Low Complexity Header Compression with Lower-Layer Awareness for Wireless Networks
Low Complexity Header Compression with Lower-Layer Awareness for Wireless Networks
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DOI：
10.1109/icc.2019.8761888
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发表时间：
2019-05
期刊：
影响因子：
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通讯作者：
Carlos Feres;Z. Ding
中科院分区：
文献类型：
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作者：
Carlos Feres;Z. Ding
分组交换无线网络(如4G和5G蜂窝系统)应用健壮的报头压缩(ROHC)来缩短PDCP报头长度并提高有效负载效率。我们最近的工作证明了在基于部分可观测的马尔可夫决策过程(POMDP)的ROHC控制中应用跨层方法的好处。POMDP解决方案的好处在于比现有的ROHC具有显著的计算复杂性。目前的工作集中于通过设计具有低层感知的ROHC压缩器来简化，包括由于许多无线网络中存在的链路自适应而导致的信道自适应传输块大小。我们的新型号直接针对实际实施，可以提供接近优化的POMDP压缩机的传输效率。
Packet-switched wireless networks such as 4G and 5G cellular systems apply RObust Header Compression (ROHC) to reduce PDCP header length and improve payload efficiency. Our recent works have demonstrated the benefit of applying a trans-layer approach that exploits lower layer information in ROHC control based on a partially observable Markov decision process (POMDP) formulation. The benefit of the POMDP solution comes at significant computation complexity beyond existing ROHC. The present work focuses on simplicity by designing ROHC compressors with lower layer awareness including channel adaptive transport block size as a result of link adaptation present in many wireless networks. Our new models directly address practical implementation and can deliver transmission efficiency close to an optimized POMDP compressor.