RADIO COMMUNICATION SYSTEM, BASE TRANSCEIVER STATION, AND EXTENSION DEVICE

• Main Authors: KUNIYOSHI HIDEKAZU, HASHIMOTO MASANORI, MIYAZAKI NAO, KANDA TAKASHI, MARUYAMA SATOSHI, YOKOSAWA TADANORI, TEZUKA YASUO, MOTOHASHI KAYO
• Format: Patent
• Language: English
• Published: 05.10.2007
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

A radio communication system, a base transceiver station, and an extension device are provided to reduce communication costs by effectively usage resources of radio communication units, and to install the extension devices in an area in which optical cables cannot be laid by connecting an IP network by existing metal wires, thereby to allow operation to be performed at a low cost. A radio communication system comprises a plurality of base transceiver stations(103) and a plurality of base transceiver stations(103). The plurality of base transceiver stations(103) and at least one extension device(106) are connected via an IP network(100) that uses the IP. The extension device(106) shares resources of the base transceiver stations(103) by arbitrarily changing a connection relationship between the base transceiver stations(103) and the extension device(106). When a mobile terminal communicates with a core network(101), the extension device(106) uses the resources of one or more of the base transceiver stations(103) by fluctuation in the amount of traffic.