IP Library Granted Patent US 10,524,206
Granted Patent B2
US 10,524,206 · App. 15/188,720 · Granted Dec 31, 2019

Macro and micro discontinuous reception

Inventors: Ravi Agarwal (San Diego, CA); Gavin Bernard Horn (La Jolla, CA); Peter Pui Lok Ang (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W52/0229H04W72/042H04W76/28H04W88/02
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Quick Facts
Patent No.
US 10,524,206
App. No.
15/188,720
Granted
Dec 31, 2019
Kind
B2
Abstract

Methods, systems, and devices for wireless communication are described. A wireless device may receive a downlink (DL) reception indication during an active duration of a discontinuous reception (DRX) configuration. The DL reception indication may indicate the presence of a reception opportunity following an inactivity interval, as well as the length of the inactivity interval. The wireless device may refrain from DL monitoring during the inactivity interval. In some cases, the wireless device may enter a sleep mode during the inactivity interval and wake up to receive a subsequent transmission during the reception opportunity. In some examples, the wireless device may use the inactivity interval to communicate using a different radio access technology (RAT).

Claims (144)

1. A method of wireless communication comprising:

receiving a downlink (DL) reception indication during an active duration of a discontinuous reception (DRX) configuration;

identifying an inactivity interval based at least in part on the DL reception indication;

identifying a reception opportunity of the active duration of the DRX configuration, following the inactivity interval, based at least in part on the DL reception indication, wherein the reception opportunity is different from an on duration of the DRX configuration; and

listening for a subsequent DL reception indication during the reception opportunity.

2. The method of claim 1 , further comprising:

modifying a DRX operation based at least in part on the DL reception indication.

3. The method of claim 1 , further comprising:

identifying a subsequent reception opportunity and a subsequent inactivity interval based at least in part on listening for the subsequent DL reception indication.

4. The method of claim 3 , wherein listening for the subsequent DL reception indication is associated with a first receiver power, the method further comprising:

receiving a DL transmission during the subsequent reception opportunity, wherein receiving the DL transmission is associated with a second receiver power greater than the first receiver power.

5. The method of claim 3 , wherein listening for the subsequent DL reception indication is associated with a first receiver bandwidth, the method further comprising:

receiving a DL transmission during the subsequent reception opportunity, wherein receiving the DL transmission is associated with a second receiver bandwidth greater than the first receiver bandwidth.

6. The method of claim 3 , further comprising:

entering a sleep mode during the subsequent inactivity interval; and

waking up from the sleep mode for receiving a downlink transmission during the subsequent reception opportunity.

7. The method of claim 1 , further comprising:

identifying an absence of a subsequent reception opportunity based at least in part on listening for the subsequent DL reception indication; and

powering down a radio based at least in part on the absence of a subsequent reception opportunity.

8. The method of claim 1 , further comprising:

identifying a DRX sleep indication based at least in part on listening for the subsequent DL reception indication; and

powering down a radio based at least in part on the DRX sleep indication.

9. The method of claim 1 , wherein receiving the DL reception indication is associated with a first receiver power and listening for the subsequent DL reception indication is associated with a second receiver power, different from the first receiver power.

10. The method of claim 1 , wherein receiving the DL reception indication is associated with a first receiver bandwidth and listening for the subsequent DL reception indication is associated with a second receiver bandwidth, different from the first receiver bandwidth.

11. The method of claim 1 , further comprising:

refraining from DL monitoring during the inactivity interval.

12. The method of claim 1 , further comprising:

entering a sleep mode during the inactivity interval; and

waking up from the sleep mode to listen for the subsequent DL reception indication.

13. The method of claim 12 , wherein the sleep mode comprises a lower receiver power than a wake mode.

14. The method of claim 1 , wherein the inactivity interval is longer than or shorter than a cycle of the DRX configuration.

15. The method of claim 1 , wherein the DL reception indication comprises an indication of a duration of the inactivity interval.

16. The method of claim 1 , wherein the DL reception indication is received in a physical downlink control channel (PDCCH) or a media access control (MAC) control element (CE).

17. The method of claim 1 , wherein the DL reception indication is received using a first radio access technology (RAT), the method further comprising:

communicating during the inactivity interval using a second RAT.

18. The method of claim 1 , wherein the active duration comprises the on duration of the DRX configuration or a previous reception opportunity.

19. The method of claim 1 , further comprising:

transmitting a gap size request, wherein a duration of the inactivity interval is based at least in part on the gap size request.

20. The method of claim 1 , wherein a duration of the inactivity interval is based at least in part on a network load, a scheduling condition, a latency tolerance, a traffic profile, or any combination thereof.

21. A method of wireless communication comprising:

transmitting a first downlink (DL) reception indication for a user equipment (UE) during an active duration of a discontinuous reception (DRX) configuration, the DL reception indication indicating a first inactivity interval and a first reception opportunity of the active duration of the DRX configuration, following the first inactivity interval, wherein the first reception opportunity is different from an on duration of the DRX configuration; and

transmitting a second DL reception indication for the UE during the first reception opportunity.

22. The method of claim 21 , further comprising:

modifying a DRX operation based at least in part on the first DL reception indication.

23. The method of claim 21 , wherein the second DL reception indication indicates a second reception opportunity that does not overlap with the first reception opportunity.

24. The method of claim 21 , wherein transmitting the second DL reception indication is associated with a first receiver power, the method further comprising:

transmitting a DL transmission during a second reception opportunity indicated by the second DL reception indication, wherein transmitting the DL transmission is associated with a second receiver power greater than the first receiver power.

25. The method of claim 21 , wherein transmitting the second DL reception indication is associated with a first receiver bandwidth, the method further comprising:

transmitting a DL transmission during a second reception opportunity indicated by the second DL reception indication, wherein transmitting the DL transmission is associated with a second receiver bandwidth greater than the first receiver bandwidth.

26. The method of claim 21 , wherein the second DL reception indication comprises a DRX sleep indication for the UE.

27. The method of claim 21 , wherein transmitting the first DL reception indication is associated with a first receiver power and transmitting the second DL reception indication is associated with a second receiver power, different from the first receiver power.

28. The method of claim 21 , wherein transmitting the first DL reception indication is associated with a first receiver bandwidth and transmitting the second DL reception indication is associated with a second receiver bandwidth, different from the first receiver bandwidth.

29. The method of claim 21 , further comprising:

refraining from transmitting for the UE during the first inactivity interval or a second inactivity interval indicated by the second DL reception indication.

30. The method of claim 21 , wherein the first inactivity interval or a second inactivity interval indicated by the second DL reception indication is longer than or shorter than a cycle of the DRX configuration.

31. The method of claim 21 , wherein the first DL reception indication comprises an indication of a duration of the first inactivity interval, or the second DL reception indication comprises an indication of a duration of a second inactivity interval.

32. The method of claim 21 , wherein the first DL reception indication or the second DL reception indication is transmitted in a physical downlink control channel (PDCCH) or a media access control (MAC) control element (CE).

33. The method of claim 21 , wherein the active duration comprises the on duration of the DRX configuration or a previous reception opportunity.

34. The method of claim 21 , further comprising:

receiving a gap size request from the UE, wherein a duration of the first inactivity interval or a second inactivity interval indicated by the second DL reception indication is based at least in part on the received gap size request.

35. The method of claim 21 , wherein a duration of the first inactivity interval or a second inactivity interval indicated by the second DL reception indication is based at least in part on a network load, a scheduling condition, a latency tolerance, a traffic profile, or any combination thereof.

36. An apparatus for wireless communication comprising:

a processor; and

memory in electronic communication with the processor;

the processor and memory configured to:

receive a downlink (DL) reception indication during an active duration of a discontinuous reception (DRX) configuration;

identify an inactivity interval based at least in part on the DL reception indication;

identify a reception opportunity of the active duration of the DRX configuration, following the inactivity interval, based at least in part on the DL reception indication, wherein the reception opportunity is different from an on duration of the DRX configuration; and

listen for a subsequent DL reception indication during the reception opportunity.

37. The apparatus of claim 36 , wherein the processor and memory are configured to:

modify a DRX operation based at least in part on the DL reception indication.

38. The apparatus of claim 36 , wherein the processor and memory are configured to:

identify a subsequent reception opportunity and a subsequent inactivity interval based at least in part on listening for the subsequent DL reception indication.

39. The apparatus of claim 38 , wherein listening for the subsequent DL reception indication is associated with a first receiver power, and wherein the processor and memory are configured to:

receive a DL transmission during the subsequent reception opportunity, wherein receiving the DL transmission is associated with a second receiver power greater than the first receiver power.

40. The apparatus of claim 38 , wherein listening for the subsequent DL reception indication is associated with a first receiver bandwidth, and wherein the processor and memory are configured to:

receive a DL transmission during the subsequent reception opportunity, wherein receiving the DL transmission is associated with a second receiver bandwidth greater than the first receiver bandwidth.

41. The apparatus of claim 38 , wherein the processor and memory are configured to:

enter a sleep mode during the subsequent inactivity interval; and

wake up from the sleep mode to receive a downlink transmission during the subsequent reception opportunity.

42. The apparatus of claim 36 , wherein the processor and memory are configured to:

identify an absence of a subsequent reception opportunity based at least in part on listening for the subsequent DL reception indication; and

power down a radio based at least in part on the absence of a subsequent reception opportunity.

43. The apparatus of claim 36 , wherein the processor and memory are configured to:

identify a DRX sleep indication based at least in part on listening for the subsequent DL reception indication; and

power down a radio based at least in part on the DRX sleep indication.

44. The apparatus of claim 36 , wherein receiving the DL reception indication is associated with a first receiver power and listening for the subsequent DL reception indication is associated with a second receiver power, different from the first receiver power.

45. The apparatus of claim 36 , wherein receiving the DL reception indication is associated with a first receiver bandwidth and listening for the subsequent DL reception indication is associated with a second receiver bandwidth, different from the first receiver bandwidth.

46. The apparatus of claim 36 , wherein the processor and memory are configured to:

refrain from DL monitoring during the inactivity interval.

47. The apparatus of claim 36 , wherein the processor and memory are configured to:

enter a sleep mode during the inactivity interval; and

wake up from the sleep mode to listen for the subsequent DL reception indication.

48. The apparatus of claim 47 , wherein the sleep mode comprises a lower receiver power than a wake mode.

49. The apparatus of claim 36 , wherein the inactivity interval is longer than or shorter than a cycle of the DRX configuration.

50. The apparatus of claim 36 , wherein the DL reception indication comprises an indication of a duration of the inactivity interval.

51. The apparatus of claim 36 , wherein the DL reception indication is received in a physical downlink control channel (PDCCH) or a media access control (MAC) control element (CE).

52. The apparatus of claim 36 , wherein the DL reception indication is received using a first radio access technology (RAT), and wherein the processor and memory are configured to:

communicate during the inactivity interval using a second RAT.

53. The apparatus of claim 36 , wherein the active duration comprises the on duration of the DRX configuration or a previous reception opportunity.

54. The apparatus of claim 36 , wherein the processor and memory are configured to:

transmit a gap size request, the duration of the inactivity interval being based at least in part on the gap size request.

55. The apparatus of claim 36 , wherein a duration of the inactivity interval is based at least in part on a network load, a scheduling condition, a latency tolerance, a traffic profile, or any combination thereof.

56. An apparatus for wireless communication comprising:

a processor;

memory in electronic communication with the processor;

the processor and memory configured to:

transmit a first downlink (DL) reception indication for a user equipment (UE) during an active duration of a discontinuous reception (DRX) configuration, the DL reception indication indicating a first inactivity interval and a first reception opportunity of the active duration of the DRX configuration, following the first inactivity interval, wherein the first reception opportunity is different from an on duration of the DRX configuration; and

transmit a second DL reception indication for the UE during the first reception opportunity.

57. The apparatus of claim 56 , wherein the processor and memory are configured to:

modify a DRX operation based at least in part on the first DL reception indication.

58. The apparatus of claim 56 , wherein the second DL reception indication indicates a second reception opportunity that does not overlap with the first reception opportunity.

59. The apparatus of claim 56 , wherein transmitting the second DL reception indication is associated with a first receiver power, the processor and memory being further configured to:

transmit a DL transmission during a second reception opportunity indicated by the second DL reception indication, wherein transmitting the DL transmission is associated with a second receiver power greater than the first receiver power.

60. The apparatus of claim 56 , wherein transmitting the second DL reception indication is associated with a first receiver bandwidth, the processor and memory being further configured to:

transmit a DL transmission during a second reception opportunity indicated by the second DL reception indication, wherein transmitting the DL transmission is associated with a second receiver bandwidth greater than the first receiver bandwidth.

61. The apparatus of claim 56 , wherein the second DL reception indication comprises a DRX sleep indication for the UE.

62. The apparatus of claim 56 , wherein transmitting the first DL reception indication is associated with a first receiver power and transmitting the second DL reception indication is associated with a second receiver power, different from the first receiver power.

63. The apparatus of claim 56 , wherein transmitting the first DL reception indication is associated with a first receiver bandwidth and transmitting the second DL reception indication is associated with a second receiver bandwidth, different from the first receiver bandwidth.

64. The apparatus of claim 56 , wherein the processor and memory are configured to:

refrain from transmitting for the UE during the first inactivity interval or a second inactivity interval indicated by the second DL reception indication.

65. The apparatus of claim 56 , wherein the first inactivity interval or a second inactivity interval indicated by the second DL reception indication is longer than or shorter than a cycle of the DRX configuration.

66. The apparatus of claim 56 , wherein the first DL reception indication comprises an indication of a duration of the first inactivity interval, or the second DL reception indication comprises an indication of a duration of a second inactivity interval.

67. The apparatus of claim 56 , wherein the first DL reception indication or the second DL reception indication is transmitted in a physical downlink control channel (PDCCH) or a media access control (MAC) control element (CE).

68. The apparatus of claim 56 , wherein the active duration comprises the on duration of the DRX configuration or a previous reception opportunity.

69. The apparatus of claim 56 , wherein the processor and memory are configured to:

receive a gap size request from the UE, wherein a duration of the first inactivity interval or a second inactivity interval indicated by the second DL reception indication is based at least in part on the received gap size request.

70. The apparatus of claim 56 , wherein a duration of the first inactivity interval or a second inactivity interval indicated by the second DL reception indication is based at least in part on a network load, a scheduling condition, a latency tolerance, a traffic profile, or any combination thereof.

71. An apparatus for wireless communication comprising:

means for receiving a downlink (DL) reception indication during an active duration of a discontinuous reception (DRX) configuration;

means for identifying an inactivity interval based at least in part on the DL reception indication;

means for identifying a reception opportunity of the active duration of the DRX configuration, following the inactivity interval, based at least in part on the DL reception indication, wherein the reception opportunity is different from an on duration of the DRX configuration; and

means for listening for a subsequent DL reception indication during the reception opportunity.

72. An apparatus for wireless communication comprising:

means for transmitting a first downlink (DL) reception indication for a user equipment (UE) during an active duration of a discontinuous reception (DRX) configuration, the DL reception indication indicating a first inactivity interval and a first reception opportunity of the active duration of the DRX configuration, following the first inactivity interval, wherein the first reception opportunity is different from an on duration of the DRX configuration; and

means for transmitting a second DL reception indication for the UE during the first reception opportunity.

73. A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:

receive a downlink (DL) reception indication during an active duration of a discontinuous reception (DRX) configuration;

identify an inactivity interval based at least in part on the DL reception indication;

identify a reception opportunity of the active duration of the DRX configuration, following the inactivity interval based at least in part on the DL reception indication, wherein the reception opportunity is different from an ON duration of the DRX configuration; and

listen for a subsequent DL reception indication during the reception opportunity.

74. A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:

transmit a first downlink (DL) reception indication for a user equipment (UE) during an active duration of a discontinuous reception (DRX) configuration, the DL reception indication indicating a first inactivity interval and a first reception opportunity of the active duration of the DRX configuration, following the first inactivity interval, wherein the first reception opportunity is different from an on duration of the DRX configuration; and

transmit a second DL reception indication for the UE during the first reception opportunity.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 1, 2016
From: AGARWAL, RAVI; HORN, GAVIN BERNARD; ANG, PETER PUI LOK
To: QUALCOMM INCORPORATED
Reel/Frame 039611/0247 →
Continuity (4)
Provisional Application 62265244 · Dec 9, 2015
Provisional Application 62265249 · Dec 9, 2015
Provisional Application 62265256 · Dec 9, 2015
Related Publication 20170171818A1 · Jun 15, 2017
Cited By (4)
US 12,289,677 US 12,302,250 US 12,369,159 US 12,418,861