卫星网络信道分配算法与仿真分析

发布时间：2018-04-20 03:00

  本文选题：卫星网络 + 信道分配　； 参考：《系统仿真学报》2014年12期

【摘要】：在卫星网络中,针对低轨卫星存储容量小、与同步轨道卫星可通时间有限等特点,提出了一种新的信道分配算法,该算法通过卫星任务优先级、卫星存储剩余量和卫星可通时间剩余量三个因素的权重分配确定卫星优先级,当同步轨道卫星无可用信道且存在低轨卫星呼叫时,在满足门限阈值约束条件下,高优先级呼叫卫星实施信道抢占。仿真数据结果表明,提出的算法保证了紧急卫星数据的实时传输,有效地避免了卫星内存溢出、数据丢失现象,满足卫星通信需求。
[Abstract]:In the satellite network, a new channel assignment algorithm is proposed to solve the problem of low storage capacity and limited access time between Leo satellite and synchronous orbit satellite, which is based on the priority of satellite task. The weight distribution of three factors, satellite storage residue and satellite passable time residue, determines the satellite priority. When the synchronous orbit satellite has no available channel and there is a Leo satellite call, the threshold threshold constraint condition is satisfied. High priority calling satellites implement channel preemption. The simulation results show that the proposed algorithm can ensure the real-time transmission of emergency satellite data, effectively avoid satellite memory overflow and data loss, and meet the needs of satellite communication.
【作者单位】： 大连大学通信与网络重点实验室;大连理工大学电子信息与电气工程学部;
【基金】：国家863高技术项目(2011AAXX)
【分类号】：TN927.2
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本文编号：1775916