Methods and apparatus for transmitting information on two PDSCHs
This application provides an information transmission method and apparatus. The solution includes: determining, by a terminal device, at least two transport blocks; and decoding, by the terminal device, first information transmitted by using the at least two transport blocks, where the first information includes at least one of control information and data. This solution is applicable to a scenario in which same information or information with a same information source is transmitted by using a plurality of transport blocks.
1. A method, comprising:
receiving, by a terminal device, indication information indicating two combination identifiers respectively corresponding to two physical downlink shared channels (PDSCHs);
determining, by the terminal device, the two PDSCHS based on the two combination identifiers, wherein same information is carried by each of the two PDSCHs, the two PDSCHs are transmitted on same time domain resources and on different frequency domain resources, and redundancy versions (RVs) of the two PDSCHs are different; and
decoding, by the terminal device, first information transmitted using the two PDSCHs, wherein the first information comprises control information or data, and wherein decoding the first information transmitted using the two PDSCHs comprises:
performing, by the terminal device, decoding on at least one PDSCH of the two PDSCHs or combined decoding on the two PDSCHs, to obtain the first information.
2. The method according to claim 1 , wherein the indication information is carried in downlink control information (DCI), and the DCI indicates at least one of the time domain resources or the frequency domain resources of the two PDSCHs.
3. The method according to claim 1 , wherein the indication information further indicates a parameter value of at least one parameter, wherein the two PDSCHs correspond to a same parameter value of the at least one parameter, and the at least one parameter comprises:
a bandwidth part (BWP);
a network identifier;
a cell index;
a hybrid automatic repeat request (HARQ) process number;
a new data indicator (NDI); or
an HARQ-ACK resource.
4. The method according to claim 1 , further comprising:
sending, by the terminal device, first feedback information, wherein the first feedback information indicates whether the terminal device has correctly decoded the first information transmitted by the two PDSCHs, and a size of the first feedback information is 1 bit.
5. The method according to claim 1 , wherein before determining, by the terminal device, the two PDSCHs, the method further comprises:
receiving, by the terminal device, first configuration information, wherein the first configuration information is usable to configure the terminal device to perform combined decoding on two PDSCHs.
6. An apparatus, comprising:
one or more processors, and
a non-transitory storage medium in communication with the one or more processors, the non-transitory storage medium storing program instructions, wherein, when executed by the one or more processors, the program instructions cause the apparatus to:
receive indication information indicating two combination identifiers respectively corresponding to two physical downlink shared channels (PDSCHs);
determine the two PDSCHS based on the two combination identifiers, wherein same information is carried by each of the two PDSCHs, the two PDSCHs are transmitted on same time domain resources and on different frequency domain resources, and redundancy versions (RVs) of the two PDSCHs are different; and
decode first information transmitted using the two PDSCHs, wherein the first information comprises control information or data, and wherein decoding the first information comprises:
performing decoding on at least one PDSCH of the two PDSCHs or combined decoding on the two PDSCHs, to obtain the first information.
7. The apparatus according to claim 6 , wherein the indication information is carried in downlink control information (DCI), and the DCI indicates at least one of the time domain resources or the frequency domain resources of the two PDSCHs.
8. The apparatus according to claim 6 , wherein the indication information further indicates a parameter value of at least one parameter, wherein the two PDSCHs correspond to a same parameter value of the at least one parameter, and the at least one parameter comprises:
a bandwidth part (BWP);
a network identifier;
a cell index;
a hybrid automatic repeat request (HARQ) process number;
a new data indicator (NDI); or
an HARQ-ACK resource.
9. The apparatus according to claim 6 , wherein, when executed by the one or more processors, the program instructions further cause the apparatus to:
send first feedback information, wherein the first feedback information indicates that the apparatus has correctly decoded or incorrectly decoded the first information transmitted by the two PDSCHs, and a size of the first feedback information is 1 bit.
10. The apparatus according to claim 6 , wherein, when executed by the one or more processors, the program instructions further cause the apparatus to:
before determining the two PDSCHs, receive first configuration information, wherein the first configuration information configures the apparatus to perform combined decoding on two PDSCHs.
11. An apparatus, comprising:
one or more processors, and
a non-transitory storage medium in communication with the one or more processors, the non-transitory storage medium storing program instructions, wherein, when executed by the one or more processors, the program instructions cause the apparatus to:
send indication information to a terminal device, wherein the indication information indicates two combination identifiers respectively corresponding to two physical downlink shared channels (PDSCHs);
generate first information, wherein the first information comprises data or control information; and
send the first information to a terminal device using the two PDSCHs indicated by the two combination identifiers, wherein the first information is carried by each of the two PDSCHs, wherein the two PDSCHs are transmitted on same time domain resources and on different frequency domain resources, and redundancy versions (RVs) of the two PDSCHs are different.
12. The apparatus according to claim 11 , wherein, when executed by the one or more processors, the program instructions further cause the apparatus to:
receive first feedback information from the terminal device, wherein the first feedback information indicates whether the terminal device has correctly decoded the first information transmitted by the two PDSCHs, and the size of the first feedback information is 1 bit.
13. The apparatus according to claim 11 , wherein, when executed by the one or more processors, the program instructions further cause the apparatus to:
send first configuration information to the terminal device, wherein the first configuration information is usable to configure the terminal device to perform combined decoding on the two PDSCHs.
14. The apparatus according to claim 11 , wherein the indication information is carried in downlink control information (DCI), and the DCI indicates at least one of the time domain resources or the frequency domain resources of the two PDSCHs.
15. The apparatus according to claim 11 , wherein the indication information further indicates a parameter value of at least one parameter, wherein the two PDSCHs correspond to a same parameter value of the at least one parameter, and the at least one parameter comprises:
a bandwidth part (BWP);
a network identifier;
a cell index;
a hybrid automatic repeat request (HARQ) process number;
a new data indicator (NDI); or
an HARQ-ACK resource.