Method, system, relay station and base station for transmitting data mobile communication

A system for transmitting data in mobile communication, comprising:

• a base station;
• and
• a plurality of relay stations in a cell of the base station, wherein under the control of said base station, at least one of said plurality of relay stations switches between at least two operating modes when transmitting a downlink signaling,
• wherein said at least two operating modes comprise an operating mode of not participating in the transmission of the downlink signaling and an operating mode of jointly transmitting the downlink signaling with the base station, and
• wherein when said at least one relay station is in the operating mode of jointly transmitting the downlink signaling with the base station,
• said at least one relay station receives a downlink signaling pre-transmitted by the base station before a transmission time;
• and
• at the transmission time, the at least one relay station and the base station transmit said downlink signaling to the user stations/mobile stations simultaneously.

A relay station positioned in a cell of a wireless cellular network for transmitting data in mobile communication, comprising:

• an RF transceiving and processing unit;
• a negotiating unit;
• and
• a control unit, wherein
• said negotiating unit sends an operating mode switching instruction to the control unit after having negotiated with a base station in said cell;
• and
• said control unit controls the RF transceiving and processing unit so as to switch between at least two operating modes for transmitting a downlink signaling according to the mode switching instruction sent from the negotiating unit,
• wherein said at least two operating modes comprise a downlink operating mode I of not participating in the transmission of a downlink signaling and a downlink operating mode II of transmitting jointly the downlink signaling with the base station, wherein
• said control unit comprises:
• a downlink mode controller instructing the RF transceiving and processing unit to stop transmitting the downlink signaling, after the negotiating unit has sent the RF transceiving and processing unit an instruction to switch the operating mode into the downlink operating mode I, and instructing the RF transceiving and processing unit to receive a downlink signaling pre-transmitted from the base station before a transmission time and to transmit said downlink signaling to a user station/mobile station jointly with the base station at the transmission time after the negotiating unit has sent the RF transceiving and processing unit an instruction to switch the operating mode into the downlink operating mode II.

A base station for transmitting data in mobile communication, positioned in a cell of a multi-hop wireless cellular network, comprising:

• an RF transceiving and processing unit;
• a negotiating unit;
• and
• a control unit, wherein
• said negotiating unit sends an instruction to switch an operating mode to a relay station and the control unit after having negotiated with the relay station in the cell;
• and
• said control unit controls said relay station to switch between at least two operating modes of a downlink signaling transmission via the RF transceiving and processing unit according to the instruction to switch operating mode sent from the negotiating unit,
• wherein said at least two operating modes comprise an operating mode of not participating in the transmission of the downlink signaling and an operating mode of jointly transmitting the downlink signaling with the base station, wherein said control unit comprises:
• a pre-transferring module instructing the RF transceiving and processing unit to send a downlink signaling to be transmitted to the relay station in the operating mode of jointly transmitting downlink signaling with the base station before a transmission time.