Basic Technology for Wireless MESH Network Access (1)

The term "Mesh" originally meant that all nodes are connected to each other. A wireless Mesh network is a completely different network from a traditional wireless network. A traditional wireless network must first access a centralized access point (AP) for wireless connection. In this way, even if two 802.11b nodes are interconnected with each other, they must communicate through the access point. In a wireless Mesh network, each node can communicate directly with one or more peer nodes.

What is a wireless Mesh network?

A wireless Mesh network, also known as multi-hop, is a new wireless network technology that is completely different from a traditional wireless network.

In traditional wireless LAN (WLAN), each client accesses the network through a wireless link connected to the AP. If you want to communicate with each other, you must first access a fixed access point (AP). This network structure is called a single hop Network. In a wireless Mesh network, any wireless device node can act as both an AP and a router. each node in the network can send and receive signals, each node can communicate directly with one or more peer nodes.

The biggest benefit of this structure is that if the recent AP is congested due to heavy traffic, the data can be automatically routed to a nearby node with low communication traffic. Based on the network conditions, data packets can be routed to the nearest node for transmission until the final destination is reached. This method is multi-hop access.

Wireless Mesh Network is a new wireless network architecture. Its core guiding ideology is to enable each node in the network to send and receive signals, due to the low scalability and poor robustness of traditional WLAN, the emergence of Wireless Mesh Technology represents another great leap in wireless network technology and has a very broad application prospect.

Wireless Mesh is a wireless network solution suitable for covering large open area cities (including outdoor and indoor areas.

Features of Wireless Mesh Network

It is composed of a group of Network-distributed wireless APs, which are connected through wireless relay links in point-to-point mode, extend the wireless "Hotspot" in traditional WLAN to a "hot zone" that is truly covered by a large area ".

Self-configuration: APS in the wireless Mesh network can be automatically configured and centrally managed, simplifying network management and maintenance.

Self-healing: APS in the wireless Mesh network provide white motion discovery and dynamic routing connections to eliminate the impact of spof on services and provide redundant paths.

High bandwidth: the "Hotspot" coverage of traditional WLAN is extended to a larger range of "hot zone" coverage, eliminating the bandwidth decrease caused by the increase of distance of the original WLAN. In addition, in a Mesh system, signals can avoid interference from obstacles, so that signal transmission is unobstructed and blind spots are eliminated.

High utilization: high utilization is another technical advantage of Mesh networks. In a single hop Network, a fixed AP is shared by multiple devices. As network devices increase, the AP communication network availability will be greatly reduced. In a Mesh network, because each node is an AP, this type of problem does not occur at all. Once the availability of an AP decreases, the data is automatically transferred by selecting an AP.

Compatibility: The Mesh adopts the standard 802. The 11b/g standard is widely compatible with wireless client terminals.

In addition, wireless Mesh provides better mobile roaming capabilities and end-to-end secure connections.