Green telecommunication with Heterogonous Networks: A survey

The continuous increase in traffic demand has leaded to a high increase in power consumption and CO2 emission. Green telecommunications are aiming to develop mechanisms that will allow reduction of OPEX and better energy efficiency without compromising end user perceived quality. Low Power Nodes such as micro cells, picocells and Femto cells, thanks to their low cost and easy deployment, are now very attractive to achieve green telecommunications goals. This article discusses the need for co-existence of Low Power nodes underlaid by High Power nodes in an LTE Radio network leading to what is referred to be Heterogonous Networks. This is to cope with capacity increase need and ensure better energy efficiency. After presenting an overview of both Heterogonous networks and Green telecommunication concept, we will survey statement of art in terms of developed mechanisms to optimize power consumption will be overcome. A set of mechanisms related to i/ Interference management and ii/Power management will be discussed.