Page 127 - ITU-T Focus Group IMT-2020 Deliverables

ITU-T Focus Group IMT-2020 Deliverables 3

Service Orchestration, Control and Mgmt Framework
Service Orchestrator Network Controller Service Controller

Application
Slices
Conference Slice-1 Conference Slice-2

Mobility Service Slice
VSER-2
Service
Delivery Slices VSER-1 Security Service Slice Middle-box Service Slice
ICN Service Distribution Slice VSER-3
(Compute/Storage/Bandwidth)

Backbone Trail Access Trail
Connectivity Access Trail
Slices Substrate Connectivity Slice

Generic
VSER Service Access Point Network
(SAP)
Service Slices
Service Function SDR L2/L3/MPLS/Optical
Containers FH BH/Access/MEC BH/Access/MEC FH SDR
Programmable Substrate
Forwarder
Containers

Figure 6.3.4-5 – Layered slices for MS/MD video conferencing applications

In this example, Service orchestration and Mgmt framework provides all the control/mgmt functions for each
slice, via a distributed or a centralized manner (or hybrid). In 5G context, this framework can be implemented
over open source platforms with the standardized south/north bound interfaces and inter-domain/intra-
domain interfaces.

The connectivity slice in Fig 5 can be further decomposed as IP connectivity and channelized optical/packet
connectivity with respected to the front haul, back haul and the backbone domains (Figure 6.3.4-6).

IP
connectivity Access Trail Backbone Trail Access Trail
Substrate Connectivity Slice

channelized
optical/packet
connectivity
Optical Packetized MPLS/GMPLS/SDN
FH Channel BH Flow Path Switched Path

SDR L2/L3/MPLS/Optical
SDR
FH BH/Access/MEC BH/Access/MEC FH
Programmable Substrate

Figure 6.3.4-6 – An example of two-tier connectivity slices

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