| 3G系统中PDCP子层ROHC的研究和实现 |
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| 引用本文： | 李小文,胡现岭.3G系统中PDCP子层ROHC的研究和实现[J].重庆邮电大学学报(自然科学版),2010,22(2):174-178. |
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| 作者姓名： | 李小文 胡现岭 |
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| 作者单位： | 重庆邮电大学移动通信重点实验室,重庆,400065;重庆邮电大学移动通信重点实验室,重庆,400065 |
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| 基金项目： | 重庆市科委自然科学基金项目 |
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| 摘 要： | LTE的高数据速率和容量,使频谱资源与业务量之间的矛盾更加突出.介绍了健壮性头压缩协议(ROHC)以及它在3G系统分组数据汇聚协议(PDCP)子层中的应用,分析了其应用价值和前景.全面分析了在PDCP中ROHC的实现原理及其应用过程.结合3C系统中PDCP层头压缩过程,对ROHC的实现进行了研究,分别从压缩方和解压缩方2个过程重点探讨了ROHC的实现架构.提出了一个改进的解压缩方的修复算法,该算法能够适用于大量丢包的情况,同时可以提高ROHC健壮性.
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| 关 键 词： | 分组数据汇聚协议 健壮性头压缩 压缩方 解压缩方 |
| 收稿时间： | 2009/3/18 0:00:00 |
Research and realization of ROHC in PDCP sublayer in 3G system |
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| LI Xiao-wen,HU Xian-ling.Research and realization of ROHC in PDCP sublayer in 3G system[J].Journal of Chongqing University of Posts and Telecommunications,2010,22(2):174-178. |
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| Authors: | LI Xiao-wen HU Xian-ling |
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| Institution: | Key Lab of Mobile Communications, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China |
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| Abstract: | High data speed and capacity in LTE makes the contradiction between spectrum resources and business capacity more outstanding. This paper first introduces the robust header compression (ROHC) and its application in PDCP sublayer in 3G system. Then, the paper analyses the process and the principles of implementation. Combined with the process of PDCP header compression, the framework realization of ROHC procedure was discussed separately from compress part and decompress part. Finally, an improved decompression algorithm was put forward to enhance the robustness, especially for great quantity of packet loss. |
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| Keywords: | packet data convergence protocol (PDCP) robust header compression (ROHC) compressor decompressor |
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