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Making LTE Greener & Energy-Efficient to Enable Cost-Reduction in the Network
 

Making LTE Greener & Energy-Efficient to Enable Cost-Reduction in the Network

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Making LTE Greener & Energy-Efficient to Enable Cost-Reduction in the Network...

Making LTE Greener & Energy-Efficient to Enable Cost-Reduction in the Network

Presented by: Dr. Alex Vukovic, Vice-President
Communications Research Centre, Industry Canada, CANADA

In The 7thLTE World Summit, Amsterdam, May 17, 2011

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    Making LTE Greener & Energy-Efficient to Enable Cost-Reduction in the Network Making LTE Greener & Energy-Efficient to Enable Cost-Reduction in the Network Presentation Transcript

    • Making LTE Greener & Energy-Efficientto Enable Cost-Reduction in the Network Dr. Alex Vukovic, Vice-President Communications Research Centre, Industry Canada, CANADA The 7th LTE World Summit, Amsterdam May 17, 2011
    • Table of Content LTE Network Cost Model Cost Reduction Options in LTE Network Renewable Energy Resources Green Initiatives and Cost-Reduction Strategies Challenges of Green and Energy-Efficient LTE Network 2
    • LTE Network Cost Model OPEX ($) CAPEX ($) OPEX ($) = 6 According to Service Providers OPEX / CAPAEX = 4 to 10 CAPEX ($)Capital Expenditure (CAPEX):- BTS equipment cost Spectrum charges- S/W cost Network OA&M 7%- New tower build-out (greenfield) 27% Customer care- Installation & commissioning (greenfield) 10%Operational Expenditure (OPEX):- Marketing and sales 22%- Customer care Energy- Network OA&M 34%- Utilities Marketing & Sales- Spectrum charges 3
    • Table of Content LTE Network Cost Model Cost Reduction Options in LTE Network  Network Intelligence & Coverage Optimization  Network Systems Configuration  Traffic Shaping  Connectivity on Demand Renewable Energy Resources Green Initiatives and Cost-Reduction Strategies Challenges of Green and Energy-Efficient LTE Network 4
    • Coverage Optimization Cellular networks tend to be density limited rather than coveragelimited (co-channel interference limitation) If predictable trends show low traffic demand periods, temporarilyoperate with less cells having greater coverage Femtocells address wireless access capacity glut; On demand usage model Femtocell Low traffic Technology 5 5
    • Night Time Sleep Mode1:00 AM to 6:00 AM 6 6
    • Network Systems ConfigurationOptions for reduced energy consumption:- Minimization of the number of base station sites using intelligent network planning for full coverage; Use of Femtocells inside buildings (reduce capacity demand)- Use of MIMO techniques to increase system efficiency or transmission distances larger than a given threshold; Smart antennas- All network elements need to be self–aware self- configurable, able to perform self–diagnosis and perform auto-optimization for particular cell size- Building intelligent network that can automatically extend, change, configure and optimize the network coverage, capacity including- Optimization of data routing minimizing overhead and administrative traffic flow- Dynamic software setting to idle or partial shutdown carriers set modes during low-traffic periods- Optimization: Multi-hop vs. single hop for backhaul systems 7
    • Potential Solution: Micro-cell Environment with Remote RF Head Remote RF head Micro-cell coverage area 8
    • Traffic Shaping with Network-to-User Feedback  Network updates with improved display of the network status Feedback from user (user-to-network) ensures the picture of call quality map is accurate.  User take actions according to info received from base station. For instance, user can move from current present location to a location where traffic is less congested. 9
    • Connectivity on Demand (Public safety and security) Portable Rapidly Deployable Disaster zone Base Station (PRD BS) (2km) Vehicle with PRD BS provides wireless connectivity to disaster areas Accident Wireless site transponder TrainPersonnel on the tracksground carry WPD A police car acts as PRD BS 10
    • Table of Content LTE Network Cost Model Cost Reduction Options in LTE Network  Network Intelligence & Coverage Optimization  Network Systems Configuration  Traffic Shaping  Connectivity on Demand Renewable Energy Resources Green Initiatives and Cost-Reduction Strategies Challenges of Green and Energy-Efficient LTE Network 11
    • Alternative Energy for LTE NetworkViable solution for wireless communications?- Yes, it is already in many parts of the world out ofnecessity rather than convenience! - Remote eNodeB sites - Rural areas with no existing grid power, limited gas/diesel availability - Developing countries- Stand alone photovoltaic (solar) and windturbines have been used for many years toprovide primary power to key sites such as basestations and backhaul sites in wireless networks- Very high reliability, primary sources of powerwhen coupled with appropriate rechargeablebattery storage autonomy 12
    • Alternative Energy for LTE Network Many examples of stand alone photovoltaic and/or hybrid power systems in Africa, Middle East, South AmericaHigh CAPEX, but cost recoverywithin 5-15 years (even withbattery replacement) 13
    • Table of Content LTE Network Cost Model Cost Reduction Options in LTE Network  Network Intelligence & Coverage Optimization  Network Systems Configuration  Traffic Shaping  Connectivity on Demand Renewable Energy Resources Green Initiatives and Cost-Reduction Strategies Challenges of Green and Energy-Efficient LTE Network 14
    • Green Initiatives & Cost Reduction Strategies for LTE Network Renewable Energy - Energy Network Systems Network Intelligence - Network OA&M Configuration - Marketing & Sales - Energy - Energy - Customer care - Marketing & Sales - Network OA&M Spectrum charges - Network OA&M Network OA&M 7% 27% Customer care Connectivity on 10% Traffic Shaping Demand - Energy - Customer care- Energy 22% - Network OA&M- Customer care Energy- Network OA&M 34% Marketing & Sales Optimization of Network & Deployment Planning & Operation - Network OA&M - Energy - Marketing & Sales - Customer care - Network OA&M 15
    • Table of Content LTE Network Cost Model Cost Reduction Options in LTE Network  Network Intelligence & Coverage Optimization  Network Systems Configuration  Traffic Shaping  Connectivity on Demand Renewable Energy Resources Green Initiatives and Cost-Reduction Strategies Challenges of Green and Energy-Efficient LTE Network 16
    • Challenges towards Green & Cost Efficient LTE Network• Evolution from “economy vs. environment” to “economy for environment” – addressing climate change• Carriers operate at low margin; Incentives for Carriers?• Explosion of wireless connections / subscribers / devices (exponential data growth by 2020 – M2M, P2M, P2P)• Global Policies & Collaborative Alliances for eco-friendly communications Thank you! 17