Аннотации:
Deploying small cells in cellular networks, as a technique
for capacity and coverage enhancement, is an indispensable
characteristic of future cellular networks. In this paper, a novel
online decentralized algorithm for enabling energy trading in multitier
cellular networks with selfish energy harvesting capable base
stations (BSs) is proposed. A BS uses the non-renewable energy
when it cannot harvest sufficient energy to serve its connected users.
To minimize the non-renewable energy consumption, we establish
a framework for trading energy such that BSs with energy deficit
are stimulated to compensate their energy shortage with the extra
harvested energy of other BSs. BSs with energy deficit are assigned
to BSs with extra harvested energy by using matching theory. The
extra harvested energy is distributed by the smart grid. Along
with energy trades, BSs gain more profit and their utility functions
enhance. Simulation results show that the waste of energy due
to limited batteries and the non-renewable energy consumption
decreases considerably when the proposed algorithm is applied