Techniques for paging in extended discontinuous reception

• US 10,531,514 B2
• Filed: 08/06/2018
• Issued: 01/07/2020
• Est. Priority Date: 05/04/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Vajapeyam, Madhavan Srinivasan, Griot, Miguel, Kitazoe, Masato
• Primary Examiner(s): Elliott, IV, Benjamin H
• Application Number:
  US16/056,023
• Publication Number:
  US 20180352604A1
• Time in Patent Office: 519 Days
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Aspects of the present disclosure provide techniques that may be used wireless network communication devices to support devices operating with extended discontinuous reception (eDRX). An exemplary method, performed by a BS, generally includes determining at least one paging hyper-frame for paging a user equipment (UE) based on an identification (ID) of the UE, the paging hyper-frame determined from a set of periodically occurring hyper-frames that each span a number of radio frames, receiving a request to page the UE, and transmitting a paging signal to the UE in at least one subframe within a radio frame of the paging hyper-frame. Another exemplary method, performed by a UE, generally includes determining at least one paging hyper-frame for monitoring for a paging signal from a base station (BS) based on an identification (ID) of the UE, the paging hyper-frame determined from a set of periodically occurring hyper-frames that each span a number of radio frames, and monitoring for the paging signal in at least one subframe within a radio frame of the paging hyper-frame.

Claims

1. A method of wireless communications by a user equipment (UE), comprising:

monitoring for a paging signal during at least one of a plurality of paging intervals included in a first paging hyper-frame, the first paging hyper-frame having a first paging hyper-frame initiation time indication based on an identification (ID) of the UE, the first paging hyper-frame including the plurality of paging intervals followed by associated idle intervals;

receiving a paging signal during a first paging interval of the plurality of paging intervals;

refraining from monitoring for a paging signal for a duration subsequent to monitoring for the paging signal until at least expiration of the associated idle interval of the first paging interval;

after expiration of a last paging interval of the plurality of paging intervals of the first hyper-frame, refraining from monitoring for a paging signal during an extended idle period; and

monitoring for a paging signal during at least one of a plurality of paging intervals included in a second paging hyper-frame.

2. The method of claim 1, wherein the first paging hyper-frame is an initial paging hyper-frame, and wherein the first paging hyper-frame initiation time indication is a hyper system frame number (H-SFN) determined using the UE ID.

3. The method of claim 2, wherein the H-SFN is received from a base station.

4. The method of claim 1, wherein a duration of each of the plurality of paging intervals and the associated idle intervals is a discontinuous reception (DRX) time.

5. The method of claim 1, wherein the UE receives configuration information including the DRX time from a base station using non-access stratum (NAS) or radio resource control (RRC) signaling.

6. The method of claim 1, wherein a duration of the first hyper-frame and the associated extended idle period is an extended discontinuous reception (eDRX) time.

7. The method of claim 6, wherein the UE receives an assignment of the eDRX time from a base station.

8. The method of claim 6, wherein the first paging hyper-frame is an initial paging hyper-frame and wherein the first paging hyper-frame initiation time indication is an H-SFN and wherein a second paging hyper-frame time indication is determined using the H-SFN of the first paging hyper-frame and the eDRX time.

9. The method of claim 1, wherein the first paging interval of the plurality of paging intervals comprises a first paging frame, and wherein receiving a paging signal during the first paging interval of the plurality of paging intervals comprises receiving a paging signal during at least one subframe of the first paging frame.

10. A user equipment (UE) comprising:

means for monitoring for a paging signal during at least one of a plurality of paging intervals included in a first paging hyper-frame, the first paging hyper-frame having a first paging hyper-frame initiation time indication based on an identification (ID) of the UE, the first paging hyper-frame including the plurality of paging intervals followed by associated idle intervals;

means for receiving a paging signal during a first paging interval of the plurality of paging intervals;

means for refraining from monitoring for a paging signal for a duration subsequent to monitoring for the paging signal until at least expiration of the associated idle interval of the first paging interval;

means for, after expiration of a last paging interval of the plurality of paging intervals of the first hyper-frame, refraining from monitoring for a paging signal during an extended idle period; and

means for monitoring for a paging signal during at least one of a plurality of paging intervals included in a second paging hyper-frame.

11. The UE of claim 10, wherein the first paging hyper-frame is an initial paging hyper-frame, and wherein the first paging hyper-frame initiation time indication is a hyper system frame number (H-SFN) determined using the UE ID.

12. The UE of claim 11, further comprising means for receiving the H-SFN from a base station.

13. The UE of claim 10, wherein a duration of each of the plurality of paging intervals and the associated idle intervals is a discontinuous reception (DRX) time.

14. The UE of claim 10, further comprising means for receiving configuration information including the DRX time from a base station using non-access stratum (NAS) or radio resource control (RRC) signaling.

15. The UE of claim 10, wherein a duration of the first paging hyper-frame and the associated extended idle period is an extended discontinuous reception (eDRX) time.

16. The UE of claim 15, further comprising means for receiving an assignment of the eDRX time from a base station.

17. The UE of claim 15, wherein the first paging hyper-frame is an initial paging hyper-frame and wherein the first paging hyper-frame initiation time indication is an H-SFN and wherein a second paging hyper-frame time indication is determined using the H-SFN of the first paging hyper-frame and the eDRX time.

18. The UE of claim 10, wherein the first paging interval of the plurality of paging intervals comprises a first paging frame, and wherein receiving a paging signal during the first paging interval of the plurality of paging intervals comprises receiving a paging signal during at least one subframe of the first paging frame.

19. A user equipment (UE) comprising:

memory;

processor circuitry in communication with the memory, the processor circuitry configured to access the memory and execute operations to;

monitor for a paging signal during at least one of a plurality of paging intervals included in a first paging hyper-frame, the first paging hyper-frame having a first paging hyper-frame initiation time indication based on an identification (ID) of the UE, the first paging hyper-frame including the plurality of paging intervals followed by associated idle intervals;

process a paging signal received during a first paging interval of the plurality of paging intervals;

refrain from monitoring for a paging signal for a duration subsequent to monitoring for the paging signal until at least expiration of the associated idle interval of the first paging interval;

refrain from monitoring for a paging signal during an extended idle period after expiration of a last paging interval of the plurality of paging intervals of the first hyper-frame; and

monitor for a paging signal during at least one of a plurality of paging intervals included in a second paging hyper-frame.

20. The UE of claim 19, wherein the first paging hyper-frame is an initial paging hyper-frame, and wherein the first paging hyper-frame initiation time indication is a hyper system frame number (H-SFN) determined using the UE ID.

21. The UE of claim 20, further comprising a transceiver configured to receive the H-SFN from a base station and to receive the paging signal received during the first paging interval.

22. The UE of claim 19, wherein a duration of each of the plurality of paging intervals and the associated idle intervals is a discontinuous reception (DRX) time.

23. The UE of claim 19, wherein the processor circuitry is further configured to process received configuration information including the DRX time from a base station using non-access stratum (NAS) or radio resource control (RRC) signaling.

24. The UE of claim 19, wherein a duration of the first paging hyper-frame and the associated extended idle period is an extended discontinuous reception (eDRX) time.

25. The UE of claim 24, wherein the processor circuitry is further configured to process a received assignment of the eDRX time.

26. The UE of claim 24, wherein the first paging hyper-frame is an initial paging hyper-frame and wherein the first paging hyper-frame initiation time indication is an H-SFN and wherein a second paging hyper-frame time indication is determined using the H-SFN of the first paging hyper-frame and the eDRX time.

27. The UE of claim 19, wherein the first paging interval of the plurality of paging intervals comprises a first paging frame, and wherein the processor circuitry is configured to process a paging signal received in at least one subframe of the first paging frame.