How to solve the "last mile" communication problem with wireless MESH network technology

Firstly, let's understand what wireless mesh networks are

Wireless Mesh Network, also known as "Wireless Grid Network", is a "multi hop" network developed from ad hoc networks and is one of the key technologies to solve the "last mile" problem. Wireless is an indispensable technology in the evolution of next-generation networks. Wireless mesh can collaborate with other networks and is a dynamic and continuously scalable network architecture, allowing any two devices to maintain wireless connectivity.

The Differences between Wireless Mesh Networks and Traditional Networks

Wireless Mesh network is a completely different network from traditional wireless networks. In traditional wireless access technology, the main approach is to use a point-to-point or point-to-multipoint topology. In this topology, there is usually a central node, such as a base station in a mobile communication system, an access point (AP) in an 802.11 wireless local area network (WLAN), and so on. The central node is connected to each wireless terminal through a single hop wireless link, controlling the access of each wireless terminal to the wireless network; At the same time, it is connected to the wired backbone network through wired links, providing a connection to the backbone network.

In wireless mesh networks, the use of mesh mesh topology is a multi-point to multi-point network topology. The nodes of the Mesh network are completely equivalent, without a backbone network, and are in a distributed state. In this Mesh network structure, each network node is connected through adjacent other network nodes in a wireless multi hop manner.

How Mesh Technology Solves "Last Kilometer" Communication

At present, the specialized network coverage of the urban emergency rescue communication network has been basically completed, but for places such as basements, buildings, tunnels, super complex buildings, petrochemical buildings, etc., the signal coverage of the "last mile" is still lacking. These places have complex terrain and significant attenuation of wireless signals. Ordinary base station cellular signal coverage cannot fully cover them, and therefore cannot provide effective communication support for rescue work.

In order to effectively solve the problem of emergency rescue personnel without public network coverage or weak public network signals, and achieve fast and smooth audio and video communication between emergency rescue team members, on-site commanders and emergency rescue team members, on-site commanders and emergency command centers, as well as between emergency command centers and emergency rescue team members, the use of Mesh ad hoc network combined with mobile 4G public network, TD-LTE private network, satellite communication network, digital trunking and other communication technologies is comprehensively utilized, Solve the "last mile" communication problem and provide visual command and scheduling for the rescue site.

In response to the communication challenge of the "last mile", a comprehensive utilization of mesh ad hoc network combined with mobile public network and other communication technologies is utilized to achieve smooth transmission of voice, image, data and other information between the on-site, front temporary command center, and rear command center, meeting the needs of visual command in emergency rescue sites.