OTN aggregation as a bearer technology within xHaul (Fronthaul, Midhaul, Backhaul) segments in support of overlaying 5G network capabilities onto a brownfield transport network

1. Roles and Requirements for
xHaul Segments
in
5G Transport Networks
Presenter: Roderick Dottin / Orange
Date: May 23, 2019

2. interne Orange2
xHaul (Fronthaul, Midhaul, Backhaul) Segments
within 5G Transport
Roles and Requirements – OTN aggregation (not just hard optics) as a
flexible and scalable transport infrastructure in support of 5G NR
application scenarios
Enhanced Mobile Broadband, eMBB – Network capabilities include
peak data rate up to 20Gb/s; user experience data rate up to 100Mb/s;
mobility at 500km/h; area traffic density at 10Mb/s/m2
Ultra Reliable and Low Latency Communication, UrLLC – Network
capabilities include end-to-end latency less than 1ms; reliability better than
5 x 9’s
Massive Machine Type Communication, mMTC – Network capabilities
include connection density up to 106
devices/km2
; high-precision time
transfer < 100ns
Software-Controlled Optical Parameters within the Forwarding Plane, driven by
User-Centric Application Layer

3. interne Orange3
Network
Operator
A AMU
Node
SN9000
Node
STM-16/
OC-48c
ETHI/F
STM-16/
OC-48c
ETHI/F
STM-16/
OC-48c
CB
X
X
X
X
DA
ETHI/FETHI/F
Network
Operator
C
OTN Leased Backbone
n x OTUk
n x OTUk
US BB Node Int’l Remote
Network
Operator
B
n x OTUk
n x OTUk
OTUk
Xpndr
OTUk
Xpndr
TCM5 TCM5
TCM2 TCM3 TCM4
TCM1
PM
PM End-to-end Path Monitoring
TCM1 Client QoS Supervision
TCM2, 3, 4 Network Operator A, B, C Supervision
TCM5 Domain Interconnection
End-to-End OAM Capability across Multiple Network Operators

4. interne Orange4
Multi-Layered Transport Architecture
with 5G NR Overlay
OTUk
Xpndr
OTUk
Xpndr
5 x 100G
OXC
KAUB
OXC
KSTA
Multi-Service
Client
Signals
STM16 / STM64 /
10G WAN PHY /
STM256 / 40Gb/s
1 x GbE / 10GbE /
40GbE LAN PHY
:
5G FWA
Base Station
US Domain
EU Domain
5G AAU
**
CU+
DU
CU / MEC
EPC
EPC
CU / MEC
Midhaul
eCPRI / NGFI
Fronthaul
Backhaul
 eMBB Nwk Capabilities
 UrLLC Nwk Capabilities
 mMTC Nwk Capabilities
Key 5G NR Impacts
Edge/Core Router
OTN Switch
Integrated Packet Transport / ROADM

5. interne Orange5
λ1 ... λk1
λm-km+1 ... λm
Variable-Width
Optical
“Super-Channels”
OpticalModule(s)
Rate-Flexible OTN Line Interface “Midhaul” Aggregation
 Flexible OTN (FlexO) Multi-Frame Structure – organised as an OTSiG (Optical
Tributary Signal Group) per revised G.872; where each OTUC frame is mapped
across multiple OTSi blocks having an assigned central frequency and Application
Identifier (network slice)
Modified G.709.1 OTN Frame Extensions
::
OTUC,
ODUC,
OPUC OH
OTUC
OTUCn
OTUC #1
OTUC #n
FlexO
Frame #1
FlexO
Frame #j
:
:
1
k1
1
kj
FOIC x..k
80 row x 3810
column ts format
8 row x 38100
column ts format
or
OTSiA (Optical Tributary
Signal Assembly) flows as
OFDM / Nyquist-WDM
Outputs
n x100G
Distribute OTUC frames
across multiple OTSi
blocks each associated
with a particular 5G NR
Application Scenario
Application
Scenario 1
Application
Scenario m
5G NR OTUflex (TS:
25Gb/s)
“Layer1 Partitions”
eMBB OTSiG
mMTC OTSiG
FlexO
Frame #m :
1
km
UrLLC OTSiG
B100G
Client Signals

6. Thanks !

7. Thanks !