Multiple active bandwidth parts

Patent metadata

Field	Value
Publication number	US-12058772-B2
Application number	US-202217805489-A
Country	US
Kind code	B2
Filing date	Jun 6, 2022
Priority date	May 15, 2018
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

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.

First claim

The invention claimed is:

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 ,

Assignees

• Comcast Cable Comm Llc

Inventors

• Zhou Hua
• Dinan Esmael Hejazi
• Cirik Ali Cagatay
• Babaei Alireza
• Jeon Hyoungsuk
• Park Kyungmin

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04L5/0098

  Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands · CPC title

• H04W76/36

  for reassigning the resources associated with the released connections · CPC title