CPC H04W 52/242 (2013.01) [H04W 16/28 (2013.01); H04W 52/146 (2013.01); H04W 72/02 (2013.01); H04W 74/0841 (2013.01); H04W 74/0866 (2013.01)] | 20 Claims |
1. A user equipment device (UE), comprising:
at least one antenna;
at least one radio, wherein the at least one radio is configured to perform cellular communication using at least one radio access technology (RAT);
one or more processors coupled to the at least one radio, wherein the one or more processors and the at least one radio are configured to perform voice and/or data communications;
wherein the one or more processors are configured to cause the UE to:
in response to determining that a base station serving the UE has not configured spatial relationship information for a default beam for transmissions in a component carrier (CC), determine whether a pathloss reference signal (RS) has been configured in the CC;
in response to determining that the pathloss RS has been configured in the CC, determine the default beam for transmissions based, at least in part, on the pathloss RS;
in response to determining that the pathloss RS has not been configured in the CC, determine whether any control resource sets (CORESETs) and/or transmission configuration indication (TCI) states for a physical downlink shared channel (PDSCH) in the CC have been configured; and
in response to determining that no CORESESTs and/or TCI states have been configured in the CC, determine the default beam for transmissions based, at least in part, on a physical random-access channel (PRACH) procedure.
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