Improving Data Transmission with Helping Nodes for Geographical Ad Hoc Routing

• Main Authors: Shin-Hung Chung, 鍾欣宏
• Other Authors: Kuo-Feng Ssu
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/84285562043842989776

碩士 === 國立成功大學 === 電腦與通信工程研究所 === 94 === Many routing protocols have been proposed in mobile ad hoc networks. Most protocols assume that node density of the networks is high enough so network partitions will not occur. As a matter of fact, it is illegitimate to have such hypothesis because node mobility and random deployment can easily make partitions happened. This thesis describes an approach to locating helping nodes for carrying data packets from one partition to another with geographic routing. Unlike assisting nodes in other schemes, the helping node chosen from a group of regular mobile nodes keeps moving based on its will. The approach also handles handoff when needed in the routing trip of the helping node. The mechanism has been implemented with the network simulator 2. The results demonstrate that the algorithm can improve the information availability especially in sparse networks.