GPS - Pseudo-Random Beam-forming Method using GPS Time-Synchronization in Mobile Networks

摘要

In the time-synchronized base station according to the present invention, a beamforming method includes: transmitting a reference signal for channel estimation between a base station and a terminal; Generating a transmit beamforming matrix candidate for generating a plurality of pseudo-random transmit beamforming matrix candidates at the base station; A reception beamforming vector generation step of generating a plurality of reception beamforming vectors corresponding to the plurality of pseudo-random transmit beamforming matrix candidates in the terminal; A feedback step of feeding back reference numbers and valid SINR values for a plurality of transmit beamforming vectors constituting the plurality of pseudo-random transmit beamforming matrix candidates to the base station in the terminal; And selecting an optimal beamforming matrix from among the plurality of pseudo-random beamforming matrix candidates in the network management base station that collects feedback information of the base stations in a system in which a network management base station controlling each base station of a multiple cell exists. The present invention provides a pseudo-random beamforming method for a mobile base station including a beamforming matrix selection step, and capable of maintaining almost a data rate even when only a part of feedback is fed back.