Beam failure recovery procedure in carrier aggregation
A wireless device triggers transmission of a scheduling request (SR) based on triggering a beam failure recovery (BFR) of a secondary cell. A configured transmission of the SR based on transmitting a medium access control protocol data unit (MAC PDU) is stopped. The transmission comprises a BFR medium access control control element (BFR MAC CE) comprising information of the BFR triggered prior to assembling of the MAC PDU.
1. A method comprising:
triggering, by a wireless device, transmission of a scheduling request (SR) based on triggering a beam failure recovery (BFR) of a secondary cell; and
stopping a configured transmission of the SR based on transmitting a medium access control protocol data unit (MAC PDU) comprising a BFR medium access control control element (BFR MAC CE) comprising information of the BFR.
2. The method of claim 1 , further comprising triggering transmission of a second SR based on triggering a second BFR of a second secondary cell.
3. The method of claim 2 , further comprising transmitting the second SR.
4. The method of claim 3 , wherein the transmitting the second SR is based on the triggering of the second BFR occurring after assembling of the MAC PDU.
5. The method of claim 4 , wherein the BFR MAC CE does not comprise information of the second BFR triggered after assembling of the MAC PDU.
6. The method of claim 5 , further comprising continuing the second BFR.
7. The method of claim 6 , wherein the transmitting the second SR is based on the continuing the second BFR.
8. The method of claim 1 , wherein the stopping the configured transmission of the SR comprises completing the BFR of the secondary cell.
9. The method of claim 1 , wherein the BFR MAC CE comprising the information of the BFR comprises that the BFR MAC CE comprises a first field indicating a first cell index of the secondary cell with the BFR.
10. The method of claim 9 , wherein the BFR MAC CE comprising the information of the BFR comprises the BFR MAC CE comprising a second field indicating a candidate reference signal index indicating a candidate reference signal for the secondary cell with the BFR.
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:
trigger transmission of a scheduling request (SR) based on triggering a beam failure recovery (BFR) of a secondary cell; and
stop a configured transmission of the SR based on transmitting a medium access control protocol data unit (MAC PDU) comprising a BFR medium access control control element (BFR MAC CE) comprising information of the BFR.
12. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to trigger transmission of a second SR based on triggering a second BFR of a second secondary cell.
13. The wireless device of claim 12 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to transmit the second SR.
14. The wireless device of claim 13 , wherein the transmission of the second SR is based on the triggering of the second BFR occurring after assembling of the MAC PDU.
15. The wireless device of claim 14 , wherein the BFR MAC CE does not comprise information of the second BFR triggered after assembling of the MAC PDU.
16. The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to continue the second BFR.
17. The wireless device of claim 16 , wherein the transmission of the second SR is based on the continuation of the second BFR.
18. The wireless device of claim 11 , wherein the stopping of the configured transmission of the SR comprises completing the BFR of the secondary cell.
19. The wireless device of claim 11 , wherein the BFR MAC CE comprising the information of the BFR comprises the BFR MAC CE comprising a first field indicating a first cell index of the secondary cell with the BFR.
20. A system comprising:
a base station; and
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 the base station, one or more configuration parameters indicating one or more resources for a configured transmission of a scheduling request (SR);
trigger transmission of the SR based on triggering a beam failure recovery (BFR) of a secondary cell; and
stop the configured transmission of the SR based on transmitting a medium access control protocol data unit (MAC PDU) comprising a BFR medium access control control element (BFR MAC CE) comprising information of the BFR.