A medium access mechanism to reduce transmission delay in ubiquitous sensor network

Title
A medium access mechanism to reduce transmission delay in ubiquitous sensor network
Author(s)
박창현이명섭[이명섭]
Keywords
Contention window; CSMA/CA; DCF; IEEE 802.11 MAC protocols; MAC; MAC protocol; Medium access; Network simulation; Transmission delays; Ubiquitous sensor networks; Carrier sense multiple access; Computer simulation; Medium access control; Probability distributions; Sensor networks; Sensor nodes; Mobile telecommunication systems
Issue Date
201204
Citation
International Journal of Multimedia and Ubiquitous Engineering, v.7, no.2, pp.491 - 496
Abstract
This paper presents a more efficient method for medium access in a real-time ubiquitous sensor network. To reduce the latency for the delivery of event data from sensor nodes, a fixed-size contention window with a non-uniform probability distribution of transmitting in each slot is selected. Through a simulation using ns-2, a widely used network simulation package, it is shown that the proposed method can reduce the latency considerably as compared to conventional IEEE 802.11 MAC protocols for a sensor network with up to 256 nodes. It is also shown that the proposed MAC scheme realizes a latency similar to that realized by a decentralized CSMA-based MAC protocol for real-time ubiquitous sensor networks that are sensitive to latency.
URI
http://hdl.handle.net/YU.REPOSITORY/28564
ISSN
1975-0080
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공과대학 > 컴퓨터공학과 > Articles
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