The main changes are (1) double the communication speed, (4) communication distance extended fourfold, and (3) advertisement packet capacity increased eightfold. Bluetooth v5.0 is a standard released in December 2016. It has the following three features over Bluetooth v4.2: (1) communication speed is two times faster, (2) communication distance is four times longer, and (3) advertisement packet capacity is eight times larger. Double the communication speed has been achieved by adding 2 Mbps (originally 1 Mbps) as the symbol rate. The quadruple distance is achieved by adding error correction codes to improve error resilience. Instead, the data rate is decreased. LE Coded PHY (500 kbps, 125 kbps) corresponding to this error correction code has been added, and the data rate to enable the quadruple distance is 125 kbps. The data capacity has been expanded from 31 octets to 255 octets with the advertisement packet capacity increased eightfold. This allows broadcasting of more information than ever before.
