Interference management using basestation coordination in broadband wireless access networks: Research Articles

  • Authors:

  • Mohamed H. Ahmed;Halim Yanikomeroglu;Samy Mahmoud

  • Affiliations:

  • Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's A1B 3X5, Canada;Department of Systems and Computer Engineering, Broadband Communication and Wireless Systems (BCWS) Centre, Carleton University, Ottawa, Canada;Department of Systems and Computer Engineering, Broadband Communication and Wireless Systems (BCWS) Centre, Carleton University, Ottawa, Canada

  • Venue:
  • Wireless Communications & Mobile Computing
  • Year:
  • 2006

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Abstract

This paper proposes a transmission-scheduling algorithm for interference management in broadband wireless access networks. The algorithm aims to minimize the cochannel interference using basestation coordination while still maintaining the other quality of service (QoS) requirements such as packet delay, throughput and packet loss. The interference reduction is achieved by avoiding (or minimizing) concurrent transmission of potential dominant interferers. Dynamic slot allocation based on traffic information in other cells/sectors is employed. In order to implement the algorithm in a distributed manner, basestations (BSs) have to exchange traffic information. Both real-time and non-real-time services are considered in this work. Results show that significant reduction in the packet error rate can be achieved without increasing the packet delay at low to medium loading values and with a higher but acceptable packet delay at high loading values. Since ARQ schemes can also be used for packet error rate reduction, we compare the performance of the proposed scheme with that of ARQ. Results indicate that although ARQ is more effective in reducing packet error rate, the proposed algorithm incurs much less packet delay particularly at medium to high loading. Copyright © 2006 John Wiley & Sons, Ltd.This paper was presented in part at the 5th International Symposium on Wireless Personal Multimedia Communications (WPMC'02), Hawaii, U.S.A., October 2002, and at the Newfoundland Electrical and Computer Engineering Conference (NECEC'03), St. John's, Canada, November 2003.