Abstract:
Methods, systems, and devices for wireless communications are described that provide for receive chain selection at a user equipment (UE) with efficient switching between a reduced number of receive chains and an increased number of receive chains for downlink communications based on conditions at the UE. A UE may adaptively adjust the number of active receive chains based on downlink grant activity, channel conditions, network parameters, or any combinations thereof. An estimator block at the UE may determine to adjust the number of receive chains based on a number of downlink grants within one or more time periods. In some cases, grants for an amount of data that exceeds a threshold may be qualified in order to be counted at the estimation block. Further, a transient state may be provided where the UE may maintain a higher number of active receive chains until UE feedback is provided.
Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive an indication of whether a first physical downlink shared channel (PDSCH) communication is to be punctured in a set of resources in which a second PDSCH communication at least partially overlaps with the first PDSCH communication, or both the first PDSCH communication and the second PDSCH communication are to be transmitted in the set of resources. The mobile station may decode the first PDSCH communication based at least in part on the indication. Numerous other aspects are provided.
Abstract:
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) transmits capability information indicating a maximum number of downlink resources for both positioning reference signal (PRS) resources and downlink resources for one or more second downlink channels or signals that the UE is capable of processing per unit of time, receives, from a serving transmission-reception point (TRP), a configuration of one or more downlink resources for the one or more second downlink channels or signals, wherein a number of the one or more downlink resources is less than the maximum number, and receives, from a location server, a configuration of one or more PRS resources for the serving TRP, one or more neighboring TRPs, or both, wherein a number of the one or more PRS resources is less than the maximum number.
Abstract:
Techniques for wireless communications are described. A user equipment (UE) may initially configure a set of channel estimation parameters for a set of radio frequency spectrum subbands of a bandwidth part (BWP) of a transmission opportunity (TxOP). In some examples, the UE may identify an unavailable radio frequency spectrum subband within the BWP. Based on the identification, the UE may reconfigure the channel estimation parameters to avoid performing unnecessary channel estimation processes on the unavailable radio frequency spectrum subband. As part of reconfiguring the channel estimation parameters, the UE may set log-likelihood ratio (LLR) values of subcarriers associated with the unavailable radio frequency spectrum subband to a null value, thereby experiencing improvements in efficiency and reliability of channel estimation for the BWP.
Abstract:
Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may transmit assistance information to a base station to request an update or a modification to one or more communication parameters configured at the UE. Such communication parameters may include a quantity of uplink multiple-input multiple-output (MIMO) layers, a quantity of downlink MIMO layers, a minimum scheduling offset, a maximum quantity of component carriers, or a maximum aggregated bandwidth for a secondary cell group (SCG). In some implementations, the UE may transmit the assistance information requesting the update or modification to one or more of such communication parameters based on detecting that the UE satisfies one or more triggering conditions or thresholds.
Abstract:
Apparatus, methods, and computer program products for serving cell measurement based on CSI-RS RRM are provided. An example apparatus may transmit, to a base station, an indication indicating support for reporting one or more serving cell channel state information reference signal (CSI-RS) radio resource management (RRM) measurements independent of non-serving cell CSI-RS RRM measurements. The example apparatus may receive, from the base station, a configuration of layer 3 measurement resources. The example apparatus may perform, based on the configuration of the layer 3 measurement resources, the one or more serving cell CSI-RS RRM measurements. The example apparatus may transmit, to the base station, the one or more serving cell CSI-RS RRM measurements for a serving cell.
Abstract:
Aspects described herein relate to configuring devices with multiple uplink grants, where the devices may be able to determine whether to interrupt communications of one uplink grant for communications of another uplink grant.
Abstract:
Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.
Abstract:
Enabling resource partitioning in a wireless communication is provided. A terminal can measure channel quality and other information in a wireless communication environment and prepare a VCQI report. The report can be transmitted to a serving base station and/or non-serving base stations. The report information can be utilized by the base stations to allocate resources and/or to facilitate handoff within the wireless communication environment.