CN-122029746-A - Dynamic beam management

Abstract

Various aspects of the present disclosure relate generally to wireless communications. In some aspects, a User Equipment (UE) may receive downlink communications with a receive beam formed using a set of antenna elements. In parallel with receiving downlink communications, the UE may measure a Channel Impulse Response (CIR) for each antenna element in the set of antenna elements in a polling manner. The UE may generate a second receive beam or a transmit beam based at least in part on the CIRs of the set of antenna elements. Numerous other aspects are described.

Inventors

• ZHU JUAN
• R.N. Chara
• WU YONGLE
• GAO KANG
• S. J. Ayer
• S.Patel
• M.L. McClaude
• B.C. Barnett

Assignees

• 高通股份有限公司

Dates

Publication Date

20260512

Application Date

20240927

Priority Date

20231020

Claims (20)

1. 1. An apparatus for wireless communication at a User Equipment (UE), the apparatus 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: Receiving downlink communications using a receive beam formed using a set of antenna elements; in parallel with receiving the downlink communication, measuring a Channel Impulse Response (CIR) for each antenna element in the set of antenna elements in a polling manner, and A second receive beam or transmit beam is generated based at least in part on the CIRs of the set of antenna elements.
2. 2. The apparatus of claim 1, wherein the one or more processors are configured, individually or collectively, to cause the UE to receive the downlink communication with a first Radio Frequency (RF) chain and to measure the CIR for each antenna element with a second RF chain.
3. 3. The apparatus of claim 2, wherein the one or more processors are configured, individually or collectively, to cause the UE to, for each slot: Receiving downlink communications in the time slot using the first RF chain, and The CIR of the downlink communication is measured for an antenna element in the time slot using the second RF chain.
4. 4. The apparatus of claim 1, wherein to measure the CIR, the one or more processors are configured, individually or collectively, to cause the UE to measure the CIR of a demodulation reference signal in downlink communication.
5. 5. The apparatus of claim 1, wherein to measure the CIR for each antenna element in a round robin fashion, the one or more processors are configured to cause the UE to measure the CIR for each antenna element in a time slot, wherein the set of antenna elements are measured in consecutive time slots, and wherein the number of sets of antenna elements is equal to the number of consecutive time slots.
6. 6. The apparatus of claim 1, wherein the one or more processors are configured, individually or collectively, to cause the UE to generate a new receive beam or a new transmit beam in each time slot.
7. 7. The apparatus of claim 1, wherein the one or more processors are configured, individually or collectively, to cause the UE to generate a new receive beam or a new transmit beam based at least in part on one or more eigenvectors of a channel correlation matrix formed by CIRs measured for the set of antenna elements.
8. 8. A method of wireless communication performed by a User Equipment (UE), the method comprising: Receiving downlink communications with a first receive beam formed using a set of antenna elements; in parallel with receiving the downlink communication, measuring a Channel Impulse Response (CIR) for each antenna element in the set of antenna elements in a polling manner, and A second receive beam or transmit beam is generated based at least in part on the CIRs of the set of antenna elements.
9. 9. The method of claim 8, wherein receiving the downlink communication comprises receiving the downlink communication with a first Radio Frequency (RF) chain, and wherein measuring the CIR for each antenna element comprises measuring the CIR for each antenna element with a second RF chain.
10. 10. The method of claim 9, wherein the receiving and the measuring comprise, for each slot: Receiving downlink communications in the time slot using the first RF chain, and The CIR of the downlink communication is measured for an antenna element in the time slot using the second RF chain.
11. 11. The method of claim 8, wherein measuring the CIR comprises measuring the CIR of a demodulation reference signal in downlink communications.
12. 12. The method of claim 8, wherein measuring the CIR for each antenna element in a round robin fashion comprises measuring the CIR for each antenna element in a time slot, wherein the set of antenna elements are measured in consecutive time slots, and wherein the number of sets of antenna elements is equal to the number of consecutive time slots.
13. 13. The method of claim 8, wherein the generating comprises generating a new receive beam or a new transmit beam in each time slot.
14. 14. The method of claim 8, wherein the generating comprises generating a new receive beam or a new transmit beam based at least in part on one or more eigenvectors of a channel correlation matrix formed by CIRs measured for the set of antenna elements.
15. 15. An apparatus for wireless communication, the apparatus comprising: Means for receiving downlink communications using a receive beam formed using a set of antenna elements; Means for measuring a Channel Impulse Response (CIR) for each antenna element of the set of antenna elements in a polling manner in parallel with receiving the downlink communication, and Means for generating a second receive beam or a transmit beam based at least in part on the CIRs of the set of antenna elements.
16. 16. The apparatus of claim 15, wherein the means for receiving the downlink communication comprises means for receiving the downlink communication with a first Radio Frequency (RF) chain, and wherein the means for measuring the CIR for each antenna element comprises means for measuring the CIR for each antenna element with a second RF chain.
17. 17. The apparatus of claim 16, further comprising means for, for each slot: Receiving downlink communications in the time slot using the first RF chain, and The CIR of the downlink communication is measured for an antenna element in the time slot using the second RF chain.
18. 18. The apparatus of claim 15, wherein the means for measuring the CIR comprises means for measuring the CIR of a demodulation reference signal in downlink communications.
19. 19. The apparatus of claim 15, wherein the means for measuring the CIR for each antenna element in a polling manner comprises means for measuring the CIR for each antenna element in a time slot, wherein the set of antenna elements are measured in consecutive time slots, and wherein a number of the sets of antenna elements is equal to the number of consecutive time slots.
20. 20. The apparatus of claim 15, further comprising means for generating a new receive beam or a new transmit beam in each time slot.

Description

Dynamic beam management Cross Reference to Related Applications This patent application claims priority from U.S. patent application Ser. No. 18/491,518, entitled "DYNAMIC BEAM MANAGEMENT (dynamic beam management)" filed on day 10 and 20 of 2023, and assigned to the assignee of the present patent application. The disclosure of the prior application is considered to be part of the present patent application and is incorporated by reference into the present patent application. Technical Field Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for dynamic beam measurement. Background Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access techniques 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 an enhanced set of Universal Mobile Telecommunications System (UMTS) mobile standards promulgated by the third generation partnership project (3 GPP). A wireless network may include one or more network nodes that support communications for wireless communication devices, such as User Equipment (UE) or multiple UEs. The UE may communicate with the network node via downlink and uplink communications. "downlink" (or "DL") refers to the communication link from the network node to the UE, and "uplink" (or "UL") refers to the communication link from the UE to the network node. Some wireless networks may support device-to-device communications, such as via local links (e.g., side Link (SL), wireless Local Area Network (WLAN) link, and/or Wireless Personal Area Network (WPAN) link, etc.). The multiple access techniques described above have been employed in various telecommunications standards to provide a common protocol that enables different UEs to communicate at a city, country, region, and/or global level. The New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3 GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, reducing costs, improving services, exploiting new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the downlink (CP-OFDM), CP-OFDM and/or single carrier frequency division multiplexing (SC-FDM) on the uplink (also known as discrete fourier transform spread OFDM (DFT-s-OFDM)) for better integration with other open standards, and 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. Disclosure of Invention Some aspects described herein relate to a method of wireless communication performed by a User Equipment (UE). The method may include receiving downlink communications with a first receive beam formed using a set of antenna elements. The method may include measuring a Channel Impulse Response (CIR) for each antenna element in the set of antenna elements in a polling manner in parallel with receiving the downlink communication. The method may include generating a second receive beam or a transmit beam based at least in part on the CIRs of the set of antenna elements. Some aspects described herein relate to an apparatus for wireless communication. The apparatus 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 downlink communications with a first receive beam formed using a set of antenna elements. The one or more processors may be configured to measure, in parallel with receiving the downlink communication, a CIR for each antenna element in the set of antenna elements in a polling manner. The one or more processors may be configured to generate a second receive beam or a transmit beam based at least in part on the CIR of the set of antenna elements. Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving downlink communications with a first receive beam formed using a set of antenna elements. The apparatus may include means for measuring a CIR for each antenna element in the set of antenna elements in a polling manner in parallel wi