An Improving Approach of Network Performance for VOIP by Traffic Management in Wireless Ad Hoc Network

• Main Authors: Ching-Jan Yang, 楊清然
• Other Authors: Tse-Shung Chen
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/26349800650517518689

碩士 === 國立成功大學 === 工學院工程管理專班 === 95 === “E-Taiwan Program” is actively used to promote information and communication infrastructure development as well as network security. The objective is to establish a comprehensive network of wired, wireless, mobile and fixed broadband Internet networks. In Taiwan, the number of Internet hosts has exceeded 5 million so far and 95% of them have broadband Internet access. The subscribers definitely desire to exchange information taking place at very high speed even though it costs higher expense. To reach a 100% penetration rate and data transmitting acceleration, it will be launched to cut down the charge at cheaper toll or for nothing to meet consumer’s demands. The Wireless Ad Hoc Network will be under an environment with either low-rate or free of charge in the near future; however, each node organized in the designed network can be recognized as a router. It may operate and result in dramatic delay, packet loss, and low effectiveness while several traffics simultaneously go through a certain node and run in the complex challenge. In this paper, an effectiveness-improving approach will be addressed to apply to the Wireless Ad Hoc Network of the Voice Over Internet Protocol(VOIP). Using the traffic shaper and the algorithm of the token bucket, the output side of node or the data flow from the same routers is reformed by an optimal adjustment in how much the data discharge properly distributing a maximum of bandwidth. During the path-planning process with Ad Hoc On-Demand Distance Vector Routing(AODV), the replay packet replies to the source node with calculating the Total Service Paths(TSP) number for each node. It also announces outside while the route is changed. The mentioned number is measured and operated to control data flow automatically as soon as any node receives the messages. The ultimate purpose of the paper aims to supply a minimum bandwidth guarantee, raising performance of network, and improve the rate of utilization for network bandwidth and creates greater benefits for the public, such as reduced transmission time, less packet loss, low jitter, and throughput stability.