Methods and devices for transmitting and receiving data, communication apparatus and system, and storage medium
A transmitting and receiving point (TRP) divides data scheduled by one downlink control information (DCI) into N data parts, and transmits the N data parts to a receiving side, where N≥1. A value of N and whether the N data parts have a correlation in a case of N>1 are determined by at least one of following scheduling information: a transmission configuration indicator (TCI) field, a demodulation reference signal (DMRS) port indicator, a modulation and coding scheme (MCS), a redundancy version (RV) or a new data indicator (NDI). After receiving the N data parts sent by the TRP, the receiving side determines whether the N data parts have the correlation according to at least one of the TCI, the DMRS port indicator, the MCS, the RV, or the NDI.
1. A data sending method, comprising:
transmitting data scheduled by one downlink control information (DCI) to a receiving side, wherein the data comprises N data parts with N≥1; and
notifying the receiving side of whether the N data parts have the correlation in a case of N>1 by using a demodulation reference signal (DMRS) port indicator;
wherein a value of N and whether the N data parts have a correlation in a case of N>1 are determined by a transmission configuration indicator (TCI) field, and the DMRS port indicator; and
wherein each data part of the N data parts corresponds at least to one DMRS port group, one transport block TB, and one physical downlink shared channel PDSCH.
2. The data sending method of claim 1 , wherein the correlation is that one data part is repeated with another data part.
3. The data sending method of claim 1 , wherein the value of N is equal to R, and R is a number of TCIs corresponding to the TCI field.
4. The data sending method of claim 1 , wherein in a case where the DMRS port indicator characterizes that the N data parts have the correlation, the N data parts correspond to N TBs.
5. The data sending method of claim 4 , wherein a predefined relationship is satisfied between redundant versions (RVs) of the N TBs.
6. The data sending method of claim 5 , a relationship between RVs of a first TB of the N TBs and a second TB of the N TBs is be predefined as:
when RV of first TB is 0, RV of second TB is 2;
when RV of first TB is 2, RV of second TB is 3;
when RV of first TB is 3, RV of second TB is 1; and
when RV of first TB is 1, RV of second TB is 0.
7. A data receiving method, comprising:
receiving data sent by a transmitting and receiving point (TRP), wherein the data comprises N data parts with N≥1; and
determining whether the N data parts have the correlation in a case of N>1 according to a demodulation reference signal (DMRS) port indicator;
wherein a value of N and whether the N data parts have a correlation in a case of N>1 are determined by a transmission configuration indicator (TCI) field, and the DMRS port indicator; and
wherein each data part of the N data parts corresponds at least to one DMRS port group, one transport block (TB), and one physical downlink shared channel (PDSCH).
8. The data receiving method of claim 7 , wherein the correlation is that one data part is repeated with another data part.
9. The data receiving method of claim 7 , wherein the value of N is R, and R is a number of TCIs corresponding to the TCI field.
10. The data receiving method of claim 7 , wherein in a case where the DMRS port indicator characterizes that the N data parts have the correlation, the N data parts correspond to N TBs.
11. The data receiving method of claim 10 , wherein a predefined relationship is satisfied between redundant versions (RVs) of the N TBs.
12. The data sending method of claim 11 , wherein a relationship between RVs of a first TB of the N TBs and a second TB of the N TBs is be predefined as:
when RV of first TB is 0, RV of second TB is 2;
when RV of first TB is 2, RV of second TB is 3;
when RV of first TB is 3, RV of second TB is 1; and
when RV of first TB is 1, RV of second TB is 0.
13. A communication device, comprising a processor and a memory, wherein the processor is configured to execute a data sending program stored in the memory to implement the steps of:
transmitting data scheduled by one downlink control information (DCI), to a receiving side, wherein the data comprises N data parts with N≥1; and
notifying the receiving side of whether the N data parts have the correlation in a case of N>1 by using a demodulation reference signal (DMRS) port indicator;
wherein a value of N and whether the N data parts have a correlation in a case of N>1 are determined by a transmission configuration indicator (TCI), field, and the DMRS port indicator; and
wherein each data part of the N data parts corresponds at least to one DMRS port group, one transport block (TB), and one physical downlink shared channel (PDSCH).
14. The communication device of claim 13 , wherein the correlation is that one data part is repeated with another data part.
15. The communication device of claim 13 , wherein the value of N is equal to R, and R is a number of TCIs corresponding to the TCI field.
16. The communication device of claim 13 , wherein in a case where the DMRS port indicator characterizes that the N data parts have the correlation, the N data parts correspond to N TBs.
17. The communication device of claim 16 , wherein a predefined relationship is satisfied between redundancy versions (RVs) of the N TBs.
18. The communication device of claim 17 , wherein a relationship between RVs of a first TB of the N TBs and a second TB of the N TBs is be predefined as:
when RV of first TB is 0, RV of second TB is 2;
when RV of first TB is 2, RV of second TB is 3;
when RV of first TB is 3, RV of second TB is 1; and
when RV of first TB is 1, RV of second TB is 0.
19. A communication device, comprising a processor and a memory, wherein the processor is configured to execute a data receiving program stored in the memory to implement the steps of:
receiving data sent by a transmitting and receiving point (TRP), wherein the data comprises N data parts with N≥1; and
determining whether the N data parts have the correlation in a case of N>1 according to a demodulation reference signal (DMRS) port indicator;
wherein a value of N and whether the N data parts have a correlation in a case of N>1 are determined by a transmission configuration indicator (TCI), field, and the DMRS port indicator; and
wherein each data part of the N data parts corresponds at least to one DMRS port group, one transport block (TB), and one physical downlink shared channel (PDSCH).
20. The communication device of claim 19 , wherein the correlation is that one data part is repeated with another data part.
21. The communication device of claim 19 , wherein the value of N is R, and R is a number of TCIs corresponding to the TCI field.
22. The communication device of claim 19 , wherein in a case where the DMRS port indicator characterizes that the N data parts have the correlation, the N data parts correspond to N TBs.
23. The communication device of claim 22 , wherein a predefined relationship is satisfied between redundancy versions RVs of the N TBs.
24. The communication device of claim 23 , wherein a relationship between RVs of a first TB of the N TBs and a second TB of the N TBs is be predefined as:
when RV of first TB is 0, RV of second TB is 2;
when RV of first TB is 2, RV of second TB is 3;
when RV of first TB is 3, RV of second TB is 1; and
when RV of first TB is 1, RV of second TB is 0.