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A Contention Delay Minimization Scheme in WiMedia Networks

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Abstract

Ultra wideband (UWB) technology has emerged as a solution for the wireless interface between medical sensors and a personal server in future telemedicine systems. The WiMedia Alliance has specified a distributed medium access control protocol based on UWB for high-rate WPANs. Because WiMedia devices transmit data frames using CSMA/CA in PCA duration, waste of time slot interval occurs by collision, and data transmission and the overall throughput is decreased. Therefore, we propose medium access scheme to improve conflict and channel waste and to minimize contention by using own beacon slot number and neighbor’s beacon slot number. Simulation results have shown that the proposed scheme has excellent performance in terms of throughput, delay, jitter, and fairness.

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Abbreviations

AC:

Access category

AIFS:

Arbitration inter-frame space

CBR:

Constant bit rate

CW:

Contention window

D-MAC:

Distributed medium access control

DRP:

Distributed reservation protocol

EDCA:

Enhanced distribution channel access

IE:

Information element

MAS:

Medium access slot

MIFS:

Minimum inter-frame space

PCA:

Prioritized contention access

SIFS:

Short inter-frame space

TXOP:

Transmission opportunity

UWB:

Ultra wide-band

VBR:

Variable bit rate

WPAN:

Wireless personal area network

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Acknowledgments

This research was supported in part by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2009-0093828) and in part by the MSIP (Ministry of Science, ICT and Future Planning), Korea, under the C-ITRC (Convergence Information Technology Research Center) support program (NIPA-2014-H0401-14-1009) supervised by the NIPA (National IT Industry Promotion Agency).

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Authors and Affiliations

  1. Research Institute of Information Science and Engineering, Mokpo National University, Dorim-ri, Cheonggye-myeon, Muan-gun, Jeollanam-do, Mokpo, 534-729, Korea

    Jin-Woo Kim

  2. Department of Computer Education, Gyeongin National University of Education, Gyesan-Dong San 59-12, 45 Gyodae-Gil, Gyeyang-Gu, Incheon, 407-753, Korea

    Kyeong Hur

  3. Department of Electronics Engineering, Mokpo National University, Dorim-ri, Cheonggye-myeon, Muan-gun, Jeollanam-do, Mokpo, 534-729, Korea

    Seong-Ro Lee

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  1. Jin-Woo Kim
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  2. Kyeong Hur
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Correspondence to Kyeong Hur.

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Kim, JW., Hur, K. & Lee, SR. A Contention Delay Minimization Scheme in WiMedia Networks. Wireless Pers Commun 80, 1653–1670 (2015). https://doi.org/10.1007/s11277-014-2105-4

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  • DOI: https://doi.org/10.1007/s11277-014-2105-4

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