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US-20260129643-A1 - USER EQUIPMENT UPLINK BEAM REPORTING IN WIRELESS COMMUNICATIONS

US20260129643A1US 20260129643 A1US20260129643 A1US 20260129643A1US-20260129643-A1

Abstract

Methods, systems, and devices for wireless communications are described that provide for updated uplink beam reports from a user equipment (UE). A UE may detect a changed condition associated with uplink communications, and may transmit a request for an update of a beam report to provide one or more uplink parameters. Such a UE may detect one or more changed conditions, such as due to a changed uplink beam pattern or uplink power backoff, and may request to update an uplink beam report or both an uplink and downlink beam report. A network entity may receive the request, and transmit an indication to the UE of an uplink resource for transmission of the uplink beam report, and the UE may transmit the uplink beam report using the indicated uplink resource.

Inventors

  • Kiran Venugopal
  • Yan Zhou
  • Tao Luo
  • Raghu Narayan Challa
  • Ruhua HE

Assignees

  • QUALCOMM INCORPORATED

Dates

Publication Date
20260507
Application Date
20241107

Claims (20)

  1. 1 . A user equipment (UE), comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to: receive configuration information that indicates the UE can transmit a request to provide an uplink measurement report for one or more uplink parameters associated with an uplink channel between the UE and a network entity; transmit the request to provide the uplink measurement report in accordance with a change in at least one of the one or more uplink parameters relative to a prior uplink measurement report; receive a resource allocation for transmission of the uplink measurement report; and transmit the uplink measurement report using uplink resources indicated in the resource allocation.
  2. 2 . The UE of claim 1 , wherein the one or more uplink parameters include a beam pattern of an uplink beam, an uplink power backoff at the UE for uplink transmissions via one or more uplink beams, a set of available uplink antenna ports at the UE, or any combination thereof.
  3. 3 . The UE of claim 1 , wherein the request to provide the uplink measurement report indicates a request to provide both the uplink measurement report and a downlink measurement report.
  4. 4 . The UE of claim 1 , wherein the request to provide the uplink measurement report is indicated by a request field in an uplink control information transmission, a configured uplink control channel resource, one or more request bits of a downlink beam measurement report, an uplink random access channel resource, an uplink random access channel preamble, or any combination thereof.
  5. 5 . The UE of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to: transmit a capability indication that indicates a UE capability to request to transmit the uplink measurement report.
  6. 6 . The UE of claim 1 , wherein the configuration information indicates that the request is to be transmitted using one or more of an uplink control information transmission, a scheduling request, a random access message using a random access resource configured for transmitting the request, or a random access preamble that indicates the request.
  7. 7 . The UE of claim 1 , wherein the resource allocation is received in a downlink control information message that indicates an uplink resource for transmission of the uplink measurement report, and the downlink control information message has a format associated with the uplink measurement report.
  8. 8 . The UE of claim 1 , wherein the request is transmitted in a random access message, and the resource allocation is received in a random access response that indicates an uplink resource for the uplink measurement report.
  9. 9 . The UE of claim 1 , wherein the resource allocation is a first resource allocation of a plurality of resource allocations configured prior to transmission of the request, and the first resource allocation is within a configured duration subsequent to transmitting the request to provide the uplink measurement report.
  10. 10 . The UE of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to: determine at least a first uplink measurement value of at least a first uplink parameter of the one or more uplink parameters to include in the uplink measurement report in accordance with one or more of a measurement of a downlink reference signal, an offset associated with the measurement, or assistance information received from the network entity for the first uplink parameter.
  11. 11 . The UE of claim 1 , wherein the uplink measurement report includes one or more of an uplink reference signal received power (RSRP) estimation that is in accordance with a downlink RSRP measurement of a reference signal, a nominal or maximum uplink transmit power of the UE, an offset value, a maximum permissible exposure (MPE) metric, a power headroom value, an uplink signal to interference and noise ratio (SINR), or an uplink throughput value.
  12. 12 . The UE of claim 1 , wherein the uplink measurement report includes an uplink reference signal received power (RSRP) estimation that is in accordance with a downlink pathloss estimate derived from a downlink reference signal and an uplink transmit power of the UE.
  13. 13 . A network entity, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the network entity to: transmit, to a user equipment (UE), configuration information that indicates the UE can transmit a request to provide an uplink measurement report for one or more uplink parameters associated with an uplink channel between the UE and a network entity; receive, from the UE, the request to provide the uplink measurement report; transmit a resource allocation to the UE for transmission of the uplink measurement report; and receive the uplink measurement report using uplink resources indicated in the resource allocation.
  14. 14 . The network entity of claim 13 , wherein the one or more uplink parameters include a beam pattern of an uplink beam, an uplink power backoff at the UE for uplink transmissions via one or more uplink beams, a set of available uplink antenna ports at the UE, or any combination thereof.
  15. 15 . The network entity of claim 13 , wherein the request to provide the uplink measurement report indicates a request to provide both the uplink measurement report and a downlink measurement report.
  16. 16 . The network entity of claim 13 , wherein the request to provide the uplink measurement report is indicated by a request field in an uplink control information transmission, a configured uplink control channel resource, one or more request bits of a downlink beam measurement report, an uplink random access channel resource, an uplink random access channel preamble, or any combination thereof.
  17. 17 . The network entity of claim 13 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the network entity to: receive, from the UE, a capability indication that indicates a UE capability to request to transmit the uplink measurement report.
  18. 18 . The network entity of claim 13 , wherein the configuration information indicates that the request is to be transmitted by the UE using one or more of an uplink control information transmission, a scheduling request, a random access message using a random access resource configured for transmitting the request, or a random access preamble that indicates the request.
  19. 19 . The network entity of claim 13 , wherein the resource allocation is transmitted in a downlink control information message that indicates an uplink resource for transmission of the uplink measurement report, and the downlink control information message has a format associated with the uplink measurement report.
  20. 20 . The network entity of claim 13 , wherein the request is received in a random access message, and the resource allocation is transmitted in a random access response that indicates an uplink resource for the uplink measurement report.

Description

TECHNICAL FIELD The following relates to wireless communications, including user equipment uplink beam reporting in wireless communications. DESCRIPTION OF THE RELATED TECHNOLOGY Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (for example, time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE). SUMMARY The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein. One innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication. The method includes receiving configuration information that indicates the UE can transmit a request to provide an uplink measurement report for one or more uplink parameters associated with an uplink channel between the UE and a network entity, transmitting the request to provide the uplink measurement report in accordance with a change in at least one of the one or more uplink parameters relative to a prior uplink measurement report, receiving a resource allocation for transmission of the uplink measurement report, and transmitting the uplink measurement report using uplink resources indicated in the resource allocation. Another innovative aspect of the subject matter described in this disclosure can be implemented in a UE for wireless communication. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the UE to receive configuration information that indicates the UE can transmit a request to provide an uplink measurement report for one or more uplink parameters associated with an uplink channel between the UE and a network entity, transmit the request to provide the uplink measurement report in accordance with a change in at least one of the one or more uplink parameters relative to a prior uplink measurement report, receive a resource allocation for transmission of the uplink measurement report, and transmit the uplink measurement report using uplink resources indicated in the resource allocation. Another innovative aspect of the subject matter described in this disclosure can be implemented in a UE for wireless communication. The UE may include means for receiving configuration information that indicates the UE can transmit a request to provide an uplink measurement report for one or more uplink parameters associated with an uplink channel between the UE and a network entity, means for transmitting the request to provide the uplink measurement report in accordance with a change in at least one of the one or more uplink parameters relative to a prior uplink measurement report, means for receiving a resource allocation for transmission of the uplink measurement report, and means for transmitting the uplink measurement report using uplink resources indicated in the resource allocation. Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium storing code for wireless communication. The code may include instructions executable by one or more processors to receive configuration information that indicates a UE can transmit a request to provide an uplink measurement report for one or more uplink parameters associated with an uplink channel between the UE and a network entity, transmit the request to provide the uplink measurement report in accordance with a change in at least one of the one or more uplink parameters relative to a prior uplink measurement report, receive a resource allocation for transmission of the uplink measurement report, and transmit the uplink measurement report using uplink resources indicated in the resource allocation. In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more uplink parameters include a beam pattern