Bluetooth 5.0 is a Bluetooth technology standard proposed by the Bluetooth Technology Alliance in 2016. Bluetooth 5.0 has corresponding improvements and optimizations for the speed of low-power devices. Bluetooth 5.0 combines wifi to assist indoor positioning, improves transmission speed, and increases effective working distance. Compared with Bluetooth 4.2 version, Bluetooth 5.0 has the following improvements:
1. Bluetooth 5.0 pairing “many-to-many” transmission mode
Bluetooth Mesh technology changes transmission applications. This technology breaks the traditional “1-to-1” pairing between Bluetooth devices and transforms it into a “many-to-many” signal transmission mode. The bandwidth of Bluetooth 5.0 is 8 times wider than that of Bluetooth 4.2. Therefore, a smartphone using Bluetooth 5.0 will be able to output audio to two Bluetooth speakers at the same time, making it easier to set up surround sound effects.
2. Bluetooth 5.0 has faster transmission interval, nearly 2 times the speed
Compared with Bluetooth 4.2, Bluetooth 5.0 theoretically doubles the transmission rate, from 1Mbps to 2Mbps. However, due to some technical reasons, in most actual applications, the transmission speed of Bluetooth 5.0 may be only about 1.7 times that of version 4.2.
Bluetooth 5.0 transmission distance is further extended to 300 meters
3. Bluetooth 5.0 accurate positioning close to 1 meter
Bluetooth 5.0 improves the accuracy of indoor positioning and can optimize navigation functions. With Wi-Fi, it can easily achieve Bluetooth indoor positioning functions with an accuracy close to 1 meter. Bluetooth 5.0 achieves low power consumption. In theory, devices using Bluetooth 5.0 will be able to significantly improve battery life. Not only will the standby power consumption of electronic devices be reduced, but low-power consumption optimization planning at the radio frequency physical layer will also significantly reduce Bluetooth energy consumption. .
4. Bluetooth 5.0 has increased anti-interference capabilities
Many wireless devices currently use the 2.4GHz frequency band, and the new technology used in Bluetooth 5 can greatly reduce the transmission power loss caused by interference in the 2.4GHz frequency band.
5. Strong foundation for Bluetooth 5.0 smart home
Because Bluetooth 5.0 will increase the transmission distance to a distance of up to 300 meters, this will make it compete for Wi-Fi’s position in the smart home market. Family members can control all smart products in the home through Bluetooth. Smart light bulbs, smart speakers, smart door locks, etc. will all be able to connect using Bluetooth. In addition, compared with the power-consuming Wi-Fi technology and the low-power consumption characteristics of Bluetooth, the advantages of using it in smart home products are very significant.
Theoretically, the effective transmission distance of 5.0 is 300 meters, which is four times that of the previous 4.2 version. However, in actual application, the transmission distance is affected by the power and antenna of the Bluetooth device. For example, in order to save power and shorten working time, the actual transmission radius of existing Bluetooth headsets is generally 10 meters, regardless of whether they use Bluetooth 5.0 or Bluetooth 4.2.Keywords: 4G network IO controller