The Topology Configuration Management in a Mobile ATM Network

• Main Authors: Che-Jung Li, 黎哲榮
• Other Authors: Sheng-Tzong Cheng
• Format: Others
• Language: en_US
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/31729050654347391883

碩士 === 國立成功大學 === 資訊工程研究所 === 88 === The rise of mobile and wireless computing has brought new opportunities for potential applications of ATM. The PNNI standard defined by the ATM Forum is an important starting point for supporting mobility in wireless ATM networks due to the native characteristic to accommodate the dynamic changes of network structures. Estimation of an PNNI topology for minimizing the routing and tracking costs suggests an optimal PNNI structure with a few nodes on the lowest (physical) peer groups. Under this premise, a partition algorithm is essential when the dynamic or static peer group reconfiguration is needed to achieve the optimization of peer group size. In this paper we propose two partition algorithms. The main policy of the algorithms is finding out the area(s) in which mobile switches congregate within a peer group. Topology update costs will be high as a result of the high probability that mobile switches move in this region, especially when the peer group size is huge. The algorithms we proposed split the region(s) from the old peer group to make a new peer group itself. Partition I proceeds from one link while Partition II proceeds from two links instead. Details of these algorithms are described in this paper. Experiment results show that it is beneficial to partition a huge peer group by using our partition algorithms even though the CMR raises to 15 and prove the hypothesis we made.