The Technology Of Packet Transport Network Research

From the past10years the development trend of global business network,is in development period, a major communications carriers from the originalvoice business to data for IP of all types of business, transport network bearerbusiness from a TDM to IP transition, on the other hand, the traditional GSMand CDMA will eventually to LTE evolution, and the requirements of LTEtransmission network to provide greater bandwidth and IP of large particles.The use of TDM (SDH, MSTP) network has been unable to meet thedevelopment needs, how to construct a unified IP bearer network meetbusiness of transport requirements? which technology can construct the bearernetwork? These questions have become the communication operators facedimminent challenges.Papers from the packet transmission network based on the analysis ofbasic network function, at present still immature time synchronization technology to conduct in-depth research, in order to test data as the basis, putforward to the synchronous Ethernet1588v2technology as the core of thescheme, to solve the complicated network environment (such as micro waveand exchange network hybrid network) under the clock is not uniformmalady. In addition to the existing network data service with high securitylevel characteristics, combined with mobile PTN test network design,developed a set of suitable for the present stage mixed network protectionmethod, for future large particles of the business development oftelecommunication security. Also based on the LTE load mode choice andevolution direction was also discussed.