TY - GEN
T1 - Adaptive delay threshold-based priority queueing scheme for packet scheduling in mobile broadband wireless access system
AU - Ku, Jin M.
AU - Kim, Sung K.
AU - Kim, Sueng H.
AU - Shin, Simon
AU - Kim, Jay H.
AU - Kang, Chung G.
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=34250336142&partnerID=8YFLogxK
U2 - 10.1109/wcnc.2006.1683631
DO - 10.1109/wcnc.2006.1683631
M3 - Conference contribution
AN - SCOPUS:34250336142
SN - 1424402700
SN - 9781424402700
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 1142
EP - 1147
BT - 2006 IEEE Wireless Communications and Networking Conference, WCNC 2006
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 IEEE Wireless Communications and Networking Conference, WCNC 2006
Y2 - 3 April 2006 through 6 April 2006
ER -