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An N-Channel Stop and Wait ARQ based on Selective Packet Delay Strategy in HSDPA Systems  

Park Hyung-Ju (휴림 인터랙티브)
Lim Jae-sung (아주대학교 정보통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.10A, 2005 , pp. 896-905 More about this Journal
Abstract
In this paper, we propose a SPD(Selective Packet Delay) scheme to improve the performance of High-Speed Downlink Shared Channel(HS-DSCH) employing N-Channel Stop and Wait retransmission scheme in High Speed Downlink Packet Access(HSDPA) system. The proposed SPD coordinates packet transmissions according to the channel condition. When the channel condition is bad, packet transmission is forcedly delayed, and the designated time slot is set over to other users in good channel condition. Hence, the SPD is able to reduce the average transmission delay for packet transmission under the burst error environments. In addition, we propose two packet scheduling schemes called SPD-LDPF(Long Delayed Packet First) and SPD-DCRR(Deficit Compensated Round Robin) that are effectively combined with the SPD scheme. Simulation results show that the proposed scheme has better performance in terms of delay, throughput and fairness.
Keywords
HSDPA; N-Channel Stop and Wait; Selective Packet Delay;
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