5G Network Architecture. Andy Sutton Principal Network Architect Architecture & Strategy, TSO 16 th May 2018

Transcription

1 Network Architecture Andy Sutton rincipal Network Architect Architecture & Strategy, TSO 16 th May 2018 British Telecommunications plc 2017

2 Contents network architecture Options 1 & 2 Options 3 & 3x (EN-DC) Options 7 & 7x (NGEN-DC) Developing a network architecture Review a conceptual network architecture Optimising network architecture for services BT/EE trials - a few highlights Summary 1 British Telecommunications plc 2017

3 Architecture Options 1 & 2 1: Standalone LTE, EC connected 2: Standalone NR, NGCN connected EC NGC User plane S1-u Control plane S1-c User plane N3 Control plane N2 elte NR UE UE Release 15 UE 2 British Telecommunications plc 2017

4 Architecture option 3 & 3x now known as EN-DC 3: Non-standalone/LTE assisted, EC connected 3x: Non-standalone/LTE assisted, EC connected EC NGC EC NGC elte NR elte NR UE UE 3 British Telecommunications plc 2017

5 Architecture options 7 & 7x now known as NGEN-DC 7: Non-standalone/LTE assisted, NGC connected 7x: Non-standalone/LTE assisted, NGC connected EC NGC EC NGC elte NR elte NR UE UE 4 British Telecommunications plc 2017

6 3G network architecture - NR + NGC NSSF AUSF N13 UDM N9 - between s N14 - between AMFs N22 N12 N8 N10 AMF N11 SMF N7 CF N5 AF N15 N1 N2 N4 UE NR air i/f RAN N3 N6 DN Note: Focus on mobile however Access Network (AN) could be fixed 5 British Telecommunications plc 2017

7 3G Service Based Architecture NSSF NEF NRF CF UDM AF Nnssf Nnef Nnrf Npcf Nudm Naf Nausf Namf Nsmf AUSF AMF SMF NG-C N1 N2 N4 UE NR air i/f RAN N3 N6 DN 6 British Telecommunications plc 2017

8 For more information, read the IT Journal article 7 British Telecommunications plc 2017

9 Conceptual Network Architecture (1) I UDM CF small cells I External networks mm-wave Access Sync CDN Core Aggregation 8 British Telecommunications plc 2017

10 Conceptual Network Architecture (2) I UDM CF small cells I External networks mm-wave Access Sync CDN Core Aggregation 9 British Telecommunications plc 2017

11 Conceptual Network Architecture (3) I UDM CF small cells I External networks mm-wave Access Sync CDN Core Aggregation 10 British Telecommunications plc 2017

12 Conceptual Network Architecture (4) small cells I I UDM CF I External networks mm-wave Access Sync CDN Core Aggregation 11 British Telecommunications plc 2017

13 Conceptual Network Architecture (5) small cells I I UDM CF I External networks mm-wave Access Sync CDN Core Aggregation 12 British Telecommunications plc 2017

14 Low-latency access to apps, content and compute small cells I I UDM CF I External networks mm-wave Access Sync CDN Core Aggregation 13 British Telecommunications plc 2017

15 Ultra-low latency service optimisation small cells / // I I UDM CF I External networks mm-wave Access Sync CDN Core Aggregation 14 British Telecommunications plc 2017

16 BT/EE trials EE hits 2.8Gbps download speeds in UK-first trial University, BT and Nokia to conduct joint research into mobile networks in Bristol november/5g-mobile-networks.html Massive MIMO ark Huawei and EE Showcase Uplink and Downlink Decoupling oc in London 15 British Telecommunications plc 2017

17 Summary will address enhanced Mobile Broadband (embb), Ultra-Reliable & Low Latency Communications (URLLC) and massive Machine Type Communications (mmtc), use cases requires a new network architecture Many operators will commence service with an option 3x (EN-DC) network architecture The introduction of a Next Generation Core (NGC) will enable an evolution to an option 7x (NGEN-DC) network architecture NGC is the enabler for network slicing and service innovation NGC network can be grouped into two functional blocks, CF and Once NR coverage is comparable to 4G an operator may evolve to an option 4 architecture (NE-DC) An option 2 network will only be realised once all LTE spectrum is re-farmed to NR (or standalone use case) 16 British Telecommunications plc 2017

18 1 Thank You! Any questions?

19 Functional blocks within network architecture 1. AUSF = Authentication Server Function 2. UDM = Unified Data Management 3. NSSF = Network Slice Selection Function 4. NEF = Network Exposure Function 5. NRF = Network Repository Function 6. AMF = Core Access and Mobility Management Function 7. SMF = Session Management Function 8. CF = olicy Control Function 9. AF = Application Function 10. UE = User Equipment 11. RAN = Radio Access Network 12. = Centralised Unit 13. DU = Distributed Unit 14. = User lane Function 15. DN = Data Network, e.g. operator services, Internet or 3rd party services 18 British Telecommunications plc 2017

20 interfaces (reference points) N1: Reference point between the UE and the Access and Mobility Management function (AMF). N2: Reference point between the (R)AN and the Access and Mobility Management function. N3: Reference point between the (R)AN and the User plane function (). N4: Reference point between the Session Management function (SMF) and the User plane function (). N5: Reference point between the olicy Function (CF) and an Application Function (AF). N6: Reference point between the U function () and a Data Network (DN). N7: Reference point between the Session Management function (SMF) and the olicy Control function (CF). N7r: Reference point between the vcf and the hcf. N8: Reference point between Unified Data Management and AMF. N9: Reference point between two Core User plane functions (s). N10: Reference point between UDM and SMF. N11: Reference point between Access and Mobility Management function (AMF) and Session Management function (SMF). N12: Reference point between Access and Mobility Management function (AMF) and Authentication Server function (AUSF). N13: Reference point between UDM and Authentication Server function (AUSF). N14: Reference point between 2 Access and Mobility Management function (AMF). N15: Reference point between the CF and the AMF in case of non-roaming scenario, V-CF and AMF in case of roaming scenario. N16: Reference point between two SMFs, (in roaming case between V-SMF and the H-SMF). N22: Reference point between AMF and Network Slice Selection Function (NSSF). 19 British Telecommunications plc 2017