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Bluetooth speaker 3.0 version and 4.0 version of the difference

  • Author:Benson
  • Release on :2017-02-10

Bluetooth 3.0 uses Wi-Fi technology, greatly improving the transmission speed. Bluetooth 3.0 devices will be able to connect to other devices via Wi-Fi for data transfer. The following tell you about Bluetooth v3.0 and Bluetooth v4.0 difference.

s7 bluetoorh speaker

Bluetooth 4.0 in the 3.0 version based on the addition of another layer of functional structure, while introducing a low-power mode, open the low-power mode, the Bluetooth device power consumption will be greatly reduced.

Bluetooth 4.0 main features:

1. ultra-low peak, average and standby mode power consumption

2. the use of standard button batteries can run a year or even years

3. low cost

4. different manufacturers of equipment interactivity

5. wireless coverage enhancement

6. fully backward compatible

7. low latency (APT-X)

Bluetooth 4.0 Bluetooth 3.0 relative to the main upgrade:

1. speed: support 1Mbps data transfer rate under the ultra-short packet, at least eight eight-bit, up to 27. All connections use Bluetooth 2.1 to join the slow breathing mode (sniff subrating) to achieve ultra-low duty cycle.

2. frequency hopping: the use of all Bluetooth specification version of the common adaptive frequency hopping to minimize and other 2.4GHz ISM band wireless technology crosstalk.

3. the main control: more intelligent, you can sleep for a long time, only the need to perform the action when the wake.

4. the delay: the shortest in 3 ms to complete the connection settings and start transmitting data.

5. the scope: to improve the modulation index, the maximum range of more than 100 meters.

6. robustness: all data packets are used 24-bitCRC parity, to ensure maximum protection against interference.

7. security: the use of AES-128 CCM encryption algorithm for packet encryption and authentication.

8. Topology: Each packet is received using 32-bit addressing each time, in theory, can connect billions of devices; optimized for one-to-one connections, and supports one-to-many connections to the star topology; using fast connections and , The data can be transferred within the mesh topology without the need to maintain a complex mesh network.