Information sending method and apparatus and information receiving method and apparatus

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.

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.

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.