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New Bluetooth Standard Bluetooth 2.1 + EDR
Nov 17, 2017

Currently the most widely used is the Bluetooth 2.0 + EDR standard, which was introduced in 2004 and products that support the Bluetooth 2.0 + EDR standard in 2006. Although the Bluetooth 2.0 + EDR standard has made a lot of technical improvements, the issue of the complex configuration flow and the large power consumption of the device from the 1.X standard still exists.


To improve on the current problems with Bluetooth technology, the Bluetooth Special Interest Group has introduced the Bluetooth 2.1 + EDR version of Bluetooth technology.


Improve device pairing process


Because many users encounter many problems when performing Bluetooth pairing between hardware, whether single pairing or permanent pairing, the pairing process and the necessary operations are too complicated. In the past, it was necessary to utilize the connection process Personal identification number to ensure the safety of the connection, and improved connection is automatically used after the password to be paired and connected, for example, as long as the phone option to connect to specific devices, after the determination, the phone will automatically Lists the devices available in the current environment and automatically links.


The short distance of the pairing, but also with the two Bluetooth-enabled mobile phone pairing and communication between each other NFC (Near Field CoMMunication) mechanism. NFC is a short-range wireless RFID technology that replaces traditional radio transmissions based on electromagnetic waves for short-range, 1-to-2 meter on-line applications. As the NFC mechanism controls the initial detection of the pairing, when two devices in the range are paired for transmission, simply click on the screen of the mobile phone to accept the connection. However, to use the NFC function, the system must have a built-in NFC chip or be equipped with related hardware functions.


Better power saving effect


Winnershine bluetooth headset HB702

Winnershine bluetooth headset HB703 

          

winnershine bluetooth earbuds.png


Bluetooth version 2.1 adds a Sniff Subrating feature to save power by setting the interval between two devices to verify the sending of signals. Generally speaking, after the two connected Bluetooth devices enter the standby state, the Bluetooth devices still need to determine whether they are still connected to each other by calling each other. Of course, because of this, the Bluetooth chip must remain at Working status, even if the phone's other components have entered hibernation mode. In order to improve such a situation, Bluetooth 2.1 will be between devices to confirm the signal transmission time interval from the previous version of 0.1 seconds to 0.5 seconds or so, so that the workload of the Bluetooth chip can be significantly reduced, but also can make Bluetooth more More time to completely sleep. According to official reports, using this technology, the Bluetooth device can turn on the Bluetooth standby time can be effectively extended more than 5 times.


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