Relaying operation between base stations using white spaces in wireless access system

摘要

Disclosed is a wireless communication system using white spaces and a base station that does not have its own backhaul, starts wireless communications without radiating radio waves of frequencies causing interference with primary users. A BS being in isolation starts a wireless communication with a CPE, connected to the internet, so as to access a database to acquire a list of frequencies available for transmission. The BS uses a predetermined frequency to perform the wireless communication with the CPE, and acquires, via this wireless communication, the list of frequencies available for transmission. Thereafter, the BS performs wireless communications with the CPE and with another CPE on the basis of the acquired list of frequencies available for transmission. The BS can hold, in advance, information of the predetermined frequency for which it has been estimated that the BS will cause no interference with the wireless communications of the primary users.

主权项

1. A wireless communication system configured to perform a relay operation by using white spaces in a wireless access system, the wireless communication system comprising:
a first base station accessing a management apparatus managing information of a white space, without accessing wireless communication with a terminal station within a cell of the first base station; a second base station accessing the management apparatus, by accessing the wireless communication with the terminal station within the cell of the second base station; and a relay station that relays communication between the first base station and the second base station, wherein the first base station and the second base station operate under a synchronized frame timing using a same TDD wireless access system, wherein the relay station is configured to connect a first terminal station within the cell of the first base station, and a second terminal station within the cell of the second base station, by a wire line, wherein the second base station, in order to acquire the information of the white space that is available in the second base station, communicates with the second terminal station by using the predetermined frequency, and wherein the second base station, after acquiring the information of the white space that is available in the second base station, performs radio communications with the second terminal station and another terminal station within the cell of the second base station by using the white space.