Adaptive behaviour of some simple algorithms in LTE-Wifi heterogeneous networks

This paper evaluates the dynamic behaviour of WiFi and LTE heterogeneous network (HetNet), based on computer simulations. The basic modelling abstraction to describe system operation is described along with the necessary numerical parameters. The focus is on admission control and network reselection in HetNets; two simple but practical algorithms are described and their performance in terms of absolute system throughput is shown and compared to an LTE only scenario. Results show that system throughput can be increased if network-controlled admission control is applied against simple user-controlled algorithms. The impact of interfering Access Points is also inspected. It is shown that adaptation is a crucial task while operating in a license-free band.