Data transmission method and apparatus
This application provides a data transmission method. The method includes: receiving a first PDCCH, where the first PDCCH includes first DCI, the first DCI indicates a first resource, and the first resource is used to carry first uplink data; determining a first time period or a second time period, where the first time period includes a time period for monitoring a second PDCCH, and the second time period does not include the second PDCCH; and monitoring the second PDCCH based on the first time period or the second time period.
1 . A method, comprising:
receiving a first physical downlink control channel (PDCCH), wherein the first PDCCH comprises first downlink control information (DCI), the first DCI indicates a first resource, and the first resource is used to carry first uplink data;
determining a first time period or a second time period, wherein the first time period comprises a time period for monitoring a second PDCCH so that a terminal device is able to monitor the second PDCCH in the first time period, and the second time period does not comprise the second PDCCH so that the terminal device is able to skip monitoring the second PDCCH in the second time period; and
monitoring the second PDCCH based on the first time period or the second time period;
wherein the second PDCCH comprises a second DCI, the second DCI indicates a second resource, and the second resource is used to carry second uplink data;
wherein determining the first time period or the second time period comprises:
determining the first time period or the second time period based on a size of a first time interval, wherein the first time interval comprises a time interval between an end moment at which the first PDCCH is received and a start moment corresponding to the first resource; and
wherein determining the first time period or the second time period based on the size of the first time interval comprises:
determining the first time period or the second time period based on at least one of a first size relationship, a second size relationship, or both the first size relationship and the second size relationship, wherein the first size relationship is between the size of the first time interval and a first threshold, the second size relationship is between the size of the first time interval and a second threshold, and the second threshold is greater than the first threshold.
2 . The method according to claim 1 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is less than or equal to the first threshold, determining that the second time period comprises a time period from the end moment of the first PDCCH to the start moment corresponding to the first resource.
3 . The method according to claim 1 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is greater than the first threshold and less than or equal to the second threshold, determining that the first time period comprises a time period from the end moment of the first PDCCH to a start moment of a previous transmission time unit of the start moment corresponding to the first resource.
4 . The method according to claim 1 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is greater than the second threshold, determining that the first time period comprises a time period from the end moment of the first PDCCH to a start moment of a previous transmission time unit that is earlier than the start moment corresponding to the first resource.
5 . The method according to claim 4 , further comprising:
when the second DCI is received in the first time period, determining that the second time period comprises a time period from an end moment of the second PDCCH to the start moment corresponding to the first resource.
6 . The method according to claim 1 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is greater than the second threshold, determining that the second time period comprises a time period from the end moment of the first PDCCH to a start moment of a previous transmission time unit that is earlier than the start moment corresponding to the first resource, and the first time period comprises a time period from an end moment of the second time period to the start moment of the previous transmission time unit of the start moment corresponding to the first resource.
7 . The method according to claim 1 , wherein the first time period comprises a time period from a moment that is later than or equal to an end moment corresponding to the first resource to a moment that is delayed by a first time amount from the end moment corresponding to the first resource, and the first time amount is greater than or equal to 0.
8 . The method according to claim 7 , wherein the second time period comprises a time period from an end moment of the first time period to a moment that is a first delay later than the end moment corresponding to the first resource, and the first delay is a round-trip delay between a first communication apparatus and a second communication apparatus.
9 . The method according to claim 1 , wherein the second time period comprises a time period from a moment that is later than or equal to an end moment corresponding to the first resource to a moment that is delayed by a second time amount from the end moment corresponding to the first resource, and the second time amount is greater than or equal to 0.
10 . The method according to claim 9 , wherein the first time period comprises a time period from an end moment of the second time period to a moment that is a first delay later than the end moment corresponding to the first resource, and the first delay is a round-trip delay between a first communication apparatus and a second communication apparatus.
11 . A method, comprising:
sending a first physical downlink control channel (PDCCH), wherein the first PDCCH comprises first downlink control information (DCI), the first DCI indicates a first resource, and the first resource is used to carry first uplink data;
determining a first time period or a second time period, wherein the first time period comprises a time period for sending a second PDCCH, and the second time period does not comprise the second PDCCH; and
sending the second PDCCH based on the first time period or the second time period;
wherein the second PDCCH comprises a second DCI, the second DCI indicates a second resource, and the second resource is used to carry second uplink data;
wherein determining the first time period or the second time period comprises:
determining the first time period or the second time period based on a size of a first time interval, wherein the first time interval comprises a time interval between an end moment of the first PDCCH and a start moment corresponding to the first resource; and
wherein determining the first time period or the second time period based on the size of the first time interval comprises:
determining the first time period or the second time period based on at least one of a first size relationship, a second size relationship, or both the first size relationship and the second size relationship, wherein the first size relationship is between the size of the first time interval and a first threshold, the second size relationship is between the size of the first time interval and a second threshold, and the second threshold is greater than the first threshold.
12 . The method according to claim 11 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is less than or equal to the first threshold, determining that the second time period comprises a time period from the end moment of the first PDCCH to the start moment corresponding to the first resource.
13 . The method according to claim 11 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is greater than the first threshold and less than or equal to the second threshold, determining that the first time period comprises a time period from the end moment of the first PDCCH to a start moment of a previous transmission time unit of the start moment corresponding to the first resource.
14 . The method according to claim 11 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is greater than the second threshold, determining that the first time period comprises a time period from the end moment of the first PDCCH to a start moment of a previous transmission time unit that is earlier than the start moment corresponding to the first resource.
15 . The method according to claim 14 , further comprising:
when the second DCI is received in the first time period, determining that the second time period comprises a time period from an end moment of the second PDCCH to the start moment corresponding to the first resource.
16 . A communication apparatus, comprising:
at least one memory and at least one processor, wherein the at least one memory stores a computer program or instructions, and when the at least one processor is executing the computer program or instructions, the communication apparatus is enabled to:
receive a first downlink control channel (PDCCH), wherein the first PDCCH comprises first downlink control information (DCI), the first DCI indicates a first resource, and the first resource is used to carry first uplink data;
determine a first time period or a second time period, wherein the first time period comprises a time period for monitoring a second PDCCH, and the second time period does not comprise the second PDCCH; and
monitor the second PDCCH based on the first time period or the second time period;
wherein the second PDCCH comprises a second DCI, the second DCI indicates a second resource, and the second resource is used to carry second uplink data;
wherein determining the first time period or the second time period comprises:
determining the first time period or the second time period based on a size of a first time interval, wherein the first time interval comprises a time interval between an end moment at which the first PDCCH is received and a start moment corresponding to the first resource; and
wherein determining the first time period or the second time period based on the size of the first time interval comprises:
determining the first time period or the second time period based on at least one of a first size relationship, a second size relationship, or both the first size relationship and the second size relationship, wherein the first size relationship is between the size of the first time interval and a first threshold, the second size relationship is between the size of the first time interval and a second threshold, and the second threshold is greater than the first threshold.
17 . The communication apparatus according to claim 16 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is less than or equal to the first threshold, determining that the second time period comprises a time period from the end moment of the first PDCCH to the start moment corresponding to the first resource.
18 . The communication apparatus according to claim 16 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is greater than the first threshold and less than or equal to the second threshold, determining that the first time period comprises a time period from the end moment of the first PDCCH to a start moment of a previous transmission time unit of the start moment corresponding to the first resource.
19 . The communication apparatus according to claim 16 , wherein determining the first time period or the second time period based on at least one of the first size relationship, the second size relationship, or both the first size relationship and the second size relationship, comprises:
when the first time interval is greater than the second threshold, determining that the first time period comprises a time period from the end moment of the first PDCCH to a start moment of a previous transmission time unit that is earlier than the start moment corresponding to the first resource.
20 . The communication apparatus according to claim 16 , wherein the communication apparatus is further enabled to:
when the second DCI is received in the first time period, determine that the second time period comprises a time period from an end moment of the second PDCCH to the start moment corresponding to the first resource.