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在分析IMS(IP Multimedia Subsystem)的注册过程后,提出一种基于缓存的改进注册过程.在UE(User Equipment)向S-CSCF(Serving-Call Session Control Function)注册的第一次交互过程中,让P-CSCF(Proxy-CSCF)缓存通过DNS组合查询得到的I-CSCF(Interrogation-CSCF)的地址信息,再让I-CSCF缓存它为用户选择的S-CSCF的地址信息.在UE与S-CSCF的第二次交互过程中,相关实体直接从缓存中提取之前保存的地址信息,以此加快用户的注册过程.分析结果显示,改进的注册过程要优于标准的注册过程.同时,它对网络的改动较小,容易部署和实现.
After analyzing the registration process of IMS (IP Multimedia Subsystem), an improved cache-based registration process is proposed.In the first interaction between UE and S-CSCF, So that the P-CSCF can cache the address information of the I-CSCF (Interrogation-CSCF) queried through the DNS combination and let the I-CSCF buffer the address information of the S-CSCF that it selects for the user. During the second interaction of -CSCF, the related entities directly extract the previously saved address information from the cache to speed up the user registration process.The analysis results show that the improved registration process is better than the standard registration process.At the same time, it Changes to the network smaller, easy to deploy and achieve.