| The development of the next network is moving towards the dierection of diversification and all-IP. As the growing number of access technologies and network services, supporting heterogeneous networks with mobility management and the end-to-end Quality of Service in heterogeneous networks is becoming one of the key technologies of the next generation mobile communication system. Because of the hierarchical protocol structure of Next Step in Signaling (NSIS), it can separate the signaling application and signaling transportation, then hierarchically process network address, routing information, quality of service, firewall and other application requirements, and can provide a reliable end to end network quality of service guarantee.QoS technologies and signaling protocols exsited now are researched firstly in this article. The key researching work is the structure and features of the Next Step in Signaling and simulating the connectivity and advantages of NSIS protocol on NS-2 platform. Then design two new models with FHMIPv6 to achieve mobility of NSIS. By using CRN discovery mechanism and designing reasonable simulation scenes to do simulation work and analysis. As a conclusion, NSIS protocol performance well to improve QoS and utility of resource in complex network.After simulating mobility of NSIS protocol, it is extended to the actual integration network. This article takes the heterogeneous networks of 3GPP UMTS and Internet for example;propose an end-to-end QoS guarantee framework based on NSIS which is named UMIQN, then design the implementation and detailed QoS signaling process and mapping process of the framework. In the mean time of QoS guarantee, it is also need to consider the resource utility of actual network. In the third research point of the article, a new GGSN module with resource reservation decision function is designed for the above UMIQN framework. Then through modeling and simulating in Matlab, it is of more practical significance. |
PDF Full Text Request