Multi-service distinguishing cross-layer optimization wireless network protocol header compression method

Abstract

The invention relates to the technical field of wireless communication, in particular to a multi-service distinguishing cross-layer optimization wireless network protocol header compression method, which comprises the following steps of: modeling a compressor into a finite-state machine with three states; modeling the decompressor into a finite state machine of three states; modeling the ROHC channel into a Markov channel of K states; based on modeling of a compressor, a decoder and a channel, modeling the type of a selected next packet header needing to be transmitted as a partially observable Markov decision model, and obtaining the type of the next packet header needing to be transmitted through solving; according to the requirements of service types of different data streams on real-time performance, optimistic parameters of the compression end are distinguished, and the state of the ROHC compression end is adjusted; according to the method, the state of the compression end of the ROHC is adaptively decided, high efficiency and reliability can be achieved without introducing an independent feedback channel, services are distinguished, real-time services can obtain higher robustness, and non-real-time services can obtain a higher compression ratio.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular, to a method for optimizing wireless network protocol header compression by differentiating multiple services across layers. Background technique [0002] Today, IP has become the most widely used Internet interconnection protocol. When IP carries segment packets, the overhead of the IP protocol header will be very large, even higher than the proportion of the payload, which greatly reduces the bandwidth utilization of the communication system. Compared with wired communication, the bandwidth of wireless communication is limited, and it is more necessary to reduce the protocol header overhead of the communication protocol to increase the utilization rate of wireless bandwidth resources. Protocol header compression is the main technical means to reduce communication protocol overhead. To this end, 3GPP has introduced a Robust Header Compression (ROHC, Robu...

AI Technical Summary

Problems solved by technology

[0004] Most of the current research is to optimize ROCH compression parameters to improve the efficiency of ROCH, but there are the following deficiencies: 1) When modeling ROHC, less consideration is given to the degradation of the compression end to the IR state, which is not suitable for situations with burst errors. Wireless Communication Scenario

Burst errors in wireless communication will cause the context static field to lose synchronization, making the ROHC model unable to work properly

2) It does not take into account the different requirements of different businesses on the quality of service (QoS, Quality of Service)

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