Energy Assessment and Optimization In Second Generation Wireless Access Network, The Case of Ethio-Telecom
No Thumbnail Available
Date
2018-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
For the last five years, the main concern of Ethio-telecom was the enhancement of existing wired
and wireless network performance, so that new services being offered could work properly and be
available to a larger number of customers. The solution adopted to achieve this goal has been
advanced following massive improvements in international bandwidth, national fiber backbone
infrastructure and mobile broadband services: as a result, it seems today wired and wireless
networks are constantly working at rates that are hardly reached at rush hours.
Though, this rapid growth of mobile subscribers and number of base stations necessitate the need
to study the relationship between traffic load and power consumption at a base station, research
for more efficient solutions in terms of energy consumption has been disregarded. Thus, to allow
a sizeable saving of economic resources and to realize sustainable development actions in the
telecom industry, reducing the energy needs of the wireless cellular system shall be recognized as
one of the main challenges in the telecommunication sector.
This thesis critically analyses the power consumption of Base Stations as per the traffic generated
at urban-dense location of Addis Ababa City. A power consumption modelling of BSs is developed
with real time traffic and which deals with real time traffic data on full load in per hour basis of
two GSM BSs for two days each. The results revealed a linear relationship between the power
consumption and traffic loads. As of findings, this paper vows an urgency to pursue an optimal
capacity while designing wireless networks and also suggests an imperative pathway for energy
efficient wireless communication.
Moreover, a dynamic management of network’s resources is considered in this paper as a real time
energy saving solution while preserving the Quality of Service (QoS) perceived by users, which
allows switching ON/OFF a timeslot as a function of the instantaneous change of the load in the
system. The proposed real time BS power saving schemes confirmed that Ethio-telecom can save
up to 25% average energy for macro base stations & up to 10% gain for micro BSs by switching
ON/OFF a resource or a timeslot from the BSC.
Description
Keywords
Wireless networks, Cellular System, power consumption model, Dynamic Network Management, 2G energy consumption reduction techniques, switching ON/OFF a resource