Specifically, when at least one of the at least one RS, the at least one RS set, the at least one BWP, the at least one cell, the at least one carrier, the at least one bandwidth, or the at least one bandwidth combination is reset, reconfigured, activated, deactivated, or switched, or when an RLM configuration parameter corresponding to the RLM is reset or reconfigured, or when at least one of the RS, the RS set, the BWP, the cell, the carrier, the bandwidth, or the bandwidth combination corresponding to the RLM is reset or reconfigured, resetting the RLM process is triggered.

Resetting the RLM process includes stopping a timer (that is, stopping timing by the timer) and resetting an out-of-sync counter and/or an in-sync counter.

When a reference state includes BFD, an execution process of the terminal is similar to the execution process of the terminal performed when the reference state includes the RLM. Details are not described herein again.

It should be noted that the foregoing embodiment of this disclosure may be used in 5G, or eLTE, or another scenario with similar configuration.

In some embodiments of this disclosure, a detection process corresponding to the RLM (or the BFD) is performed by using the monitoring configuration parameter of the RLM (or the BFD), to resolve a problem of determining, when there are a plurality of RLM processes (or a plurality of BFD processes) for a plurality of RSs, BWPs, cells, and the like, which RLM process (or which BFD process) the terminal uses. This improves a communication procedure and guarantees reliability of network communication.