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:
activating, by a computing device, a primary bandwidth part (BWP) of a cell and a secondary BWP of the cell;
switching from the primary BWP to a default BWP of the cell as an active BWP of the cell; and
based on the switching to the default BWP and based on the secondary BWP being active, deactivating the secondary BWP.
2. The method of claim 1 , further comprising:
receiving at least one radio resource control (RRC) message indicating the default BWP.
3. The method of claim 1 , further comprising:
receiving one or more radio resource control (RRC) messages comprising at least one of:
an indication of the primary BWP; and
an indication of the secondary BWP.
4. The method of claim 1 , wherein the switching is based on a period of inactivity of the primary BWP.
5. The method of claim 1 , further comprising:
monitoring a downlink control channel on the primary BWP for downlink control information (DCI), wherein the switching from the primary BWP to the default BWP is based on a determination that the DCI is not received during the monitoring.
6. The method of claim 1 , wherein the switching from the primary BWP to the default BWP comprises:
deactivating the primary BWP; and
activating the default BWP as the active BWP.
7. The method of claim 1 , wherein the activating the primary BWP and the secondary BWP comprises:
activating the primary BWP during a first time interval; and
activating the secondary BWP during a second time interval.
8. The method of claim 1 , wherein the computing device comprises a wireless device.
9. The method of claim 1 , wherein the computing device comprises a base station.
10. The method of claim 9 , further comprising:
switching, by the base station for a wireless device, from the primary BWP to the default BWP of the cell as the active BWP of the cell.
11. The method of claim 9 , further comprising:
switching, by the base station for a plurality of wireless devices, from the primary BWP to the default BWP of the cell as the active BWP of the cell.
12. The method of claim 1 , further comprising sending or receiving at least one message via the default BWP.
13. A computing device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the computing device to:
activate a primary bandwidth part (BWP) of a cell and a secondary BWP of the cell;
switch from the primary BWP to a default BWP of the cell as an active BWP of the cell; and
based on switching to the default BWP and based on the secondary BWP being active, deactivate the secondary BWP.
14. The computing device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the computing device to:
receive at least one radio resource control (RRC) message indicating the default BWP.
15. The computing device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the computing device to receive one or more radio resource control (RRC) messages comprising at least one of:
an indication of the primary BWP; and
an indication of the secondary BWP.
16. The computing device of claim 13 , wherein the switching is based on a period of inactivity of the primary BWP.
17. The computing device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the computing device to monitor a downlink control channel on the primary BWP for downlink control information (DCI), wherein the switching from the primary BWP to the default BWP is based on a determination that the DCI is not received during the monitoring.
18. The computing device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the computing device to switch from the primary BWP to the default BWP by:
deactivating the primary BWP; and
activating the default BWP as the active BWP.
19. The computing device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the computing device to activate the primary BWP and the secondary BWP by:
activating the primary BWP during a first time interval; and
activating the secondary BWP during a second time interval.
20. The computing device of claim 13 , wherein the computing device comprises a wireless device.
21. The computing device of claim 13 , wherein the computing device comprises a base station.
22. The computing device of claim 21 , wherein the instructions, when executed by the one or more processors, cause the base station to:
switch, for a wireless device, from the primary BWP to the default BWP of the cell as the active BWP of the cell.
23. The computing device of claim 21 , wherein the instructions, when executed by the one or more processors, cause the base station to:
switch, for a plurality of wireless devices, from the primary BWP to the default BWP of the cell as the active BWP of the cell.
24. The computing device of claim 21 , wherein the instructions, when executed by the one or more processors, cause the computing device to send or receive at least one message via the default BWP.
25. A non-transitory computer-readable medium comprising instructions that, when executed, configure a computing device to:
activate a primary bandwidth part (BWP) of a cell and a secondary BWP of the cell;
switch from the primary BWP to a default BWP of the cell as an active BWP of the cell; and
based on switching to the default BWP and based on the secondary BWP being active, deactivate the secondary BWP.
26. The non-transitory computer-readable medium of claim 25 , wherein the instructions, when executed, configure the computing device to:
receive at least one radio resource control (RRC) message indicating the default BWP.
27. The non-transitory computer-readable medium of claim 25 , wherein the instructions, when executed, configure the computing device to receive one or more radio resource control (RRC) messages comprising at least one of:
an indication of the primary BWP; and
an indication of the secondary BWP.
28. The non-transitory computer-readable medium of claim 25 , wherein the switching is based on a period of inactivity of the primary BWP.
29. The non-transitory computer-readable medium of claim 25 , wherein the instructions, when executed, configure the computing device to monitor a downlink control channel on the primary BWP for downlink control information (DCI), wherein the switching from the primary BWP to the default BWP is based on a determination that the DCI is not received during the monitoring.
30. The non-transitory computer-readable medium of claim 25 , wherein the instructions, when executed, configure the computing device to switch from the primary BWP to the default BWP by:
deactivating the primary BWP; and
activating the default BWP as the active BWP.
31. The non-transitory computer-readable medium of claim 25 , wherein the instructions, when executed, configure the computing device to activate the primary BWP and the secondary BWP by:
activating the primary BWP during a first time interval; and
activating the secondary BWP during a second time interval.
32. The non-transitory computer-readable medium of claim 25 , wherein the computing device comprises a wireless device.
33. The non-transitory computer-readable medium of claim 25 , wherein the computing device comprises a base station.
34. The non-transitory computer-readable medium of claim 33 , wherein the instructions, when executed, configure the base station to:
switch, for a wireless device, from the primary BWP to the default BWP of the cell as the active BWP of the cell.
35. The non-transitory computer-readable medium of claim 33 , wherein the instructions, when executed, configure the base station to:
switch, for a plurality of wireless devices, from the primary BWP to the default BWP of the cell as the active BWP of the cell.
36. The non-transitory computer-readable medium of claim 25 , wherein the instructions, when executed, configure the computing device to send or receive at least one message via the default BWP.
37. A system comprising:
a first computing device; and
a second computing device;
wherein the first computing device is configured to:
activate a primary bandwidth part (BWP) of a cell and a secondary BWP of the cell;
switch from the primary BWP to a default BWP of the cell as an active BWP of the cell; and
based on switching to the default BWP and based on the secondary BWP being active, deactivating the secondary BWP; and
wherein the second computing device is configured to send or receive one or more communications via the default BWP.
38. The system of claim 37 , wherein the first computing device is configured to receive at least one radio resource control (RRC) message indicating the default BWP.
39. The system of claim 37 , wherein the first computing device is configured to receive one or more radio resource control (RRC) messages comprising at least one of:
an indication of the primary BWP; and
an indication of the secondary BWP.
40. The system of claim 37 , wherein the switching is based on a period of inactivity of the primary BWP.
41. The system of claim 37 , wherein the first computing device is configured to monitor a downlink control channel on the primary BWP for downlink control information (DCI), wherein the switching from the primary BWP to the default BWP is based on a determination that the DCI is not received during the monitoring.
42. The system of claim 37 , wherein the switching from the primary BWP to the default BWP comprises:
deactivating the primary BWP; and
activating the default BWP as the active BWP.
43. The system of claim 37 , wherein the first computing device is configured to activate the primary BWP and the secondary BWP by:
activating the primary BWP during a first time interval; and
activating the secondary BWP during a second time interval.
44. The system of claim 37 , wherein:
the first computing device comprises a wireless device; and
the second computing device comprises a base station.
45. The system of claim 37 , wherein:
the first computing device comprises a base station; and
the second computing device comprises a wireless device.
46. The system of claim 45 , wherein the base station is configured to:
switch, for a wireless device, from the primary BWP to the default BWP of the cell as the active BWP of the cell.
47. The system of claim 45 , wherein the base station is configured to:
switch, for a plurality of wireless devices, from the primary BWP to the default BWP of the cell as the active BWP of the cell.