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Wireless Mess Network #1

Capacity of Wireless Mesh Networks
Understanding Single Radio, Dual Radio and Multi-Radio Wireless Mesh Networks

This post not a tutorial, just sharing knowledge about Wireless Mesh Network from many reference we have and from our experience on the field as a wireless internet sevice provider and computer network consultant.

We focuses on wireless mesh infrastructure systems used for creating large Wi-Fi access networks, and examines three different approaches currently available for implementing them. It examines the strengths and weaknesses of each approach with a particular focus on the capacity that is available to users. Can wireless mesh infrastructure systems deliver enough capacity to support broadband services for a large number of users?


Mesh is a type of network architecture. Originally, Ethernet was a shared bus topology in which every node tapped into a common cable that carried all transmissions from all nodes. In bus networks, any node on the network hears all transmissions from every other node in the network. Most local area networks (LANs) today use a star topology in which every network node is connected to a switch (switches can be interconnected to form larger networks).

Mesh networks are different – full physical layer connectivity is not required.As long as a node is connected to at least one other node in a mesh network, it will have full connectivity to the entire network because each mesh node forwards packets to other nodes in the network as required. Mesh protocols automatically determine the best route through the network and can dynamically reconfigure the network if a link becomes unusable. There are many different types of mesh networks. Mesh networks can be wired or wireless. For wireless networks there are ad-hoc mobile mesh networks and permanent infrastructure mesh networks.There are single radio mesh networks, dual-radio mesh networks and multi-radio mesh networks. All of these approaches have their strengths and weaknesses.They can be targeted at different applications and used to address different stages in the evolution and growth of the network.

The first wireless mesh networks were mobile ad hoc networks – with wireless stations moving around and participating in a peer to peer network. Mesh is an attractive approach for wireless networking since wireless nodes may be mobile and it is common for a wireless node to participate in a network without being able to hear all of the other nodes in the network. Mobile peer to peer networks benefit from the sparse connectivity requirements of the mesh architecture; and the combination of wireless and mesh can provide a reliable network with a great deal of flexibility.

to be continued...

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