On Capacity of the Many-to-One Multi-Channel Multi-Radio Wireless Mesh Networks

This paper focuses on the analysis of the per-node throughput capacity of a many-to-one ring-based Multi-Channel Multi-Radio interface (MCMR) Wireless Mesh Networks (WMN). We firstly introduce the ring-based network model and obtain the minimum number of mesh nodes which guarantees the network connectivity. Interference constraint and destination bottleneck constraint are shown as two key factors which affect the throughput capacity and we obtained the upper capacity bound of ringbased MCMR WMN by analyzing these two constraints. The result shows that the capacity not only relays on the ratio of channel number c and radio interfaces number m, but also closely relates with guard parameter δ and the number of rings k. In summary, in many-to-one ring-based MCMR WMN with n mesh routers and each node is equipped with c channels and m radio interfaces, the per-node throughput capacity is shown to be O(mino( W δk √ m cn , Wm cnδ2 )) bits/sec.