Green cellular networks a survey some research issues and challenges
Sponsored Links
This presentation is the property of its rightful owner.
1 / 11

Green Cellular Networks: A Survey, Some Research Issues and Challenges PowerPoint PPT Presentation


  • 68 Views
  • Uploaded on
  • Presentation posted in: General

Green Cellular Networks: A Survey, Some Research Issues and Challenges. Nourah Alhassoun February 29, 2012. Part I. Objectiv e : A brief survey of methods to improve the power efficiency of cellular networks and explore some research issues and challenges

Download Presentation

Green Cellular Networks: A Survey, Some Research Issues and Challenges

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Green Cellular Networks: A Survey, Some Research Issues and Challenges

Nourah Alhassoun

February 29, 2012


Part I

Objective:

  • A brief survey of methods to improve the power efficiency of cellular networks and explore some research issues and challenges

  • Suggest some techniques to enable an energy efficient or green cellular network

    Results:

  • A survey on methods to obtain energy savings in base stations such as architectural changes in base stations and heterogeneous network deployment

  • Propose a research vision by using some techniques(cognitive radio and cooperative relaying technologies) to make energy more efficient


Part II

Important Aspects of a Green Networking:

I. Defining Green Metrics

II. Architecture Changes in Base Stations

III. Network Planning

IV. Addressing Energy Efficiency in Future Generation Wireless Systems

V. Some Broader Perspectives


I. Measuring Greenness

Energy Efficiency Metrics:

  • Facility-level: High-level systems where equipment is deployed

  • Equipment-level: Evaluate performance of an individual equipment

  • Network-level: Assess the performance of equipment with the consideration of features and properties


II. Architecture: Energy Saving in Base Stations

  • Minimizing BS Energy Consumption

    • Improvements in Power Amplifier: Switch mode PA

    • Power Saving Protocols: Sleep Mode

  • Energy Aware Cooperative BS Power Management

    • Cell Zooming: BS can adjust its size according to network or traffic situation

  • Renewable Energy Resources

    • Solar and Wind Energy instead of off-grid sites


III. Network Planning

Heterogeneous Network Deployment:

Based on smaller cells such as micro, pico and femtocells

  • Advantages:

    • Energy consumption of the network can be reduced up to 60% compared to a network with macro-cells only

    • Smaller cells use higher frequency bands to provide high data rates

  • Draw Backs:

    • The efficiency of macro-cell Base Station might be reduced


Part IIIIV. Addressing Energy Efficiency in Future Generation Wireless Systems

Enabling Technologies:

  • Green Communication via Cognitive Radio:

    • Purpose: Collect information on the spectrum usage and access the unused frequency bands

    • Manage the spectrum optimally and dynamically

  • Green Communication delivered by Cooperative Relays:

    • Purpose: Improvement in throughput and coverage

    • Provide service to more users using less power


IV. Addressing Energy Efficiency in Future Generation Wireless Systems

  • Low Energy Spectrum Sensing

    • Cognitive Radio: design low complex cyclostationary detectors instead of energy detectors

  • Energy Efficient Resource Management with Applications in Heterogeneous Networks

    • Relay placement, optimal relay selection criterion

  • Addressing Uncertainty Issues

    • Cognitive Radio: did not take into account the effect of imperfect sensing

    • Cooperative Relays: optimal relays with perfect CSI


VI. Some Broader Perspective

Ideas to achieve energy efficient cellular network:

  • Statistical Power Profiles:

    Dynamic algorithms can be designed to switch BS to different power profile appropriate for that time of the day

  • Smart Grid Technology:

    Adding measurement sensors which can update the status of BSs then transmit them to other BSs and smart grid control system

  • Embodied Energy:

    Reducing the number of BS since embodied energy accounts for a significant proportion of energy consumed by the BS


Energy Saving Obtained by Some of the Discussed Techniques


Reference

Hasan, Z. Boostanimehr, H. 2011. “Green Cellular Networks: A survey, some research issues and challenges”. IEEE Communications Survey & Tutorials. V13,2,4.


  • Login