Multiple active bandwidth parts
Bandwidth parts (BWPs) and other resources for wireless communications are described. A wireless device may use a BWP control procedure and/or a BWP timer management procedure for activating, deactivating, and/or switching BWPs, for example, using multiple active BWPs. A base station may send information comprising one or more fields indicating an action associated with a BWP, for example, if multiple active BWPs are supported. A wireless device may control a first BWP inactivity timer associated with a first active BWP, for example, based on activating, deactivating, and/or switching a second BWP.
1. A method comprising:
receiving, by a wireless device, one or more messages indicating a first bandwidth part (BWP) of a cell and a second BWP of the cell;
activating the first BWP as a primary active BWP of the cell and the second BWP as a secondary active BWP of the cell;
selecting the first BWP, based on the first BWP being the primary active BWP, to monitor a downlink control channel;
monitoring the downlink control channel using a first search space set associated with the primary active BWP; and
based on receiving, via the primary active BWP, downlink control information (DCI) comprising a first field indicating the secondary active BWP and a second field indicating a radio resource assignment for the secondary active BWP:
receiving, via the radio resource assignment, one or more transport blocks.
2. The method of claim 1 , further comprising:
receiving second DCI comprising a third field indicating the secondary active BWP and a fourth field indicating a second radio resource assignment for the secondary active BWP; and
sending, via the second radio resource assignment, one or more second transport blocks.
3. The method of claim 1 , further comprising:
based on receiving second DCI comprising a third field indicating the secondary active BWP and a fourth field indicating deactivation of the secondary active BWP:
deactivating the secondary active BWP of the cell.
4. The method of claim 1 , wherein a second search space associated with a second downlink control channel of the secondary active BWP is not monitored.
5. The method of claim 1 , wherein the second field comprises at least one of: a time resource allocation indicator or a frequency resource allocation indicator.
6. The method of claim 1 , wherein the DCI is based on a DCI format different from DCI format 1_1 and different from DCI format 0_1.
7. The method of claim 1 , wherein the wireless device maintains an active state of the primary active BWP of the cell when receiving the one or more transport blocks via the radio resource assignment of the secondary active BWP of the cell.
8. The method of claim 1 , wherein the second field of the DCI is different from a time resource allocation indicator or a frequency resource allocation indicator.
9. 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 one or more messages indicating a first bandwidth part (BWP) of a cell and a second BWP of the cell;
activate the first BWP as a primary active BWP of the cell and the second BWP as a secondary active BWP of the cell;
select the first BWP, based on the first BWP being the primary active BWP, to monitor a downlink control channel;
monitor the downlink control channel using a first search space set associated with the primary active BWP; and
based on receiving, via the primary active BWP, downlink control information (DCI) comprising a first field indicating the secondary active BWP and a second field indicating a radio resource assignment for the secondary active BWP:
receive, via the radio resource assignment, one or more transport blocks.
10. The wireless device of claim 9 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
receive second DCI comprising a third field indicating the secondary active BWP and a fourth field indicating a second radio resource assignment for the secondary active BWP; and
send, via the second radio resource assignment, one or more second transport blocks.
11. The wireless device of claim 9 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
deactivate the secondary active BWP of the cell based on receiving second DCI comprising a third field indicating the secondary active BWP and a fourth field indicating deactivation of the secondary active BWP.
12. The wireless device of claim 9 , wherein a second search space associated with a second downlink control channel of the secondary active BWP is not monitored.
13. The wireless device of claim 9 , wherein the second field comprises at least one of: a time resource allocation indicator or a frequency resource allocation indicator.
14. The wireless device of claim 9 , wherein the DCI is based on a DCI format different from DCI format 1_1 and different from DCI format 0_1.
15. The wireless device of claim 9 , wherein the instructions cause the wireless device to maintain an active state of the primary active BWP of the cell when receiving the one or more transport blocks via the radio resource assignment of the secondary active BWP of the cell.
16. The wireless device of claim 9 , wherein the second field of the DCI is different from a time resource allocation indicator or a frequency resource allocation indicator.
17. A non-transitory computer-readable medium storing instructions that, when executed, configure a wireless device to:
receive one or more messages indicating a first bandwidth part (BWP) of a cell and a second BWP of the cell;
activate the first BWP as a primary active BWP of the cell and the second BWP as a secondary active BWP of the cell;
select the first BWP, based on the first BWP being the primary active BWP, to monitor a downlink control channel;
monitor the downlink control channel using a first search space set associated with the primary active BWP; and
based on receiving, via the primary active BWP, downlink control information (DCI) comprising a first field indicating the secondary active BWP and a second field indicating a radio resource assignment for the secondary active BWP:
receive, via the radio resource assignment, one or more transport blocks.
18. The non-transitory computer-readable medium of claim 17 , wherein the instructions, when executed, configure the wireless device to:
receive second DCI comprising a third field indicating the secondary active BWP and a fourth field indicating a second radio resource assignment for the secondary active BWP; and
send, via the second radio resource assignment, one or more second transport blocks.
19. The non-transitory computer-readable medium of claim 17 , wherein the instructions, when executed, configure the wireless device to:
deactivate the secondary active BWP of the cell based on receiving second DCI comprising a third field indicating the secondary active BWP and a fourth field indicating deactivation of the secondary active BWP.
20. The non-transitory computer-readable medium of claim 17 , wherein a second search space associated with a second downlink control channel of the secondary active BWP is not monitored.
21. The non-transitory computer-readable medium of claim 17 , wherein the second field comprises at least one of: a time resource allocation indicator or a frequency resource allocation indicator.
22. The non-transitory computer-readable medium of claim 17 , wherein the DCI is based on a DCI format different from DCI format 1_1 and different from DCI format 0_1.
23. The non-transitory computer-readable medium of claim 17 , wherein the instructions configure the wireless device to maintain an active state of the primary active BWP of the cell while receiving the one or more transport blocks via the radio resource assignment of the secondary active BWP of the cell.
24. The non-transitory computer-readable medium of claim 17 , wherein the second field of the DCI is different from a time resource allocation indicator or a frequency resource allocation indicator.
25. The method of claim 1 , wherein the DCI comprises a third field indicating at least one of:
a carrier indicator;
an identifier for a DCI format;
a first field indicating a frequency domain resource assignment;
a second field indicating a time domain resource assignment;
a transmit power control (TPC); or
a feedback timing indicator.
26. The wireless device of claim 9 , wherein the DCI comprises a third field indicating at least one of:
a carrier indicator;
an identifier for a DCI format;
a first field indicating a frequency domain resource assignment;
a second field indicating a time domain resource assignment;
a transmit power control (TPC); or
a feedback timing indicator.
27. The non-transitory computer-readable medium of claim 17 , wherein the DCI comprises a third field indicating at least one of:
a carrier indicator;
an identifier for a DCI format;
a first field indicating a frequency domain resource assignment;
a second field indicating a time domain resource assignment;
a transmit power control (TPC); or
a feedback timing indicator.
28. A system comprising:
a wireless device; and
a base station,
wherein the base station is configured to:
send one or more messages indicating a first bandwidth part (BWP) of a cell and a second BWP of the cell;
activate the first BWP as a primary active BWP of the cell and the second BWP as a secondary active BWP of the cell;
send, via the primary active BWP, downlink control information (DCI) comprising a first field indicating the secondary active BWP and a second field indicating a radio resource assignment for the secondary active BWP; and
send, via the radio resource assignment, one or more transport blocks; and
wherein the wireless device is configured to:
select the first BWP, based on the first BWP being the primary active BWP, to monitor a downlink control channel; and
monitor the downlink control channel using a first search space set associated with the primary active BWP.
29. The system of claim 28 , wherein:
the base station is configured to send second DCI comprising a third field indicating the secondary active BWP and a fourth field indicating a second radio resource assignment for the secondary active BWP; and
the wireless device is configured to send, via the second radio resource assignment, one or more second transport blocks.
30. The system of claim 28 , wherein the wireless device is configured to:
deactivate the secondary active BWP of the cell based on receiving second DCI comprising a third field indicating the secondary active BWP and a fourth field indicating deactivation of the secondary active BWP.
31. The system of claim 28 , wherein a second search space associated with a second downlink control channel of the secondary active BWP is not monitored.
32. The system of claim 28 , wherein the second field comprises at least one of: a time resource allocation indicator or a frequency resource allocation indicator.
33. The system of claim 28 , wherein the DCI is based on a DCI format different from DCI format 1_1 and different from DCI format 0_1.
34. The system of claim 28 , wherein the wireless device is configured to maintain an active state of the primary active BWP of the cell while receiving the one or more transport blocks via the radio resource assignment of the secondary active BWP of the cell.
35. The system of claim 28 , wherein the second field of the DCI is different from a time resource allocation indicator or a frequency resource allocation indicator.
36. The system of claim 28 , wherein the DCI comprises a third field indicating at least one of:
a carrier indicator;
an identifier for a DCI format;
a first field indicating a frequency domain resource assignment;
a second field indicating a time domain resource assignment;
a transmit power control (TPC); or
a feedback timing indicator.