Bluetooth Low Energy (BLE) technology is the primary communication standard for most Internet of Things (IoT). A few days ago, the Bluetooth Technology Alliance (SIG) released some information about Bluetooth 5. This is the name of the new Bluetooth Technology Alliance product. The product is scheduled to be launched by the end of 2016 or early 2017.
The statement said that the new generation of Bluetooth technology has made great improvements based on existing specifications. Speed, distance and data broadcast performance are reported to have increased significantly. Next, let's take a look at how the improvements in the above areas are how to upgrade existing applications and make BLE better than other similar technologies.
In the fierce competition for the standard voice of IoT communications, these new advantages may help BLE take the lead and make it the ultimate standard for IoT.
Double the speed means halving energy consumption
In many IoT applications, speed is not a big deal. This is basically the case for most application cases that do not use streaming media. For example, we can look at wearable products like fitness wristbands. Data transmission such as pulse, number of steps, and exercise methods is small. The current Bluetooth standard is fast enough to pass data to a user's smartphone or other device in real-time or after workout. Double the transfer speed does not significantly improve the user experience.
On the other hand, power consumption is a major obstacle to the insurmountable wearable products. The life time of a fitness wristband is the key to its success or failure. Since the speed of data transfer is now doubled, the effective communication time can be reduced by up to 50%. At the same time, it can effectively reduce the power consumption of the product (up to half). And half of the power consumption means that the battery life of the product before charging is doubled. Now, this should not be underestimated.
Another advantage of faster data transfer for wearable products is that their software or firmware upgrades are faster. When the software or firmware is upgraded, the data transfer volume of the wearable product is larger than that of the daily use, so the speed increase can effectively reduce the power consumption.
Four times the distance means that the user can control all the smart devices in the home
Bluetooth is not only one of the must-have technologies for wearable products, but also widely used in smart home appliances. Bluetooth technology has the advantages of low power consumption and fast transmission, and the existing consumer electronic devices generally adopt Bluetooth technology, which makes many products favor it. But the IoT world is constantly evolving, so it's hard to predict which technology will be widely adopted to replace other technologies.
As a result, many products on the market today carry a variety of similar connection technologies. For example, the popular Nest Smart Thermostat supports three communication standards: Wi-Fi, Zigbee, and BLE.
The Bluetooth 5 release statement states that the communication distance of the new standard is four times the original distance. This means that in addition to the benefits of existing BLE, users can control smart home products from light bulbs to smart locks anywhere in the home. Controlling home devices via Wi-Fi has its main advantages, but the increased communication distance makes more efficient BLEs dwarf Wi-Fi, which consumes a lot of energy.
For many other application cases, the increase in communication distance is also good news. From simple devices in the remote control, keyboard and mouse kits to wearable products, especially smart headphones, if the user is too far away from the connectable device, communication with the device will be disconnected.
Improvements in data broadcast performance mean that connections are less subject to interference.
Another major improvement in the new standard is that its data broadcast performance has increased by a factor of eight. The Bluetooth Technology Alliance predicts that this will lead to major changes in how users interact with devices. Improved data broadcast performance enables "non-connected" services such as beacons, geolocation information, and navigation, eliminating the need for BLE-compatible devices. The concept of "non-connected" services is to receive data and use these services without installing other applications and without setting up connections.
Another desirable feature not covered in the Bluetooth 5 brief statement is mesh network support. This feature was actually launched in November 2015. If the new standard also includes this feature, BLE will become a more advantageous communication technology in more applications such as asset tracking and spam management that require mesh networks.
Will BLE eliminate other connection technologies?
Of course, the outlook is still not clear. The ever-changing smart Internet of Things world is still in its infancy. It is difficult to determine which trends and standards will still be popular tomorrow, not to mention the situation in the next few years. But from the huge improvements in speed, power consumption, distance and data broadcast performance, BLE seems to remain unabated.
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