A Performance Analysis of Bluetooth Broadcasting Scheme

This paper studies the performance of current Bluetooth broadcasting scheme. Current Bluetooth broadcasting scheme may repeat transmitting (broadcasting) the same broadcasted baseband ACL packet several times to increase the reliability of broadcast over an unreliable Bluetooth radio channel. We have analyzed the effects of different Bluetooth baseband ACL packet types, each of which has a different size and error protection scheme, on the broadcast performance in terms of reliability and effective throughput that can be achieved over a given radio channel characteristics (i.e. a given bit error rate). As the result of our analysis, we determined the optimal packet type and retransmission count combinations that can provide the highest effective throughput values for various practical BER ranges. These results can be used at Bluetooth baseband layer to dynamically adapt to varying channel conditions and to achieve a good broadcast performance