{"title":"Handover Strategy for LEO Satellite Networks Using Bipartite Graph and Hysteresis Margin","authors":"Sahar Eydian;Maryam Hosseini;Gunes Karabulut Kurt","doi":"10.1109/OJCOMS.2025.3541962","DOIUrl":null,"url":null,"abstract":"The low Earth orbit (LEO) satellite constellation has become a highly effective solution for non-terrestrial networks (NTN), offering reliable, uninterrupted, and high-speed global communication. However, the rapid movement of LEO satellites results in a significant handover rate across satellites. Therefore, satellite handover management is essential to ensure the stability and continuity of communication services. This paper proposes a novel weighted bipartite graph-based handover strategy in LEO constellations to enhance quality of service (QoS) and overcome the challenge of frequent satellite handovers. The proposed approach utilizes the Kuhn-Munkres (KM) algorithm to achieve optimal matching with maximum weight, thereby ensuring efficient load distribution and high-quality communication. Moreover, the implementation of hysteresis margin (HM) reduces unnecessary handovers and thus enhances the overall performance of the network. The numerical results demonstrate a significant reduction in handover rate and latency, while improving energy efficiency and achieving enhanced data rates. In particular, our scheme effectively adapts to varying Rician K-factors and demonstrates flexibility under different signal conditions. Furthermore, the obtained results highlight a significant reduction in handover costs and ensure efficient and reliable communication in LEO satellite networks.","PeriodicalId":33803,"journal":{"name":"IEEE Open Journal of the Communications Society","volume":"6 ","pages":"1470-1484"},"PeriodicalIF":6.3000,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10884973","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Open Journal of the Communications Society","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10884973/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
The low Earth orbit (LEO) satellite constellation has become a highly effective solution for non-terrestrial networks (NTN), offering reliable, uninterrupted, and high-speed global communication. However, the rapid movement of LEO satellites results in a significant handover rate across satellites. Therefore, satellite handover management is essential to ensure the stability and continuity of communication services. This paper proposes a novel weighted bipartite graph-based handover strategy in LEO constellations to enhance quality of service (QoS) and overcome the challenge of frequent satellite handovers. The proposed approach utilizes the Kuhn-Munkres (KM) algorithm to achieve optimal matching with maximum weight, thereby ensuring efficient load distribution and high-quality communication. Moreover, the implementation of hysteresis margin (HM) reduces unnecessary handovers and thus enhances the overall performance of the network. The numerical results demonstrate a significant reduction in handover rate and latency, while improving energy efficiency and achieving enhanced data rates. In particular, our scheme effectively adapts to varying Rician K-factors and demonstrates flexibility under different signal conditions. Furthermore, the obtained results highlight a significant reduction in handover costs and ensure efficient and reliable communication in LEO satellite networks.
期刊介绍:
The IEEE Open Journal of the Communications Society (OJ-COMS) is an open access, all-electronic journal that publishes original high-quality manuscripts on advances in the state of the art of telecommunications systems and networks. The papers in IEEE OJ-COMS are included in Scopus. Submissions reporting new theoretical findings (including novel methods, concepts, and studies) and practical contributions (including experiments and development of prototypes) are welcome. Additionally, survey and tutorial articles are considered. The IEEE OJCOMS received its debut impact factor of 7.9 according to the Journal Citation Reports (JCR) 2023.
The IEEE Open Journal of the Communications Society covers science, technology, applications and standards for information organization, collection and transfer using electronic, optical and wireless channels and networks. Some specific areas covered include:
Systems and network architecture, control and management
Protocols, software, and middleware
Quality of service, reliability, and security
Modulation, detection, coding, and signaling
Switching and routing
Mobile and portable communications
Terminals and other end-user devices
Networks for content distribution and distributed computing
Communications-based distributed resources control.