摘要 |
A small base station may report to a network controller about whether a radio frequency (RF) signal transmitted from a macro base station is sensed. The network controller may control an operational mode of the small base station depending on whether the RF signal is sensed. Accordingly, the small base station may not transmit the RF signal at all times, and thus, it is possible to reduce an interference between a small cell and a macro cell or interference between the small cell and another small cell.
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