Abstract:
Methods and corresponding apparatuses for wireless communication are disclosed. The method for wireless communication includes dividing a two-dimensional antenna array to a plurality of sub-arrays, mapping the two-dimensional antenna array into a one-dimensional vertical channel state information reference signal (CSI-RS) port array for receiving elevation CSI feedback and a one-dimensional horizontal CSI-RS port array for receiving azimuth CSI feedback, and transmitting one or more elevation CSI-RS from the one-dimensional vertical CSI-RS port array and one or more azimuth CSI-RS from the one-dimensional horizontal CSI-RS port array. Methods and corresponding apparatuses for CSI feedback mechanism are also disclosed.
Abstract:
A wireless station is disclosed that may quickly enter and/or exit a sleep state and that may reduce power consumption associated with waking up from the sleep state to perform selected low power operations by performing such operations using a set of first instructions stored within an internal memory of the station's processor. If more complex operations such as processing downlink data received from an access point are subsequently desired, then the processor may jump to execution of a set of second instructions stored in an external memory that is coupled to the processor.
Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a sub-band specific sounding reference signal (SRS) resource indicator identifying subsets of SRS resources, of a set of SRS resources, associated with precoding a physical uplink shared channel (PUSCH) communication that is to be transmitted in a PUSCH resource. The user equipment may precode the PUSCH communication based at least in part on the sub-band specific SRS resource indicator. The user equipment may transmit the PUSCH communication after precoding the PUSCH communication based at least in part on the sub-band specific SRS resource indicator. Numerous other aspects are provided.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided. A base station (BS) may configure a component carrier group for a user equipment (UE). The BS may provide an indication of a spatial relation for one or more sounding reference signals associated with a component carrier of the component carrier group. The UE may receive the indication and may apply the spatial relation to the one or more sounding reference signals across bandwidth parts of component carriers of the component carrier group.
Abstract:
An example aspect comprises selecting an azimuth mode for an OAM MIMO transmission by a transmitter that includes a first number of circles that each include a second number of antenna elements, wherein the azimuth mode defines a DFT vector of a size less than or equal to the second number; selecting, from a plurality of radial modes associated with the azimuth mode, a radial mode for the transmission, wherein the radial modes include at least a first radial mode defining a first beamforming vector and a second radial mode defining a second beamforming vector, wherein each one of the first and second beamforming vectors includes the DFT vector weighted and repeated for a number of times less than or equal to the first number, wherein the first and second beamforming vectors are orthogonal to each other; and transmitting a signal using a beam configured according to the radial mode.
Abstract:
Aspects of the present disclosure provide techniques for transmitting an uplink preemption indication in an integrated access and backhaul (IAB) system identifying the resources or symbols that may be punctured by the IAB in order to minimize self-interference at an IAB node when an ultra-reliable-low latency communications (URLLC) packet is received at the IAB node from one of a child IAB node or a user equipment (UE) during an on-going uplink transmission from an IAB node to a parent backhaul node.
Abstract:
Aspects described herein relate to transmitting an indication of a capability to support concurrent or time division multiplexed uplink transmission of at least one of multiple uplink channels across multiple component carriers. In addition, a configuration to transmit over the at least one of the multiple uplink channels over the multiple component carriers using concurrent transmission or time division multiplexed transmission can be received based on the indication.
Abstract:
A method of wireless communication, by a user equipment (UE) supporting a four transmitter/six receiver (4T6R) antenna configuration, reports a sounding reference signal (SRS) switching capability. The method receives an SRS antenna switching configuration, and performs SRS antenna switching while transmitting multiple SRSs via SRS resources with multiple transmitters for different antenna ports, in accordance with the SRS antenna switching configuration. At least one of the different antenna ports may use at least two of the SRS resources. A quantity of the different antenna ports assigned to each SRS resource may be different for the SRS antenna switching. The UE may sound the different antenna ports an equal number of times, and at least one of the different antenna ports may use at least two of the SRS resources for the SRS antenna switching.
Abstract:
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to use one or more channel state information (CSI) omission configurations for omitting portions of a CSI report. For example, a UE may receive a trigger to report CSI, and the UE may identify that a payload of the CSI report exceeds a capacity of resources for transmitting the report. As such, the UE may determine to use one or more CSI omission configurations, where each CSI omission configuration may correspond to dropping different portions of the CSI report. The selection of the CSI omission configuration to use may be based on a set of parameters associated with CSI reporting. In some cases, the UE selects the CSI omission configuration based on an explicit indication from the base station. Additionally or alternatively, the UE may implicitly determine the CSI omission configuration based on the parameters.
Abstract:
Methods, systems, and devices for wireless communications are described. In one aspect, the described techniques provide for identifying interference signals on multiple layers or resources and determining whether the interference signals transmitted on a particular layer or resource were precoded using linear precoding (LP) or NLP. In this aspect, a receiving device may equalize signals received from a transmitting device (e. g., filter out interference signals) based on determining whether the interference signals were precoded using a first type of precoding (e. g., linear precoding (LP)) or a second type of precoding (e. g., NLP). In another aspect, the described techniques provide for performing interference measurements on signals precoded using NLP based on categorizing interference resources as being precoded using LP or NLP. In this aspect, a receiving device may perform and report measurements differently for interference signals precoded using LP and interference signals precoded using NLP.