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5G Concept
1.
5G Concept MEF
GEN14
2.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 2 ›What is 5G and what should it provide? ›5G spectrum? ›Role of LTE evolution in the 5G context? ›New radio access technologies? ›Transport impact? Outline
3.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 3 whAt is 5G? A wide range of requirements More than just bigger and better mobile broadband A platform on which any future wireless application can be implemented Evolution of existing radio access + New radio-access technologies
4.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 4 5G spectrum range 5G spectrum range 1 GHz 3 GHz 10 GHz 30 GHz 100 GHz › From below 1 GHz up to 100 GHz – Lower frequencies (< 6 GHz) will be the backbone, providing 5G services with wide-area coverage – Higher frequencies (>10 GHz) for extreme traffic capacity and data rates in dense scenarios › 2020: LTE deployed in most available lower-frequency spectrum Allow for backwards-compatible introduction of 5G capabilities at lower frequencies
5.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 5 › LTE evolution = backwards-compatible evolution – Strive to meet 5G requirements – Possible to retain legacy UEs on the same carrier quick introduction of 5G services – LTE should evolve as far as possible, constrained by backwards compatibility › Further enhanced MBB & MTC › Higher capacity, lower latency, higher reliability, lower energy consumption, … 5G Radio Access › New RAT = no backwards-compatibility constraints – Further optimization without compatibility constraints
6.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 6 spectrum for “New RAT(s)” 1 GHz 3 GHz 10 GHz 30 GHz 100 GHz › Higher-frequency spectrum (> 10 GHz) – May be different solutions for different spectrum, e.g. sub-30 GHz vs. “true” mmw › New spectrum below 6 GHz if available › Gradual migration into currently used spectrum Gradual migration of new technology into existing spectrum Evolution of LTE New technology
7.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 7 Overall 5G solution Common “higher layers” Tight interworking “L1/L2” 5G structure Gradual migration into existing spectrum Existing spectrum New spectrum LTE evolution “New RAT” Backwards compatible No compatibility constraints Different detailed solutions depending on frequency
8.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 8 › Dual connectivity between new RAT on higher frequencies and wide-area-covering LTE on lower frequencies – Will initially be a common scenario – To simplify introduction of new RAT Tight interworking › D2D using new RAT controlled by overlaid wide-area LTE network › User-plane aggregation of new RAT and LTE on lower frequencies – Full bandwidth can be retained at least for new device – For more easy/smooth migration of new RAT into existing spectrum
9.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 9 5G Technology areas Extension to higher frequencies Complementing lower frequencies for extreme capacity and data rates in dense areas Multi-antenna technologies For higher as well as lower frequencies Beam-forming for coverage Multi-user MIMO for capacity Multi-site connectivity Multi-site transmission/reception Multi-layer connectivity … Ultra-lean design Minimize transmissions not related to user data Separate delivery of user data and system information Access/backhaul integration Same technology for access and backhaul Same spectrum for access and backhaul Device-to-device communication Network controlled D2D Spectrum flexibility Unlicensed Shared licensed Network sharing Complementing dedicated licensed spectrum Flexible duplex Spectrum sharing
10.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 10 System Control Plane › Separate user-plane data transmission from system functionality – System information and control provided wide-area by overlaid layer – Underlaid network nodes only active when user-data to convey › Major part of system information provided on a per-need basis – Minimize amount of broadcast system information – Separate of user data from control and system information multi-layer connectivity › Multiple RATs may share the same system control plane
11.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 11 › Multi-layer connectivity – Between overlaid low-frequency and underlaid high-frequency layers › Robustness – Spotty coverage at higher frequency bands › Multi-site transmission – Reception of multiple beams › Diversity and robustness – Rapid changes in propagation conditions connectivity to multiple sites beneficial Multi-Site Connectivity
12.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 12 Network-controlled direct communication Device-based Relaying Direct communication Unicast Unicast Broadcast / Groupcast Network-controlled direct communication Device-to-device communication › Tightly integrated device-to-device communication under network control
13.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 13 Backhaul-Access Convergence › Dense deployments – challenging backhaul – Access moving up in frequency to get more spectrum and bandwidth – Wireless backhaul moving down in frequency to handle nLOS › Integration of “backhaul” and “access” – Same spectrum and technology for the two – Dynamic sharing of resources between the two – Single management system › A first step towards multi-hop communication
14.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 14 Transport Data PLANE Key challenges Number of transport Capacity clients Latency • Site/cell densification will lead to a larger number of transport clients • Up to a factor 100 small cells per macro in some areas • Order of magnitude higher traffic densities • Several orders of magnitude in some areas/locations • Additional order of magnitude required capacity for specific segments and deployment models (e.g. C-RAN) • Support for low latency services considered as one important aspect of 5G (e.g. critical MTC). • Stringent latency requirements associated with supporting particular RAN deployment models (CPRI fronthaul, CoMP, etc) Affordable & Sustainable Flexible
15.
EAB-14:068423 | Commercial
in conf idence | © Ericsson AB 2014 | 2014-11-18 | Page 15 › 5G: “Seamless wireless Internet” – “10 Gbps” throughput on air interface › More bandwidth (100G -> 1T) needed on backhaul › e2e transport + radio solutions – “1 ms” latency on air interface › Lower latency on backhaul and fronthaul › More localised X2 routing over midhaul (including IPsec) › 5G target architecture – Ultra dense, 10 m cell range › Use any available transmission for backhaul, midhaul & fronthaul › Cloud-based security infrastructure › ”Intelligent” transport (e.g., SDN, SON) – New Licensed/unlicenced spectrum › Available for wireless backhaul 2020: small cells and 5G - impact on Transport, sync, security? ↑ transport Evolution: latency, BW, connections, options LTE will become the dominant technology < 6 GHz with backhaul, midhaul & fronthaul transport RRU Backhaul Basestation site Network controller / gateway site SGW, MME Midhaul Fronthaul Pico eNB Macro eNB Small cell site Remote radio site Backhaul
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