Failure detection and recovery for multiple active resources
Wireless communications using multiple active resources (e.g., bandwidth parts (BWPs)) are described. A wireless device may perform failure event detection, such as radio link monitoring (RLM) and/or beam failure detection (BFD), jointly or separately for multiple active resources (e.g., BWPs) based on one or more criteria.
1. A method comprising:
receiving, by a wireless device, an indication to activate a first downlink bandwidth part (BWP) for a cell and a second downlink BWP for the cell;
determining a radio link failure for the cell during a time period in which the wireless device performs measurements of one or more reference signals associated with the first downlink BWP; and
based on the determined radio link failure for the cell based on the measurements of the one or more reference signals associated with the first downlink BWP, sending one or more messages associated with connection re-establishment.
2. The method of claim 1 , wherein the one or more reference signals associated with the first downlink BWP comprises at least one of:
a synchronization signal block; or
a channel state information reference signal.
3. The method of claim 1 , wherein the one or more messages associated with connection re-establishment comprises at least one of:
a preamble associated with a random access procedure;
a RRC connection message;
a RRC reconnection message; or
a handover request.
4. The method of claim 1 , further comprising:
monitoring a first downlink control channel on the first downlink BWP for first downlink control information indicating resource allocation of the first downlink BWP.
5. The method of claim 1 , wherein the determining the radio link failure for the cell comprises at least one of:
determining that a radio link quality of the cell for a time period satisfies a first threshold associated with a block error rate; or
determining a radio link failure event based on a quantity of at least one indication satisfying a second threshold.
6. The method of claim 1 , further comprising:
receiving a downlink control channel configuration of the first downlink BWP; and
measuring the first downlink BWP based on the downlink control channel configuration.
7. The method of claim 1 , further comprising:
measuring the first downlink BWP based on a radio interface type associated with the first downlink BWP.
8. The method of claim 7 , wherein the determining the first downlink BWP is further based on at least one of:
a downlink control channel configuration of the second downlink BWP;
a first radio interface type on the first downlink BWP; or
a second radio interface type on the second downlink BWP.
9. A method comprising:
during a time period in which a first downlink bandwidth part (BWP) of a cell and a second downlink BWP of the cell are both active and the first downlink BWP, but not the second downlink BWP, is being measured, determining, by a wireless device, a radio link failure for the cell based on measurements of the first downlink BWP; and
based on the determined radio link failure for the cell, sending one or more messages associated with connection re-establishment.
10. The method of claim 9 , wherein the one or more messages associated with connection re-establishment comprises at least one of:
a preamble associated with a random access procedure;
a RRC connection message;
a RRC reconnection message; or
a handover request.
11. The method of claim 9 , further comprising:
monitoring a first downlink control channel on the first downlink BWP for first downlink control information indicating resource allocation of the first downlink BWP.
12. The method of claim 9 , wherein the determining the radio link failure for the cell comprises at least one of:
determining that a radio link quality of the cell for a time period satisfies a first threshold associated with a block error rate; or
determining a radio link failure event based on a quantity of at least one indication satisfying a second threshold.
13. The method of claim 9 , further comprising:
receiving a downlink control channel configuration of the first downlink BWP; and
measuring the first downlink BWP based on the downlink control channel configuration.
14. The method of claim 9 , further comprising:
measuring the first downlink BWP based on a radio interface type associated with the first downlink BWP.
15. 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 an indication to activate a first downlink bandwidth part (BWP) for a cell and a second downlink BWP for the cell;
determine a radio link failure for the cell during a time period in which the wireless device performs measurements of one or more reference signals associated with the first downlink BWP; and
send, based on the determined radio link failure for the cell based on the measurements of the one or more reference signals associated with the first downlink BWP, one or more messages associated with connection re-establishment.
16. The wireless device of claim 15 , wherein the one or more reference signals associated with the first downlink BWP comprises at least one of:
a synchronization signal block; or
a channel state information reference signal.
17. The wireless device of claim 15 , wherein the one or more messages associated with connection re-establishment comprises at least one of:
a preamble associated with a random access procedure;
a RRC connection message;
a RRC reconnection message; or
a handover request.
18. The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
monitor a first downlink control channel on the first downlink BWP for first downlink control information indicating resource allocation of the first downlink BWP.
19. The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, cause the wireless device to determine the radio link failure for the cell based on at least one of:
determining that a radio link quality of the cell for a time period satisfies a first threshold associated with a block error rate; or
determining a radio link failure event based on a quantity of at least one indication satisfying a second threshold.
20. The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
receive a downlink control channel configuration of the first downlink BWP; and
measure the first downlink BWP based on the downlink control channel configuration.
21. The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, cause the wireless device to measure the first downlink BWP based on a radio interface type associated with the first downlink BWP.
22. The wireless device of claim 21 , wherein the instructions, when executed by the one or more processors, cause the wireless device to determine the first downlink BWP further based on at least one of:
a downlink control channel configuration of the second downlink BWP;
a first radio interface type on the first downlink BWP; or
a second radio interface type on the second downlink BWP.
23. 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:
determine, during a time period in which a first downlink bandwidth part (BWP) of a cell and a second downlink BWP of the cell are both active and the first downlink BWP, but not the second downlink BWP, is being measured, a radio link failure for the cell based on measurements of the first downlink BWP; and
send, based on the determined radio link failure for the cell, one or more messages associated with connection re-establishment.
24. The wireless device of claim 23 , wherein the one or more messages associated with connection re-establishment comprises at least one of:
a preamble associated with a random access procedure;
a RRC connection message;
a RRC reconnection message; or
a handover request.
25. The wireless device of claim 23 , wherein the instructions, when executed by the one or more processors, cause the wireless device to monitor a first downlink control channel on the first downlink BWP for first downlink control information indicating resource allocation of the first downlink BWP.
26. The wireless device of claim 23 , wherein the instructions, when executed by the one or more processors, cause the wireless device to determine the radio link failure for the cell based on at least one of:
determining that a radio link quality of the cell for a time period satisfies a first threshold associated with a block error rate; or
determining a radio link failure event based on a quantity of at least one indication satisfying a second threshold.
27. The wireless device of claim 23 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
receive a downlink control channel configuration of the first downlink BWP; and
measure the first downlink BWP based on the downlink control channel configuration.
28. The wireless device of claim 23 , wherein the instructions, when executed by the one or more processors, cause the wireless device to measure the first downlink BWP based on a radio interface type associated with the first downlink BWP.