Data transmission method and apparatus
This application provides a data transmission method and apparatus. The method includes: obtaining, by a terminal, information used to indicate a first condition; obtaining to-be-transmitted data; and when the first condition is met, sending, by the terminal over a sidelink, the to-be-transmitted data that is on a first logical channel by using a first carrier frequency and the to-be-transmitted data that is on a second logical channel by using a second carrier frequency. In this method, the same data is sent, over the sidelink, on different carrier frequencies by using two logical channels, and a receiving device can receive the same duplicate data, thereby improving data transmission reliability.
1. A data transmission method performed by a terminal, the method comprising:
obtaining reliability information associated with a first identifier and priority information,
wherein the reliability information comprises a reliability value set,
wherein the reliability value set is a group of discrete values, and
wherein the priority information comprises a priority value set;
obtaining a reliability value and a priority value of first data of the terminal; and
sending a sidelink buffer status report (BSR) to a network device in response to both the reliability value being a value from the reliability value set and the priority value being a value from the priority value set,
wherein the first identifier is included in the sidelink BSR.
2. The method according to claim 1 , wherein the first identifier comprises one of the following (a)-(c):
(a) a first logical channel group identity;
(b) a first destination address identifier; or
(c) a first logical channel group identity and a first destination address identifier.
3. The method according to claim 1 , wherein one of the following situations exists:
the reliability information comprises a second reliability threshold, and the reliability value is greater than or equal to the second reliability threshold;
the reliability information comprises a third reliability threshold, and the reliability value is less than or equal to the third reliability threshold;
the reliability information comprises a second enumerated reliability value, and the reliability value is equal to the second enumerated reliability value; or
the reliability information comprises a second reliability range, and the reliability value falls within the second reliability range.
4. A data transmission method applied to a network device, the method comprising:
sending, to a terminal, reliability information and priority information associated with at least one logical channel group (LCG) ID,
wherein the reliability information comprises a reliability value set,
wherein the reliability value set is a group of discrete values,
wherein the priority information comprises a priority value set, and
wherein at least one reliability value of the group of discrete values and a priority value of the priority value set are identified as describing a first LCG ID of the at least one LCG ID; and
receiving a sidelink buffer status report (BSR), including the first LCG ID, from the terminal.
5. The method according to claim 4 , wherein one of the following situations exists:
the reliability information comprises a second reliability threshold, and the at least one reliability value of the group of discrete values is greater than or equal to the second reliability threshold;
the reliability information comprises a third reliability threshold, and the at least one reliability value of the group of discrete values is less than or equal to the third reliability threshold;
the reliability information comprises a second enumerated reliability value, and the at least one reliability value of the group of discrete values is equal to the second enumerated reliability value; or
the reliability information comprises a second reliability range, and the at least one reliability value of the group of discrete values falls within the second reliability range.
6. An apparatus comprising:
a processor and a non-transitory storage medium storing executable instructions that when executed by the processor, cause the apparatus to:
obtain reliability information associated with a first identifier and priority information,
wherein the reliability information comprises a reliability value set,
wherein the reliability value set is a group of discrete values, and
wherein the priority information comprises a priority value set;
obtain a reliability value and a priority value of first data of the terminal; and
send a sidelink buffer status report (BSR) to a network device in response to the reliability value being a value from the reliability value set and the priority value being a value from the priority value set,
wherein the first identifier is included in the sidelink BSR.
7. The apparatus according to claim 6 , wherein the first identifier comprises one of the following (a)-(c):
(a) a first logical channel group identity;
(b) a first destination address identifier; or
(c) a first logical channel group identity and a first destination address identifier.
8. The apparatus according to claim 6 , wherein one of the following situations exists:
the reliability information comprises a second reliability threshold, and the reliability value is greater than or equal to the second reliability threshold;
the reliability information comprises a third reliability threshold, and the reliability value is less than or equal to the third reliability threshold;
the reliability information comprises a second enumerated reliability value, and the reliability value is equal to the second enumerated reliability value; or
the reliability information comprises a second reliability range, and the reliability value falls within the second reliability range.
9. An apparatus comprising:
a processor and a non-transitory storage medium storing executable instructions that when executed by the processor, cause the apparatus to:
send, to a terminal, reliability information and priority information associated with at least one logical channel group (LCG) ID,
wherein the reliability information comprises a reliability value set,
wherein the reliability value set is a group of discrete values,
wherein the priority information comprises a priority value set, and
wherein at least one reliability value of the group of discrete values and a priority value of the priority value set are identified as describing a first LCG ID of the at least one LCG ID; and
receive a sidelink buffer status report (BSR), including the first LCG ID, from the terminal.
10. The apparatus according to claim 9 , wherein one of the following situations exists:
the reliability information comprises a second reliability threshold, and the at least one reliability value of the group of discrete values is greater than or equal to the second reliability threshold;
the reliability information comprises a third reliability threshold, and the at least one reliability value of the group of discrete values is less than or equal to the third reliability threshold;
the reliability information comprises a second enumerated reliability value, and the at least one reliability value of the group of discrete values is equal to the second enumerated reliability value; or
the reliability information comprises a second reliability range, and the at least one reliability value of the group of discrete values falls within the second reliability range.