Alternatively, all functional blocks of the Bluetooth host device 110 may be integrated into a single IC chip, a mobile communication device (e.g., a cell phone), a wearable device, a tablet computer, a notebook computer, a desktop computer, an audio broadcast system, a voice guidance system, a voice broadcasting system, a vehicular communication device, a satellite communication device, a smart TC, a Bluetooth smart speaker, or the like.
In practice, each of the first communication circuit 121 and the second communication circuit 131 in the Bluetooth device set 102 may be realized with an appropriate Bluetooth communication circuit capable of supporting the Bluetooth communication protocol of the Bluetooth Core Specification Version 5.2 or newer versions. If needed, the first communication circuit 121 and the second communication circuit 131 may be respectively coupled with additional antennas (not shown in figures).
Each of the first cypher key generation circuit 123 and the second cypher key generation circuit 133 may be realized with appropriate digital computing circuits, microprocessors, security modules, or ASICs having cypher key computing capabilities.
Each of the first control circuit 125 and the second control circuit 135 may be realized with an appropriate packet demodulation circuit, a digital computing circuit, a microprocessor, a single processor module, a combination of multiple processor modules, or an ASIC having appropriate computing capabilities and capable of parsing and generating Bluetooth packets adopting the BLE Audio technology specified by the Bluetooth Core Specification Version 5.2 or newer versions.