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Mobility increases the capacity of ad hoc wireless networks

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2 Author(s)
Grossglauser, Matthias ; AT&T Labs-Res., Florham Park, NJ, USA ; Tse, D.N.C.

The capacity of ad hoc wireless networks is constrained by the mutual interference of concurrent transmissions between nodes. We study a model of an ad hoc network where n nodes communicate in random source-destination pairs. These nodes are assumed to be mobile. We examine the per-session throughput for applications with loose delay constraints, such that the topology changes over the time-scale of packet delivery. Under this assumption, the per-user throughput can increase dramatically when nodes are mobile rather than fixed. This improvement can be achieved by exploiting a form of multiuser diversity via packet relaying.

Published in:

Networking, IEEE/ACM Transactions on  (Volume:10 ,  Issue: 4 )