BASE STATION DEVICE AND COMMUNICATION METHOD THEREOF

PROBLEM TO BE SOLVED: To narrow the width of a guard band while reducing interference between adjacent frequency bands, and thereby improve frequency utilization efficiency.SOLUTION: A base station device 11 includes: a sub radio receiving unit 102 for receiving signals from other base stations in a system using adjacent frequency bands; a center frequency search unit 103 for searching for center frequencies of the signals from the other base stations; a base station selection unit 104 for selecting a synchronization object base station from base stations of which the center frequencies were found; a sub reception signal processing unit 105 for obtaining reception information from a downlink signal transmitted by the synchronization object base station; and a control unit 106 for setting an operation parameter so as to synchronize with transmission and reception timing of the synchronization object base station on the basis of the reception information from the synchronization object base station.SELECTED DRAWING: Figure 2 【課題】隣接周波数帯域間の干渉を抑えつつ、ガードバンドの幅を狭くして、周波数利用効率の向上を図ること。【解決手段】基地局装置１１は、隣接周波数帯域を使用するシステムの他の基地局からの信号を受信するサブ無線受信部１０２と、他の基地局からの信号の中心周波数を探索する中心周波数サーチ部１０３と、中心周波数を取得できた基地局の中から同期対象基地局を選択する基地局選択部１０４と、同期対象基地局から送信された下り信号から受信情報を取得するサブ受信信号処理部１０５と、同期対象基地局の受信情報に基づいて同期対象基地局の送受信タイミングに同期するように動作パラメータを設定する制御部１０６と、を具備する。【選択図】図２