One of the most critical challenges with the establishment of HetNet is interference, since the creation of more cells implies that more cell edge users are prone to inter-cell interference (ICI) from neighboring cells. One way to reduce ICI is by changing the base-station antenna array characteristics (beamwidth, beampointing direction, beamshape etc). Some of our preliminary results have demonstrated the potential of this technique. Moreover, physically separated APs can cooperate during transmission/reception to/from user devices.
On this basis, coordinated user scheduling for prioritizing the users at the cell edge, emerges as an efficient technique. By doing so, a significant increase in the edge users’ rates and spectral efficiency can be achieved with a marginal loss in the rate of the interior-cell users.
The key objectives of this track are to devise novel, low-complexity algorithms for interference mitigation in HetNet and for coordinated transmission/reception between different BSs, taking wireless backhaul constraints into account.
This project is part of the MATWAB project within Chase.