Performance Evaluation of LTE Advanced System with CoMP DPS under Hotspot Scenarios

Number of mobile devices are increasing and traffic demand of using mobile data services has been growing extremely with the trend of this generation. To improve system performance to support increasing demand in the future networks, 5G mobile communication systems based on LTE Advanced (LTE-A) technology were introduced. Users’ experienced throughput has been one of the important goals in 5G systems that can be achievable by improving the cell edge performance. Coordinated Multipoint (CoMP) was considered for managing inter-cell interference at cell-edge in particular a Dynamic Point Selection (DPS), a mechanism to provide cell load balancing and interference mitigation in the Network. In DPS, Transmission Point (TP) of User Equipment (UE) will be switched dynamically among the cooperating set of TPs. Several DPS mechanisms have been proposed to date, however the performance of DPS in hotspot scenarios has not been studied. In this paper, the LTE-A system performance based on the implementation of DPS with different CoMP clustering patterns under hotspot scenarios is evaluated. The system level simulation has been used with non-full buffered video streaming traffic model for realistic scenarios. The simulation results show the system performance in terms of the peak throughput, the average throughput and the cell-edge throughput of the system with the CoMP DPS implementation. Finally, the DPS performance gains obtained in such scenarios are presented.