SMALL CELLS AND HETEROGENEOUS NETWORKS

Transcription

1 SMALL CELLS AND HETEROGENEOUS NETWORKS José Vilela June 19 th,

2 AGENDA 1. INTRODUCTION 2. HETEROGENEOUS NETWORKS CONCEPTS MOTIVATIONS CHALLENGES 3. SMALL CELLS COMMON FEATURES NODE TYPES TECHNICAL ASPECTS 4. WRAP-UP 2

3 WHAT S GOING ON WITH MOBILE NETWORKS? 3

4 THE GAME HAS CHANGED Pbytes/ month 37% of Internet traffic during prime time is online video 5000 X30 mobile traffic Dongle/tablets Smartphones Feature phones Connected, IP-enabled Devices Million devices connected by 2014 Video ~ 70% of internet traffic by 2014 Smartphones Million connections by 2015 Mobile Internet 70% of mobile traffic by % of mobile traffic by 2014 Source: Bell Labs analysis 4

5 Mobile Data Traffic ( ) 5

6 TRAFFIC GROWTH EQUALS BASE STATION GROWTH Base Station Requirements in a Tier 1 City 2,500 2,000 Based on Downlink BW Based on Uplink BW Based on Erlangs Based on Signaling 1,500 1, Source: Bell Labs 3 Technologies, 5 spectrum bands, 6 What s next?

7 KEY CHALLENGES SPECTRUM EXHAUST COVERAGE/CAPACITY COST iciency (bps/hz) 4 Limits of 2G, 3G, 4G Infeasible region LTE SHANNON-BOUND Dense Outdoor Hot Spots Residential Indoor Hot Spots Peak data effi 2 GSM HSDPA Coverage Holes Signal-to-noise ratio (db) Rural Areas PCMD data captured during busy hour indicates that congestion is localized and better addressed by targeted deployments Goal: Improving QoE and lowering cost in a non-obtrusive manner 7

8 HETEROGENEOUS NETWORKS 8

9 HETEROGENEOUS NETWORK COMBINING STRENGTHS 3G/4G Macro Home Small Cell 3G/4G Macro Wi-Fi Enterprise Small Cell Distributed Antenna Metro Cell WiFi Hotspots Enterprise Small Cell 9

10 HETNET ARCHITECTURE AAA HLR Enterprise Macro Cell Home cell MME/SGSN ANDSF WLAN AP (Wi-Fi) WIRELESS HETEROGENEOUS NETWORK CONVERGED WIRELESS CORE Internet Metro cell Entreprise cell WLAN GW SGW/PGW/GGSN PCRF Residential NETWORK MANAGEMENT CDN OAM 10

11 MORE COMPLEX MORE EFFICIENT 2G/3G Macro LTE Macro 1 2 2G/3G/LTE Metro + Home Cells 3 Metro UE stays on Macro layer as it moves through the network UE moves between Macro and Home Cells UE accesses 3G and 4G Macro, Metro, and Home cells Home Home Traffic is distributed intelligently across RAN technologies, frequencies, and node types 11

12 HETNET MOTIVATIONS COVERAGE TRUE UBIQUITY Rural areas, deep indoor settings, homes in tall buildings or remote settings, entreprise campuses, construction site, etc. WHY HETNET? CAPACITY TO DEAL WITH THE NEXT MILLION DEVICES Higher spectrum efficiency by reduced cell radius Higher baseband capacity per square meter QUALITY OF EXPERIENCE TO DELIVER NEXT GENERATION SERVICES Video, video, video... Downlink, Uplink, Interactive, Immersive 12

13 HETNET CHALLENGES INTERFERENCE MOBILITY BACKHAUL PROVISIONING 13

14 SELF-ORGANIZING NETWORKS (SON) PROVISIONING MOBILITY SON COGNITIVE RADIO Integration Optimization Site acceptance INTERFERENCE Continuous optimization OAM Selfconfiguration Automatic Neighbour Relation Interference Management Load Balancing Handover Optimization 14

15 MOBILE BACKHAUL IP ENABLES SIMPLICITY Microwave Macro Cell GE Core Site TD-LTE Wi-Fi PTMP IP TRANSPORT NETWORK 6-38GHz 80GHz Any Wireless Backhaul Fiber OLT G-PON/ADSL Fiber splitter CMTS Fiber HFC DOCSIS 3.0 splitter Coax Any Fixed Backhaul 15

16 What s in a Small Cell? 16

17 COMMON FEATURES SHORT RANGE FROM 10 TO SOME HUNDRED METRES In contrast with typical mobile macrocell of up to several tens of kilometers. TRANSFORMATION FRAMEWORK LOW POWER TYPICALLY UNDER 0.5 WATT Mostly under power threshold for required licensing About 25 mw in home versions for added safety LOW COST MINIMUM INFRASTRUCTURE REQUIREMENTS Taking advantage of pre-existing infrastructure indoor and outdoor 17

18 NODE TYPES Targeted Segments HOME CELL Residential ENTERPRISE CELL Enterprise METRO CELL INDOOR Shopping Malls, Indoor spots Capacity METRO CELL OUTDOOR Metro cells City Squares, Villages, Stadiums 18

19 ALCATEL-LUCENT LIGHTRADIO TM SMALL CELLS 9361 Home Cell 9362 Enterprise Cell 9362 Enterprise Cell 9363 Metro Cell Indoor WCDMA 9364 Metro Cell Outdoor WCDMA 9764 Metro Cell Outdoor W-CDMA 9768 Metro Radio Outdoor LTE 9764 Metro Cell Outdoor LTE Private Small Cells Metro Cells 3G/4G Macro Home Small Cell WiFi Distributed Antenna 3G/4G Macro Enterprise Small Cell Metro Cell WiFi Hotspots Enterprise Small Cell 19

20 LIGHTRADIO tm SMALL CELLS PORTFOLIO 9361 HOME CELL Main features 4 users capacity 20 mw output power 2100MHz UMTS operating band 2100MHz UMTS sniffing band 900/1800MHz GSM sniffing band Full rate HSPA Ethernet backhauling Security through crypto memory or digital certificate Free standing and wall mounting Plug and play installation, no radio planning 20

21 LIGHTRADIO tm METRO FAMILY MAST MOUNTING WITH SEPARABLE RF FROM TRANSPORT MODULE Passive Cooling, Designed for simple transport connectivity 21

22 Wrap-up! 22

23 NEXT NETWORKS WILL BE HETEROGENEOUS Reference point : 3 macro LTE BTS Dense Paris Area Traffic increase forecast Metro cells densification year over year (year 1 = 4, Year 2 = 7, Year 3 = 15, Year 4 = 19) Capacity close to the user = best option for downlink = only option for uplink 23

24 FUTURE NETWORKS WILL BE VIRTUAL Virtual BTS Virtual Control Technology Agnostic Active Antennas and MB-RRH RF in all bands MHz SoC-based BBU (2G/3G/LTE) Flexible and Scalable Different deployment options (conventional, clustered or pooled) Virtualization and processing aggregation Ultra Compact Near Zero footprint BTS New generation cabinets Convergence Wideband active antenna arrays with any baseband All-in-one: Baseband integrated in radio head Multi-band remote radio head with any baseband Metrocell Macrocell Wireline and Wireless Network Convergence Integration with broadband Small Cells Integration with Optics (WDM, PON) and xdsl RF only sites Conventional BBU IP IP IP CPRI over fiber IP mobile backhaul IP IP Controllers Centralized baseband Processing Optimization Virtualization of applications Standardization on open platforms Supporting multiple technologies and multiple topologies Wireless packet core IP Convergence Consistent IP service quality and management between Wireless and Wireline IP 24

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