The Construction Of The NGN Experimental Networking And The Application Of NGN Technology In Tianjin Mobile Company

Next Generation Network will be a compromised network based onsoft-switch and optical networking. As the communication reformdeveloping, the competition in communication field is getting harder andharder, each service provider gets the equal opportunity to become amultipurpose company to provide both regular and mobile services.While the soft-switch based NGN technology getting mature, the costwill be lower and the advantages of NGN will be more and more obviousin network merging, services conjunction, flexible bill charging and newbusiness generating. Taking it as a long term strategy, Tianjin Mobilebelieves that set up the Next General Network can improve the efficiencyof network resource, bring up the new business quickly, increase theservice income, lower the cost in setting up and running the network, andabove all, it will bring Tianjin Mobile a whole new opportunity.This essay, associated with the construction of the NGNexperimental networking, introduces the application of the soft-switchbased NGN technology in Tianjin Mobile Company. Analyzing from thestructure designing of the NGN networking, the essay focuses on severalaspects such as the bandwidth requirement of the NGN experimentalnetwork;the utilization and the relative interfacing protocols of severalNGN basic components, like media gateway controller, media gatewayand signal gateway;the solutions for different kinds of users connectingwith the NGN experimental network;numbering plan of the NGNexperimental network;the solutions for network administration and billcharging and so on, then comes out the designation of the NGNexperimental networking.This essay also puts its emphasis in talking about the problems ofnetwork security, QoS assurance and IP voice time-waiting within theNGN networking. The essay gives the solution to the network securityproblem in NGN network: first of all, isolate the NGN from othernetworks using MPLS/VPN technology, second, apply a strict control onusers' accessing and the service providing in accessing layer, then use thenecessary secure protection to avoid the potential risks within the NGNnetwork. The essay also gives the solution that using bandwidth +DiffServ technology in different network layers to ensure the QoS inNGN service. As to the IP voice time-waiting problem, the essay analyzesthe composition of the problem and gives the relative solution.