DISTRIBUTED WIRELESS COMMUNICATION BASE STATION SYSTEM AND COMMUNICATION METHOD

PROBLEM TO BE SOLVED: To provide a distributed wireless communication base station system capable of reducing the required band between BBU-RRU, and to provide a communication method.SOLUTION: The system bandwidth and the sampling frequency are associated, and the sampling frequency is reduced by reducing the system bandwidth according to the traffic volume between each BBU-RRH, thus reducing the required bandwidth between the optical sections. A distributed wireless communication base station system 301 includes a PON system 130 for connecting one BBU110 with one or a plurality of RRH120, and performing RoF transmission between the BBU110 and RRH120 with an optical signal, a system bandwidth control unit for determining the system bandwidth according to the traffic volume between the BBU and RRH, and a RoF transmission unit for transmitting and receiving the optical signal by sampling the transmission signal at a sampling frequency determined with a system bandwidth determined in the system bandwidth control unit. 【課題】ＢＢＵ−ＲＲＵ間の所要帯域を低減できる分散型無線通信基地局システム及び通信方法を提供する。【解決手段】システム帯域幅とサンプリング周波数とを関連付けておき、各ＢＢＵ−ＲＲＨ間の無線トラヒック量に応じてシステム帯域幅を低減することにより、サンプリング周波数を低減して、光区間の所要帯域を削減する。分散型無線通信基地局システム３０１は、１つのＢＢＵ１１０と１つ又は複数のＲＲＨ１２０とを接続し、ＢＢＵ１１０とＲＲＨ１２０との間を光信号でＲｏＦ伝送するＰＯＮシステム１３０と、ＢＢＵとＲＲＨとの間のトラヒック量に応じてシステム帯域幅を決定するシステム帯域幅制御部と、前記システム帯域幅制御部が決定したシステム帯域幅で決定されるサンプリング周波数で伝送信号をサンプリングして前記光信号を送受信するＲｏＦ伝送部と、を備える。【選択図】図８