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SigTran协议簇从功能上可分为两大类:通用信令传输协议和信令适配协议。介绍了SCTP及其安全保障机制,信令适配层及其安全保障机制。SCTP层的多归属特性,使偶联具有了网络级容错能力。讨论了SigTran在3G核心网实际组网中的主备保护方案和负荷分担方案,以及这两种容灾方案的优缺点。偶联主备保护是间接解决问题,负荷分担则是直接处理偶联不通问题,具有更高的可靠性。负荷分担方案是3G核心网组网时的首选方案。
SigTran protocol suite can be divided into two categories of functions: general signaling transfer protocol and signaling adaptation protocol. Introduced the SCTP and its security mechanism, signaling adaptation layer and its security mechanism. The multi-homed feature of SCTP layer makes the coupling have network-level fault tolerance. Discusses the main and backup protection schemes and load sharing schemes of SigTran in the actual networking of 3G core network and the advantages and disadvantages of these two schemes. Coupling active and standby protection is an indirect solution to the problem, load sharing is to deal directly with the problem of coupling barrier, with higher reliability. Load sharing program is the preferred solution for 3G core network networking.