| Patent application number | Description | Published |
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| 20090116570 | METHOD AND APPARATUS FOR GENERATING CHANNEL QUALITY INDICATOR, PRECODING MATRIX INDICATOR AND RANK INFORMATION - A method and apparatus for generating channel quality indicator (CQI), precoding matrix indicator (PMI) and rank information are disclosed. The method and apparatus reduces feedback overhead and defines differential CQI information in an orthogonal frequency division multiplex (OFDM) symbol. | 05-07-2009 |
| 20090168727 | METHODS AND APPARATUS FOR SELECTING OR RESELECTING A HOME NODE-B (CLOSED SUBSCRIBER GROUP (CSG) CELL) AMONG CELLS HAVING COLLIDING PHYSICAL LAYER SIGNALS - A method and apparatus for selecting or reselecting a home Node-B (HNB), (i.e., a closed subscriber group (CSG) cell), among cells having colliding physical layer signals are disclosed. Once the identity (ID) of an HNB is determined, measurements needed to support cell selection or reselection are performed. A broadcast channel that broadcasts an HNB ID is detected and synchronized to, and information obtained from the broadcast channel is forwarded to a non-access stratum (NAS). The broadcasted HNB ID is checked against an HNB white-list provided by the NAS to determine whether the HNB is suitable for a wireless transmit/receive unit (WTRU). The WTRU selects the HNB to camp on, or changes from a cell currently serving the WTRU to the HNB if it is determined to be more suitable than the current serving cell. | 07-02-2009 |
| 20090168731 | METHOD AND APPARATUS FOR HANDLING INTERACTIONS BETWEEN MEASUREMENT GAP, AUTOMATED REPEAT REQUEST, DISCONTINUOUS RECEPTION AND DISCONTINUOUS TRANSMISSION IN WIRELESS COMMUNICATIONS - A method and apparatus for handling interactions between measurement gap, automated repeat request, discontinuous reception and discontinuous transmission in wireless communications are disclosed. The method and apparatus are for real-time data and non-real time data in both an uplink and a downlink. | 07-02-2009 |
| 20090175214 | METHOD AND APPARATUS FOR COOPERATIVE WIRELESS COMMUNICATIONS - A method and apparatus for cooperation in wireless communications. Cooperation is considered among a number of network elements, including at least one wireless transmit-receive unit, at least one relay station, and at least one base station. | 07-09-2009 |
| 20090196248 | TRANSPORT FORMAT COMBINATION SELECTION IN A WIRELESS TRANSMIT/RECEIVE UNIT - A method and apparatus for selecting a TFC in a wireless transmit/receive unit (WTRU) is disclosed. The WTRU estimates a transmit power for each of a plurality of available transport format combinations (TFCs). A TFC is selected for an uplink dedicated channel and a TFC is selected for an enhanced uplink (EU) channel. The TFC for the dedicated channel is selected first and independently of the TFC selection of the EU channel. The TFC for the EU channel is selected within a remaining WTRU transmit power after the TFC selection for the dedicated channel. | 08-06-2009 |
| 20090202029 | OPTIMIZED PRIMARY SYNCHRONIZATION SEQUENCES FOR DEDICATED MULTIMEDIA BROADCAST/ MULTICAST SERVICE - A method optimizes a selection of primary synchronization channel (P-SCH) sequences from an available set of P-SCH indices for a dedicated Multimedia Broadcast/Multicast Service (MBMS). The criteria for selecting P-SCH indices include coprimeness, frequency offset sensitivity, multipath sensitivity, cross-correlation property in the time domain, auto-correlation property in the time domain and computation complexity at the receiver. | 08-13-2009 |
| 20090232054 | BEHAVIOR FOR WIRELESS TRANSMIT/RECEIVE UNIT AND MAC CONTROL ELEMENTS FOR LTE DRX OPERATIONS - A wireless transmit/receive unit (WTRU) stops discontinuous reception (DRX) timers that are running and that are related to uplink and/or downlink transmissions during a DRX time period. The WTRU stops the DRX timers in response to receiving a medium access control (MAC) control element signal from an eNode-B. | 09-17-2009 |
| 20090232118 | COORDINATED UPLINK TRANSMISSION IN LTE DRX OPERATIONS FOR A WIRELESS TRANSMIT RECEIVE UNIT - A method and apparatus for discontinuous reception (DRX) operation in a wireless transmit receive unit aligns uplink and downlink transmissions with a DRX cycle. The transmission may be a channel quality indicator report, a sounding reference signal, or a silence descriptor among other downlink and uplink transmissions. | 09-17-2009 |
| 20090239539 | TIMING AND CELL SPECIFIC SYSTEM INFORMATION HANDLING FOR HANDOVER IN EVOLVED UTRA - A method and apparatus for reducing handover time includes a wireless transmit receive unit receiving cell specific information in a downlink signal. The downlink signal is one of a set of signals included in a handover process. | 09-24-2009 |
| 20090257408 | METHOD FOR TRANSMISSION TIME INTERVAL BUNDLING IN THE UPLINK - A method and apparatus for supporting uplink Transmission Time Interval (TTI) bundling in Long Term Evolution (LTE) is provided. Described are related method and apparatus for signaling, activation/deactivation and wireless transmit/receive unit (WTRU) behavior. | 10-15-2009 |
| 20090285180 | METHOD AND APPARATUS FOR ACCESSING A RANDOM ACCESS CHANNEL BY SELECTIVELY USING DEDICATED OR CONTENTION-BASED PREAMBLES DURING HANDOVER - A method and apparatus for accessing a random access channel (RACH) during handover are disclosed. A handover procedure is initiated and a maximum handover interruption timer is activated. A dedicated preamble is transmitted in an attempt to access the RACH on a condition that the dedicated preamble is reserved in a current random access opportunity and the maximum handover interruption timer has not expired. A contention-based preamble is transmitted in an attempt to access the RACH on a condition that a dedicated preamble is not reserved in a current random access opportunity. If the maximum handover interruption timer has expired, a contention-based preamble is transmitted in an attempt to access the RACH. | 11-19-2009 |
| 20090287976 | METHOD AND APPARATUS FOR EFFICIENTLY UTILIZING HARQ PROCESSES FOR SEMI-PERSISTENT AND DYNAMIC DATA TRANSMISSIONS - A method and apparatus are disclosed for efficient hybrid automatic repeat request (HARQ) process utilization for semi-persistent and dynamic data transmissions, wherein a reserved HARQ process identification (ID) can be reused. A subset of a plurality of HARQ process IDs is reserved to use for a semi-persistent allocation, and data is transmitted based on the semi-persistent allocation. A dynamic allocation is received via a physical downlink control channel (PDCCH). At least one of the reserved HARQ process IDs is selectively used for transmitting data based on the dynamic allocation. | 11-19-2009 |
| 20090318177 | METHOD AND APPARATUS FOR LTE SYSTEM INFORMATION UPDATE IN CONNECTED MODE - A method and apparatus for a wireless transmit receive unit (WTRU) to receive system information updates. This includes the WTRU aligning a discontinuous reception (DRX) on-duration with a system information update cycle such that the system information update cycle is a multiple of a DRX cycle. | 12-24-2009 |
| 20090323842 | MAC MULTIPLEXING FOR UPLINK MIMO - A method and apparatus for logical channel prioritization in a wireless transmit receive unit (WTRU), including the WTRU receiving multiple streams of a multiple input/multiple output (MIMO) signal, a physical layer (PHY) of the WTRU providing an indicator for each of the multiple streams to a medium access control (MAC) layer of the WTRU, and the MAC layer performing logical channel multiplexing based on the indicator for each of the multiple streams. | 12-31-2009 |
| 20100008348 | UPLINK TTI BUNDLING WITH MEASUREMENT GAPS - A method and apparatus for wireless transmit receive unit (WTRU) to transmit a time transmission interval (TTI) bundle. The TTI bundle conflicts with a measurement gap, and the WTRU is configured to construct TTI bundle comprising a plurality of sub-frames, determine at least one of the plurality of sub-frames is in conflict with a measurement gap, determine a first of the plurality of sub-frames not in conflict with the measurement gap, associate the first of the plurality of sub-frames not in conflict with the measurement gap with a first redundancy version (RV), and transmit the first of the plurality of sub-frames in association with the first RV. | 01-14-2010 |
| 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 |
| 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 |
| 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 |
| 20100067457 | METHOD AND APPARATUS FOR SIGNALING THE RELEASE OF A PERSISTENT RESOURCE - A method and apparatus for signaling the release of a persistent resource in long term evolution (LTE) are disclosed. An indication of the release of a downlink (DL) persistent resource is received by a wireless transmit receive unit (WTRU) from an evolved Node-B (eNB) via a physical downlink control channel (PDCCH). A positive acknowledgement (ACK) is transmitted by the WTRU which denotes that the indication has been received. The PDCCH or a medium access control (MAC) CE may be used by the eNB to signal the indication. At least one bit may be added to contents of the PDCCH to signal whether the PDCCH is for DL persistent or dynamic resource allocation. The DL persistent resource is then released and an indication that the DL persistent resource has been released is transmitted. | 03-18-2010 |
| 20100074207 | METHOD FOR SIGNALING MU-MIMO PARAMETERS - Methods for signaling multi-user multiple-input multiple output (MU-MIMO) parameters for Evolved-UTRA (E-UTRA) are disclosed. Example signaling format methods are presented that allow use of distributed virtual resource blocks (DVRB) or support of four wireless transmit/receive units (WTRUs) but maintaining a predetermined signal format size. A signaling format is also presented that signals transmission precoding matrix indexes used by all co-scheduled WTRUs. | 03-25-2010 |
| 20100097937 | METHOD AND APPARATUS FOR WIRELESS TRANSMIT/RECEIVE UNIT SPECIFIC PILOT SIGNAL TRANSMISSION AND WIRELESS TRANSMIT/RECEIVE UNIT SPECIFIC PILOT SIGNAL POWER BOOSTING - A method and apparatus are described for providing improved channel estimation for wireless transmit/receive units (WTRUs) that require improved channel estimation (e.g., cell edge WTRUs) by allocating additional resource elements (REs) as pilot signals to improve channel estimation. These additional REs may be allocated to be used with expanded reference signals (ERSs). | 04-22-2010 |
| 20100098012 | UPLINK CONTROL INFORMATION TRANSMISSION METHODS FOR CARRIER AGGREGATION - A method and apparatus for transmitting uplink control information (UCI) for Long Term Evolution-Advanced (LTE-A) using carrier aggregation is disclosed. Methods for UCI transmission in the uplink control channel, uplink shared channel or uplink data channel are disclosed. The methods include transmitting channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), hybrid automatic repeat request (HARQ) acknowledgement/non-acknowledgement (ACK/NACK), channel status reports (CQI/PMI/RI), source routing (SR) and sounding reference signals (SRS). In addition, methods for providing flexible configuration in signaling UCI, efficient resource utilization, and support for high volume UCI overhead in LTE-A are disclosed. | 04-22-2010 |
| 20100098179 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING ORTHOGONAL FREQUENCY DIVISION MULTIPLEX-BASED TRANSMISSIONS - A method and apparatus for transmitting and receiving orthogonal frequency division multiplex (OFDM)-based transmissions are disclosed. Control information may be transmitted at least one symbol prior to the corresponding data symbols so that a wireless transmit/receive unit (WTRU) has time to determine which parts of the subcarriers need to be received without having to buffer any corresponding data symbols. Control information related to frequency location of the data may be received in the first subframe and control information not related to the frequency location of the data may be received in the second subframe that includes the corresponding data. The offset between the control information and the data may be a fixed value, may be received from the network, or may be included in the control information preceding the corresponding data. | 04-22-2010 |
| 20100113008 | METHOD AND APPARATUS FOR LTE RADIO LINK FAILURE DETERMINATION IN DRX MODE - A method and apparatus for detecting radio link failure (RLF) in a wireless transmit receive unit (WTRU) includes the WTRU performing a series of radio link measurements during a discontinuous reception (DRX) on-duration, comparing each of the series of radio link measurements to a threshold, and determining that the series of radio link measurements indicates an out-of-synch condition. | 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 |
| 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 |
| 20100118720 | METHOD AND APPARATUS FOR MONITORING AND PROCESSING COMPONENT CARRIERS - A method and apparatus are described which perform bandwidth aggregation by simultaneously monitoring and processing a number of simultaneous, non-contiguous or contiguous component carriers in the downlink. A wireless transmit/receive unit (WTRU) can be configured by an evolved Node-B (eNodeB) to support additional component carriers. A pre-configured additional component carrier may be used. Various methods for activating and deactivating the additional component carrier are also described. | 05-13-2010 |
| 20100130218 | METHOD AND APPARATUS FOR SUPPORTING AGGREGATION OF MULTIPLE COMPONENT CARRIERS - A method and apparatus for supporting aggregation of multiple component carriers are disclosed. A wireless transmit/receive unit (WTRU) in an idle state performs a cell search to detect a downlink anchor carrier and camps on the downlink anchor carrier. The downlink anchor carrier is a component carrier and may be assigned for synchronization and idle mode operations for the WTRU. The WTRU via the downlink anchor carrier receives a broadcast channel for a broadcast message, a paging channel for a paging message, and a control channel for control information necessary while in the idle state. The WTRU receives data via an aggregated carrier having at least two component carriers including a data carrier. The data carrier being a component carrier assigned for data transfer to the WTRU in a connected state. | 05-27-2010 |
| 20100158147 | UPLINK POWER HEADROOM REPORTING FOR CARRIER AGGREGATION - A method for reporting power headroom is disclosed. Power headroom may be reported across all carriers (wideband), for a specific carrier, or for a carrier group. The formula used to calculate the power headroom depends on whether the carrier (or a carrier in the carrier group) has a valid uplink grant. If the carrier or carrier group does not have a valid uplink grant, the power headroom may be calculated based on a reference grant. The power headroom is calculated by a wireless transmit/receive unit and is reported to an eNodeB. | 06-24-2010 |
| 20100189039 | DERIVATION OF LTE SYSTEM INFORMATION RETRANSMISSION REDUNDANCY VERSIONS - A method and apparatus for transmitting system information in an e Node B includes a processor configured to map system information to a plurality of subframes, determine that at least one of the plurality of subframes includes non-SI information, and assign a redundancy version to all of the plurality of subframes except the at least one subframe including non-SI information such that the redundancy versions are assigned in a particular pattern and the at least one subframe including non-SI information does not effect the particular pattern. | 07-29-2010 |
| 20100215011 | METHOD AND APPARATUS FOR SWITCHING A RESOURCE ASSIGNMENT MODE FOR A PLURALITY OF COMPONENT CARRIERS - Techniques for configuring and switching a resource assignment mode for a plurality of component carriers are disclosed. A wireless transmit/receive unit (WTRU) has a capability of supporting multiple resource assignment modes such that a resource assignment mode is configured for a plurality of component carriers that are allocated for the WTRU, and the WTRU attempts to decode a control channel based on the configured resource assignment mode. The resource assignment mode may be configured for the WTRU via higher layer signaling. The resource assignment mode may be specific to the WTRU, or specific to a component carrier or a group of component carriers. The resource assignment mode may be configured separately for a downlink component carrier and an uplink component carrier. The resource assignment mode includes a separate assignment mode with component carrier indication, a separate assignment mode without component carrier indication, or a joint assignment mode. | 08-26-2010 |
| 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 |
| 20100222060 | ANCHOR CARRIER RESELECTION AND CELL RESELECTION IN LONG TERM EVOLUTION-ADVANCED - A method and apparatus for performing anchor carrier reselection measurements and ranking in Long Term Evolution-Advanced are disclosed. The measurements are first determined by whether a non-serving anchor carrier has a higher reselection priority than a serving anchor carrier. Other non-serving anchor carrier measurements are started by checking the serving anchor measured results against non-serving anchor carrier measurement thresholds, including the parameter S-IntraCellSearch for measuring and ranking the intra-cell anchor carriers ahead of other non-serving anchor carriers. | 09-02-2010 |
| 20100227569 | CONTROL CHANNEL SIGNALING AND ACQUISITION FOR CARRIER AGGREGATION - A method and apparatus for handling a control channel for carrier aggregation in wireless communications. The method includes determining which component carrier to listen to, detecting the downlink control channel, processing mapping information related to downlink and uplink transmissions and operating discontinuous reception with respect to carrier aggregation. The method also includes detecting a component carrier, determining the component carrier type and locating the anchor component carrier, if necessary, where the anchor component carrier carries the carrier aggregation information. | 09-09-2010 |
| 20100234037 | METHOD AND APPARATUS FOR CARRIER ASSIGNMENT, CONFIGURATION AND SWITCHING FOR MULTICARRIER WIRELESS COMMUNICATIONS - As part of carrier assignment and configuration for multicarrier wireless communications, a single uplink (UL) primary carrier may provide control information for multiple concurrent downlink (DL) carriers. Optionally, control information for each DL carrier may be transmitted over paired UL carriers. Carrier switching of UL and/or DL carriers, including primary and anchor carriers, may occur during normal operation or during handover, and may occur in only the UL or only the DL direction. A unidirectional handover is performed when only an UL carrier or only a DL carrier is switched as part of a handover. Switching of UL and/or DL carriers may be from one component carrier or a subset of carriers to another component carrier, another subset of carriers, or all carriers in the same direction. | 09-16-2010 |
| 20100239040 | DATA AND CONTROL MULTIPLEXING FOR UPLINK MIMO WITH CARRIER AGGREGATION AND CLUSTERED-DFT - A method and apparatus for signal processing in a wireless transmit receive unit (WTRU), including generating a plurality of data bits and a plurality of control bits, mapping the data bits and control bits to one or more codewords, multiplexing the data bits and control bits, dividing the bits into layers, allocating control bits to each layer based on a channel quality of each codeword and a channel quality of each layer, and channel interleaving each layer for output to one or more antennas. | 09-23-2010 |
| 20100246561 | METHOD AND APPARATUS FOR POWER CONTROL OF SOUNDING REFERENCE SIGNAL (SRS) TRANSMISSION - Methods and apparatus for sounding reference signal (SRS) power control for a wireless transmitter/receiver unit (WTRU) are disclosed. These methods and apparatus include methods and apparatus for carrier-specific and carrier-common SRS power control in WTRUs that utilize carrier aggregation techniques. These methods and apparatus also include methods and apparatus for SRS power control in WTRUs utilizing both carrier aggregation and time division multiplexing (TDM) techniques. Additionally, these methods and apparatus include methods and apparatus for SRS power control for WTRUs utilizing multiple input multiple output MIMO operation. Methods and apparatus for SRS overhead reduction and power management in a WTRU are also disclosed. | 09-30-2010 |
| 20100246705 | METHOD AND APPARATUS FOR UPLINK POWER CONTROL IN MULTIPLE-INPUT MULTIPLE-OUTPUT - A method and apparatus for uplink power control in multiple-input multiple-output (MIMO) includes setting a transmit power level for a physical uplink shared channel (PUSCH) transmission. | 09-30-2010 |
| 20100254329 | UPLINK GRANT, DOWNLINK ASSIGNMENT AND SEARCH SPACE METHOD AND APPARATUS IN CARRIER AGGREGATION - Methods of mapping, indicating, encoding and transmitting uplink (UL) grants and downlink (DL) assignments for wireless communications for carrier aggregation are disclosed. Methods to encode and transmit DL assignments and UL grants and map and indicate the DL assignments to DL component carriers and UL grants to UL component carriers are described. Methods include specifying the mapping rules for DL component carriers that transmit DL assignment and DL component carriers that receive physical downlink shared channel (PDSCH), and mapping rules for DL component carriers that transmit UL grants and UL component carriers that transit physical uplink shared channel (PUSCH) when using separate coding/separate transmission schemes. | 10-07-2010 |
| 20100254351 | METHOD AND APPARATUS FOR PERFORMING A HANDOVER IN AN EVOLVED UNIVERSAL TERRESTRIAL RADIO ACCESS NETWORK - A method and an apparatus for performing a handover in an evolved universal terrestrial radio access network (E-UTRAN) are disclosed. A wireless transmit/receive unit (WTRU) sends a measurement report to a source evolved Node B (eNB), and receives a handover command from the source eNB. The WTRU initiates reception and processing of a primary broadcast channel (P-BCH) at the target cell after receiving the handover command. The WTRU then sends a random access preamble to the target eNB, receives a random access response from the target eNB, and sends a handover complete message to the target eNB. The reception and processing of the P-BCH may be initiated immediately after receiving the handover command or after sending the handover complete message. The WTRU may apply default configuration or source cell configuration in the target cell until a target cell SFN and/or P-BCH information are acquired. | 10-07-2010 |
| 20100272017 | METHOD AND APPARATUS FOR PROCESSING ADVANCED LONG TERM EVOLUTION SYSTEM INFORMATION - A method and apparatus for processing advanced long term evolution (LTE-A) system information (SI) are described. When a wireless transmit/receive unit (WTRU) is in an idle mode/state, an LTE-A SI broadcast may be received on at least one downlink (DL) anchor carrier, including a physical DL shared channel (PDSCH) having paging message content. At least one SI-change parameter included in the paging message content may be decoded and processed. The SI-change parameter may include a flag used to indicate an SI change on a logical partition, (a primary or a secondary SI broadcast group information change). When the WTRU is in a connected mode/state, an LTE-A SI-CHANGE-radio network temporary identifier (RNTI) transmission may be received during a modification period (MP), and an SI change may be performed during a subsequent MP. At least one SI-change parameter included in the SI-CHANGE-RNTI transmission may be decoded and processed. | 10-28-2010 |
| 20100273506 | REFERENCE SIGNALS FOR POSITIONING MEASUREMENTS - Methods and apparatus for supporting reference signals for positioning measurements are disclosed. Methods include subframe configuration, subframe structures, measurement opportunities using a set of downlink subframes which are not all consecutive, handling of subframes containing reference signals and system signals such as synchronization signals, paging occasions and Multicast Broadcast Multimedia Service (MBMS), and related control signaling between a long term evolution (LTE) network and a wireless transmit/receive unit (WTRU). Moreover, methods to resolve allocation conflicts arising between positioning reference signals and other reference signals are disclosed. | 10-28-2010 |
| 20100296467 | METHOD AND APPARATUS FOR RANDOM ACCESS IN MULTICARRIER WIRELESS COMMUNICATIONS - Methods and apparatus for random access in multicarrier wireless communications are disclosed. Methods and apparatus are provided for physical random access channel (PRACH) resource signaling, PRACH resource handling, preamble and PRACH resource selection, random access response (RAR) reception, preamble retransmission, and transmission and reception of subsequent messages. A method for maintaining an allowed multicarrier uplink (UL) random access channel (RACH) configuration set by adding an UL carrier to the allowed RACH configuration set provided that a triggering event occurs and performing a random access (RA) procedure using the allowed RACH configuration set. A method for sending data in multicarrier wireless communications by determining a set of available UL carriers and selecting an UL carrier from the set of available UL carriers. | 11-25-2010 |
| 20100303011 | METHOD AND APPARATUS FOR COMPONENT CARRIER AGGREGATION IN WIRELESS COMMUNICATIONS - A wireless transmit/receive unit (WTRU) receives a downlink subframe having multiple component carriers, each component carrier having control information encoded in a physical data control channel (PDCCH). The WTRU performs a blind decoding of control information in a first PDCCH located within a first component carrier to obtain a location of a second PDCCH located within a second component carrier, where the location of the second PDCCH is relative to a location of the first PDCCH as control channel element offset. The WTRU decodes the second PDCCH at the obtained location. | 12-02-2010 |
| 20100303039 | METHOD AND APPARATUS FOR PERFORMING COMPONENT CARRIER-SPECIFIC RECONFIGURATION - Techniques for component carrier-specific reconfiguration are disclosed. A wireless transmit/receive unit (WTRU) is capable of transmitting or receiving via multiple component carriers. The WTRU may perform component carrier reconfiguration on a component carrier basis to add, remove or replace a component carrier. Discontinuous reception (DRX) and/or discontinuous transmission (DTX) may be performed on at least one component carrier, wherein DRX and/or DTX patterns on the component carriers may not overlap each other. A random access procedure may be performed at the target cell on one component carrier while other component carriers are inactive. The component carrier-specific reconfiguration or handover of a component carrier or a channel may be implemented in coordinated multiple point transmission (CoMP), wherein a handover of a control channel, not a traffic channel, may be performed. Alternatively, a handover of a traffic channel may be performed. | 12-02-2010 |
| 20110002281 | DISCONTINUOUS RECEPTION FOR CARRIER AGGREGATION - Discontinuous reception (DRX) operations for wireless communications implementing carrier aggregation are disclosed. Physical downlink control channel implementation for carrier aggregation is also disclosed. DRX methods are disclosed including a common DRX protocol that may be applied across all component carriers, an individual/independent DRX protocol that is applied on each component carrier, and hybrid approaches that are applied across affected component carriers. Methods for addressing the effects of loss of synchronization on DRX, impact of scheduling request on DRX, uplink power control during DRX, and DRX operation in measurement gaps are disclosed. | 01-06-2011 |
| 20110019776 | METHOD AND APPARATUS FOR OBTAINING PORT INDEX INFORMATION - A method and apparatus are described for obtaining port index information. In one scenario, downlink (DL) control information (DCI) is received that includes new data indicator (NDI). The NDI has a value indicating an antenna port for single-port transmission. In response to receiving the DCI, a single-port transmission associated with the indicated antenna port is received. The NDI may be associated with a disabled codeword and the DCI may include a second NDI. The DCI may be received over a physical downlink control channel (PDCCH). The DCI may include a resource block (RB) assignment information field (IF), a hybrid automatic repeat request (HARQ) process identity (ID) IF, a transmit power control (TPC) IF and, for each of a plurality of transport blocks, a modulation and coding scheme (MCS), an NDI and a redundancy version (RV). | 01-27-2011 |
| 20110038271 | APPARATUS AND METHOD FOR UPLINK POWER CONTROL FOR A WIRELESS TRANSMITTER/RECEIVER UNIT UTILIZING MULTIPLE CARRIERS - A method and apparatus for determining uplink power in a wireless transmit receive unit (WTRU). The WTRU operates in a carrier aggregated system. The WTRU is configured to receive a plurality of uplink power parameters indexed to one of a plurality of uplink carriers and receive a transmit power control command indexed to the one of the plurality of uplink carriers. The WTRU is configured to determine a pathloss of the one of the plurality of uplink carriers and determine a transmit power for the one of the plurality of uplink carriers based on the plurality of power parameters, the transmit power control command, and the pathloss. | 02-17-2011 |
| 20110039568 | METHOD AND APPARATUS FOR CONTENTION-BASED UPLINK DATA TRANSMISSION - A method and apparatus for a wireless transmit receive unit (WTRU) to use a contention-based uplink communications channel, applies a rule-based restriction of access to the contention-based uplink channel that attempts to use at least one contention-free uplink channel allocation for uplink transmissions on a condition that at least one contention-free uplink channel allocation has been granted. | 02-17-2011 |
| 20110059718 | EMERGENCY INFORMATION IN SYSTEM INFORMATION BROADCAST - A method and apparatus for providing an emergency signal to a wireless transmit receive unit (WTRU). The WTRU is configured to receive a system information message including an emergency message notification and emergency system information messages, wherein the system information messages are segmented and overlap non-emergency system information messages. The WTRU is further configured to process he emergency information messages. | 03-10-2011 |
| 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 |
| 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 |
| 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 |
