A Satellite Handover Strategy Based on Heuristic Algorithm for LEO Satellite Networks

被引：4
|
作者：
Zhang, Senbai [1 ]
Liu, Aijun [1 ]
Han, Chen [1 ]
Liang, Xiaohu [1 ,2 ]
Ding, Xiang [1 ]
Lu, Aihong [1 ,3 ]
机构：
[1] Army Engn Univ PLA, Coll Commun Engn, Nanjing 210007, Peoples R China
[2] Southeast Univ, Sch Informat Sci & Engn, Nanjing 210018, Peoples R China
[3] Suzhou Inst Trade & Commerce, Suzhou 215009, Peoples R China
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2022年 / E105B卷 / 07期
基金：
中国博士后科学基金; 国家重点研发计划; 中国国家自然科学基金;
关键词：
LEO satellite network; massive UTs; handover; CHANNEL ALLOCATION; OPTIMIZATION; SCHEME;
D O I：
10.1587/transcom.2021EBP3100
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Due to the significant difference in speed between the user terminals (UTs) and the low earth orbit (LEO) satellites, it is necessary to solve the frequent handover of UTs at the edge of the moving satellite beams. Besides, as the development of LEO satellite communications, the scale of constellations and the number of UTs undergoing massive increase. Thus, in this paper, a satellite handover strategy is proposed to improve the handover performances of UTs and satellites. We define the utility function of handover jointly by considering the quality of experience of UTs, the throughput of satellites and the load balancing of network. Then, a coding method is proposed to represent the combinations of UTs and satellites. To reduce the calculational cost, an access and handover strategy based on a heuristic algorithm is proposed to search the optimal handover result. Finally, simulations show the effectiveness and superiority of the proposed strategy.
引用
收藏
页码：876 / 884
页数：9
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