transmit power control (TPC) symbols on an F-DPCH and common pilot channel (CPICH) symbols are received. A short term signal power estimate is calculated using the TPC symbols, and a short term noise power estimate is calculated using the CPICH symbols. A short term signal-to-interference ratio (SIR) on the F-DPCH is calculated. A long term signal power estimate and a long term noise power estimate are calculated using the TPC symbols. A long term SIR is calculated and compared to a TPC quality target. An SIR target is adjusted based on comparison of the long term SIR to the TPC quality target. The short term SIR is compared to the SIR target and a TPC command is generated based on comparison of the short term SIR to the SIR target. | 12-17-2009 |
| 20090310652 | BASE STATION HAVING A SET OF PHASED ARRAY ANTENNAS - A wireless communications handset configured to receive a multipath spread spectrum signal comprises a first antenna and a second antenna. A first receiver is coupled to the first antenna and a second receiver is coupled to the second antenna. A delay device is coupled to the first receiver and delays the portion of the multipath signal received by the first antenna. The delayed signal and the in-phase portion of the signal are then combined in a combining device. A despreader coupled to the combining devices generates a magnitude value of the combined signal. The current magnitude value is then compared to one or more previous magnitude values to determine if the delay should be increased or decreased. A comparison device outputs a comparison signal based on the current and previous magnitude values and provides the comparison signal to the delay device to adjust the delay appropriately. | 12-17-2009 |
| 20090307487 | APPARATUS AND METHOD FOR PERFORMING TRUSTED COMPUTING INTEGRITY MEASUREMENT REPORTING - The present application discloses a method and apparatus for using trusted platform modules (TPM) for integrity measurements of multiple subsystems. The state of the platform configuration registers (PCR) after boot up are stored as the base state of the system. Base state in this context is defined as the state of the system when the startup of the system is complete and can only be changed when new software is loaded at the kernel level. This state itself can be reported to challengers who are interested in verifying the integrity of the operating system. Also disclosed is a method where the application that is to be verified, requests that its state be extended from the base state of the system. When such a request is received, the state of the system is extended directly from the base state PCR contents and not from the system state. | 12-10-2009 |
| 20090303967 | USER EQUIPMENT (UE) ASSISTED SYSTEM DATABASE UPDATE - A wireless communication system includes a base station that receives information regarding neighboring wireless systems and updates and stores this information for use in handover of user equipments (UEs). | 12-10-2009 |
| 20090303935 | METHOD AND SYSTEM OF USING SMART ANTENNAS FOR BACKHAULING - A method and system for utilizing smart antenna in transmission of messages between nodes are disclosed. A wireless communication system includes a plurality of nodes, and each node is capable of being connected to each other node. At least a portion of the nodes are provided with a smart antenna configured to generate a plurality of directional beams. Each node maintains a list of other nodes and beam configuration information to be used in transmission of messages to other nodes. When a source node is required to transmit to a target node, the source node retrieves the beam configuration information and transmits with a directional beam directed to the target node. | 12-10-2009 |
| 20090298528 | METHOD FOR CONTROL OF CONTENTION-BASED WIRELESS ACCESS - The present invention is a method for controlling access to a contention-based communication channel. Error types of a transmitted communication signal over the communication channel are classified and corresponding parameters of the communication channel are adjusted in response to the classification to control the rate at which individual error types occur. | 12-03-2009 |
| 20090298464 | MOBILE CELLULAR DEVICE USING ACCESS NUMBERS - A first access number stored on the removable computer chip module is retrieved by a mobile cellular device. The first access number to a cellular network is transmitted by the mobile cellular device using spread spectrum communications. The mobile cellular device receives a second access number in response to the cellular network allowing the mobile cellular device access. The mobile cellular device transmits the second access number to the cellular network using spread spectrum communications for subsequent access to the cellular network. | 12-03-2009 |
| 20090296787 | WIRELESS COMMUNICATION METHOD AND SYSTEM FOR ASSIGNING MULTI-PATHS TO RAKE RECEIVER FINGERS - A wireless communication method and system for assigning multi-paths to Rake receiver fingers. A Rake finger assignment database is established in which multi-path signals are categorized into a verified group and an unverified group. Each multi-path is assigned to an individual bin in the database. Each bin includes a pilot phase data field, an antenna data field, a code data field, an averaged signal strength data field, an assigned flag data field, a verification flag data field, an update flag data field, an assigned Rake finger number data field and an assignment time counter data field. The multi-path signals in the verified group are further categorized into an assigned subgroup and an unassigned subgroup. During a measurement interval, each of a plurality of newly measured multi-path signals is compared to the multi-path signals in the database and is processed accordingly. | 12-03-2009 |
| 20090296619 | METHOD AND SYSTEM FOR EFFICIENT ADDRESSING AND POWER SAVINGS IN WIRELESS SYSTEMS - A method for addressing groups of stations in a wireless communication system begins by assigning the stations in the system into a number of groups. A group identifier is signaled to each station and the group identifier is indicated in a frame for each group that has data in the frame. The addressing method can be applied to power savings for the station, wherein the station enters a power saving mode if the group identifier for the station is not present in the frame. | 12-03-2009 |
| 20090290630 | ADAPTIVE EQUALIZER WITH A DUAL-MODE ACTIVE TAPS MASK GENERATOR AND A PILOT REFERENCE SIGNAL AMPLITUDE CONTROL UNIT - An adaptive equalizer including an equalizer filter and a tap coefficients generator used to process a sample data stream derived from a plurality of received signals is disclosed. The tap coefficients generator includes an equalizer tap update unit, a vector norm square estimator, an active taps mask generator, a switch and a pilot amplitude reference unit used to minimize the dynamic range of the equalizer filter. A dynamic mask vector is used to mask active taps generated by the equalizer tap update unit when an unmasked signal output by the equalizer filter is selected by the switch to generate an error signal fed to the equalizer tap update unit. A fixed mask vector is used to mask active taps generated by the equalizer tap update unit when a masked signal output by the equalizer filter is used to generate the error signal. | 11-26-2009 |
| 20090290617 | METHOD AND APPARATUS FOR COMPUTING SIR OF TIME VARYING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for correcting symbols of a common pilot channel (CPICH) to generate an accurate signal-to-interference ratio (SIR) estimate in a wireless communication system are disclosed. In one embodiment, a non-stationary mean of a group of the CPICH symbols is estimated, the CPICH symbols are delayed, and the CPICH symbols are corrected by dividing the delayed CPICH symbols by the estimated non-stationary mean of the group of CPICH symbols. In another embodiment, a signal power estimate is generated based on the magnitude of CPICH symbols, a noise power estimate is generated by subtracting the signal power estimate from a total power estimate based on the magnitude of the CPICH symbols, and a SIR estimate is generated for symbols that have undergone a time varying gain by dividing the signal power estimate by the noise power estimate. | 11-26-2009 |
| 20090290598 | METHOD AND APPARATUS FOR SUPPORTING RLC RE-SEGMENTATION - A method and apparatus for radio link control (RLC) re-segmentation are disclosed. An original RLC protocol data unit (PDU) is generated from at least one RLC service data unit (SDU). The RLC PDU size is within a flexible maximum RLC PDU size. The original RLC PDU is stored in a retransmission buffer. If transmission of the original RLC PDU fails and the original RLC PDU size is larger than an updated maximum RLC PDU size, the original RLC PDU is segmented to segmented RLC PDUs. If transmission of one of the segmented RLC PDUs fails, the original RLC PDU may be re-segmented to smaller size RLC PDUs, or the segmented RLC PDU may be sub-segmented. Alternatively, the failed RLC PDU may be processes as an RLC SDU to generate encapsulating RLC PDUs for carrying the RLC PDU. Alternatively, an RLC SDU corresponding to the failed RLC PDU may be re-segmented. | 11-26-2009 |
| 20090274197 | METHOD AND APPARATUS FOR COMPENSATING FOR PHASE NOISE OF SYMBOLS SPREAD WITH A LONG SPREADING CODE - A method and apparatus for compensating for phase noise of symbols spread with a long spreading code are disclosed. To compensate for the phase noise, a phase error estimate is generated from despread symbols with a short spreading code. A phase correcting phasor is applied to chip rate data before despreading the data with a long spreading code. A signal-to-interference ratio (SIR) on a common pilot channel (CPICH) may be calculated by spreading the data with a parent spreading code in an orthogonal variable spreading factor (OVSF) code tree and by combining symbols. Alternatively, a magnitude of the symbols may be used in estimating the SIR. The SIR of a channel using a short spreading code and an SIR of a channel using a long spreading code are measured. The SIR of the channel with the long spreading code may be compensated in accordance with a difference between degradation of the SIRs. | 11-05-2009 |
| 20090274194 | SPREAD-SPECTRUM COMMUNICATION UNIT - A set of spread-spectrum units is capable of operating as a base station or as a remote unit. Each spread-spectrum unit includes a base subunit or a remote subunit, each subunit having a receiver for receiving spread-spectrum signals at a first frequency transmitted from the spread-spectrum units; a signal despreader for despreading the spread-spectrum; a demodulator for demodulating the despread-spread-spectrum signals; a combiner for combining the demodulated signals, and a local signal; a converter for converting the combined signal to a base-data signal; a spread-spectrum circuit for processing the base-data signal; and a transmitter for transmitting at a second frequency the processed base-data signal as a base-spread-spectrum signal. | 11-05-2009 |
| 20090274125 | METHOD AND SYSTEM FOR ORGANIZING THE CELLS OF A WIRELESS COMMUNICATION SYSTEM AND ALLOCATING RESOURCES TO PROVIDE MULTIMEDIA BROADCAST SERVICES - A system and method for configuring the system for configuring a wireless multi-cell communication to provide multimedia broadcast services (MBMS) to a plurality of wireless transmit/receive units (WTRUs). The cells of the communication system are organized into a plurality of sets of one or more cells. Resource units are assigned to each set of cells in the communication system. The assigned resource units are allocated in each cell of the communication system for MBMS transmission. The WTRUs receive information indicating how to access the resource units allocated for MBMS transmission. The WTRUs receive the MBMS from one or more of the cells of the communication system. | 11-05-2009 |
| 20090274084 | USER EQUIPMENT HAVING IMPROVED POWER SAVINGS DURING FULL AND PARTIAL DTX MODES OF OPERATION - The present invention achieves power savings by turning off all or some of the baseband processing for codes and timeslots that have not been transmitted due to full or partial DTX. With respect to partial DTX, the transmitted codes and associated timeslots and radio frames within the shortest TTI in the CCTrCH are determined from the received TFCI. Thereafter, the receiver is turned off for the unused codes as indicated by the received TFCI. With respect to full DTX, following TFCI reception, the receiver is turned off for all timeslots within the shortest TTI. | 11-05-2009 |
| 20090268671 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR IMPLEMENTING ACCESS POINT STARTUP AND INITIAL CHANNEL SELECTION PROCESSES - A startup process of an access point (AP) includes a discovery phase and an announcement phase. During the discovery phase, the AP detects neighboring APs from its own extended service set (ESS), neighboring APs from different ESSs, and external sources of interference. During the announcement phase, the AP transmits its beacon signals at maximum power in order to accelerate recognition by neighboring APs running the discovery phase. An automatic initialization channel selection process of an AP scans channels the AP will use to communicate. Information of each scanned channel is recorded and a best performance channel is determined for use by the AP. | 10-29-2009 |
| 20090268644 | USER EQUIPMENT FOR SYNCHRONIZING TO A TDD BASE STATION - A time division duplex (TDD) user equipment (UE) is configured to synchronize to a TDD base station. The UE includes an antenna, a primary synchronization code matched filter, a first plurality of secondary synchronization code matched filters, a second plurality of secondary synchronization code matched filters, and a processor in communication with the first and second plurality of secondary synchronization code matched filters. The first plurality of secondary synchronization code matched filters determines secondary synchronization codes sent on a first carrier and the second plurality of secondary synchronization code matched filters determines secondary synchronization codes sent on a second carrier. The processor is configured to determine a code group assignment and selected timeslot based upon an analysis of the secondary synchronization codes sent on the first and second carriers. | 10-29-2009 |
| 20090264146 | OUTER LOOP POWER CONTROL FOR WIRELESS COMMUNICATIONS - An integrated circuit configured for outer loop power control uses data transmitted in temporary dedicated channel allocations. A target metric, preferably, target SIR, is adjusted with differing step up and step down increments to converge on a relatively low steady state level of step up and step down target metric adjustments. The initial target SIR and the transient step size for target SIR adjustment is determined in a dynamic way in the outer loop power control for each Temp-DCH allocation of non-real time data. | 10-22-2009 |
| 20090264145 | DYNAMIC BIAS FOR RF POWER AMPLIFIERS - A radio frequency power amplifier control circuit amplifies a radio frequency input signal to produce an output signal and a current mirror performs a dynamic bias control by maintaining the radio frequency amplifier operating with a linear amplifier gain. | 10-22-2009 |
| 20090262713 | SYNCHRONIZATION OF TIMING ADVANCE AND DEVIATION - Apparatus and method for reducing the latency from timing deviation (TD) measurement to time advance (TA) adjustment. A deterministic procedure to coordinate time advance (TA) commands and timing deviation (TD) measurements is used so that failed transmissions or mobile terminals signal propagation changes can be recognized and corrected much more rapidly. Radio resource efficiency is maximized by minimizing signaling overhead through effectively reducing the frequency of time advance commands. This is accomplished by using TA command signals which include a Connect Frame Number (CFN) to specify particular radio frames for time advance (TA) adjustment. The potential for timing deviation (TD) measurements to be incorrectly processed in conjunction with adjusting a physical reception window and calculating mobile termination location is minimized, without excessive command signaling requirements. | 10-22-2009 |
| 20090258646 | CALL SETUP PROCEDURE IN AN EVOLVED THIRD GENERATION RADIO ACCESS NETWORK - A method and system for call setup in an evolved third generation (3G) radio access network are disclosed. A wireless transmit/receive unit (WTRU) sends its identity to a core network (CN) for call setup when the WTRU is in an RRC_disconnected state. The CN verifies the identity and sends an authentication vector to the WTRU. The WTRU sends a service access request message including an authentication response to the CN via a Node-B. The Node-B performs an admission control. The CN attaches the WTRU if the authentication response is same to an expected response. The Node-B then allocates radio resources to the WTRU. The Node-Bs may be directly connected, or may be connected to a control plane server which performs admission control. When the WTRU is transitioning from an RRC_idle state to an RRC_connected state, the WTRU may or may not need to re-authenticate again. | 10-15-2009 |
| 20090257472 | INTERFERENCE CANCELLATION IN A SPREAD SPECTRUM COMMUNICATION SYSTEM - A code division multiple access communication system transmits a pilot and traffic signal over a shared spectrum. The pilot and traffic signal have an associated code and are received over the shared spectrum. The received signals are sampled and the samples are delayed to produce a window. A weighted value for each despread pilot code window sample is determined using an adaptive algorithm. Each window sample is despread with a traffic code. Each despread traffic code window sample is weighted according to a weight corresponding to its respective pilot code sample. | 10-15-2009 |
| 20090257362 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR MANAGING RADIO RESOURCES - During a contention-free period, or silent measurement period, of a first wireless communications channel, signals received on a second wireless communications channel are analyzed. The results of the analysis are used to perform advanced radio resource management functions, such as frequency selection, load balancing, or power management. Each of a plurality of wireless channels may be measured in order to perform the advanced radio resource management functions. During the analysis, an energy detect threshold may be lowered to a minimal value. | 10-15-2009 |
| 20090253453 | METHOD AND SYSTEM FOR CONTROLLING TRANSMISSION POWER OF A DOWNLINK SIGNALING CHANNEL BASED ON ENHANCED UPLINK TRANSMISSION FAILURE STATISTICS - A method and system for controlling the transmission power of at least one downlink (DL) enhanced uplink (EU) signaling channel such that enhanced dedicated channel (E-DCH) DL signaling is delivered efficiently and reliably. The system includes at least one wireless transmit/receive unit (WTRU), at least one Node-B and a radio network controller (RNC). At least one of the WTRU and the Node-B compute EU transmission failure statistics on the DL EU signaling channel and report the EU transmission failure statistics to the RNC. The RNC then adjusts a transmission power offset of the DL EU signaling channel to be used in determining transmission power level of the DL EU signaling channel at the Node-B based on the EU transmission failure statistics. | 10-08-2009 |
| 20090252123 | APPARATUS AND METHODS FOR DETERMINATION OF GAIN FACTORS FOR WIRELESS COMMUNICATION TRANSMISSION POWER - Apparatus and methods for wireless communication transmission power control are provided. Determination of gain factors and adjustments for physical channel reconfiguration in the context of transmission power control are addressed. Preferably, implementation is in conjunction with communication systems in which wireless communications are conducted between wireless transmit receive units (WTRUs) using multiple channels that are concurrently transmitted. | 10-08-2009 |
| 20090247212 | FAST ADAPTIVE POWER CONTROL FOR A VARIABLE MULTIRATE COMMUNICATIONS SYSTEM - A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal in which the user data signal having a first rate is converted into a transmission data signal having a faster second rate for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of the first and second rates such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. Preferably, the user data signal having the first rate is converted into the transmission data signal having the second faster rate by repeating selected data bits whereby the energy per bit to noise spectrum density ratio is increased in the transmission data signal. | 10-01-2009 |
| 20090245411 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR FORMING, STEERING AND SELECTIVELY RECEIVING A SUFFICIENT NUMBER OF USABLE BEAM PATHS IN BOTH AZIMUTH AND ELEVATION - A wireless communication method of exploiting the radio frequency (RF) physical environment to establish a sufficient number of usable multiple paths of RF propagation for facilitating communications. The method is implemented in a wireless communication system including at least one transmitter and at least one receiver. The receiver's antenna is directed towards one of a plurality of reception paths and receives a data stream from the transmitter via the reception path that the receiver antenna is directed towards. The receiver decodes the data stream, reconstructs a modulation pattern of the decoded data stream, and subtracts the reconstructed data stream from a sum of all of the signals received by the receiver via the reception paths. The receiver provides received signal direction information associated with reception paths to the transmitter. The transmitter adjusts and/or eliminates one or more of the reception paths that are unusable based on the signal direction information. | 10-01-2009 |
| 20090245220 | RANDOM ACCESS CHANNEL PREAMBLE - One out of sixteen preamble signatures is selected. A code is produced based on the selected preamble signature. The produced code is phase rotated to produce a processed preamble signature signal. The processed preamble signature signal is used in processing the CDMA RACH signal and the CDMA RACH signal is used to access a CDMA system. | 10-01-2009 |
| 20090238145 | METHOD AND APPARATUS FOR WIRELESS COMMUNICATION WITH LOW-OVERHEAD MOBILITY MANAGEMENT - A method and apparatus for supporting handover of mobile communications is provided. A router performs routing services in a service area. The router maintains a location table configured to store current router addresses of mobile nodes that have the router as a home router. The router receives data intended for mobile nodes that are listed in the location table and are in the routers service area. The router receives a user datagram protocol (UDP) message from a mobile node when it leaves the service area. The UDP message includes an IP address of a new router in the mobile node's new service area. The router updates the location table with the new IP address and transmits data intended for the mobile node to the new router until the data is redirected at the source. | 09-24-2009 |
| 20090238124 | METHOD AND APPARATUS FOR COMBINED MEDIUM ACCESS CONTROL AND RADIO LINK CONTROL PROCESSING - A method and apparatus for combined medium access control (MAC) and radio link control (RLC) processing are disclosed. For uplink processing, a combined MAC/RLC (CMR) entity generates an SDU descriptor and allocates protocol data unit (PDU) descriptor resources. A protocol engine (PE) populates a PDU descriptor for each PDU carrying at least a portion of the SDU and generates a MAC PDU in a physical layer shared memory based on the SDU descriptor and the PDU descriptor. The MAC PDU is generated while moving RLC SDU data from the bulk memory to the physical layer shared memory. For downlink processing, received MAC PDUs are stored in the physical layer shared memory. The PE reads MAC and RLC headers in the MAC PDU and populates an SDU segment descriptor (SD) and corresponding PDU descriptors for each SDU segment. The CMR entity merges SDU SDs that comprise a same RLC SDU. | 09-24-2009 |
| 20090233577 | METHOD AND APPARATUS FOR SELECTING THE MOST COST-EFFICIENT PAYMENT PROVIDER TO PAY FOR COMMUNICATION SERVICES - A method and apparatus for selecting the most cost-efficient payment provider to pay for communication services are disclosed. A calling electronic device communicates alternative payment provider data to a network via a communications link. The network examines costs charged by a plurality of alternative payment providers indicated by the alternative payment provider data. The network determines and contacts the most cost-efficient payment provider to determine if the contacted payment provider will accept responsibility for paying for at least a portion of the communication services. | 09-17-2009 |
| 20090228753 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR DETECTING AND DECODING ENHANCED DEDICATED CHANNEL HYBRID AUTOMATIC REPEAT REQUEST INDICATOR CHANNEL TRANSMISSIONS - A wireless communication method and apparatus for detecting and decoding enhanced dedicated channel (E-DCH) hybrid automatic repeat request (H-ARQ) indicator channel (E-HICH) transmissions are disclosed. A wireless transmit/receive unit (WTRU) receives E-HICH transmissions and detects an H-ARQ indicator transmitted via the E-HICH by performing a binary hypothesis test. The WTRU then generates an acknowledgement (ACK) message or a non-acknowledgement (NACK) message based on the detected H-ARQ indicator. A reliability test may be further performed to improve performance, whereby the binary hypothesis test may be performed only if the reliability test is passed. | 09-10-2009 |
| 20090221329 | RELIABILITY DETECTION OF CHANNEL QUALITY INDICATOR (CQI) AND APPLICATION TO OUTER LOOP POWER CONTROL - A method for determining a channel quality in wireless communications includes receiving a high speed shared control channel (HS-SICH) transmission. An expected number of HS-SICH transmissions and a number of unsuccessful HS-SICH transmissions are counted. The number of unsuccessful HS-SICH transmissions includes a number of failed HS-SICH transmissions and a number of missed HS-SICH transmissions. The expected number of HS-SICH transmissions and the number of unsuccessful HS-SICH transmissions over a fixed time period are periodically reported, whereby the reporting is an indication of the channel quality. | 09-03-2009 |
