US-20260128837-A1 - COMMUNICATION METHOD AND COMMUNICATION APPARATUS

US20260128837A1US 20260128837 A1US20260128837 A1US 20260128837A1US-20260128837-A1

Abstract

A communication method and a communication apparatus include a network device that sends first indication information to a terminal device, where the first indication information indicates that a first signal in a first time period is associated with a second signal or is not associated with the second signal, the first signal is used for communication, and the second signal is used for one or more of communication, sensing, or power transfer; and when the first indication information indicates that the first signal is associated with the second signal, the network device sends the first signal and the second signal to the terminal device; or when the first indication information indicates that the first signal is not associated with the second signal, the network device sends the first signal to the terminal device.

Inventors

Xinqian XIE
JIANZHONG LU
Jiafeng SHAO

Assignees

HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20251230
Priority Date: 20230704

Claims (19)

1 . A method, comprising: receiving first indication information, wherein the first indication information indicates that a first signal in a first time period is associated with a second signal or is not associated with the second signal, the first signal is used for communication, and the second signal is used for one or more of communication, sensing, or power transfer; when the first indication information indicates that the first signal is associated with the second signal, receiving the first signal and the second signal, or when the first indication information indicates that the first signal is not associated with the second signal, receiving the first signal; and demodulating the first signal based on the first indication information.
2 . The method according to claim 1 , wherein when the first indication information indicates that the first signal is associated with the second signal, the first indication information further indicates a type of the second signal, and the type of the second signal comprises one of a communication signal, a sensing signal, a sensing-communication signal, or a power transfer signal.
3 . The method according to claim 1 , wherein when the first indication information indicates that the first signal is associated with the second signal, the first indication information further indicates a relative power value between the first signal and the second signal.
4 . The method according to claim 1 , wherein, when the first indication information indicates that the first signal is associated with the second signal, the method further comprises: receiving second indication information, wherein the second indication information indicates at least one of a sequence of the second signal, a frequency domain coefficient of the second signal, or a time domain position of the second signal; and wherein demodulating the first signal based on the first indication information comprises: demodulating the first signal based on the first indication information and the second indication information.
5 . The method according to claim 1 , wherein the first indication information is carried in downlink control information (DCI).
6 . A method, comprising: sending first indication information, wherein the first indication information indicates that a first signal in a first time period is associated with a second signal or is not associated with the second signal, the first signal is used for communication, and the second signal is used for one or more of communication, sensing, or power transfer; and when the first indication information indicates that the first signal is associated with the second signal, sending the first signal and the second signal; or when the first indication information indicates that the first signal is not associated with the second signal, sending the first signal.
7 . The method according to claim 6 , further comprising: when sending the first signal and the second signal, receiving an echo signal of the second signal, and performing sensing based on the echo signal.
8 . The method according to claim 6 , wherein when the first indication information indicates that the first signal is associated with the second signal, the first indication information further indicates a type of the second signal, and the type of the second signal comprises one of a communication signal, a sensing signal, a sensing-communication signal, or a power transfer signal.
9 . The method according to claim 6 , wherein when the first indication information indicates that the first signal is associated with the second signal, the first indication information further indicates a relative power value between the first signal and the second signal.
10 . The method according to claim 6 , further comprising: when the first indication information indicates that the first signal is associated with the second signal, sending second indication information, wherein the second indication information indicates at least one of a sequence of the second signal, a frequency domain coefficient of the second signal, or a time domain position of the second signal.
11 . The method according to claim 6 , wherein the first indication information is carried in downlink control information (DCI).
12 . A communication apparatus, comprising: a transceiver, configured to: receive first indication information, wherein the first indication information indicates that a first signal in a first time period is associated with a second signal or is not associated with the second signal, the first signal is used for communication, and the second signal is used for one or more of communication, sensing, or power transfer; and receive the first signal and the second signal when the first indication information indicates that the first signal is associated with the second signal, or receive the first signal when the first indication information indicates that the first signal is not associated with the second signal; and a processor, configured to demodulate the first signal based on the first indication information.
13 . The apparatus according to claim 12 , wherein when the first indication information indicates that the first signal is associated with the second signal, the first indication information further indicates a type of the second signal, and the type of the second signal comprises one of a communication signal, a sensing signal, a sensing-communication signal, or a power transfer signal.
14 . The apparatus according to claim 12 , wherein when the first indication information indicates that the first signal is associated with the second signal, the first indication information further indicates a relative power value between the first signal and the second signal.
15 . The apparatus according to claim 12 , wherein when the first indication information indicates that the first signal is associated with the second signal, the transceiver is further configured to: receive second indication information, wherein the second indication information indicates at least one of a sequence of the second signal, a frequency domain coefficient of the second signal, or a time domain position of the second signal; and the processor is further configured to: demodulate the first signal based on the first indication information and the second indication information.
16 . The apparatus according to claim 12 , wherein the first indication information is carried in downlink control information (DCI).
17 . The method according to claim 1 , wherein the first indication information comprises a two-bit field that indicates whether the first signal in the first time period is associated with the second signal, and when the first signal is associated with the second signal, indicates a type of the second signal.
18 . The method according to claim 6 , wherein the first indication information comprises a two-bit field that indicates whether the first signal in the first time period is associated with the second signal, and when the first signal is associated with the second signal, indicates a type of the second signal.
19 . The apparatus according to claim 12 , wherein the first indication information comprises a two-bit field that indicates whether the first signal in the first time period is associated with the second signal, and when the first signal is associated with the second signal, indicates a type of the second signal.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2024/100635, filed on Jun. 21, 2024, which claims priority to Chinese Patent Application No. 202310813547.2, filed on Jul. 4, 2023. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD The embodiments relate to the communication field, for example, to a communication method and a communication apparatus. BACKGROUND In an evolution process from a 5th generation (5G) mobile communication system to a 5G-advanced (5G-A) technology, an integrated sensing and communication technology is considered to be one of key technologies that can extend a service capability of a mobile communication network. A core idea of this technology is to add a sensing capability to the mobile communication network, and construct a capability of detecting, tracking, and imaging a target, so that communication and sensing capabilities are integrated into one network, thereby implementing harmonious coexistence or even mutual benefit. In an integrated sensing and communication scenario, a network device may simultaneously send a sensing signal and a communication signal to a terminal device. The sensing signal is for obtaining information such as a position, a speed, and a type of the terminal device, and the communication signal is for transmitting data information or control information. The terminal device obtains the sensing signal and the communication signal, and parses the communication signal, to obtain the data information or the control information transmitted by using the communication signal. However, the integrated sensing and communication technology has the following problem: communication efficiency of the communication signal is low. SUMMARY The embodiments provide a communication method and a communication apparatus, to help improve communication efficiency of a communication signal. According to a first aspect, a communication method is provided. The method may be performed by a terminal device, or may be performed by a module (for example, a processor, a chip, or a chip system) used in the terminal device, or may be implemented by a logical node, a logical module, or software that can implement all or a part of functions of the terminal device. The method includes: receiving first indication information, where the first indication information indicates that a first signal in a first time period is associated with a second signal or is not associated with the second signal, the first signal is used for communication, and the second signal is used for one or more of communication, sensing, or power transfer; when the first indication information indicates that the first signal is associated with the second signal, receiving the first signal and the second signal; or when the first indication information indicates that the first signal is not associated with the second signal, receiving the first signal; and demodulating the first signal based on the first indication information. The first signal is used for communication, in other words, the first signal may include control information or data information. The first signal may also be referred to as a communication signal, which is not limited herein. The second signal is used for one or more of communication, sensing, or power transfer. If the second signal is used for sensing, in other words, the second signal is used for obtaining information such as a position, a speed, and a type of the terminal device, the second signal may also be referred to as a sensing signal, which is not limited herein. In a possible embodiment, the first indication information indicates that the first signal in the first time period is associated with the second signal. In other words, an association exists between the first signal in the first time period and the second signal. If the association exists between the first signal and the second signal, it indicates that the terminal device is in an integrated sensing and communication scenario. The first signal in the first time period indicates that the first signal is sent or received in the first time period. The first time period indicates duration. A length of the first time period is not limited. When the first indication information indicates that the first signal is associated with the second signal, the first signal and the second signal may be received, and interference from the second signal may be eliminated during the demodulation on the first signal. In this embodiment, it can be determined, based on the first indication information, that the second signal causes interference to the demodulation on the first signal. Therefore, during the demodulation on the first signal, the interference from the second signal can be eliminated, thereby improving communication efficiency of the first signal. In another possible embodiment, the first indication