Methods, apparatus and systems for radio link monitoring (rlm) in new radio (nr)

A method, implemented by a wireless transmit/receive unit (WTRU), to transition from a first Radio Resource Control (RRC) configuration to a second RRC configuration, as an RRC reconfiguration, the method comprising:

• receiving, by the WTRU, configuration information indicating the second RRC configuration associated with a first set of Block Error Ratio (BLER) thresholds that is different from one or more BLER thresholds associated with the first RRC configuration, wherein each respective BLER threshold of the first set of BLER thresholds is associated with a respective service type;
• generating, based on the first set of BLER thresholds after reception of the configuration information indicating the second RRC configuration, one or more in-sync indications and/or one or more out-of-sync indications;
• indicating, by the WTRU, one or more attributes associated with the one or more in-sync indications and/or the one or more out-of-sync indications;
• and
• determining, during a transition to the second RRC configuration and based on at least an existing radio link monitoring (RLM) status, whether to apply a compensation by the WTRU for a new RRC configuration process associated with the second RRC configuration.

A method, implemented by a wireless transmit/receive unit (WTRU), to transition from a first Radio Resource Control (RRC) configuration associated with first set of Block Error Ratio (BLER) thresholds to a second RRC configuration associated with second BLER thresholds, the method comprising:

• receiving configuration information indicating the second RRC configuration, wherein each respective BLER threshold of the first BLER thresholds or the second BLER thresholds is associated with a respective service type;
• determining, during a transition to the second RRC configuration based on an existing radio link monitoring (RLM) status whether to apply a compensation for a new RRC configuration process associated with the second RRC configuration;
• determining whether a Radio Link Failure (RLF) has occurred based on the second BLER thresholds associated with the second RRC configuration and the determined compensation to be applied;
• and
• sending, by the WTRU, a message, on condition that the RLF occurred.

A wireless transmit/receive unit (WTRU) comprising:

• a processor configured to determine a transition from a first radio resource control (RRC) configuration associated with a first set of block error ratio (BLER) thresholds to a second RRC configuration associated with a second set of BLER thresholds;
• a receiver configured to receive configuration information indicating the second RRC configuration, wherein each respective BLER threshold of the first set of BLER thresholds or the second set of BLER thresholds is associated with a respective service type;
• the processor further configured to determine, during the transition to the second RRC configuration based on an existing radio link monitoring (RLM) status, whether to apply a compensation for a new RRC configuration process associated with the second RRC configuration;
• and
• a transmitter configured to transmit an uplink transmission based on a determination that a radio link failure (RLF) has occurred, wherein the RLF is determined based on 1) the second set of BLER thresholds associated with the second RRC configuration and 2) the compensation to be applied.