Sparse reference signal-related signaling apparatus and methods

Patent metadata

Field	Value
Publication number	US-2022158795-A1
Application number	US-202217589128-A
Country	US
Kind code	A1
Filing date	Jan 31, 2022
Priority date	Aug 30, 2019
Publication date	May 19, 2022
Grant date	—

Abstract

Sparse reference signal-related signaling, for a wireless channel that is associated with multiple antenna ports, is communicated with a User Equipment (UE). The sparse reference signal-related signaling is consistent with a sparse signaling pattern. In an embodiment, the sparse signaling pattern includes reference signal-related signaling associated with each of the antenna ports, and has been determined based on previous reference signal-related signaling previously communicated with the UE or another UE. In another embodiment, the sparse reference signal-related signaling is consistent with a varying sparse signaling pattern that is based on previous reference signal-related signaling previously communicated with the UE or another UE.

First claim

1 . A method performed by network equipment in a wireless communication network, the method comprising:
communicating, with a User Equipment (UE), sparse reference signal-related signaling for a wireless channel that is associated with multiple antenna ports, the sparse reference signal-related signaling being consistent with a sparse signaling pattern, the sparse signaling pattern including reference signal-related signaling associated with each of the antenna ports, and the sparse signaling pattern having been determined based on previous reference signal-related signaling previously communicated with the UE or another UE.

2 . The method of claim 1 , further comprising:
receiving the previous reference signal-related signaling; determining the sparse signaling pattern based on the previous reference signal-related signaling.

3 . The method of claim 2 , wherein the determining comprises:
determining, based on the previous reference signal-related signaling, correlations between the antenna ports; determining the sparse signaling pattern based on the correlations.

4 . The method of claim 2 , wherein the receiving comprises receiving the previous reference signal-related signaling for offline operation that is separate from reference signal-related signaling for communications with the UE or the other UE, or the receiving comprises receiving the previous reference signal-related signaling for online operation that is associated with communications with the UE or the other UE.

5 . The method of claim 1 , wherein the reference signal-related signaling comprises a Channel State Information Reference Signal (CSI-RS) associated with each of the antenna ports and UE feedback corresponding to each CSI-RS, and wherein the communicating comprises:
transmitting to the UE the CSI-RS associated with each of the antenna ports; receiving from the UE the feedback corresponding to each CSI-RS.

6 . The method of claim 1 , wherein the reference signal-related signaling comprises a Demodulation Reference Signal (DM-RS) associated with each of the antenna ports, and wherein the communicating comprises transmitting to the UE the DM-RS associated with each of the antenna ports.

7 . The method of claim 1 , wherein the communicating comprises transmitting the sparse reference signal-related signaling to the UE, the method further comprising:
transmitting to the UE one or more parameters for prediction of the wireless channel based on the sparse reference signal-related signaling.

8 . Network equipment for a wireless communication network, the network equipment comprising:
a plurality of antennas associated with multiple antenna ports; a processor coupled to the plurality of antennas; and a processor-readable memory, coupled to the processor, and storing processor-executable instructions which, when executed by the processor, cause the processor to perform a method comprising: communicating, with a User Equipment (UE), sparse reference signal-related signaling for a wireless channel that is associated with the multiple antenna ports, the sparse reference signal-related signaling being consistent with a sparse signaling pattern, the sparse signaling pattern including reference signal-related signaling associated with each of the antenna ports, and the sparse signaling pattern having been determined based on previous reference signal-related signaling previously communicated with the UE or another UE.

9 . The network equipment of claim 8 , the processor-executable instructions, when executed by the processor, further causing the processor to:
receive the previous reference signal-related signaling; determine the sparse signaling pattern based on the previous reference signal-related signaling.

10 . The network equipment of claim 9 , the processor-executable instructions, when executed by the processor, further causing the processor to determine the sparse signaling pattern based on the previous reference signal-related signaling by:
determining, based on the previous reference signal-related signaling, correlations between the antenna ports; determining the sparse signaling pattern based on the correlations.

11 . The network equipment of claim 9 , the processor-executable instructions, when executed by the processor, causing the processor to receive the previous reference signal-related signaling for offline operation that is separate from reference signal-related signaling for communications with the UE or the other UE, or to receive the previous reference signal-related signaling for online operation that is associated with communications with the UE or the other UE.

12 . The network equipment of claim 8 , wherein the reference signal-related signaling comprises a Channel State Information Reference Signal (CSI-RS) associated with each of the antenna ports and UE feedback corresponding to each CSI-RS, and wherein the communicating comprises:
transmitting to the UE the CSI-RS associated with each of the antenna ports; receiving from the UE the feedback corresponding to each CSI-RS.

13 . The network equipment of claim 8 , wherein the reference signal-related signaling comprises a Demodulation Reference Signal (DM-RS) associated with each of the antenna ports, and wherein the communicating comprises transmitting to the UE the DM-RS associated with each of the antenna ports.

14 . The network equipment of claim 8 , wherein the communicating comprises transmitting the sparse reference signal-related signaling to the UE, the processor-executable instructions, when executed by the processor, further causing the processor to:
transmit to the UE one or more parameters for prediction of the wireless channel based on the sparse reference signal-related signaling.

15 . A processor-readable memory storing processor-executable instructions which, when executed by a processor in network equipment in a wireless communication network, cause the processor to perform a method comprising:
communicating, with a User Equipment (UE), sparse reference signal-related signaling for a wireless channel that is associated with the multiple antenna ports, the sparse reference signal-related signaling being consistent with a sparse signaling pattern, the sparse signaling pattern including reference signal-related signaling associated with each of the antenna ports, and the sparse signaling pattern having been determined based on previous reference signal-related signaling previously communicated with the UE or another UE.

16 . A method performed by a User Equipment (UE) in a wireless communication network, the method comprising:
communicating, with network equipment in the wireless communication network, sparse reference signal-related signaling for a wireless channel that is associated with multiple antenna ports of the network equipment, the sparse reference signal-related signaling being consistent with a sparse signaling pattern, the sparse signaling pattern including reference signal-related signaling associated with each of the antenna ports, and the sparse signaling pattern having been determined based on previous reference signal-related signaling previously communicated with the UE or another UE.

17 . The method of claim 16 , wherein the sparse signaling pattern is determined based on correlations between the antenna ports, the correlations being determined based on the previous reference signal-related signaling.

18 . The method of claim 16 , wherein the previous reference signal-related signaling was received for offline operation that is separate from

Assignees

• Farmanbar Hamidreza
• Ma Jianglei
• Lin Yicheng
• Tadayon Navid
• Huawei Tech Co Ltd

Inventors

• Farmanbar Hamidreza
• Ma Jianglei
• Lin Yicheng
• Tadayon Navid

Classifications

• H04B7/0684

  using different training sequences per antenna · CPC title

• H04B7/066

  Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM] · CPC title

• H04B7/0417

  Feedback systems · CPC title

• H04B7/0626

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04L5/0051 Primary

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title