Avoidance of Hidden Terminal Interference in Cluster-based Multihop Wireless Networks

• Main Authors: Da-Wei Fan, 范大偉
• Other Authors: Chyi-Ren Dow
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/60064546723355310569

碩士 === 逢甲大學 === 資訊工程學系 === 87 === Hidden terminal interference degrades the system performance and increases the average packet delay time in multihop wireless networks. This work presents a cluster-based code assignment technique to avoid hidden terminal interference. The proposed clustering algorithm reduces the frequency of reconfiguration in clusters when the topology changes. A two-layer code assignment scheme is developed that applies the cluster formation to eliminate the hidden terminal problem. The proposed scheme can be applied concurrently within each cluster instead of sequential enforcement. It also allows for regional updating of orthogonal codes when the topology varies. Experimental results demonstrate the efficiency of the clustering and the code assignment scheme proposed herein.