Distributed antenna systems, distributed antenna switching method, base station apparatus and antenna switch device

摘要

In a distributed antenna system in which plural antennas are dispersed spatially, a base station apparatus 102 collects the terminal throughput of the uplink and downlink communication, the number of simultaneous communication terminals, and the information on a radio propagation channel from a distributed antenna to a terminal antenna, and estimates the throughput in each communication mode from the number of simultaneous communication terminals and the radio propagation channel information, selects a communication mode by comparing the estimated throughput with a request value, connects the distributed antenna and the base station apparatus 102 in an antenna connection pattern in the selected communication mode, and switches the communication mode between the base station device and the terminal to continue the communication, when the terminal throughput is below the request value, or above the request value plus a certain threshold value.