This paper addresses the problem of joint multicast routing, channel selection, scheduling, and call admission control in multi-cell multi-channel multi-radio cognitive radio wireless mesh networks. The applied model relies on the QoS sessions, where each one is expressed with a bandwidth requirement. We propose a cross-layer algorithm named “Multicast Routing, Channel selection, Scheduling, and Call admission control (MRCSC)”. The proposed scheme, considering wireless broadcast advantage, channel/radio diversity, and spatial reuse, uses both intra- and inter-cell relaying to create multicast trees with a specific bandwidth. MRCSC considers both inter-flow and intra-flow interferences. It adopts an efficient collision-free mechanism to greedily schedule different multicast transmission in the network. As an advantage, considering the multi-radio technology, MRCSC allows the nodes to simultaneously send/receive data on different available non-overlapping channels. Numerical results of our comprehensive simulations confirm the efficiency of the MRCSC algorithm in terms of the number of transmissions, stability, and multicast period.

本文解决了多小区多信道多无线电认知无线电无线网状网络中联合组播路由，信道选择，调度和呼叫接纳控制的问题。应用的模型依赖于QoS会话，其中每个会话均以带宽要求表示。我们提出了一种跨层算法，称为“组播路由，信道选择，调度和呼叫允许控制（MRCSC）”。考虑无线广播优势，信道/无线电分集和空间重用，所提出的方案同时使用小区间内和小区间中继来创建具有特定带宽的多播树。MRCSC同时考虑了流间干扰和流内干扰。它采用有效的无冲突机制来贪婪地调度网络中的不同组播传输。作为优势 考虑到多无线电技术，MRCSC允许节点在不同的可用非重叠信道上同时发送/接收数据。我们全面仿真的数值结果证实了MRCSC算法在传输数量，稳定性和多播周期方面的效率。