| Patent application number | Description | Published |
|---|
| 20080285473 | ACCESS AND BACKHAUL FRAME INTERLACING FROM TIME DIVISION DUPLEX WIRELESS COMMUNICATION SYSTEM - A method, base station, and wireless communications system for interlacing Access and Backhaul frames in a Time Division Duplex wireless communication system. The method includes monitoring Access traffic and Backhaul traffic ( | 11-20-2008 |
| 20090052353 | SYSTEM AND METHOD FOR TRANSMISSION TIMESLOT ASSIGNMENT IN WIRELESS TIME DIVISION DUPLEX SYSTEMS - A method and apparatus is provided for assigning transmission slots in a time division duplex system. A time frame overlap determination processor ( | 02-26-2009 |
| 20090067383 | METHOD AND APPARATUS FOR A FREQUENCY DIVISION DUPLEX COMMUNICATION USING A TIME DIVISION DUPLEX MODEM - The present invention is directed to an communication unit an antenna and at least two modem cards. The first modem card is coupled to the antenna so that the first modem card transmits a first transmit signal at a first frequency during a first period and receives a first received signal at a second frequency during a second time period. The second modem card couple to the antenna so that the second modem card transmits a second transmit signal at the first frequency during the second time period and receives a second receive signal at the second frequency during the first time period. The communication unit can also include a synchronizer that is coupled to the first and second modem cards to generate a signal to synchronize the transmit and receive signals transmitted and received by the antenna. | 03-12-2009 |
| 20090122884 | CLOSED-LOOP TRANSMISSION FEEDBACK IN WIRELESS COMMUNICATION SYSTEMS - A method in an OFDM wireless user terminal that communicates with a base unit is disclosed. The method comprises computing a transmit spatial covariance matrix, transforming the spatial covariance matrix, and transmitting the transformed spatial covariance matrix to a base unit. | 05-14-2009 |
| 20090147735 | SYSTEM AND METHOD FOR NON-STANDARD WIRELESS BANDWIDTH COMMUNICATIONS - A wireless communications method and device including a transmitter ( | 06-11-2009 |
| 20090154605 | SYSTEM AND METHOD FOR PERFORMING DIRECT MAXIMUM LIKELIHOOD DETECTION - A method, wireless device, and wireless communication system perform Maximum Likelihood Detection. At least one data signal is accepting on at least one communication channel ( | 06-18-2009 |
| 20090225721 | HIERARCHICAL PILOT STRUCTURE IN WIRELESS COMMUNICATION SYSTEMS - A method for communicating control channel information in a wireless communication system, including transmitting a super-frame having a time-frequency resource region containing an allocation control channel and multiple pilot elements, at least some of which are associated with the allocation control channel, and indicating, in a configuration information control channel of the super-frame, a characteristic of the pilots elements associated with the allocation control channel. | 09-10-2009 |
| 20090238303 | METHOD AND SYSTEM FOR CODEBOOK-BASED CLOSED-LOOP MIMO USING COMMON PILOTS AND ANALOG FEEDBACK - A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station. | 09-24-2009 |
| 20090274204 | METHOD AND APPARATUS FOR PROVIDING CHANNEL QUALITY FEEDBACK IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM - In an OFDM communication system, a mobile station provides a radio access network (RAN) a channel quality metric second order statistic, in one embodiment a signal to noise plus interference power ratio (SINR) second order statistic and in particular an SINR standard deviation and/or variance, along with a mean channel quality metric, that is, a mean SINR. By providing both a mean channel quality metric and a channel quality metric second order statistic, the communication system permits the RAN to create a more accurate fading profile of an associated air interface, and in particular a downlink of the air interface, thereby facilitating an improved scheduling decision over the prior art and assuring that a packet has a higher probability to go through a downlink channel without too many retransmissions. | 11-05-2009 |
| 20090274226 | SOUNDING CHANNEL BASED FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for providing sounding channel based feedback in an OFDM communication system includes a first step ( | 11-05-2009 |
| 20090285169 | METHOD AND APPARATUS FOR ALLOCATING DOWNLINK POWER IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM - In an Orthogonal Frequency Division Multiplexing communication system, a radio access network allocates a transmit power for a downlink transmission to a mobile station based on a mean channel quality metric and a channel quality metric second order statistic, in various embodiments a channel quality metric variance or standard deviation, reported by the mobile station. | 11-19-2009 |
| 20090323614 | FRAME ALLOCATION TO SUPPORT LEGACY WIRELESS COMMUNICATION PROTOCOLS ON UPLINK TRANSMISSION | 12-31-2009 |
| 20100029288 | UPLINK SPATIAL DIVISION MULTIPLE ACCESS (SDMA) USER PAIRING AND SCHEDULING - A method, system and communication network for transmitting information signals via uplink (UL) collaborative SDMA, in a wireless communication system. Base station receiver estimates a channel gain associated with the transmission path(s) of each user and keeps a matrix of normalized covariance, between users. Based on the estimated channel gain and the normalized covariance, ULS utility is able to compute channel capacity. Based on capacity estimates of (1) the multiplexed user signals and (2) the individual user signals, signals are either multiplexed for UL SDMA or are transmitted individually. An optimal selection of multiplexed signals may be based upon: (1) a cross user interface measurement; and (2) a selection mechanism based on eigen-decomposition techniques. The ULS utility enables a UL scheduler to pair information signals with clear spatial distinction and minimal correlation, based on capacity evaluations. | 02-04-2010 |
| 20100046643 | FEEDFORWARD OF NON-QUANTIZED PRECODING WEIGHTS IN A WIRELESS COMMUNICATIONS SYSTEM - An apparatus and method to feedforward non-quantized precoding weights in an OFDM communication system includes a first step ( | 02-25-2010 |
| 20100056057 | UPLINK INTERFERENCE CONTROL IN A WIMAX COMMUNICATION SYSTEM - An apparatus and method to provide uplink interference control in a WiMAX communication system includes a step | 03-04-2010 |
| 20100142462 | PASSIVE COORDINATION IN A CLOSED LOOP MULTIPLE INPUT MULTIPLE OUT PUT WIRELESS COMMUNICATION SYSTEM - A system and method for passive coordination of base stations in a closed-loop multiple-input multiple-output wireless communication system, includes a first step | 06-10-2010 |
| 20100150266 | METHOD AND APPARATUS FOR CODEBOOK-BASED FEEDBACK IN A CLOSED LOOP WIRELESS COMMUNICATION SYSTEM - A method and apparatus are provided for feedback for closed-loop transmitting with multiple transmit antenna elements and multiple receive antenna elements. A base station includes a codebook containing sets of weightings for the multiple transmit antenna elements, with each set of weightings identified by an index and the codebook known to the base station and a served mobile station (MS). The base station pre-codes pilot signals using a precoding matrix, preferably a unitary matrix, to produce pre-coded pilot signals, which precoding matrix may or may not be known to the MS and which precoding matrix may or may not be included in the codebook. The base station then transmits the pre-coded pilot signals to the MS via the multiple transmit antenna elements and, in response, receives an index to a set of weightings in the codebook for use in a subsequent transmission of a data stream. | 06-17-2010 |
| 20100260234 | CLOSED-LOOP TRANSMISSION FEEDBACK IN WIRELESS COMMUNICATION SYSTEMS - Channel information feedback takes place by calculating channel information to feed back to the base station. The channel quality information is spread by a remote unit with spreading codes from mutually unbiased bases and transmitted to the base station. The advantages of spreading the feedback channel are that multiple mobiles can send their feedback on the same time-frequency resources making the feedback very efficient and also improving feedback performance through orthogonal spreading which gives a spreading gain above noise and interference. Using the spreading codes from mutually unbiased bases can reduce interference across sectors. | 10-14-2010 |
| 20100284482 | METHOD AND APPARATUS FOR RADIO RESOURCE ALLOCATION IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM - In an OFDM communication system, wherein a frequency bandwidth is divided into multiple Physical Resource Units (PRUs), a Frequency Partitioning Configuration Module (FPCM) is provided that configures a physical layer for use in multiple coverage areas. The FPCM divides the PRUs into a first group, for frequency selective allocations, and a second group, for frequency diverse allocations. The FPCM subdivides each of the two groups into multiple sets of PRUs, maps the sets of PRUs from the first group to consecutive PRUs allocated for contiguous segment allocation (CS-PRUs), and maps the sets of PRUs from the second group to consecutive PRUs allocated for distributed segment allocation (DS-PRUs). The FPCM permutes the DS-PRUs and allocates the CS-PRUs and the permuted DS-PRUs to at least one frequency partition. | 11-11-2010 |
