  LTE-Unlicensed (LTE-U) has recently attracted worldwide interest to meet the
explosion in cellular traffic data. By using carrier aggregation (CA), licensed
and unlicensed bands are integrated to enhance transmission capacity while
maintaining reliable and predictable performance. As there may exist other
conventional unlicensed band users, such as Wi-Fi users, LTE-U users have to
share the same unlicensed bands with them. Thus, an optimized resource
allocation scheme to ensure the fairness between LTE-U users and conventional
unlicensed band users is critical for the deployment of LTE-U networks. In this
paper, we investigate an energy efficient resource allocation problem in LTE-U
coexisting with other wireless networks, which aims at guaranteeing fairness
among the users of different radio access networks (RANs). We formulate the
problem as a multi-objective optimization problem and propose a
semi-distributed matching framework with a partial information-based algorithm
to solve it. We demonstrate our contributions with simulations in which various
network densities and traffic load levels are considered.
