Recommendation ITU-T G.9802.2 (07/2023) Wavelength division multiplexed passive optical networks (WDM PON): physical media dependent (PMD) layer and transmission convergence (TC) layer specifications
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Definitions
     3.1 Terms defined elsewhere
     3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 Overview of the WDM PON PMD and TC Recommendation
Annex A  Physical media dependent layer specification
     A.1 Physical media dependent layer overview
          A.1.1 Physical media and transmission method
               A.1.1.1 Transmission medium
               A.1.1.2 Transmission direction
               A.1.1.3 Transmission method
     A.2 Reference configuration
          A.2.1 Physical grouping of logical functions
          A.2.2 Optical path loss classes
          A.2.3 Categories for fibre differential distance
     A.3 PMD layer requirements
          A.3.1 Wavelength allocation
          For the downstream direction, the WRP wavelength band is 1529.553-1544.526 nm; for upstream direction, the WDM PON wavelength band is 1550.116-1565.496 nm. These wavelength bands align with those defined in [b-ITU-T G.698.4] to maximize the potential ...
          A.3.2 Nominal line rate and clock accuracy
          A.3.3 Line code
          A.3.4 Operating wavelength channels
          A.3.5 FEC code selection
          A.3.6 Electronic dispersion compensation
          A.3.7 PMD parameters
               A.3.7.1 Compatible ODN
               A.3.7.2 Optical interface parameters
                    A.3.7.2.1 Optical interface parameters of downstream direction
                    A.3.7.2.2 Optical interface parameters of upstream direction
          A.3.8 Transmitter at reference point S
               A.3.8.1 Source type
               A.3.8.2 Spectral characteristics
               A.3.8.3 Operating wavelength band
               A.3.8.4 Nominal central frequency
               A.3.8.5 Mean launch optical power
               A.3.8.6 Mask of transmitter eye diagram
                    A.3.8.6.1 OLT transmitter
                    A.3.8.6.2 ONU transmitter
                         A.3.8.6.2.1 ONU transmitter eye diagram
                    A.3.8.6.3 Jitter performance
                         A.3.8.6.3.1 Jitter transfer
                         A.3.8.6.3.2 Jitter tolerance
                         A.3.8.6.3.3 Jitter generation
Annex B  Transmission convergence layer specification
     B.1 WDM PON management TC layer overview
          B.1.1 WDM PON management channel modes
          B.1.2 Supported nominal line rates
          B.1.3 WDM architecture
               B.1.3.1 Overview
               B.1.3.2 Identifiers common for WRP
                    B.1.3.2.1 WRP system identifier
                    B.1.3.2.2 WRP CT identifier
                    B.1.3.2.3 Downstream wavelength channel identifier
                    B.1.3.2.4 Upstream wavelength channel identifier
                    B.1.3.2.5 ONU identifier
                    B.1.3.2.6 Channel partition index
     B.2 TC layer structure and sublayer functions
          B.2.1 WDM PON management TC layer structure
          B.2.2 Management TC sublayer functions
               B.2.2.1 Management TC service adaptation sublayer
               B.2.2.2 Management TC framing sublayer
               B.2.2.3 Management TC PHY adaptation sublayer
          B.2.3 WDM PON management TC management functions
     B.3 WDM PON management framing sublayer
          B.3.1 PLOAM count
          B.3.2 Payload length
          B.3.3 SFC offset
          B.3.4 Ind field
          B.3.5 HEC field
          B.3.6 PLOAM partition
          B.3.7 WDM PON management frame trailer
          B.3.8 XGEM port identifier
     B.4 Management TC PHY adaptation sublayer
          B.4.1 Management TC PHY frame
               B.4.1.1 Physical synchronization block (PSB)
               B.4.1.2 Superframe counter structure
               B.4.1.3 Operation control structure
          B.4.2 WDM PON Management frame synchronization
          B.4.3 Forward error correction
          B.4.4 Transcoding
     B.5 Management channel and interface
     B.6 Channel management (per channel, per channel group, and inter-channel management)
          B.6.1 Overview
               B.6.1.1 WDM PON system and channel descriptors
               B.6.1.2 Profile parameter learning by ONU
     B.7 WDM PON PLOAM messaging channel
          B.7.1 Overview
               B.7.1.1 PLOAM channel functionality
               B.7.1.2 PLOAM channel rate limitations
               B.7.1.3 PLOAM channel robustness
               B.7.1.4 Extensibility
          B.7.2 PLOAM message format
               B.7.2.1 ONU-ID
               B.7.2.2 Message type ID
               B.7.2.3 SeqNo
               B.7.2.4 Message content
               B.7.2.5 Message integrity check
               B.7.2.6 Common elements of PLOAM message format
                    B.7.2.6.1 Vendor_ID
                    B.7.2.6.2 VSSN
                    B.7.2.6.3 Correlation tag
          B.7.3 PLOAM message definitions
               B.7.3.1 Downstream PLOAM message summary
               B.7.3.2 Upstream PLOAM message summary
               B.7.3.3 Downstream PLOAM message formats
                    B.7.3.3.1 Assign_ONU-ID message
                    B.7.3.3.2 Deactivate_ONU-ID message
                    B.7.3.3.3 Disable_Serial_Number message
                    B.7.3.3.4 Request_Registration message
                    B.7.3.3.5 Channel_Profile message
                    B.7.3.3.6 Reboot_ONU message
                    B.7.3.3.7 System_Profile message
                    B.7.3.3.8 Rate_Control message
               B.7.3.4 Upstream PLOAM message formats
                    B.7.3.4.1 Serial_Number_ONU message
                    B.7.3.4.2 Registration message
                    B.7.3.4.3 Acknowledgement message
                    B.7.3.4.4 Rate_Response message
     B.8 WDM PON ONU activation cycle
          B.8.1 Causal sequence of activation events
          B.8.2 WDM PON ONU activation cycle state machine
               B.8.2.1 WDM PON ONU activation states, timers and inputs
               B.8.2.2 ONU state diagram
               B.8.2.3 ONU state transition table
     B.9 OLT and ONU timing relationships
     B.10 Performance monitoring, supervision and defects
          B.10.1 Performance monitoring
          B.10.2 Defects
               B.10.2.1 Items detected at OLT channel termination
               B.10.2.2 Items detected at ONU
               B.10.2.3 Urgent ONU status snapshot record
     B.11 WRP Security
          B.11.1 Threat model for WRP
          B.11.2 Authentication
               B.11.2.1 Registration-based authentication
                    B.11.2.1.1 The OLT CT perspective
                    B.11.2.1.2The ONU perspective
               B.11.2.2 Secure mutual authentication options
          B.11.3 Key derivation
               B.11.3.1 Cryptographic method
               B.11.3.2 Master session key
               B.11.3.3 Derived shared keys
          B.11.4 Integrity protection and data origin verification for PLOAM
               B.11.4.1 Cryptographic method
               B.11.4.2 MIC calculation
          B.11.5 Integrity and data origin verification key switching
               B.11.5.1 Use of the default key
               B.11.5.2 Key switching for OMCI-based secure mutual authentication
               B.11.5.3 Key switching for IEEE 802.1x-based authentication
               B.11.5.4 MIC failure considerations
     B.12 Power management
          B.12.1 Sleep mode
          B.12.2 Line rate switching
     B.13 System protection
Annex C  Secure mutual authentication via OMCI
Annex D  Secure mutual authentication using IEEE 802.1X
Annex E  Transcoded mode management channel implementation
Annex F  Services with 25G eCPRI over Ethernet
Annex G  Hybrid error control (HEC) decoding and scrambler sequence codes
Bibliography