Interference Avoidance with Dynamic Vertical Beamsteering in Realistic Deployments

This paper gives an overview on the possibilities and potential of dynamic vertical beamsteering in a cellular mobile radio system with focus on the interference limited macro-cell scenario. Different realization options for terminal specific downtilt adaptation at the eNB are introduced and simulated performance figures are given. Beam coordination methods for interference avoidance without and with the requirement for inter-eNB communications are considered. The impact of the most important system parameters like vertical HPBW, downtilt angle variation and coordination mechanism is investigated. First basic measurements in real environment for proof of concept are introduced and their relation to simulation results are discussed. Finally the major conclusions and an outlook for future investigations is given.