  This paper proposes a novel framework for PV-powered cellular networks with a
standby grid supply and an essential energy management technique for achieving
envisaged green networks. The proposal considers an emerging cellular network
architecture employing two types of coordinated multipoint (CoMP) transmission
techniques for serving the subscribers. Under the proposed framework, each base
station (BS) is powered by an individual PV solar energy module having an
independent storage device. BSs are also connected to the conventional grid
supply for meeting additional energy demand. We also propose a dynamic inter-BS
solar energy sharing policy through a transmission line for further greening
the proposed network by minimizing the consumption from the grid supply. An
extensive simulation-based study in the downlink of a Long-Term Evolution (LTE)
cellular system is carried out for evaluating the energy efficiency performance
of the proposed framework. System performance is also investigated for
identifying the impact of various system parameters including storage factor,
storage capacity, solar generation capacity, transmission line loss, and
different CoMP techniques.
