基于多模电台的SDMANET网络组网方法

Networking Method for SDMANET Based on Multi-mode Radio

软件定义网络(SDN)在有线网络和数据中心网络等多种网络场景中正在快速发展,然而在移动自组织网络(MANET)中SDN的使用仍然处于起步阶段。因MANET网络拓扑变化频繁、资源受限以及采用分布式组网方式等特点使得在其中应用SDN变得具有挑战性。为此,本文提出一种基于多模电台的软件定义移动自组织网络(SDMANET)组网方法。该方法使用支配集算法计算骨干节点,仅由骨干节点使用带外信道和SDN控制器通信,并在MAC层基于骨干节点进行TDMA时隙动态分配。实验结果表明,与OLSR协议和直接带外控制的SDN方法相比,本方法具有更低的网络控制开销和信道访问时延,在大规模MANET网络中性能较好。

Software-defined networking(SDN)is developing rapidly in a variety of network scenarios,including wired networks and data center networks.However,the use of SDN in Mobile Ad Hoc Networks(MANET)is still in its infancy.Due to the frequent topology changes,limited resources,and the use of distributed networking in MANET networks,applying SDN in MANET becomes more challenging.To this end,this paper proposes a Software-defined Mobile Ad Hoc Networks(SDMANET)networking method based on multi-mode radios.This method uses the dominating set algorithm to calculate the backbone nodes.The backbone nodes use out-of-band channels to communicate with the SDN controller,and perform dynamical allocation of TDMA time slots based on the backbone nodes at the MAC layer.Experimental results show that compared with OLSR protocol and direct out-of-band control method,this method has lower network control overhead and channel access delay,and has better performance in large-scale MANET networks.