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总览 评价 张贵 , 高锦春 * , 谢刚 ( 北京邮电大学泛网无线通信教育部重点实验室,北京 100876; ) 摘要: 空天网络中的业务具有持续通信时间短、业务数据量巨大、业务数据的完整性要求高的特点,需要空天网络能够提供快速、高可靠性的接入性能。而现有
张贵, 高锦春*, 谢刚
(
北京邮电大学泛网无线通信教育部重点实验室,北京 100876; )
摘要:
空天网络中的业务具有持续通信时间短、业务数据量巨大、业务数据的完整性要求高的特点,需要空天网络能够提供快速、高可靠性的接入性能。而现有地面无线网络和卫星通信系统中的接入算法无法满足这样的需求。本文提出了一种基于环境感知的多目标优化最优接入算法,综合考虑带宽需求、路由跳数和链路生存时间对接入性能的影响。并提出了基于贪婪算法的次优算法降低算法复杂度,仿真比较了所提两种算法与随机接入算法的接入性能,验证了所提算法的有效性。
关键词:
空天网络;接入算法;贪婪算法
ZHANG Gui, GAO Jinchun*, XIE Gang
(
Key Lab of Universal Wireless Communications. Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876; )
Abstract:
The service in aerospace networks is featured with short communication period, huge volume of data, and high demanding of data integrity, which needs the aerospace network to provide fast, reliable access performance. The access algorithms in existing terrestrial and satellite communication systems cannot meet the need of aerospace network. A new environment apperception based multi-objective optimization algorithm for optimal access algorithm was proposed, considering the bandwidth requirement, routing hops and link survival time. A sub-optimal access algorithm based on greedy algorithm was proposed to reduce the complexity of the algorithm. A simulation of the proposed algorithms and random access algorithm was made, and the effectiveness of the proposed algorithm was proved.
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