Method and apparatus for channel mapping and detecting base station and user equipment

A channel detecting method in a user equipment for a time division duplex (TDD) mode, comprising:

• scanning a received frame of uplink-downlink configuration for the TDD mode at a predetermined bandwidth until a first broadcast channel is detected at a specific carrier frequency;
• and
• scanning a next frame of the received frame at the specific carrier frequency, wherein
• in a case where a second broadcast channel is detected in the next frame, the specific carrier frequency is a first carrier frequency, and the next frame is scanned at the first carrier frequency to detect a third broadcast channel;
• in a case where the second broadcast channel is not detected in the next frame, the specific carrier frequency is a second carrier frequency, the next frame is scanned at the first carrier frequency to detect the second broadcast channel, and the next frame is scanned at the first carrier frequency to detect the third broadcast channel.

A channel detecting apparatus for a time division duplex (TDD) mode, comprising:

• a receiving unit configured to receive a signal frame of uplink-downlink configuration for the TDD mode;
• and
• a channel detecting unit configured to scan a received frame of uplink-downlink configuration for the TDD mode at a predetermined bandwidth until a first broadcast channel is detected at a specific carrier frequency, and scan a next frame of the received frame at the specific carrier frequency, wherein
• in a case where a second broadcast channel is detected in the next frame, the specific carrier frequency is a first carrier frequency, and the next frame is scanned at the first carrier frequency to detect a third broadcast channel;
• in a case where the second broadcast channel is not detected in the next frame, the specific carrier frequency is a second carrier frequency, the next frame is scanned at the first carrier frequency to detect the second broadcast channel, and the next frame is scanned at the first carrier frequency to detect the third broadcast channel.