Tutorials

T12 - Ad Hoc Wireless Networks

Nick Maxemchuck, Columbia University, USA

Wireless ad hoc networks are significantly different than most of our other networks. In most networks, the load on the network changes, but the infrastructure is stable. In a wireless ad hoc network, the network is formed by forwarding the load through mobile modes. Therefore, the infrastructure is continuously changing.

The changing network infrastructure creates a class of network management and control problems including resource discovery, routing and congestion control. Many solutions have been proposed. In this tutorial we will survey the solutions. Ad hoc networks can be characterized by the rate at which the infrastructure changes relative to the frequency of communications. We will show how the different solutions apply to the different rates of infrastructure change.

Mobile networks are frequently used to share information that is collected by the mobile nodes or to distribute information to the mobile nodes. Reliable multicase on infrastructureless networks is a challenging new problem. We will describe the problem and some of the proposed solutions.

Mobile ad hoc networks have been applied to military networks. The objective is to create a communications infrastructure. We can expect this military technology to affect civilian applications. We will describe the application of this technology to existing cellular voice networks, and future automotive networks.



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