Resource determination in control channel repetition
A wireless device receives a physical downlink control channel (PDCCH) that may include a downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH). In an embodiment, the PDCCH may include PDCCH candidates from search space sets, associated with control resource sets (coresets), that are configured for repetition. The wireless device may also receive a transport block via the PDSCH, where the resource block (RB) numbering of the PDSCH starts from a lowest RB of a coreset with the lowest index among the coresets.
1. A method comprising:
receiving, by a wireless device, a physical downlink control channel (PDCCH) comprising a downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH), wherein the PDCCH includes PDCCH candidates from search space sets, associated with control resource sets (coresets), configured for repetition; and
receiving a transport block via the PDSCH, wherein resource block (RB) numbering of the PDSCH starts from a lowest RB of a coreset with a lowest index among the coresets.
2. The method of claim 1 , further comprising monitoring the coresets for repetitions of the DCI.
3. The method of claim 2 wherein the monitoring comprises monitoring a plurality of search space sets that are associated with the coresets.
4. The method of claim 3 , wherein each search space set of the plurality of search space sets is associated with a respective coreset of the coreset.
5. The method of claim 1 , wherein the search space sets are a plurality of common search space sets.
6. The method of claim 1 , wherein the DCI is a DCI format 1_0.
7. The method of claim 1 , further comprising receiving one or more messages comprising one or more configuration parameters.
8. The method of claim 1 , wherein the lowest RB of the coreset is an RB with a lowest frequency among one or more frequencies of one or more RBs of the coreset.
9. The method of claim 1 , wherein the lowest RB of the coreset is an RB with a lowest starting frequency among one or more starting frequencies of one or more RBs of the coreset.
10. The method of claim 1 , wherein the DCI comprises a resource indication field with a value.
11. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive a physical downlink control channel (PDCCH) comprising a downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH), wherein the PDCCH includes PDCCH candidates from search space sets, associated with control resource sets (coresets), configured for repetition; and
receive a transport block via the PDSCH, wherein resource block (RB) numbering of the PDSCH starts from a lowest RB of a coreset with a lowest index among the coresets.
12. The wireless device of claim 11 , wherein the instructions further cause the wireless device to monitor the coresets for repetitions of the DCI.
13. The wireless device of claim 12 , wherein the monitoring comprises monitoring a plurality of search space sets that are associated with the coresets.
14. The wireless device of claim 13 , wherein each search space set of the plurality of search space sets is associated with a respective coreset of the coreset.
15. The wireless device of claim 11 , wherein the search space sets are a plurality of common search space sets.
16. The wireless device of claim 11 , wherein the DCI is a DCI format 1_0.
17. The wireless device of claim 11 , wherein the instructions further cause the wireless device to receive one or more messages comprising one or more configuration parameters.
18. The wireless device of claim 11 , wherein the lowest RB of the coreset is an RB with a lowest frequency among one or more frequencies of one or more RBs of the coreset.
19. The wireless device of claim 11 , wherein the lowest RB of the coreset is an RB with a lowest starting frequency among one or more starting frequencies of one or more RBs of the coreset.
20. A system comprising:
a wireless device comprising: one or more first processors and first memory storing first instructions that, when executed by the one or more first processors, cause the wireless device to:
receive a physical downlink control channel (PDCCH) comprising a downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH), wherein the PDCCH includes PDCCH candidates from search space sets, associated with control resource sets (coresets), configured for repetition; and
receive a transport block via the PDSCH, wherein resource block (RB) numbering of the PDSCH starts from a lowest RB of a coreset with a lowest index among the coresets; and
a base station comprising: one or more second processors and first memory storing second instructions that, when executed by the one or more second processors, cause the base station to:
transmit the physical downlink control channel (PDCCH) comprising the downlink control information (DCI); and
transmit the transport block via the PDSCH.