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A Multi-Hop Resource Reservation Scheme for Seamless Real-Time QoS Guarantee in WiMedia Distributed MAC Protocol

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Abstract

In this paper, a multi-hop range conflict-free resource reservation scheme for UWB (Ultra Wide Band) WPAN (Wireless Personal Area Network) with D-MAC (Distributed Medium Access Control) is proposed. Unlike the centralized IEEE 802.15.3 MAC, the D-MAC UWB specified by WiMedia Alliance supports DRP (Distributed Reservation Protocol) mechanism which makes all devices be self-organized and removes the SOP (Simultaneous Operating Piconet) problem, i.e., packet collisions between overlapped piconets in the centralized IEEE 802.15.3 MAC. However, since each device’s mobility perspective in multi-hop environment has not been taken into account in the current WiMedia D-MAC, it may cause a “mobile” hidden node problem. In addition, once a DRP conflict occurs due to the mobile hidden node problem, only one of the DRP reservations involved in that DRP conflict maintains the reserved MASs, while the other DRP reservations must be terminated and DRP negotiations for them have to be re-started although only a few MASs are overlapped. Such DRP termination and renegotiation time delays due to the DRP conflicts can be a critical problem to the mobile devices transceiving real-time QoS traffic streams. Therefore, we propose a mechanism to prevent and resolve multi-hop range DRP conflicts due to each device’s mobility in D-MAC environment and demonstrate its guaranteed Seamless QoS and prioritized real-time QoS performances via numerical analyses.

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Abbreviations

D-MAC:

Distributed medium access control

DRP:

Distributed reservation protocol

UWB:

Ultra wide band

WPAN:

Wireless personal area network

References

  1. IEEE 802.15.3. (2003). Wireless medium access control and physical layer specification for high rate wireless personal area networks, http://standards.ieee.org/reading/ieee/std/lanman/restricted/802.15.3-2003.pdf.

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Authors and Affiliations

  1. Department of Electronics Engineering, Korea University, #1-5 ga, Anam-dong, Sungbuk-gu, Seoul, Korea

    Yang-Ick Joo

  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

Authors
  1. Yang-Ick Joo
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  2. Kyeong Hur
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Correspondence to Kyeong Hur.

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Joo, YI., Hur, K. A Multi-Hop Resource Reservation Scheme for Seamless Real-Time QoS Guarantee in WiMedia Distributed MAC Protocol. Wireless Pers Commun 60, 583–597 (2011). https://doi.org/10.1007/s11277-010-9961-3

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  • DOI: https://doi.org/10.1007/s11277-010-9961-3

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