Dual Busy Tone Multiple Access (DBTMA)— A Multiple Access Control Scheme for Ad Hoc Networks
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Jing Deng, Assistant Professor (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
Abstract: In ad hoc networks, the hidden- and the exposed-terminal
problems can severely reduce the network capacity on
the MAC layer. To address these problems, the ready-to-send
and clear-to-send (RTS/CTS) dialogue has been proposed in
the literature. However, MAC schemes using only the RTS/CTS
dialogue cannot completely solve the hidden and the exposed
terminal problems, as pure “packet sensing” MAC schemes are
not safe even in fully connected networks.We propose a new MAC
protocol, termed the dual busy tone multiple access (DBTMA)
scheme. The operation of the DBTMA protocol is based on
the RTS packet and two narrow-bandwidth, out-of-band busy
tones. With the use of the RTS packet and the receive busy tone,
which is set up by the receiver, our scheme completely solves
the hidden- and the exposed-terminal problems. The busy tone,
which is set up by the transmitter, provides protection for the RTS
packets, increasing the probability of successful RTS reception
and, consequently, increasing the throughput. This paper outlines
the operation rules of the DBTMA scheme and analyzes its
performance. Simulation results are also provided to support the
analytical results. It is concluded that the DBTMA protocol is
superior to other schemes that rely on the RTS/CTS dialogue on a
single channel or to those that rely on a single busy tone. As a point
of reference, the DBTMA scheme out-performs FAMA-NCS by
20–40% in our simulations using the network topologies borrowed
from the FAMA-NCS paper. In an ad hoc network with a large
coverage area, DBTMA achieves performance gain of 140% over
FAMA-NCS and performance gain of 20% over RI-BTMA.
Dual Busy Tone Multiple Access (DBTMA)— A Multiple Access Control Scheme for Ad Hoc Networks
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Additional Information
- Publication
- IEEE Transactions on Communications, vol. 50, no. 6, pp. 975-985, June 2002.
- Language: English
- Date: 2002
- Keywords
- Ad hoc networks, Busy tone, Exposed-terminal ,
FAMA, Hidden-terminal, MAC, MACA, MACAW, Medium access control, RTS/CTS