ETSI GS F5G 024 V1.1.1 (2024-10)

Fifth Generation Fixed Network (F5G); F5G Advanced Network Architecture Release 3

DGS/F5G-0024

General Information

• Status: Not Published
• Technical Committee: F5G - Fifth Generation Fixed Network
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Due Date: 29-Oct-2024
• Completion Date: 07-Oct-2024

Standards Content (Sample)

GROUP SPECIFICATION
Fifth Generation Fixed Network (F5G);
F5G Advanced Network Architecture
Release 3
Disclaimer
The present document has been produced and approved by the Fifth Generation Fixed Network (F5G) ETSI Industry
Specification Group (ISG) and represents the views of those members who participated in this ISG.
It does not necessarily represent the views of the entire ETSI membership.

2 ETSI GS F5G 024 V1.1.1 (2024-10)

Reference
DGS/F5G-0024
Keywords
access, architecture, F5G, home gateway,
intelligent homes & buildings, requirements,
transmission
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ETSI
3 ETSI GS F5G 024 V1.1.1 (2024-10)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 5
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Business requirements for the F5G Advanced Network Architecture . 11
4.1 Context . 11
4.2 Flexible on-demand new residential user service packages . 12
4.3 Flexible on-demand new business service packages . 12
4.4 Evolution to application-oriented 10 Gigabit guaranteed residential services. 12 ®
4.5 Optimization of large Wi-Fi networks for residential and enterprises . 12
4.6 Automation of application scenario detection and network adaptation networking to provide the best
services . 12
4.7 Advanced services through networking in conjunction with computing capabilities. 13
4.8 Improved energy usage through all optical networking to the edge . 13
4.9 Flexibly sharing optical resources . 13
4.10 Service-oriented Optical Networks . 13
4.11 Use optical communication for special dedicated networks . 13
4.12 Deterministic Optical Networks . 14
4.13 Operation as a Service . 14
4.14 Use of Optical Infrastructure for Sensing . 14
5 F5G Advanced Network Architecture . 14
5.1 Architecture design principles . 14
5.1.1 Quality on Demand (QoD) . 14
5.1.2 Autonomous End-to-End Slice Creation and Adaptation . 14 ®
5.1.3 Large Wi-Fi Networks and Policy Control . 14
5.1.4 Introduction of additional Residential and Business Service Packages . 15
5.1.5 Addition of Computing and its interaction with the network . 15
5.1.6 Optical Layer extension for wavelength sharing . 15
5.1.7 Fine-Granular Services over Optical Networks . 16
5.2 Architecture overview . 16
5.2.1 Evolution to the F5G Advanced Architecture . 16
5.2.2 Architectural Overview . 17
5.2.3 The F5G-A Underlay Plane . 18
5.2.4 The F5G-A Service Plane . 19
5.2.5 The F5G-A Management, Control & Analytics (F5G-A MCA) Plane . 20
5.2.6 Cross-Plane Computing . 21
5.3 F5G-A topology and interfaces . 22
5.3.1 Network Overview . 22
5.3.1.1 General Topology Overview . 22
5.3.1.2 Enterprise CPN: Fibre To The Office (FTTO) Scenario . 25
5.3.1.3 Industrial CPN: Fibre To The Machine (FTTM) Scenario. 26
5.3.2 Definition of Interfaces . 27
5.3.2.1 T interface . 27
5.3.2.3 T' interface . 27
5.3.2.4 U interface . 27
5.3.2.5 U' interface . 28
5.3.2.6 F Interface . 28
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4 ETSI GS F5G 024 V1.1.1 (2024-10)
5.3.2.7 G Interface. 28
5.3.2.8 H Interface. 28
5.3.2.9 B interface . 28
5.3.2.10 C interface . 29
5.3.2.11 D interface . 29
5.3.2.12 V interface . 29
5.3.2.13 V interface . 29
o
5.3.2.14 V interface . 30
λ
5.3.2.15 A10 interface . 30
5.3.2.16 K interface . 30
5.3.2.17 L interface . 30
5.3.2.18 J interface . 31
5.3.2.19 DCI interface . 31
5.3.3 Near real-time Control Topology . 31
5.3.4 Near real-time Control Interfaces . 32
5.3.4.1 The F1 FTTR control interfaces . 32
5.3.4.2 G Control Interface . 32
c
5.3.4.3 T Control Interface . 32
c
5.3.4.4 C Control Interface . 33
c
5.3.4.5 V Control Interface . 33
c
5.3.4.6 K Control Interface . 33
c
5.3.4.7 C1 and C2/C2' (fg)OTN Control Interfaces . 33
5.3.4.8 Compute Coordination Interfaces . 34
5.4 Key enabling features . 35
5.4.1 Fibre Access Node (FAN) Intelligent Engine (FIE) Architecture . 35
5.4.1.1 Background . 35
5.4.1.2 Quality on Demand (QoD) Application Programming Interface (API) . 35
5.4.1.3 The App-Flow application: A step beyond Slicing . 36
5.4.1.4 The F5G-A Access Node Architecture for FIE . 36
5.4.2 The Aggregation Network Fabrics . 37
5.4.2.1 The use of different fabrics . 37
5.4.2.2 IP/Ethernet Fabric . 38
5.4.2.3 OTN Fabric . 39
5.4.2.4 Wavelength-shared WDM Fabric . 40
5.4.2.4.1 Overview . 40
5.4.2.4.2 Colourless ROADM technique in access nodes . 41
5.4.2.4.3 Automated OAM enabled by optical-layer digital label . 42
5.4.3 Optical Cloud Network (OCN) Architecture . 42
5.4.4 Fibre Sensing Architecture . 43
Annex A (informative): SDH migration to (fg)OTN . 45
Annex B (informative): How the F5G-A Architecture addresses the Gaps . 48
History . 50

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5 ETSI GS F5G 024 V1.1.1 (2024-10)
Intellectual Property Rights
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Foreword
This Group Specification (GS) has been produced by ETSI Industry Specification Group (ISG) Fifth Generation Fixed
Network (F5G).
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
1 Scope
The present document specifies the end to end F5G Advanced network architecture, features and related network
elements' requirements including On-premise, Access, Aggregation, and Core Networks. The present document defines
new features and enhances features from previous releases.
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6 ETSI GS F5G 024 V1.1.1 (2024-10)
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI GS F5G 014 (V1.1.1): "Fifth Generation Fixed Network (F5G); F5G Network Architecture
Release 2".
[2] IETF RFC 4760: "Multiprotocol Extensions for BGP-4".
[3] ETSI GS F5G 023 (V1.1.1): "Fifth Generation Fixed Network (F5G); F5G Advanced Technology
Requirements and Gap Analyses; Release 3".
[4] Recommendation ITU-T G.9940 (2023): "High speed fibre-based in-premises transceivers -
system architecture".
[5] Recommendation ITU-T G.9941 (2024): "High speed fibre-based in-premises transceivers -
physical layer specification".
[6] Recommendation ITU-T G.9942 (2024): "High speed fibre-based in-premises transceivers - data
link layer".
[7] Recommendation ITU-T G.988 (2022): "ONU management and control interface (OMCI)
specification".
[8] Recommendation ITU-T G.709: "Interfaces for the optical transport network".
[9] Recommendation ITU-T G.709.20: "Overview of fine grain OTN".
[10] Recommendation ITU-T G.9804.2:"'Higher speed passive optical networks - Common
transmission convergence layer specification".
[11] Recommendation ITU-T G.9804.3: "50-Gigabit-capable passive optical networks (50G-PON):
Physical media dependent (PMD) layer specification".
[12] IETF RFC 8402: "Segment Routing Architecture".
[13] IETF RFC 8986: "Segment Routing over IPv6 (SRv6) Network Programming".
[14] IETF RFC 7209: "Requirements for Ethernet VPN (EVPN)".
[15] ETSI GS F5G 018 (V1.1.1): "Fifth Generation Fixed Network (F5G); Architecture of Optical
Cloud Networks".
[16] Recommendation ITU-T G.959.1 (01/2024): "Optical transport network physical layer interfaces".
TM
[17] IEEE 802.3:2022 : "IEEE standards for Ethernet".
TM
[18] IEEE 802.11-2020 : "IEEE Standard for Information Technology -- Telecommunications and
Information Exchange between Systems -- Local and Metropolitan Area Networks -- Specific
Requirements -- Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer
(PHY) Specifications".
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7 ETSI GS F5G 024 V1.1.1 (2024-10)
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI GR F5G 021 (V1.1.1): "Fifth Generation Fixed Network (F5G); F5G Advanced Generation
Definition".
[i.2] ETSI GR F5G 020 (V1.1.1): "Fifth Generation Fixed Network (F5G); F5G Advanced Use Cases;
Release 3".
[i.3] ITU-T SG15/Q3 Work Item G.wmci: 'WLAN management control interface (WMCI) for in-
premises network'.
[i.4] Recommendation ITU-T Y.110 (1998): "Global Information Infrastructure principles and
framework architecture".
[i.5] Recommendation ITU-T G.9943: "High speed fibre-based in-premises transceivers -
management".
[i.6] Recommendation ITU-T G.709.1: "Flexible OTN common elements".
[i.7] Recommendation ITU-T G.709.3: "Flexible OTN B100G long-reach interfaces".
[i.8] Recommendation ITU-T G.709.5: "Flexible OTN short-reach interfaces".
[i.9] Recommendation ITU-T G.709.6: "Flexible OTN B400G long-reach interfaces".
[i.10] Recommendation ITU-T G.872: "Fine grain flexible ODU (fgODUflex) path layer network".
[i.11] Recommendation ITU-T G.672: "Characteristics of multi-degree reconfigurable optical add/drop
multiplexers".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
compute functionality: generic term for the basic computing functions, which include input, processing, storage, and
output. Usually, processing is flexibly programmable
NOTE: The compute functionality needs compute resources for the computational success of a program.
compute resource: compute resources are measurable quantities of compute power that might be requested, allocated,
and consumed for computing activities
EXAMPLE: Possible compute resources include Central Processing Units (CPU) and Memory among others.
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8 ETSI GS F5G 024 V1.1.1 (2024-10)
control process: control process is a sub-class of a compute process, which is a generic compute functionality (see
above)
NOTE: The control process is the way compute might be used for controlling components, devices, systems, or
equipment. The compute function is scoped to the input from, and output to the controlled components,
devices, systems, or equipment. A control process might control other control processes building overall
hierarchy of control processes.
customer: depending on the market segment, the customer is either a subscriber, a user, or both
equipment: implementation of one or more functions in a single physical container
NOTE: The term is derived and adapted from Recommendation ITU-T Y.110 [i.4]. The equipment will have at
least one function implemented in hardware and will have interfaces through which it might be connected
to other equipment. It may be designed in a modular way in that the equipment might be made up from a
number of smaller pieces of equipment. In addition, some functions may be implemented in software,
which might be changed during the lifetime of the equipment.
fgOTN: stands for fine grain Optical Transport Network (OTN) that supports from 10 Mbit/s up to 1 Gbit/s
NOTE: See [8] for the specification of OTN including fgOTN in Annexes M and N of Recommendation
ITU-T G.709 [8] and see Recommendation ITU-T G.709.20 [9] for an overview of fgOTN.
(fg)OTN: is defined as an OTN network supporting both standards OTN and fgOTN with service rates from 10 Mbit/s
up to 800 Gbit/s and beyond
NOTE 1: See the following for more detailed information and the specification of (fg)OTN for a variety of
deployment options and situations [8], [i.6], [i.7], [i.8], [i.9], [9] and [i.10]
NOTE 2: (fg)OTN network elements supports OTN with or without support for fgOTN.
(fg)O-CPE: Customer Premises Equipment (CPE) supporting OTN with or without support for fgOTN
fibre sensing network element: network element that has fibre sensing capabilities
interface: point where independent and distinct systems or equipment interact and communicate with each other
NOTE 1: In the industry there are various definitions and more specialized terms for the term interface, such as a
Reference Point, logical or physical interface. Depending on the interface described in the present
document, any of those terms apply.
NOTE 2: ITU (see Recommendation ITU-T Y.110 [i.4]) has defined the terms "implementational interface" and
"physical interface", which has a similar meaning to interfaces used in the present document.
Lambda (λ) fabric: network consisting of optical connections only with different wavelength being switched
NOTE: In the context of the present document, the λ fabric is used for the Aggregation Network, other
applications for the λ fabric are for further study.
non-real-time control: non-real-time control process, is a compute process, where the time from receiving the input
data to the output action is non-urgent and might take some time for the process to finish
NOTE 1: Due to that characteristic the control process might be located remote from the component being
controlled and the component and the control process need to be connected with a communication
channel with more relaxed requirements than in the real-time control case. The bandwidth and latency of
the communication channel depends on the control process and the amount of data being transmitted
between the component and the control process.
NOTE 2: The present document describes concepts that are predominantly classed as real-time control of the
F5G-A network. Non-real-time control features are for further study and are usually part of a network
management related work items.
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9 ETSI GS F5G 024 V1.1.1 (2024-10)
real-time control: real-time control process, is a compute process, where the time from receiving the input data to the
output action is very short
NOTE: Due to that characteristic the control process needs to be located close to the component being controlled
and the component and the control process need to be connected with a high-speed, low latency
communication channel.
subscriber: legal entity who pays regularly to receive or access a service
user: somebody using a service
3.2 Symbols
Void.
3.3 Abbreviations
For the present document, the following abbreviations apply:
(fg)O-CPE (fg)OTN Customer Premises Equipment
AEL Aggregation Edge Leaf
AgF Aggregation Fabric
AggN Aggregation Network
AI Artificial Intelligence
AL Access Leaf
AN Access Network
AP Access Point
API Application Programming Interface
BGP Border Gateway Protocol
BNG Broadband Network Gateway
BSS Business Support System
CDC Central Data Centre
CE Customer Equipment
CO Central Office
CPE Customer Premises Equipment
CPN Customer Premises Network
DC Data Centre
DC-GW Data Center Gateway
DCI Data Centre Interconnect
DDS Data Distribution Service
DECT™ Digital Enhanced Cordless Telecommunications
E2E End-to-End
EC Edge Compute
E-LAN Ethernet virtual private LAN
E-Line Ethernet virtual private Line
E-ONU Edge Optical Network Unit
EoS Ethernet over Synchronous
E-Tree Ethernet virtual private Tree
EVPN Ethernet VPN
th
F4G 4 Generation Fixed Network
NOTE: See the F5G Advanced generation definition in ETSI GR F5G 021 [i.1].
F5G-A F5G Advanced
FAN Fibre Access Node
FDM Frequency Division Multiplexing
fgOTN fine-grain Optical Transport Network
FIE FAN Intelligent Engine
FlexO Flexible Optical transport network
FMCI Fibre Management and Control Interface
FTTM Fibre to the Machine
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10 ETSI GS F5G 024 V1.1.1 (2024-10)
FTTO Fibre to the Office
FTTR Fibre-To-The-Room
GMPLS Generalized Multi-Protocol Label Switching
GUI Graphical User Interface
GW Gateway
HGW Home Gateway
HS-PON High-Speed PON
ICT Information and Communication Technology
IE Industrial Equipment
IoT Internet of Things
IP Internet Protocol
IPTV Internet Protocol Television
KPI Key Performance Indicators
KQI Key Quality Indicator
L2VPN Layer 2 VPN
L3VPN Layer 3 VPN
LAN Local Area Network
LCAS Link Capacity Adjustment Scheme
LDC Local Data Centre
MAC Media Access Control
MCA Management, Control and Analytics
MD-ROADM Multi-Dimensional ROADM
MP-BGP Multiprotocol extensions for BGP
MPLS Multiprotocol Label Switching
NaaS Network as a Service
NAS Network Attached Storage
NE Network Element
O&M Operation and Maintenance
OAM Operation, Administration and Maintenance
OCh Optical Channel
OCN Optical Cloud Network
ODN Optical Distribution Network
ODU Optical Data Unit
ODU0 Optical Data Unit 0
ODUk Optical Data Unit k
OE OTN Edge
OLT Optical Line Terminal
OMCI ONU Management and Control Interface
OMS Optical Multiplex Section
ONU Optical Network Unit
OPEX Operational Expenditure
OSP Optical Service Protocols
OSS Operations Support System
OTN Optical Transport Network
OTS Optical Transmission Section
OTSiA Optical Tributary Signal Assembly
OTUCn Optical Transport Unit-Cn
OTUk Optical Transport Unit (k = 0 to 4)
P2MP Point to Multi-Point
P2P Point to Point
PBX Private Branch Exchange
PC Personal Computer
PDH Plesiochronous Digital Hierarchy
PE Provider Edge
PHY Physical layer
POL Passive Optical LAN
PON Passive Optical Network
P-ONU Primary Optical Network Unit
PPPoE Point-to-Point Protocol over Ethernet
QoD Quality on Demand
QoE Quality of Experience
QoS Quality of Service
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11 ETSI GS F5G 024 V1.1.1 (2024-10)
RaaS Robotics as a Service
RG Residential Gateway
ROADM Reconfigurable Optical Add/Drop Multiplexer
SAP Service Access Point
SC Sub-Carrier
SCM Sub-Carrier Multiplexing
SDH Synchronous Digital Hierarchy
SDN Software Defined Networking
SDO Standards Development Organization
SLA Service Level Agreement
SME Small and Medium Enterprises
SMP Service Mapping Point
SPP Service Processing Point
SR Segment Routing
SRv6 Segment Routing over IPv6
STM Synchronous Transport Module
STM-N Synchronous Transport Module N (N = 1, 4, 16, 64, 256)
TDM Time Division Multiplexing
VC Virtual Container
VCAT Virtual Concatenation
VC-n Virtual Container n (n = 1, 2, 3, 4, …)
vCPE Virtual CPE
VLAN Virtual LAN
VNF Virtual Network Function
VoIP Voice over IP
VPN Virtual Private Network
VR Virtual Reality
VxLAN Virtual extensible Local Area Network
WDM Wavelength-Division Multiplexing
WG Wireless Gateway
WMCI Wireless Management and Control Interface
WSS Wavelength Selected Switch
XC Cross-Connect
xDSL x(Version) Digital Subscriber Line
XGS-PON 10-Gigabit-capable Symmetric PON
NOTE: Also known as symmetric 10G-PON.
XR eXtended Reality
4 Business requirements for the F5G Advanced
Network Architecture
4.1 Context
The F5G-A Use Cases [i.2] show the various services and application that the F5G-Advanced architecture needs to
support. The F5G-Advanced Generation Definition [i.1] has defined a set of network characteristics that the F5G-A
network architecture shall support.
The present clause lists the various requirements from a business perspective. Note that they are not technically exact
but show the direction and business benefits of the F5G-Advanced network architecture.
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12 ETSI GS F5G 024 V1.1.1 (2024-10)
4.2 Flexible on-demand new residential user service packages
The transition from a relatively limited residential service portfolio, such as triple play service (High-speed Internet,
Voice, IPTV) to a much wider service portfolio including but not limited to IoT, new entertainment (4K and 8K video,
VR gaming), metaverse applications, digital twin, e-medicine, etc., implies that application specific network
requirements are needed. Due to on-demand service deployment, more flexibility allocation and adaptation of the
network is needed. The on-demand aspect means full configuration automation of specific service packages with the
necessary networking capabilities and automated delivery of high-quality services.
4.3 Flexible on-demand new business service packages
The transformation of enterprise networking to an "as a Service" model, requires additional functionality in the network
to access multiple clouds from different cloud providers. Having Software "as a Service" requires network adaptation to
service specific needs. Enterprise services might be bundled into packages such that these packages are ordered
on-demand and based on the actual business needs.
4.4 Evolution to application-oriented 10 Gigabit guaranteed
residential services
The introduction of many service packages, means that a network subscription requires network quality differentiation
within the residential premises as well as in the access and core networks. For some of the services, guaranteed QoS
also needs to be supported. A subscription needs differentiated network performance for the network operator to
rd
provide its own applications and as well as for 3 party applications.
Due to the higher number of end-systems and higher bandwidth services more network capacity per customer is needed.
The network speed will increase from 1 G to 5 G today to 5 Gbit to 25 Gbit in the future [i.1]. ®
4.5 Optimization of large Wi-Fi networks for residential and
enterprises
For both residential and business scenarios, the customer premises network needs extensive coverage providing
connectivity to every corner of the customer premises without interruptions. In addition, it is not just about providing
connectivity, but having high quality and high capacity capability in all areas of the customer premises. This means the
® ®
on-premises Wi-Fi network is expanding to include a Wi-Fi Access Point in every room or office (FTTR2H or
FTTR2B). ®
In many cases it is about a Wi-Fi network providing high quality of experience to the residential or enterprise users
including easy installation or self-install and low network wide energy usage. From a service provider perspective self-
install might help lower operational cost and significantly reduce the number of residential or business call-outs.
4.6 Automation of application scenario detection and network
adaptation networking to provide the best services
Since various applications are running in various network scenarios, the network should be capable of automatically
detecting and reacting to them providing the best possible service. This also means that network adaptation to changes
in the environment, application usage profile, or any other changes affecting the service quality shall be performed
automatically.
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13 ETSI GS F5G 024 V1.1.1 (2024-10)
4.7 Advanced services through networking in conjunction with
computing capabilities
More advanced services are not restricted to communication and networking anymore. Combinations of networking and
computing/storage resources in a single platform enables combined service creation and deployment. The network
providing compute and storage capabilities benefits the overall service twofold. Firstly, compute and storage are used to
improve the quality of the service and experience through AI. Secondly the service itself is deployed as a combination
of networking and compute/storage. Examples include cloud storage easily accessible from residential or business,
application as a service installed in the cloud and the GUI provided to the customers.
4.8 Improved energy usage through all optical networking to the
edge
The need to lower energy usage is addressed by reducing the number optical to electrical to optical conversions in the
E2E network. Transitioning the longest portion of an end-to-end network path to all optical is beneficial in lowering the
energy usage as well as OPEX. The service providers improve market positioning thought providing climate neutral and
sustainable network services.
4.9 Flexibly sharing optical resources
Transforming to all-optical networks, requires additional steps as optical communication gets closer to the network
edge. Since wavelengths are a precious resource and underutilising them is wasteful, therefore the sharing of
wavelengths lowers the cost of deployment of optical communication in the all-optical space. To realize the automatic
allocation and management of wavelength resources, the F5G-A network should be capable of fast tracing and
monitoring of optical channels, and evaluating optical parameters. This effectively avoids the manual process during
network maintenance and shortens the network adjustment time. Moreover, for wavelength-level one-hop direct
services, this automatic wavelength allocation and management need to be performed across different network layers.
Still electrical aspects need to be envisioned, when all-optical solution is either cost prohibitive. Either there are
insufficient users to justify the wavelength approach or the services are too fine granular that a wavelength-based
communication is an excessive concept.
4.10 Service-oriented Optical Networks
The business requirement for optical communication is to enable the full the spectrum of networking capabilities, such
that small to large capacity connections are possible. The various levels of infrastructure sharing provide isolation of
different service from each other. Since typically services are provided using cloud computing, which is a dynamic
approach to deliver compute functionality in the "as a Service" model, the optical network needs to support the "as a
Service" model as well. So dynamic provisioning and adaptation of the optical network to cloud services requires the
Network as a Service (NaaS) model.
4.11 Use optical communication for special dedicated networks
There are several special dedicated networks (non-typical telecommunication networks) being deployed today including
networks in power distribution, utilities, railways, and subways (see the F5G-A Use Case Document Release 3 [i.2]). In
the context of special dedicated networks, which are typically purpose built and isolated for a particular application.
This is not a cost effective and efficient use of resources. The reuse and sharing of a common telecommunication
network infrastructure is cost effective and efficient, while still maintaining the requirements of the special dedicated
networks.
ETSI
14 ETSI GS F5G 024 V1.1.1 (2024-10)
4.12 Deterministic Optical Networks
Due to the move to the cloud and growing trend towards digitalization in the various industries, enterprises and
residential. Many of the applications require deterministic network performance to operate securely and reliably. The
requirements may change over time due to the evolution of the applications and the business criticality of the
application. Therefore, the required determinism needs to be supported in all segments of the F5G-A optical network.
Since the optical networks many times include on-premises network segments, a more service-oriented operation and
flexible adaptation is needed.
4.13 Operation as a Service
One aspect of the "as a service" model is outsourcing the operation of ICT tasks and network infrastructure. That is
relatively straightforward for virtual components in the compute and storage space. However, it is more difficult for
physical equipment on-premise. Therefore, there is a business interest of outsourcing the operation to knowledgably
business partners, being more efficient due to the consolidated knowledge operating similar networks for several
customers. The F5G Advanced network architecture shall support the operation "as a service" model for customer
premises networks specifically including the physical equipment, besides the already supported network and compute as
a service area.
4.14 Use of Optical In
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