PUCCH Channel State Information Transmission

• US 20190246336A1
• Filed: 04/17/2019
• Published: 08/08/2019
• Est. Priority Date: 03/16/2015
• Status: Active Grant

• Current Assignee: Ofinno, LLC
• Original Assignee: Ofinno Technologies, LLC
• Inventors: Dinan, Esmael Hejazi
• Granted Patent: US 10,674,436 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 36/04 Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/38 triggered by timers

Abstract

A wireless device receives configuration parameters of cells grouped into physical uplink control channel (PUCCH) groups comprising: a primary PUCCH group comprising a primary cell and a secondary cell; and a secondary PUCCH group comprising a PUCCH secondary cell with a secondary PUCCH. Aa first indication to activate the secondary cell is received during a first subframe. Transmission of channel state information of the secondary cell from a second subframe that is eight subframes after the first subframe is started. A second indication for activation of the PUCCH secondary cell is received during a third subframe. Transmission of channel state information for the PUCCH secondary cell is started from a fourth subframe that is a number of subframes after the third subframe. The number is based on when the wireless device successfully detects the PUCCH secondary cell.

Claims

1. 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 configuration parameters of cells grouped into physical uplink control channel (PUCCH) groups comprising;

a primary PUCCH group comprising a primary cell and a secondary cell; and

a secondary PUCCH group comprising a PUCCH secondary cell with a secondary PUCCH;

receive, during a first subframe, a first indication to activate the secondary cell;

start transmission of channel state information of the secondary cell from a second subframe that is eight subframes after the first subframe;

receive, during a third subframe, a second indication for activation of the PUCCH secondary cell; and

start transmission of channel state information for the PUCCH secondary cell from a fourth subframe that is a number of subframes after the third subframe, wherein the number is based on when the wireless device successfully detects the PUCCH secondary cell.

2. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to start transmission of channel state information of a first secondary cell of the secondary PUCCH group from the fourth subframe, wherein the second control element further indicates activation of the first secondary cell.

3. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to employ a next available uplink resource for transmitting the channel state information for the PUCCH secondary cell if there are no uplink resources for transmitting the channel state information for the PUCCH secondary cell in the fourth subframe.

4. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to start transmission of channel state information of an activated cell of the secondary PUCCH group from the fourth subframe.

5. The wireless device of claim 1, wherein the PUCCH secondary cell remains detectable during a cell activation delay.

6. The wireless device of claim 1, wherein the PUCCH secondary cell is detected on a first attempt.

7. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to transmit channel state information comprising an out of range channel quality index when no valid channel state information field with a channel quality index different from zero is available.

8. The wireless device of claim 1, wherein the instructions, when executed by the one or more processors, further cause the wireless device to:

start a first deactivation timer associated with the secondary cell in the second subframe; and

start a second deactivation timer associated with the PUCCH secondary cell in a fifth subframe that is eight subframes after the third subframe.

9. The wireless device of claim 8, wherein the instructions, when executed by the one or more processors, further cause the wireless device to start transmission of channel state information of a first secondary cell of the secondary PUCCH group from the fourth subframe, wherein the second control element further indicates activation of the first secondary cell.

10. The wireless device of claim 9, wherein the instructions, when executed by the one or more processors, further cause the wireless device to employ a next available uplink resource for transmitting the channel state information for the PUCCH secondary cell if there are no uplink resources for transmitting the channel state information for the PUCCH secondary cell in the fourth subframe.

11. 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, configuration parameters of a cells grouped into physical uplink control channel (PUCCH) groups comprising;

a primary PUCCH group comprising a primary cell and a secondary cell; and

a secondary PUCCH group comprising a PUCCH secondary cell with a secondary PUCCH;

receive, during a first subframe, a first indication to activate the secondary cell and the PUCCH secondary cell;

start transmission of channel state information of the secondary cell from a second subframe that is eight subframes after the first subframe; and

start transmission of channel state information of the PUCCH secondary cell from a third subframe that is a number of subframes after the second subframe, wherein the number is based on when the wireless device successfully detects the PUCCH secondary cell.

12. The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, further cause the wireless device to start transmission of channel state information of a first secondary cell of the secondary PUCCH group from the third subframe, wherein the first control element further indicates activation of the first secondary cell.

13. The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, further cause the wireless device to transmit channel state information comprising an out of range channel quality index when no valid channel state information field with a channel quality index different from zero is available.

14. The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, further cause the wireless device to start a first deactivation timer associated with the secondary cell in the second subframe.

15. The wireless device of claim 14, wherein the instructions, when executed by the one or more processors, further cause the wireless device to start a second deactivation timer associated with the PUCCH secondary cell in the second subframe.

16. The wireless device of claim 15, wherein the instructions, when executed by the one or more processors, further cause the wireless device to start transmission of channel state information of a first secondary cell of the secondary PUCCH group from the third subframe, wherein the first control element further indicates activation of the first secondary cell.

17. The wireless device of claim 16, wherein the instructions, when executed by the one or more processors, further cause the wireless device to transmit channel state information comprising an out of range channel quality index when no valid channel state information field with a channel quality index different from zero is available.

18. The wireless device of claim 17, wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive, during a fourth subframe, a second indication for activation of the PUCCH secondary cell.

19. The wireless device of claim 18, wherein the PUCCH secondary cell remains detectable during a cell activation delay.

20. The wireless device of claim 18, wherein the PUCCH secondary cell is detected on a first attempt.