Method of and apparatus for informing dynamic uplink and downlink configuration in heterogeneous network

A method, in a user equipment in a pico cell of a heterogeneous network based upon a time division duplex system, of obtaining dynamic uplink and downlink resource configuration information from a base station, the method comprising:

• receiving broadcast channel signaling from the base station, wherein the broadcast channel signaling comprises a bit indicating whether dynamic uplink and downlink configuration is triggered for the user equipment;
• and
• receiving physical downlink control channel signaling when the bit indicates that the dynamic uplink and downlink configuration is triggered for the user equipment, wherein the physical downlink control channel signaling comprises downlink control information, and a location of a sub-frame comprising the downlink control information in a frame indicates a dynamic uplink and downlink configuration type currently adopted by the user equipment;
• and
• performing corresponding uplink and downlink transmission according to the dynamic uplink and downlink configuration type.

A first apparatus, in a central processing unit of a control device of a pico cell or a macro cell of a heterogeneous network based upon a time division duplex system, for instructing a user equipment to perform a dynamic uplink and downlink resource configuration, the first apparatus comprising:

• a first triggering device, configured to indicate whether the dynamic uplink and downlink configuration is triggered for the user equipment by using a bit reserved in broadcast channel signaling;
• an allocating device, configured to allocate a resource of a sub-frame in a frame for downlink control information in physical downlink control channel signaling when the dynamic uplink and downlink configuration is triggered for the user equipment, wherein a location of the sub-frame in the frame corresponds in a one-to-one manner to a dynamic uplink and downlink configuration type currently adopted by the user equipment, and the location of the sub-frame in the frame indicates a dynamic uplink and downlink configuration type currently adopted by the user equipment;
• and
• a first transmitter, configured to transmit the physical downlink control channel signaling comprising the frame to the user equipment.

A third apparatus, in a user equipment in a pico cell of a heterogeneous network based upon a time division duplex system, for obtaining dynamic uplink and downlink resource configuration information from a base station, the third apparatus comprising:

• a first receiver, configured to receive broadcast channel signaling from the base station, wherein the broadcast channel signaling comprises a bit indicating whether dynamic uplink and downlink configuration is triggered for the user equipment;
• and
• the first receiver is further configured to receive physical downlink control channel signaling when the bit indicates that the dynamic uplink and downlink configuration is triggered for the user equipment, wherein the physical downlink control channel signaling comprises downlink control information, and a location of a sub-frame comprising the downlink control information in a frame indicates a dynamic uplink and downlink configuration type currently adopted by the user equipment;
• and
• a transmitter configured to perform corresponding uplink and downlink transmission according to the dynamic uplink and downlink configuration type.