Multi-cell downlink control information
A wireless device may receive downlink control information (DCI) that includes a cell index, wherein the cell index indicates one or more cells and a channel state information (CSI) request. The wireless device may also determine a cell to transmit a CSI based on the CSI request and the cell index of the DCI. The wireless device may also transmit a CSI via the cell.
1. 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 downlink control information (DCI) comprising:
a cell index indicating a first plurality of cells of a plurality of cells;
resource assignments for the first plurality of cells; and
a channel state information (CSI) request;
determine a cell, of the first plurality of cells, to transmit a CSI based on the CSI request and the cell index; and
transmit, via the cell, the CSI.
2. The wireless device of claim 1 , wherein the first plurality of cells comprises a first cell and second cell.
3. The wireless device of claim 2 , wherein the resource assignments comprise:
a first frequency domain resource assignment for the first cell; and
a second frequency domain resource assignment for the second cell.
4. The wireless device of claim 3 , wherein the DCI schedules:
a first transport block via the first cell based on the first frequency domain resource assignment being set to a first value different from a predefined value; and
a second transport block via the second cell based on the second frequency domain resource assignment being set to a second value different from the predefined value.
5. The wireless device of claim 4 , wherein the instructions further cause the wireless device to transmit:
the first transport block via the first cell; and
the second transport block via the second cell.
6. The wireless device of claim 5 , wherein the instructions further cause the wireless device to transmit:
the first transport block via one or more first frequency resources indicated by the first value; and
the second transport block via one or more second frequency resources indicated by the second value.
7. The wireless device of claim 4 , wherein the predefined value is zero or one.
8. The wireless device of claim 1 , wherein the cell index further indicates the first plurality of cells with the resource assignments for uplink transmissions via the first plurality of cells.
9. 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, downlink control information (DCI) comprising:
a cell index indicating a first plurality of cells of a plurality of cells;
resource assignments for the first plurality of cells; and
a channel state information (CSI) request, wherein the DCI indicates:
a cell, of the first plurality of cells, for the wireless device to transmit a CSI based on the CSI request and the cell index; and
receive, via the cell, the CSI.
10. The base station of claim 9 , wherein the first plurality of cells comprises a first cell and second cell.
11. The base station of claim 10 , wherein the resource assignments comprise:
a first frequency domain resource assignment for the first cell; and
a second frequency domain resource assignment for the second cell.
12. The base station of claim 11 , wherein the DCI schedules:
a first transport block via the first cell based on the first frequency domain resource assignment being set to a first value different from a predefined value; and
a second transport block via the second cell based on the second frequency domain resource assignment being set to a second value different from the predefined value.
13. The base station of claim 12 , wherein the instructions further cause the base station to receive:
the first transport block via the first cell; and
the second transport block via the second cell.
14. The base station of claim 13 , wherein the instructions further cause the base station to receive:
the first transport block via one or more first frequency resources indicated by the first value; and
the second transport block via one or more second frequency resources indicated by the second value.
15. The base station of claim 12 , wherein the predefined value is zero or one.
16. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:
receive downlink control information (DCI) comprising:
a cell index indicating a first plurality of cells of a plurality of cells;
resource assignments for the first plurality of cells; and
a channel state information (CSI) request;
determine a cell, of the first plurality of cells, to transmit a CSI based on the CSI request and the cell index; and
transmit, via the cell, the CSI.
17. The non-transitory computer-readable medium of claim 16 , wherein the first plurality of cells comprises a first cell and second cell.
18. The non-transitory computer-readable medium of claim 17 , wherein the resource assignments comprise:
a first frequency domain resource assignment for the first cell; and
a second frequency domain resource assignment for the second cell.
19. The non-transitory computer-readable medium of claim 18 , wherein the DCI schedules:
a first transport block via the first cell based on the first frequency domain resource assignment being set to a first value different from a predefined value; and
a second transport block via the second cell based on the second frequency domain resource assignment being set to a second value different from the predefined value.
20. The non-transitory computer-readable medium of claim 19 , wherein the instructions further cause the wireless device to transmit:
the first transport block via the first cell; and
the second transport block via the second cell.
21. The non-transitory computer-readable medium of claim 20 , wherein the instructions further cause the wireless device to transmit:
the first transport block via one or more first frequency resources indicated by the first value; and
the second transport block via one or more second frequency resources indicated by the second value.