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.
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)
出处
《无线电工程》
北大核心
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)。
