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MAC-layer channel utilisation enhancements for wireless mesh networks

MAC-layer channel utilisation enhancements for wireless mesh networks

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The authors focus on a wireless mesh network, that is, an ad hoc IEEE 802.11-based network whose nodes are either user devices or Access Points providing access to the mesh network or to the Internet. By relying on some work done within the IEEE 802.11s TG, the network nodes can use one control channel and one or more data channels, each on separate frequencies. Then, some problems related to channel access are identified and a MAC scheme is proposed that specifically addresses the problem of hidden terminals and the problem of coexisting control and data traffic on different frequency channels. An analytical model of the MAC scheme is presented and validated by using the Omnet++ simulator. Through the developed model, we show that our solution achieves very good performance both in regular and in very fragmented mesh topologies, and it significantly outperforms the standard 802.11 solution.

Inspec keywords: wireless LAN; telecommunication traffic; telecommunication network topology; Internet; wireless channels; access protocols; ad hoc networks

Other keywords: data traffic; Internet; wireless mesh network; MAC-layer channel utilisation enhancement; ad hoc IEEE 802.11-based network; frequency channel; multiple data channel; access point

Subjects: Local area networks; Communication network design, planning and routing; Radio links and equipment; Protocols; Protocols; Computer communications

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