Method and device for transmitting uplink control information

A method for receiving an uplink control channel, comprising:

• transmitting, by a network device, downlink data scheduled by a downlink control channel to a user equipment (UE), wherein the downlink control channel corresponds to a secondary serving cell which corresponds to the network device, the secondary serving cell is one of at least two serving cells configured for the UE, the at least two serving cells further comprise a primary serving cell;
• determining identity information which is used by the UE;
• and
• detecting, using the identity information, a physical uplink control channel corresponding to the downlink data on a channel resource for feeding back the physical uplink control channel, wherein the physical uplink control channel is generated by the UE using the identity information and transmitted by the UE using transmit power of the physical uplink control channel, wherein the transmit power is determined by the UE according to a value of path loss and a transmit power control (TPC) command in the downlink control channel;
• wherein,
• when the downlink control channel only corresponds to the secondary serving cell, the path loss is first path loss;
• when the downlink control channel only corresponds to the primary serving cell, the path loss is second path loss;
• and when the downlink control channel corresponds to the primary serving cell and the secondary serving cell, the path loss is second path loss;
• or,
• when the downlink control channel only corresponds to the primary serving cell, the path loss is second path loss;
• when the downlink control channel only corresponds to the secondary serving cell, the path loss is first path loss;
• and when the downlink control channel corresponds to the secondary serving cell and the primary serving cell the path loss is first path loss.

A user equipment (UE), comprises:

• a receiver, configured to receive downlink data which is scheduled by a downlink control channel from a network device, where the downlink control channel corresponds to a serving cell, the serving cell is one of at least two serving cells configured for the UE, the at least two serving cells include one primary serving cell and at least one secondary serving cell;
• a processor, configured to select identity information according to the downlink control channel corresponding to the downlink data received by the receiver, and generate a physical uplink control channel corresponding to the downlink data using the identity information;
• and
• a transmitter, configured to transmit the physical uplink control channel on a channel resource of the physical uplink control channel generated by the processor by using transmit power, wherein
• the transmit power is determined according to a value of path loss and a transmit power control (TPC) command in the downlink control channel;
• wherein,
• when the downlink control channel only corresponds to the secondary serving cell, the path loss is first path loss;
• when the downlink control channel only corresponds to the primary serving cell, the path loss is second path loss;
• and when the downlink control channel corresponds to the primary serving cell and the secondary serving cell the path loss is second path loss;
• or,
• when the downlink control channel only corresponds to the primary serving cell, the path loss is second path loss;
• when the downlink control channel only corresponds to the secondary serving cell, the path loss is first path loss;
• and when the downlink control channel corresponds to the secondary serving cell and the primary serving cell, the path loss is first path loss.

A network device, comprises:

• a transmitter, configured to transmit downlink data scheduled by a downlink control channel to a user equipment (UE), where the downlink control channel corresponds to an secondary serving cell, or a primary serving cell which corresponds to the network device, the secondary serving cell is one of at least two serving cells configured for the UE, the at least two serving cells further include one primary serving cell;
• a processor, configured to determine identity information which is used by the UE after the transmitter transmits the downlink data;
• and
• a receiver, configured to, on a channel resource for feeding back a physical uplink control channel, detect the physical uplink control channel corresponding to the downlink data using the identity information, where the physical uplink control channel is generated by the UE using the identity information and transmitted by the UE using transmit power of the physical uplink control channel, wherein the transmit power is determined by the UE according to a value of path loss and a transmit power control (TPC) command in the downlink control channel;
• wherein,
• when the downlink control channel only corresponds to the secondary serving cell, the path loss is first path loss;
• when the downlink control channel only corresponds to the primary serving cell, the path loss is second path loss;
• and when the downlink control channel corresponds to the primary serving cell and the secondary serving cell, the path loss is second path loss;
• or,
• when the downlink control channel only corresponds to the primary serving cell, the path loss is second path loss;
• when the downlink control channel only corresponds to the secondary serving cell, the path loss is first path loss;
• and when downlink control channel corresponds to the secondary serving cell and the primary serving cell, the path loss is first path loss.