Addis Ababa Institute of Technology

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Browsing Addis Ababa Institute of Technology by Subject "2G energy consumption reduction techniques"

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    Energy Assessment and Optimization In Second Generation Wireless Access Network, The Case of Ethio-Telecom
    (Addis Ababa University, 2018-12) Belete, Teshale; Dereje, Hailemariam (PhD)
    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.