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论文类型：期刊论文

发表时间：2012-11-15

发表刊物：Journal of Computational Information Systems

收录刊物：EI、Scopus

卷号：8

期号：22

页面范围：9175-9182

ISSN号：15539105

摘要：Heterogeneous wireless mesh network (HWMN) emerges as a highly integrated, robust and high bandwidth wireless network. Routing metric for HWMN should guarantee the QoS and security of nodes. Routing metric requires two characteristics. First, it is the ability to reflect path quality including nodes and links along the path, which is named node quality and link quality in this paper. The security parameters and security levels can be reflected by node quality. Second, the metric should be able to depict the heterogeneity of nodes in different sub mesh networks. The sub networks are divided into two kinds of network, slotted network and no-slotted network. Based on the QoS and security requirements, a framework of metric for HWMN is first present in this paper. According to the framework, a novel metric, busyness and load adjusted ETX, named as BLETX is then proposed. BLETX utilizes degree of busyness and load of node to describe node quality and ETX to depict link quality. The security and the abnormal of a malicious node can be reflected by node quality. Simulation results show that BLETX is suitable for both kinds of sub networks, and capacity of sub networks can be improved comparing with that only considering path quality, such as ETX. Copyright ? 2012 Binary Information Press.