An Optimization Method for Multi-Operator and Mixed-Traffic LTE Deployments in the Unlicensed Bands

摘要

The proliferation of multimedia applications and services increased the demand on data and the requirement by operators to improve the experience of their users. This has motivated the extension of cellular technologies, such as Long Term Evolution (LTE) toward using the unlicensed bands. However, the nature of these bands poses a challenge since there is uncontrolled interference from other coexisting transmissions. We discuss in this paper the issue of efficient coexistence of LTE operators in the unlicensed bands through an optimization framework that is based on performance metrics obtained using stochastic geometry. The proposed optimization framework allows for obtaining optimized network topologies that maximize the benefit of LTE operators looking to deploy their networks in the unlicensed bands.