Selecting and using a subset of beam failure detection resources

A method, comprising:

• receiving at a user equipment configuration for M active transmission configuration indication states;
• selecting, according to one or more pre-defined rules, based on the configured M active transmission configuration indication states, a subset of N of the set of M transmission configuration indication states, where N<M;
• and
• determining by the user equipment failure detection resources based on the selected N transmission configuration indication states.

An apparatus, comprising:

• one or more processors;
• and
• one or more memories including computer program code,
• the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus at least to:
• configure, by a base station, a user equipment with configuration for M active transmission configuration indication states;
• select, based on the configured M active transmission configuration indication states, a subset of N of the M transmission configuration indication states, where N<M;
• and
• determine, by the base station, failure detection resources based on the selecting N transmission configuration indication states.

An apparatus, comprising:

• one or more processors;
• and
• one or more memories including computer program code,
• the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus at least to:
• receive, at a user equipment, configuration for M active transmission configuration indication states;
• select, according to one or more pre-defined rules, based on the configured M active transmission configuration indication states, a subset of N of the set of M transmission configuration indication states, where N<M;
• and
• determine, by the user equipment, failure detection resources based on the selected N transmission configuration indication states.