Location-Fair Based mmWave Stable Beamforming Scheme for High Speed Railway.

In this paper, a location-fair based mmWave stable beamforming scheme under interlaced redundant coverage architecture is proposed to improve the stability and reliability of high speed railway communications. In the proposed scheme, an adaptive searching algorithm is presented to calculate the transmitting (TX) beamwidth and positions for beam switching. Thus, optimal TX beams with different beamwidth are formed by base station to balance the data rate. Theoretical analysis and simulations are conducted to verify the improved stability and reliability performance.