Optimal Deployment Scheme for IEEE 802.16 Mesh Networks with Combined Single-Radio and Two-Radio Nodes

The IEEE 802.16 standard supports the multi-hop mesh mechanism, which focuses on high throughput, fast and cost-effective deployment. The standard defines the scheduling scheme in mesh mode, and many researchers have contributed greatly to this area. However, most of the existing research work is designed for single-radio single-channel environment and some heavy traffic nodes become the bottleneck of the network performance´s improving. In this paper, we propose a flexible two-radio and single-radio combined deployment (TSCD) scheme for multi-channel transmission using interference free scheduling algorithm in IEEE 802.16 mesh networks. The simulation results show that the proposed scheme increases the overall thoughput and reduces delay of the network compared to all single-radio network. What´s more, TSCD network gets almost the same performance compared to all two-radio network with less cost.