Unified Packet Scheduling Method Considering Delay Requirement in OFCDM Forward Link Broadband Wireless Access

Yoshiaki OFUJI; Sadayuki ABETA; Mamoru SAWAHASHI

doi:10.1093/ietcom/e88-b.1.170

Unified Packet Scheduling Method Considering Delay Requirement in OFCDM Forward Link Broadband Wireless Access

Yoshiaki OFUJI, Sadayuki ABETA, Mamoru SAWAHASHI

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This paper proposes a unified packet scheduling method that considers the delay requirement of each traffic data packet whether real time (RT) or non-real time (NRT), the channel conditions of each accessing user, and the packet type in hybrid automatic repeat request (ARQ), i.e., either initially transmitted packet or retransmitted packet, in the forward link for Orthogonal Frequency and Code Division Multiplexing (OFCDM) wireless access. In the proposed packet scheduling method, the overall priority function is decided based on P_Total = α_DelayP_Delay + α_TypeP_Type + α_SINRP_SINR (P_Delay, P_Type, and P_SINR are the priority functions derived from the delay requirement, type of packet, and the received signal-to-interference plus noise power ratio (SINR), respectively, and α_Delay, α_Type, and α_SINR are the corresponding weighting factors). The computer simulation results show that the weighting factor of each priority function as α_Type/α_Delay = 0.6, α_SINR/α_Delay = 0.4 assuming the linear-type function in P_Delay and a constant-type function in P_Type is optimized. Furthermore, we show that the outage probability for achieving the packet loss rate (PLR) of less than 10^-3 for non-real time (NRT) traffic users employing the proposed packet scheduling method is reduced by approximately two orders of magnitude compared to that using the Priority Queuing (PQ) method while maintaining the PLR of real-time (RT) traffic users at the same level as that using the PQ method.

Publication: IEICE TRANSACTIONS on Communications Vol.E88-B No.1 pp.170-182

Publication Date: 2005/01/01

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DOI: 10.1093/ietcom/e88-b.1.170

Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1)

Category: Scheduling

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Yoshiaki OFUJI, Sadayuki ABETA, Mamoru SAWAHASHI, "Unified Packet Scheduling Method Considering Delay Requirement in OFCDM Forward Link Broadband Wireless Access" in IEICE TRANSACTIONS on Communications, vol. E88-B, no. 1, pp. 170-182, January 2005, doi: 10.1093/ietcom/e88-b.1.170.
Abstract: This paper proposes a unified packet scheduling method that considers the delay requirement of each traffic data packet whether real time (RT) or non-real time (NRT), the channel conditions of each accessing user, and the packet type in hybrid automatic repeat request (ARQ), i.e., either initially transmitted packet or retransmitted packet, in the forward link for Orthogonal Frequency and Code Division Multiplexing (OFCDM) wireless access. In the proposed packet scheduling method, the overall priority function is decided based on P_Total = α_DelayP_Delay + α_TypeP_Type + α_SINRP_SINR (P_Delay, P_Type, and P_SINR are the priority functions derived from the delay requirement, type of packet, and the received signal-to-interference plus noise power ratio (SINR), respectively, and α_Delay, α_Type, and α_SINR are the corresponding weighting factors). The computer simulation results show that the weighting factor of each priority function as α_Type/α_Delay = 0.6, α_SINR/α_Delay = 0.4 assuming the linear-type function in P_Delay and a constant-type function in P_Type is optimized. Furthermore, we show that the outage probability for achieving the packet loss rate (PLR) of less than 10^-3 for non-real time (NRT) traffic users employing the proposed packet scheduling method is reduced by approximately two orders of magnitude compared to that using the Priority Queuing (PQ) method while maintaining the PLR of real-time (RT) traffic users at the same level as that using the PQ method.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e88-b.1.170/_p

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@ARTICLE{e88-b_1_170,
author={Yoshiaki OFUJI, Sadayuki ABETA, Mamoru SAWAHASHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Unified Packet Scheduling Method Considering Delay Requirement in OFCDM Forward Link Broadband Wireless Access},
year={2005},
volume={E88-B},
number={1},
pages={170-182},
abstract={This paper proposes a unified packet scheduling method that considers the delay requirement of each traffic data packet whether real time (RT) or non-real time (NRT), the channel conditions of each accessing user, and the packet type in hybrid automatic repeat request (ARQ), i.e., either initially transmitted packet or retransmitted packet, in the forward link for Orthogonal Frequency and Code Division Multiplexing (OFCDM) wireless access. In the proposed packet scheduling method, the overall priority function is decided based on P_Total = α_DelayP_Delay + α_TypeP_Type + α_SINRP_SINR (P_Delay, P_Type, and P_SINR are the priority functions derived from the delay requirement, type of packet, and the received signal-to-interference plus noise power ratio (SINR), respectively, and α_Delay, α_Type, and α_SINR are the corresponding weighting factors). The computer simulation results show that the weighting factor of each priority function as α_Type/α_Delay = 0.6, α_SINR/α_Delay = 0.4 assuming the linear-type function in P_Delay and a constant-type function in P_Type is optimized. Furthermore, we show that the outage probability for achieving the packet loss rate (PLR) of less than 10^-3 for non-real time (NRT) traffic users employing the proposed packet scheduling method is reduced by approximately two orders of magnitude compared to that using the Priority Queuing (PQ) method while maintaining the PLR of real-time (RT) traffic users at the same level as that using the PQ method.},
keywords={},
doi={10.1093/ietcom/e88-b.1.170},
ISSN={},
month={January},}

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TY - JOUR
TI - Unified Packet Scheduling Method Considering Delay Requirement in OFCDM Forward Link Broadband Wireless Access
T2 - IEICE TRANSACTIONS on Communications
SP - 170
EP - 182
AU - Yoshiaki OFUJI
AU - Sadayuki ABETA
AU - Mamoru SAWAHASHI
PY - 2005
DO - 10.1093/ietcom/e88-b.1.170
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E88-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2005
AB - This paper proposes a unified packet scheduling method that considers the delay requirement of each traffic data packet whether real time (RT) or non-real time (NRT), the channel conditions of each accessing user, and the packet type in hybrid automatic repeat request (ARQ), i.e., either initially transmitted packet or retransmitted packet, in the forward link for Orthogonal Frequency and Code Division Multiplexing (OFCDM) wireless access. In the proposed packet scheduling method, the overall priority function is decided based on P_Total = α_DelayP_Delay + α_TypeP_Type + α_SINRP_SINR (P_Delay, P_Type, and P_SINR are the priority functions derived from the delay requirement, type of packet, and the received signal-to-interference plus noise power ratio (SINR), respectively, and α_Delay, α_Type, and α_SINR are the corresponding weighting factors). The computer simulation results show that the weighting factor of each priority function as α_Type/α_Delay = 0.6, α_SINR/α_Delay = 0.4 assuming the linear-type function in P_Delay and a constant-type function in P_Type is optimized. Furthermore, we show that the outage probability for achieving the packet loss rate (PLR) of less than 10^-3 for non-real time (NRT) traffic users employing the proposed packet scheduling method is reduced by approximately two orders of magnitude compared to that using the Priority Queuing (PQ) method while maintaining the PLR of real-time (RT) traffic users at the same level as that using the PQ method.
ER -