Energy Saving Scheme for Multicarrier HSPA + Under Realistic Traffic Fluctuation

In the near future, an increase in cellular network density is expected to be one of the main enablers to boost the system capacity. This development will lead to an increase in the network energy consumption. In this context, we propose an energy efficient dynamic scheme for HSDPA + (High Speed Dow...

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Bibliographic Details
Published in:Mobile networks and applications 2016-04, Vol.21 (2), p.247-258
Main Authors: Jada, Maliha U., García-Lozano, Mario, Hämäläinen, Jyri
Format: Article
Language:English
Subjects:
Analysis
Bandwidths
Carrier management
Carriers
Cell phone systems
Cell switch off
Communications Engineering
Computer Communication Networks
Comunicacions mòbils
Consum
Dynamical systems
Dynamics
Electrical Engineering
Energia
Energy conservation
Energy consumption
Energy efficiency
Energy management
Energy saving
Engineering
Enginyeria de la telecomunicació
IT in Business
Multicarrier HSPA
Networks
Radiocomunicació i exploració electromagnètica
Studies
Switching theory
Telefonia mòbil
Traffic engineering
Traffic flow
Wireless networks
Àrees temàtiques de la UPC
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Summary:In the near future, an increase in cellular network density is expected to be one of the main enablers to boost the system capacity. This development will lead to an increase in the network energy consumption. In this context, we propose an energy efficient dynamic scheme for HSDPA + (High Speed Downlink Packet Access-Advanced) systems aggregating several carriers and which adapts dynamically to the network traffic. The scheme evaluates whether node-B deactivation is feasible without compromising the user flow throughput. Furthermore, instead of progressive de-activation of carriers and/or node-B switch-off, we evaluate the approach where feasible combination of inter-site distance and number of carriers is searched to obtain best savings. This is done by also considering the effect of transition delays between network configuration changes. The solution exploits the fact that re-activation of carriers might permit turning off other BSs earlier at relatively higher load than existing policies. Remote electrical downtilt is also considered as a means to maximize the utilization of higher modulation and coding schemes in the extended cells. This approach promises significant energy savings when compared with existing policies - not only for low traffic hours but also for medium load scenarios.
ISSN:1383-469X
1572-8153
DOI:10.1007/s11036-015-0656-6