EP-4742557-A1 - COMMUNICATION METHOD AND RELATED DEVICE

EP4742557A1EP 4742557 A1EP4742557 A1EP 4742557A1EP-4742557-A1

Abstract

A communication method and a related device are provided, to indicate an orbital region in which a network device performs communication, so that a terminal device can perform communication when the network device is located in an orbital region in which the network device expects to perform communication. This can prevent the terminal device from performing communication when the network device is located in an orbital region other than the orbital region in which the network device expects to perform communication, and can reduce a possibility of communication interference between signals of different network devices, thereby improving communication efficiency. In the method, the terminal device receives first information, where the first information indicates an orbital region in which a first network device performs communication; and when it is determined that a position of the first network device is located in the orbital region, the terminal device sends second information, where the second information is associated with the first network device.

Inventors

LUO, Hejia
WANG, XIAOLU
KONG, Chuili
LI, KEXIN
WANG, JUN

Assignees

Huawei Technologies Co., Ltd.

Dates

Publication Date: 20260513
Application Date: 20230911

Claims (20)

A communication method, comprising: receiving first information, wherein the first information indicates an orbital region in which a first network device performs communication; and when it is determined that a position of the first network device is located in the orbital region, sending second information, wherein the second information is associated with the first network device.
The method according to claim 1, wherein the orbital region comprises an inter-orbit position interval range.
The method according to claim 2, wherein the inter-orbit position interval range comprises a position interval start point and a position interval end point, and the first information comprises an offset of a right ascension of an ascending node of an orbit corresponding to the position interval start point at a reference moment relative to a reference point angle, and/or an offset of a right ascension of an ascending node of the orbit corresponding to the position interval end point at the reference moment relative to the reference point angle.
The method according to any one of claims 1 to 3, wherein the orbital region comprises an intra-orbit angle interval range.
The method according to claim 4, wherein the intra-orbit angle interval comprises an angle interval start point and an angle interval end point, and the first information comprises an offset of the angle interval start point relative to a reference point, and/or an offset of the angle interval end point relative to the reference point.
The method according to any one of claims 1 to 5, wherein the method further comprises: receiving third information, wherein the third information indicates an effectiveness condition of the orbital region.
The method according to any one of claims 1 to 6, wherein sending the second information when it is determined that the position of the first network device is located in the orbital region comprises: sending the second information when it is determined that the position of the first network device is located in the orbital region and that the effectiveness condition is met.
The method according to claim 7, wherein when it is determined that the effectiveness condition is not met, the method further comprises: sending fourth information, wherein the fourth information is used to request to update the first information.
The method according to any one of claims 6 to 8, wherein the effectiveness condition comprises an effective time and/or an effective geographical location.
The method according to any one of claims 1 to 9, wherein sending the second information comprises: sending the second information to the first network device, wherein the second information comprises at least one of the following: cell measurement information of a terminal device with respect to the first network device, initial access information for accessing the first network device, handover-related access information for accessing the first network device, and uplink data of the terminal device.
The method according to any one of claims 1 to 10, wherein sending the second information comprises: sending the second information to a second network device, wherein the second information comprises at least one of the following: cell measurement information of a terminal device with respect to the first network device, handover-related access information for accessing the first network device, and uplink data of the terminal device.
The method according to any one of claims 1 to 11, wherein the method further comprises: receiving fifth information, wherein the fifth information is used to determine the position of the first network device.
A communication method, comprising: determining first information, wherein the first information indicates an orbital region in which a first network device performs communication; and sending the first information to a terminal device.
The method according to claim 13, wherein the orbital region comprises an inter-orbit position interval range.
The method according to claim 14, wherein the inter-orbit position interval range comprises a position interval start point and a position interval end point, and the first information comprises an offset of a right ascension of an ascending node of an orbit corresponding to the position interval start point at a reference moment relative to a reference point angle, and/or an offset of a right ascension of an ascending node of the orbit corresponding to the position interval end point at the reference moment relative to the reference point angle.
The method according to any one of claims 13 to 15, wherein the orbital region comprises an intra-orbit angle interval range.
The method according to claim 16, wherein the intra-orbit angle interval comprises an angle interval start point and an angle interval end point, and the first information comprises an offset of the angle interval start point relative to a reference point, and/or an offset of the angle interval end point relative to the reference point.
The method according to any one of claims 13 to 17, wherein the method further comprises: when it is determined that a position of the first network device is located in the orbital region, receiving second information, wherein the second information is associated with the first network device.
The method according to claim 18, wherein receiving the second information when it is determined that the position of the first network device is located in the orbital region comprises: receiving the second information when it is determined that the position of the first network device is located in the orbital region and that an effectiveness condition is met.
The method according to any one of claims 13 to 19, wherein when it is determined that the effectiveness condition is not met, the method further comprises: receiving fourth information, wherein the fourth information is used to request to update the first information.

Description

TECHNICAL FIELD This application relates to the communication field, and in particular, to a communication method and a related device. BACKGROUND In a communication system, a signal (for example, the signal carries configuration information, configuration signaling, or the like) that can be sent by a network device may be used to configure communication resources. The communication resources may include communication resources of the network device and communication resources of a possible neighboring network device, so that a receiver of the signal can determine a corresponding communication resource based on the signal. For example, when the receiver of the signal is a terminal device, the terminal device can obtain a network service based on the communication resource. Generally, assuming that the network device is a terrestrial base station, the terrestrial base station and another neighboring terrestrial base station are generally fixed at places on the ground, that is, relative positions between different terrestrial base stations are generally unchanged. Therefore, network management personnel may perform network planning in advance, so that communication resources (for example, the communication resources may include time domain resources and frequency domain resources) indicated by different signals sent by different terrestrial base stations for a same communication region can be different, to reduce communication interference for the terminal device in the same communication region. However, the network device may not be fixed at a place on the ground. For example, the network device may be a device such as a low earth orbit satellite, a medium earth orbit satellite, or a high earth orbit satellite. In this case, because the network device itself moves at a high speed, a position of the network device may change frequently. As a result, communication resources indicated by different signals sent by different network devices for a same communication region may be the same. Consequently, a possibility of communication interference is increased, and communication efficiency is affected. SUMMARY This application provides a communication method and a related device, to indicate an orbital region in which a network device performs communication, so that a terminal device can perform communication when the network device is located in an orbital region in which the network device expects to perform communication. This can prevent the terminal device from performing communication when the network device is located in an orbital region other than the orbital region in which the network device expects to perform communication, and can reduce a possibility of communication interference between signals of different network devices, thereby improving communication efficiency. A first aspect of this application provides a communication method. The method is performed by a terminal device, or the method is performed by some components (for example, a processor, a chip, or a chip system) in the terminal device, or the method may be implemented by a logical module or software that can implement all or some functions of the terminal device. In the first aspect and possible implementations of the first aspect, an example in which the method is performed by the terminal device is used for description. In the method, the terminal device receives first information, where the first information indicates an orbital region in which a first network device performs communication; and when it is determined that a position of the first network device is located in the orbital region, the terminal device sends second information, where the second information is associated with the first network device. Based on the foregoing technical solution, the first information received by the terminal device indicates the orbital region in which the first network device performs communication. Then, when the terminal device determines that the position of the first network device is located in the orbital region, the terminal device sends the second information associated with the first network device. In other words, after the terminal device determines, based on the received first information, the orbital region in which the network device performs communication, and when it is determined that the position of the network device is located in the orbital region, the terminal device determines that communication with the network device can be initiated. In this way, the orbital region in which the network device performs communication is indicated, so that the terminal device can perform communication when the network device is located in an orbital region in which the network device expects to perform communication. This can prevent the terminal device from performing communication when the network device is located in an orbital region other than the orbital region in which the network device expects to perform communication, and can