A single-channel solution for transmission power control in wireless ad hoc networks

Alaa Muqattash, Marwan Krunz

Research output: Contribution to conferencePaper

97 Scopus citations

Abstract

Transmission power control (TPC) has a great potential to increase the throughput of a mobile ad hoc network (MANET). Existing TPC schemes achieve this goal by using additional hardware (e.g., multiple transceivers), by compromising the collision avoidance property of the channel access scheme, or by imposing impractical requirements on the operation of the MAC protocol. In this paper, we present a novel power control MAC protocol, known as POWMAC, for MANETs that enjoys the same simple single-channel, single-transceiver design of the IEEE 802.11 ad hoc MAC protocol, but that achieves a significant throughput improvement over the 802.11 scheme. Collision avoidance is integrated into the design of POWMAC. Instead of alternating between the transmission of control (RTS/CTS) and data packets, as done in the 802.11 scheme, POWMAC uses an access window (AW) to allow for a series of RTS/CTS exchanges to take place before multiple, concurrent data packet transmissions can commence. The length of the AW is dynamically adjusted (based on local traffic load information) to allow for concurrent interference-limited transmissions to take place in the same vicinity of a receiving node. Collision avoidance information is inserted into the CTS packet and is used to bound the transmission powers of potential interferers, rather than to silence such nodes. Simulation results for "random-grid" and "clustered" topologies are used to demonstrate the significant throughput and energy gains that can be obtained under the POWMAC protocol.

Original languageEnglish (US)
Pages210-221
Number of pages12
StatePublished - Sep 20 2004
EventProceedings of the Fifth ACM International Symposium on Mobile Ad Hoc Networking and Computing, MoBiHoc 2004 - Tokyo, Japan
Duration: May 24 2004May 26 2004

Other

OtherProceedings of the Fifth ACM International Symposium on Mobile Ad Hoc Networking and Computing, MoBiHoc 2004
CountryJapan
CityTokyo
Period5/24/045/26/04

Keywords

  • Ad hoc networks
  • IEEE 802.11
  • Interference margin
  • Load control
  • Multi-access interference
  • Power control
  • Throughput enhancement

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

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  • Cite this

    Muqattash, A., & Krunz, M. (2004). A single-channel solution for transmission power control in wireless ad hoc networks. 210-221. Paper presented at Proceedings of the Fifth ACM International Symposium on Mobile Ad Hoc Networking and Computing, MoBiHoc 2004, Tokyo, Japan.