Scheduled System Maintenance:
On Wednesday, July 29th, IEEE Xplore will undergo scheduled maintenance from 7:00-9:00 AM ET (11:00-13:00 UTC). During this time there may be intermittent impact on performance. We apologize for any inconvenience.
By Topic

Fragmentation based D-MAC protocol in wireless ad hoc networks

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Zhenmin Li ; Dept. of Comput. Sci., Illinois Univ., Urbana, IL, USA ; Pin Zhou ; Hou, J.C.

Directional antennas have been recently suggested to be used in wireless ad hoc networks to reduce interference outside the antenna direction and to increase spatial reuse of wireless channels. Several MAC schemes that exploit directional antennas have been proposed, among which the two D-MAC schemes proposed in [5] may have received the most attention. In this paper, we carefully analyze how the second D-MAC scheme proposed in [5] operates in the hidden/exposed terminal scenarios and show that it not only introduces new collisions, but also reduces spatial reuse to some extent. To remedy these problems, we propose an enhanced version of the second D-MAC scheme, called fragmentation based D-MAC (FD-MAC), to reduce collision, to achieve better spatial reuse (than the second D-MAC scheme), and to improve fairness. Through ns-2 simulation, we demonstrate the effectiveness of FD-MAC, and in particular, we show that in complex scenarios such as multihop forwarding and mesh topologies, FD-MAC significantly outperforms DCF with RTS/CTS and the two D-MAC schemes, both in terms of throughput and fairness.

Published in:

Distributed Computing Systems, 2003. Proceedings. 23rd International Conference on

Date of Conference:

19-22 May 2003