From heterogeneous wireless networks to sustainable efficient ICT infrastructures: How antenna and propagation simulation tools can help?
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1 From heterogeneous wireless networks to sustainable efficient ICT infrastructures: How antenna and propagation simulation tools can help? Yves Lostanlen SIRADEL April 9 th 2013, Gothenburg, Sweden EUCAP SIRADEL Copyright All rights reserved. 1
2 SIRADEL s Research activities people France, Toronto, Hong-Kong 8 FP6-FP7 EU projects 35+ collaborative projects 100+ research partners EM Wave Exposure Densify & Offload Cellular networks Efficient Wireless Systems 4 main investigation areas Active Antennas MIMO Aim: Developing expertise, methodologies and tools Data: GIS, RF, traffic Software: Volcano, VolcanoLab and Smart City Explorer Consulting: Management & Technology (guidelines) EUCAP SIRADEL Copyright All rights reserved. 2
3 Outline Context Motivation for Hetnet Sustainable? Opportunities! EUCAP SIRADEL Copyright All rights reserved. 3
4 Data traffic: exponential growth EUCAP SIRADEL Copyright All rights reserved. 4
5 Wireless device: Exponential growth People to People People to machines Machines to Machines Internet Internet of Things IoT Cloud Physical Systems Internet of Everything IoE Chris Evans CFO Environment Health Care Energy Yesterday Today Tomorrow Millions Billions Trillions EUCAP SIRADEL Copyright All rights reserved. 5
6 So wireless handsets are everywhere. Data demand is growing. Other constraints? EUCAP SIRADEL Copyright All rights reserved. 6
7 Well Yes. Traffic growth cost 1. Revenue growth constrained Reduce TCO voice data revenue Time 2. Reduce and 3. EMF exposure concerns EUCAP SIRADEL Copyright All rights reserved. 7
8 How shall we cope with this traffic demand, and those constraints? What concepts and tools do we need? EUCAP SIRADEL Copyright All rights reserved. 8
9 Data growth absorption Capacity n W log 2 (1+SINR) TCO TCO TCO TCO Spectrum: Golden frequencies (800MHz) More Macro-BS Small cells outdoor: Metro cells or DAS Small cells indoor: Femto cells Radio Propagation & Antenna tools EUCAP SIRADEL Copyright All rights reserved. 9
10 Spectrum is expensive. Why do wireless carriers compete so fiercely on golden frequencies? EUCAP SIRADEL Copyright All rights reserved. 10
11 Golden frequencies vs. 2.6GHz Macro base station (34m above ground) 800MHz 500m 2.6GHz EUCAP SIRADEL Copyright All rights reserved. 11
12 Outline Context Motivation for Hetnet Sustainable? Opportunities EUCAP SIRADEL Copyright All rights reserved. 12
13 Macros are great for outdoor coverage or for large regions with uniform low demand Traffic demand High Medium Low EUCAP SIRADEL Copyright All rights reserved. 13
14 But demand is not uniform Solutions? Non uniform traffic demand Traffic demand High Medium Low EUCAP SIRADEL Copyright All rights reserved. 14
15 Illumination where it is required EUCAP SIRADEL Copyright All rights reserved. 15
16 Increasing coverage and/or capacity Composition 2-tier coverage Rx power (dbm) EUCAP SIRADEL Copyright All rights reserved. 16
17 Matching demand and best server Densification of the network Best server Small-cell Macro Non uniform traffic demand Traffic demand High Medium Low EUCAP SIRADEL Copyright All rights reserved. 17
18 Data growth absorption More cells New spectrum Mitigate interference Capacity n W log 2 (1+SINR) Radio Propagation & Antenna tools EUCAP SIRADEL Copyright All rights reserved. 18
19 Small cell challenges Site Location Traditional site acquisition: complex and expensive Street furniture: opportunity Optical Fiber / DSL Interference Management Spectrum re-use: same or different spectrum from macro-cells Coordination between macrocells and small cell layer Backhaul Various frequency band options LOS and NLOS in urban areas Enhance flexibility in site location EUCAP SIRADEL Copyright All rights reserved. 19
20 Small cell challenges Site Location Traditional site acquisition: complex and expensive Street furniture: opportunity Optical Fiber / DSL Interference Management Spectrum re-use: same or different spectrum from macro-cells Coordination between macrocells and small cells Metro Backhaul Various frequency band options LOS and NLOS in urban areas Enhance flexibility in site location EUCAP SIRADEL Copyright All rights reserved. 20
21 Once we have the site location, we analyse the antenna patterns in real conditions Images by Telecom Paris-Tech 1.7GHZ 1.9GHZ 2.1GHZ EUCAP SIRADEL Copyright All rights reserved. 21
22 and we can compute the coverage In urban areas, multipath is important EUCAP SIRADEL Copyright All rights reserved. 22
23 3D propagation LOS & strong canyoning EUCAP SIRADEL Copyright All rights reserved. 23
24 And multipath for indoor areas EUCAP SIRADEL Copyright All rights reserved. 24
25 3D Indoor coverage- Ground Floor Reception on ground-floor of a NLOS building EUCAP SIRADEL Copyright All rights reserved. 25
26 3D Indoor coverage Top Floor Reception on top-floor of a NLOS building EUCAP SIRADEL Copyright All rights reserved. 26
27 Multipath estimation refines the MIMO simulation processing (space-time) and is paramount for the interference estimation EUCAP SIRADEL Copyright All rights reserved. 27
28 Small cell challenges Site Location Traditional site acquisition: complex and expensive Street furniture: opportunity Optical Fiber / DSL Interference Management Spectrum re-use: same or different spectrum from macro-cells Coordination between macrocells and small cells Backhaul Various frequency band options LOS and NLOS in urban areas Enhance flexibility in site location EUCAP SIRADEL Copyright All rights reserved. 28
29 Beamforming - «Sub-optimal» Pointing 3D Antenna patterns Antenna models 3D Propagation models Reliable predictions for decision-making Data coverage Data coverage Active Antenna System SC-BS SC-BS UE to serve UE 24dBi Ray-based model EUCAP SIRADEL Copyright All rights reserved. 30
30 Beamforming - Optimal Pointing Less interferences Less power transmitted Less EM radiation in undesired areas Data coverage Active Antenna System SC-BS UE to serve SC-BS UE Ray-based model 24dBi EUCAP SIRADEL Copyright All rights reserved. 31
31 Small cell challenges Site Location Traditional site acquisition: complex and expensive Street furniture: opportunity Optical Fiber / DSL Interference Management Spectrum re-use: same or different spectrum from macro-cells Coordination between macrocells and small cells SC-BS height: 15m 10m 20m 7m Backhaul Various frequency band options LOS and NLOS in urban areas Enhance flexibility in site location EUCAP SIRADEL Copyright All rights reserved. 32
32 Outline Context Motivation for Hetnet Sustainable? Opportunities EUCAP SIRADEL Copyright All rights reserved. 33
33 Great evolution of the networks to cope with the data growth but let s have a more holistic view on what we are doing EUCAP SIRADEL Copyright All rights reserved. 34
34 Human exposure to EM waves Need to better assess the radiation levels Need to anticipate actions to optimize Propagation and antenna tools required Vertical slice of Total field (V/M) Beyond total field threshold on facades EUCAP SIRADEL Copyright All rights reserved. 35
35 Lexnet: EU-FP7 EUCAP SIRADEL Copyright All rights reserved. 36
36 Infrastructure will consume more energy Energy Harvesting Image by CTTC EUCAP SIRADEL Copyright All rights reserved. 37
37 Outline Context Motivation for Hetnet Sustainable? Opportunities! EUCAP SIRADEL Copyright All rights reserved. 38
38 It may be time for a more efficient network EUCAP SIRADEL Copyright All rights reserved. 39
39 ICT: An opportunity to deal with climate changes ICT today: about 2% of global emissions Gtons CO Potential direct telecom equipment energy savings by 2020 Zero Growth Line An Opportunity for Tremendous Impact on Remaining 98% ICT can enable a 16.5% reduction in global emissions by 2020 Indirect application examples Smart utilities Smart transport Smart buildings Smart industry Source: GeSI SMART 2020: Enabling the Low Carbon Economy in the Information Age -7.8 EUCAP SIRADEL Copyright All rights reserved. 40
40 How to get a sustainable infrastructure? Energy Efficiency Greentouch Power limited region Low Power Bandwidth limited region High Power Spectrum Efficiency Throughput maximization Reduction of EM exposure EUCAP SIRADEL Copyright All rights reserved. 41
41 The infrastructure will be sustainable if it is shared among the wireless carriers EUCAP SIRADEL Copyright All rights reserved. 42
42 How to get long-term revenues? Share costs across ICT infrastructure needs Topologies: Reducing energy bills, site and equipment costs Spectrum efficiency: Taking advantage of BW Reduce EM waves: Need not waiting for regulation Anticipating massive device-to-device communications Traffic growth cost Traffic growth data data revenue voice revenue Time voice cost Time EUCAP SIRADEL Copyright All rights reserved. 43
43 System Thinking: Worse before better Work ($) / capability Capability trap Work (or $) / capability Work less on immediate goal Competitive advantage Capability takes time to build t t Capabilities enhancements t Work more on capability t Performance Delay in observation better performance t Worse before better t EUCAP SIRADEL Copyright All rights reserved. 44
44 The infrastructure will be sustainable if it is shared among the various industries EUCAP SIRADEL Copyright All rights reserved. 45
45 Smart Cities Smart Grids More antennas Multi-relays Smart Communities Smart Buildings Opportunity to share Joint optimizations Device-to-device Smart Transportation E-Health Municipalities / governments EUCAP SIRADEL Copyright All rights reserved. 46
46 Opportunities for Antenna & Propagation reliable Tools Idea and Conceptual Design System Engineering Algorithms Software Simulation Tools Hardware Implementation System Integration Hardware Simulators Antenna & Propagation Models Manufacturing System Deployment & Operation RF Planning & Optimization Tools EUCAP SIRADEL Copyright All rights reserved. 47
47 Takeaways Multi-RAT HetNet with small cells: An answer to data growth Mobile network optimization: shift in constraints From Spectral Efficiency to Energy-efficiency and Low EM Exposure While keeping an equivalent User experience Key competitive advantages in the long-run (holistic view) Sustainable infrastructure for Smart Cities: today s decisions Propagation & Antenna models and tools will help EUCAP SIRADEL Copyright All rights reserved. 48
48 Sustainable ICT Infrastructure It is a complicated task! Multi-discipline Multi-carriers Multi-industries But on the long term everyone is better off Traffic growth Lots of learning curves data revenue voice cost Time EUCAP SIRADEL Copyright All rights reserved. 49
49 Thank You! Prof Yves Lostanlen, VP Wireless, CTO Siradel and University of Toronto EUCAP SIRADEL Copyright All rights reserved. 50
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