Adaptive delay threshold-based priority queueing scheme for packet scheduling in mobile broadband wireless access system

Jin M. Ku, Sung K. Kim, Sueng H. Kim, Simon Shin, Jay H. Kim, Chung Gu Kang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

The Delay Threshold-based Priority Queueing (DTPQ) scheme has been shown useful for scheduling both realtime (RT) and non-real-time (NRT) service traffic in mobile broadband wireless access (MBWA) systems. The overall system capacity can be maximized subject to their QoS requirement by the DTPQ scheme, which takes the urgency of the RT service into account only when their head-of-line (HOL) packet delays exceed a given delay threshold. In practice, the optimum delay threshold must be configured under the varying service scenarios, e.g., the number of RT and NRT users in the system. In this paper, we propose an adaptive version of DTPQ scheme, which updates the delay threshold by taking the urgency and channel conditions of RT service users into account. By evaluating the proposed approach in an orthogonal frequency division multiple access/time division duplex (OFDMA/TDD)-based mobile access system, it has been found that our adaptive scheme significantly improves the system capacity as compared to the existing DTPQ scheme with a fixed delay threshold.

Original languageEnglish
Title of host publicationIEEE Wireless Communications and Networking Conference, WCNC
Pages1142-1147
Number of pages6
Volume2
Publication statusPublished - 2006 Dec 1
Event2006 IEEE Wireless Communications and Networking Conference, WCNC 2006 - Las Vegas, NV, United States
Duration: 2006 Apr 32006 Apr 6

Other

Other2006 IEEE Wireless Communications and Networking Conference, WCNC 2006
CountryUnited States
CityLas Vegas, NV
Period06/4/306/4/6

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ku, J. M., Kim, S. K., Kim, S. H., Shin, S., Kim, J. H., & Kang, C. G. (2006). Adaptive delay threshold-based priority queueing scheme for packet scheduling in mobile broadband wireless access system. In IEEE Wireless Communications and Networking Conference, WCNC (Vol. 2, pp. 1142-1147). [1683631]