| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a distributed antenna system for selecting an optimum communication mode according to throughput. <P>SOLUTION: A distributed antenna system in which a plurality of antennas are distributed and arranged in a space, collects, in a base station device 102, terminal throughput of uplink and downlink communication, the number of simultaneously communicating terminals, and radio propagation channel information from the distributed antenna to a terminal antenna; estimating throughput of each communication mode from the number of the simultaneously communicating terminals and the radio propagation channel information, when the terminal throughput is lower than a requested value or higher than a value that is sum of the requested value and a predetermined fixed threshold; selecting a communication mode by comparing the estimated throughput and the requested value; connecting the distributed antenna and the base station device 102 according to an antenna connection pattern of the selected communication mode; and switching the communication mode between the base station device and the terminal to continue the communication. <P>COPYRIGHT: (C)2012,JPO&INPIT |
