Network capacity and reliable transmission in ultra-dense networks sharing multiple carriers

Explosive demands for mobile data are leading to fundamental changes in the design of future fifth generation (5G) cellular networks to meet the challenging requirements of higher capacity and improved quality of user experience. To be close to these requirements, advanced technologies have been studied, such as user-centric architectures, massive MIMO, millimeter wave, heterogeneous networking, advanced self-configuration and optimization technologies, etc. This paper is focused on analytical models for performance evaluation of ultra-dense networks. Using the stochastic geometry approach, the SINR distributions and the outage probabilities are derived in circumstance with heterogeneous radio access systems and multiple carrier deployment. Moreover, the network capacity is defined in terms of performance metric of ultra-dense networks. We also show numerical results in various deployment scenarios and discuss them.