Deactivation timer management and cross carrier scheduling in a wireless device and wireless network

• US 10,321,398 B2
• Filed: 09/11/2017
• Issued: 06/11/2019
• Est. Priority Date: 09/10/2016
• Status: Active Grant

• Current Assignee: Ofinno, LLC
• Original Assignee: Ofinno, LLC
• Inventors: Dinan, Esmael Hejazi
• Primary Examiner(s): Lee, Chi Ho A
• Application Number:
  US15/701,074
• Publication Number:
  US 20180077644A1
• Time in Patent Office: 638 Days
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• 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: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/1273 of downlink 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 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/53 based on regulatory allocation policies
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A wireless device receives RRC message(s) with configuration parameters comprising deactivation timer value(s) for a first deactivation timer of a first cell and a second deactivation timer of a second cell, and cross carrier scheduling parameter(s). A first control channel of the first cell carries downlink scheduling information via a downlink data channel of the first cell. A second control channel of the second cell carries uplink scheduling information via an uplink data channel of the first cell. The first and second deactivation timers restart in response to receiving a first DCI for uplink transmission on the first cell. The first deactivation timer and not the second deactivation timer restart in response to receiving a second DCI for downlink transmission on the first cell received. The first cell deactivates in response to the first deactivation timer expiring. The second cell deactivate in response to the second deactivation timer expiring.

Claims

1. A method comprising:

receiving, by a wireless device, at least one radio resource control (RRC) message comprising configuration parameters of a plurality of cells comprising a first cell and a second cell, the configuration parameters comprising;

at least one deactivation timer value for a first deactivation timer of the first cell and a second deactivation timer of the second cell; and

at least one cross carrier scheduling parameter indicating a configuration of cross carrier scheduling, wherein;

a first control channel of the first cell carries downlink scheduling information for packets received by the wireless device via a downlink data channel of the first cell; and

a second control channel of the second cell carries uplink scheduling information for second packets transmitted by the wireless device via an uplink data channel of the first cell;

receiving a first downlink control information (DCI) for uplink transmission on the first cell;

restarting the first deactivation timer and the second deactivation timer in response to the first DCI;

receiving a second DCI for downlink transmission on the first cell;

restarting the first deactivation timer and not the second deactivation timer in response to the second DCI;

deactivating the first cell in response to the first deactivation timer expiring; and

deactivating the second cell in response to the second deactivation timer expiring.

2. The method of claim 1, wherein the first DCI comprises:

a first field indicating an uplink resource block assignment; and

a first trigger field indicating that the first DCI is triggered in response to a trigger.

3. The method of claim 1, wherein the first cell is a licensed assisted access (LAA) cell.

4. The method of claim 1, wherein the second cell is a licensed cell.

5. The method of claim 1, wherein the first DCI indicates a modulation and coding scheme for transmission of one or more transport blocks.

6. The method of claim 1, further comprising receiving, via a common search space of a control channel of the first cell, a third DCI comprising a second trigger field indicating a second trigger, when the first DCI indicates that the first DCI is a triggered DCI.

7. The method of claim 1, wherein the first DCI comprises a field indicating a time interval during which a trigger is received.

8. The method of claim 1, further comprising:

receiving a media access control control element (MAC CE) indicating activation of the first cell; and

starting the first deactivation timer in response to receiving the MAC CE.

9. The method of claim 1, wherein the first DCI comprises:

a first field indicating an uplink resource block assignment; and

a first trigger field indicating that the first DCI is triggered in response to a second trigger.

10. A wireless device comprising:

one or more processors;

memory storing instructions that, when executed by the one or more processors, cause the wireless device to;

receive at least one radio resource control (RRC) message comprising configuration parameters of a plurality of cells comprising a first cell and a second cell, the configuration parameters comprising;

at least one deactivation timer value for a first deactivation timer of the first cell and a second deactivation timer of the second cell; and

at least one cross carrier scheduling parameter indicating a configuration of cross carrier scheduling, wherein;

a first control channel of the first cell carries downlink scheduling information for packets received by the wireless device via a downlink data channel of the first cell; and

a second control channel of the second cell carries uplink scheduling information for second packets transmitted by the wireless device via an uplink data channel of the first cell;

receive a first downlink control information (DCI) for uplink transmission on the first cell;

restart the first deactivation timer and the second deactivation timer in response to the first DCI;

receive a second DCI for downlink transmission on the first cell;

restart the first deactivation timer and not the second deactivation timer in response to the second DCI;

deactivate the first cell in response to the first deactivation timer expiring; and

deactivate the second cell in response to the second deactivation timer expiring.

11. The wireless device of claim 10, wherein the first DCI comprises:

a first field indicating an uplink resource block assignment; and

a first trigger field indicating that the first DCI is triggered in response to a trigger.

12. The wireless device of claim 10, wherein the first cell is a licensed assisted access (LAA) cell.

13. The wireless device of claim 10, wherein the second cell is a licensed cell.

14. The wireless device of claim 10, wherein the first DCI indicates a modulation and coding scheme for transmission of one or more transport blocks.

15. The wireless device of claim 10, wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive, via a common search space of a control channel of the first cell, a third DCI comprising a second trigger field indicating a second trigger, when the first DCI indicates that the first DCI is a triggered DCI.

16. The wireless device of claim 10, wherein the first DCI comprises a field indicating a time interval during which a trigger is received.

17. The wireless device of claim 10, further comprising:

receiving a media access control control element (MAC CE) indicating activation of the first cell; and

starting the first deactivation timer in response to receiving the MAC CE.

18. The wireless device of claim 10, wherein the first DCI comprises:

a first field indicating an uplink resource block assignment; and

a first trigger field indicating that the first DCI is triggered in response to a second trigger.

19. A method comprising:

transmitting, by a base station, at least one radio resource control (RRC) message comprising configuration parameters of a plurality of cells comprising a first cell and a second cell, the configuration parameters comprising;

at least one deactivation timer value for a first deactivation timer of the first cell and a second deactivation timer of the second cell; and

at least one cross carrier scheduling parameter indicating a configuration of cross carrier scheduling, wherein;

a first control channel of the first cell carries downlink scheduling information for packets received by the wireless device via a downlink data channel of the first cell; and

a second control channel of the second cell carries uplink scheduling information for second packets transmitted by the wireless device via an uplink data channel of the first cell;

transmitting a first downlink control information (DCI) for uplink transmission on the first cell;

restarting the first deactivation timer and the second deactivation timer in response to the first DCI;

transmitting a second DCI for downlink transmission on the first cell;

restarting the first deactivation timer and not the second deactivation timer in response to the second DCI;

deactivating a status of the first cell in response to the first deactivation timer expiring; and

deactivating a status of the second cell in response to the second deactivation timer expiring.

20. The method of claim 19, wherein the first DCI comprises:

a first field indicating an uplink resource block assignment; and

a first trigger field indicating that the first DCI is triggered in response to a trigger.

21. The method of claim 19, wherein the first cell is a licensed assisted access (LAA) cell.

22. The method of claim 19, wherein the second cell is a licensed cell.