TY - GEN
T1 - Packet scheduling algorithm with modified time-utility function to improve NRT throughput in OFDMA system
AU - Shimizu, Yusuke
AU - Zhou, Rui
AU - Sasase, Iwao
PY - 2007/12/1
Y1 - 2007/12/1
N2 - We propose a packet scheduling algorithm to improve the throughput performance of Non-Real Time (NRT) traffic while satisfying Quality of Service (QoS) of Real-Time (RT) traffic in Orthogonal Frequency Division Multiple Access (OFDMA) system compared to the conventional algorithm. In order to support both RT and NRT packets adaptively in the varying traffic situation, the proposed algorithm adjusts the length of marginal scheduling time interval (MSTI) for the Time-Utility Function (TUF), which is related to the urgency of packets in time at a base station. In the proposed algorithm, if both the number of NRT traffic packets in buffers for each user become zero, the lengths of MSTI for voice traffic and video traffic are adjusted to the maximum available delays of voice and video traffic. Computer simulation results show that the proposed algorithm is able to provide less packet loss rate for RT traffic and better throughput performance for NRT traffic.
AB - We propose a packet scheduling algorithm to improve the throughput performance of Non-Real Time (NRT) traffic while satisfying Quality of Service (QoS) of Real-Time (RT) traffic in Orthogonal Frequency Division Multiple Access (OFDMA) system compared to the conventional algorithm. In order to support both RT and NRT packets adaptively in the varying traffic situation, the proposed algorithm adjusts the length of marginal scheduling time interval (MSTI) for the Time-Utility Function (TUF), which is related to the urgency of packets in time at a base station. In the proposed algorithm, if both the number of NRT traffic packets in buffers for each user become zero, the lengths of MSTI for voice traffic and video traffic are adjusted to the maximum available delays of voice and video traffic. Computer simulation results show that the proposed algorithm is able to provide less packet loss rate for RT traffic and better throughput performance for NRT traffic.
UR - http://www.scopus.com/inward/record.url?scp=47349083903&partnerID=8YFLogxK
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U2 - 10.1109/PACRIM.2007.4313294
DO - 10.1109/PACRIM.2007.4313294
M3 - Conference contribution
AN - SCOPUS:47349083903
SN - 1424411904
SN - 9781424411900
T3 - IEEE Pacific RIM Conference on Communications, Computers, and Signal Processing - Proceedings
SP - 545
EP - 548
BT - 2007 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, Conference Proceedings, PACRIM
T2 - 2007 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, PACRIM
Y2 - 22 August 2007 through 24 August 2007
ER -