Data transmission method based on cross-carrier scheduling, user equipment, and base station

A base station, comprising:

• a processor, configured to determine a first downlink subframe according to a timing relationship of an uplink hybrid automatic repeat request (HARQ) of a reference uplink and downlink configuration, wherein the first downlink subframe is used to indicate timing of sending uplink scheduling grant information of a first uplink subframe of a scheduled cell;
• a sender, configured to send the uplink scheduling grant information in a subframe of a scheduling cell corresponding to the first downlink subframe, under a circumstance that the subframe of the scheduling cell corresponding to the first downlink subframe is a downlink subframe, wherein an uplink and downlink configuration of the scheduling cell and an uplink and downlink configuration of the scheduled cell are different;
• and
• a receiver, configured to receive uplink data sent in the first uplink subframe by a user equipment.

A user equipment, comprising:

• a processor, configured to determine a first downlink subframe according to a timing relationship of an uplink hybrid automatic repeat request (HARQ) of a reference uplink and downlink configuration, wherein the first downlink subframe is used to indicate timing of sending uplink scheduling grant information of a first uplink subframe of a scheduled cell;
• a receiver, configured to receive the uplink scheduling grant information in a subframe of a scheduling cell corresponding to the first downlink subframe, under a circumstance that the subframe of the scheduling cell corresponding to the first downlink subframe is a downlink subframe, wherein an uplink and downlink configuration of the scheduling cell and an uplink and downlink configuration of the scheduled cell are different;
• and
• a sender, configured to send uplink data in the first uplink subframe according to the uplink scheduling grant information.

A readable medium, comprising:

• computer readable instructions that are executed to perform the following operation, wherein the operation comprises:
• determining a first downlink subframe according to a timing relationship of an uplink hybrid automatic repeat request (HARQ) of a reference uplink and downlink configuration, wherein the first downlink subframe is used to indicate timing of sending uplink scheduling grant information of a first uplink subframe of a scheduled cell;
• transmitting the uplink scheduling grant information in a subframe of a scheduling cell corresponding to the first downlink subframe, under a circumstance that the subframe of the scheduling cell corresponding to the first downlink subframe is a downlink subframe, wherein an uplink and downlink configuration of the scheduling cell and an uplink and downlink configuration of the scheduled cell are different;
• and
• transmitting uplink data in the first uplink subframe.