ZTE

ZTE Communications ›› 2010, Vol. 8 ›› Issue (3): 32-36.

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PTN and IP-Based Mobile Backhaul

Cong Kai, Zhao Fuchuan   

  1. Bearer Network Planning & System Design Department, ZTE Corporation, Shenzhen 518055, P. R. China
  • Online:2010-09-25 Published:2020-02-28
  • About author:Cong Kai received his master’s degree from Beihang University, and currently works as a planning manager for carrier network products at ZTE Corporation. He has been engaged in researching optical communication technologies for many years.

    Zhao Fuchuan received his doctoral degree from Shanghai Institute of Microsystem and Information Technology (SIMIT) of the Chinese Academy of Sciences. He is chief engineer at ZTE Corporation, specializing in PTN products. He has been engaged in researching optical communication technologies for many years. In 2004, ZXMP—a product which Zhong oversaw research and development—was awarded first prize at the Science and Technology Progress Awards of Guangdong Province. At present, he is researching and planning PTN products.

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Abstract: Packet Transport Networks (PTN) combine the advantages of packet technology and Synchronous Digital Hierarchy (SDH) technology. Taking the packet switch as its core, PTN has a high statistical multiplexing ability, which allows it to become a more efficient packet transfer service. Its strong Operation Administration and Maintenance (OAM)—similar to SDH and carrier-class security protection services—ensures efficient mobile backhaul business management and transmission quality. MPLS Transport Profile (MPLS-TP) packet transport network eliminates connectionless features, such as Penultimate Hop Popping (PHP), label merge and Equal-cost multi-path (ECMP), and is enhanced in terms of OAM, protection, and synchronization. This is ideally suited for carrying IP-based mobile backhaul services and key account services. PTN, original Multi-Service Transport Platform (MSTP), Metro Ethernet, and IP over Wave Division Multiplexing (WDM)/Optical Transport Network (OTN) of organic complexes, contribute to an "all IP" era of telecommunications services.