This paper deals with the problem of joint multicast routing, scheduling, and call admission control in multiradio multi-channel wireless mesh networks. To heuristically solve this problem, we propose a cross-layer algorithm named “extended MIMCR with scheduling and call admission control phases (EMSC)”. Our model relies on the on-demand quality of service (QoS) multicast sessions, where each admitted session creates a unique tree with a required bandwidth. The proposed scheme extends the MIMCR algorithm to fairly schedule multiple non-interfering transmissions in the same time slot. It also exploits a call admission control mechanism to protect the QoS requirements of the multicast traffics. EMSC reduces the number of occupied time slots, with consideration of spatial reuse, both Intra-flow and Inter-flow interferences, and selecting the minimum-interference minimum-cost paths. This subsequently leads to better radio resource utilization and increases the network throughput. Simulation results show that the proposed algorithm outperforms the other algorithms and improves the network performance.

中文翻译：

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EMSC：多无线电多信道WMN中的联合多播路由，调度和呼叫允许控制

本文研究了多无线电多信道无线网状网络中联合组播路由，调度和呼叫接纳控制的问题。为了启发式地解决此问题，我们提出了一种跨层算法，称为“具有调度和呼叫允许控制阶段（EMSC）的扩展MIMCR”。我们的模型依赖于按需服务质量（QoS）多播会话，其中每个允许的会话都会创建具有所需带宽的唯一树。所提出的方案扩展了MIMCR算法，以公平地调度同一时隙中的多个无干扰传输。它还利用呼叫准入控制机制来保护多播流量的QoS要求。EMSC减少了占用时隙的数量，同时考虑了空间复用，流内干扰和流间干扰，并选择最小干扰最小成本路径。随后，这导致更好的无线电资源利用并增加了网络吞吐量。仿真结果表明，该算法优于其他算法，提高了网络性能。