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IEEE 802.16j Multihop Relay (MR) is an optional deployment introduced to enhance the coverage and performance of WiMAX network without the need for deploying costly Base Stations (BSs). Multihop Relay network comprises of Multihop Relay BS (MRBS) and Relay Stations (RSs). This paper proposes mesh topology for IEEE 802.16j using adaptive RS group scheduling. The proposed scheduling algorithm introduces...
In the last few years, demand for high speed internet access service has increased greatly so the IEEE 802.16 working group on broadband wireless access (BWA) is developing the worldwide interoperability for microwave access (WiMAX) standard for wireless metropolitan area networks (MANs) which aims to provide broadband wireless last mile access, easy deployment, and high speed data rate for large...
The WiMAX mesh networks based on IEEE 802.16 standard was developed with the base station (BS) as a coordinator for centralized scheduling. However, interferences from transmission of the neighbouring nodes within the mesh networks are inevitable. This paper proposes a centralized scheduling algorithm that can reduce interferences by constructing routing tree with multi-channel single transceiver...
The WiMAX mesh networks based on IEEE 802.16 standard is a key topology for the next generation wireless networking. However, interferences from transmission of the neighboring nodes within the mesh networks are inevitable. Cross-layer design for tree-type routing and level-based centralized scheduling is proposed as the optimization strategy. The cross-layer design here is relying on the routing...
Survivability of wireless mesh networks (WMNs) is a crucial issue that has not received enough attention in the literature. In this paper, we present a network coding-based protection scheme that overcomes the deficiencies in traditional proactive and reactive protection mechanisms. Proactive schemes ((1+1) protection) provide instantaneous recovery, but are resource-hungry. While reactive schemes...
The all-photonic overlaid star network (APOSN) provides a simple architecture for high-speed backbone networks using available optical technologies. We consider in this paper a distributed signaling and scheduling protocol to enable prompt responding and flexible control of traffic demands. A contention-based approach is used for bandwidth allocation, and there is no coordination among the edge switches...
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