NDLI: An Approach for Modestly Directional Communications in Mobile Ad Hoc Networks

Content Provider	Springer Nature Link
Author	Grace, Kevin H. Stine, John A. Durst, Robert C.
Copyright Year	2005
Abstract	Directional antennas are a promising technology for use in mobile ad hoc environments. By consuming smaller volumes than omni directional antennas, directional antennas enable significant increases in network capacity by allowing more simultaneous transmissions to occur within a multihop wireless network. In this paper, we present some of the challenges that face asynchronous directional channel access schemes and describe how these problems can be avoided by taking a synchronous approach. We describe a communications system architecture that enables modestly directional sectored antennas to be effectively exploited in a mobile ad hoc environment. A key part of this architecture is the Directional Synchronous Unscheduled Multiple Access (DSUMA) protocol. By making intelligent decisions regarding the enabling/disabling of sector antennas, DSUMA provides an increased density of transmissions while insuring that collisions do not occur. Our results indicate how the number of sectors per node affects performance in terms of spatial reuse, the likelihood of collisions, and overall network capacity.
Starting Page	281
Ending Page	296
Page Count	16
File Format	PDF
ISSN	10184864
Journal	Telecommunication Systems
Volume Number	28
Issue Number	3-4
e-ISSN	15729451
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ad hoc networks directional antennas wireless communications Computer Communication Networks Artificial Intelligence (incl. Robotics) Probability Theory and Stochastic Processes Business Information Systems
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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