Abstract: Embodiments disclosed herein relate to carrier allocation and management in multi-carrier communication systems. In some embodiments, the number of carriers assigned to an access terminal on a forward link may be determined by an access network, and the number of carriers assigned to the access terminal on a reverse link may be based on a cooperative process between the access terminal and the access network. In other embodiments, the number of carriers assigned to the access terminal on the reverse link may also be determined by the access network, e.g., in relation to the scheduling information received from the access terminal.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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. The transceiver can transmit the selective acknowledgement message with an identifier assigned to the wireless node to allow tracking of a response. Other aspects, embodiments, and features are also claimed and described.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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. The transceiver can transmit the selective acknowledgement message with an identifier assigned to the wireless node to allow tracking of a response. Other aspects, embodiments, and features are also claimed and described.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: In a wireless communication system where different frequency bands are deployed to generate various communication zones, pilot signal set management for a plurality of pilot signals generated from an additional coverage zone is based on identifying a preselected signal set from the plurality of pilot signals and determining whether a predetermined criterion is met.

Abstract: This disclosure describes techniques for simulating liquid flow. The techniques for simulating liquid flow may involve generating provisional particle positions based on one or more physical forces, and modifying the provisional particle positions based on one or more target densities for the particles. For example, the provisional particle positions may be modified based on a function that defines an aggregate density deviation for the particles as a function of current particle positions for the particles and one or more target densities for the particles. The liquid flow techniques of this disclosure may allow an incompressible liquid flow to be realistically simulated with reduced computational and/or power requirements relative to simulators that solve or approximate solutions to Navier-Stokes equations, thereby making such techniques particularly useful for simulating liquid flows in power-limited and/or computational resource-limited devices (e.g., mobile phones).

Abstract: 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.