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http://dx.doi.org/10.9717/kmms.2011.14.3.423

Relay Cooperative Transmission Scheme for Distributed MAC Protocol-Based Logistic Applications  

Joo, Yang-Ick (고려대학교 전자컴퓨터공학과 대학원)
Hur, Kyeong (경인교육대학교 컴퓨터교육과)
Publication Information
Journal of Korea Multimedia Society / v.14, no.3, 2011 , pp. 423-432 More about this Journal
Abstract
In a warehouse, because there exist frequent changes of stock status and the quality of some contents are influenced by the environment such as temperature, fast and accurate management of the warehouse's environment is very important for Warehouse Management Systems (WMS). However, due to the absence of a unified standard for the communication protocol between RFID nodes, the connection between RFID nodes can be broken in case of movement of a RFID reader to a region with a different protocol. Moreover, centralized MAC schemes for RFID communications in previous studies have severe problems. For an example, if a cluster header disappears from the cluster due to the cluster header's movement or bad channel conditions, the RFID member nodes of the cluster waste lots of time and energy to re-elect a new cluster header. Therefore, in this paper, we propose a WiMedia Distributed MAC (D-MAC) scheme for RFID communications and its cooperative relay transmission scheme for WMS applications Simulation results show performance improvement at the RFID node by using the proposed cooperative relay transmission scheme.
Keywords
Distributed MAC; Relay Cooperative Transmission; Warehouse Management System;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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