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Energy Effcient Design and Bandwidth Assignment in Wireless Access Networks
KTH, School of Information and Communication Technology (ICT).
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In recent years, traffic demands and quality of service requirements in cellular networks is increasing rapidly. Network operators deploymore number of base stations or increase the transmission power of the existing deployment in order to satisfy this user demand. This increases theenergy consumption and operational cost of cellular networks as well as the capital expenditures. Energy efficient design of cellular networks is a promising strategy to reduce energy consumption. Proper utilization of spectrum, high spectral efficiency and application of interference mitigation approaches provides more capacity in wireless access. Traditional bandwidth allocationschemes are intended to maximize the throughput of the system and increase the quality of service. Different resource allocation methods have been proposed as a solution for energy efficient resource management in wireless access networks. We investigate the efficiency of different resource allocation methods and the effect of excess capacity for reducing the total power consumption.

In this thesis we intend to analyze the impact of excess capacity on reducing energy consumption in the network. Performance of different bandwidth allocation schemes is studied in order to reduce power consumption as much as possible. Three different resource allocation schemes have been studied depending on the way they distribute available resourcesblocks(RBs) to users. The first scheme is equal bandwidth allocation where users are assigned resources equally in a round robin manner. The second scheme is proportional bandwidth allocation scheme with residuals. This scheme assigns the whole resources considering the quality of service of users. The third one is proportional resource allocation without residuals. Here resources are allocated until every user meets the required quality of service and then leaves the residual resources.

Place, publisher, year, edition, pages
2015. , 22 p.
Series
TRITA-ICT-EX
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-209125OAI: oai:DiVA.org:kth-209125DiVA: diva2:1110070
Subject / course
Communications Systems
Educational program
Master of Science - School of Electrical Engineering (EES) - Master of Science - Research on Information and Communication Technologies
Examiners
Available from: 2017-06-15 Created: 2017-06-15 Last updated: 2017-06-15Bibliographically approved

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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