Scheduling request resource selection

• US 10,568,125 B2
• Filed: 12/24/2018
• Issued: 02/18/2020
• 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): Huynh, Dung B
• Application Number:
  US16/231,877
• Publication Number:
  US 20190246417A1
• Time in Patent Office: 421 Days
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/52 based on load

Abstract

A wireless device and a base station may communicate via a plurality of cells comprising a primary cell having a primary control channel and a secondary cell having a secondary control channel, and scheduling request resources may be managed.

Claims

1. A method comprising:

receiving, by a wireless device and from a base station, at least one message comprising configuration parameters of a plurality of cells comprising;

a primary cell comprising a primary control channel transmitted to the base station; and

a secondary cell comprising a secondary control channel transmitted to the base station;

based on a media access control (MAC) entity, of the wireless device, having more than one overlapping valid control channel resource for a scheduling request, selecting, by the MAC entity, one of the primary control channel or the secondary control channel as a selected valid control channel resource for transmission of the scheduling request to the base station;

instructing, by the MAC entity, a physical layer to transmit the scheduling request via the selected valid control channel resource; and

transmitting, by the physical layer and to the base station via the selected valid control channel resource, the scheduling request.

2. The method of claim 1, wherein the plurality of cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising:

a primary PUCCH group comprising the primary cell; and

a secondary PUCCH group comprising the secondary cell.

3. The method of claim 1, wherein a first control channel resource for the scheduling request is valid if the scheduling request can be transmitted via the first control channel resource.

4. The method of claim 1, wherein the more than one overlapping valid control channel resource overlap in a transmission time interval.

5. The method of claim 1, wherein the more than one overlapping valid control channel resource overlap in a subframe.

6. The method of claim 1, wherein the secondary cell is a physical uplink control channel (PUCCH) secondary cell.

7. The method of claim 1, wherein at least one of the primary control channel or the secondary control channel is a physical uplink control channel (PUCCH).

8. The method of claim 1, wherein the selecting the one of the primary control channel or the secondary control channel as the selected valid control channel resource comprises selecting the selected valid control channel resource based on an implementation rule.

9. The method of claim 1, wherein the at least one message comprises a scheduling request configuration index for determining whether a subframe has valid resources for transmitting the scheduling request.

10. The method of claim 1, wherein the at least one message comprises:

a first scheduling request configuration index for scheduling request resources on the primary control channel; and

a second scheduling request configuration index for scheduling request resources on the secondary control channel.

11. The method of claim 1, wherein resources of the primary control channel and of the secondary control channel comprise a same timing configuration.

12. 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, at least one message comprising configuration parameters of a plurality of cells comprising;

a primary cell comprising a primary control channel transmitted to the base station; and

a secondary cell comprising a secondary control channel transmitted to the base station;

based on a media access control (MAC) entity, of the wireless device, having more than one overlapping valid control channel resource for a scheduling request, select, by the MAC entity, one of the primary control channel or the secondary control channel as a selected valid control channel resource for transmission of the scheduling request to the base station;

instruct, by the MAC entity, a physical layer to transmit the scheduling request via the selected valid control channel resource; and

transmit, by the physical layer and to the base station via the selected valid control channel resource, the scheduling request.

13. The wireless device of claim 12, wherein the plurality of cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising:

a primary PUCCH group comprising the primary cell; and

a secondary PUCCH group comprising the secondary cell.

14. The wireless device of claim 12, wherein a first control channel resource for the scheduling request is valid if the scheduling request can be transmitted via the first control channel resource.

15. The wireless device of claim 12, wherein the more than one overlapping valid control channel resource overlap in a transmission time interval.

16. The wireless device of claim 12, wherein the more than one overlapping valid control channel resource overlap in a subframe.

17. The wireless device of claim 12, wherein the secondary cell is a physical uplink control channel (PUCCH) secondary cell.

18. The wireless device of claim 12, wherein at least one of the primary control channel or the secondary control channel is a physical uplink control channel (PUCCH).

19. The wireless device of claim 12, wherein the instructions, when executed by the one or more processors, cause the MAC entity to select the one of the primary control channel or the secondary control channel as the selected valid control channel resource according to an implementation rule.

20. The wireless device of claim 12, wherein the at least one message comprises a scheduling request configuration index for determining whether a subframe has valid resources for transmitting the scheduling request.

21. The wireless device of claim 12, wherein the at least one message comprises:

a first scheduling request configuration index for scheduling request resources on the primary control channel; and

a second scheduling request configuration index for scheduling request resources on the secondary control channel.

22. The wireless device of claim 12, wherein resources of the primary control channel and of the secondary control channel comprise a same timing configuration.

23. A non-transitory computer-readable medium storing instructions that, when executed, cause:

receiving, by a wireless device and from a base station, at least one message comprising configuration parameters of a plurality of cells comprising;

a primary cell comprising a primary control channel transmitted to the base station; and

a secondary cell comprising a secondary control channel transmitted to the base station;

based on a media access control (MAC) entity, of the wireless device, having more than one overlapping valid control channel resource for a scheduling request, selecting, by the MAC entity, one of the primary control channel or the secondary control channel as a selected valid control channel resource for transmission of the scheduling request to the base station;

instructing, by the MAC entity, a physical layer to transmit the scheduling request via the selected valid control channel resource; and

transmitting, by the physical layer and to the base station via the selected valid control channel resource, the scheduling request.

24. The non-transitory computer-readable medium of claim 23, wherein the plurality of cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising:

a primary PUCCH group comprising the primary cell; and

a secondary PUCCH group comprising the secondary cell.

25. The non-transitory computer-readable medium of claim 23, wherein a first control channel resource for the scheduling request is valid if the scheduling request can be transmitted via the first control channel resource.

26. The non-transitory computer-readable medium of claim 23, wherein the more than one overlapping valid control channel resource overlap in a transmission time interval.

27. The non-transitory computer-readable medium of claim 23, wherein the more than one overlapping valid control channel resource overlap in a subframe.

28. The non-transitory computer-readable medium of claim 23, wherein the secondary cell is a physical uplink control channel (PUCCH) secondary cell.

29. The non-transitory computer-readable medium of claim 23, wherein at least one of the primary control channel or the secondary control channel is a physical uplink control channel (PUCCH).

30. The non-transitory computer-readable medium of claim 23, wherein the instructions, when executed, cause the MAC entity to select the one of the primary control channel or the secondary control channel as the selected valid control channel resource according to an implementation rule.

31. The non-transitory computer-readable medium of claim 23, wherein the at least one message comprises a scheduling request configuration index for determining whether a subframe has valid resources for transmitting the scheduling request.

32. The non-transitory computer-readable medium of claim 23, wherein the at least one message comprises:

a first scheduling request configuration index for scheduling request resources on the primary control channel; and

a second scheduling request configuration index for scheduling request resources on the secondary control channel.

33. The non-transitory computer-readable medium of claim 23, wherein resources of the primary control channel and of the secondary control channel comprise a same timing configuration.

34. A system comprising:

a wireless device and a base station;

wherein the wireless device is configured to;

receive, from the base station, at least one message comprising configuration parameters of a plurality of cells comprising;

a primary cell comprising a primary control channel transmitted to the base station; and

a secondary cell comprising a secondary control channel transmitted to the base station;

based on a media access control (MAC) entity, of the wireless device, having more than one overlapping valid control channel resource for a scheduling request, select, by the MAC entity of the wireless device, one of the primary control channel or the secondary control channel as a selected valid control channel resource for transmission of the scheduling request to the base station;

instruct, by the MAC entity, a physical layer to transmit the scheduling request via the selected valid control channel resource; and

transmit, by the physical layer and to the base station via the selected valid control channel resource, the scheduling request; and

wherein the base station is configured to receive the scheduling request.

35. The system of claim 34, wherein the plurality of cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising:

a primary PUCCH group comprising the primary cell; and

a secondary PUCCH group comprising the secondary cell.

36. The system of claim 34, wherein a first control channel resource for the scheduling request is valid if the scheduling request can be transmitted via the first control channel resource.

37. The system of claim 34, wherein the more than one overlapping valid control channel resource overlap in a transmission time interval.

38. The system of claim 34, wherein the more than one overlapping valid control channel resource overlap in a subframe.

39. The system of claim 34, wherein the secondary cell is a physical uplink control channel (PUCCH) secondary cell.

40. The system of claim 34, wherein at least one of the primary control channel or the secondary control channel is a physical uplink control channel (PUCCH).

41. The system of claim 34, wherein the wireless device is configured to cause the MAC entity to select the one of the primary control channel or the secondary control channel as the selected valid control channel resource according to an implementation rule.

42. The system of claim 34, wherein the at least one message comprises a scheduling request configuration index for determining whether a subframe has valid resources for transmitting the scheduling request.

43. The system of claim 34, wherein the at least one message comprises:

a first scheduling request configuration index for scheduling request resources on the primary control channel; and

a second scheduling request configuration index for scheduling request resources on the secondary control channel.

44. The system of claim 34, wherein resources of the primary control channel and of the secondary control channel comprise a same timing configuration.