Secondary cell deactivation in a wireless device and a base station

• US 10,700,845 B2
• Filed: 03/21/2018
• Issued: 06/30/2020
• Est. Priority Date: 03/09/2015
• Status: Active Grant

• Current Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Original Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Inventors: Dinan, Esmael Hejazi
• Primary Examiner(s): Anwar, Mohammad S
• Application Number:
  US15/927,283
• Publication Number:
  US 20180212743A1
• Time in Patent Office: 832 Days
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 76/38 triggered by timers
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A wireless device receives from a base station at least message that comprises configuration parameters of a plurality of cells. The plurality of cells comprises a plurality of secondary cells. The plurality of cells are grouped into a plurality of groups that comprise a primary group comprising a primary cell with a primary control channel, and a secondary group comprising a plurality of secondary cells. The plurality of secondary cells comprise a first secondary cell with a secondary control channel, and a deactivation timer value for a deactivation timer of the first secondary cell. The wireless device keeps the first secondary cell active in response to: the deactivation timer with the deactivation timer value being expired in a subframe, and a secondary cell in the secondary group being activated in the subframe.

Claims

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, from a base station;

configuration parameters of a plurality of cells that are grouped into;

a primary group comprising a primary cell with a primary control channel; and

a secondary group comprising a first secondary cell with a secondary control channel and a second secondary cell different from the first secondary cell; and

a deactivation timer value for a deactivation timer of the first secondary cell; and

keep the first secondary cell active, after the deactivation timer expires during a subframe, based on the second secondary cell being active during the subframe.

2. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to deactivate the first secondary cell after:

the deactivation timer expires during the subframe; and

each secondary cell in the secondary group, except the first secondary cell, is deactivated in the subframe.

3. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to maintain configuration of physical uplink control channel (PUCCH) resources of the first secondary cell after the first secondary cell is deactivated.

4. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to restart the deactivation timer after a physical downlink control channel (PDCCH) on the first secondary cell indicates an uplink grant or a downlink assignment.

5. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to restart the deactivation timer after a physical downlink control channel (PDCCH) on a cell scheduling the first secondary cell indicates an uplink grant or a downlink assignment for the first secondary cell.

6. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive, from the base station, configuration parameters of physical uplink control channel (PUCCH) resources of the PUCCH first secondary cell.

7. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive, from the base station, information that maps each of a plurality of secondary cells to one of the primary group or the secondary group.

8. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to transmit, via the first secondary cell, at least one of the following:

channel state information;

positive acknowledgement;

negative acknowledgement;

or

a scheduling request.

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;

configuration parameters of a plurality of cells that are grouped into;

a primary group comprising a primary cell with a primary control channel; and

a secondary group comprising a first secondary cell with a secondary control channel and a second secondary cell different from the first secondary cell; and

a deactivation timer value for a deactivation timer of the first secondary cell; and

keep a state of the first secondary cell active, after the deactivation timer expires during a subframe, based on the second secondary cell being active during the subframe.

10. The base station of claim 9, wherein the instructions, when executed by the one or more processors, further cause the base station to deactivate the state of the first secondary cell after:

the deactivation timer expires during the subframe; and

each secondary cell in the secondary group, except the first secondary cell, is deactivated.

11. The base station of claim 9, wherein the instructions, when executed by the one or more processors, further cause the base station to maintain configuration of physical uplink control channel (PUCCH) resources of the PUCCH first secondary cell after the first secondary cell is deactivated.

12. The base station of claim 9, wherein the instructions, when executed by the one or more processors, further cause the base station to restart the deactivation timer after a physical downlink control channel (PDCCH) on the first secondary cell indicates an uplink grant or a downlink assignment.

13. The base station of claim 9, wherein the instructions, when executed by the one or more processors, further cause the base station to restart the deactivation timer after a physical downlink control channel (PDCCH) on a cell scheduling the first secondary cell indicates an uplink grant or a downlink assignment for the first secondary cell.

14. The base station of claim 9, wherein the instructions, when executed by the one or more processors, further cause the base station to transmit, to the wireless device, configuration parameters of physical uplink control channel (PUCCH) resources of the first secondary cell.

15. The base station of claim 9, wherein the instructions, when executed by the one or more processors, further cause the base station to transmit, to the wireless device, information that maps each of a plurality of secondary cells to one of the primary group or the secondary group.

16. The base station of claim 9, wherein the instructions, when executed by the one or more processors, further cause the base station to receive, via the first secondary cell, at least one of the following:

channel state information;

positive acknowledgement;

negative acknowledgement;

or

a scheduling request.

17. A method comprising:

receiving, by a wireless device;

configuration parameters of a plurality of cells that are grouped into;

a primary group comprising a primary cell with a primary control channel; and

a secondary group comprising a first secondary cell with a secondary control channel and a second secondary cell different from the first secondary cell; and

a deactivation timer value for a deactivation timer of the first secondary cell; and

keeping, by the wireless device, the first secondary cell active, after the deactivation timer expires during a subframe, based on the second secondary cell being active during the subframe.

18. The method of claim 17, further comprising deactivating the first secondary cell after:

the deactivation timer expires during the subframe; and

each secondary cell in the secondary group, except the first secondary cell, is deactivated.

19. The method of claim 17, further comprising maintaining configuration of physical uplink control channel (PUCCH) resources of the first secondary cell after the first secondary cell is deactivated.

20. The method of claim 17, further comprising restarting the deactivation timer after a physical downlink control channel (PDCCH) on the first secondary cell indicates an uplink grant or a downlink assignment.

21. The method of claim 17, further comprising restarting the deactivation timer after a physical downlink control channel (PDCCH) on a cell scheduling the first secondary cell indicates an uplink grant or a downlink assignment for the first secondary cell.

22. The method of claim 17, further comprising receiving configuration parameters of physical uplink control channel (PUCCH) resources of the first secondary cell.

23. The method of claim 17, further comprising receiving information that maps each of a plurality of secondary cells to one of the primary group or the secondary group.

24. The method of claim 17, further comprising transmitting, via the first secondary cell, at least one of the following:

channel state information;

positive acknowledgement;

negative acknowledgement;

or

a scheduling request.

25. A method comprising:

transmitting, by a base station;

configuration parameters of a plurality of cells that are grouped into;

a primary group comprising a primary cell with a primary control channel; and

a secondary group comprising a first secondary cell with a secondary control channel and a second secondary cell different from the first secondary cell; and

a deactivation timer value for a deactivation timer of the first secondary cell; and

keeping a state of the first secondary cell active, after the deactivation timer expires during a subframe, based on the second secondary cell being active during the subframe.

26. The method of claim 25, further comprising deactivating the state of the first secondary cell after:

the deactivation timer expires during the subframe; and

each secondary cell in the secondary group, except the first secondary cell, is deactivated.

27. The method of claim 25, further comprising maintaining configuration of physical uplink control channel (PUCCH) resources of the first secondary cell after the first secondary cell is deactivated.

28. The method of claim 25, further comprising restarting the deactivation timer after a physical downlink control channel (PDCCH) on the first secondary cell indicates an uplink grant or a downlink assignment.

29. The method of claim 25, further comprising restarting the deactivation timer after a physical downlink control channel (PDCCH) on a cell scheduling the first secondary cell indicates an uplink grant or a downlink assignment for the first secondary cell.

30. The method of claim 25, further comprising transmitting configuration parameters of physical uplink control channel (PUCCH) resources of the first secondary cell.

31. The method of claim 25, further comprising transmitting information that maps each of a plurality of secondary cells to one of the primary group or the secondary group.

32. The method of claim 25, further comprising receiving, via the first secondary cell, at least one of the following:

channel state information;

positive acknowledgement;

negative acknowledgement;

or

a scheduling request.

33. A system comprising:

a wireless device and a base station;

wherein the base station is configured to;

transmit, to the wireless device;

configuration parameters of a plurality of cells that are grouped into;

a primary group comprising a primary cell with a primary control channel; and

a secondary group comprising a first secondary cell with a secondary control channel and a second secondary cell different from the first secondary cell; and

a deactivation timer value for a deactivation timer of the first secondary cell; and

wherein the wireless device is configured to;

receive, from the base station, the configuration parameters; and

keep the first secondary cell active, after the deactivation timer expires during a subframe, based on the second secondary cell being active during the subframe.

34. The system of claim 33, wherein the wireless device is further configured to deactivate the first secondary cell after:

the deactivation timer expires during the subframe; and

each secondary cell in the secondary group, except the first secondary cell, is deactivated.

35. The system of claim 33, wherein the wireless device is further configured to maintain configuration of physical uplink control channel (PUCCH) resources of the first secondary cell after the first secondary cell is deactivated.

36. The system of claim 33, wherein the wireless device is configured to restart the deactivation timer after a physical downlink control channel (PDCCH) on the first secondary cell indicates an uplink grant or a downlink assignment.

37. The system of claim 33, wherein the wireless device is further configured to restart the deactivation timer after a physical downlink control channel (PDCCH) on a cell scheduling the first secondary cell indicates an uplink grant or a downlink assignment for the first secondary cell.

38. The system of claim 33, wherein the base station is further configured to transmit, to the wireless device, configuration parameters of physical uplink control channel (PUCCH) resources of the first secondary cell.

39. The system of claim 33, wherein the base station is further configured to transmit, to the wireless device, information that maps each of a plurality of secondary cells to one of the primary group or the secondary group.

40. The system of claim 33, wherein the wireless device is further configured to transmit, via the first secondary cell, at least one of the following:

channel state information;

positive acknowledgement;

negative acknowledgement;

or

a scheduling request.