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首页IEEE Std 802.3ca-2020
来自IEEE Xplore官网,IEEE Std 802.3ca-2020 (Amendment to IEEE Std 802.3-2018 as amended by IEEE 802.3cb-2018, IEEE 802.3bt-2018, IEEE 802.3cd-2018, IEEE 802.3cn-2019, IEEE 802.3cg-2019, IEEE 802.3cq-2020, IEEE 802.3cm-2020, and IEEE 802.3ch-2020)
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STANDARDS
IEEEStandardforEthernet
Amendment9:
PhysicalLayerSpecificationsand
ManagementParametersfor25Gb/sand
50Gb/sPassiveOpticalNetworks
IEEEComputerSociety
Developedbythe
LAN/MANStandardsCommittee
IEEEStd802.3ca™‐2020
(AmendmenttoIEEEStd802.3™‐2018
asamendedbyIEEEStd802.3cb™‐2018,
IEEEStd802.3bt™‐2018,
IEEEStd802.3cd™‐2018,
IEEEStd802.3cn™‐2019,
IEEEStd802.3cg™‐2019,
IEEEStd802.3cq™‐2020,
IEEEStd802cm™‐2020,
andIEEEStd802.3ch™‐2020
)
Authorized licensed use limited to: Shenzhen Technology University. Downloaded on November 28,2020 at 13:07:20 UTC from IEEE Xplore. Restrictions apply.

IEEE Std 802.3ca™-2020
(Amendment to IEEE Std 802.3™-2018
as amended by IEEE Std 802.3cb™-2018,
IEEE Std 802.3bt™-2018,
IEEE Std 802.3cd™-2018,
IEEE Std 802.3cn™-2019,
IEEE Std 802.3cg™-2019,
IEEE Std 802.3cq™-2020,
IEEE Std 802.3cm™-2020,
and IEEE Std 802.3ch™-2020)
IEEE Standard for Ethernet
Amendment 9:
Physical Layer Specifications and
Management Parameters for 25 Gb/s and
50 Gb/s Passive Optical Networks
Developed by the
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 4 June 2020
IEEE SA Standards Board
Authorized licensed use limited to: Shenzhen Technology University. Downloaded on November 28,2020 at 13:07:20 UTC from IEEE Xplore. Restrictions apply.

The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2020 by The Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 3 July 2020. Printed in the United States of America.
IEEE and 802 are registered trademarks in the U.S. Patent & Trademark Office, owned by The Institute of Electrical and
Electronics Engineers, Incorporated.
PDF: ISBN 978-1-5044-6768-1 STD24221
Print: ISBN 978-1-5044-6769-8 STDPD24221
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written permission of the publisher.
Abstract: This amendment to IEEE Std 802.3-2018 extends the operation of Ethernet passive
optical networks (EPONs) to multiple channels of 25 Gb/s providing both symmetric and
asymmetric operation for the following data rates (downstream/upstream): 25/10 Gb/s,
25/25 Gb/s, 50/10 Gb/s, 50/25 Gb/s, and 50/50 Gb/s. This standard specifies the 25 Gb/s EPON
Multi-Channel Reconciliation Sublayer (MCRS), Nx25G-EPON Physical Coding Sublayers
(PCSs), Physical Media Attachment (PMA) sublayers, and Physical Medium Dependent (PMD)
sublayers that support both symmetric and asymmetric data rates while maintaining backward
compatibility with already deployed 10 Gb/s EPON equipment. Backward compatibility with
deployed 1G-EPON and ITU-T G.984 GPON is maintained with 25GBASE-PQ for the specific
case of 1G-EPON and GPON ONUs using reduced-band (40 nm) lasers. The EPON operation is
defined for distances of at least 20 km, and for a split ratio of at least 1:32.
Keywords: 25 Gb/s Ethernet passive optical networks (25G-EPON), 50 Gb/s Ethernet passive
optical networks (50G-EPON), amendment, forward error correction (FEC), IEEE 802.3™,
IEEE 802.3ca™, Multi-Channel Reconciliation Sublayer (MCRS), Multipoint MAC Control
(MPMC), Physical Coding Sublayer (PCS), Physical Media Attachment (PMA), Physical Medium
Dependent (PMD), PON, Point-to-Multipoint (P2MP)
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3
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