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Resource Management and QoS Provisioning for Duplex Services in IEEE 802.16

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Abstract

Duplex services are multimedia services that requires good connectivity in both uplink and downlink such as VoIP, video conferencing and interactive gaming. A weak connection in either direction may cause degradation of performances and dissatisfaction of user experience. Most researchers do not consider this issue and treat resource allocations in uplink and downlink independently. For this reason, the conventional resource management schemes do not guarantee a good duplex connectivity. Generally, duplex schemes require some relation or information to be exchanged between uplink and downlink resource allocation processes. The existing duplex resource allocation schemes, however, have high complexity and do not adhere to the IEEE 802.16 standard. In this paper, we propose a duplex resource management scheme for IEEE 802.16 network to enhance the user experience and to improve the network performances. The proposed resource management scheme is a MAC layer function that co-relates the uplink and downlink allocation processes using a newly proposed duplex variable. Simulation studies show that the proposed scheme brings significant benefit to duplex services in the IEEE 802.16 networks and outperforms the conventional and existing schemes in terms of uplink and downlink transmission gap, QoS performances and fairness.

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Acknowledgments

The authors would like to thank the editor and anonymous reviewers for their insightful comments on improving the presentation of this paper. This work was supported by Ministry of Science, Technology and Innovation (MOSTI) Malaysia under eScienceFund (01-01-03-SF-0782).

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Authors and Affiliations

  1. Department of Electrical Engineering, University of Malaya, Kuala Lumpur, Malaysia

    Wee-Kiat New & Chee-Onn Chow

  2. School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore

    Maode Ma

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  1. Wee-Kiat New
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  2. Chee-Onn Chow
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  3. Maode Ma
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Correspondence to Wee-Kiat New.

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New, WK., Chow, CO. & Ma, M. Resource Management and QoS Provisioning for Duplex Services in IEEE 802.16. Wireless Pers Commun 79, 2005–2024 (2014). https://doi.org/10.1007/s11277-014-1970-1

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  • DOI: https://doi.org/10.1007/s11277-014-1970-1

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