Delay Aware Flow Scheduling for Time Sensitive Fronthaul Networks in Centralized Radio Access Network

doi:10.1109/TCOMM.2020.2976062

	Delay Aware Flow Scheduling for Time Sensitive Fronthaul Networks in Centralized Radio Access Network
	Liu, Yue 1,2; Zhou, Yiqing 1,2; Yuan, Jinhong 1,2,3; Liu, Ling 1,2
	2020-05-01
发表期刊	IEEE TRANSACTIONS ON COMMUNICATIONS
ISSN	0090-6778
卷号	68 期号:5 页码:2992-3009
摘要	Packet-based fronthaul (FH) transport networks are promising for future centralized radio access networks (C-RANs), which support statistical multiplexing via flow scheduling. With stringent requirements on FH delay, the FH network is time sensitive. Targeting to minimize the maximum FH delay of all packets, this paper investigates the optimized flow scheduling in the packet-based FH network. Due to the high complexity of optimal solutions, a heuristic higher rate flow scheduled later (HRSL) scheme is proposed to achieve good performance with a low complexity. The main idea is to schedule the higher-rated flow with a lower priority, because packets in the higher-rated flow have a larger solution space to be scheduled with a smaller delay. It is proved that using HRSL, each packet must have a transmission position and no packet will be discarded during scheduling. Moreover, the asymptotic delay of HRSL is derived when the number of flows is sufficiently large. We show that the delay performance of HRSL approaches to the optimal one and yields a reduction of up to 92.6% compared to existing schemes. The properties of HRSL are also verified via simulations. If the required delay is larger than the asymptotic delay performance, the FH network with HRSL can always deliver packets in time, no matter how many flows are scheduled and what the rates of flows are.
关键词	Delays Bandwidth Scheduling Logic gates Complexity theory Computer architecture Radio access networks Time sensitive fronthaul network C-RAN fronthaul delay optimal flow scheduling packet-based fronthaul network NGFI CU-DU functional split
DOI	10.1109/TCOMM.2020.2976062
收录类别	SCI
语种	英语
资助项目	Youth Program of National Natural Science Foundation of China[61901452]
WOS研究方向	Engineering ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000536770300025
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/15145
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Zhou, Yiqing
作者单位	1.Chinese Acad Sci, Beijing Key Lab Mobile Comp & Pervas Device, Inst Comp Technol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Comp Sci & Technol, Beijing 100049, Peoples R China 3.Univ New South Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia
推荐引用方式 GB/T 7714	Liu, Yue,Zhou, Yiqing,Yuan, Jinhong,et al. Delay Aware Flow Scheduling for Time Sensitive Fronthaul Networks in Centralized Radio Access Network[J]. IEEE TRANSACTIONS ON COMMUNICATIONS,2020,68(5):2992-3009.
APA	Liu, Yue,Zhou, Yiqing,Yuan, Jinhong,&Liu, Ling.(2020).Delay Aware Flow Scheduling for Time Sensitive Fronthaul Networks in Centralized Radio Access Network.IEEE TRANSACTIONS ON COMMUNICATIONS,68(5),2992-3009.
MLA	Liu, Yue,et al."Delay Aware Flow Scheduling for Time Sensitive Fronthaul Networks in Centralized Radio Access Network".IEEE TRANSACTIONS ON COMMUNICATIONS 68.5(2020):2992-3009.