Secondary cell modification mechanism

1. A method comprising:

transmitting, by a base station to a wireless device, at least one first message comprising one or more parameters of cells comprising a secondary cell with no configured physical uplink control channel (PUCCH);

determining, by the base station, to reconfigure the secondary cell to a PUCCH secondary cell with a secondary PUCCH;

in response to the determining, transmitting at least one second message to:

release the secondary cell for the wireless device; and

add the PUCCH secondary cell for the wireless device; and

receiving channel state information via the PUCCH secondary cell.

2. The method of claim 1 , wherein the one or more parameters comprise:

a plurality of common parameters; and

a plurality of dedicated parameters.

3. The method of claim 1 , further comprising:

transmitting a third message causing the release of the PUCCH secondary cell in the wireless device; and

transmitting a fourth message causing configuration of the secondary cell with no PUCCH resources.

4. The method of claim 1 , further comprising:

transmitting a third message causing the release of the PUCCH secondary cell in the wireless device; and

transmitting a fourth message causing configuration of the secondary cell with PUCCH resources.

5. The method of claim 1 , wherein the PUCCH secondary cell is deactivated when the PUCCH secondary cell is added to the wireless device.

6. The method of claim 1 , wherein the cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising:

a primary PUCCH group comprising a primary cell with a primary PUCCH transmitted to the base station; and

a secondary PUCCH group comprising the PUCCH secondary cell with the secondary PUCCH transmitted to the base station.

7. The method of claim 1 , wherein the channel state information comprises a precoding matrix indicator, a rank indicator, and a channel quality indicator.

8. A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to:

transmit, to a wireless device, at least one first message comprising one or more parameters of cells comprising a secondary cell with no configured physical uplink control channel (PUCCH);

determine to reconfigure the secondary cell to a PUCCH secondary cell with a secondary PUCCH;

in response to the base station determining to reconfigure the secondary cell to the PUCCH secondary cell with the secondary PUCCH, transmit at least one second message to:

release the secondary cell for the wireless device; and

add the PUCCH secondary cell for the wireless device; and

receive channel state information via the PUCCH secondary cell.

9. The base station of claim 8 , wherein the one or more parameters comprise:

a plurality of common parameters; and

a plurality of dedicated parameters.

10. The base station of claim 8 , wherein the instructions, when executed, further cause the base station to:

transmit a third message causing the release of the PUCCH secondary cell in the wireless device; and

transmit a fourth message causing configuration of the secondary cell with no PUCCH resources.

11. The base station of claim 8 , wherein the instructions, when executed, further cause the base station to:

transmit a third message causing the release of the PUCCH secondary cell in the wireless device; and

transmit a fourth message causing configuration of the secondary cell with PUCCH resources.

12. The base station of claim 8 , wherein the PUCCH secondary cell is deactivated when the PUCCH secondary cell is added to the wireless device.

13. The base station of claim 8 , wherein the channel state information comprises a precoding matrix indicator, a rank indicator, and a channel quality indicator.

14. A method comprising:

receiving, by a wireless device from a base station, at least one first message comprising one or more parameters of cells comprising a secondary cell with no configured physical uplink control channel (PUCCH);

receiving at least one second message comprising parameters for reconfiguring the secondary cell to a PUCCH secondary cell with a secondary PUCCH;

releasing, by the wireless device, the secondary cell in response to the at least one second message;

adding, by the wireless device and after the releasing, the PUCCH secondary cell with the secondary PUCCH; and

transmitting channel state information via the PUCCH secondary cell.

15. The method of claim 14 , wherein the one or more parameters comprise:

a plurality of common parameters; and

a plurality of dedicated parameters.

16. The method of claim 14 , further comprising:

receiving a third message causing the release of the PUCCH secondary cell in the wireless device; and

receiving a fourth message causing configuration of the secondary cell with no PUCCH resources.

17. The method of claim 14 , further comprising:

receiving a third message causing the release of the PUCCH secondary cell in the wireless device; and

receiving a fourth message causing configuration of the secondary cell with PUCCH resources.

18. The method of claim 14 , wherein the PUCCH secondary cell is deactivated when the PUCCH secondary cell is added.

19. The method of claim 14 , wherein the cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising:

a primary PUCCH group comprising a primary cell with a primary PUCCH transmitted to the base station; and

a secondary PUCCH group comprising the PUCCH secondary cell with the secondary PUCCH transmitted to the base station.

20. The method of claim 14 , wherein the channel state information comprises a precoding matrix indicator, a rank indicator, and a channel quality indicator.