Contrôle de puissance dans les réseaux ad-hoc

Abstract : In an ad-hoc network, mobile stations communicate with each other using multi-hop wireless links. There is no stationary infrastructure such as base stations. Each node in the network also acts as a router, forwarding data packets for other nodes. In this architecture, mobile stations have a multi-hop path, via other mobile stations acting as intermediaries or relays, to indirectly forward packets from source to destination. Adjusting the transmitted power is extremely important in ad-hoc networks due to at least the following reasons. The transmitted power of the radio terminals determines the network topology. The network topology in turn has considerable impact on the throughput (fraction of packets, sent by a source, and successfully received at the receiver) performance of the network. The need for power efficiency must be balanced against the lifetime of each individual node and the overall life of the network. Power control problem can be classified in one of three categories. The first class comprises of strategies to find an optimal transmitted power to control the connectivity properties of the network. The second class of approaches could be called power aware routing. Most schemes use some shortest path algorithm with a power based metric, rather than a hop count based metric. The third class of approaches aim at modifying the MAC layer. We use distributed power control algorithms initially proposed for cellular networks. We establish a classification of power control algorithms for wireless ad-hoc networks. We evaluate these algorithms in an IEEE 802.11b multi-hop wireless ad-hoc LAN environment. Results show the advantage of power control in maximizing signal-to-interference ratio and minimizing transmitted power
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https://hal.archives-ouvertes.fr/hal-01923461
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Submitted on : Thursday, November 15, 2018 - 11:50:46 AM
Last modification on : Thursday, October 17, 2019 - 12:34:53 PM

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  • HAL Id : hal-01923461, version 1

Citation

Alain Abinakhoul, Loutfi Nuaymi. Contrôle de puissance dans les réseaux ad-hoc. Annals of Telecommunications - annales des télécommunications, Springer, 2006, 61 (1-2), pp.141 - 181. ⟨hal-01923461⟩

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