Method and apparatus for transmitting uplink control information

1. A method for transmitting uplink control information, comprising:

generating, by a terminal device, an encoded uplink data packet, wherein the uplink data packet belongs to an uplink channel, wherein the uplink channel is carried on a candidate time-frequency resource in a first time transmission interval (TTI), wherein the candidate time-frequency resource is a first time-frequency resource or a second time-frequency resource, and wherein a second time-domain start point of the second time-frequency resource is later than a first time-domain start point of the first time-frequency resource;

performing, by the terminal device, detection on a carrier in which the candidate time-frequency resource is located; and

sending, by the terminal device, the uplink channel on the candidate time-frequency resource based on a result of the detection, wherein the uplink channel comprises the uplink control information and the encoded uplink data packet.

2. The method according to claim 1 , wherein the sending, by the terminal device, the uplink channel on the candidate time-frequency resource based on a result of the detection comprises:

when the terminal device determines, before the first time-domain start point, that the carrier in which the candidate time-frequency resource is located is in a sendable state, sending, by the terminal device, the uplink channel on the first time-frequency resource.

3. The method according to claim 2 , wherein the sending, by the terminal device, the uplink channel on the first time-frequency resource comprises:

determining, by the terminal device, a third time-frequency resource from the first time-frequency resource based on a size value of the first time-frequency resource and a first coefficient; and

sending, by the terminal device, the uplink control information by using the third time-frequency resource.

4. The method according to claim 1 , wherein the sending, by the terminal device, the uplink channel on the candidate time-frequency resource based on a result of the detection comprises:

when the terminal device determines, before the first time-domain start point, that the carrier in which the candidate time-frequency resource is located is not in a sendable state, and the terminal device determines, before the second time-domain start point, that the carrier in which the candidate time-frequency resource is located is in a sendable state, sending, by the terminal device, the uplink channel on the second time-frequency resource.

5. The method according to claim 4 , wherein the sending, by the terminal device, the uplink channel on the second time-frequency resource comprises:

determining, by the terminal device, a fourth time-frequency resource from the second time-frequency resource based on a size value of the first time-frequency resource and a first coefficient; and

sending, by the terminal device, the uplink control information by using the fourth time-frequency resource.

6. The method according to claim 4 , wherein the method further comprises:

prohibiting the terminal device from sending the uplink control information on a time-frequency resource other than the second time-frequency resource in the first time-frequency resource.

7. The method according to claim 1 , wherein a time-domain resource occupied by the second time-frequency resource is a subset of a time-domain resource occupied by the first time-frequency resource, and wherein a size of a frequency-domain resource occupied by the first time-frequency resource is equal to a size of a frequency-domain resource occupied by the second time-frequency resource.

8. The method according to claim 1 , wherein the uplink control information comprises at least one of hybrid automatic repeat request (HARQ) feedback information, downlink channel quality indicator information (CQI), rank indication information (RI), and precoding matrix indicator information (PMI).

9. A method for transmitting uplink control information, comprising:

sending, by a network device, scheduling information to a terminal device, wherein the scheduling information is used to instruct the terminal device to transmit an uplink channel within a first time transmission interval (TTI), wherein the uplink channel comprises at least the uplink control information, wherein the uplink channel is carried on a candidate time-frequency resource in the first TTI, wherein the candidate time-frequency resource is a first time-frequency resource or a second time-frequency resource, and wherein a second time-domain start point of the second time-frequency resource is later than a first time-domain start point of the first time-frequency resource; and

receiving, by the network device on the candidate time-frequency resource, the uplink channel sent by the terminal device.

10. An apparatus for transmitting uplink control information, comprising:

at least one processor;

one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to generate an encoded uplink data packet, wherein the uplink data packet belongs to an uplink channel, wherein the uplink channel is carried on a candidate time-frequency resource in a first time transmission interval (TTI), wherein the candidate time-frequency resource is a first time-frequency resource or a second time-frequency resource, and wherein a second time-domain start point of the second time-frequency resource is later than a first time-domain start point of the first time-frequency resource; and

a receiver-transmitter, the receiver-transmitter configured to:

perform detection on a carrier in which the candidate time-frequency resource is located; and

send the uplink channel on the candidate time-frequency resource based on a result of the detection, wherein the uplink channel comprises the uplink control information and the encoded uplink data packet.

11. The apparatus according to claim 10 , wherein when the apparatus determines, before the first time-domain start point, that the carrier in which the candidate time-frequency resource is located is in a sendable state, the receiver-transmitter is configured to send the uplink channel on the first time-frequency resource.

12. The apparatus according to claim 11 , wherein the receiver-transmitter is configured to:

determine a third time-frequency resource from the first time-frequency resource based on a size value of the first time-frequency resource and a first coefficient; and

send the uplink control information by using the third time-frequency resource.

13. The apparatus according to claim 12 , wherein when the apparatus determines, before the first time-domain start point, that the carrier in which the candidate time-frequency resource is located is not in a sendable state, and the apparatus determines, before the second time-domain start point, that the carrier in which the candidate time-frequency resource is located is in a sendable state, the receiver-transmitter is configured to send the uplink channel on the second time-frequency resource.

14. The apparatus according to claim 13 , wherein the receiver-transmitter is configured to:

determine a fourth time-frequency resource from the second time-frequency resource based on the size value of the first time-frequency resource and the first coefficient; and

send the uplink control information by using the fourth time-frequency resource.

15. The apparatus according to claim 13 , wherein the receiver-transmitter is further configured to prohibit sending of the uplink control information on a time-frequency resource other than the second time-frequency resource in the first time-frequency resource.

16. The apparatus according to claim 10 , wherein a time-domain resource occupied by the second time-frequency resource is a subset of a time-domain resource occupied by the first time-frequency resource, and wherein a size of a frequency-domain resource occupied by the first time-frequency resource is equal to a size of a frequency-domain resource occupied by the second time-frequency resource.

17. The apparatus according to claim 10 , wherein the uplink control information comprises at least one of hybrid automatic repeat request (HARQ) feedback information, downlink channel quality indicator information (CQI), rank indication information (RI), and precoding matrix indicator information (PMI).

18. An apparatus for transmitting uplink control information, comprising:

at least one processor;

one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to generate scheduling information, wherein the scheduling information is used to instruct a terminal device to transmit an uplink channel within a first time transmission interval (TTI), wherein the uplink channel comprises at least the uplink control information, wherein the uplink channel is carried on a candidate time-frequency resource in the first TTI, wherein the candidate time-frequency resource is a first time-frequency resource or a second time-frequency resource, and wherein a second time-domain start point of the second time-frequency resource is later than a first time-domain start point of the first time-frequency resource; and

a receiver-transmitter, the receiver-transmitter configured to:

send the scheduling information to the terminal device; and

receive, on the candidate time-frequency resource, the uplink channel sent by the terminal device.

19. A communications device, comprising:

at least one processor; and

a non-transitory computer-readable storage medium coupled to the at least one processor and storing programming instructions for execution by the at least one processor, wherein the programming instructions instruct the at least one processor to perform operations comprising:

generating an encoded uplink data packet, wherein the uplink data packet belongs to an uplink channel, wherein the uplink channel is carried on a candidate time-frequency resource in a first time transmission interval (TTI), wherein the candidate time-frequency resource is a first time-frequency resource or a second time-frequency resource, and wherein a second time-domain start point of the second time-frequency resource is later than a first time-domain start point of the first time-frequency resource;

performing detection on a carrier in which the candidate time-frequency resource is located; and

sending the uplink channel on the candidate time-frequency resource based on a result of the detection, wherein the uplink channel comprises uplink control information and the encoded uplink data packet.

20. A non-transitory computer-readable storage media comprising instructions which, when executed by one or more processors, cause the one or more processors to perform operations comprising:

generating an encoded uplink data packet, wherein the uplink data packet belongs to an uplink channel, wherein the uplink channel is carried on a candidate time-frequency resource in a first time transmission interval (TTI), wherein the candidate time-frequency resource is a first time-frequency resource or a second time-frequency resource, and wherein a second time-domain start point of the second time-frequency resource is later than a first time-domain start point of the first time-frequency resource;

performing detection on a carrier in which the candidate time-frequency resource is located; and

sending the uplink channel on the candidate time-frequency resource based on a result of the detection, wherein the uplink channel comprises uplink control information and the encoded uplink data packet.

21. A chip system, comprising a processor, configured to invoke a computer program from a memory and run the computer program, wherein a communications device on which the chip system is installed performs operations comprising:

generating an encoded uplink data packet, wherein the uplink data packet belongs to an uplink channel, wherein the uplink channel is carried on a candidate time-frequency resource in a first time transmission interval (TTI), wherein the candidate time-frequency resource is a first time-frequency resource or a second time-frequency resource, and wherein a second time-domain start point of the second time-frequency resource is later than a first time-domain start point of the first time-frequency resource;

performing detection on a carrier in which the candidate time-frequency resource is located; and

sending the uplink channel on the candidate time-frequency resource based on a result of the detection, wherein the uplink channel comprises uplink control information and the encoded uplink data packet.