| CPC H04L 1/1812 (2013.01) [H04L 5/0096 (2013.01); H04W 72/02 (2013.01); H04W 72/0453 (2013.01); H04W 72/56 (2023.01)] | 18 Claims |

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1. A data transmission method, comprising:
determining, by a first device according to states of hybrid automatic repeat request (HARQ) processes corresponding to multiple available resources respectively, a target resource from the multiple available resources, wherein the multiple available resources are multiple configured grant resources or multiple dynamic grant resources; and
sending, by the first device, data to a second device on the target resource;
wherein before the determining, by the first device according to the states of HARQ processes corresponding to the multiple available resources respectively, the target resource from the multiple available resources, the method further comprises:
acquiring, by the first device, second configuration information, wherein the second configuration information comprises an attribute of at least one logical channel; wherein the attribute of each logical channel is any one of the following: enable HARQ feedback function, disable HARQ feedback function, enable or disable HARQ feedback function;
wherein a state of a HARQ process corresponding to the target resource matches with an attribute of a logical channel to which the data belongs;
wherein the second configuration information further comprises a priority of the at least one logical channel;
the determining, by the first device according to the states of HARQ processes corresponding to the multiple available resources respectively, the target resource from the multiple available resources comprises:
determining, by the first device according to at least one of the attribute and the priority of the at least one logical channel, and the states of the HARQ processes corresponding to the multiple available resources respectively, the target resource from the multiple available resources.
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