Akavipat, Sira
(2016)
Energy Reduction in LTE Access Network Operation and Planning.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
Energy consumption in cellular networks is increasingly a concern, due to the rapid growing demand for mobile communications, the necessity of adding new base stations will continue to grow as well as the amount of energy needed to operate the network. This dissertation presents two algorithms to manage the increasing service demand and create possibilities for energy reduction. The novel cell selection algorithms are bandwidth-based (BB) and energy- aware (EA) cell selection. BB balances traffic between two tiers of a LTE heterogeneous network (HetNet) and offloads traffic from high-powered base stations. EA considers the potential energy requirement to serve users and enables turning off base stations during quiet hours. Also, this thesis shows two energy optimization models to minimize the amount of energy consumption in operating LTE HetNets while maintaining levels of customer satisfaction. First, step-dimming (SD) energy reduction technique reduces the transmission power of high-powered base stations according to the levels of traffic demand. Second, resource-based (RE) energy reduction optimization minimizes the spectrum resources required to achieve user service demand level according to the user channel quality indicator (CQI). Last, this dissertation studies benefits of the proposed algorithms in a minimum CAPEX LTE access network in a sample city-like area with time and spatial varying traffic demand.
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Details
Item Type: |
University of Pittsburgh ETD
|
Status: |
Unpublished |
Creators/Authors: |
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ETD Committee: |
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Date: |
13 January 2016 |
Date Type: |
Publication |
Defense Date: |
17 November 2015 |
Approval Date: |
13 January 2016 |
Submission Date: |
17 December 2015 |
Access Restriction: |
1 year -- Restrict access to University of Pittsburgh for a period of 1 year. |
Number of Pages: |
140 |
Institution: |
University of Pittsburgh |
Schools and Programs: |
School of Information Sciences > Telecommunications |
Degree: |
PhD - Doctor of Philosophy |
Thesis Type: |
Doctoral Dissertation |
Refereed: |
Yes |
Uncontrolled Keywords: |
Energy Reduction, HetNet, LTE, Cell Selection |
Date Deposited: |
13 Jan 2016 16:17 |
Last Modified: |
13 Jan 2017 06:15 |
URI: |
http://d-scholarship.pitt.edu/id/eprint/26692 |
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