| 摘要 |
PURPOSE:To avoid interference in a feeding system between a main base station and plural base stations by devising the system such that communication using a light wave through an optical fiber cable is implemented between the main base station and each base station and radio wave communication is implemented between each base station and terminal stations. CONSTITUTION:The communication utilizing an optical signal through an optical fiber cable 3 is implemented between a main base station 1 and plural base stations 2A, 2B, 2C - 2X, and a radio signal is used for the communication between each base station such as 2A and individual terminal equipments (personal mobile radio equipments) 4A, 4B, 4C.... That is, when the communication is implemented between the main base station 1 and the terminal stations 4a - 4c, the base stations 2A - 2X covering the terminal stations 4a - 4c are used as relay stations and the communication is implemented between the relay stations and the terminal stations 4a - 4c by using a radio wave. Further, the communication between the relay stations and the main base station 1 is implemented by using frequency conversion means 22, 28 and a light wave via the optical fiber cable 3 interconnected among the stations. Thus, a radio wave is used effectively and the interference in the feeding system is avoided. |
