Han-Shin Jo

TL;DR: A tractable framework for SINR analysis in downlink heterogeneous cellular networks (HCNs) with flexible cell association policies is developed and the average ergodic rate of the typical user, and the minimum average users throughput - the smallest value among the average user throughputs supported by one cell in each tier is derived.

TL;DR: New theoretical models for understanding the heterogeneous cellular networks of tomorrow are discussed, and the practical constraints and challenges that operators must tackle in order for these networks to reach their potential are discussed.

TL;DR: Simulation results show that both schemes effectively compensate the uplink throughput degradation of the macrocell BS due to the cross-tier interference and that the closed- loop control provides better femtocell throughput than the open-loop control at a minimal cost of macrocell throughput.

TL;DR: This paper proposes a self-optimized coverage coordination scheme for two-tier femtocell networks, in which a fem tocell base station adjusts the transmit power based on the statistics of the signal and the interference power that is measured at a Femtocell downlink.

TL;DR: A middle way is proposed which femtocells allocate an adjustable number of time-slots between home and cellular users such that a specified minimum rate for each can be achieved, and analysis shows that shared access achieves at least the overall throughput of open access while also satisfying rate requirements.