Signal transmission method and device

1. A signal transmission method, performed by a second communication node and comprising:

receiving data according to a known data transmission manner within a first time length after a control channel, and receiving data by adopting data transmission manner related information notified by a control signaling after the first time length;

determining a number N of data sets comprised in data transmitted by a first communication node to the second communication node in a time unit, and determining a demodulation reference signal (DMRS) resource and a mode that the second communication node receives data according to the N value, where N is a non-negative integer.

2. The method according to claim 1 , wherein:

when N is greater than a threshold N1, the mode of receiving data comprises following features that:

M data set(s) and N-M data set(s) are time division multiplexed in the time unit;

there is a third time interval between the M data set(s) and the N-M data set(s).

3. The method according to claim 1 , wherein:

when N is greater than a threshold N1, they mode of receiving data comprises at least one of following features that:

each data set is independently channel coded; each data set carries a Cyclic Redundancy Check code (CRC); or each data set corresponds to one piece of acknowledgement/negative acknowledgement (ACK/NACK) feedback information.

4. The method according to claim 1 , wherein:

when N is greater than a threshold N1, the mode of receiving data comprises at least one of following features that:

each data set carries a DMRS that demodulates the corresponding data set; or all data sets correspond to one piece of ACK/NACK feedback information.

5. The method according to claim 1 , wherein:

when N is greater than a threshold N1, the mode of receiving data comprises following features:

obtaining configuration information of N data set(s) in one control signaling; or

obtaining a time-frequency resource occupied by the N data set(s) in one control signaling;

wherein the configuration information of the data sets comprises at least one of the following: modulation and coding scheme (MCS) information of the data sets, or time-frequency resources occupied by the data sets in the time unit.

6. The method according to claim 1 , wherein:

the control signaling includes following information:

the start position of the data;

an indication domain which is used to indicate whether the data indicated by the control signaling is delayed in a time unit after the time unit including the control signaling.

7. The method according to claim 1 , wherein:

the N value is less than or equal to the threshold N1.

8. The method according to claim 1 , wherein:

when N is less than or equal to a threshold N1, the mode for receiving data comprises following features:

M data set(s) occupying resources within a first time length after the control channel, and the N-M data set(s) occupying resources after the first time length after the control channel, wherein the M is a non-negative integer that is less than or equal to the N;

wherein the control channel is an entire control domain of a control channel in the time unit, or a control channel where the control signaling is located.

9. The method according to claim 1 , wherein:

determining the first time length by one or more of following manners:

determining the first time length according to a receiving manner of the second communication node;

determining the first time length being a value agreed with the first communication node;

obtaining the first time length by signaling information transmitted by the first communication node; or

determining the first time length according to information fed back to the first communication node by the second communication node.

10. The method according to claim 1 , wherein:

a data transmission manner comprises at least one of following: a transmitting manner that the first communication node transmits the data, or a receiving manner that the second communication node receives the data;

the data transmission manner at satisfies at least one of following characteristics:

the data transmitting manner known by the second communication node being determined according to the transmitting manner that the first communication node transmits a control signaling; or

the data receiving manner known by the second communication node being determined according to the receiving manner that the second communication node receives a control signaling.

11. The method according to claim 1 , wherein:

the data set has at least one of following characteristics that:

one data set of the N data sets corresponds to one quasi-co-location area of the data;

wherein the quasi-co-location area is one time domain resource set, and data on different time domain resources in the one time domain resource set are quasi-co-located with each other in regard to one or more channel characteristic parameters;

channel characteristic parameters correspond to the same DMRS in different data sets are different;

transmitting beams correspond to the same DMRS in different data sets are different;

receiving beams correspond to the same DMRS in different data sets are different;

the MCS level corresponds to each data set can be different; or

each of the data sets carries a DMRS.

12. The method according to claim 10 , wherein the at least one of the transmitting manner or the receiving manner comprises:

quasi-co-location (QCL) relationship between the DMRS of the data set and a reference signals.

13. The method according to claim 1 , wherein:

the control channel is a dynamic control channel;

the control signaling is in the control channel;

the control signaling is the control signaling scheduling the N data sets.

14. A signal transmission device, which is applied to a second communication node, comprising a processor and a storage medium which stores computer executable instructions;

wherein the instructions are configured to, when executed by the processor, cause the processor to perform the following steps:

receiving data according to a known data transmission manner within a first time length after a control channel, and receiving data by adopting data transmission manner related information notified by a control signaling after the first time length;

determining a number N of data sets comprised in data transmitted by a first communication node to the second communication node in a time unit, and to determining a demodulation reference signal (DMRS) resource and a mode that the second communication node receives data according to the N value, where N is a non-negative integer.

15. The method according to claim 1 , further comprising:

receiving the control signaling transmitted by the first communication node, wherein first information and second information in the control signaling are associated; the first information comprises transmitting manner information or receiving manner information; and the second information comprises at least one piece of following information: DMRS information,_ or the start position of the data triggered by the control signaling;

determining the first information and the second information according to the control signaling.

16. The method according to claim 15 , wherein:

notifying one piece of information by another piece of information comprised in the control signaling comprises:

the second information being combined with third information to determine the first information, wherein the third information comprises at least one of following information:

whether a first time interval between the start time of the data and the end time of the control channel is greater than the first time length;

whether a second time interval between an end time of the data and an end time of the control channel is greater than the first time length; or

whether the transmission manner of the data transmitted in a current time unit and the transmission manner known by the second communication node are the same, wherein the transmission manner comprising at least one of following: transmitting manner or receiving manner.

17. The method according to claim 16 , wherein:

the first time length is determined by one or more of following:

determining the first time length according to a receiving manner of the second communication node;

determining the first time length is a value agreed by the second communication node and the first communication node;

determining the first time length being obtained by signaling information transmitted by the first communication node;

determining the first time length according to information fed back to the first communication node by the second communication node.

18. The method according to claim 15 , wherein:

the at least one of the transmitting manner or the receiving manner comprises:

quasi-co-location (QCL) relationship between the DMRS of the signal and a reference signals.

19. The method according to claim 1 , wherein rate matching processing of data is performed according to at least one piece of following information:

receiving manner number information of channel quality fed back to the first communication node by the second communication node;

transmitting manner number information of the channel quality fed back to the first communication node by the second communication node;

transmitting manner information of the data notified in the control signaling;

receiving manner information of the data notified in the control signaling;

relationship information between a transmitting manner of the data notified in the control signaling and a predetermined transmitting manner before the data; or

relationship information between a receiving manner of the data notified in the control signaling and a predetermined receiving manner before the data.