Patent application number | Description | Published |
20090201839 | METHODS AND APPARATUS FOR REDUCING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEMS - In accordance with a method for reducing interference in a wireless communication system, information about at least one disallowed beam corresponding to at least one served user may be determined. Scheduling decisions for served users may be made so as to avoid transmissions via the at least one disallowed beam. Data may be transmitted to users in accordance with the scheduling decisions. | 08-13-2009 |
20090201903 | SYSTEMS AND METHODS FOR DISTRIBUTED BEAMFORMING BASED ON CARRIER-TO-CAUSED INTERFERENCE - In accordance with a method for distributed beamforming based on carrier to caused interference, a base station may receive channel state information from users. The base station may select a codeword from a codebook. The codeword may be selected so as to maximize a utility function that is based on a signal-to-caused-interference-plus-noise ratio. The base station may use the codeword for beamforming. | 08-13-2009 |
20100329369 | METHOD AND APPARATUS FOR FACILITATING MULTI-USER JOINT TRANSMIT-RECEIVE BEAMFORMING - A method of wireless communication is disclosed that includes receiving detected channel information from a plurality of access terminals; selecting a set of access terminals from the plurality of access terminals based on the received channel information; creating a beamforming vector for each access terminal in the set of selected access terminals; and transmitting a signal using at least one of the created beamforming vectors. An apparatus for performing the method is also disclosed herein. | 12-30-2010 |
20110035647 | Broadband satellite system for the simultaneous reception of multiple channels using shared iterative decoder - Multiple channels of received data are processed by a multiple channel demodulation and error correction decoding engine. The statistical uncertainty of processing channels with an iterative decoder are averaged across all the channels to reduce the total processing power required of the decoding engine compared to processing each channel with a separate engine. A set of input buffers holds blocks of data for each channel needing decoding. A quality measure is computed on each input block to set the priority and iteration allocation of decoding in the common decoder. The input RF signal is digitized by a broadband tuner that processes some or all of the channels to feed the multiple channel demodulator and decoder. Multiple decoded video data streams are output. | 02-10-2011 |
20110310858 | BEACON SIGNALING METHOD AND APPARATUS - Systems and methods are described herein for managing beacon signaling in a wireless communication system. A method described herein includes identifying a neighboring macrocell and a time division multiplexing (TDM) channel offset of the neighboring macrocell, the channel offset corresponding to at least one of a signaling channel or an overhead channel; selecting a local channel offset that differs from the channel offset of the neighboring macrocell; and generating a transmission schedule such that first transmissions are omitted for at least a portion of transmission intervals of the neighboring macrocell; wherein the transmission intervals of the neighboring macrocell are identified according to the channel offset of the neighboring macrocell and wherein the first transmissions include at least one of pilot transmissions, medium access control (MAC) transmissions or traffic transmissions. | 12-22-2011 |
20120263164 | METHODS AND APPARATUS FOR ADJUSTING FORWARD LINK SIGNAL TO INTERFERENCE AND NOISE RATIO ESTIMATES - Methods and systems for adjusting a forward link (FL) signal to interference and noise ratio (SINR) are provided. In an example, a FL SINR is estimated for each user in a plurality of users, on at least one of each user's respective data rate control (DRC) message or each user's respective prior FL SINR value. The respective estimated FL SINR for a user in the plurality of users is increased, if, based on a reverse link acknowledge message, the user has decoded a packet before all symbols in the packet have been transmitted. Remaining control channel power is determined. The estimated FL SINR for all users in the plurality of users is increased if remaining control channel power is less than a low threshold. The estimated FL SINR for all users in the plurality of users is increased if the remaining control channel power is greater than a high threshold. | 10-18-2012 |
20130028293 | TIME-SHARED AND CONCURRENT MULTI-PROTOCOL BEACON TRANSMISSION DESIGN - A base station in a cellular wireless communications system uses one or more control algorithms to control a transmission pattern of a 1xRTT or DO discovery beacon. The transmission pattern enables access terminals using any one of multiple wake-up periods and wake-up offsets to discover all macrocell frequencies in a finite amount of time. In addition, for base stations allocating a single transmit chain to both 1xRTT and DO beacons, the transmission pattern enables a definite maximum discovery time for both 1xRTT and DO beacons for all access terminals entering the base station coverage. | 01-31-2013 |
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 |
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 |
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 |
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 |
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 |