Control information sending method, receiving method, and device

A control information receiving method comprising:

• determining, by a user equipment, a first subframe of a radio frame on a carrier,
• wherein the first subframe comprises at least two control regions, each of the control regions is in first n symbols of the first subframe, and n is a natural number less than 5, a quantity of symbols within the first subframe is 12 or 14, the radio frame comprises the first subframe and at least a second subframe that does not comprise a control region;
• receiving resource positions of the at least two control regions that is notified by the network device, wherein the at least two control regions are frequency-multiplexed;
• and
• receiving, by the user equipment, control information and a demodulation reference signal sent by a network device in at least one of the at least two control regions of the first subframe of the first radio frame, wherein the control information comprises at least one physical downlink control channel (PDCCH).

A network device comprising:

• a processor configured to determine a first subframe of a radio frame on a carrier,
• wherein the first subframe comprises at least two control regions, each of the control regions is in first n symbols of the first subframe, and n is a natural number less than 5, a quantity of symbols within the first subframe is 12 or 14, the radio frame comprises the first subframe and at least a second subframe that does not comprise a control region;
• a transmitter configured to cooperate with the processor to notify the user equipment of resource positions of the at least two control regions, wherein the at least two control regions are frequency-multiplexed;
• and
• the transmitter further configured to cooperate with the processor to send control information and a demodulation reference signal in at least one of the at least two control regions of the first subframe of the radio frame determined by the processor, wherein the control information comprises at least one physical downlink control channel (PDCCH).

A user equipment comprising:

• a processor configured to determine a first subframe of a first radio frame on a first carrier,
• wherein the first subframe comprises at least two control regions, each of the control regions is in first n symbols of the first subframe, and n is a natural number less than 5, a quantity of symbols within the first subframe is 12 or 14, the radio frame comprises the first subframe and at least a second subframe that does not comprise a control region;
• a receiver configured to cooperate with the processor to receive resource positions of the at least two control regions that is notified by the network device, wherein the at least two control regions are frequency-multiplexed;
• and
• the receiver is further configured to cooperate with the processor to receive control information and demodulation reference signal sent by a network device in at least one of the at least two control regions of the first subframe determined by the processor, wherein the control information comprises at least one physical downlink control channel (PDCCH).