Operations on ta timer expiration in multi-ta for mdci mtrp

An apparatus for communication at a network entity, comprising:

• memory;
• and
• at least one processor coupled to the memory and configured to:
• transmit a first timing advance (TA) group (TAG) configuration associated with a first transmission reception point (TRP) associated with the network entity;
• and
• transmit a second TAG configuration associated with a second TRP associated with the network entity, the first TAG configuration and the second TAG configuration being associated with a bandwidth part (BWP) or a component carrier (CC), the first TAG configuration being associated with a first time alignment timer and the second TAG configuration being associated with a second time alignment timer, wherein at least one of the first time alignment timer or the second time alignment timer is associated with one or more timer expiration operations for a serving cell.

A method of communication at a user equipment (UE), comprising:

• receiving, from a network entity, a first timing advance (TA) group (TAG) configuration associated with a first transmission reception point (TRP) associated with the network entity;
• receiving, from the network entity, a second TAG configuration associated with a second TRP associated with the network entity, the first TAG configuration and the second TAG configuration being associated with a bandwidth part (BWP) or a component carrier (CC), the first TAG configuration being associated with a first time alignment timer and the second TAG configuration being associated with a second time alignment timer;
• and
• performing one or more timer expiration operations for a serving cell based on at least one of the first time alignment timer or the second time alignment timer.