The general network architecture of WMN can be regarded as consisting of two planes, in which the access plane provides network connection to Mesh clients, while the forwarding plane forwards relay traffic between Mesh routers. The gateway Mesh router forwards the traffic between WMN and the internet through a high-speed wired link. In the general network architecture of WMN, any Mesh router can be used as the data forwarding relay of other Mesh routers, and some Mesh routers also have the additional capability of Internet gateway. The Mesh client accesses the wireless Mesh router through wireless connection, and the wireless Mesh router forms a relatively stable forwarding network in the form of multi-word interconnection. The general architecture of WMN consists of three different types of wireless network elements: gateway router (router with gateway/bridge function), Mesh router (access point) and Mesh client (mobile or other), as shown in Figure 3. Wireless Mesh routers form self-organizing networks through Multi-Hop interconnection, which provides higher reliability, wider service coverage and lower upfront investment cost for WMN (Wireless Mesh Network) networking. With multi-word interconnection and Mesh topology, Wireless Mesh Network has evolved into an effective solution for broadband home networks, community networks, enterprise networks and other wireless access networks. If a node fails, it will not affect the operation of the whole network, and it can effectively avoid single point of failure. Mesh peer-to-peer network topology also has high reliability. Traditional wireless networks are mainly point-to-point or point-to-multipurpose star structures, and their topological structure is shown in Figure 1, while Wireless Mesh Networks use peer-to-peer network topology, in which each node communicates with its neighboring nodes and has the function of data forwarding, and its topological structure is shown in Figure 2. Wireless Mesh can cooperate with other networks and is dynamic and calculable network architecture. In the process of evolution to the next generation network, wireless is an indispensable technology. As a wireless access network that can be deployed quickly and does not need expensive network wiring infrastructure, its application value in the next generation Internet has been proved.
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