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Research And Design Of New Service On SIP-Based IMS Terminal

Posted on:2010-03-09Degree:MasterType:Thesis
Country:ChinaCandidate:X Y XuFull Text:PDF
GTID:2178360278965546Subject:Circuits and Systems
Abstract/Summary:PDF Full Text Request
IMS (IP Multimedia Subsystem) is raised by 3GPP at Release 5 version. IMS bases on SIP system. SIP is a text-based signaling protocol, based on Client / Server mode. IMS uses SIP to create, manage, and terminate all types of multimedia services. IMS system allows all types of clients to establish end-to-end IP communications and receive all the required quality of service. IMS system also involves the completion of Services to provide the necessary functions (such as registration, security, load control and roaming). IMS provides a business integration foundation, based on IP technology, while supporting voice, data and multimedia services, as well as new applications.Instant communications service combines the service of IM (Instant Message) and presence, so that participants can know the real-time information of each other, in order to select an appropriate way to communicate.This paper focuses on the research and design of instant message and presence. This paper mainly focuses on the following aspects:1. Introduction of IMS, including basic concepts, main technologies and system architecture of IMS system. Then introduce the background and aspects of SIP, and focus on the main signaling flow.2. Introduction of main service in IMS, including the operational status and capabilities of these services, as well as the key technologies of instant message and presence.3. On the basis of the research on IMS, combined with the IMS multimedia terminals developed by the library, research and design the service of instant message and presence.
Keywords/Search Tags:IMS, SIP, instant message, presence
PDF Full Text Request
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