Multi-transmission and reception point (TRP) redundancy and soft combining with reduced latency
A method, system and apparatus are disclosed. According to one aspect of the disclosure, a network node configured to communicate with a wireless device is provided. The network node includes processing circuitry configured to: cause a first physical downlink control channel, PDCCH, transmission starting at a first symbol and cause a second PDCCH transmission starting at a second symbol where the first PDCCH transmission is configured to schedule a first physical uplink shared channel, PUSCH, transmission ending at a third symbol for a transport block and the second PDCCH transmission configured to schedule a second PUSCH transmission starting at a fourth symbol for the transport block, where the second symbol occurs before the third symbol, the third symbol occurs later in time than the first symbol and the fourth symbol occurs later in time than that second symbol.
1. A network node configured to communicate with a wireless device, the network node comprising:
processing circuitry configured to:
cause a first physical downlink control channel (PDCCH) transmission starting at a first symbol; and
cause a second PDCCH transmission starting at a second symbol, the first PDCCH transmission configured to schedule a first physical uplink shared channel (PUSCH) transmission ending at a third symbol for a transport block, the second PDCCH transmission configured to schedule a second PUSCH transmission starting at a fourth symbol for the transport block;
the second symbol occurring before the third symbol;
the third symbol occurring later in time than the first symbol; and
the fourth symbol occurring later in time than the second symbol.
2. The network node of claim 1 , wherein the first symbol occurs one of before and at the same time as the second symbol.
3. The network node of claim 1 , wherein a starting symbol and the third symbol of the first PUSCH transmission precedes the fourth symbol.
4. The network node of claim 1 , wherein the first PUSCH transmission is scheduled in a different slot than a slot where the second PUSCH transmission is scheduled.
5. The network node of claim 1 , wherein the second PUSCH transmission is scheduled to begin in a next symbol after a last symbol of the first PUSCH transmission.
6. The network node of claim 1 , wherein the first PUSCH transmission at least partially overlaps in time with the second PUSCH transmission.
7. The network node of claim 1 , wherein the second PUSCH transmission associated with the second PDCCH transmission is a retransmission of data of the first PUSCH transmission.
8. The network node of claim 1 , wherein the first and second PUSCH transmissions are positioned in a same slot.
9. The network node of claim 1 , wherein the first PDCCH transmission occurs in a first set of symbols; and
the second PDCCH transmission occurs in a second set of symbols.
10. The network node of claim 9 , wherein the first set of symbols one of at least partially overlaps in time and fails to overlap in time with the second set of symbols.
11. The network node of claim 1 , wherein the processing circuitry is further configured to:
configure the wireless device with a first control resource set (CORESET) pool and a second CORESET pool different from the first CORESET pool, each CORESET pool including at least one respective CORESET;
the first PDCCH transmission carrying a first downlink control information (DCI) and being transmitted in a CORESET of the first CORESET pool; and
the second PDCCH transmission carrying a second downlink control information, DCI and being transmitted in a CORESET of the second CORESET pool.
12. The network node of claim 1 , wherein the first PUSCH transmission corresponds to a different redundancy version than a redundancy version of the second PUSCH transmission.
13. The network node of claim 1 , wherein at least one of the first PUSCH transmission and second PUSCH transmission is scheduled by a configured grant.
14. The network node of claim 1 , wherein the first PDCCH transmission includes a first sounding reference signal indicator (SRI) and the second PDCCH transmission includes a second SRI, the first SRI being different from the second SRI.
15. The network node of claim 14 , wherein a spatial relation for the first PUSCH transmission is provided by the first SRI and a spatial relation for the second PUSCH transmission is provided by the second SRI.
16. The network node of claim 15 , wherein the configured grant is configured with a periodicity and a repetition pattern within each period, the repetition pattern indicating whether a PUSCH transmission of the configured grant is associated with one of the first SRI and second SRI.
17. The network node of claim 1 , wherein the first PUSCH transmission is received on a first Transmission and Reception Point (TRP) associated with the first SRI and the second PUSCH transmission is received on a second TRP associated with the second SRI.
18. The network node of claim 1 , wherein the first PUSCH transmission and the second PUSCH transmission are scheduled with a same number of spatial layers.
19. A method implemented by a network node that is configured to communicate with a wireless device, the method comprising:
causing a first physical downlink control channel (PDCCH) transmission starting at a first symbol; and
causing a second PDCCH transmission starting at a second symbol, the first PDCCH transmission configured to schedule a first physical uplink shared channel (PUSCH) transmission ending at a third symbol for a transport block, the second PDCCH transmission configured to schedule a second PUSCH transmission starting at a fourth symbol for the transport block;
the second symbol occurring before the third symbol;
the third symbol occurring later in time than the first symbol; and
the fourth symbol occurring later in time than that second symbol.
20. The method of claim 19 , wherein the first symbol occurs one of before and at the same time as the second symbol.
21. The method of claim 19 , wherein a starting symbol and the third symbol of the first PUSCH transmission precedes the fourth symbol.
22. The method of claim 19 , wherein the first PUSCH transmission is scheduled in a different slot than a slot where the second PUSCH transmission is scheduled.
23. The method of claim 19 , wherein the second PUSCH transmission is scheduled to begin in a next symbol after a last symbol of the first PUSCH transmission.
24. The method of claim 19 , wherein the first PUSCH transmission at least partially overlaps in time with the second PUSCH transmission.
25. The method of claim 19 , wherein the second PUSCH transmission associated with the second PDCCH transmission is a retransmission of data of the first PUSCH transmission.
26. The method of claim 19 , wherein the first and second PUSCH transmissions are positioned in a same slot.