Information sending method and apparatus and information receiving method and apparatus

1. A method, comprising:

sending, by a terminal device, a random access signal to a network device on a random access resource, wherein the random access resource is on a first uplink carrier or a second uplink carrier, wherein the first uplink carrier and the second uplink carrier both correspond to a downlink carrier, wherein the first uplink carrier is a supplementary uplink (SUL) carrier, and wherein the second uplink carrier is a time division duplex (TDD) uplink carrier;

determining, by the terminal device, in response to the random access resource being on the second uplink carrier, a random access identifier corresponding to the random access resource according to a time-frequency resource sequence number of the random access resource and a carrier identifier of the second uplink carrier, wherein a relationship between the random access identifier, the time-frequency resource sequence number, and the carrier identifier satisfies: S=1+t_id+10*(n−1)+60, wherein S is the random access identifier, t_id is a sequence number of a first time unit occupied by the random access resource, and n is a carrier sequence number of the second uplink carrier; and

receiving, by the terminal device on the downlink carrier, a random access response from the network device according to the random access identifier.

2. The method according to claim 1 , wherein a frequency band on which the first uplink carrier is located is different from a frequency band on which the second uplink carrier is located.

3. The method according to claim 1 , wherein the random access identifier is a random access-radio network temporary identifier (RA-RNTI).

4. The method according to claim 1 , wherein the method further comprises:

determining, by the terminal device, in response to the random access resource being on the first uplink carrier, a random access identifier corresponding to the random access resource, wherein the random access identifier meets S=1+t_id+n1*f_id, wherein S is the random access identifier, t_id is a sequence number of a first time unit occupied by the random access resource, f_id is a frequency domain resource sequence number of the random access resource in the first time unit, and n1 is a positive integer.

5. The method according to claim 1 , wherein the random access resource is independently numbered in frequency domain for different uplink carriers.

6. A method, comprising:

receiving, by a network device, a random access signal from a terminal device on a random access resource, wherein the random access resource is on a first uplink carrier or a second uplink carrier, wherein the first uplink carrier and the second uplink carrier both correspond to a downlink carrier, wherein the first uplink carrier is a supplementary uplink (SUL) carrier, and wherein the second uplink carrier is a time division duplex (TDD) uplink carrier;

determining, by the network device, in response to the random access resource being on the second uplink carrier, a random access identifier corresponding to the random access resource according to a time-frequency resource sequence number of the random access resource and a carrier identifier of the second uplink carrier, wherein a relationship between the random access identifier, the time-frequency resource sequence number, and the carrier identifier satisfies: S=1+t_id+10*(n−1)+60, wherein S is the random access identifier, t_id is a sequence number of a first time unit occupied by the random access resource, and n is a carrier sequence number of the second uplink carrier; and

sending, by the network device on the downlink carrier, a random access response to the terminal device according to the random access identifier.

7. The method according to claim 6 , wherein a frequency band on which the first uplink carrier is located is different from a frequency band on which the second uplink carrier is located.

8. The method according to claim 6 , wherein the random access identifier is a random access-radio network temporary identifier (RA-RNTI).

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

determining, by the network device, in response to the random access resource being on the first uplink carrier, a random access identifier corresponding to the random access resource, wherein the random access identifier meets S=1+t_id+n1*f_id, wherein S is the random access identifier, t_id is a sequence number of a first time unit occupied by the random access resource, f_id is a frequency domain resource sequence number of the random access resource in the first time unit, and n1 is a positive integer.

10. The method according to claim 6 , wherein the random access resource is independently numbered in frequency domain for different uplink carriers.

11. An apparatus, comprising:

at least one processor; and

a memory coupled to the at least one processor, the at least one processor being configured to:

send a random access signal to a network device on a random access resource, wherein the random access resource is on a first uplink carrier or a second uplink carrier, wherein the first uplink carrier and the second uplink carrier both correspond to a downlink carrier, wherein the first uplink carrier is a supplementary uplink (SUL) carrier, and wherein the second uplink carrier is a time division duplex (TDD) uplink carrier;

determine, in response to the random access resource being on the second uplink carrier, a random access identifier corresponding to the random access resource according to a time-frequency resource sequence number of the random access resource and a carrier identifier of the second uplink carrier, wherein a relationship between the random access identifier, the time-frequency resource sequence number, wherein the carrier identifier satisfies: S=1+t_id+10*(n−1)+60, wherein S is the random access identifier, wherein t_id is a sequence number of a first time unit occupied by the random access resource, and wherein n is a carrier sequence number of the second uplink carrier; and

receive, on the downlink carrier, a random access response from the network device according to the random access identifier.

12. The apparatus according to claim 11 , wherein a frequency band on which the first uplink carrier is located is different from a frequency band on which the second uplink carrier is located.

13. The apparatus according to claim 11 , wherein the random access identifier is a random access-radio network temporary identifier (RA-RNTI).

14. The apparatus according to claim 11 , wherein the at least one processor being further configured to:

when the random access resource is on the first uplink carrier, determine a random access identifier corresponding to the random access resource, wherein the random access identifier meets S=1+t_id+n1*f_id, wherein S is the random access identifier, t_id is a sequence number of a first time unit occupied by the random access resource, f_id is a frequency domain resource sequence number of the random access resource in the first time unit, and n1 is a positive integer.

15. The apparatus according to claim 11 , wherein the random access resource is independently numbered in frequency domain for different uplink carriers.

16. An apparatus, comprising:

at least one processor; and

a memory coupled to the at least one processor, the at least one processor being configured to:

receive a random access signal from a terminal device on a random access resource, wherein the random access resource is on a first uplink carrier or a second uplink carrier, wherein the first uplink carrier and the second uplink carrier both correspond to a downlink carrier, wherein the first uplink carrier is a supplementary uplink (SUL) carrier, and wherein the second uplink carrier is a time division duplex (TDD) uplink carrier;

determine, in response to the random access resource being on the second uplink carrier, a random access identifier corresponding to the random access resource according to a time-frequency resource sequence number of the random access resource and a carrier identifier of the second uplink carrier, wherein a relationship between the random access identifier, the time-frequency resource sequence number, and the carrier identifier satisfies: S=1+t_id+10*(n−1)+60, wherein S is the random access identifier, t_id is a sequence number of a first time unit occupied by the random access resource, and n is a carrier sequence number of the second uplink carrier; and

send, on the downlink carrier, a random access response to the terminal device according to the random access identifier.

17. The apparatus according to claim 16 , wherein a frequency band on which the first uplink carrier is located is different from a frequency band on which the second uplink carrier is located.

18. The apparatus according to claim 16 , wherein the random access identifier is a random access-radio network temporary identifier (RA-RNTI).

19. The apparatus according to claim 16 , wherein the at least one processor is further configured to:

determine, in response to the random access resource being on the first uplink carrier, a random access identifier corresponding to the random access resource, wherein the random access identifier meets S=1+t_id+n1*f_id, wherein S is the random access identifier, t_id is a sequence number of a first time unit occupied by the random access resource, f_id is a frequency domain resource sequence number of the random access resource in the first time unit, and n1 is a positive integer.

20. The apparatus according to claim 16 , wherein the random access resource is independently numbered in frequency domain for different uplink carriers.