低轨卫星移动通信系统中基于优先级的多业务条件下信道预留策略研究
首发时间:2015-12-23
摘要:本文研究的信道预留策略有效地支持了低轨卫星移动通信系统中的多业务场景。建立了基于优先级的多业务条件下信道预留策略(PMCR)的性能分析方法,并推导出各类业务的新呼叫阻塞率和切换呼叫失败率。仿真结果证明了该策略的可行性和有效性。仿真结果显示,引入优先级之后,系统的新呼叫阻塞率得以降低,高优先级业务的切换性能得到了提升。
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Performance Analysis of Priority-based Multi-class Traffic Channel Reservation Scheme in LEO-MSS
Abstract:This paper studies channel reservation scheme for handovers which efficiently supports multi-class traffic in low earth orbit mobile satellite system (LEO-MSS). Analytical methods are developed for evaluating the performance of priority-based multi-class traffic channel reservation scheme (PMCR). The new call blocking probability and handover failure probability of PMCR for each traffic are deduced. The simulation results verify the correctness and accuracy of the proposed approach and show that the new call blocking probability of the system is low and handover call failure probability of services of high levels can be improved by the introduction of priorities.)
Keywords: satellite communication low earth orbit (LEO) multi-class priority handover channel reservation
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低轨卫星移动通信系统中基于优先级的多业务条件下信道预留策略研究
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