Patent application number | Description | Published |
20130035132 | COMBINED OPEN LOOP/CLOSED LOOP (CQI-BASED) UPLINK TRANSMIT POWER CONTROL WITH INTERFERENCE MITIGATION FOR E-UTRA - A combined open loop and closed loop (channel quality indicator (CQI)-based) transmit power control (TPC) scheme with interference mitigation for a long term evolution (LTE) wireless transmit/receive unit (WTRU) is disclosed. The transmit power of the WTRU is derived based on a target signal-to-interference noise ratio (SINR) and a pathloss value. The pathloss value pertains to the downlink signal from a serving evolved Node-B (eNodeB) and includes shadowing. An interference and noise value of the serving eNodeB is included in the transmit power derivation, along with an offset constant value to adjust for downlink (DL) reference signal power and actual transmit power. A weighting factor is also used based on the availability of CQI feedback. | 02-07-2013 |
20130039210 | METHOD AND APPARATUS FOR INDICATING A TEMPORARY BLOCK FLOW TO WHICH A PIGGYBACKED ACK/NACK FIELD IS ADDRESSED - A method and an apparatus for indicating a temporary block flow (TBF) to which a piggybacked acknowledgement/non-acknowledgement (PAN) field is addressed. A method and apparatus of performing receive processing to reduce the probability of false acceptance of erroneous PANs are also disclosed. A transmit station generates a PAN check sequence (PCS) and performs a channel coding on a PAN field and the PCS. The transmit station scrambles the encoded bits of the PAN field and the PCS with a TBF-specific scrambling code. Because of the scrambling, the PCS decoding at a receive station will pass if the data block is received by an intended receive station, while the PCS decoding will fail if received by a non-intended receive station. Alternatively, the scrambling may be performed before the channel coding. Alternatively, the transmit station may combine the PAN field and a temporary flow identity (TFI) to generate a PCS. | 02-14-2013 |
20130039441 | METHOD AND APPARATUS FOR IMPLEMENTING SPACE TIME PROCESSING WITH UNEQUAL MODULATION AND CODING SCHEMES - A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream. | 02-14-2013 |
20130044690 | METHOD AND SYSTEM FOR SUPPORTING AN EVOLVED UTRAN - A method and system for supporting an evolved universal mobile telecommunication systems (UMTS) terrestrial radio access network (E-UTRAN) are disclosed. The system includes a wireless transmit/receive unit (WTRU), a UTRAN and an E-UTRAN. The UTRAN sends to the WTRU a list of available radio access technologies in a coverage area of the UTRAN. The list includes information related to the E-UTRAN. The WTRU receives the list and may initiate a handoff based on the list. The WTRU then sends its multi-mode/multi-RAT capability information including the E-UTRAN capability to the UTRAN. The UTRAN then sends a measurement capability message to the WTRU. The measurement capability message includes parameters necessary for performing measurements on an E-UTRAN channel. The WTRU performs measurements based on the measurement capability message and reports measurement results to the UTRAN. The UTRAN may initiate a handoff to the E-UTRAN based on the measurement results. | 02-21-2013 |
20130044734 | SIMPLE BLOCK SPACE TIME TRANSMIT DIVERSITY USING MULTIPLE SPREADING CODES - A base station and user equipment (UE) for use in a CDMA communication system are disclosed. The base station includes a first and second antenna for transmitting first and second communication bursts. The first channelization device spreads data using a first channelization code and the second channelization device spreads the data using a second channelization code. The UE has a data detection device for receiving a signal including the first and second communication bursts. | 02-21-2013 |
20130051328 | METHOD AND APPARATUS FOR SELECTING A MULTI-BAND ACCESS POINT TO ASSOCIATE WITH A MULTI-BAND MOBILE STATION - A method and apparatus may be used for selecting one of a plurality of multi-band APs to associate with a multi-band WTRU. The multi-band APs may broadcast frequency band information regarding multiple frequency bands on which the multi-band AP is configured to operate. The multi-band WTRU may select a multi-band AP to associate with and a frequency band to use to communicate with the selected multi-band AP based on the frequency band information. The multi-band AP may transmit frequency band information from the that indicates that a characteristic, (e.g., throughput, path loss, load, capacity, backhaul), of the selected frequency band and disassociate with the multi-band WTRU or to continue to associate with the multi-band WTRU via a different frequency band. | 02-28-2013 |
20130051370 | METHOD FOR USING A BASE STATION TO SELECTIVELY UTILIZE B AND D CHANNELS TO SUPPORT A PLURALITY OF COMMUNICATIONS - A method for using a wireless digital base station to receive, process and transmit a plurality of communications having independent data rates establishing a first communication channel having a first data communication rate to support a first communication; determining the data rate required to support the first communication; selecting one or more transmission channels, from a plurality of available transmission channels, required to support said required data rate; and transmitting the first communication using one or more selected transmission channels. The plurality of available transmission channels includes at least one B or D channel. | 02-28-2013 |
20130059624 | FAST ADAPTIVE POWER CONTROL FOR A VARIABLE MULTIRATE COMMUNICATIONS SYSTEM - A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal in which the user data signal having a first rate is converted into a transmission data signal having a faster second rate for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of the first and second rates such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. | 03-07-2013 |
20130067293 | METHOD AND APPARATUS FOR HYBRID AUTOMATIC REPEAT REQUEST TRANSMISSION - A method and apparatus for hybrid automatic repeat request (HARQ) transmission are disclosed. If a packet has not been successfully transmitted, it is determined whether an HARQ early termination condition is met. If the HARQ early termination condition is met, the HARQ process is terminated and the packet is discarded at the HARQ level. The HARQ early termination condition is met if a positive acknowledgement (ACK) has not been received until the number of retransmissions reaches a predetermined limit that is dynamically configured based on channel condition, measurement, etc. Alternatively, the HARQ early termination condition is met if a transmit power required for successful transmission of the packet is much higher than an actual transmit power. Alternatively, the HARQ early termination condition is met if a transport format combination (TFC) selected for retransmission is different from an optimal TFC. A higher layer may be notified of the early HARQ termination. | 03-14-2013 |
20130072161 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR PERFORMING HOME NODE-B IDENTIFICATION AND ACCESS RESTRICTION - A method and a wireless transmit/receive unit (WTRU), including a universal subscriber identity module (USIM), for identifying a closed subscriber group (CSG) cell are disclosed. The WTRU receives a broadcast from a cell including a cell identifier (ID). If the cell ID is associated with a CSG cell, the WTRU determines whether the CSG ID is programmed in the USIM. The cell broadcast may include a single bit information element (IE) indicating that the cell is a CSG cell. If the cell ID is a CSG ID, the cell ID may further include a plurality of fields which indicate at least one of a country, a region, an operator, and a home evolved Node-B (HeNB) number. The cell broadcast may further include a bit indicating whether the CSG cell is public or private. The cell broadcast may further include a bit indicating that emergency calls are allowed from all users. | 03-21-2013 |
20130077613 | METHODS AND SYSTEMS FOR PROVIDING EFFICIENT OPERATION OF MULTIPLE MODES IN A WLAN SYSTEM - A method and apparatus that applies medium access control (MAC) transmission opportunity (TXOP) protection for multiple mode operation in a WLAN system. In particular, MAC mechanisms are defined to support multiple mode CTS frames, and multiple mode CF-End frames sent by the AP, each in a format appropriate for the corresponding mode which may also apply to a single mode. MAC mechanisms permit truncation of TXOP duration for releasing the unused portion of the TXOP when no further data for transmission is available. Release of unused protected TXOP is possible for both protected AP transmissions and STA transmissions. | 03-28-2013 |
20130121289 | METHOD AND SYSTEM FOR SUPPORTING MULTIPLE HYBRID AUTOMATIC REPEAT REQUEST PROCESSES PER TRANSMISSION TIME INTERVAL - A method and apparatus may be used for supporting multiple hybrid automatic repeat request (H-ARQ) processes per transmission time interval (TTI). A transmitter and a receiver may include a plurality of H-ARQ processes. Each H-ARQ process may transmit and receive one TB per TTI. The transmitter may generate a plurality of TBs and assign each TB to a H-ARQ process. The transmitter may send control information for each TB, which may include H-ARQ information associated TBs with the TBs. The transmitter may send the TBs using the associated H-ARQ processes simultaneously per TTI. After receiving the TBs, the receiver may send feedback for each of the H-ARQ processes and associated TBs indicating successful or unsuccessful receipt of each of the TBs to the transmitter. The feedback for multiple TBs may be combined for the simultaneously transmitted H-ARQ processes, (i.e., TBs). When MIMO is implemented, one H-ARQ process may be associated with one MIMO stream, or codeword. The feedback may include a channel quality indicator (CQI) per MIMO stream or codeword. The control information and the feedback may be sent via a layer 1 or layer 2/3 control part. | 05-16-2013 |
20130128928 | CANCELLATION OF PILOT AND TRAFFIC SIGNALS - A method for removing selected signals from a received signal prior to decoding begins by receiving communication signals from a transmitter over a CDMA air interface. The received communication signals are input to a traffic signal cancellation system for canceling unwanted traffic signals, thereby producing an output (O). The received communication signals are input to a pilot signal cancellation system for removing a global pilot signal, thereby producing an output (O | 05-23-2013 |
20130129092 | SYSTEM AND METHOD FOR PROVIDING VARIABLE SECURITY LEVEL IN A WIRELESS COMMUNICATION SYSTEM - A system and method for providing variable security levels in a wireless communication network. The present invention optimizes the often conflicting demands of highly secure wireless communications and high speed wireless communications. According to a preferred embodiment of the present invention, various security sensors are scanned to determine the likely presence of an intruder within a predetermined trust zone. If an intruder is likely present, the security level is changed to the highest setting, and consequently a lower data rate, while the intruder is identified. If the identified intruder is in fact a trusted node, the security level is returned to a lower setting. If the identified intruder is not a trusted node, the security level is maintained at an elevated state while the intruder is within the trust zone. | 05-23-2013 |
20130130704 | METHOD AND APPARATUS FOR VALIDATING RADIO RESOURCE CONTROL MESSAGES - A method for validating radio resource control (RRC) messages includes determining whether an RRC message received by a wireless transmit-receive unit (WTRU) is valid based on: an RRC state for which the WTRU is configured, whether or not the WTRU needs a new transport format combination set, and whether or not the RRC message will configure the WTRU for a CELL_DCH state. A WTRU includes a rule application device configured to implement the method. | 05-23-2013 |
20130142044 | COGNITIVE FLOW CONTROL BASED ON CHANNEL QUALITY CONDITIONS - A system and method which improve the performance of a wireless transmission system by intelligent use of the control of the flow of data between a radio network controller (RNC) and a Node B. The system monitors certain criteria and, if necessary, adaptively increases or decreases the data flow between the RNC and the Node B. This improves the performance of the transmission system by allowing retransmitted data, signaling procedures and other data to be successfully received at a faster rate, by minimizing the amount of data buffered in the Node B. Flow control is exerted to reduce buffering in the Node B upon degradation of channel qualities, and prior to a High Speed Downlink Shared Channel (HS-DSCH) handover. | 06-06-2013 |
20130142068 | METHOD AND SYSTEM FOR AUTONOMOUS CHANNEL COORDINATION FOR A WIRELESS DISTRIBUTION SYSTEM - A method and system for autonomous channel coordination for a wireless distribution system (WDS) are disclosed. A wireless communication system includes a plurality of access points (APs) and the APs communicate each other via a WDS. A coordinated channel group (CCG) of a plurality of member APs is established. The member APs of the CCG camp on a WDS channel used for the WDS among the member APs of the CCG. One AP among the member APs of the CCG is designated as a master AP. The master AP coordinates with other member APs of the CCG for selecting and configuring the WDS channel for the CCG and addition and deletion of member APs. By allowing APs to define a CCG, changes of the WDS channel are performed autonomously while maintaining connectivity. | 06-06-2013 |
20130142102 | MODULAR BASE STATION WITH VARIABLE COMMUNICATION CAPACITY - The present invention provides a base station architecture that is modular in configuration, lowering the initial cost of implementing a new CDMA telecommunication system for a defined geographical region while allowing for future capacity. The scalable architecture is assembled from a digital base station unit that is configured to support a plurality of simultaneous wireless calls connecting to a conventional public switched telephone network. For initial startup, two base station units are deployed for redundancy in case of a single failure. Additional base station units may be added when the need arises for extra traffic capacity. If sectorization is required, the base station units may be directionally oriented. Coupled to and remote from each base station unit are two amplified antenna modules that contain an omni-directional or an external directional antenna, a high power RF amplifier for transmitted frequencies and a low noise amplifier for received frequencies. A separate power supply module capable of supporting two base station units provides continued service in the event of a mains power outage. | 06-06-2013 |
20130142292 | METHOD AND APPARATUS FOR ESTIMATING FREQUENCY - A method and apparatus for use in connection with wireless communication to adjust the frequency of an oscillator to synchronize with a received signal by correlating a synchronization code channel with training sequences to estimate relative offsets which are employed to estimate an error, which is then filtered. The filtered output preferably provides a voltage controlling a voltage controlled oscillator (VCO). The same technique may be employed to control a numeric controlled oscillator (NCO). | 06-06-2013 |
20130148604 | WIRELESS MULTI-CELL COMMUNICATION SYSTEM AND METHOD FOR MANAGING RESOURCE POWER TO PROVIDE HIGH SPEED DOWNLINK PACKET ACCESS SERVICES - A method and wireless multi-cell communication system for providing high speed downlink packet access (HSDPA) services. The system includes a radio network controller (RNC) in communication with a plurality of base stations. The RNC sends a control signal to at least one base station having a plurality of timeslots, e.g., in a time division duplex (TDD) system and/or frames including transmission timing intervals (TTIs), e.g., in a frequency division duplex (FDD) system assigned thereto for the establishment of HSDPA channels. The control signal indicates a maximum allowed HSDPA transmit power for each of the timeslots and/or TTIs. The base station sends a feedback signal to the RNC indicating the results of measurements of the power of the transmitted HSDPA timeslots and/or TTIs during a predetermined time period. | 06-13-2013 |
20130150064 | RRC MESSAGES AND PROCEDURES - A method and apparatus for radio resource control (RRC) messaging. A method in a Node B includes transmitting a RRC change command including a plurality of commands to a wireless transmit/receive unit (WTRU), and receiving an RRC change response from the WTRU, wherein the RRC change command includes a command for performing a measurement gap configuration procedure and a command for performing a measurement gap activation procedure. | 06-13-2013 |
20130156193 | Method and Apparatus for Determining Joint Randomness - A method and apparatus for performing Joint Randomness Not Shared by Others (JRNSO) is disclosed. In one embodiment, JRNSO is determined in Frequency Division Duplex (FDD) using a baseband signal loop back and private pilots. In another embodiment, JRNSO is determined in Time Division Duplex (TDD) using a baseband signal loop back and combinations of private pilots, private gain functions and Kalman filtering directional processing. In one example, the FDD and TDD JRSNO embodiments are performed in Single-Input-Single-Output (SISO) and Single-Input-Multiple-Output (SIMO) communications. In other examples, the FDD and TDD embodiments are performed in Multiple-Input-Multiple-Output (MIMO) and Multiple-Input-Single-Output (MISO) communications. JRNSO is determined by reducing MIMO and MISO communications to SISO or SIMO communications. JRNSO is also determined using determinants of MIMO channel products. Channel restrictions are removed by exploiting symmetric properties of matrix products. | 06-20-2013 |
20130163578 | METHOD AND APPARATUS OF ENABLING MULTI BAND TRANSMISSION - A method and apparatus for enabling multi-band transmission includes receiving a beacon on a first radio band and receiving the beacon on a second radio band. The beacon includes synchronization information for transmission on the first and second radio bands. | 06-27-2013 |
20130165054 | METHOD AND APPARATUS FOR MEASURING INTERFERENCE IN WIRELESS STATIONS - A method for use in a station of measuring radio frequency (RF) interference is presented. An average noise power indicator of the STA (STA_ANPI) is determined. A rate of change of the STA_ANPI is monitored to determine an RF interference metric. The RF interference metric is transmitted to another network entity, whereby the another network entity is enabled to perform load balancing based on the RF interference metric. | 06-27-2013 |
20130166971 | Method And Apparatus For Encoding Channel Quality Indicator And Precoding Control Information Bits - A method and apparatus for encoding channel quality indicator (CQI) and precoding control information (PCI) bits are disclosed. Each of the input bits, such as CQI bits and/or PCI bits, has a particular significance. The input bits are encoded with a linear block coding. The input bits are provided with an unequal error protection based on the significance of each input bit. The input bits may be duplicated based on the significance of each input bit and equal protection coding may be performed. A generator matrix for the encoding may be generated by elementary operation of conventional basis sequences to provide more protection to a most significant bit (MSB). | 06-27-2013 |
20130166995 | METHOD AND APPARATUS FOR ENCODING AND DECODING HIGH SPEED SHARED CONTROL CHANNEL - A method and apparatus for encoding and decoding high speed shared control channel (HS-SCCH) data are disclosed. For part 1 data encoding, a mask may be generated using a wireless transmit/receive unit (WTRU) identity (ID) and a generator matrix with a maximum minimum Hamming distance. For part 2 data encoding, cyclic redundancy check (CRC) bits are generated based on part 1 data and part 2 data. The number of CRC bits is less than the WTRU ID. The CRC bits and/or the part 2 data are masked with a mask. The mask may be a WTRU ID or a punctured WTRU ID of length equal to the CRC bits. The mask may be generated using the WTRU ID and a generator matrix with a maximum minimum Hamming distance. The masking may be performed after encoding or rate matching. | 06-27-2013 |
20130170355 | METHOD AND APPARATUS FOR SUPPORTING UPLINK STARVATION AVOIDANCE IN A LONG TERM EVOLUTION SYSTEM - A method and apparatus for uplink (UL) starvation avoidance includes determining a current buffer status information. The current buffer status information is reported to an evolved Node B (eNB). A grant that includes a determination of a number of tokens a wireless transmit/receive unit (WTRU) may accumulate is received from the eNB. | 07-04-2013 |
20130176964 | HYBRID DEDICATED REFERENCE SIGNAL METHOD AND SYSTEM - The transmission and decoding of resource blocks (RBs) transmitted via a multiple-input multiple-output (MIMO) antenna having a plurality of transmit antennas is disclosed. Each RB includes a plurality of resource elements (REs). Each RE is reserved for one of a common reference signal (CRS) associated with one of the transmit antennas, a dedicated reference signal (DRS) including a single beamformed or precoded pilot, a DRS including a composite beamformed or precoded pilot, and a data symbol. Each RB may include a “control type” data symbol that indicates a DRS mode associated with the RB. In one DRS mode, each DRS includes a single beamformed or precoded pilot. In another DRS mode, each DRS includes a composite beamformed or precoded pilot. In yet another DRS mode, single beamformed or precoded pilots, and composite beamformed or precoded pilots, may coexist and be transmitted simultaneously within the same RBs or in different RBs. | 07-11-2013 |
20130195055 | SENDING AND REDUCING UPLINK FEEDBACK SIGNALING FOR WIRELESS TRANSMISSION OF DATA - A wireless transmit/receive unit includes at least one processor that receives a high speed physical downlink shared channel, and in response, transmits at least one random access channel preamble followed by ACK/NACK and channel quality indicator (CQI) information. The at least one random access channel preamble is selected from a set of random access preambles reserved for the ACK/NACK and CQI information. | 08-01-2013 |