NDLI: DGRAM: A Delay Guaranteed Routing and MAC protocol for wireless sensor networks

Content Provider	IEEE Xplore Digital Library
Author	Shanti, C. Sahoo, A.
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Indian Inst. of Technol., Mumbai (Shanti, C.; Sahoo, A.)
Abstract	This paper presents an integrated MAC and routing protocol called Delay Guaranteed Routing and MAC (DGRAM) for delay sensitive wireless sensor network (WSN) applications. DGRAM is a TDMA-based protocol designed to provide deterministic delay guarantee in an energy efficient manner. The design is based on slot reuse to reduce the latency of a node in accessing the medium, while ensuring contention free medium access. The transmission and reception cycles of nodes are carefully computed so that data is transported from the source towards the sink while the nodes could sleep at the other times to conserve energy. Thus, routes of data packets are integrated into DGRAM. We provide a detailed design of time slot assignment and delay analysis of the protocol. One major advantage of DGRAM over other TDMA protocols is that the slot assignment is done in a fully distributed manner making the DGRAM network self-configuring. We have simulated DGRAM using ns2 simulator and compared the results with those of SMAC for a similar network. Simulation results show that the delay experienced by data packets is always less than the analytical delay bound for which the protocol is designed. As per simulation results, the average energy consumption does not change as the event rate changes, and is less than that of SMAC. This characteristic of DGRAM provides flexibility in choosing various operating parameters without having to worry about energy efficiency.
Starting Page	1
Ending Page	9
File Size	327625
Page Count	9
File Format	PDF
ISBN	9781424420995
DOI	10.1109/WOWMOM.2008.4594855
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Time division multiple access Protocols Media Access Protocol Distance measurement Sensors Delay
Content Type	Text
Resource Type	Article

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