Driven by the IP-based trend of telecommunication traffic, traffic carried by transport network changes from TDM-based to IP -based. Combining three technologies including IP/ MPLS, Ethernet and transport network, packet transport network (FTN) is next-generation transport network technology which is proper to packet transport. In the current three PTN technologies including T-MPLS, PBB-TE, PVT, T-MPLS seize the initiative in the standardization process and is more mature. IP network supports Quality of Service (QoS) has been a hot research of network technology. There are several protocols to support IP network QoS. Describe the Integrated Services model (IntServ / RSVP), Differentiated Services model (Diff-Serv) and MPLS TE, and then analyze the technology principle of Diff-Serv TE and propose an implementation of technology to support data transmission QoS based on T-MPLS Diff-Serv TE .%在电信业务IP化趋势推动下,传送网承载的业务从以TDM为主向以IP为主转变.分组传送网(PTN)正是IP/MPLS,以太网和传送网3种技术相结合的适合分组传送的下一代传送网技术.在当前的T-MPLS、PBT二种主流的PTN技术中,T-MPLS在标准化过程中抢得先机,较为成熟.IP网络对服务质量(QoS)的支持一直是网络技术研究的热点,有几种协议支持IP网络的QoS.文中描述了综合服务结构模型(IntServ/RSVP)、区分服务结构模型(Diff-Serv)和MPLS TE的原理,分析了Diff-Serv TE的技术原理并提出了基于T-MPLS Diff-Serv TE实现多种业务服务质量保证的方案.
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