Signal transmission method, network device, and terminal device

Patent metadata

Field	Value
Publication number	US-10979193-B2
Application number	US-201916502956-A
Country	US
Kind code	B2
Filing date	Jul 3, 2019
Priority date	Jan 6, 2017
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

The present disclosure relates to signal transmission methods, network devices, and terminal devices. One example method includes sending, by a network device, N first reference signals to a terminal device, where N is a positive integer greater than or equal to 1, sending, by the network device, physical layer control signaling to the terminal device, where the physical layer control signaling is used to trigger the terminal device to send a channel quality measurement result of the N first reference signals to the network device, and is used to instruct the terminal device to send M second reference signals to the network device, and M is a positive integer greater than or equal to 1, receiving, by the network device, the channel quality measurement result from the terminal device, and receiving, by the network device, the M second reference signals from the terminal device.

First claim

What is claimed is:

1. A signal transmission method, comprising:
receiving, by a terminal device and from a network device, an indication information, wherein the indication information is used to indicate an association between transmitting M second reference signals and a resource index of a first reference signal, wherein the first reference signal is sent by the network device to the terminal device, wherein M is a positive integer greater than or equal to 1, and wherein according to the association, a formed transmit beam for the M second reference signals is the same as a formed receive beam for the first reference signal;
receiving, by the terminal device, physical layer control signaling and from the network device, wherein the physical layer control signaling is used to indicate the terminal device transmitting one or more second reference signal to the network device; and
transmitting, by the terminal device, one or more second reference signal to the network device.

2. The method according to claim 1 , wherein the method comprises:
transmitting, by the terminal device, an indication information indicating that reciprocity between a receive beam and a transmit beam on the terminal device side stands to the network device.

3. The method according to claim 1 , wherein the method comprises:
receiving, by the terminal device, physical layer control signaling and from the network device, wherein the physical layer control signaling is used to trigger the terminal device to transmit a channel quality measurement result of N first reference signals to the network device, and wherein N is a positive integer greater than or equal to 1.

4. The method according to claim 3 , wherein the channel quality measurement result comprises the resource index of the first reference signal from the N first reference signals.

5. A signal transmission method, comprising:
receiving, by a terminal device and from a network device, N first reference signals, wherein N is a positive integer greater than or equal to 1;
obtaining, by the terminal device, a channel quality measurement result of the N first reference signals;
receiving, by the terminal device and from the network device, physical layer control signaling, wherein the physical layer control signaling is used to trigger the terminal device to transmit the channel quality measurement result of the N first reference signals to the network device, wherein the physical layer control signaling is further used to instruct the terminal device to transmit M second reference signals to the network device, and wherein M is a positive integer greater than or equal to 1;
transmitting, by the terminal device, the channel quality measurement result to the network device;
transmitting, by the terminal device, the M second reference signals to the network device; and
receiving, by the terminal device, an indication information from the network device, wherein the indication information is used to indicate an association between transmitting the M second reference signals and the channel quality measurement result of the N first reference signal, and wherein a formed transmit beam for the M second reference signals is the same as a formed receive beam for one of the N first reference signal.

6. The method according to claim 5 , wherein the channel quality measurement result comprises a resource index of one of the N first reference signals.

7. The method according to claim 5 , wherein at least one of:
transmission bandwidth of the second reference signal is less than or equal to transmission bandwidth of the first reference signal; or
a frequency domain resource used for transmitting the second reference signal is a subset of a frequency domain resource used for transmitting the first reference signal.

8. The method according to claim 5 , wherein a moment n for transmitting the M second reference signals and a moment k for transmitting the channel quality measurement result meet the following condition:
n=k+m, wherein:
m is a positive integer greater than 0, or m is equal to 0, or m is a negative integer less than 0.

9. The method according to claim 5 , wherein the method comprises:
transmitting, by the terminal device, an indication information indicating whether reciprocity between a receive beam and a transmit beam on the terminal device side stands to the network device.

10. A network device, comprising at least one processor coupled to a memory and configured to read an instruction in the memory to cause the network device to:
transmit N first reference signals to a terminal device, wherein N is a positive integer greater than or equal to 1;
transmit physical layer control signaling to the terminal device, wherein the physical layer control signaling is used to trigger the terminal device to transmit a channel quality measurement result of the N first reference signals to the network device, wherein the physical layer control signaling is further used to instruct the terminal device to transmit M second reference signals to the network device, and wherein M is a positive integer greater than or equal to 1;
after transmitting the physical layer control signaling, receive the channel quality measurement result sent by the terminal device;
receive the M second reference signals sent by the terminal device; and
transmit an indication information to the terminal device, wherein the indication information is used to indicate an association between transmitting the M second reference signals and the channel quality measurement result of the N first reference signal, and wherein a formed transmit beam for the M second reference signals is the same as a formed receive beam for one of the N first reference signal.

11. The network device according to claim 10 , wherein at least one of:
transmission bandwidth of the second reference signal is less than or equal to transmission bandwidth of the first reference signal; or
a frequency domain resource used for transmitting the second reference signal is a subset of a frequency domain resource used for transmitting the first reference signal.

12. The network device according to claim 10 , wherein a moment n for transmitting the M second reference signals received by the network device and a moment k for transmitting the channel quality measurement result received by the network device meet the following condition:
n=k+m, wherein:
m is a positive integer greater than 0, or m is equal to 0, or m is a negative integer less than 0.

13. The network device according to claim 10 , wherein the channel quality measurement result comprises a resource index of one of the N first reference signals.

14. The network device according to claim 10 , wherein the at least one processor coupled to a memory and configured to read an instruction in the memory to cause the network device to:
receive an indication information indicating whether reciprocity between a receive beam and a transmit beam on the terminal device side stands to the network device.

15. A terminal device, comprising at least one processor coupled to a memory and configured to read an instruction in the memory to cause the terminal device to:
receive an indication information from a network device, wherein the indication information is used to indicate an association between transmitting M second reference signals and a resource index of a first reference signal, wherein the first reference signal is sent by the network device to the terminal device, wherein M is a positive integer greater than or equal to 1, and wherein according to the association, a formed transmit beam fo

Assignees

• Huawei Tech Co Ltd

Inventors

• Liu Jianqin

Classifications

• H04B7/06966

  using beam correspondence; using channel reciprocity, e.g. downlink beam training based on uplink sounding reference signal [SRS] · CPC title

• H04B7/0617 Primary

  for beam forming · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W80/08

  Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} · CPC title

• H04L1/0026

  Transmission of channel quality indication · CPC title