| With the vigorous development of edge computing technology,communication services have gradually migrated from the network center to the edge network,and new business forms and network architectures have emerged one after another.The SIP protocol has many advantages such as simplicity,flexibility,easy implementation,and good expansibility,and it still has broad application prospects in some dedicated domain networks.However,these dedicated domain networks have the problems that the communication equipment is far away from the network center,the communication network carrying capacity is weak,the network communication resources are limited,and there are problems such as low transmission rate,large delay,serious packet loss,and high bit error rate,which are not conducive to data transmission.the elements of.In this special network environment,the communication process based on the traditional SIP protocol requires a large overhead of transmitting messages,which greatly reduces the time delay and success rate of its session establishment.Therefore,how to establish a reliable end-to-end SIP session and reduce the session establishment delay is an important challenge to be solved.Based on this problem,this subject first proposes a SIP protocol optimization method for narrow-band high-bit error environments.After analyzing the business requirements,a model of SIP session establishment delay is established.The hybrid compression algorithm and the link message recovery mechanism based on the application layer forward error correction.Then the simulation experiments are carried out,and the experimental results verify the effectiveness of the SIP protocol optimization mechanism proposed in this paper in reducing the delay of session establishment.At the same time,this subject also realizes the transmission optimization prototype software based on the above-mentioned SIP protocol optimization mechanism.First,the multi-dimensional requirements analysis of the software is carried out,and then the overall architecture of the software is designed,and then the software’s characteristics are given in modules.Design the scheme in detail,and then implement the main functions of the software such as user management module,service management module,SIP protocol compression module,link message recovery module and so on.Finally,the test environment is configured,and the software is tested through detailed test plans and use cases.The test results show that in the narrow-band high-error environment,the software has normal functions and good running stability.In a word,this subject proposes a SIP protocol optimization method for narrow-band high-error environment,realizes the development of SIP protocol transmission optimization prototype software,effectively reduces the delay of SIP session establishment,and expands the traditional SIP protocol in special network environment. |