InSang Choi

Resource Management and Control in NGN Transport

Next generation network (NGN) is IP based broadband and integrated network of existing communication networks. This paper defines requirements of management information to perform resource admission and path computation for single-phase resource control scheme in NGN transport stratum. We also propose high-speed resource control mechanism based on parallel and single-phase scheme to minimize delay overhead between centralized resource admission control functions and transport functions.

An Automated Mechanism of IP Topology Discovery in BcN

Network topology represents the interconnection between directly or indirectly connected devices in a network. To know about up-to-date network topology (i.e. layer2 and layer3) is important for efficient network management. In this paper, we propose an automatic topology discovery mechanism of centralized network in NGN. The discovered topology is about IP logical topology instead of physical topology. Our mechanism has two assumptions. One is that the discovered nodes are located in transit area only. Another is that layer2 devices do not display.

Performance Evaluation of Web Services-based Topology Management in Centralized Network

This paper deals with Web services-based topology management mechanism in centralized network. We verify the realization of the proposed mechanism by implementing topology management system and show the most suitable development environment by measuring and comparing the performance of bandwidth usage and round-trip delay.