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

The delay threshold-based priority queueing (DTPQ) scheme has been shown useful for scheduling both real-time (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 sch...

Full description

Saved in:
Bibliographic Details
Main Authors: Ku, J.M., Kim, S.K., Kim, S.H., Simon Shin, Kim, J.H., Kang, C.G.
Format: Conference Proceeding
Language:English
Subjects:
Delay effects
Electronic mail
Frequency conversion
Intelligent networks
OFDM
Research and development
Scheduling algorithm
Telecommunication traffic
Throughput
Traffic control
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The delay threshold-based priority queueing (DTPQ) scheme has been shown useful for scheduling both real-time (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
ISSN:1525-3511
1558-2612
DOI:10.1109/WCNC.2006.1683631