Impact of Backhauling Power Consumption on the Deployment of Heterogeneous Mobile Networks

Abstract

Energy efficiency in cellular mobile radio networks has recently gained great interest in the research community. The development of more energy efficient hardware and software components aside, effect of different deployment strategies on energy efficiency are also studied in the literature. The latter mainly consist of optimizing the number and the location of different types of base stations in order to minimize the total power consumption. Usually, in the literature, the total network power consumption is restricted to the sum of the power consumption of all base stations. However, the choice of a specific deployment also affects the exact implementation of the backhaul network, and consequently its power consumption, which should therefore be taken into account when devising energy efficient deployment. In this paper, we propose a new power consumption model for a mobile radio network considering backhaul. We then handle a case study and perform a comparison of the power consumption of three different heterogeneous network deployments, and show how backhaul has a non-negligible impact on total power consumption, which differs for different deployments. An energy efficiency analysis is also carried out for different area throughput targets.

Optimising energy efficiency of non‐orthogonal multiple access for wireless backhaul in heterogeneous cloud radio access network

“…1, the total power consumption in the whole network consists of not only the power consumption of the BSs but also the power consumed by the backhaul [22], [23]. In the following, we discuss about those two power-consumption modellings.…”

“…Let P (BH) k denote the backhauling power of the downlink from CCS to a k-th type BS. Following the same approach as in [22] with the assumption of identical downlink interfaces and switches at the BSs, P (BH) k can be given by…”

Cost- and energy-efficient backhaul options for heterogeneous mobile network deployments

“…For example, it has been shown that the total power consumption of a HetNet deployment to a large degree is affected not only by the presence of the backhaul [2] but also by its specific technological and architectural choices [3]. This means that backhaul networks take a share of the cost and of the energy consumption of mobile networks.…”

“…The key rationale behind a HetNet deployment is to provide user coverage via macro base stations (BSs) and to guarantee high capacity to costumers only where needed via the ad hoc deployment of small cells, i.e., micro, pico, and/or femto BSs. HetNets have a number of advantages, which include reduced energy consumption both in indoor [1] and in outdoor [2] deployments. In fact, small cells consume less power than macro BSs.…”

Energy-Efficient Communication in Large Scale Antenna Systems: Impact of Variable User Capacity and Number of Transmission Antennas

“…The algorithms provided means of determining optimal traffic allocation for 2G/3G networks considering low or high traffic scenarios. Heterogeneous networks settings are also presented in [14], wherein the authors presented a different power consumption model which takes account the back haul power for energy efficiency analysis of different cellular base stations scenarios. The authors in [15] presented a power consumption model to study and compare SISO and MIMO systems for different wireless access networks, as a function of their range,power consumption, and energy efficiency, using suburban area setting.…”