Carrier aggregation radio configuration
A base station transmits to a wireless device at least one first message comprising configuration parameters of a plurality of cells. The plurality of cells is grouped into a plurality of physical uplink control channel (PUCCH) groups comprising a primary PUCCH group comprising a primary cell with a primary PUCCH received by the base station and a secondary PUCCH group. The secondary PUCCH group comprising a PUCCH secondary cell with a secondary PUCCH received by the base station and one or more other secondary cells. The base station detects a radio link issue with the PUCCH secondary cell. The base station transmits at least one media access control (MAC) command configured to deactivate at least one of the one or more other secondary cells in the secondary PUCCH group in response to the radio link issue with the PUCCH secondary cell.
1. A method comprising:
transmitting, by a base station, parameters of cells grouped into control channel groups comprising:
a primary control channel group; and
a secondary control channel group comprising:
a control channel secondary cell with a secondary control channel; and
a secondary cell;
detecting, by the base station, a radio link issue with the control channel secondary cell of a wireless device; and
transmitting, by the base station, at least one command to deactivate the secondary cell for the wireless device in response to the radio link issue.
2. The method of claim 1 , wherein the at least one command is further configured to deactivate the control channel secondary cell.
3. The method of claim 1 , wherein one or more other secondary cells of the secondary control channel group have an acceptable radio link quality.
4. The method of claim 1 , wherein the detecting the radio link issue is based at least on one of the following:
detecting a loss of control channel secondary cell signals;
detecting a loss of synchronization with the control channel secondary cell signals; and
measuring an error rate on the control channel secondary cell above a second value.
5. The method of claim 1 , wherein the detecting the radio link issue is based at least on one of the following:
measuring an interference on the control channel secondary cell above a second value;
receiving a channel quality indicator feedback indicating a signal quality on the control channel secondary cell lower than a third value; and
receiving measurement reports indicating a signal quality on the control channel secondary cell lower than a fourth value.
6. The method of claim 1 , wherein the detecting the radio link issue occurs when the base station receives another message from the wireless device.
7. The method of claim 1 , wherein the at least one command comprises a bitmap indicating deactivation of one or more other secondary cells of the secondary control channel group.
8. The method of claim 1 , wherein the control channel groups are physical uplink control channel groups.
9. The method of claim 1 , wherein the command is a media access control (MAC) command.
10. The method of claim 1 , wherein the radio link issue is based on measuring a signal quality of the control channel secondary cell.
11. A method comprising:
transmitting, by a base station, parameters of cells grouped into control channel groups comprising:
a primary control channel group; and
a secondary control channel group comprising:
a control channel secondary cell with a secondary control channel; and
a secondary cell;
detecting, by the base station, a radio link issue with the control channel secondary cell of a wireless device; and
transmitting, by the base station, a message to release the secondary cell for the wireless device in response to the radio link issue.
12. The method of claim 11 , wherein at least one second message is further configured to release the control channel secondary cell.
13. The method of claim 11 , wherein one or more other secondary cells have an acceptable radio link quality.
14. The method of claim 11 , wherein the detecting the radio link issue is based at least on one of the following:
detecting a loss of control channel secondary cell signals;
detecting a loss of synchronization with the control channel secondary cell signals; and
measuring an error rate on the control channel secondary cell above a first value.
15. The method of claim 11 , wherein the detecting the radio link issue is based at least on one of the following:
measuring an interference on the control channel secondary cell above a second value;
receiving a channel quality indicator feedback indicating a signal quality on the control channel secondary cell lower than a third value; and
receiving measurement reports indicating a signal quality on the control channel secondary cell lower than a fourth value.
16. The method of claim 11 , wherein the detecting the radio link issue occurs in response to the base station receiving another message from the wireless device.
17. The method of claim 11 , wherein the transmitting the message comprises at least one cell index of the secondary cell.
18. The method of claim 11 , wherein the secondary control channel is a secondary physical uplink control channel.
19. The method of claim 11 , wherein the primary control channel group comprises a primary cell with a primary physical uplink control channel received by the base station.
20. The method of claim 11 , wherein the radio link issue is based on measuring a signal quality of the control channel secondary cell.