CN-118523825-B - Method and device for avoiding interference in satellite system, electronic equipment and storage medium

CN118523825BCN 118523825 BCN118523825 BCN 118523825BCN-118523825-B

Abstract

The embodiment of the application provides an interference avoidance method, device, electronic equipment and storage medium in a satellite system, wherein the method comprises the steps of determining position information of satellites in the satellite system, detecting whether an ascending satellite and a descending satellite with a distance not larger than a preset threshold exist according to the position information, if yes, determining a first BWP and a second BWP for the ascending satellite and the descending satellite, and indicating the ascending satellite and the descending satellite to activate the first BWP and the second BWP respectively so that the ascending satellite can communicate with a ground terminal based on the first BWP, and the descending satellite can communicate with the ground terminal based on the second BWP. Adjacent orbiting satellites and descensus are separated in frequency by dividing the full bandwidth into sub-bandwidths, thereby reducing interference between adjacent orbiting satellites and descensus.

Inventors

Mang ge
ZHANG SHAOWEI
MA DONGJUN
ZHU XUETIAN

Assignees

中国星网网络创新研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20230217

Claims (7)

1. The interference avoidance method in the satellite system is characterized by being applied to a control center in the satellite system, the satellite system further comprises satellites and ground terminals, the control center sets different communication bandwidths for different satellites and monitors the flight states and the space positions of the satellites in the satellite system in real time, the satellites are low-orbit satellites, and the method comprises the following steps: Determining the position information of satellites in a satellite system, and detecting whether an orbit-up satellite and an orbit-down satellite with the distance not larger than a preset threshold exist or not according to the position information; If so, determining a first BWP and a second BWP from full bandwidth pre-allocated to the satellite system for the up-going satellite and the down-going satellite, and indicating the up-going satellite and the down-going satellite to activate the first BWP and the second BWP respectively so that the up-going satellite communicates with a ground terminal based on the first BWP and the down-going satellite communicates with the ground terminal based on the second BWP; when it is detected that there are an up-track satellite and a down-track satellite with a separation distance not greater than a preset threshold, the method further comprises: Determining an ascending satellite set and a descending satellite set according to the position information, wherein the ascending satellite set comprises M ascending satellites, and the descending satellite set comprises N descending satellites, the distance between any one of the ascending satellites and at least one of the descending satellites in the descending satellite set is not greater than a preset threshold value, and the distance between any one of the descending satellites and at least one of the ascending satellites in the descending satellite set is not greater than a preset threshold value; Determining a first BWP and a second BWP respectively aiming at the ascending satellite set and the descending satellite set, wherein the first BWP comprises K first sub BWPs, K is greater than or equal to M, the second BWP comprises Q second sub BWPs, Q is greater than or equal to N, each ascending satellite in the ascending satellite set corresponds to one first sub BWP, each descending satellite in the descending satellite set corresponds to one second sub BWP, and the frequency point and the bandwidth of each BWP are different; For the up-track satellites in the up-track satellite set, indicating the up-track satellites to activate corresponding first sub-BWP, and for the down-track satellites in the down-track satellite set, indicating the down-track satellites to activate corresponding second sub-BWP; and judging whether the distance between the up-track satellite and the down-track satellite which respectively activate the first BWP and the second BWP is larger than a preset threshold value, if so, indicating the up-track satellite and the down-track satellite to activate initial bandwidths, and communicating with a ground terminal based on the initial bandwidths.
2. The method of claim 1, wherein the step of determining location information for satellites in the satellite system comprises: And determining the position information of the satellites in the satellite system according to the satellite ephemeris of the satellite system.
3. The method of claim 1, wherein the step of determining location information for satellites in the satellite system comprises: Determining a target satellite in the satellite system, wherein the target satellite is a satellite which is in communication with a ground terminal; position information of the target satellite is determined.
4. The interference avoidance device in the satellite system is characterized by being applied to a control center in the satellite system, the satellite system further comprises satellites and ground terminals, the control center sets different communication bandwidths for different satellites and monitors the flight state and the space position of each satellite in the satellite system in real time, the satellites are low-orbit satellites, and the device comprises: the first determining module is used for determining the position information of satellites in a satellite system, and detecting whether an ascending satellite and a descending satellite with the distance not larger than a preset threshold exist or not according to the position information; A first allocation module for determining, for the up-going satellite and the down-going satellite, a first BWP and a second BWP from a full bandwidth pre-allocated to the satellite system, and instructing the up-going satellite and the down-going satellite to activate the first BWP and the second BWP, respectively, so that the up-going satellite communicates with a ground terminal based on the first BWP and the down-going satellite communicates with the ground terminal based on the second BWP; The system comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining an ascending satellite set and a descending satellite set according to the position information, the ascending satellite set comprises M ascending satellites, and the descending satellite set comprises N descending satellites, the distance between any ascending satellite in the ascending satellite set and at least one descending satellite in the descending satellite set is not greater than a preset threshold value, and the distance between any descending satellite in the descending satellite set and at least one ascending satellite in the ascending satellite set is not greater than a preset threshold value; The system comprises a first distribution module, a second distribution module and a first distribution module, wherein the first distribution module is used for respectively determining a first BWP and a second BWP for the ascending satellite set and the descending satellite set, the first BWP comprises K first sub BWPs, K is greater than or equal to M, the second BWP comprises Q second sub BWPs, Q is greater than or equal to N, each ascending satellite in the ascending satellite set corresponds to one first sub BWP, each descending satellite in the descending satellite set corresponds to one second sub BWP, and the frequency point and the bandwidth of each BWP are different; An indication module, configured to instruct, for an up-track satellite in the up-track satellite set, the up-track satellite to activate a corresponding first sub BWP, and instruct, for a down-track satellite in the down-track satellite set, the down-track satellite to activate a corresponding second sub BWP; And the judging module is used for judging whether the distance between the track lifting satellite and the track descending satellite which are respectively activated at present by the first BWP and the second BWP is larger than a preset threshold value, if so, indicating the track lifting satellite and the track descending satellite to activate initial bandwidths, and communicating with the ground terminal based on the initial bandwidths.
5. The apparatus of claim 4, wherein the first determining module is specifically configured to: Determining a target satellite in the satellite system, wherein the target satellite is a satellite which is in communication with a ground terminal; position information of the target satellite is determined.
6. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus; a memory for storing a computer program; a processor for carrying out the method steps of any one of claims 1-3 when executing a program stored on a memory.
7. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored therein a computer program which, when executed by a processor, implements the method steps of any of claims 1-3.

Description

Method and device for avoiding interference in satellite system, electronic equipment and storage medium Technical Field The present application relates to the field of satellite communications technologies, and in particular, to a method and apparatus for avoiding interference in a satellite system, an electronic device, and a storage medium. Background In the field of low-orbit satellite communication, when an orbit ascending satellite is close to an orbit descending satellite, a side lobe of a communication beam between the orbit ascending satellite and a ground gateway station can cause signal interference to the orbit descending satellite, and a side lobe of the communication beam between the orbit descending satellite and the ground gateway station can also cause signal interference to the orbit ascending satellite. In the related art, in order to avoid the signal interference, a non-orthogonal multiple access beam needs to be formed through data transmission rate sensing, a modulation and coding mode and correlation calculation in the communication process, but a receiving algorithm of the non-orthogonal multiple access is complex and has poor applicability. Disclosure of Invention An object of an embodiment of the present application is to provide a method, an apparatus, an electronic device, and a storage medium for avoiding interference in a satellite system, which are used for reducing interference between an adjacent orbiting satellite and a descending satellite. The specific technical scheme is as follows: In order to achieve the above object, an embodiment of the present application provides a method for avoiding interference in a satellite system, where the method includes: Determining the position information of satellites in a satellite system, and detecting whether an orbit-up satellite and an orbit-down satellite with the distance not larger than a preset threshold exist or not according to the position information; If so, determining a first BWP and a second BWP for the up-going satellite and the down-going satellite, and instructing the up-going satellite and the down-going satellite to activate the first BWP and the second BWP, respectively, so that the up-going satellite communicates with a ground terminal based on the first BWP, and the down-going satellite communicates with the ground terminal based on the second BWP. Optionally, the step of determining the position information of the satellites in the satellite system includes: And determining the position information of the satellites in the satellite system according to the satellite ephemeris of the satellite system. Optionally, when it is detected that there are an up-track satellite and a down-track satellite whose pitches are not greater than a preset threshold, the method further includes: Determining an ascending satellite set and a descending satellite set according to the position information, wherein the ascending satellite set comprises M ascending satellites, and the descending satellite set comprises N descending satellites, the distance between any one of the ascending satellites and at least one of the descending satellites in the descending satellite set is not greater than a preset threshold value, and the distance between any one of the descending satellites and at least one of the ascending satellites in the descending satellite set is not greater than a preset threshold value; Determining a first BWP and a second BWP respectively aiming at the ascending satellite set and the descending satellite set, wherein the first BWP comprises K first sub BWPs, K is greater than or equal to M, the second BWP comprises Q second sub BWPs, and Q is greater than or equal to N; And for the up-track satellites in the up-track satellite set, indicating the up-track satellites to activate corresponding first sub-BWP, and for the down-track satellites in the down-track satellite set, indicating the down-track satellites to activate corresponding second sub-BWP. Optionally, the step of determining the position information of the satellites in the satellite system includes: Determining a target satellite in the satellite system, wherein the target satellite is a satellite which is in communication with a ground terminal; position information of the target satellite is determined. Optionally, the method further comprises: and judging whether the distance between the up-track satellite and the down-track satellite which respectively activate the first BWP and the second BWP is larger than a preset threshold value, if so, indicating the up-track satellite and the down-track satellite to activate initial bandwidths, and communicating with a ground terminal based on the initial bandwidths. In order to achieve the above object, an embodiment of the present application further provides an interference avoidance apparatus in a satellite system, which is applied to a control center in the satellite system, where the satellite system further i