Converged Ethernet for Next- Generation x-haul

Transcription

1 intelligent Converged Network consolidating Radio and optical access arounduser equipment Converged ernet for Next- Generation x-haul Daniel Muench (EuCNCWorkshop Towards Converged X-Haul for 5G Networks A joint workshop of the icirrus, 5G-XHaul and 5G-Crosshaul projects) This project has received funding from the European Union s Horizon 2020 research and innovation programme under grant agreement No (icirrus)

2 Motivation ernet as Convergence Layer for Next-Generation x-haul Applying ernet allows: Multiple topologies ernet-based OAM (Operation Administration and Maintenance) Aggregation and different treatment of multiple traffic classes Being agnostic to any functional split

3 Topology:Point-to-point -> -Aggregator CPRI CPRIo -Aggregator (-Switch with support for TSN) BBU= Base Band processing Unit CPRI= Common Public Radio Interface = ernet = Radio Remote Head TSN= Time-Sensitive Networking Point-to-point -Aggregator (-Switch with support for TSN) CPRIo Next-Generation Central Office

4 Topology: Tree topology -> addanddropofcells CellB CPRI CPRIo Next-Generation Central Office -Aggregator -Aggregator CPRIo CellA -Aggregator CPRIo BBU= Base Band processing Unit CPRI= Common Public Radio Interface = ernet = Radio Remote Head TSN= Time-Sensitive Networking

5 Topology: Ring topology ->Redundancy CellB CPRI CPRIo CPRIo -Aggregator -Aggregator Next-Generation Central Office BBU= Base Band processing Unit CPRI= Common Public Radio Interface = ernet = Radio Remote Head TSN= Time-Sensitive Networking

6 ernet-based OAM (Operation Administration and Maintenance) OAM for Service Level Agreement (SLA) and Self-Optimizing Networks (SON) CPRI CPRIo Internal probes -Aggregator (int.) -Aggregator Pluggable Probes CPRIo (ext.) Next-Generation Central Office BBU= Base Band processing Unit CPRI= Common Public Radio Interface = ernet = Radio Remote Head TSN= Time-Sensitive Networking

7 Aggregation and different treatment of multiple traffic classes Aggregation and different treatment of multiple traffic classes supported by IEEE time-sensitive networking(tsn) Timing and sync data User data Control data Other data Filtering/ Policing Transmission selection/ Shaping/ Scheduling

8 Agnostic to any split point Agnostic to any split point(also different split points for UL and DL possible) MAC split Upper Phy split Lower Phy split Centralized split (stateoftheart) QAM MAC FEC IFFT + CP DAC IF/RF map Downlink (DL) MAC split Upper Phy split Lower Phy split Centralized split (stateoftheart) QAM MAC FEC FFT -CP ADC IF/RF demap Uplink (UL)

9 (Preliminary) Requirements (Preliminary) Requirements (condensed from icirrus D2.1, D3.1 and D3.2) Data rate (trunk line) Max. Latency (round trip) Max. Latency imbalance Min. frequency accuracy Min. phase and timing accuracy (CPRI) 100Gb/s to 400Gb/s 150us (CoMP) 440us (no CoMP) Modified split (no CoMP) 100Gb/s to 400Gb/s 440us Modified split (CoMP) 100Gb/s to 400Gb/s 150us +/-16ns +/-163ns +/-163ns +/-2ppb +/-2ppb +/-2ppb +/-10ns (MIMO, TX- Diversity) +/-1.36 µs (LTE TDD) +/-30ns +/-30ns Max. BER

10 Standard activities IEEE 802.1CM Mobile fronthaul IEEE Radio over ernet encapsulation IEEE 1914 Next Generation Fronthaul Interface

11 Standard activities IEEE 802.1CM Mobile fronthaul IEE802.1CM = Mobile fronthaulprofileforieee time-sensitive networking mechnanisms Status Draft 0.3: considers IEEE 802.1Q (VLAN Bridge specification) considers IEEE 1588 Synchronization considers frame preemtion(e.g. IEEE 802.1Qbu, IEEE 802.3br) considers applying IEEE 802.1CB Seamless Redundancy RequirementsarecurrentlyunderdiscussiontogetherwiththeCPRI community

12 Standard activities IEEE Radio over ernet encapsulation Scope: Encapsulation and mapping of radio protocols to be fronthauledover ernet networks Achieving QoS is not focused (->IEEE 802.1CM) Purpose: exact header formats and packet encapsulations Status from D1.0 (28 May 2016) 3 Types: simple tunneling mapper (encapsulating all), structure agnostic mapper (encapsulating after removing encoding (8/10, 64/66)), structure aware mapper (actual mapping)

13 Nodraftavailableyet/ just started Standard activities IEEE 1914 Next Generation Fronthaul Interface

14 Conclusion 5G challenges the current fronthaul model fronthaul/backhaul boundary in 5G is blurred ->opens an opportunity for an open x-haul solution based on ernet Meeting the timing and latency constraints for next-generation fronthaul will require a strict control of timing and synchronization hot research item in icirrusand a study item in standardization icirruswill deliver a prototype network for performance measurements with different mobile solutions (OAI, 60GHz, legacy CPRI)

15 References -Datarates: , METIS II, Deliverable D1.1 Refined scenarios and requirements, consolidated use cases, and qualitative techno-economic feasibility assessment , MGMN Alliance, 5G White Paper , Small Cell Forum, Crossing the Chasm: Small Cells Industry , Jungnickel, V.; Manolakis, K.; Zirwas, W.; Panzner, B.; Braun, V.; Lossow, M.; Sternad, M.; Apelfröjd, R., The role of small cells, coordinated multipoint, and massive MIMO in 5G , Small Cell forum, Small Cell Virtualization Functional Splits and Use Cases -Latency: , 3GPP, TS LTE, Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Univeral Terrestrial Radio Access Network (E-UTRAN) Overall Description , China Mobile Research Institute, White Paper of Next Generation Fronthaul Interface v , NGMN Alliance, Fronthaul Requirements for C-RAN , icirrus, D2.1 icirrus - Intelligent C-RAN Architecture , CPRI, CPRI functional decomposition requirements , Nokia, White Paper Evolution to Centralized RAN with Mobile Fronthaul , Small Cell forum, Small Cell Virtualization Functional Splits and Use Cases -Latency Imbalance: , icirrus, D2.1 icirrus - Intelligent C-RAN Architecture , 3GPP, TS LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management , Nokia, Evolution to centralized RAN with mobile fronthaul, Frequency: , 3GPP, TS36.104: Evolved Universal Terrestrial Radio Access(E-UTRAN); Base Station (BS) radio transmission and reception , Ericsson AB, Huawei Technologies Co.Ltd, NEC Corporation, Nokia Networks, Alcatel-Lucent, CPRI Specification V7.0 ( ): Common Public Radio Interface (CPRI) Interface Specification , icirrus, D3.1 icirrus - Verification of ernet as transport protocol for fronthaul / midhaul , CPRI, CPRI functional decomposition requirements , China Mobile Research Institute, White Paper of Next Generation Fronthaul Interface v1.0 -Phase and timing: , 3GPP, TS36.104: Evolved Universal Terrestrial Radio Access(E-UTRAN); Base Station (BS) radio transmission and reception , Ericsson AB, Huawei Technologies Co.Ltd, NEC Corporation, Nokia Networks, Alcatel-Lucent, CPRI Specification V7.0 ( ): Common Public Radio Interface (CPRI); Interface Specification , CPRI, CPRI functional decomposition requirements , China Mobile Research Institute, White Paper of Next Generation Fronthaul Interface v , icirrus, D3.1 icirrus- Verification of ernet as transport protocol for fronthaul / midhaul -BER: , NGMN Alliance, Fronthaul Requirements for C-RAN , icirrus, D3.1 icirrus - Verification of ernet as transport protocol for fronthaul / midhaul , China Mobile Research Institute, White Paper of Next Generation FronthaulInterface v , CPRI, CPRI functional decomposition requirements , Nokia, Evolution to centralized RAN with mobile fronthaul, 2016.