Higher Speed Passive Optical Networks for Low Latency Services

doi:10.12142/ZTECOM.202102008

ZTE Communications ›› 2021, Vol. 19 ›› Issue (2): 61-66.DOI: 10.12142/ZTECOM.202102008

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Higher Speed Passive Optical Networks for Low Latency Services

ZHANG Weiliang(), YUAN Liquan

Wireline Product Planning Department, ZTE Corporation, Shanghai 201203, China

Received:2021-03-16 Online:2021-06-25 Published:2021-07-27
About author:ZHANG Weiliang (zhang.weiliang@zte.com.cn) received his Ph.D. degree in communication and information system from Tsinghua University, China in 2001. He is currently a senior expert of fixed networks at ZTE Corporation and engaged in the research, standardization and product planning of fiber access and home networking. He has led or participated in a number of national “863” projects, as well as provincial and ministerial key projects. He has published more than ten papers and held more than 100 authorized patents.|YUAN Liquan received his master’s degree in information engineering from Harbin Institute of Technology, China in 1999. As a project leader at ZTE Corporation, he is responsible for pushing forward the research and standardization in fiber access and home networking of the company, cooperating with the standardization bodies including ITU-T SG15/IEE802.11/IEEE802.3/Broadband Forum/CCSA/ETSI. As an editor, he has participated in drafting more than 10 optical access standards and held more than 40 authorized patents.

Abstract

Abstract:

Latency sensitive services have attracted much attention lately and imposed stringent requirements on the access network design. Passive optical networks (PONs) provide a potential long-term solution for the underlying transport network supporting these services. This paper discusses latency limitations in PON and recent progress in PON standardization to improve latency. Experimental results of a low latency PON system are presented as a proof of concept.

Key words: passive optical networks, time-division multiple access, wavelength-division multiple access, low latency

ZHANG Weiliang, YUAN Liquan. Higher Speed Passive Optical Networks for Low Latency Services[J]. ZTE Communications, 2021, 19(2): 61-66.

Figures/Tables 6

Figure 1 Schematic of a typical time-division-multiplexed (TDM) passive optical network (PON)

Figure 2 Schematic of a typical wavelength-division multiplexing (WDM) passive optical network (PON)

Figure 3 Mapping of CU/DU/RU functions according to the split points: 5G(a) is high layer split (F1); 5G(b) is low layer split (Fx); 5G(c) is cascaded split (Reprint of Fig. 6-5 in G.Sup66[7])

Figure 4 Dedicated activation wavelength for 50G PON

Figure 5 Experimental set-up

Figure 6 Maximum latency under different numbers of burst allocations per 125 μs

References 14

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Higher Speed Passive Optical Networks for Low Latency Services

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