1. SG15 update – October 2018 Media architecture Stephen Shew
SG15 liaison rapporteur to ONF on SDN Architecture

2. SG15 Plenary#3 – October 2018
SG15 had its 3rd plenary meeting October 2018
Three liaisons were written to ONF
Update on media architecture and management
Updates to Element Management Modeling
Coordination of Ethernet information and data modelling work
This presentation focuses on the 1st liaison out of Q12/15 & Q14/15
G.807 (ex G.media) Architecture of optical media, progressed at this meeting
G.876 (ex G.media-mgmt.) Management Requirement and Information Model for Media also progressed

3. Architectural additions and conclusions
Liaison points 1 2 3 4
Nomenclature – Signals vs media
Generalization of optical parameter monitor symbol
Input to the Modulation function
Signal with multiple information streams

4. Nomenclature – Signals vs media
Existing SG15 architectural Recommendations have not specified the media.
G.872 (2017) started to illustrate the OTSi with a thick blue line, but also labelled them with media names in some figures (e.g., fibre, free space)
Illustrating a signal traversing multiple media has not been possible
New nomenclature adopted for G.807 is:
Signal
Guided media (e.g., fibre, copper wire)
Unguided media (e.g., free space)
Example of signal in guided media

5. Generalization of optical parameter monitor symbol
Have used the “home plate” symbol for optical power monitor, and optical parameter monitor functions.
The general characteristic of such functions is that they operate on a signal, but do not observe nor alter, any information that may be in the signal.
Could consider other functions such as high speed quantization (analogue to digital sampling) for this symbol.
signal (analogue)
Function label
digital information stream

6. Example of nomenclature and function on signal
A modulation operates on incoming data and outputs a wireless signal that propagates in free space.
A function that operates on this wave is high speed sampling (the “A/D”). It outputs a stream of digital information which are the samples in numerical representation.
The digital wireless information is shown crossing a metallic media such as a backplane, in an EM signal.
This is then carried in an optical client such as OTN, over an OTSi.
The digital wireless information is reconstituted as the radio wave in a D/A function before being demodulated to recover the original digital information.
ModulationX
Free space
ModulationNRZ
Fibre
“Wireless TSi”
OTSi
Media port
signal/wave
Digital data
Digital
wireless
OIF CEI-04.0 signal
metal
Demod NRZ
ModulationY
Demod Y
digital data
Digital-lane
Demod X
A/D on Wave
Digital-lane/digital-client
D/A on Wave

7. Input to the modulation function
ONF liaison “It would be useful to have a generic label/name for the electrical AI entering the optical modulator/demodulator”
Q12 & Q14 agree to use a shaded adaptation symbol
It was agreed that when exposed, the information stream input to a modulation should be identified
Single digital information stream
digital-lane/digital-client
Multiple digital information streams
Modulation
Modulation

8. Example of identified information stream to modulation
G “Flexible OTN long-reach interfaces” identifies the FOICx.k (FlexO Interface of order Cx with k lanes, see G.Sup58) lane as input to OTSi.
Note: SOTU and MOTU terminology will be retired.

9. Signal with multiple information streams
In G.698.4, a message channel is a 2nd information stream added to a common signal using another modulation.
It is not two signals.
Management implications have not been explored.
Fibre
OTSi
Modulation X&Y
Demod X&Y
Message channel information
Client information stream