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Paired sounding reference signal transmission in multiple transmit/receive point operation

A technology for sounding reference signals, transmitting and receiving, applied in the directions of duplex signal operation, space transmit diversity, pilot signal allocation, etc., and can solve problems such as defects

Active Publication Date: 2021-09-28
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

conventional techniques for interference management are flawed

Method used

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  • Paired sounding reference signal transmission in multiple transmit/receive point operation
  • Paired sounding reference signal transmission in multiple transmit/receive point operation
  • Paired sounding reference signal transmission in multiple transmit/receive point operation

Examples

Experimental program
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Effect test

Embodiment 1

[0228] Embodiment 1: A method for wireless communication at a user equipment (UE), comprising: transmitting a first sounding reference signal to a first transmit-receive point; receiving from the first transmit-receive point based at least in part on the first a downlink transmission of a sounding reference signal; and transmitting a second sounding reference signal to a second transmit-reception point, the second sounding reference signal precoded to indicate at least one dimension of a received signal space corresponding to the downlink transmission.

Embodiment 2

[0229] Embodiment 2: The method of embodiment 1, wherein transmitting the first sounding reference signal further comprises transmitting the first sounding reference signal from multiple antenna ports, and wherein transmitting the second sounding reference signal further comprises transmitting the first sounding reference signal from at least the multiple antenna ports A subset of ports transmit second sounding reference signals.

Embodiment 3

[0230] Embodiment 3: The method of embodiment 1 or 2, further comprising receiving a second downlink transmission from a second transmit-receive point based at least in part on the second sounding reference signal.

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Abstract

Methods, systems and devices for wireless communications are described. In some cases, a user equipment (UE) may communicate with multiple transmit / receive points (TRPs) using multiple antenna ports, and each antenna port may correspond to a spatial dimension along which wireless communications may be transmitted. The UE may transmit a first sounding reference signal (SRS) to the serving TRP to help the serving TRP determine the subset of spatial dimensions available to the UE along which downlink transmissions may be transmitted. Upon receiving a downlink transmission from a serving TRP along a subset of spatial dimensions determined by the serving TRP, the UE may transmit a second SRS to a neighboring TRP to indicate the subset of spatial dimensions. Neighboring TRPs avoid downlink transmissions to the UE or other UEs along a subset of the spatial dimensions, thereby mitigating interference along the subset of the spatial dimensions.

Description

[0001] Cross References to Related Applications [0002] This patent application claims "PAIRED SOUNDING REFERENCE SIGNAL TRANSMISSIONS IN MULTI-TRANSMISSION / RECEPTION POINT OPERATION" filed on July 29, 2019 by Sridharan et al. U.S. Patent Application No. 16 / 525,343, and entitled "PAIRED SOUNDING REFERENCE SIGNAL TRANSMISSIONS IN MULTI-TRANSMISSION / RECEPTION POINT OPERATION," filed August 2, 2018 Priority of U.S. Provisional Patent Application No. 62 / 713,718 to Sridharan et al., each of which is assigned to its assignee. Background technique [0003] The following relates generally to wireless communications, and more specifically to paired sounding reference signal (SRS) transmissions in multiple transmit / receive point (TRP) operations. [0004] Wireless communication 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 communications for m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04B7/024H04B7/0404H04B7/0452H04B7/0456H04B7/0617H04L5/001H04L5/0023H04L5/0048H04L5/0091H04L5/14H04L5/0064H04B7/0486H04B7/028H04W72/23
Inventor G.斯里达兰J.K.桑达拉拉詹Y.黄杨桅J.B.索里亚加
Owner QUALCOMM INC