COMBO Architecture Demo Day Lannion 28’th of April This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Fixed and Mobile Convergence (FMC) Today‘s network architecture Potential converged architecture Fixed and mobile networks Common architecture for fixed and § are developed independently of mobile network requires interaction at each other different points: § Structural convergence § have only very limited joint § Common use of resources e.g. usage of infrastructure infrastructure, technology, § have independent network interfaces, transport mechanisms operation, control and § Functional convergence management § Unification of fixed and mobile network functions FMC only at service level (e.g. IP Multimedia Subsystem) Functional Fixed Aggregation convergence Core Fixed Fixed Fixed Functional Core Structural access access convergence convergence Aggregation Mobile Functional Network Network Core convergence Mobile Radio Radio Core access access COMBO – Lannion - April 2016 2 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Structural Convergence Home/Building Small Cell Macro site CO Core CO Main CO Core network Converged broadband fixed and λ 3 λ 2 mobile Access/Aggregation transport λ 1 network BBU - H λ 4 λ 1 λ N OLT λ 5 λ N BBU - H Technical challenges: • Common transport architecture for OLT λ 1 λ N fixed, mobile and Wi-Fi clients for back/ fronthaul? • Impact of RAN co-ordination and structural convergence centralization? • Impact of future 5G? RGW Key ques=on: What is techno-economically feasible? COMBO – Lannion - April 2016 3 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Functional Convergence Simplified, flexible network architecture Home/Building Small Cell Macro site CO Main CO Core CO Core network λ 3 λ 2 λ 1 BBU - H SDN/NFV Converged broadband fixed and λ 4 λ 1 λ N mobile Access/Aggregation transport OLT functional convergence λ 5 network λ N BBU - H OLT λ 1 λ N • Functional convergence for fixed, mobile and Wi-Fi networks with respect to • converged subscriber and session management RGW • advanced interface selection and route control • Analysis of centralized vs. de-centralized architecture for functional distribution COMBO – Lannion - April 2016 6 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
COMBO T3.3 – Structural convergence This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Introduction & Requirements COMBO – Lannion - April 2016 6 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Structural convergence? Key determining factors § Traffic requirements and network dimensioning • Mobile/fixed traffic, capacity, latency, etc § RAN configuration and architecture • Site/antenna configuration, radio coordination schemes, RAN system split § Geo-areas (dense urban, urban, suburban, rural) • Area sizes, area densities, existing site structures, existing infrastructure.. § Technology maturity and system performance • Power budget, system reach, feasible system configurations, optical amplifiers § Equipment and component cost • Optical components, boards, chassis, etc COMBO – Lannion - April 2016 7 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Structural convergence? Key determining factors § Traffic requirements and network dimensioning • Mobile/fixed traffic, capacity, latency, etc § RAN configuration and architecture • Site/antenna configuration, radio coordination schemes, RAN system split § Geo-areas (dense urban, urban, suburban, rural) • Area sizes, area densities, existing site structures, existing infrastructure.. § Technology maturity and system performance • Power budget, system reach, feasible system configurations, optical amplifiers § Equipment and component cost • Optical components, boards, chassis, etc COMBO – Lannion - April 2016 8 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Radio coordination scheme Requirements & gain Coordina/on Coordina/on Feature Max Throughput Max Capacity Delay Class Classifica/on Gain Gain Very Tight Fast UL CoMP High High 0.1-0.5 ms (UL joint recep=on/selec=on) Combo focus Coordina=on Fast DL CoMP Medium Medium (coordinated link adapta=on, coordinated scheduling, coordinated beamforming, dynamic point selec=on) Combined Cell Medium Tight Slow UL CoMP Medium Small 1-20 ms Coordina=on Slow DL CoMP Small (e.g., Postponed Dynamic Point Blanking) Moderate FeICIC Medium Small 20-50 ms Coordina=on Small: ≤20% Medium: 20-50 % High: ≥ 50% Based on discussion with „mobile experts“ @ DTAG & Ericsson COMBO – Lannion - April 2016 9 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Two main RAN deployment options Backhaul Fronthaul § An interconnection of X2 interface § X2 interfaces are collocated, X2 required, link distances between delay close to zero sites will cause delay § Fulfils inherently X2 delay requirements for CoMP < 0.5 ms § To support CoMP delay requirements < 0.5 ms requires interconnection of § RRU-BBU delay << 1 ms (typically CO or Main CO location 0.4 ms RTT assumed) § Backhaul: X2 interconnection on CO/Main CO required to support CoMP with delay requirements < 0.5 ms § Fronthaul: Fulfils inherently X2 delay requirements for CoMP < 0.5 ms COMBO – Lannion - April 2016 10 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Delay constraints and implications on BBU placement and X2 interconnection Central Office (CO) Main CO Core CO RAA CO Mobile Core Node 100% Assumptions typically <5 km § Fibre propagation delay only (no data 99% (400 µs) processing in between) § Round trip time <40% (400 µs) between RRH to BBU (Fronthaul) or X2-interconnection ≤ 400 µ s <20% (400 µs) RAA = RAN Access Areas X2 interconnection for backhaul or BBU Hotel placement (fronthaul) has to be done at or below Main CO in order to meet the delay requirements. COMBO – Lannion - April 2016 11 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
RAN architectures Backhaul and fronthaul All Backhaul (BH) All Fronthaul (FH) Mix of SC FH and MBS BH Centralised in Main CO Centralised in Main CO Centralised in Main CO Main Main Main S1 traffic S1 traffic S1 traffic BBU BBUH/ RCC RCC to BNG to BNG to BNG Hotel CO CO RCC CO IPoE IPoE CPRI BBU BBU BBU BBU BBU BBU CPRI IPoE CPRI BBU BBU BBU BBU BBU BBU BBU Decentralised SC BH to MBS Decentralised SC FH to MBS MBS MBS Main Main coordina=on via Macro BS coordina=on via BNG BNG CO CO X2 over BNG X2 over BNG Small cell IPoE IPoE BBUH: BBU Hotel RCC RCC RCC BBU BBU BBU RCC: Radio Coordina=on Controller BBUH/ BBUH/ BBUH/ RCC RCC RCC IPoE CPRI BBU BBU BBU BBU BBU BBU BBU COMBO – Lannion - April 2016 12 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Architecture options and system concepts COMBO – Lannion - April 2016 13 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Access solutions Main CO WS-DWDM: Wavelength selec=ve– Dense WDM WR-DWDM: Wavelength routed – Dense WDM TWDM: TDM WDM * NG-PON2 scenario with coexistence only on feeder fibre not shown here RRU: Remote Radio Unit COMBO – Lannion - April 2016 14 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
Different convergence architectures Converged NG-PON2 (backhaul) ODN co-existence with § typically 1:128 split for residential customers due to mass market roll out (16 wavelengths of NGPON2 are delivered to 4 Cabinets) WR-DWDM PON (backhaul) Dedicated ODN for services § that require PtP wavelength services, i.e. mobile backhaul and cabinet backhaul (80 wavelengths) RCC: Remote Coordinator Controller COMBO – Lannion - April 2016 15 This presentation is property of the COMBO Consortium and shall not be distributed or reproduced without the formal approval of the Project Board
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