wireless mesh network

(redirected from Wireless Mesh Networking)

wireless mesh network

(1) A network that relies on all nodes to propagate signals. Although the wireless signal may start at some base station (access point) attached to a wired network, a wireless mesh network extends the transmission distance by relaying the signal from one computer to another. Used on the battlefield to provide path diversity, it is also used for sensor networks and personal computers. See mobile ad hoc network, 802.11 and wireless LAN.


A Wireless Mesh for Users
When laptops are set up in a wireless mesh, they act as routers for each other.







(2) A network that provides Wi-Fi connectivity within an urban or suburban environment. It comprises "mesh routers," which are a combination base station (access point) and router in one device. Also called "mesh nodes," they are typically installed on street light poles, from which they obtain their power.

Access Point and Backhaul Router
Like any Wi-Fi access point, the access point in the mesh router communicates with the mobile users in the area. The backhaul side of the device relays the traffic from router to router wirelessly until it reaches a gateway that connects to the Internet or other private network mostly via a wired connection, but that could also be wireless.

Routing Algorithms
A major benefit of wireless mesh networks is path diversity, which provides many routes to the Internet in case one of the routers fails or its transmission path is temporarily blocked. The choice in routing algorithm is critical, and numerous mesh algorithms have been used over the years.

Number of Radios
Mesh routers can employ one, two or three radios. A single-radio router shares bandwidth between users and the backhaul. If two radios are used, one is dedicated to the frontside clients and the other to the backhaul. In three-radio routers, two radios are used for the backhaul and can transmit and receive simultaneously over different Wi-Fi channels. See 802.11.


A Wireless Mesh Network Topology
This simulated example from Tropos Networks is overlaid onto an aerial map to show how mesh routers are used in a metropolitan environment. (Image courtesy of Tropos Networks, Inc., www.tropos.com)







On the Pole
Depending on foliage and topography, up to 20 mesh routers are mounted on light poles per square mile. In this example, the man is making a Wi-Fi voice call between his VoWi-Fi phone and a Wireless Multi-Service Switch Router. (Image courtesy of Ericsson, www.ericsson.com)



On the Pole
Depending on foliage and topography, up to 20 mesh routers are mounted on light poles per square mile. In this example, the man is making a Wi-Fi voice call between his VoWi-Fi phone and a Wireless Multi-Service Switch Router. (Image courtesy of Ericsson, www.ericsson.com)



On the Pole
Depending on foliage and topography, up to 20 mesh routers are mounted on light poles per square mile. In this example, the man is making a Wi-Fi voice call between his VoWi-Fi phone and a Wireless Multi-Service Switch Router. (Image courtesy of Ericsson, www.ericsson.com)



On the Pole
Depending on foliage and topography, up to 20 mesh routers are mounted on light poles per square mile. In this example, the man is making a Wi-Fi voice call between his VoWi-Fi phone and a Wireless Multi-Service Switch Router. (Image courtesy of Ericsson, www.ericsson.com)
References in periodicals archive ?
12 /PRNewswire/ -- Strix Systems, the leader in high-performance wireless mesh networking, today announced that it has extended its carrier-grade professional services organization as well as its range of services in its North American base and, for the first time, to Europe and Asia.
The author also explores how networking protocols associated with wireless mesh networking would operate in home, office, government agency, and higher education environments, addressing potential and actual problems associated with the scale of the network, security, radio frequency interference, and other issues where they arise.
Sensicast Systems has introduced the H900 Wireless SensorNet System, the first commercially available end-to-end, low-power, bi-directional, wireless mesh networking system for commercial sensors and controls.
Written by authors with vast experience in academia and industry, Wireless Mesh Networks provides its readers with a thorough overview and in-depth understanding of the state-of-the-art in wireless mesh networking.
Strix Systems, the market and technology leader in high-performance wireless mesh networking, today announced that Hutton Communications, the North American leader in value added wireless equipment distribution, will sell Strix Systems full line of wireless mesh networking products and services nationwide.
22 /PRNewswire/ -- Firetide, a leader in wireless mesh networking announced a distribution agreement with ADI, a leading distributor of security and video surveillance products.
Tropos Uniquely Dominates in Intellectual Property for Outdoor Wireless Mesh Networking Solutions
20 /PRNewswire/ -- Dust Networks, a leading provider of enterprise-class, low-power wireless mesh networking systems, announced that they are currently a subcontractor to Science Applications International Corporation (SAIC), on a contract from The Defense Advanced Research Projects Agency (DARPA) for the development of technologies to address issues of urban area military operations.
Strix Systems is the worldwide Leader in Wireless Mesh Networking, in market share (according to Heavy Reading, Infonetics and In-Stat) and technology (Iometrix).
26 /PRNewswire/ -- Dust Networks today announced that it will be showcasing its latest wireless mesh networking technology at the Wireless Sensing Solutions Conference at the Holiday Inn Mart Plaza, September 27-28, 2005.
Strix Systems, the leader in high-performance wireless mesh networking, today introduced the industry's highest-powered mesh extension, the Access/One[R] Network Edge Wireless System 150 (EWS 150).

Full browser ?