一种5G系统鲁棒性报头压缩优化算法  

Research on Robust Header Compression Optimization Algorithm for 5G System

作　　者：刘光敬 程立杰 施涛 LIU Guangjing;CHENG Lijie;SHI Tao(Chongqing Communication Design Institute Co.,Ltd.,Chongqing 400041,China)

机构地区：[1]重庆市信息通信咨询设计院有限公司,重庆400041

出　　处：《无线电工程》2022年第5期751-755,共5页Radio Engineering

基　　金：重庆市重大主题专项(cstc2019jscx-zdztzxX0002)。

摘　　要：在5G无线系统中采用鲁棒性报头压缩(Robust Header Compression,ROHC)机制提高频带资源利用率,减少冗余报头传输,但ROHC协议算法复杂度过高且对动态变化的无线链路适应性较差。针对此问题,提出了一种根据信道状态质量动态改变ROHC乐观参数的压缩算法(Adjust Optimistic,AOPT),通过建立信噪比(Signal Noise Ratio,SNR)评价函数来反映当前的信道质量状态,动态调整O模式下乐观参数的取值。仿真结果表明,该算法能够有效减少数据报头传输,有较高的压缩效率。Adopting Robust Header Compression(ROHC)algorithm in 5G wireless system can improve band availability as well as reduce redundant header transmission.However,the complexity of ROCH protocol algorithm is high,and its adaptability to dynamic links is relatively weak.To address this problem,an Adaptive Optimal(AOPT)compression algorithm is proposed,which dynamically changes the optimistic parameters of ROHC protocol according to the channel state quality.The Signal Noise Ratio(SNR)evaluation function is established to reflect the current channel quality state,and the optimistic parameter value in O mode is dynamically adjusted.Simulation results show that the algorithm can effectively reduce the transmission of data header and is of high compression efficiency.

关 键 词：报头压缩 鲁棒性报头压缩协议 评价函数 乐观参数 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]