The Designing And Implement Of CM-IMS Network In A Mobile Company

IMS by the 3GPP(3rdGenerationPartnershipProject) in the R5 stage of introduction, the aim was the introduction of Internet experience to mobile networks,combined with the advantages of both. IMS came immediately after the 3GPP2, ETSI(EuropeanTelecommunicationsStandardsInstitute) TISPAN (TelecommunicationsandInternetconvergedServicesandProtocolsforAdvancedNe tworking),ITU-T(InternationalTelecommunicationUnion-TelecommunicationSta ndardizationSector) and many other recognized standards organization, IMS Core structure of these organizations has also been completely respected.Based on the analysis of the traditional network, this article pointed out the necessity of applying IMS technology in the base of GSM, it proposed the concept of the CM-IMS and described the characteristic and the important technology. Afterwards, according to the actual situation of mobile communication network in our province, this article puts forward the design proposal of the CM-IMS network and the detailed Network Schemes. The paper research content mainly includes:1,The development of IMS technological standards and the necessity of applying IMS technology for mobile communication operators;2,The concept of the CM-IMS and its characteristic and the important technology;3,The whole design and the detailed Network Schemes of the CM-IMS network;4,The analysis of testing for the CM-IMS network, and some improvement proposal.At present, CM-MS network has already been pre-commercial in some mobile communication network. Up to now, it has already served to of 18 cities in the entire province and provides Centrex and integratedcommunications sevices. The system runs stably and reliably. It not only brings the profit for the company, but also comes into being the huge social benefits.