Abstract:
A user equipment (UE) sends random access request and scheduling requests for channels, such as a physical random access channel (PRACH) and a random access uplink control channel (E-RUCCH), in parallel rather than serially to improve data transmission latency. In one instance, the UE transmits a first preamble for a random access procedure and a second preamble for a scheduling request in response to receiving a hard-handover command. The UE receives a first acknowledgment response to one of the preambles. The UE determines when to transmit the scheduling request based at least in part on which preamble is acknowledged.
Abstract:
In baton handover in TD-SCDMA communications, a user equipment (UE) may use of a single receiver to reduce call drops during baton handover. Following uplink handover, the UE may simultaneously receive downlink communication from a target cell and a source cell when a condition is satisfied. If the UE measures a signal quality of the downlink communication of the target cell greater than a signal quality of the downlink communication of the source cell, the UE switches to the target cell and completes the handover. If the UE measures a signal quality of the downlink communication of the source cell greater than a signal quality of the downlink communication of the target cell, the UE returns the uplink to the source cell and terminates the handover. Thus the UE may avoid handover to a target cell with poor signal quality.
Abstract:
A user equipment (UE) may adjust its uplink transmission power and timing for communications with a target cell while awaiting completion of a baton handover procedure. The amount of adjustments for the uplink transmission power/timing may be based on an amount of time remaining before baton handover failure is declared. The steps size of the adjustments may increase as the time remaining before handover failure becomes smaller.
Abstract:
A method of wireless communication includes modifying an initial transmit power for a subsequent uplink physical channel based on the difference between the desired received powers of the subsequent uplink physical channel and a random access physical channel. When the difference between the desired power of the subsequent uplink physical channel and the random access physical channel is above a predefined threshold, the modification is based on a first adjusted factor. When the subsequent uplink physical channel and random access physical channel are on different frequencies (or time slots) the modification is based on a second adjusted factor.
Abstract:
A method of wireless communication includes receiving a list of neighbor cells and determining whether each of the neighbor cells in the list of neighbor cells has a path loss below a threshold value. The method also includes calculating a serving neighbor path loss (SNPL) based on a serving cell and only the neighbor cells having path loss below the threshold value.
Abstract:
Method and apparatus to efficiently establish a fast call recovery based on an occurrence of an uplink radio link failure. The apparatus monitors for an uplink radio link failure condition between the UE and a network entity. The apparatus terminates a connection with the network entity based on a detection of the uplink radio link failure condition. The apparatus reestablishes a new connection on a same frequency or a different frequency with the network entity or a second network entity. The apparatus transmits an uplink radio link failure report with an uplink failure cause value based on the uplink radio link failure condition.
Abstract:
A method of wireless communication by a user equipment (UE) includes receiving, from a serving cell, information to assist the UE with interference cancellation of at least one neighbor cell. The method also includes performing interference cancellation based on the information. A method of wireless communication by a network device includes obtaining information to enable interference cancellation of a neighbor cell. The method also includes transmitting the information to assist a user equipment (UE) with interference cancellation of the neighbor cell.
Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit, to a base station, assistance information that indicates a packet data convergence protocol (PDCP) preference for multiple connectivity communications from a master node and one or more secondary nodes; and receive, from the base station, a communication that indicates a routing of a sequence of PDCP packages across the master node and one or more active secondary nodes. Numerous other aspects are provided.
Abstract:
Methods related to wireless communication systems and uplink (UL) rank adaptation are provided. A user equipment (UE) receives, from a base station (BS), a configuration indicating a resource associated with a plurality of UL reference signal ports. The UE determines, based on at least one of an overheating status, a throughput, or a latency, a quantity of transmission layers for a transmission. The UE transmits, to the BS, an indication of at least one of (1) one or more UL reference signal ports of the plurality of UL reference signal resources associated with the UL reference signal resource based on the quantity of transmission layers, or (2) a number of UL reference signal ports associated with the multi-port UL reference signal resource based on the quantity of transmission layers.
Abstract:
Certain aspects of the present disclosure provide techniques for slot aggregation configuration with user equipment (UE) assistance information. A method that may be performed by a UE may include transmitting, to a base station (BS), assistance information indicating a preferred repetition factor. The method generally includes receiving an indication from the BS of a repetition factor. The BS can determine the repetition factor for the UE based, at least in part, on the assistance information and indicate the determined repetition factor to the UE.