CN112532303A

CN112532303A - Low-orbit satellite beam efficient scheduling method

Info

Publication number: CN112532303A
Application number: CN202011363726.3A
Authority: CN
Inventors: 吴坚; 周继华; 叶荣飞; 黄华; 赵涛; 张波; 肖君
Original assignee: Chongqing Jinmei Communication Co Ltd
Current assignee: Chongqing Jinmei Communication Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-03-19

Abstract

The invention discloses a method for efficiently scheduling low-orbit satellite beams, which comprises the following steps: the low earth orbit satellite divides the wave beam scheduling period into a signaling period and a data period, each wave beam in the signaling period is scheduled in a polling way, the access of the user station is completed, and simultaneously the geographical position information carried by the user station is stored; and in the data period, the minimum circle radius r1 covering all the user stations is calculated according to the geographical position information of the user stations of the adjacent signaling beams, when r1 is smaller than the data beam covering radius r2, the user stations covered by the two signaling beams adopt a data beam for scheduling, the beam center is the center of the minimum circle, otherwise, the user stations covered by the two signaling beams adopt independent data beams, and the beam center is consistent with the signaling beams. When the minimum circle radius of the user station of the adjacent wave beams is smaller than the maximum coverage radius of the wave beams, the method reduces the number of the data wave beams and the scheduling times of the data wave beams by adjusting the circle centers of the data wave beams.

Description

Low-orbit satellite beam efficient scheduling method

Technical Field

The invention relates to the technical field of satellite communication, in particular to a beam scheduling method of a low-earth-orbit satellite system.

Background

In order to improve the information transmission rate of the low-earth satellite system, the low-earth satellite system starts to use a phased array antenna to form narrow-band multi-beams pointing to different areas, the quality of a channel is improved through the narrow-band multi-beams, and the satellite-ground data communication rate is improved. However, currently, a beam coverage scheme based on geographic location is mainly adopted, the coverage area is divided into different beam coverage areas according to the coverage area and the number of beams of the low-earth orbit satellite, and each beam is used for polling coverage, so that the low-earth orbit satellite has to schedule the beam to point for a long time for data communication as long as one subscriber station exists in the beam coverage area, and the total capacity of the low-earth orbit satellite system is reduced.

Disclosure of Invention

The invention aims to provide an efficient beam dynamic scheduling method for a low-orbit satellite, which reduces the scheduling times of data beams and improves the transmission capacity of a system.

The invention provides a low-orbit satellite beam efficient scheduling method, which comprises the following working steps:

step A: dividing a beam scheduling period into a signaling period and a data period, wherein the signaling period polls each beam, sends broadcast signaling and receives user station access signaling, and the access signaling carries geographical position information;

and B: b, according to the geographic position information of the user station received in the step A, calculating the minimum circle radius covering the access of adjacent signaling beams to the user station, and when the minimum circle radius r1 is smaller than the maximum coverage radius r2 of the data beams, adopting one data beam for scheduling the user station covered by the two signaling beams, wherein the center of each beam is the center of the minimum circle, otherwise, the user station covered by the two signaling beams is independently scheduled, and the centers of the beams are consistent with the centers of the signaling beams;

and C: and B, performing polling scheduling according to the data beam calculated in the step B.

For the processing procedure of the step B, the method comprises the following steps:

step B1: counting the geographical position information of all access subscriber stations;

step B2: calculating the minimum circle radius r1 of the adjacent signaling wave beam accessing user station by adopting a minimum circle covering algorithm;

step B3: comparing the minimum circle radius R1 with the data beam maximum coverage radius R2, entering step B4 when R1< R2, if not, entering step B5;

step B4: the user station under the coverage of the adjacent signaling wave beams adopts 1 data wave beam for scheduling, and the circle center of the wave beam is the circle center of the smallest circle;

step B5: the user station under the coverage of the adjacent signaling wave beams adopts independent 2 data wave beams for scheduling, and the centers of the wave beams are consistent with the signaling wave beams.

Drawings

Fig. 1 is a schematic diagram of a beam scheduling procedure.

Detailed Description

To make the objects and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a beam scheduling process, which divides scheduling types into a signaling beam period and a data beam period, and the data beam period completes a process of counting the number of beams and circle centers, and includes the following specific steps:

step 101: starting beam scheduling;

step 102: judging the scheduling type at the current moment, if the scheduling type is a signaling beam period, performing step 103, and if not, entering step 104;

step 103: each signaling beam polls and schedules, sends a broadcast signaling and receives a network access signaling;

step 104: counting the geographic position information of the access subscriber station;

step 105: according to step 104, calculating the minimum circle radius r1 covering the access subscriber station of the adjacent signaling beam by using a minimum circle covering algorithm;

step 106: comparing the calculated minimum circle radius r1 with the maximum coverage radius r2 of the data beam, if r1< r2, performing step 109, and if not, performing step 107;

step 107: the adjacent signaling beam access users adopt independent data beam scheduling;

step 108: the data beam center is consistent with the signaling beam, and step 111 is performed;

step 109: the adjacent signaling beam access user adopts 1 data beam scheduling;

step 110: the center of the data beam circle is the center of the circle of the minimum circle;

step 111: each data beam carries out polling scheduling to complete data receiving and sending;

step 112: the beam scheduling is ended.

In summary, the above description is only a preferred example of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low orbit satellite beam high-efficiency scheduling method is characterized in that geographical position information of an access user station is counted, a minimum circle covering an adjacent beam access user is calculated, when the minimum circle radius is smaller than the beam covering radius, the adjacent beam access user station adopts 1 data beam scheduling, the circle center of the beam is the circle center of the minimum circle, otherwise, the adjacent beam access user station adopts 2 independent data beam scheduling; the beam scheduling method comprises the following steps:

step 1: counting the geographic position information of the access subscriber station, and calculating the minimum circle radius r1 of the adjacent wave beam access subscriber station by adopting a minimum circle coverage algorithm;

step 2: judging the minimum circle radius r1 and the maximum data beam coverage radius r 2;

and step 3: r1< r2, the adjacent beam access user station adopts 1 data beam scheduling, the center of the beam is the center of the smallest circle; r1 is more than or equal to r2, and the adjacent beam access user station adopts independent 2 data beam scheduling.