Affiliation of Author(s):计算机科学与技术学院/人工智能学院/软件学院

Journal:Beijing Hangkong Hangtian Daxue Xuebao

Abstract:The traditional satellite network usually concentrates the control layer and data layer in the same network device, which leads to more complex network structure, fixed bandwidth and poor resource utilization rate. The software-defined satellite network (SDSN) architecture can effectively manage the satellite resources, improve the utilization of resources, and further provide effective technical support for the multi-beam handover mechanism. In this paper, a multi-decision index handover (MDIH) mechanism is proposed for multi-beam coverage SDSN. Firstly, we analyze the shortcomings of traditional satellite networks' handover mechanism and establish a handover framework based on SDSN. Secondly, we further introduce the concept of time threshold to ensure the accurate trigger of handover strategy based on the traditional channel reservation mechanism. In addition, the MDIH algorithm is used to determine the priority of users' handover in the handover decision process, which makes the decision granularity more fine-grained. Finally, we give an instance of the MDIH algorithm to further demonstrate the scalability of our handover mechanism. © 2018, Editorial Board of JBUAA. All right reserved.

ISSN No.:1001-5965

Translation or Not:no

Date of Publication:2018-12-01

Co-author:Qian Hongyan,Cheng, Xiang,cb

Correspondence Author:zhangjiale