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Subject: Engineering (provided by Thomson Reuters)
Title:
GEO卫星移动通信RLC层重传机制研究
Alternative Title: research on geo satellite mobile communications rlc layer retransmission mechanism
Author: 王洋 ; 刘立祥
Keyword: 地球同步轨道 ; 卫星移动通信 ; 无线链路控制 ; GEO混合自动请求重传 ; QualNet仿真
Source: 计算机工程与设计
Issued Date: 2013
Volume: 34, Issue:1, Pages:71-75
Indexed Type: CNKI ; WANFANG ; 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;中国科学院研究生院;
Sponsorship: 国家预研基金项目(6150103)
Abstract: 为解决卫星链路上的大延迟环境对GEO移动通信协议RLC层应用现有选择重传机制(SR-ARQ)造成吞吐量低下的问题,提出了适用于GEO卫星移动通信协议RLC层的HARQ重传机制(G-HARQ),并在QualNet平台上对GEO卫星移动通信协议RLC层G-HARQ和SR-ARQ吞吐量进行仿真实验。仿真结果表明,G-HARQ重传机制可以减少RLC确认模式下为恢复错误数据包而传送的ACK/NACK消息数量,从而降低在GEO卫星移动通信协议RLC层端到端的总延迟,提高RLC层吞吐量。
English Abstract: To solve the low throughput problem in radio link control (RLC) layer caused by large delay in GEO mobile satellite communication when using existing retransmission mechanism (SR-ARQ), a HARQ schema applied to GEO mobile satellite communication (G-HARQ) in RLC layer is proposed. Then, the G-HARQ and SR-ARQ mechanism of RLC layer is simulated in GEO mobile commutation platform based on QualNet. Simulation result shows that the G-HARQ retransmission mechanism can reduce the number of ACK/NACK control message generated when recover error RLC-Block in RLC acknowledge mode, which can ameliorate the pear-to-pear delay in RLC layer of GEO mobile communication protocol, and improve the system throughput.
Language: 中文
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Content Type: 期刊论文
URI: http://ir.iscas.ac.cn/handle/311060/15250
Appears in Collections:软件所图书馆_期刊论文

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Recommended Citation:
王洋,刘立祥. GEO卫星移动通信RLC层重传机制研究[J]. 计算机工程与设计,2013-01-01,34(1):71-75.
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