| 摘要 |
PURPOSE: A method for managing session membership in internet multicast application is provided to strictly manage membership without modifying old multicast applications largely by providing operation mechanism for the expanded function together with the partial expansion of SAP(Session Announcement Protocol) and SDP(Session Description Protocol). CONSTITUTION: Protocols for strict session membership management consists of user applications(11), a MTP(Multicast Transport Protocol)(12), a RMP(Reliable Multicast Protocol)(13), a MFTP(Multicast File Transfer Protocol)(14), an expanded SAP and SDP for strict membership management(15), a UDP(User Datagram Protocol)(16), a TCP(17), an ECTP(Enhanced Communications Transport Protocol)(18) and an IP multicast(19). The MTP(12), the RMP(13), the MFTP(14) and the ECTP(18) all are the multicast reliable transfer protocols of transport hierarchy. Strict membership management and the reliable multicast transfer protocols operate mutually for effective group management.
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