Communication apparatus and bluetooth ID packet recognition method thereof

A method for recognizing an ID packet comprised in an RF signal, comprising:

• receiving an RF signal;
• converting the RF signal to generate a converted signal with reference to a channel select signal, wherein the channel select signal alternately sweeps a plurality of scan trains during a scan frame, wherein each of the scan trains comprises a plurality of channels and a total channel number of the plurality of scan trains is N, where 32≦N≦78;
• performing a scan procedure on the converted signal;
• and
• determining whether the RF signal comprises an ID packet according to the scan results.

A method for recognizing a Bluetooth ID packet, comprising:

• receiving an RF signal;
• converting the RF signal to generate a converted signal with reference to a channel select signal, wherein the channel select signal alternately sweeps a plurality of scan trains of N Bluetooth hopping channels during a scan frame, where 32≦N≦78, and each of the scan trains comprises a plurality of Bluetooth hopping channels;
• performing a scan procedure on the converted signal;
• and
• determining whether the RF signal comprises a Bluetooth ID packet according to the scan results.