Introduction to wireless mesh

Introduction to wireless mesh

Wireless Mesh Network (WirelessMeshNetwork) products, based on IEEE standards for the corresponding network design, while also avoiding the weakness of the traditional wireless local area network WLAN, which can achieve the coverage of wireless regional networks, wireless metropolitan area networks.

WirelessMeshNetwork (WMN), where M can have three meanings at the same time, namely M (mesh mesh network), M (metro metropolitan area network), M (mobility mobile network). Compared with traditional WLAN technology, it has the following advantages:

(1) The 5.8G IEEE802.11a channel can be used for signal return.

The wireless mesh network can use the 5.8G IEEE802.11a channel for signal return, while the traditional WLAN can only return signals through Ethernet. Thereby avoiding the difficulty of wiring, network services can be provided quickly and flexibly. The location of the equipment wiring is no longer limited by the distance limit of the traditional 100-meter Ethernet cable (such as the use of ordinary wireless LAN technology, which requires network wiring for each access node AP), which can be extended to a distance of several hundred meters Directional antennas can provide a longer transmission distance). In this way, the hot spot coverage that the traditional WLAN can achieve can be converted into hot area coverage.

(2) Adopt MobileIP design method, switching is more smooth.

Ordinary WLAN networks can only provide seamless hot-spot handovers for mobile nodes. The wireless mesh network uses MobileIP design. Mobile nodes within the coverage of the wireless mesh network, such as notebook computers, PDAs, WIFI terminals, etc., can obtain an IP address at a time after authentication and authentication, thereby achieving internal seamless within the coverage of the wireless mesh network Switching, to avoid repeated authentication and switching of users, and improve user experience.