Method and system for implementing time division duplex configuration of secondary serving cell, and base station

A method for implementing time division duplex configuration, the method comprising:

• determining, by a secondary base station, time division duplex (TDD) configuration information for a secondary serving cell of the secondary base station, wherein the secondary serving cell belongs to the secondary base station;
• and
• sending, by the secondary base station, the TDD configuration information of the secondary serving cell and an identity of the secondary serving cell to a primary base station, so that the primary base station sends the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell to a terminal which maintains connections with the primary base station and the secondary base station simultaneously;
• wherein before sending, by the primary base station, the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell to the terminal, the method further comprises:
• after receiving, by the primary base station, the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell, determining a third time point that is a time point obtained by adding a prestored first duration to a time point at which the primary base station receives the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell, wherein the third time point is a time at which the TDD configuration information of the secondary serving cell takes effect on the terminal, and the first duration is a time interval between a time point at which the secondary base station sends the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell and a default time point at which the TDD configuration information of the secondary serving cell takes effect on the secondary base station;
• wherein the primary base station is configured to receive a response message from the terminal, the response message used to indicate successful determination of an uplink-downlink subframe allocation of the secondary serving cell.

A primary base station, comprising:

• a receiver, configured to receive time division duplex (TDD) configuration information of a secondary serving cell and an identity of the secondary serving cell from a secondary base station, wherein the TDD configuration information of the secondary serving cell is determined by the secondary base station for the secondary serving cell, and the secondary serving cell belongs to the secondary base station;
• a transmitter, configured to send the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell received by the receiver to a terminal which maintains connections with the primary base station and the secondary base station simultaneously;
• and
• a processor coupled to the receiver and to the transmitter, the processor configured to:
• after the receiver receives the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell, determine a third time point that is a time point obtained by adding a prestored first duration to a time point at which the receiver receives the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell, wherein the third time point is a time at which the TDD configuration information of the secondary serving cell takes effect on the terminal, and the first duration is a time interval between a time point at which the secondary base station sends the TDD configuration information of the secondary serving cell and the identity of the secondary serving cell and a default time point at which the TDD configuration information of the secondary serving cell takes effect on the secondary base station;
• and
• wherein the receiver is further configured to receive a response message from the terminal, the response message used to indicate successful determination of an uplink-downlink subframe allocation of the secondary serving cell.