Compared to the previous generations of mobile networks, 5G will provide a significant
paradigm shift by including beyond state of the art technical solutions, like very high carrier …

For two-tier networks consisting of macrocells and femtocells, the channel access
mechanism can be configured to be open access, closed access, or hybrid access. Hybrid …

Open access is an efficient approach to reduce cross-tier interference in femtocell networks.
In this paper, we study resource allocation in open access OFDMA femtocell networks to …

A fundamental choice in femtocell deployments is the set of users which are allowed to
access each femtocell. Closed access restricts the set to specifically registered users, while …

In this paper, we provide a survey on abstraction models for evaluating aggregate
interference statistics in urban heterogeneous cellular networks. The two principal …

Rapid increase in number of cellular users and high demand for data has lead to the
formation of multi-tier networks. Non-orthogonal multiple access (NOMA) has proved to be …

We study joint spectrum allocation and user association in heterogeneous cellular networks
with multiple tiers of base stations. A stochastic geometric approach is applied as the basis …

Ultra-dense network (UDN) is a promising technology for future wireless networks to meet
the explosively increasing wireless traffic demands. Sleeping strategy that switches base …

Intercell interference is one of the most challenging issues in femtocell deployment under
the coverage of existing macrocell. Allocation of resources between femtocell and macrocell …

For the past few years, 5G heterogeneous networks (HetNets) have gain phenomenal
attention in the wireless industry. In this paper, we propose a hierarchical game theoretical …