Method for transmitting downlink control information, method for blind detection, base station and terminal equipment

Terminal equipment, configured with a carrier segment by a base station, when a bit length of a Resource Assignment (RA) domain in a Downlink Control Information (DCI) of terminal equipment configured with a carrier segment is unequal to that of a RA domain in a DCI of terminal equipment not configured with a carrier segment, the terminal equipment comprising:

• a first blind detecting unit configured to detect corresponding DCI in a common search region of a control channel in a generating manner of the DCI;
• wherein the DCI is generated by the base station in a predefined manner, such that a bit length of the DCI is equal to that of a DCI of the same format of terminal equipment not configured with a carrier segment in the common search region.

A base station, when a bit length of a Resource Assignment (RA) domain in a Downlink Control Information (DCI) of terminal equipment configured with a carrier segment is unequal to that of a RA domain in a DCI of terminal equipment not configured with a carrier segment, the base station comprising:

• a second information transmitting unit configured not to transmit corresponding user-specific DCI for terminal equipment configured with a carrier segment in a common search region of a control channel, and to transmit user-specific DCI in a user-specific search region.

Terminal equipment, configured with a carrier segment by a base station, when a bit length of a Resource Assignment (RA) domain in a DCI of terminal equipment configured with a carrier segment is unequal to that of a RA domain in a DCI of terminal equipment not configured with a carrier segment, the terminal equipment comprising:

• a second blind detecting unit configured to detect user-specific DCI in a user-specific search region of a control channel, and not to detect user-specific DCI in a common search region of the control channel.