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

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

Content Provider	ACM Digital Library
Author	Krunz, Marwan Muqattash, Alaa
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 informat on is inserted into the CTS packet and is used to bound the transmission powers of potential nterferers, rather than to silence such nodes. Simulation results for "random-grid" and "clustered" topologies are used to demonstrate the signicant throughput and energy gains that can be obtained under the POWMAC protocol.
Starting Page	210
Ending Page	221
Page Count	12
File Format	PDF
ISBN	1581138490
DOI	10.1145/989459.989486
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2004-05-24
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Ieee 802.11 Load control Throughput enhancement Power control Interference margin Ad hoc networks Multi-access interference
Content Type	Text
Resource Type	Article

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