Downlink control information for supporting multiple services
A wireless device receives one or more radio resource control messages including configuration parameters, of a cell including a first downlink control information (DCI) format and a second DCI format, for monitoring on a first search space, and the second DCI format for monitoring on a second search space. Based on the first DCI format, a first DCI size of the second DCI format for the first search space is determined. Based on the second DCI format, a second DCI size of the second DCI format in the second search space is determined. The wireless device monitors for a first DCI on the first search space based on the first DCI size. The first DCI is based on the first DCI format or the second DCI format. The wireless device monitors for a second DCI on the second search space based on the second DCI size.
1. A method comprising:
transmitting, by a base station to a wireless device, one or more radio resource control messages comprising configuration parameters, of a cell, comprising:
a first downlink control information (DCI) format and a second DCI format, associated with a first search space; and
the second DCI format associated with a second search space;
transmitting, via the first search space and based on a first DCI size of the first DCI format associated with the first search space, a first DCI with the second DCI format; and
transmitting, via the second search space and based on a second DCI size of the second DCI format associated with the second search space, a second DCI with the second DCI format.
2. The method of claim 1 , wherein the configuration parameters are configured for a bandwidth part of the cell, and wherein the first search space and the second search space are configured for the bandwidth part of the cell.
3. The method of claim 2 , wherein the first DCI format is used for scheduling data for the cell or is used for scheduling a group common control, and wherein the first DCI is scrambled with a first radio network temporary identifier (RNTI).
4. The method of claim 3 , wherein the first RNTI is at least one of:
a cell RNTI (C-RNTI);
a configured scheduling RNTI (CS-RNTI);
a modulation and coding scheme C-RNTI (MCS-C-RNTI);
a transmission power control physical uplink control channel RNTI (TPC-PUCCH-RNTI);
a transmission power control physical uplink shared channel RNTI (TPC-PUSCH-RNTI);
a system information RNTI (SI-RNTI);
a paging RNTI (P-RNTI); or
a semi-persistent channel state information RNTI (SP-CSI-RNTI).
5. The method of claim 2 , wherein the second DCI format is configured for scheduling data for the cell, and wherein the second DCI is scrambled with a second RNTI.
6. The method of claim 5 , wherein the second RNTI does not comprise at least one of:
a C-RNTI;
a CS-RNTI;
a MCS-C-RNTI;
a TPC-PUCCH-RNTI;
a TPC-PUSCH-RNTI;
a SI-RNTI;
a P-RNTI; or
a SP-CSI-RNTI.
7. The method of claim 1 , further comprising:
adding zeros to the first DCI with the second DCI format until the first DCI with the second DCI format has the first DCI size, in response to a size of the second DCI format being smaller than a DCI size of the first DCI format.
8. The method of claim 1 , further comprising:
truncating bits of the first DCI size with the second DCI format until the first DCI with the second DCI format has the first DCI size, in response to a size of the second DCI format being larger than a DCI size of the first DCI format.
9. The method of claim 1 , further comprising determining the second DCI size of the second DCI format as a DCI size of the second DCI format.
10. The method of claim 1 , wherein the first search space is a common search space, and wherein the second search space is a wireless device specific search space.
11. A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit, to a wireless device, one or more radio resource control messages comprising configuration parameters, of a cell, comprising:
a first downlink control information (DCI) format and a second DCI format, associated with a first search space; and
the second DCI format associated with a second search space;
transmit, via the first search space and based on a first DCI size of the first DCI format associated with the first search space, a first DCI with the second DCI format; and
transmit, via the second search space and based on a second DCI size of the second DCI format associated with the second search space, a second DCI with the second DCI format.
12. The base station of claim 11 , wherein the configuration parameters are configured for a bandwidth part of the cell, and wherein the first search space and the second search space are configured for the bandwidth part of the cell.
13. The base station of claim 12 , wherein the first DCI format is used for scheduling data for the cell or is used for scheduling a group common control, and wherein the first DCI is scrambled with a first radio network temporary identifier (RNTI).
14. The base station of claim 13 , wherein the first RNTI is at least one of:
a C-RNTI;
a CS-RNTI;
a MCS-C-RNTI;
a TPC-PUCCH-RNTI;
a TPC-PUSCH-RNTI;
a SI-RNTI;
a P-RNTI; or
a SP-CSI-RNTI.
15. The base station of claim 12 , wherein the second DCI format is configured for scheduling data for the cell, and wherein the second DCI is scrambled with a second RNTI.
16. The base station of claim 15 , wherein the second RNTI does not comprise at least one of:
a C-RNTI;
a CS-RNTI;
a MCS-C-RNTI;
a TPC-PUCCH-RNTI;
a TPC-PUSCH-RNTI;
a SI-RNTI;
a P-RNTI; or
a SP-CSI-RNTI.
17. The base station of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the base station to add zeros to the first DCI with the second DCI format until the first DCI with the second DCI format has the first DCI size, in response to a size of the second DCI format being smaller than a DCI size of the first DCI format.
18. The base station of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the base station to truncate bits of the first DCI size with the second DCI format until the first DCI with the second DCI format has the first DCI size, in response to a size of the second DCI format being larger than a DCI size of the first DCI format.
19. The base station of claim 11 , wherein the first search space is a common search space, and wherein the second search space is a wireless device specific search space.
20. A system comprising:
a wireless device; and
a base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit, to the wireless device, one or more radio resource control messages comprising configuration parameters, of a cell, comprising:
a first downlink control information (DCI) format and a second DCI format, associated with a first search space; and
the second DCI format associated with a second search space;
transmit, to the wireless device via the first search space and based on a first DCI size of the first DCI format associated with the first search space, a first DCI with the second DCI format; and
transmit, to the wireless device via the second search space and based on a second DCI size of the second DCI format associated with the second search space, a second DCI with the second DCI format.