Scheduling in multi-radio multi-channel mesh networks: Brief review and novel approach

Nowadays, terminals with multiple interfaces are widely used to meet the demand of users in terms of ongoing connectivity. Nevertheless, many issues arise in the use of such devices on the choice of interfaces and channels used for each flow. In this context, several works have been done to study the MRMCN (Multi Radio and Multi Channel Networks). Some of them studied the scheduling process into queues but our work is focused on the scheduling of transmitter interfaces versus receivers interfaces. In this paper, we have focused on WLMN 802.11s (Wireless LAN Mesh Network). We have presented a brief review of scheduling algorithm and then proposed our approach, based on dWRR (Dynamic Weighted Round Robin) Algorithm, for sharing one reception interface by several transmission interfaces. Results show that our approach have not only added the services differentiation and avoided network starvation but also increased the QoS by reducing End to End Delay and Packet Loss Ratio.