软件定义无线Mesh网络路由的设计与实现

he distributed architecture of the traditional wireless Mesh network and the tightly coupled state of the software and hardware of the forwarding equipment have brought a series of challenges to the network resource management, operation and maintenance, and business innovation. In order to cope with the problems of traditional wireless Mesh networks, this paper introduces software-defined networks into wireless Mesh networks, and proposes the concept of software-defined wireless Mesh networks. The main idea is to separate the control plane and data plane to improve the flexibility of the network. In the wireless Mesh network, the establishment of a stable and effective control plane is the basis for the normal operation of the software-defined wireless Mesh network. This article is based on the AODV protocol and based on the neighbor filtering mechanism to enable the network equipment to establish a stable path to the controller and make the network The device actively sends neighbor information to the controller; compared with the traditional OFDP method, this method makes the network topology obtained by the controller more long-lasting and stable; after establishing a stable control plane, the controller obtains the entire network topology. Based on the network topology, the software-defined wireless Mesh network routing algorithm that combines the real-time packet loss rate, delay and link hop count of the link under the centralized control of the controller is studied. Compared with the AODV protocol, the algorithm is in the link bandwidth , Average round-trip delay, packet loss rate and delay jitter have all improved.