Application Guide: Wireless MESH Network Technology

Currently, the wireless MESH network technology is widely used. The characteristics and advantages of this technology are analyzed. I would like to share with you here and hope it will be useful to you. The term "Mesh" originally meant that all nodes are connected to each other. The wireless Mesh network technology is a completely different network from the 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 wireless Mesh network technology, each node can communicate directly with one or more peer nodes.

What is wireless Mesh network technology?

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 technology 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 network technology represents another great challenge of wireless network technology, it has broad application prospects. Wireless Mesh Network Technology is a wireless regional network solution suitable for covering large areas of open area cities (including outdoor and indoor.

Features of Wireless Mesh Network Technology

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

Self-healing: in wireless Mesh network technology, APS 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, the wireless Mesh network technology also provides better mobile roaming capabilities and end-to-end secure connections.

Wi-Mesh Alliance

The Wi-Mesh alliance is composed of companies with the same concept. It is expected that wireless users can enjoy the convenience of seamless communication regardless of the manufacturer's products through a set of wireless Mesh network standards. The Wi-Mesh alliance proposal is based on the IEEE Standard Association (IEEEStandards Association) Guiding Principles and expands the reuse and compatibility of technologies based on existing and future 802.11 communication protocols.

Members of the Wi-Mesh alliance are industry leaders from various fields, including zhibang technology, Nortel, ComNets, InterDigital, NextHop, And Thomson. They are actively working together to promote the standardization of global wireless Mesh areas (Mesh WLAN) to promote the interconnectivity between various wireless communication devices and services. Through extensive technical cooperation among partners, the Wi-Mesh Alliance met with the 802.11 Task Group (TGs) of the American Institute of Electrical and Electronics Engineers (IEEE, the latest network standard proposal for the world's wireless mesh areas was successfully submitted.

The Wi-Mesh alliance proposal is designed to expand 802.11n high-output specifications in the future. This policy will support existing Wi-Fi network bases around the world and expand the establishment of Wi-Fi networks in existing specified radio channels. Recently, Nortel also released the Mesh network architecture, announcing that it will work with traditional telecom networks in the future to form a complementary Seamless Roaming network.