The design of environmentally friendly networks using coordinated multi-point (comp) transmission

Recent global concerns about greenhouse gas necessitate new approach to every element of information and communication technology. Therefore, considering a greenness as another constraint in base-station planning problem is required. There exists a large body of work on network design and base-station planning, but these have not taken greenness into account. Shin et al. (2013), the authors solved the problem of energy-efficient base-station planning in a simple one-dimensional cellular network. They introduced an iterative algorithm that finds the number of base-stations and the base-station positions and in terms of maximizing energy efficiency. In this paper, we extend the previous algorithm to a cellular network using coordinated multi-point (CoMP) transmission schemes. More specifically, a new iterative algorithm based on two types of CoMP schemes (joint processing and coordinated beamforming) is proposed under the system model, where each iteration consists of an assignment step and a positioning step. Similarly as in Shin et al. (2013) and Chen et al. (2010); we use the energy-normalized throughput as greenness measure, defined as the ratio of the sum-rate to the total energy consumption.