Selecting a Sub-optimal Substitutive Path with Signal Strength Criterion in Ad-hoc Wireless Network

• Main Authors: Huan-Chin Tseng, 曾煥智
• Other Authors: Robin Liu
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/22298349220233888042

碩士 === 元智大學 === 資訊工程學系 === 89 === In this paper, we focus on finding a substitutive path in advance through utilizing the Signal Strength (SIR), to make the overall qualities of transmission more stable for the Ad Hoc Mobile Wireless Networks. Basically, SIR is a useful parameter to judge the degree of connection. When SIR is lower than a predefined threshold, we propose an algorithm to determine whether this connection will be broken or not. In case that this connection may be broken, we will try to find out a substitutive path before the disconnection such that the qualities of transmission will be kept stable. In addition, during the procedure of finding the substitutive path, we address a method of regional path searching to avoid the macrocosm broadcast searching. In this way, the overhead of the sender can be reduced quite efficiently for maintaining the routing paths.