Mesh networking: What it is


Mesh networking provides a self-forming, self-healing, self-routing network. Government applications, such as emergency response, are already in development because of the flexibility and capability of mesh networks. Transportation and other commercial applications will follow once standards are adopted. Mesh network solutions are being developed, but they will depend on integration of back-office capabilities before they can provide full value.


Interview:
Peter Andrews: Could you define mesh networking and put it into context with the other communications technologies that are out there?

Frank Trovato: Mesh networking is a self-forming, self-healing, self-routing network. The technology was developed by the U.S. military in the 1980s under a Defense Advanced Research Projects Agency (DARPA) project. Currently, the only limitation to mesh is the bandwidth, approximately 1.5Mb constant throughput. However, where it really shines is with its ability to hand off from node to node. It is documented to have hand off capabilities of 250 mph. This is not something that can be accomplished with other wireless solutions. This is a true mobility solution

Peter Andrews: Is mesh being used already?

Frank Trovato: Mesh is still being used by the military and is now just becoming available for commercial use. We are involved with several pilots -- simple solutions to start (for example, [traffic] signal light control capabilities). However, once the infrastructure is in place, then it could be used with a number of other applications, like first responders' support, position location, backup communications [or] telematic solutions for fleets, as well as, in the case of a local government, leasing bandwidth to commercial entities to generate a new revenue stream.

Peter Andrews: Could you walk me through a scenario of an important use of mesh?

Frank Trovato: Keep in mind, we are still in concept and pilot stage, so this vision is when the bugs are finally worked out and the stars are all aligned.

Imagine a firehouse alarm being sounded. The firefighter puts on his gear and heads to the fire. Upon arriving, [the team is] deployed into the building. The fire chief, in a truck below, opens up his laptop. Each firefighter is equipped with a mesh device. As they move around in the building, the chief downloads a floor plan of the building. He monitors the movement and positions of each of his firefighters. He monitors their vitals because each one is wearing a biometric
T-shirt.

There is a situation that needs a consult. The chief activates a small pin camera located in the firefighter's helmet and watches. A man is down. An indicator on the chief's laptop makes him aware. He then deploys another unit to the location and aids the downed firefighter. There are a number of [other] scenarios, but you get the picture.

Peter Andrews: You mentioned bugs. Are there key problems left to solve?

Frank Trovato: Most of the bugs are worked out. The major issue in my view is bandwidth. Other issues are basic business issues.

One of the key points keeping things from moving forward more quickly is that it is a proprietary system. It is not a standard yet. When 802.20 (a specification for improving data transmission speeds for mobile users in wireless metropolitan area networks, proposed by the Institute of Electrical and Electronics Engineers [IEEE]) is adopted, then there will be a greater level of acceptance.

Peter Andrews: Who are the leaders in mesh?

Frank Trovato: There are a couple of companies utilizing various forms of ad hoc mesh solutions. Our role is as a system integrator. The network is not where this ends. The back office capabilities have to be in place, tying into legacy systems, middleware, digital media solutions, and the list goes on.

Peter Andrews: Any guess on when rapid adoption will begin?

Frank Trovato: I believe it is near term… in 2004.

Peter Andrews: Is mesh a part of solving the "last mile" problem [the challenge of providing telecommunications infrastructure at the neighborhood level, capability that is needed for a relatively short distance]?

Frank Trovato: I would consider mesh more of a last mile mobility play. There are other solutions that address last mile stationary plays.