Abstract:
Techniques for optimized cell acquisition for long term evolution (LTE) time division duplex (TDD) systems or closed subscriber group (CSG)/evolved Multicast Broadcast Multimedia Service (eMBMS) capable user equipments (UEs) are disclosed. A UE obtains configuration information, CSG capability information, and/or eMBMS capability information for a cell. The UE also stores the obtained information for the cell in a cell information database. In some aspects, the UE may employ the CSG and/or eMBMS capability information to select a weaker cell, during initial frequency scan at power up of the UE, based on cell capability. Additionally or alternatively, the UE may employ the configuration information to determine an initial mutual information (Mi) hypothesis value for physical hybrid-automatic repeat request (HART) indicator channel (PHICH) group mapping of the cell. Additionally or alternative, radio link failures and/or out of synch events may be predicted and proactive responses employed based on previously obtained solutions.
Abstract:
Techniques for communication are disclosed. A method may include selecting from a subframe two or more resource elements for control signaling, wherein the subframe includes a plurality of symbol periods and each symbol period includes a plurality of resource elements, wherein the selected two or more resource elements are associated with a concurrent symbol period, and transmitting a resource allocation message to an access terminal, wherein the resource allocation message indicates that the selected two or more resource elements are allocated for control signaling.
Abstract:
Methods and apparatuses for wireless communication are provided. In an aspect, the method includes receiving a plurality of channel quality reports based on a multiple description coding schedule and determining a transmission parameter based on the plurality of channel quality reports. In another aspect, the method includes receiving a family of codebooks organized based on a transmission rank, and reporting, using a multiple description coding scheme, a channel quality parameter using a codebook entry from the family of codebooks.
Abstract:
Bursty interference or puncturing may be identified, either by a user equipment (UE) or by a base station. In response, a protection scheme may be applied to protect communications from the bursty interference or puncturing. The protection scheme may include using both time and frequency interleaving of code blocks in the communications. The protection scheme may also include modifying the modulation and coding scheme (MCS), coding rate, precoding matrix index (PMI), or rank indicator (RI) used in the communications. The protection scheme may also include using a universal low-density parity check (LDPC) code in the transmission of the communications.
Abstract:
Certain aspects of the present disclosure provide a method for wireless communications. The method generally includes allocating resources of a backhaul link between a donor base station and a relay base station to the relay station for communicating with the donor base station and transmitting a control channel indicating the allocated resources to the relay base station, wherein the control channel is transmitted on a subset of physical resource blocks (PRBs) of subframes assigned for downlink communications on the backhaul link.
Abstract:
Methods, systems, and devices are described for a UE to determine a DRX wakeup rule in an eICIC environment. A UE may identify a measurement period associated with reduced interference from one or more cells in a wireless communications network. The cells may be a serving cell or a neighbor cell. The measurement period may be identified based on eICIC data available to the UE. The eICIC data may be sent to the UE by a serving cell and/or determined by the UE. The UE may power up a wireless modem to perform a warm-up measurement of the serving cell during the identified measurement period prior to transitioning the UE to a DRX on state.
Abstract:
In a wireless communication system, carrier aggregation may be used to provide desired amounts of bandwidth, where a primary carrier and one or more secondary carriers are aggregated. At the receive side of a system in which the aggregated carriers are in a single frequency band, an amplifier may be used to apply a common gain to the aggregated carriers in the single frequency band, and the common gain may be determined as a function of indications of received signal quality associated with groups of aggregated carriers containing one or more of the aggregated carriers, where one group contains the primary carrier and possible one or more secondary carriers and another group contains only secondary carriers.
Abstract:
Methods, systems, and devices are described for wireless communication. In one method, a method of wireless communication at a user equipment (UE) includes receiving a synchronization signal. The synchronization signal may be common to a plurality of cells within a network. The method further includes acquiring a timing of the network based on the synchronization signal, and transmitting a pilot signal in response to acquiring the timing of the network. The pilot signal may identify the UE and be concurrently receivable by the plurality of cells within the network. Other aspects, features, and embodiments are also claimed and described.
Abstract:
Techniques are described for wireless communication. A first method includes measuring, by a first device, a condition of a wireless channel; and generating at least one channel side information feedback message based on the measured condition of the wireless channel. The at least one channel side information feedback message provides information on a relationship of a set of parameters, including a data rate parameter, an error probability parameter, and at least one of a deadline parameter or a transmission link parameter. A second method includes measuring, by a first device, interference on a wireless channel; identifying an interfering device for the wireless channel based on the measurement; and generating a channel side information feedback message based on the measured interference on the wireless channel. The channel side information feedback message indicates the interfering device for the wireless channel and a correlation of interference from the interfering device with time or frequency.
Abstract:
Various embodiments implemented on a mobile communication device leverage the availability of a plurality of coexistence mitigation strategies to choose a coexistence mitigation strategy that may be most successful in avoiding and/or mitigating coexistence interference between an aggressor RAT and a victim RAT. In response to determining that a coexistence event between the aggressor RAT and the victim RAT is occurring or is about to occur, a processor on the mobile communication device may determine various priority criteria related to the mobile communication device's current circumstances (e.g., network resources, device resources, etc.) and/or related to each available coexistence mitigation strategy. Using these determined priority criteria, the device processor may select and implement a coexistence mitigation strategy that may be the most suitable for avoiding/mitigating coexistence interference between the aggressor RAT and the victim RAT given the current condition, circumstances, etc. of the mobile communication device.