Beam reporting method and related communication apparatus

A communication apparatus, comprising:

• an interface circuit;
• a processing circuit, coupled to the interface circuit and configured to execute instructions;
• and
• a storage circuit, coupled to the processing circuit and stores the instructions of:
• receiving a plurality of reference signals (RSs) from a wireless network;
• taking a measurement on the plurality of RSs, to generate a measurement result;
• performing a sorting on a plurality of beams according to the measurement result, to generate a plurality of sorted beams;
• detecting a risk of a ping-pong of beam to be reported according to the plurality of sorted beams to generate a risk result, when each measurement is done;
• and
• reporting at least one of the plurality of sorted beams to the wireless network according to the risk result.