MECHANISMS TO OPTIMIZE AND ALIGN DISCONTINUOUS RECEPTION CONFIGURATION OF DEVICE-TO-DEVICE CAPABLE USER EQUIPMENT

• US 20150245295A1
• Filed: 12/23/2014
• Published: 08/27/2015
• Est. Priority Date: 02/24/2014
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Jha, Satish Chandra, Koc, Ali Taha, Sivanesan, Kathiravetpillai, Rashid, Mohammad Mamunur, Vannithamby, Rath
• Granted Patent: US 9,992,744 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0241 where no transmission is received, e.g. out of range of the transmitter
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

An Evolved Node-B (eNB) to communicate with a User Equipment (UE) on a Long Term Evolution (LTE) network, the eNB comprising: a first logic to determine whether a UE is capable of receiving and transmitting data at substantially the same time or receiving data at two different frequencies at the same time; and a second logic to configure for the UE a Discontinuous Reception (DRX) configuration such that a DRX ON duration overlaps with a discovery opportunity duration (DOD) according to the determination from the first logic. In another example, the eNB comprises: logic to configure for the UE a DRX configuration such that a DRX ON duration window abuts with a DOD window according to the determination from the first logic. In another example, the eNB operable to perform a method comprising: configuring, for a UE, a DRX configuration such that a DRX ON duration overlaps with a DOD.

Claims

1. An Evolved Node-B (eNB) to communicate with a User Equipment (UE) on a network, the eNB comprising:

a first logic to determine whether the UE is capable of receiving and transmitting data at substantially the same time or receiving data at two different frequencies at the same time; and

a second logic to configure for the UE a Discontinuous Reception (DRX) configuration such that a DRX ON duration overlaps with a discovery opportunity duration (DOD) according to the determination from the first logic.

2. The eNB of claim 1, wherein the second logic is operable to extend a duration of the DRX ON duration to be substantially equal to the DOD during a DOD period.

3. The eNB of claim 1, wherein the second logic is operable to apply normal DRX ON duration during a non-DOD period.

4. The eNB of claim 1, wherein the second logic is operable to extend duration of the DRX ON duration and duration of DRX Inactivity Timer so that sum of the DRX ON duration and DRX Inactivity Timer duration is to be substantially equal to the DOD.

5. The eNB of claim 1, wherein the second logic is operable to configure DRX configuration such that the UE is active due to one of:

UE being in DRX ON duration, DRX inactivity Timer is running, or DRX short cycle is running during the DOD.

6. The eNB of claim 1 comprising logic to align an end of a Long DRX cycle with a start of the DOD starting point.

7. The eNB of claim 2, wherein the logic to make Long DRX cycle and discovery periodicity integer multiples of each other.

8. The eNB of claim 1 comprising logic to adjust an offset associated with start of DRX cycle.

9. The eNB of claim 1 comprising logic to receive, from the UE, a preference for being configured with discovery specific DRX.

10. The eNB of claim 9, wherein the preference is received by one of:

Radio Resource Control (RRC) message Information Element (IE), or Medium Access Control (MAC) control element (CE).

11. The eNB of claim 1 comprising logic to send the DRX configuration for the UE in a downlink Radio Resource Control (RRC) message.

12. An Evolved Node-B (eNB) to communicate with a User Equipment (UE) on a network, the eNB comprising:

a first logic to determine whether a User Equipment (UE) is capable of receiving and transmitting data at substantially the same time; and

a second logic to configure for the UE a Discontinuous Reception (DRX) configuration such that a DRX ON duration window abuts with a discovery opportunity duration (DOD) window according to the determination from the first logic.

13. The eNB of claim 12, wherein the second logic is operable to align the DRX ON duration window before or after the DOD window.

14. The eNB of claim 12 comprising logic to receive, from the UE, a preference for being configured with discovery specific DRX.

15. The eNB of claim 14 wherein the UE is capable of identifying or deciding its need or preference for being configured with the discovery specific DRX.

16. The eNB of claim 14, wherein the preference received by one of:

Radio Resource Control (RRC) message Information Element (IE), or

Medium Access Control (MAC) control element (CE).

17. A machine readable storage media having machine executable instructions, that when executed, cause one or more processors to perform an operation comprising:

configuring, for a User Equipment (UE), a Discontinuous Reception (DRX) configuration such that a DRX ON duration overlaps with a discovery opportunity duration (DOD).

18. The machine readable storage media of claim 17 having further machine executable instructions, that when executed, cause a machine to perform an operation comprising:

determining whether the UE is capable of receiving and transmitting data at substantially the same time or receiving data at two different frequencies at the same time, and configuring the DRX configuration according to the determination.

19. The machine readable storage media of claim 17 having further machine executable instructions, that when executed, cause the one or more processors to perform an operation comprising extending duration of the DRX ON duration to be substantially equal to the DOD.

20. The machine readable storage media of claim 19 having further machine executable instructions, that when executed, cause a machine to perform an operation comprising extending duration of the DRX ON duration and duration of DRX Inactivity Timer so that sum of the DRX ON duration and DRX Inactivity Timer duration is to be substantially equal to the DOD.

21. The machine readable storage media of claim 19 having further machine executable instructions, that when executed, cause a machine to perform an operation comprising aligning an end of a Long DRX cycle with a start of the DOD starting point.

22. The machine readable storage media of claim 19 having further machine executable instructions, that when executed, cause a machine to perform an operation comprising establishing Long DRX cycle and discovery periodicity to be integer multiples of each other.

23. The machine readable storage media of claim 19 having further machine executable instructions, that when executed, cause the one or more processors to perform an operation comprising adjusting an offset associated with start of a DRX cycle.

24. The machine readable storage media of claim 19 having further machine executable instructions, that when executed, cause the one or more processors to perform an operation comprising receiving, from the UE, a preference for being configured with discovery specific DRX.

25. The machine readable storage media of claim 24, wherein the preference is received by one of:

Radio Resource Control (RRC) message Information Element (IE), or

Medium Access Control (MAC) control element (CE).

26. A machine readable storage media having machine executable instructions, that when executed, cause one or more processors to perform an operation comprising:

configuring, for a User Equipment (UE), a Discontinuous Reception (DRX) configuration such that a DRC ON duration abuts with a discovery opportunity duration (DOD).

27. The machine readable storage media of claim 26 having further machine executable instructions, that when executed, cause the one or more processors to perform an operation comprising aligning the DRX ON duration window before or after the DOD window.

28. The machine readable storage media of claim 26 having further machine executable instructions, that when executed, cause the one or more processors to perform an operation comprising receiving, from the UE, a preference for being configured with discovery specific DRX.

29. The machine readable storage media of claim 28, wherein the preference received by one of:

Radio Resource Control (RRC) message Information Element (IE), or

Medium Access Control (MAC) control element (CE).