Radio configuration in a carrier aggregation
View Patent ↗A plurality of cells are grouped into a plurality of physical uplink control channel (PUCCH) groups comprising a primary PUCCH group and a secondary PUCCH group. The base station detects a radio link issue with a PUCCH secondary cell while one or more other cells in the secondary PUCCH group have acceptable radio link quality. The base station transmits at least one second message configured to release at least one of the one or more other cells in the secondary PUCCH group.
1. A method comprising:
transmitting, by a base station to a wireless device, at least one first message comprising configuration parameters of a plurality of cells, wherein the plurality of 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 received by the base station; and
a secondary PUCCH group comprising a PUCCH secondary cell with a secondary PUCCH received by the base station;
detecting a radio link issue with the PUCCH secondary cell while one or more other cells in the secondary PUCCH group have acceptable radio link quality; and
transmitting at least one second message configured to release at least one of the one or more other cells in the secondary PUCCH group.
2. The method of claim 1 , wherein the at least one second message is further configured to release the PUCCH secondary cell.
3. The method of claim 1 , wherein the configuration parameters comprise:
a plurality of common parameters; and
a plurality of dedicated parameters.
4. The method of claim 1 , wherein the detecting the radio link issue employs at least one of the following:
detecting a loss of PUCCH secondary cell signals;
detecting a loss of synchronization with the PUCCH secondary cell signals; and
measuring high error rates on the PUCCH secondary cell.
5. The method of claim 1 , wherein the detecting the radio link issue employs at least one of the following:
measuring high interference on the PUCCH secondary cell;
receiving a channel quality indicator (CQI) feedback indicating poor signal quality on the PUCCH secondary cell; and
receiving measurement reports indicating poor signal quality on the PUCCH secondary cell.
6. The method of claim 1 , wherein the detecting the radio link issue occurs when the base station receives a third message from the wireless device.
7. The method of claim 1 , wherein transmitting the at least one second message comprises at least one cell index of the at least one of the one or more other cells.
8. A method comprising:
transmitting, by a base station to a wireless device, at least one first message comprising configuration parameters of a plurality of cells, wherein the plurality of 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 received by the base station; and
a secondary PUCCH group comprising a PUCCH secondary cell with a secondary PUCCH received by the base station;
detecting a radio link issue with the PUCCH secondary cell while one or more other cells in the secondary PUCCH group have acceptable radio link quality; and
transmitting at least one second media access control (MAC) command configured to deactivate at least one of the one or more other cells in the secondary PUCCH group.
9. The method of claim 8 , wherein at least one second MAC command is further configured to deactivate the PUCCH secondary cell.
10. The method of claim 8 , wherein the configuration parameters comprise:
a plurality of common parameters; and
a plurality of dedicated parameters.
11. The method of claim 8 , wherein the detecting the radio link issue employs at least one of the following:
detecting a loss of PUCCH secondary cell signals;
detecting a loss of synchronization with the PUCCH secondary cell signals; and
measuring high error rates on the PUCCH secondary cell.
12. The method of claim 8 , wherein the detecting the radio link issue employs at least one of the following:
measuring high interference on the PUCCH secondary cell;
receiving a channel quality indicator (CQI) feedback indicating poor signal quality on the PUCCH secondary cell; and
receiving measurement reports indicating poor signal quality on the PUCCH secondary cell.
13. The method of claim 8 , wherein the detecting the radio link issue occurs when the base station receives a third message from the wireless device.
14. The method of claim 8 , wherein transmitting the at least one second MAC command comprises a bitmap indicating deactivation of the at least one of the one or more other cells.
15. A base station comprising:
one or more processors; and
memory storing instructions that, when executed, cause the base station to:
transmit, to a wireless device, at least one first message comprising configuration parameters of a plurality of cells, wherein the plurality of 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 received by the base station; and
a secondary PUCCH group comprising a PUCCH secondary cell with a secondary PUCCH received by the base station;
detect a radio link issue with the PUCCH secondary cell, while one or more other cells in the secondary PUCCH group has acceptable radio link quality; and
transmit at least one second MAC command configured to deactivate at least one of the one or more other cells in the secondary PUCCH group.
16. The base station of claim 15 , wherein at least one second MAC command is further configured to deactivate the PUCCH secondary cell.
17. The base station of claim 15 , wherein the configuration parameters comprise:
a plurality of common parameters; and
a plurality of dedicated parameters.
18. The base station of claim 15 , wherein the instructions, when executed, further cause the base station to:
detect a loss of the PUCCH secondary cell signals;
detect a loss of synchronization with the PUCCH secondary cell signals; or measure high error rates on the PUCCH secondary cell.
19. The base station of claim 15 , wherein instructions, when executed, further cause the base station to:
measure high interference on the PUCCH secondary cell;
receive a channel quality indicator (CQI) feedback indicating poor signal quality on the PUCCH secondary cell; or
receiving measurement reports indicating poor signal quality on the PUCCH secondary cell.
20. The base station of claim 15 , wherein the base station detects the radio link issue when the base station receives a third message from the wireless device.