1、Large ScaleSIP PlatformBased on P2P,Tsinghua UniversityCansheng FJan 2009,Introduction,Session Initiation ProtocolMobilityTerminal mobilityPersonal mobilityService mobilitySession mobility,Background and motivation,SIP6: An IPv6 based large scale SIP platform with more than 15000 users from various
2、universities in China CNGI08: Pre-commercial large scale communication applications based on wireless broadband,Current Applications,Voice(both PC and PDA), IM, PC2Phone, Video, SIP P2P, File sharing,SIP P2P,P2P video using SIP platform,Registration Users,More than 14,000 users from different univer
3、sities in ChinaNo advertisement yet,Usage graphs,Current system structure,6+3:6(Signal Control Layer): 3 SIP servers+3 location servers3: Authentication server, user registration server, NOC serverDNS SRV for load balance and full backup of DB for high availability,SIP Management System,System Topol
4、ogy,SIP Management System,Failure alarm and self-healing,Huge data for analysis,More than 919,984 call records from April 2007More than 3,197,145 SIP message records from April 2007More than 3,012,132 online records from September 2008More than 5G to exploreCall pattern analysis, online behavior ana
5、lysis, server load balance analysis, resource usage analysis,CNGI08,Mobile voice: including PC2PC and PC2Phone applications which cost more than 13,000 RMB each month Mobile video: a SIP P2P based video distribution system. Good for maintenance and copyright protection Message push: valuable message
6、s will be pushed to the SIP clients to save users time. Emails, subscribed BBS posts, campus announcements and etc. will be included.,Structure,Structure,Core node layer: for central authentication and managementSuper node layer: SIP proxies as access network for end users,Structure,P2P SIP overlay network: SIP proxy server as super nodesAn efficient hash function for efficient message routing,Thank You,
