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EP-4736356-A1 - JOINT CHANNEL STATE INFORMATION REPORTING ASSOCIATED WITH MULTIPLE ANALOG BEAMS

EP4736356A1EP 4736356 A1EP4736356 A1EP 4736356A1EP-4736356-A1

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information associated with reporting joint channel state information (CSI) associated with a plurality of CSI reference signals (CSI-RSs). The UE may receive the plurality of CSI-RSs associated with a plurality of CSI-RS resources. The UE may transmit a reporting communication based on the configuration information and the plurality of CSI-RSs, the reporting communication comprising the joint CSI associated with the plurality of CSI-RSs, wherein a report overhead associated with a CSI-RS of the plurality of CSI-RSs is based on a CSI measurement associated with the plurality of CSI-RSs. Numerous other aspects are described.

Inventors

  • DAI, JING
  • WEI, CHAO
  • WU, Liangming
  • HUANG, MIN
  • XU, HAO

Assignees

  • QUALCOMM Incorporated

Dates

Publication Date
20260506
Application Date
20230630

Claims (20)

  1. A user equipment (UE) for wireless communication, comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors individually or collectively configured to cause the UE to: receive configuration information associated with reporting joint channel state information (CSI) associated with a plurality of CSI reference signals (CSI-RSs) ; receive the plurality of CSI-RSs associated with a plurality of CSI-RS resources; and transmit a reporting communication based on the configuration information and the plurality of CSI-RSs, the reporting communication comprising the joint CSI associated with the plurality of CSI-RSs, wherein a report overhead associated with a CSI-RS of the plurality of CSI-RSs is based on a CSI measurement associated with the plurality of CSI-RSs.
  2. The UE of claim 1, wherein each CSI-RS of the plurality of CSI-RSs is associated with an analog beam of a plurality of analog beams.
  3. The UE of claim 1, wherein the joint CSI comprises a plurality of CSI reports, each CSI report of the plurality of CSI reports corresponding to a respective CSI-RS of the plurality of CSI-RSs.
  4. The UE of claim 3, wherein the plurality of CSI reports is associated with at least one of a plurality of jointly-selected spatial domain (SD) bases or a plurality of jointly-selected non-zero coefficients (NZCs) , wherein each CSI report of the plurality of CSI reports is associated with a respective subset of SD bases of the plurality of jointly-selected SD bases or a respective subset of NZCs of the plurality of jointly-selected NZCs.
  5. The UE of claim 4, wherein the configuration information indicates a total quantity of jointly-selected SD bases, and wherein the reporting communication indicates a selection value associated with selection of the plurality of jointly-selected SD bases in association with the total quantity of jointly-selected SD bases.
  6. The UE of claim 5, wherein the selection value indicates a quantity of the respective subset of SD bases, of the plurality of jointly-selected SD bases, for a CSI report of the plurality of CSI reports, wherein the reporting communication indicates selection of each subset of SD bases of the plurality of jointly-selected SD bases.
  7. The UE of claim 5, wherein the selection value indicates selection of the total quantity of jointly-selected SD bases of the plurality of jointly-selected SD bases.
  8. The UE of claim 5, wherein the selection value comprises a layer-common selection value.
  9. The UE of claim 5, wherein the selection value comprises a CSI-RS resource indicator.
  10. The UE of claim 5, wherein the selection value indicates, for each CSI report of a set of CSI reports including the plurality of CSI reports, a respective CSI-RS selection status.
  11. The UE of claim 4, wherein the configuration information indicates a total quantity of jointly-selected NZCs, and wherein the reporting communication indicates a selection value associated with selection of the plurality of jointly-selected NZCs in association with the total quantity of NZCs.
  12. The UE of claim 4, wherein, based on a selected quantity of the respective subset of SD bases comprising one SD basis, the joint CSI comprises type-I CSI.
  13. The UE of claim 3, wherein the reporting communication indicates a common strongest coefficient indication for the plurality of CSI reports.
  14. The UE of claim 3, wherein the reporting communication indicates, for each CSI report of the plurality of CSI reports, at least one of a respective strongest coefficient indication, a respective spatial-domain oversampling group index, or a respective rank.
  15. The UE of claim 3, wherein each CSI report of the plurality of CSI reports is associated with a plurality of separately-selected frequency domain (FD) bases, and wherein the configuration information indicates a total quantity of FD bases for each CSI report of the plurality of CSI reports, and wherein the reporting communication indicates a selection value associated with selection of the plurality of separately-selected FD bases in association with the total quantity of FD bases.
  16. The UE of claim 3, wherein the plurality of CSI-RS resources are non-overlapping in a time domain.
  17. The UE of claim 1, wherein the reporting communication indicates, for each CSI-RS of the plurality of CSI-RSs, a respective channel quality indicator (CQI) .
  18. The UE of claim 17, wherein the respective CQI comprises a wideband CQI, and wherein the reporting communication indicates, for each subband of a plurality of subbands associated with the wideband CQI, a differential CQI.
  19. The UE of claim 18, wherein the respective CQI comprises a differential wideband CQI.
  20. The UE of claim 19, wherein the reporting communication indicates a common wideband CQI associated with a reference CSI-RS of the plurality of CSI-RSs, wherein the reporting communication indicates, for each subband of a plurality of subbands associated with a set of remaining CSI-RSs, a differential CQI relative to the common wideband CQI, the set of remaining CSI-RSs comprising each CSI-RS of the plurality of CSI-RSs that is not the reference CSI-RS.

Description

JOINT CHANNEL STATE INFORMATION REPORTING ASSOCIATED WITH MULTIPLE ANALOG BEAMS FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for joint channel state information reporting associated with multiple analog beams. BACKGROUND Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like) . Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) . LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) . A wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL” ) refers to a communication link from the network node to the UE, and “uplink” (or “UL” ) refers to a communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL) , a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples) . The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs  to communicate on a municipal, national, regional, and/or global level. New Radio (NR) , which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY Some aspects described herein relate to a user equipment (UE) for wireless communication. The UE may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to receive configuration information associated with reporting joint channel state information (CSI) associated with a plurality of CSI reference signals (CSI-RSs) . The one or more processors may be configured to receive the plurality of CSI-RSs associated with a plurality of CSI-RS resources. The one or more processors may be configured to transmit a reporting communication based on the configuration information and the plurality of CSI-RSs, the reporting communication comprising the joint CSI associated with the plurality of CSI-RSs, wherein a report overhead associated with a CSI-RS of the plurality of CSI-RSs is based on a CSI measurement associated with the plurality of CSI-RSs. Some aspects described herein relate to a network node for wireless communication. The network node may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to transmit configuration information associated with reporting joint CSI associated with a plurality of CSI-RSs. The one or more processors may be configured to transmit the plurality of CSI-RSs associated with a plurality of CSI-RS resources. The one or more processors may be configured to receive a reporting  communication based on the configuration information and the plurality of CSI-RSs, the reporting communication comprising the joint CSI associated with the plurality of CSI-RSs, wherein a report overhead associated with a CSI-RS of the plurality of CSI-RSs is based on a CSI measurement associated with the plurality of CSI-RSs. Some aspects described herein relate to a method of wireless communication