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Title:
GEO卫星与地面移动通信网络多覆盖下切换研究
Alternative Title: Strategy of handover in integrated GEO satellite and terrestrial networks
Author: 张一杰 ; 陈建州 ; 刘立祥
Keyword: 多覆盖 ; 信号分布 ; 切换次数估计 ; 切换代价模型 ; 切换判决 ; multiple coverage ; signal distribution ; handover times ; cost model ; handover decision
Source: 计算机工程与设计
Issued Date: 2013
Volume: 34, Issue:10, Pages:3361-3365
Indexed Type: CSCD
Department: 中国科学院软件研究所天基综合信息系统重点实验室,北京100190;中国科学院大学信息工程与技术学院,北京100049 中国科学院软件研究所天基综合信息系统重点实验室,北京,100190
Abstract: 通过分析GEO卫星与地面移动通信网络多覆盖下的信号分布特点和终端运动特点,提出了终端在通话过程中切换次数的估计方法.利用切换过程中产生的信令数目、切换延迟、信号质量和丢包情况建立了切换代价模型,以量化切换对通话质量的影响.在此基础上提出了基于代价估计的切换判决算法.仿真结果表明,该算法相比于传统算法,能显著降低高速终端的切换次数和切换延迟,提高了切换效率.
English Abstract: By analyzing the receiving signal strength and mobility of terminals in GEO satellite and terrestrial networks, a meth- od to estimate times of handover is derived. Then the number of handover signals, handover delay, signal quality and packet loss are used to form a model of handover cost. Based on the model, a handover strategy is proposed to choose different network to handover by different mobile terminals. Simulation results demonstrate that the strategy based on the model reduces handover times and delay in high speed terminal compared with the traditional methods.
Language: 中文
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Content Type: 期刊论文
URI: http://ir.iscas.ac.cn/handle/311060/16788
Appears in Collections:软件所图书馆_期刊论文

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Recommended Citation:
张一杰,陈建州,刘立祥. GEO卫星与地面移动通信网络多覆盖下切换研究[J]. 计算机工程与设计,2013-01-01,34(10):3361-3365.
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