Method and apparatus for downlink control information transmission

A downlink control information detecting method, comprising:

• Step A, performing downlink control information (DCI) detection in a searching space, and proceeding to step B after detecting a DCI;
• Step B, determining a position of a next DCI according to a position indication field in the currently detected DCI, wherein a respective DCI comprises a position indication field to indicate a position of a next DCI of the respective DCI;
• and
• Step C, performing DCI detection at the position of the next DCI, and returning to Step B, until all DCIs are detected.

A base station, comprising:

• a processor;
• a memory in connection with the processor;
• wherein the memory stores machine-readable instruction modules executable by the processor;
• the machine-readable instruction modules comprise:
• a generation module to generate more than one downlink control information (DCI) according to scheduling information of a user equipment (UE);
• a detection order determination module to determine a detection order of the more than one DCI;
• a position determination module to determine positions of the more than one DCI in a searching space;
• a position field adding module to add a position indication field to a respective DCI according to the detection order of the more than one DCI and the positions of the more than one DCI in the searching spaces;
• wherein, the position indication field is used to indicate a position of a next DCI of the respective DCI in the detection order;
• wherein, a position indication field in a last DCI in the detection order is used to indicate a position of a first DCI in the detection order;
• and
• a transmission module to transmit the more than one DCI in the searching space according to the positions of the more than one DCI in the searching space.