Method for Transmitting Downlink Control Information, Terminal Device and Network Device

A terminal device, comprising:

• a processor, used for determining a plurality of candidate resource sets for transmitting first control information;
• and
• a transceiver, used for detecting the first control information sent by a network device in the plurality of candidate resource sets;
• wherein the processor is further used for determining a target resource set from the plurality of candidate resource sets according to a detection result of the first control information;
• the processor is further used for determining a target control channel resource corresponding to the target resource set according to the target resource set and a first mapping relationship, wherein the first mapping relationship is used for indicating a corresponding relationship between the plurality of candidate resource sets and a plurality of control channel resources;
• and
• the transceiver is further used for detecting second control information sent by the network device in the target control channel resource.

A network device, comprising:

• a processor, used for determining a plurality of candidate resource sets for transmitting first control information;
• and
• a transceiver, used for sending the first control information to a terminal device in the plurality of candidate resource sets, wherein, a beam for sending the first control information on each candidate resource set is different from beams for sending the first control information on other candidate resource sets in the plurality of candidate resource sets;
• wherein the processor is further used for determining a plurality of control channel resources corresponding to the plurality of candidate resource sets;
• and
• the transceiver is further used for sending second control information to the terminal device on the plurality of control channel resources, wherein, a beam for sending the second control information on each control channel resource is the same as a beam for transmitting the first control information on a candidate resource set corresponding to the each control channel resource.