5g transport - standardization timetable (draft) · 2018-07-13 · sgsn 2g msc 2g a) b) c) pe pe pe...
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5G ConvergenceBroadband Forum 5G Work Overview and Status Update
Manuel PaulSenior Expert, Deutsche Telekom AG
Broadband Forum 5G Project Stream LeadBroadband Forum Board Member
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Broadband Forum 5G work overview
• 5G Fixed Mobile Convergence Use of common 5G Core across Wireline & Wireless Access Networks– Integration: access directly to 5G core with full operational integration– Interworking: subscriber access to 5G Core componentsSupporting coexistence of 5G & legacy services on a common access network
• 5G Fixed Access and TransportBackhaul & Fronthaul: Access and transportRouting & Transport: enhancements for 5G covering capacity, performance reliability & determinism
• Network Slicing, applied to the above areas
CloudCO/ Local
datacenters
5G Mobile/WirelineConverged Transport
Data Center Data CenterInterconnect
Professional Building Multi-Dwelling /
CloudCO
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5G Fixed Mobile Convergence
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Specific Deliverables of the BBF 5G-FMC Project
• Provide recommendations for 5G system architectural & functional integration− related to convergence items identified during the joint 3GPP-BBF Workshop in 2017
• Devise migration and coexistence strategies− Meeting operator requirements for direct connection to the 5G core, as well as for
interworking of existing users and deployed equipment into a 5G core
• Specify − a 5G Access Gateway Function (AGF) that adapts the wireline access onto the 5G core− Several architectural deployment options as well as underlying infrastructure aspects− Further related aspects as they become identified over the course of this work
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High Level Architecture
NG RAN
Wireline Access Node
WirelineCore Network
DataNetwork
5GAGF
5GRG
5GFMIF
RG
5G ConvergedCore Network
Interworking
Co-existence
5GRG
Standalone
UserPlane
ControlPlane
N2 & N3
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High Level Architecture- and elements to be standardized
NG RAN
Wireline Access Node
WirelineCore Network
DataNetwork
5GAGF
5GRG
5GFMIF
RG
5G ConvergedCore Network
Interworking
Co-existence
5GRG
Standalone
UserPlane
ControlPlane
N2 & N3
Generalized Approach agreed in the BBF
BBF Specified Items 3GPP Specified Items
User Equipment Relay
Fixed Mobile Interworking Function
Any support for Legacy Services by 5G Core
Access Gateway Function
Wireline Control & Data Plane transport
Customer premises changes for wireline
5G Residential Gatewayand CPE Management
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BBF 5G FMC - Work in Progress
• SD*-407 / SD-420 5G Fixed Mobile Convergence– SD-407: Root document & repository for ongoing 5G-FMC study work
• Subject Areas: Integrated, FWA, Interworking, Hybrid, UE Relay– SD-420-R1: containing recommendations distilled from SD-407 to 3GPP (externally liaised)
• First revision released per Jan15th: key issues + proposed solutions• New revisions to follow as further subject areas mature and conclude
Liaisons with 3GPP SA2, ITU-T SG13/JCA IMT-2020
• SD-406 End-to-End Network Slicing– Ecosystem analysis nearly complete– Potential internal and external handover points being worked out Liaisons with 3GPP SA5, GSMA, ITU-T SG13/JCA IMT-2020, 3GPP RAN3
*SD (Study Document) is the BBF’s terminology for work being developed as the source of the membership work
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Service model dependent key issues• Session management• Addressing for IPv4 and IPv6, • Home LAN support• QoS
Service model independent key issues • Registration & Connection management procedures• Transport and Encapsulation in the Access• Regulatory Requirements• Operational requirements• Resource management in the access• IPTV and multicast• Network Slice Selection
Structured per service models and deployment scenarios
Plan to provide next extract of recommendations to 3GPP by July’18
BBF 5G FMC Work – Content of SD-407
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2020+
2019
2017/18
Up to 2016
BBF 5G FMC - Standardization TimetableGoal
Common Core Network across Wireline and Wireless Access Networks
3GPPNormative Work
5G Ph 2 - R16
BBFNormative Work
5G
3GPPNormative Work
5G Ph 1 - R15
3GPPStudy Work
5G Ph 2 - R15
BBFExisting TRs
BBF5G Studies
FMCIssue List
3GPPStudy Work
5G Ph 1 - R14
BBFSD-407/SD-4205G FMC
• Session Management• RG authentication• QoS• Etc..
Recommendations to integrate fixed components with 3GPP defined 5G interfaces.Intermediate “Sync” with 3GPP
Specifies new Access Gateway Function and modifications on RG, ACS, Access Nodes, etc.
BBFSD-406
Net SlicingRecommendations to use network slicing in fixed and FMC networks
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BBF 5G FMC - Standardization Process
• Collaboration with 3GPP– Kickoff in February 2017 at joint 3GPP-BBF workshop in Dubrovnik– Parallel Studies & Coordination - aligned with 3GPP Release 16 Timeline
• BBF SD-407 5G Fixed Mobile Convergence Study• 3GPP 5WWC 5G Wireless Wireline Convergence Study• 3GPP ATSSS Access Traffic Steering, Switching and Splitting Study
Studies expected to be completed by 2018Q4, with specification work starting before year end
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5G Transport
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5G Transport: Where have we come from?
HDLC TNL
HDLC TNL
Note: one BS can support multiple TNLSs. One Cell Site Gateway can connect multiple BSs.
Mobile Aggregation
Site Gateway (MASG)
IP TNL
ATM TNL
TDM TNL
IP TNL
ATM TNL
TDM TNL
Aggregationnetwork
[1]
[2]
BS
Access Aggregation
[3]
Access networkxDSL,
microwave,Leased Line,
GPON,Pt-to-pt fiber
Access Node
Cell SIteGateway(CSG)
Edge Node
Core
Iur
Abis
A
Iub
Iub
Iub
RC
MPLS transport network
MPLS-awareequipment
Gb
Iu-PS
Iu-CSA
AbisMSC 3G
SGSN 3G
SGSN 2G
MSC 2G
a)
b)
c)
PEPE
PE PE
PE PE
P
P
[4] Abis
Abis
TNL PW or TNL LSP
T-PE S-PE
T-PET-PE S-PE Pe)
f)
Edge Node
Edge Node
Edge Node
P
P
P
P
d)PE PEP P P
P
Iub
Gb
SS-PW
MS-PWT-PE
Overlay model based on L2VPN in Aggregationnetwork could be supportedfor each scenario betweenMPLS routers
RC
IP/MPLS Core
networkIu-CS
Iu-PS
MPLS in Mobile Backhaul Initiative (MMBI) Reference Architecture - ~2007-2015
From 2G to
“LTE-A”
HDLC TNL
HDLC TNL
Note: one BS can support multiple TNLSs. One Cell Site Gateway can connect multiple BSs.
Mobile Aggregation Site Gateway (MASG)
IP TNL
ATM TNL
TDM TNL
IP TNL
ATM TNL
TDM TNL
Aggregation network
[1]
[2]
BS
Access
Aggregation
[3]
Access network
xDSL, microwave,
Leased Line,
GPON,
Pt-to-pt fiber
Access Node
Cell SIte Gateway(CSG)
Edge Node
Core
Iur
Abis
A
Iub
Iub
Iub
RC
MPLS transport network
MPLS-aware equipment
Gb
Iu-PS
Iu-CS
A
Abis
a)
b)
c)
PE
PE
PE
PE
PE
PE
P
P
[4]
Abis
Abis
TNL PW or TNL LSP
T-PE
S-PE
T-PE
T-PE
S-PE
P
e)
f)
Edge Node
Edge Node
Edge Node
P
P
P
P
d)
P
P
Iub
Gb
SS-PW
MS-PW
T-PE
Overlay model based on L2VPN in Aggregation network could be supported for each scenario between MPLS routers
RC
IP/MPLS Core network
Iu-CS
Iu-PS
MSC 3G
SGSN 3G
SGSN 2G
MSC 2G
PE
PE
P
P
*
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5G Transport: Where are we going?To meet needs of 5G we must integrate the functions below into what we have today• SDN • Segment Routing• Service Function Chaining• Ethernet VPN• Deterministic Transport
• IEEE TSN• IETF DetNet• FlexE
• Virtualization• Faster speeds,
higher capacity• Intelligent management
& orchestration
IP TNL
MSC
PDN GW
SGSN
HSS
IP TNL
IP TNL
IP TNLAccess
Network
AggregationNetwork
Edge Node
Access NodeCSG1Abis
CSG2
lub
AccessNetwork
CSG3
BTS
NB
eNB S1/X2
Edge Node BSC,
RNC, MME
or S-GW
CoreNetwork
a/LUc S
S5/S8S3/S4/Gb/luPS
a/LUc S
Mobile AggregationSite Gateway
4VPLS
CSG1CSG2CSG3
CSG1CSG2CSG3
EthEth VPLS
Eth
Eth
Eth
Eth
Eth
VPLS
H-VPLS
VPWSEth
Spoke PWsCSG1CSG2CSG3
CSG1CSG2CSG3 VPWS
Eth PW
VSI
Cell Site Gateway
L2VPN MPLS transport network solutions
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5G Transport - Standardization Timetable
GoalTransport supporting 5G demands and capabilities
3GPPNormative Work
5G Ph 2 - R16
2020+
2019
3GPPNormative Work
5G Ph 1 - R15
3GPPStudy Work
5G Ph 2 - R15
BBFExisting Work
TR-350, TR-221 (Amd.1&2)
2017/18
3GPPStudy Work
5G Ph 1 - R14Up to 2016
IEEE, IETF, SG15, MEF
5G Work
Protocols, Specs.,Timing &
Syncronisation Recs
IEEE standards.IETF RFC
ITU SG15 SyncMEF Services
BBF5G Study and Normative
TRs/MRsSDs
Based on 3GPP Rel15 and beyond
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Broadband Forum5G Work
• Work is operator-driven & based on use cases• Converged Core Network Functions and Interfaces• Common infrastructure (transport and cloud)• Network Slicing• Transport: new capabilities to support advanced 5G services
(higher speeds, deterministic transport)
• Timeline of BBF work aligned with 5G industry roadmap• Cooperation with peer SDO and industry fora• Interaction and Coordination with the ITU-T
• On the IMT-2020 roadmap with the JCA IMT-2020• On FMC with JCA IMT-2020, potential for SG13 (Q23/13) to coordinate• On transport & synchronization for 5G Back-&Fronthaul with SG15 (WP3/15) • On the use of optical access technology (e.g., NGPON-2) with SG15 (WP1/15)
Summary
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more at broadband-forum.org/5G
5G ConvergenceBroadband Forum 5G work overview5G Fixed Mobile ConvergenceSpecific Deliverables of the BBF 5G-FMC ProjectHigh Level ArchitectureHigh Level ArchitectureBBF 5G FMC - Work in ProgressFoliennummer 8BBF 5G FMC - Standardization TimetableBBF 5G FMC - Standardization Process5G Transport5G Transport: Where have we come from?Foliennummer 135G Transport - Standardization Timetable���Broadband Forum� 5G WorkFoliennummer 16