Abstract
Routing protocols are the key factors which determine the communication performance in the multi-interface wireless mesh networks. The existing routing protocols can not capture the channel interference accurately. In order to utilize the multi-interface technology to reduce the interference and improve the network throughput, this paper presented a novel routing metric for multi-interface wireless mesh networks. This metric integrated both the channel similarity and the link load to measure the route quality. Furthermore, this paper applied this routing metric to the AODV routing protocol which formed a new routing protocol. The simulation results show that the new protocol outperforms the original AODV protocol in terms of the average throughput, transmission rate and end-to-end delay.
Highlights
With the advantages of flexible structure, easy installment, low prepaid cost, robustness and so on, the wireless mesh network (WMN) becomes a key technology of new broadband wireless access, completely different from traditional wireless network
In order to study the capacity of routing protocols to utilize the multi-interface technology to reduce the interference, we study the behaviors of the AODV protocol and the CLSR protocol in the variation of the number of interfaces
As CLSR considers the channel interference caused by channel similarity and load, it can better use the multi-interface and multi-interface capacity of the wireless mesh network to balance the node flow load of the whole network, so that it avoids the re-transmission or packet loss caused by collisions of the data packets in highly-competitive area
Summary
With the advantages of flexible structure, easy installment, low prepaid cost, robustness and so on, the wireless mesh network (WMN) becomes a key technology of new broadband wireless access, completely different from traditional wireless network. The weighted cumulative expected transmission time (WCETT) comprehensively considers packet loss rate, bandwidth and other link performance parameters. As AODV protocol uses jumps as its routing metric, it chooses a routine to deliver data packets with the least jumps from the original node to the objective node, not considering any other link features.
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