EP-4742563-A1 - COMMUNICATION METHOD AND COMMUNICATION APPARATUS

Abstract

Embodiments of this application provide a communication method and a communication apparatus. The method includes: receiving a first signal, where the first signal includes a second signal and a third signal that causes interference to the second signal; and learning of, based on received indication information, a resource occupied by the third signal, so that the interference caused by the third signal can be accurately determined based on the resource occupied by the third signal. This helps accurately cancel the third signal from the first signal to obtain the second signal, to implement correct signal receiving and improve signal transmission quality.

Inventors

• JIANG, Chenglong
• Bi, Xiaoyan
• LIU, YONG
• XI, Xiaojun

Assignees

• Huawei Technologies Co., Ltd.

Dates

Publication Date

20260513

Application Date

20230729

Claims (20)

1. A communication method, comprising: receiving a first signal, wherein the first signal comprises a second signal and a third signal, and the third signal is a signal that causes interference to the second signal; receiving indication information, wherein the indication information indicates a resource occupied by the third signal; and determining the second signal from the first signal based on the indication information.
2. The method according to claim 1, wherein the determining the second signal from the first signal based on the indication information comprises: determining, based on the indication information, an interference estimation value on the resource occupied by the third signal; and determining the second signal from the first signal based on the interference estimation value.
3. The method according to claim 1 or 2, wherein the indication information indicates a start location and a size of the resource occupied by the third signal.
4. The method according to claim 3, wherein the indication information comprises a reference point, an offset value, and a resource size, the reference point and the offset value indicate the start location of the resource occupied by the third signal, and the resource size indicates the size of the resource occupied by the third signal.
5. The method according to claim 3, wherein the indication information comprises a precoding resource block group PRG start location, a PRG size, and a quantity of PRGs, the PRG start location indicates the start location of the resource occupied by the third signal, and the PRG size and the quantity of PRGs indicate the size of the resource occupied by the third signal.
6. The method according to claim 1 or 2, wherein the indication information is a bitmap, and first information in the bitmap indicates at least one resource element in the resource occupied by the third signal.
7. The method according to any one of claims 1 to 6, wherein the resource occupied by the third signal and a resource occupied by the second signal totally or partially overlap.
8. The method according to any one of claims 1 to 7, wherein the indication information further indicates at least one of the following information: a port number of the third signal, wherein the port number indicates a source of the third signal; a sequence of the third signal; and scrambling code information of the third signal.
9. A communication method, comprising: sending a second signal to a terminal device; and sending indication information to the terminal device, wherein the indication information indicates a resource occupied by a third signal that causes interference to the second signal.
10. The method according to claim 9, wherein the method further comprises: sending the third signal to the terminal device.
11. The method according to claim 9 or 10, wherein the indication information indicates a start location and a size of the resource occupied by the third signal.
12. The method according to claim 11, wherein the indication information comprises a reference point, an offset value, and a resource size, the reference point and the offset value indicate the start location of the resource occupied by the third signal, and the resource size indicates the size of the resource occupied by the third signal.
13. The method according to claim 11, wherein the indication information comprises a precoding resource block group PRG start location, a PRG size, and a quantity of PRGs, the PRG start location indicates the start location of the resource occupied by the third signal, and the PRG size and the quantity of PRGs indicate the size of the resource occupied by the third signal.
14. The method according to claim 9 or 10, wherein the indication information is a bitmap, and first information in the bitmap indicates at least one resource element in the resource occupied by the third signal.
15. The method according to any one of claims 9 to 14, wherein the resource occupied by the third signal and a resource occupied by the second signal totally or partially overlap.
16. The method according to any one of claims 9 to 15, wherein the indication information further indicates at least one of the following information: a port number of the third signal, wherein the port number indicates a source of the third signal; a sequence of the third signal; and scrambling code information of the third signal.
17. A communication method, comprising: sending, by a second apparatus, a second signal to a first apparatus; sending, by a third apparatus, a third signal to the first apparatus, wherein the third signal causes interference to the second signal; and sending, by a fourth apparatus, indication information to the first apparatus, wherein the indication information indicates a resource occupied by the third signal.
18. The method according to claim 17, wherein the fourth apparatus is the same as the second apparatus, and the third apparatus is different from the second apparatus.
19. The method according to claim 17, wherein the fourth apparatus is the same as the third apparatus, and the fourth apparatus is different from the second apparatus.
20. The method according to claim 17, wherein the fourth apparatus, the second apparatus, and the third apparatus are the same.

Description

TECHNICAL FIELD This application relates to the field of communication technologies, and in particular, to a communication method and a communication apparatus. BACKGROUND Over the past decades, a wireless communication system has undergone evolution and research from first generation analog communication to a 5th generation (5th generation, 5G) communication technology and a current 6th generation (6th generation, 6G) communication technology. When a signal is sent between devices, the device may be interfered by another signal. How to enable a receiving device to accurately cancel interference, to implement correct signal receiving and improve signal transmission quality needs to be resolved. SUMMARY Embodiments of this application provide a communication method and a communication apparatus, to improve signal transmission quality. According to a first aspect, an embodiment of this application provides a communication method. The method may be performed by a first apparatus, and the first apparatus is a terminal device or a module (for example, a chip) used in the terminal device. The method includes: receiving a first signal, where the first signal includes a second signal and a third signal, and the third signal is a signal that causes interference to the second signal; receiving indication information, where the indication information indicates a resource occupied by the third signal; and determining the second signal from the first signal based on the indication information. In the foregoing solution, the first apparatus receives the first signal, where the first signal includes the second signal and the third signal that causes the interference to the second signal, and learns of, based on the received indication information, the resource occupied by the third signal, so that the interference caused by the third signal can be accurately determined based on the resource occupied by the third signal. This helps accurately cancel the third signal from the first signal to obtain the second signal, to implement correct signal receiving and improve signal transmission quality. In a possible implementation method, the determining the second signal from the first signal based on the indication information includes: determining, based on the indication information, an interference estimation value on the resource occupied by the third signal; and determining the second signal from the first signal based on the interference estimation value. In the foregoing solution, the interference estimation value on the resource occupied by the third signal is first determined based on the resource that is occupied by the third signal and that is indicated by the indication information, and then the second signal is determined from the first signal based on the interference estimation value. This helps accurately determine the second signal. According to a second aspect, an embodiment of this application provides a communication method. The method may be performed by a second apparatus, and the second apparatus is a network device or a module (for example, a chip) used in the network device. The method includes: sending a second signal to a terminal device; and sending indication information to the terminal device, where the indication information indicates a resource occupied by a third signal that causes interference to the second signal. In the foregoing solution, the second apparatus sends, to a first apparatus, the second signal and the indicated resource occupied by the third signal that causes the interference to the second signal. The first apparatus may learn of, based on the received indication information, the resource occupied by the third signal, so that the interference caused by the third signal can be accurately determined based on the resource occupied by the third signal. This helps accurately cancel the third signal to obtain the second signal, to implement correct signal receiving and improve signal transmission quality. In a possible implementation method, the method further includes: sending the third signal to the terminal device. According to a third aspect, an embodiment of this application provides a communication method. The method includes: A second apparatus sends a second signal to a first apparatus. A third apparatus sends a third signal to the first apparatus, where the third signal causes interference to the second signal. A fourth apparatus sends indication information to the first apparatus, where the indication information indicates a resource occupied by the third signal. In the foregoing solution, the first apparatus may learn of, based on the received indication information, the resource occupied by the third signal, so that the interference caused by the third signal can be accurately determined based on the resource occupied by the third signal. This helps accurately cancel the third signal to obtain the second signal, to implement correct signal receiving and improve signal transm