Potential of Network Energy Saving Through Handover in HetNets

Potential of Energy Saving Through Handover in HetNets NameInstitutional AffiliationDate
Introduction
Song Yujae, Kong Peng-Yong & Han Youngman (2016). Potential of Network Energy Saving Through Handover in HetNets. IEEE Transactions On Vehicular Technology, VOL. 65, NO. 12, December 2016.
The authors have identified the problem by stating that despite the fact that the heterogeneous networks (HetNets) deploy small base stations (BSs) together with traditional macro BSs having a lot of advantages, these advantages are outweighed especially when large-scale deployments of small BS's is done. This is because it leads to increase in energy consumption by the HetNets which directly results in increased carbon emissions which lead to global warming. This calls for usage of Energy Efficiency (EE) options in the utilization of HetNets. The BSs consume almost 70 % of the total energy for mobile operators and therefore achieving EE will not only aid in reducing carbon emission s but also increase the profit margin for the investors in mobile telecommunications.
Contribution
The authors have proposed a strategy of minimizing redundant Handovers (HOs) without compromising the mobile terminal’s (MT) quality of service. The strategy considers energy consumption generated at the BSs during the HO execution phase under an expectation on the stochastic behavior of HO parameters in making an HO decision. This approach takes two basic considerations which include the energy consumption during HO execution and the stochastic behavior of the HO parameters. A large-scale small-BS deployment can substantially increase the energy consumption of HetNets
There are some advantages that are associated with the deployment small BSs of Hetnets with the traditional macro BSs. Firstly, the coverage holes are filled as they increase the capacity of the system. Essentially when deploying small BSs in large scale it increases energy consumption by the HetNets. With this increased energy consumption it consequently results to increased emission of carbon which is major component in the global warming. Therefore achieving Energy Efficiency in the HetNets will result to great reductions of carbon emission which will reduce contribution to the global warming resulting to a health environment. Besides, 70% of the energy bill by the majority of these mobile operators is accounted for by the energy utilized by the BSs. Therefore, achieving energy efficiency will also aid the company make more profit through reduced energy bill.
In the deployment of large quantities of small BSs can be effectively done through the minimization of repetitive Hos in the overlapping regions without tampering with the quality of service provision. The strategy that is proposed in the paper considers the amount of energy consumption at BSs when the HO execution is taking place with an expectation of the stochastic behavior of HO which will aid in making HO decision. The basic two properties in this combination are the amount of energy that is consumed during the HO process and the stochastic behavior of the HO parameters. This approach forms a basic principle such that the HO can only take place when the total energy saving in the HO is bigger than the amount of energy ...