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, configuration parameters of a cell, wherein the cell comprises a first bandwidth part (BWP) and a second BWP;
activating the first BWP and the second BWP;
determining, based on a first downlink control channel configuration of the first BWP and a second downlink control channel configuration of the second BWP, a BWP, of the first BWP and the second BWP, for radio link monitoring for the cell;
measuring, during a time period that the first BWP and the second BWP are active, one or more reference signals associated with the determined BWP;
determining, based on the measuring, a radio link failure for the cell; and
initiating, based on the radio link failure for the cell, a connection re-establishment procedure.
2. The method of claim 1 , wherein the determining the BWP for the radio link monitoring for the cell is further based on:
a first radio interface type on the first BWP; and
a second radio interface type on the second BWP.
3. The method of claim 1 , wherein the first downlink control channel configuration of the first BWP and the second downlink control channel configuration of the second BWP comprises at least one of:
a first BWP index of the first BWP and a second BWP index of the second BWP;
a first numerology index of the first BWP and a second numerology index of the second BWP;
a first service type on the first BWP and a second service type on the second BWP; or
a radio link monitoring reference signal configuration.
4. The method of claim 1 , wherein the initiating the connection re-establishment procedure comprises sending a preamble associated with a random access procedure.
5. The method of claim 1 , wherein the one or more reference signals associated with the determined BWP comprise at least one of:
a synchronization signal block; or
a channel state information reference signal.
6. The method of claim 1 , wherein the configuration parameters indicate at least one of:
a first reference signal associated with the first BWP; and
a second reference signal associated with the second BWP.
7. The method of claim 1 , wherein the cell comprises at least one of:
a primary cell; or
a primary secondary cell.
8. The method of claim 1 , wherein the determining the BWP for radio link monitoring for the cell is further based on at least one of:
the determined BWP being configured with downlink control channel resources;
the determined BWP being configured with a common search space set for downlink channel monitoring; or
the determined BWP being configured with reference signals for radio link monitoring.
9. The method of claim 1 , further comprising:
monitoring, based on the activating the first BWP, a first downlink control channel on the first BWP for first downlink control information indicating resource allocation of the first BWP; and
monitoring, based on the activating the second BWP, a second downlink control channel on the second BWP for second downlink control information indicating resource allocation of the second BWP.
10. The method of claim 1 , further comprising determining whether a radio link quality of the cell for a time period satisfies:
a first threshold associated with a first block error rate; and
a second threshold associated with a second block error rate.
11. The method of claim 1 , further comprising:
determining at least one of:
at least one first indication, based on a radio link quality not satisfying a first threshold; or
at least one second indication, based on the radio link quality satisfying a second threshold; and
determining at least one of:
a radio link failure event has occurred, based on a first quantity of the at least one first indications; or
a radio link failure event has not occurred, based on a second quantity of the at least one second indications.
12. A method comprising:
receiving, by a wireless device, configuration parameters for a first bandwidth part (BWP) of a cell and for a second BWP of the cell;
activating the first BWP and the second BWP;
determining, based on a first radio interface type associated with the first BWP and a second radio interface type associated with the second BWP, a BWP, of the first BWP and the second BWP, for radio link monitoring for the cell;
measuring, during a time period that the first BWP and the second BWP are active, one or more reference signals associated with the determined BWP;
determining, based on the measuring, a radio link failure for the cell; and
sending, based on the radio link failure for the cell, a preamble associated with a random access procedure.
13. The method of claim 12 , wherein the first radio interface type associated with the first BWP comprises at least one of:
an Uu radio interface between a base station and the wireless device; and
a sidelink radio interface between the wireless device and a second wireless device.
14. The method of claim 13 , wherein the second radio interface type associated with the second BWP comprises at least one of:
an Uu radio interface between a base station and the wireless device; and
a sidelink radio interface between the wireless device and a second wireless device.
15. The method of claim 12 , wherein the determining the BWP for the radio link monitoring for the cell is further based on the BWP comprising a Uu radio interface type.
16. The method of claim 12 , wherein the activating the first BWP and the second BWP comprises:
activating the first BWP at a first time interval; and
activating the second BWP at a second time interval that at least partially overlaps with the first time interval.
17. A method comprising:
receiving, by a wireless device, configuration parameters for a first bandwidth part (BWP) of a cell and for a second BWP of the cell;
activating the first BWP and the second BWP;
determining, based on one or more criteria, a BWP for radio link monitoring for the cell, wherein the one or more criteria comprises at least one of:
a first BWP index of the first BWP and a second BWP index of the second BWP;
a first numerology index of the first BWP and a second numerology index of the second BWP;
a first service type on the first BWP and a second service type on the second BWP; or
a radio link monitoring reference signal configuration;
measuring, during a time period that the first BWP and the second BWP are active, one or more reference signals associated with the determined BWP;
determining, based on the measuring, a radio link failure for the cell; and
sending, based on the radio link failure for the cell, a preamble associated with a random access procedure.
18. The method of claim 17 , wherein the determining is further based on at least one of:
the determined BWP being configured with downlink control channel resources;
the determined BWP being configured with a common search space set for downlink channel monitoring; or
the determined BWP being configured with reference signals for radio link monitoring.
19. The method of claim 17 , wherein the determined BWP is configured with at least one of:
downlink control channel resources; or
a common search space for downlink control channel monitoring.
20. The method of claim 17 , wherein the configuration parameters indicate at least one of:
a first reference signal associated with the first BWP; and
a second reference signal associated with the second BWP.