Patent application number | Description | Published |
20080274753 | POSITION LOCATION FOR WIRELESS COMMUNICATION SYSTEMS - The subject matter disclosed herein relates to position location in a wireless communication system, and may more particularly relate to position location for a mobile station. | 11-06-2008 |
20090010224 | CHANNEL DEPENDENT CREDIT ACCUMULATION FOR MOBILE HANDOVER - Channel dependent credit accumulation for determining a mobile handover is provided herein. In some aspects, a characteristic(s) of a source channel(s) serving a mobile device and of one or more target channels can be evaluated. Magnitudes of the evaluated characteristics can be utilized to generate handover credits associated with the target channel(s) (e.g., based on some function of a difference in the magnitudes). If a concurrent number of credits associated with a target channel equals or rises above one or more threshold levels, a mobile device can initiate a handover. As described, disparity in source and target channel quality, signal strength, etc., can be determined to increase probability of a handover based on channel degradation over one or more time intervals. | 01-08-2009 |
20090022107 | COMPRESSION STATIC AND SEMI-STATIC CONTEXT TRANSFER - Systems, methodologies, and devices are described that facilitate transferring a subset of compression context from a source base station to a target base station during an inter-base station handover of a mobile device to facilitate establishment of compression context between the mobile device and target base station. The source base station can transfer a subset of compression context comprising static and semi-static context to the target base station during inter-base station handover to at least partially establish compression context between the mobile device and target base station prior to or during handover. The source base station can transmit, to the mobile device, indicator information related to compression context transferred. The target base station can at least partially establish compression context based on received subset of compression context to facilitate efficient communication with the mobile device and can establish any remaining portion of compression context with the mobile device after handover. | 01-22-2009 |
20090023448 | METHOD AND APPARATUS FOR INTER-SYSTEM HANDOVER - An inter-system handover system for a wireless communication system supports hand-down and hand-up of user equipment (UE) to different radio access technologies, including synchronous and asynchronous systems. Latency and handover connection failures are reduced by an access node (nodeB) broadcasting information about neighboring systems (targets) when the UE reception (RX) capability is both inside or outside the reception range of the target. A single RX chain is sufficient, although transitioning between a wireless wide area network (WWAN) to a wireless local area network may (WLAN) may advantageously benefit from simultaneous operation on two Rx chains. Optimized list of neighboring RAT systems (targets) are broadcast from the network, including measurement parameters and reporting instructions. Thereby, UE-driven reporting minimizes latencies. UE reports other-system searches to network only if needed for a handover. In addition, handover requests can be bundled with other-system measurement information, if necessary, for additional efficiencies. | 01-22-2009 |
20090028112 | HANDOVER MECHANISM THAT EXPLOITS UPLINK CHANNEL QUALITY OF A TARGET CELL - System(s) and method(s) are provided for handover of a mobile terminal in a wireless communication system. Handoff resolution relies on both a downlink channel quality indication between a serving base station and the mobile terminal,, and uplink channel quality indications amongst the terminal and a measurement set of target base stations. To generate UL channel quality indicators, the mobile station conveys a narrowband or broadband, sounding reference signal, and serving and target base stations measure UL and DL performance metrics (e.g., RSRP, RSSI, or RSOT). In backward handover, UL channel state information from target cells is received at the serving base station through backhaul communication, and handoff is resolved based on both UL and DL quality reports. In forward handover, the set of UL quality reports are conveyed to the mobile station to determine a target cell for handoff. | 01-29-2009 |
20090040982 | Handover In A Wireless Data Packet Communication System That Avoid User Data Loss - An apparatus, method, processor(s), and computer program product avoids user data loss by network-controlled, user equipment assisted handover in a wireless data packet communication system. A wireless receiver receives radio link control (RLC) packet data units (PDUs) from user equipment (UE) being served by a source node. A wireless transmitter commands the UE to handover. A network communication interface transmits RLC Uplink (UL) context from the source node to the target node, and transmits RLC Downlink (DL) initialization message and buffered in-transit DL RLC PDUs from the source node to the target node. | 02-12-2009 |
20090041247 | KEY IDENTIFIER IN PACKET DATA CONVERGENCE PROTOCOL HEADER - Systems and methodologies are described that facilitate identifying a plurality of keysets utilized in a communications network. The keysets can include ciphering keys that provide data encryption and decryption and integrity keys that provide data integrity protection. A key identifier can be included in a packet data convergence protocol header that indicates a keyset employed in connection with data in a protocol data unit. In addition, a route indicator can be provided in a radio link control header that distinguishes a source cell and a target cell in networks configured without RLC reset. | 02-12-2009 |
20090124259 | LAYER 2 TUNNELING OF DATA DURING HANDOVER IN A WIRELESS COMMUNICATION SYSTEM - Techniques for sending data during handover with Layer 2 tunneling are described. In one design, a user equipment (UE) sends first Layer 2 packets to a source base station prior to handover to a target base station. The UE sends at least one second Layer 2 packet to the target base station, which identifies the second Layer 2 packet(s) as being intended for the source base station and thus forwards the second Layer 2 packet(s) to the source base station via a Layer 2 tunnel. The UE sends third Layer 2 packets to the target base station after the handover. The target base station processes the third Layer 2 packets to obtain IP packets and sends the IP packets to a serving gateway after a trigger condition, which may be defined to achieve in-order delivery of IP packets from the source and target base stations to the serving gateway. | 05-14-2009 |
20090196196 | CARRIER MANAGEMENT IN A WIRELESS COMMUNICATION DEVICE ASSIGNED A SET OF TWO OR MORE CARRIERS BY A WIRELESS COMMUNICATION NETWORK - Carrier management in a wireless communication device assigned a set of two or more carriers by a wireless communication network is disclosed. In one aspect, a method of carrier management includes transmitting data over the wireless communication network on one or more carriers forming a subset of active carriers from the set of carriers assigned to the wireless communication device. A first performance metric is determined indicative of operating conditions across the set of carriers assigned to the wireless communication device. A desired number of carriers on which to transmit data based on the first performance metric is determined. The desired number of carriers on which to transmit data is compared with the number of carriers in the subset of active carriers. The subset of active carriers is dynamically adjusted based on the comparison and subsequent data is transmitted over the wireless communication network using the adjusted subset of active carriers. | 08-06-2009 |
20090197632 | ALLOCATING TRANSMIT POWER AMONG TWO OR MORE CARRIERS ASSIGNED TO A WIRELESS COMMUNICATION DEVICE - Allocating transmit power among two or more carriers assigned to a wireless communication device is disclosed. In one aspect, a method of allocating transmit power includes determining a total amount of data transmit power available at the wireless communication device for data transmission over the carriers. An efficiency metric is determined for each carrier based on the carrier's transmission characteristics and a portion of the total data transmit power is allocated to each carrier based on each carrier's efficiency metric. | 08-06-2009 |
20090232052 | FRAME TERMINATION - Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided. In an exemplary embodiment, a base station (BS) transmits power control groups (PCG's) for a frame over a forward link (FL) to a mobile station (MS) until accurate reception of the frame is acknowledged by the MS over a reverse link (RL), possibly before all PCG's of the frame are received over the FL. Possible ACK signaling methods are defined for channels associated with a cdma2000 wireless communications system. In another exemplary embodiment, techniques for reverse link early termination are also provided. | 09-17-2009 |
20100014487 | METHOD AND SYSTEM FOR A DATA TRANSMISSION IN A COMMUNICATION SYSTEM - A method and apparatus for transmitting user data from access terminals, including receiving at each of a first subset of the access terminals a scheduling decision for an interval, the interval having a first portion and a second portion, the first portion including overhead channels; selecting at each access terminal of the first subset a mode for data multiplexing, wherein a first mode comprises building user data into the first portion of the interval using the multiplexing format; a second mode comprises building user data into at least one sub-division of the second portion of the interval, wherein each of the at least one sub-division is associated with the multiplexing format; and a third mode comprises building user data into the interval combining the first mode and the second mode; and transmitting the user data using the selected mode of data multiplexing in accordance with the scheduling decision. | 01-21-2010 |
20100056061 | POWER SPECTRUM DENSITY CONTROL FOR WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate adjusting power spectrum density (PSD) for wireless devices according to multiple possible step sizes. A step size for an adjustment can be selected based at least in part on a received overload indicator from one or more access points, a PSD required to achieve a target signal-to-interference-and-noise ratio (SINR) for a wireless device, and a PSD previously assigned to the wireless device. Once the step size is selected, it can be applied to the previous PSD to generate a new PSD for the wireless device, and the wireless device can accordingly adjust PSD to mitigate inter-cell interference with the one or more access points. | 03-04-2010 |
20100056153 | CONTROL OF ACCESS TERMINAL OPERATION BASED ON INTERFERENCE INFORMATION - Systems and methodologies are described that facilitate distributing and utilizing interference information in a wireless communication environment. Interference information can be generated by a base station by evaluating uplink conditions, and disparate interference information can be collected from neighbor base station(s). Interference information associated with the base station and the neighbor base station(s) can be transmitted by the base station to access terminal(s). An access terminal that receives that interference information associated with the base station and the neighbor base station(s) can control an operation based at least in part upon the interference information. For example, the access terminal can adjust a transmit power, select a target serving base station for handover, and/or choose a random access channel (RACH) resource to use for random access as a function of the interference information associated with the base station and the neighbor base station(s). | 03-04-2010 |
20100056197 | POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM - In a wireless communications system, a serving base station performs outer and closed power control for an overhead channel and a traffic channel for data, either of which can carry an acknowledgement (Ack) channel and Channel Quality Indicator (CQI) channel on an uplink from User Equipment (UE). In an exemplary aspect, data packet communication is implemented in 3GPP LTE Rel. 8 wherein the uplink has a Single Carrier Frequency Division Multiplex (SC-FDM) uplink waveform. The UE performs open loop power control by a determining transmit power spectral density value by using received energy per symbol for a reference signal. | 03-04-2010 |
20100067480 | SYSTEMS AND METHODS EMPLOYING MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) TECHNIQUES - A system has multiple antennas, a Time Division Multiplexing (TDM) module creating TDM slots, and demultiplexing circuitry inserting within the TDM slots Orthogonal Frequency Division Multiplexing (OFDM) symbols and associating the TDM slots with data sub-streams. The system also includes precoding circuitry associating the data sub-streams with multiple tones. Each of the respective tones corresponds to a respective one of the antennas. The antennas transmit the data sub-streams using the multiple tones. | 03-18-2010 |
20100103877 | SYSTEMS AND METHODS PROVIDING MOBILE TRANSMIT DIVERSITY - A method for use by a remote unit in an Evolution Data Optimized (EVDO) network includes sending transmissions to a base station, each of the transmissions corresponding to a respective one of multiple hypotheses of multiple antenna usage. The method also includes receiving feedback from the base station in response to the transmissions, the feedback being uninformed of multiple antenna usage and using the feedback to select at least one of the hypotheses. The method further includes transmitting data using a multiple-antenna scheme associated with the selected hypotheses. | 04-29-2010 |
20100103904 | ENHANCED FORWARD LINK TRANSMISSION - A method for processing forward link channel signals generated by a CDMA base station includes time sharing by several mobile stations of spreading codes, which are orthogonal codes such as Walsh Code, and code-combining soft/softer handoff across sectors in the mobile station active set to increase dimensions on the CDMA2000 and WCDMA downlink while minimizing intra-sector interference. Since different parts of a packet or frame are transmitted to the user by the different base stations in the active set, earlier decoding and therefore early packet termination is enabled. | 04-29-2010 |
20100105336 | ACTIVE SET MANAGEMENT WITH HOTSPOT CARRIERS - Techniques for managing communications in a cellular network are disclosed. The cellular network can include one or more sectors in which hotspot carriers are deployed. The hotspot carriers can be available to mobile devices beyond sector boundaries defined by the signal strength of ubiquitous carriers. A mobile device can measure a signal strength of a candidate hotspot carrier and estimate a reverse link mobile device transmit power level for communicating on the hotspot carrier. The mobile device may determine whether to add, remove, or maintain the hotspot carrier in its active set based on the estimated transmit power level so as to limit interference to the reverse link of non-hotspot sectors. | 04-29-2010 |
20100105380 | METHOD AND APPARATUS FOR BROADCASTING SYSTEM INFORMATION IN A WIRELESS COMMUNICATION NETWORK - Techniques for broadcasting system information in a wireless communication network are described. A cell may support one or more public land mobile networks (PLMNs). The cell may send a PLMN table in a first message on a broadcast channel and may send at least one index to the PLMN table in a second message on the broadcast channel. The PLMN table may include entries for different possible PLMNs or different possible combinations of PLMNs. A UE may receive the first message from a serving cell and may receive the second message from a candidate cell for cell reselection. The UE may obtain the PLMN table from the first message and may obtain at least one index to the PLMN table from the second message. The UE may determine whether the second cell is accessible by the UE based on the PLMN table and the at least one index. | 04-29-2010 |
20100105422 | METHOD AND APPARATUS FOR IMBALANCE COMPENSATION IN WIRELESS NETWORKS - An apparatus including a processing system configured to determine an imbalance indicator from each sector in an active set; and boost overhead power based on the imbalance indicator from each of the sectors. A method for performing the process is also disclosed herein. | 04-29-2010 |
20100111152 | METHOD AND APPARATUS FOR DETERMINING AN OUTAGE IN COMMUNICATION SYSTEMS - A method of detecting an outage includes determining at a source of data a quality metric of a link over which data is to be transmitted, modifying the quality metric by a quality metric margin, and declaring an outage event when power required for transmission of a reference signal exceeds power required for transmission of the reference signal determined form the modified quality metric. An apparatus for detecting an outage includes means for determining at a source of data a quality metric of a link over which data is to be transmitted, means for modifying the quality metric by a quality metric margin, means for determining a maximum rate of data in accordance with said modified quality metric, and means for declaring an outage event when power required for transmission of data at the maximum rate of data exceeds maximum allowable transmission power. | 05-06-2010 |
20100135213 | APPARATUS AND METHOD FOR CONTROLLING REVERSE LINK INTERFERENCE AMONG ACCESS TERMINALS IN WIRELESS COMMUNICATIONS - In a wireless communication system, an apparatus and a method are provided for controlling reverse link interference among access terminals that are power controlled by a sector of a base station. In an embodiment, the maximum effective noise power spectral density is used as a parameter for controlling the level of reverse link loading, by setting a reverse activity bit (RAB) to signal the access terminals to reduce their data rates in order to minimize interference between the access terminals if the maximum effective noise power spectral density is above a predetermined threshold. | 06-03-2010 |
20100136998 | ADAPTIVE SEMI-STATIC INTERFERENCE AVOIDANCE IN CELLULAR NETWORKS - Techniques for the reuse of airlink resources in a cellular network are disclosed. A base station controller may gather information about load levels at adjacent sectors of the cellular network. The base station controller may generate and distribute a reuse reference to base stations serving mobile devices in the adjacent sectors. Alternatively, the base station controller may provide the load level information to base stations serving the adjacent sectors and the base stations may determine a sector reuse pattern. The reuse reference or reuse pattern may be adapted to sector load conditions and may designate any combination of carriers, time slots, and power levels for data transmission in a sector. The base stations may schedule data transmission to mobile devices in their respective sectors according to the reuse reference or reuse pattern. The base stations may modify their resource usage in response to changes in sector load. | 06-03-2010 |
20100165845 | WIRELESS NETWORK RESOURCE ADAPTATION - A method of regulating data flow in a wireless communication network includes: collecting data regarding dynamic loading of sector-carrier pairs (pilots) in communication sectors of the wireless communication network; obtaining data rates for data flows of the pilots to access terminals within the wireless communication network; determining one or more pilots to use for conveying data in the wireless communication network based on the data rates and the dynamic loading; and altering data flow over the pilots by at least one of changing a data rate over at least one of the pilots or changing a combination of pilots used by the wireless communication network for conveying data to increase total data flow. | 07-01-2010 |
20100165922 | DISCONTINUOUS TRANSMISSION IN A WIRELESS NETWORK - A communication system for use in a wireless network includes: an audio module configured to provide packets indicative of audio for a part of a communication between the communication system and another communication system, the communication spanning packet times, the packets including at least critical packets indicative of critical audio; and a transceiver coupled to the audio module and configured to cause: the critical packets to be conveyed for transmission; and first non-critical packets, indicative of non-critical audio, to be conveyed for transmission such that (1) the first non-critical packets represent less than all of a time between transmission of critical packets and (2) no more than a threshold number of packet times will pass without one of the critical packets or one of the first non-critical packets being conveyed by the transceiver for transmission. | 07-01-2010 |
20100167780 | LOAD-ADAPTIVE UPLINK TRANSMIT POWER - An access terminal of a wireless communication system includes: an antenna; a transceiver; a load level monitor communicatively coupled to the transceiver and configured to receive, from the transceiver via the antenna, and analyze indications of reverse link wireless network traffic load over a period of time in a region of the wireless network containing the access terminal; a load level module configured to combine the indications over the period of time to determine a load level associated with the access terminal; and a transmission module configured to cause the transceiver to change from transmitting data packets in accordance with a first value of a transmission characteristic to transmitting data packets in accordance with a second value of the transmission characteristic in response to the load level being below a first load threshold value. | 07-01-2010 |
20100265883 | METHOD AND APPARATUS FOR INTER-SECTOR MIMO CROSS-REFERENCE TO RELATED APPLICATIONS - An apparatus for wireless communication is disclosed that includes a processing system configured to communicate with a plurality of sectors in an active set; and receive independent data streams from the plurality of sectors on the same carrier. A method for performing the process is also disclosed herein. | 10-21-2010 |
20100291917 | SYSTEM AND METHOD FOR SUPPORTING MULTIPLE REVERSE LINK DATA STREAMS - Techniques for rank adaptation and multiple-stream reverse link communications in a wireless access network are disclosed. A remote unit transmits one or more reverse link data streams using separate identifiers to a base station. The number of reverse link data streams may be determined according to feedback from the base station or it may be determined by testing one or more multiple-antenna transmit hypotheses. The base station may estimate channel conditions using information obtained from the one or more reverse link data streams and may determine a spatial rank of the communication channel. The remote unit may perform separate error control and power control processes for each reverse link data stream in cooperation with the base station. | 11-18-2010 |
20100316024 | SUPERPOSITION CODING IN A WIRELESS COMMUNICATION SYSTEM - The present patent application comprises a method and apparatus to compile a superposition coded packet by compiling user candidates for superposition coding, ranking the user candidates based on a result of an evaluation function, selecting a deserving user candidate from among the user candidates, and compiling a superposition coded packet by adding other user data packets to a packet of the deserving user data packet, wherein the data packets for the user candidates may conform to a plurality of different formats and wireless communication standards. | 12-16-2010 |
20110206009 | METHOD AND APPARATUS FOR INTER-SYSTEM HANDOVER - An inter-system handover system for a wireless communication system supports hand-down and hand-up of user equipment (UE) to different radio access technologies, including synchronous and asynchronous systems. Latency and handover connection failures are reduced by an access node (nodeB) broadcasting information about neighboring systems (targets) when the UE reception (RX) capability is both inside or outside the reception range of the target. A single RX chain is sufficient, although transitioning between a wireless wide area network (WWAN) to a wireless local area network may (WLAN) may advantageously benefit from simultaneous operation on two Rx chains. Optimized list of neighboring RAT systems (targets) are broadcast from the network, including measurement parameters and reporting instructions. Thereby, UE-driven reporting minimizes latencies. UE reports other-system searches to network only if needed for a handover. In addition, handover requests can be bundled with other-system measurement information, if necessary, for additional efficiencies. | 08-25-2011 |
20110211561 | SUPERPOSITION CODING IN A WIRELESS COMMUNICATION SYSTEM - The present patent application comprises a method and apparatus to compile a superposition coded packet by compiling user candidates for superposition coding, ranking the user candidates based on a result of an evaluation function, selecting a deserving user candidate from among the user candidates, and compiling a superposition coded packet by adding other user data packets to a packet of the deserving user data packet, wherein the data packets for the user candidates may conform to a plurality of different formats and wireless communication standards. | 09-01-2011 |
20110275380 | SYSTEMS, METHODS, AND COMPUTER PROGRAM PRODUCTS FOR COMPENSATING FOR INTERFERENCE IN SECTOR TRANSMISSIONS - A method for interference cancellation in a device that receives transmissions from multiple sources is disclosed. The method includes receiving multiple slots, each including a pilot segment and a traffic segment. A first one of the slots includes information indicating an activity level of a traffic segment of the first one of the slots. The method also includes calculating a value associated with interference among the plurality of slots, utilizing the information indicating the activity level to account for an amount of interference attributable to the first one of the slots. Furthermore, channel conditions are estimated for a second one of the slots using the value associated with the amount of interference. The method also includes processing the second one of the slots according to the estimated channel conditions. | 11-10-2011 |
20120020209 | LOAD BALANCING - A method of communicating in a wireless network including receiving effective load values for sectors accessible to an access terminal of the wireless network. The effective load values represent effective loads on the sectors. The method also includes receiving pilot signal channel quality values of the sectors and selecting a serving sector, for the access terminal based on the effective load values and the pilot signal channel quality values. | 01-26-2012 |
20120287815 | DATA DRIVEN ADAPTIVE RECEIVE CHAIN DIVERSITY PROCESSING - Methods, systems, and devices are described for receive chain diversity processing in a mobile wireless device. When data is not being received at the mobile device, the diversity receive chain(s) may be disabled in order to reduce power consumed at the mobile device. The diversity receive chain(s) may be enabled/disabled according to one or more different algorithms based on idle time from the receipt and/or transmission of data. The amount of idle time that triggers the disabling of a diversity receive chain may be adaptive based on historical usage of the mobile device, or based on activity on the transmit chain of the mobile device. | 11-15-2012 |
20130016684 | POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM - In a wireless communications system, a serving base station performs outer and closed power control for an overhead channel and a traffic channel for data, either of which can carry an acknowledgement (Ack) channel and Channel Quality Indicator (CQI) channel on an uplink from User Equipment (UE). In an exemplary aspect, data packet communication is implemented in 3GPP LTE Rel. 8 wherein the uplink has a Single Carrier Frequency Division Multiplex (SC-FDM) uplink waveform. The UE performs open loop power control by a determining transmit power spectral density value by using received energy per symbol for a reference signal. | 01-17-2013 |
20130044599 | REVERSE LINK CONTROL TO REDUCE FORWARD LINK LATENCY - Some implementations provide a method for prioritizing reverse link packets so that particular reverse link packets are transmitted with a reduced latency in order to improve spectral efficiency of the forward link. The method also optionally includes weighting packets according to their determined lengths, and transmitting packets based on the determined weights. In one implementation, the method includes sorting packets at least according to one of size, type and nature of the data in the packets. Accordingly, sorting of the packets includes at least one of determining the size and the type of each packet. In one implementation, sorting the packets includes deep-packet inspection to determine a respective priority value for each packet. | 02-21-2013 |
20130064179 | MANAGEMENT OF TCP/IP MESSAGING IN WIRELESS NETWORKS - Some implementations of the present invention provide mechanisms for gating the transmission of FIN and other short overhead messages of the like in order to improve spectral efficiency. In some implementations spectral efficiency is improved by reducing the number of air-link connections established to merely transmit FIN and other short overhead messages of the like. In one implementation FIN messages are buffered in a queue and transmitted when an air-link connection is established to transmit higher value messages. In one implementation FIN messages are buffered and transmitted when the contents of the buffer breach a threshold that justifies the establishment of an air-link connection to transmit the contents of the buffer. | 03-14-2013 |
20130065610 | Position Location for Wireless Communication Systems - The subject matter disclosed herein relates to position location in a wireless communication system, and may more particularly relate to position location for a mobile station. | 03-14-2013 |
20130083827 | Apparatus and method for selection of a set of cells for interference cancellation in a wireless communication system - Apparatus and methods are disclosed for generating and managing a set of sectors, the signals received from which are utilized to generate an interference estimate for use by an interference cancellation circuit. The set of sectors generally includes a subset of the combined set of sectors in the Active Set and the Candidate Set for an access terminal. A finger of a receiver at an access terminal can be assigned to each sector in the set of sectors for interference cancellation to improve receiver operations. Other aspects, embodiments, and features are also claimed and described. | 04-04-2013 |
20130094425 | APPARATUSES AND METHODS FOR FACILITATING SIMULCASTING AND DE-SIMULCASTING WITH A PLURALITY OF BASE STATIONS - Base station simulcast controller module apparatuses are adapted to send a message to the base station controller to direct the base station controller to send downlink packets across each of the plurality of base stations for simulcast with a common sector identity (ID). One or more simulcasting control instructions may be sent to the plurality of base stations to facilitate simulcasting with the sector ID from the plurality of base stations. Methods for facilitating simulcasting and de-simulcasting at a plurality of base stations include sending a message to a base station controller to direct the base station controller to send downlink packets across each of a plurality of base stations for simulcast with a common sector identity (ID). One or more simulcasting control instructions are also sent to the plurality of base stations to facilitate simulcasting with the sector ID from the plurality of base stations. | 04-18-2013 |
20130094454 | APPARATUS AND METHODS FOR FACILITATING SIMULCASTING AND DE-SIMULCASTING IN A DISTRIBUTED ANTENNA SYSTEM - An RF connection matrix may include first and second carrier-specific RF connection matrix modules. The first carrier-specific RF connection matrix module can be adapted to route a first downlink transmission to one or more remote antenna units for transmission on a first carrier. The second carrier-specific RF connection matrix module can be adapted to route a second downlink transmission to one or more remote antenna units for transmission on a second carrier. Methods for facilitating simulcasting and de-simulcasting may include receiving a signal associated with a sector ID, which signal includes a first downlink transmission for a first carrier and a second downlink transmission for a second carrier. The first downlink transmission can be routed to one or more remote antenna units for transmission on the first carrier. The second downlink transmission can be routed to one or more remote antenna units for transmission on the second carrier. | 04-18-2013 |
20130095871 | BASE STATIONS AND METHODS FOR FACILITATING DYNAMIC SIMULCASTING AND DE-SIMULCASTING IN A DISTRIBUTED ANTENNA SYSTEM - Base stations may include a plurality of antenna ports adapted to communicatively couple to respective remote antenna units. A base station simulcast controller module may be coupled with each antenna port, and may be adapted to transmit downlink transmissions over a plurality of remote antenna units, with two or more of the remote antenna units simulcasting downlink transmissions as a simulcasting group. In response to one or more obtained network traffic parameters, the base station simulcast controller module may modify the simulcasting group to include at least one different remote antenna unit. Methods operational on base station may include transmitting downlink transmissions over a plurality of remote antenna units, where two or more of the remote antenna units form a simulcasting group. The simulcasting group can be modified to include at least one different remote antenna unit in response to one or more obtained network traffic parameters. | 04-18-2013 |
20130095873 | DISTRIBUTED ANTENNA SYSTEMS AND METHODS OF WIRELESS COMMUNICATIONS FOR FACILITATING SIMULCASTING AND DE-SIMULCASTING OF DOWNLINK TRANSMISSIONS - Distributed antenna systems (DASs) can include a plurality of spatially separated remote antenna units. According to at least one example, a first group of remote antenna units can simulcast downlink transmissions on a first carrier with a particular sector identity (ID). A second group of remote antenna units, including at least one different remote antenna unit from the first group, can simulcast downlink transmissions on a second carrier with the same sector ID. According to at least one other example, two or more remote antenna units which include respective coverage areas that are non-adjacent to one another can be employed to simulcast downlink transmissions. | 04-18-2013 |
20130107780 | APPARATUS AND METHOD FOR ADAPTIVELY ENABLING DISCONTINUOUS TRANSMISSION (DTX) IN A WIRELESS COMMUNICATION SYSTEM | 05-02-2013 |
20130107803 | METHODS AND DEVICES FOR FACILITATING ACCESS TERMINAL REGISTRATIONS | 05-02-2013 |
20130109382 | METHODS AND DEVICES FOR FACILITATING ACCESS TERMINAL REGISTRATIONS | 05-02-2013 |
20130176942 | DEVICES AND METHODS FOR FACILITATING OVERHEAD MESSAGE UPDATES IN WIRELESS COMMUNICATIONS SYSTEMS - Access terminals are adapted to facilitate reception of overhead messages. According to one example, an access terminal can determine whether it is at least substantially stationary. The access terminal may receive one or more sequence numbers corresponding to a subsequent overhead message. In response to being at least substantially stationary, the access terminal can ignore the subsequent overhead message when the corresponding sequence numbers are the same as stored sequence numbers corresponding to a previously obtained overhead message, even when the previously obtained overhead message is more than six hundred seconds old. According to another example, a network node may transmit an overhead message including a corresponding sector indicator and sequence numbers. When the sector indicator and the sequence numbers are the same as a previously received and stored sector indicator and sequence numbers, the access terminal can ignore the overhead message. Other aspects, embodiments, and features are also included. | 07-11-2013 |
20130201893 | DEVICES AND METHODS FOR MANAGING DISCONTINUOUS TRANSMISSION AT A WIRELESS ACCESS TERMINAL - Access terminals are adapted to facilitate discontinuous transmission (DTX). According to one example, an access terminal determines to disable DTX, such that a continuous reverse link transmission may occur, in a fashion such as not to interfere with the operation of a Frame Early Termination operation utilized in CDMA 1x technology. As one example, the access terminal may cease the utilization of DTX in accordance with a performance metric of a wireless communication network. The performance metric may be a forward link power control setpoint of a base station, a number of quasi-orthogonal function sets being utilized at the base station, a number of frame erasures corresponding to a forward link transmission from the base station, or any other suitable measurable parameter of the network performance. Other aspects, embodiments, and features are also claimed and described. | 08-08-2013 |
20130201935 | APPARATUS AND METHOD OF CHANNEL SETUP - Apparatus and methods are described herein for setting up a communication channel. A mobile station may send a message to a base station to setup a traffic channel. In response, the mobile station may receive a single message from the base station including channel assignment parameters and service option configurations. The mobile station may use the information from the single message to establish the traffic channel. Other aspects, embodiments, and features are also claimed and described. | 08-08-2013 |
20130203344 | DEVICES AND METHODS FOR FACILITATING EXTENDED TIME PERIODS FOR MAINTAINING PPP SESSIONS - Access terminals are adapted to facilitate extended time periods for maintaining PPP sessions. According to one example, an access terminal can communicate with a network entity to establish a PPP session maintained by an extended time period. The extended time frame can be different (e.g., greater or less) than a default time period for maintaining the PPP session. For instance, the access terminal may establish a PPP session including a PPP connection. The access terminal may also send a persistence indicator to the network entity to cause setting the extended time period for maintaining the PPP session. The network entity may receive the persistence indicator and accordingly employ a differing time period (e.g., an extended time period) for maintaining the PPP session. Other aspects, embodiments, and features are also included. | 08-08-2013 |
20130203449 | APPARATUS AND METHOD FOR REDUCING PAGING CHANNEL LOAD IN A WIRELESS NETWORK - Apparatus and methods are described herein for monitoring multiple paging channels at a mobile station. A mobile station may monitor a primary paging channel and an optimized secondary paging channel to receive signals from a base station. The mobile station may process overhead data messages received in signals over the primary paging channel. The mobile station may process any mobile-station specific messages received in signals over the optimized secondary paging channel. Other aspects, embodiments, and features are also claimed and described. | 08-08-2013 |
20130229961 | METHODS AND DEVICES FOR POSITIONING AN ACCESS TERMINAL UTILIZING A HIGHLY DETECTABLE PILOT - Apparatus and methods are disclosed for positioning an access terminal in a CDMA wireless communication network utilizing a highly detectable pilot (HDP) scheme. Here, transmissions by base stations are divided in the time dimension into a plurality of time slots, or pilot control groups (PCGs). A subset of these time slots, according to a duty cycle, are exclusively allocated to the transmission of the HDP signals, while conventional data, control, and pilot transmissions are forgone during these HDP time slots. Among the HDP time slots, in accordance with a re-use pattern, groups of the cells take turns transmitting the HDPs at full base station power. In this way, access terminals are better capable of receiving a greater set of pilot signals for utilization in trilateration of the access terminals. Other aspects, embodiments, and features are also claimed and described. | 09-05-2013 |
20130242772 | METHOD AND APPARATUS FOR ADAPTIVE RECEIVE DIVERSITY CONTROL FOR POWER REDUCTION - Methods and devices performing the method for wireless communications are disclosed, where the method includes retrieving historical communications information for a plurality of receive chains for receiving communications from a wireless node; determining a number of receive chains from the plurality of receive chains to enable in a discontinuous reception mode based on the historical communications information; and enabling the number of receive chains to receive a communication from the wireless node in a communications cycle. Other aspects, embodiments, and features are also claimed and described. | 09-19-2013 |
20130250827 | DEVICES AND METHODS FOR MODIFYING PERFORMANCE ATTRIBUTES BASED ON DEVICE CAPABILITIES - Access terminals are adapted to identify one or more capabilities (e.g., characteristics, features). Such an access terminal can send a capability indication message to a network node. The capability indication message is adapted to identify at least one capability associated with the access terminal. The network node can receive the capability indication message and can identify one or more performance attributes associated with each identified capability of the access terminal, which performance attributes can be beneficially altered or optimized in light of the identified capabilities. The network node and the access terminal can then employ one or more adjusted performance attributes associated with each identified capability. Other aspects, embodiments, and features are also included. | 09-26-2013 |
20130250867 | APPARATUS AND METHOD FOR ENABLING AN ENHANCED ACCESS CHANNEL ACCORDING TO CONTROL INFORMATION ON A PAGING CHANNEL - Apparatus and methods are provided for enabling communication on an enhanced access channel (EACH) without necessitating the additional features or channels usually implemented along with this capability. To this end, control information corresponding to the EACH transmission may be provided to an access terminal on a paging channel (PCH). For example, a base station may broadcast a general access parameters message (GAPM) to enable the access terminal to configure EACH transmissions. Further, the PCH may carry acknowledgment messages to inform the access terminal of the status of the EACH transmissions. Other aspects, embodiments, and features are also claimed and described. | 09-26-2013 |
20130252609 | METHODS AND DEVICES FOR FACILITATING ACCESS TERMINAL REGISTRATION WITH A REGISTRATION SERVER - Access terminals are adapted to communicate with registration servers to enable a registration server to perform timer-based registrations on behalf of an access terminal. The access terminal can cease performing such timer-based registrations as long as the registration server performs the registrations, and may power down until event data is available for transmission or reception. When a registration server performs timer-based registrations on behalf of an access terminal, the registration server can periodically communicate with a network entity to conduct the timer-based registrations for the access terminal. The network entity can receive a timer-based registration message from a registrations server for registering an access terminal. In response to such a message, the network entity can register the access terminal. Sensors and controllers may be used with some embodiments to collect and analyze data and for potentially taking action. Other aspects, embodiments, and features are also claimed and described. | 09-26-2013 |
20130268820 | METHOD AND APPARATUS FOR SELECTIVE ACKNOWLEDGEMENT OF PACKETS FROM AN ACCESS PROBE - Aspects of the present disclosure are directed to apparatuses and methods capable of selective acknowledgement of packets from an access probe. In one aspect, an apparatus includes: a transceiver configured to receive a set of frames associated with an access probe message from a wireless node, wherein the access probe message includes a plurality of frames, and the set of frames comprises a subset of the plurality of frames; and a processing system configured to generate a selective acknowledgement message based on a determination of whether each frame in the set of frames is received correctly. The acknowledgement includes an indication of receipt for at least one frame in the set of frames. Other aspects, embodiments, and features are also claimed and described. | 10-10-2013 |
20130281028 | APPARATUS AND METHOD FOR SELECTION BETWEEN RECEIVERS IN A WIRELESS COMMUNICATION SYSTEM - Apparatus and methods are disclosed for selecting between a Rake receiver and an interference cancellation engine (ICE) for receiving forward link signals in a wireless communication network. Selection can be based on one or more of various factors in the channel. These factors can include an average SINR of at least one of the first receiver or the second receiver, a dispersion of a downlink channel, a flatness metric, a number of locked fingers at the first receiver or the second receiver, or a size of an Active Set. Other aspects, features, and embodiments are claimed and described. | 10-24-2013 |
20130301437 | APPARATUS AND METHOD FOR CONTROLLING AN ACCESS PROBE TRANSMIT POWER ACCORDING TO A REVERSE LINK UNDERLOAD CONDITION - Apparatus and methods are disclosed for adapting the power of an access probe transmission, in accordance with a reverse link underload indicator provided by the base station. In one example, the base station can transmit a one-bit reverse link underload indicator as an information element broadcasted within a general page message (GPM). Here, the reverse link underload indicator can indicate whether a measured rise-over-thermal (RoT) at the base station is less than a given threshold. The access terminal may accordingly reduce the initial transmit power of an access probe transmission in the case of a reverse link underload condition, as this condition would indicate that the base station could accommodate reduced power access probe transmissions without substantially decreasing the probability of a quick detection of the access attempt. Other aspects, embodiments, and features are also claimed and described. | 11-14-2013 |
20130308554 | SYSTEMS, APPARATUS, AND METHODS FOR ANTENNA SELECTION - This disclosure provides systems, methods, and apparatus for mobile transmit diversity. In one aspect, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas. The wireless communication apparatus further includes a plurality of transmit circuits, each transmit circuit of the plurality of transmit circuits being configured to transmit according to a different radio access technology. The wireless communication apparatus further includes a controller configured to selectively switch each of the transmit circuits of the plurality of transmit circuits to transmit wireless communications via a corresponding one of the plurality of antennas based on priority levels of data for each of the transmit circuits and a detected operating mode of the wireless communication apparatus. | 11-21-2013 |
20130308562 | ANTENNA SELECTION DEVICES, METHODS, & SYSTEMS - A method, an apparatus, and a computer program product for wireless communication are provided in connection with improving antenna selection for a UE as part of an access procedure. In an example, a UE with two or more antennas is equipped to obtain receive chain measurements for the two or more antennas associated with the UE when an access procedure is initiated, select an antenna, of the two or more antennas, for transmission based on receive chain measurements for use during at least a portion of the access procedure, and perform the access procedure using the selected antenna. In another example, the UE is equipped to determine that an Access procedure is to be initiated, select an antenna from the two or more antennas based on a selection algorithm, and perform the Access procedure based using the selected antenna. Other aspects, embodiments, and features are also claimed and described. | 11-21-2013 |
20130308608 | ANTENNA SWITCHING DEVICES, METHODS, AND SYSTEMS FOR SIMULTANEOUS COMMUNICATION - This disclosure provides systems, methods, and apparatus for antenna switching for simultaneous communication. One apparatus embodiment includes a plurality of antennas including a first antenna, a second antenna, and a third antenna. The wireless communication apparatus further includes a plurality of receive circuits including a first receive circuit, at least two of the plurality of receive circuits each configured to simultaneously receive, with respect to the other, wireless communications from a different one of at least two networks relating to different radio access technologies. The wireless communication apparatus further includes a controller configured to selectively switch the first receive circuit from receiving wireless communications via the first antenna to receive wireless communications via the second antenna based on one or more performance characteristics of at least one of the first antenna and the second antenna. Other aspects, embodiments, and features are also claimed and described. | 11-21-2013 |
20130309981 | SYSTEMS, APPARATUS, AND METHODS FOR ANTENNA SELECTION - This disclosure provides systems, methods, and apparatus for mobile transmit diversity. In one aspect, a wireless communication apparatus is provided. The wireless communication apparatus includes a transmit circuit configured to transmit wireless communications via either a first antenna or a second antenna. The wireless communication apparatus further includes a receive circuit configured to receive wireless communications using either the first antenna or the second antenna. The wireless communication apparatus further includes a controller configured to switch the transmit circuit and the receive circuit from transmitting and receiving wireless communications via the first antenna to transmit and receive wireless communications via the second antenna in response to detecting that a first receive power level of the first antenna is less than a second receive power level of the second antenna and a difference between the second receive power level and the first receive power level is greater than a threshold. | 11-21-2013 |
20130315143 | METHOD AND APPARATUS FOR FAST CLOSED-LOOP RATE ADAPTATION IN A HIGH RATE PACKET DATA TRANSMISSION - In a high data rate communication system capable of variable rate transmission, an open loop rate control can be adjusted with a closed loop rate control to maximize throughput. An access point generates interleaved multi-slot packets that allow an access terminal to transmit indicator messages to the access point in accordance with recently received data carried within slots of the multi-slot packets. | 11-28-2013 |
20130329616 | METHODS AND DEVICES FOR MITIGATING POWER CONSUMPTION IN SLOTTED MODE COMMUNICATION PROTOCOLS - Methods and devices for mitigating power consumption in CDMA slotted mode are aspects of the present disclosure. A method for controlling an access terminal includes entering an awake state of a slotted idle mode, adjusting a reacquisition time for acquiring a pilot signal from a first cell in accordance with a pilot signal quality from the first cell recorded in a prior awake state, and acquiring the pilot signal. Other aspects, embodiments, and features are also claimed and described. | 12-12-2013 |
20140003341 | METHODS AND DEVICES FOR CONTROLLING UPLINK TRANSMIT POWER AT AN ACCESS TERMINAL | 01-02-2014 |
20140079155 | SYSTEM AND METHOD FOR SUPPORTING MULTIPLE REVERSE LINK DATA STREAMS - A method for wireless communication includes determining a number of uplink data streams to transmit from a mobile device and determining a selection of antennas from a plurality of antennas for transmitting the uplink data streams. The method also includes determining beamforming parameters based at least in part on a beamforming identifier. The method further includes transmitting a first data stream via the selection of antennas in accordance with the beamforming parameters and transmitting a second data stream in response to determining that the number of uplink data streams is at least two. | 03-20-2014 |
20140105085 | DEVICES AND METHODS FOR FACILITATING DISCONTINUOUS TRANSMISSION ON ACCESS TERMINALS - Access terminals are adapted to facilitate discontinuous transmission (DTX). According to one example, an access terminal can employ a short timescale DTX mode and a long timescale DTX mode independent of one another. The access terminal can determine whether a first set of predetermined factors are present. When the first set of factors are determined to be present, the access terminal may enable a short timescale DTX mode, independent of whether a long timescale DTX mode is enabled or not. A determination may also be made whether a second set of predetermined factors are present. When the second set of predetermined factors are determined to be present, the access terminal may enable a long timescale DTX mode, independent of whether the short timescale DTX mode is enabled or not. Other aspects, embodiments, and features are also included. | 04-17-2014 |
20140105126 | APPARATUS AND METHODS FOR ENHANCED MAXIMUM POWER IN MULTICARRIER WIRELESS COMMUNICATIONS - Aspects of the present disclosure are directed to improving maximum transmit power in multi-carrier reverse-link transmission. In one aspect, a method of carrier management for a multi-carrier reverse link transmission is disclosed. A method can include transmitting a reverse link signal on a plurality of carriers, and the reverse link signal including payload data and overhead data. A method can funnel payload data onto a first carrier of the plurality of carriers, while maintaining transmission of the overhead data on all the carriers of the plurality of carriers. Other aspects, embodiments, and features are also claimed and described. | 04-17-2014 |
20140112127 | METHOD AND APPARATUS FOR UPLINK CHANNEL CAPACITY ESTIMATION AND TRANSMISSION CONTROL - Aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to estimation of an uplink channel capacity. In an aspect, provided is a method of wireless communication, which may include determining whether a current transmit time interval (TTI) is relevant for computing the uplink channel capacity estimate, determining the transmission type of the current TTI where the current TTI is relevant, determining whether data is transmitted during the current TTI, computing a data capacity value based on at least one upload channel parameter, summing the data capacity values of TTIs from a window length start TTI to the current TTI to generate a data capacity sum, computing the uplink channel capacity estimate as a ratio of the data capacity sum to a total time period of all relevant TTIs during a window length interval, and accordingly adjusting a transmission rate of output traffic. | 04-24-2014 |
20140161048 | SYSTEMS, APPARATUS, AND METHODS FOR MITIGATING TRANSMITTER INDUCED DESENSE - This disclosure provides systems, methods, and apparatus for mobile transmit diversity. In one aspect a method of controlling a transmit power level of a wireless communications apparatus is provided. The method includes adjusting the transmit power level of a transmitter of the wireless communications apparatus to a first transmit power level in response to detecting a de-sense event indicative of interference with a signal received by a receiver of the wireless communications apparatus due to emissions from the transmitter. The method further includes maintaining the transmit power level substantially at the first transmit power level for a first time interval in response to adjusting the transmit power level to the first transmit power level. The method further includes adjusting a transmit power level limit of the transmitter after the time interval at a rate for a second time interval. | 06-12-2014 |
20140164809 | METHODS AND DEVICES FOR REGULATING POWER IN WIRELESS RECEIVER CIRCUITS - Access terminals are adapted to regulate power in wireless receiver circuits. In one example, access terminals include a communications interface with at least one wireless receiver circuit. A processing circuit coupled with the communications interface can determine that data is not expected to be received by the access terminal for a period of time while operating in a connected mode. One or more components of the wireless receiver circuit, including a low noise amplifier (LNA) of the wireless receiver circuit, can subsequently be powered down (e.g., set to a passive state) in response to such a determination. Other aspects, embodiments, and features are also claimed and described. | 06-12-2014 |
20140201556 | MANAGING MODEM POWER CONSUMPTION - Methods, systems, and devices are described for managing power consumption in a modem of a mobile device. A receive power associated with a receiver of the modem may be measured during a scheduled power-up of the modem associated with checking for paging messages. A power consumption metric associated with transmitting a pending wireless data transaction at a transmitter of the modem may then be estimated based on the measured receive power associated with the receiver. A determination of whether to transmit the pending wireless data transaction at a first time may then be made based at least in part on the estimated power consumption metric. | 07-17-2014 |
20140233450 | MULTICASTING WITHIN A WIRELESS COMMUNICATIONS SYSTEM - An access network determines to transmit multicast messages on a downlink shared channel. The access network receives a multicast registration message and a traffic channel request from at least one access terminal. The access network assigns a traffic channel to the at least one access terminal, and transmits the multicast messages on the downlink shared channel. In another example, the access network can determine a channel type upon which the support a multicast session, can indicate the channel type selection to the at least one access terminal in an announce message and can then transmit the multicast messages for the multicast session on the selected channel type. The at least one access terminal receives the announce message, requests a traffic channel and receives a traffic channel assignment, registers to the multicast session and monitors the downlink shared channel for multicast messages. | 08-21-2014 |
20140247761 | WIRELESS COMMUNICATION DEVICE POWER REDUCTION METHOD AND APPARATUS - A wireless communications power saving method and apparatus is provided. The method includes, when no reverse link traffic exists and no forward link traffic has been received for a predetermined amount of time, establishing, at a terminal, a reverse link transmission pilot signal duty cycle, and boosting overhead channel signal transmission power during ON slots and gating overhead channel and pilot signal transmission power during OFF slots. The design further includes estimating, at the terminal, an available data transmission rate, determining an actual data transmission rate, setting a terminal transmission duty cycle for a next period based on the estimated available data transmission rate, the actual data transmission rate, and a margin of error, and transmitting data from the terminal according to the terminal transmission duty cycle. | 09-04-2014 |
20140274201 | DUAL-SIM WIRELESS COMMUNICATIONS DEVICE AND METHOD FOR MITIGATING RECEIVER DESENSE IN DUAL-ACTIVE OPERATION - Aspects of the disclosure provide for an access terminal configured to enable communication with two or more wireless communications networks simultaneously. According to some aspects of the disclosure, an access terminal (e.g., dual-SIM access terminal) can be active simultaneously on both networks with reduced interference between transmission and reception. A number of different techniques for mitigating desense on a victim's Rx are illustrated in this disclosure with a GSM aggressor and an EV-DO victim as non-limiting examples. Other aspects, embodiments, and features are also claimed and described | 09-18-2014 |
20140348010 | METHODS AND APPARATUS FOR IMPROVING CALL PERFORMANCE BY ENABLING UPLINK TRANSMISSIONS DURING POOR DOWNLINK RADIO CONDITIONS - Apparatus and methods of improving call performance by enabling/continuing uplink transmissions during poor downlink radio conditions. The apparatus and methods further include monitoring, by a user equipment (UE), downlink (DL) signal conditions associated with a serving Node B. Moreover, the apparatus and methods include triggering an out-of-sync state upon a determination that the DL signal conditions have degraded beyond a DL signal quality threshold. Additionally, the apparatus and methods include delaying turning off of a power amplifier (PA) associated with transmission of uplink (UL) messages for a call performance improvement threshold time duration. | 11-27-2014 |
20140349653 | METHODS AND APPARATUS FOR PROVIDING ENHANCED TIME-TO-TRIGGER MECHANISM TO IMPROVE UE CALL PERFORMANCE - Methods and apparatus for wireless communication include monitoring, by a user equipment, a signal quality value from at least one of a serving cell or a target cell. The methods and apparatus further include determining, at an expiration of an internal time to trigger (TTT) less than a network-configured TTT, that at least one of the signal quality value from the serving cell is below a serving cell threshold value, or the signal quality value from the target cell is above the signal quality of the serving cell by a comparative threshold value. Moreover, the methods and apparatus include triggering generation of a measurement report based on the determination. | 11-27-2014 |
20140355458 | METHOD AND APPARATUS FOR ENHANCED APPLICATION SIGNALING FROM A WIRELESS COMMUNICATIONS DEVICE - Methods and apparatus for signaling adjustments include identifying, by a user equipment (UE), a change in a reachability state of the UE based at least in part on one or more channel metrics determined by a modem in the UE. Further, the methods and apparatus include adjusting a transmission of connectivity signals (e.g., keep-alive signals) to a server from an application on the UE, the adjusting being based at least in part on an indication of the change in the reachability state provided to the application via an interface in communication with the modem (e.g., modem application programming interface or API). Additionally, the methods and apparatus can include transmitting an indication of the change in the reachability state to the server. Moreover, the methods and apparatus may accommodate signaling adjustments for one or more applications on the UE and one or more servers in a wireless communication system. | 12-04-2014 |
20140362160 | APPARATUS AND METHODS FOR MODEM ASSISTED VIDEO TELEPHONY - Aspects of the present disclosure provide an apparatus and method for modem-assisted video telephony. As one example, a user equipment (UE) utilizes a modem to perform video telephony (VT) communication with a remote device through a wireless network. The UE determines a network metric indicative of congestion in the wireless network based on modem information obtained from the modem, independent of feedback information received from the remote device. The UE dynamically adjusts a data rate of the VT communication by an amount proportional to a quantity based on the network metric. | 12-11-2014 |
20140376400 | APPARATUS AND METHOD FOR DYNAMIC USER EQUIPMENT CAPABILITY REPORTING BASED ON DATA ACTIVITY - Aspects of the disclosure provide an apparatus and methods for dynamic user equipment capability reporting. A user equipment (UE) is configured to communicate with a network utilizing a plurality of communication protocols including a first communication protocol and a second communication protocol. The UE communicates with the network utilizing the first communication protocol with a maximum achievable throughput less than that of the second communication protocol, and the UE dynamically reports a capability of the UE to transfer data utilizing the second communication protocol in consideration of a power efficiency of transferring an amount of data utilizing the first communication protocol or the second communication protocol. | 12-25-2014 |
20150017940 | APPARATUS AND METHOD FOR ADAPTIVE RECEIVE DIVERSITY USING LINK QUALITY IN WIRELESS COMMUNICATIONS - Aspects of the present disclosure relate to apparatuses and methods for performing adaptive receive-diversity (RxD) to improve power consumption using multiple antennas/receivers. In one aspect, a first receive-diversity (RxD) state is enabled at an access terminal utilizing two receive chains for a communication link. Link quality metrics corresponding to the communication link are determined. The access terminal selectively switches from the first RxD state to a second RxD state utilizing three or more receive chains dependent upon the link quality metrics, such that the energy per bit of the second RxD state is more energy efficient than the energy per bit of the first RxD state. | 01-15-2015 |
20150023217 | DUAL SIM DUAL ACTIVE SUBSCRIBER IDENTIFICATION MODULE WITH A SINGLE TRANSMIT CHAIN AND DUAL OR SINGLE RECEIVE CHAIN - A method, an apparatus, and a computer program product are provided. The apparatus may be configured to establish a first call for a first subscription, and accept a second call for a second subscription while maintaining the first call. A single RF transmit chain may be scheduled for uplink transmissions associated with the first call and uplink transmissions associated with the second call. A timesharing schedule for the transmit chain may determine timing for the uplink transmissions associated with the first call is transmitted and when the uplink transmissions associated with the second call is transmitted on the transmit chain. Downlink transmissions associated with the first and second calls may be received using different receive chain. Downlink transmissions associated with the first and second calls may be received using the same receive chain. | 01-22-2015 |
20150023230 | DUAL SIM DUAL ACTIVE SUBSCRIBER IDENTIFICATION MODULE WITH A SINGLE TRANSMIT CHAIN AND DUAL OR SINGLE RECEIVE CHAIN - A method, an apparatus, and a computer program product are provided. The apparatus may be configured to establish a first call for a first subscription, and accept a second call for a second subscription while maintaining the first call. A single RF transmit chain may be scheduled for uplink transmissions associated with the first call and uplink transmissions associated with the second call. A timesharing schedule for the transmit chain may determine timing for the uplink transmissions associated with the first call is transmitted and when the uplink transmissions associated with the second call is transmitted on the transmit chain. Downlink transmissions associated with the first and second calls may be received using different receive chain. Downlink transmissions associated with the first and second calls may be received using the same receive chain. | 01-22-2015 |
20150023258 | DUAL SIM DUAL ACTIVE SUBSCRIBER IDENTIFICATION MODULE WITH A SINGLE TRANSMIT CHAIN AND DUAL OR SINGLE RECEIVE CHAIN - A method, an apparatus, and a computer program product are provided. The apparatus may be configured to establish a first call for a first subscription, and accept a second call for a second subscription while maintaining the first call. A single transmit chain may be used to transmit uplink traffic associated with the first call and uplink traffic associated with the second call. A timesharing schedule for the transmit chain may determine when the uplink traffic associated with the first call is transmitted and when the uplink traffic associated with the second call is transmitted on the transmit chain. Downlink traffic associated with the first and second calls may be received using different receive chain. Downlink traffic associated with the first and second calls may be received using the same receive chain. | 01-22-2015 |
20150043337 | METHODS AND APPARATUSES FOR ADAPTING APPLICATION UPLINK RATE TO WIRELESS COMMUNICATIONS NETWORK - Various apparatuses and methods for transmitting uplink data of an application at a user equipment are provided. In one aspect of the disclosure, uplink data of an application at a user equipment (UE) is transmitted to a network. A first amount of the uplink data expected to be buffered at a radio link control (RLC) layer is determined based on a latency of the application. A second amount of the uplink data available for transmission at the RLC layer is determined based on information provided by a modem of the UE. A data rate of the application is dynamically adjusted based on a difference between the first amount and second amount of the uplink data. In another aspect of the disclosure, an amount of the application data buffered at the RLC layer is maintained to be greater than a predetermined threshold that sets a Happy bit at an unhappy setting. The unhappy setting is communicated to the network, a data rate of the application is increased in response to an increased grant from the network due to the unhappy setting. In another aspect of the disclosure, a maximum modem supported data rate at which the user equipment (UE) transmits uplink data of an application is determined based on an uplink channel capacity estimate, a modem queue length estimate, a codec rate change frequency of the application, and a delay threshold of the modem queue. | 02-12-2015 |
20150055528 | DEVICES AND METHODS FOR FACILITATING AUTONOMOUS DISCONTINUOUS TRANSMISSION IN ACCESS TERMINALS - Access terminals are adapted to facilitate discontinuous transmission (DTX) employable during active transmissions. According to one example, an access terminal may be actively transmitting a plurality of frames on a reverse link channel. The access terminal can autonomously implement a DTX operation during the active reverse link transmissions, in which a transmitter circuit is powered down for periods of time less than a duration of one frame. As a result, reverse link transmissions are punctured during the powered down periods. Other aspects, embodiments, and features are also included. | 02-26-2015 |
20150055630 | HANDOVER MECHANISM THAT EXPLOITS UPLINK CHANNEL QUALITY OF A TARGET CELL - System(s) and method(s) are provided for handover of a mobile terminal in a wireless communication system. Handoff resolution relies on both a downlink channel quality indication between a serving base station and the mobile terminal, and uplink channel quality indications amongst the terminal and a measurement set of target base stations. To generate UL channel quality indicators, the mobile station conveys a narrowband or broadband sounding reference signal, and serving and target base stations measure UL and DL performance metrics (e.g., RSRP, RSSI, or RSOT). In backward handover, UL channel state information from target cells is received at the serving base station through backhaul communication, and handoff is resolved based on both UL and DL quality reports. In forward handover, the set of UL quality reports are conveyed to the mobile station to determine a target cell for handoff. | 02-26-2015 |
20150057039 | DISTRIBUTED ANTENNA SYSTEMS AND METHODS OF WIRELESS COMMUNICATIONS FOR FACILITATING SIMULCASTING AND DE-SIMULCASTING OF DOWNLINK TRANSMISSIONS - Distributed antenna systems (DASs) can include a plurality of spatially separated remote antenna units. According to at least one example, a first group of remote antenna units can simulcast downlink transmissions on a first carrier with a particular sector identity (ID). A second group of remote antenna units, including at least one different remote antenna unit from the first group, can simulcast downlink transmissions on a second carrier with the same sector ID. According to at least one other example, two or more remote antenna units which include respective coverage areas that are non-adjacent to one another can be employed to simulcast downlink transmissions. | 02-26-2015 |
20150063225 | METHOD AND APPARATUS FOR MAINTAINING REACHABILITY OF A USER EQUIPMENT IN IDLE STATE - Certain aspects of the present disclosure relate to apparatuses and methods for maintaining reachability at a user equipment (UE). In one aspect, the apparatuses and methods are configured to detect a change in a radio connection between the UE and a peer entity, wherein the change in the radio connection is associated with the UE entering an idle state, to communicate to the peer entity, in response to detecting the change in the radio condition, an indication that the UE is to enter the idle state and is reachable for a specified duration of time while in the idle state, and to enter the idle state after communicating the indication to the peer entity. In another aspect, the apparatuses and methods are configured to communicate to the peer entity an indication that the peer entity is not to attempt to reach the UE during the specified duration of time. | 03-05-2015 |
20150072667 | COMMUNICATING PHYSICAL LAYER WIRELESS PARAMETERS OVER AN APPLICATION PROGRAMMING INTERFACE - Methods, systems, and devices are described for communicating physical layer wireless parameters over an application programming interface. A wireless modem of a wireless device may measure at least one physical layer wireless parameter. The wireless modem may report the at least one physical layer wireless parameter to an application running on the wireless device over an application programming interface between the wireless modem and the application. A behavior of the application may be adapted to control wireless communications between the application and a network based on the at least one physical layer wireless parameter reported by the wireless modem. Other aspects, embodiments, and features are also claimed and described. | 03-12-2015 |
20150078483 | APPARATUS AND METHOD FOR FAST LOCAL OSCILLATOR RE-TUNE FOR RESIDUAL SIDE BAND REDUCTION - Various aspects of the present disclosure are directed to apparatuses and methods that can mitigate the undesirable effects of residual side band (RSB) signal by actively re-tuning the local oscillator of a transmitter to be at or near the center frequency of the carrier. Other aspects, embodiments, and features are also claimed and described. | 03-19-2015 |