Bluetooth Low Energy (BLE) technology has become one of the leading communication standards in the Internet of Things. Not long ago, the Bluetooth SIG shared some advances in the Bluetooth 5.0 standard, and the Bluetooth Technology Alliance said the Bluetooth 5.0 standard will be available in late 2016 or early 2017. The new standard will be more comprehensive than Bluetooth 4.2, with a significant improvement in communication speed, communication distance and communication capacity. At the same time, Bluetooth 5.0 allows data that does not need to be paired to accept beacons, such as advertisements, Beacon, location information, etc., which is 8 times higher. In addition, Bluetooth 5.0 also supports indoor positioning and navigation functions, which can be used as indoor navigation beacons or similar positioning devices. Combined with wifi, indoor positioning with an accuracy of less than 1 meter can be achieved. This way, you can find routes in devices that support Bluetooth 5.0 in those very large malls. However, in this release, the Bluetooth Technology Alliance did not mention this feature. In addition, Bluetooth 5.0 has a lot of underlying optimization for the Internet of Things, and strives to serve smart homes with lower power consumption and higher performance. The battle for IoT communication standards is becoming more and more fierce. The new features of Bluetooth 5.0 for BLE provide new ammunition for Bluetooth technology. With the help of these new features, BLE may become the ultimate wireless communication standard for the Internet of Things. So what changes does Bluetooth 5.0 specifically bring? Let us take a sneak peek. Double the communication speed means halving power consumption In many IoT applications, communication speed requirements are not high, because most IoT applications do not need to transmit streaming media, and wearable products are typical examples of such applications. Taking the sports bracelet as an example, the health data mainly includes information such as pulse, number of steps, exercise mode, etc. The amount of data transmitted is very small, so the current Bluetooth standard fully satisfies the communication bandwidth requirement of the wristband and the smartphone or other device. Bluetooth 5.0 doubles the communication speed (BLE speed is increased from 25Mb/s to 50Mb/s). For most BLE applications, the Bluetooth 4.2 standard is sufficient, so the speed increase will not bring user experience. improve. On the other hand, power consumption is one of the biggest headaches for wearable products. Life time is a key factor in the success of a bracelet. If you double the communication speed, the real communication time can be reduced to half of the original, so this is equivalent to reducing the power consumption to nearly half. Halving power consumption means that the battery life is doubled, which is a great benefit for wearable products. In addition, speed increases will make software or firmware updates less time consuming. Although software updates are not a common function, the amount of data that needs to be downloaded during software update is large, so the increase in communication speed can also effectively reduce the power consumption during software update. Four times the communication distance means that Bluetooth will grab Wi-Fi's share in the smart home market In the field of wearables, Bluetooth is already the most widely used technical standard. Bluetooth technology has low power consumption and fast transmission speed, so it has been successful in the consumer Internet of Things field. However, if you look at the entire IoT market, engineers still have many choices. No one can predict which technical standards can be used in this. The constantly evolving market dominates the world. So now many products have to support multiple connection standards to adapt to more application environments. For example, the big-selling Nest smart thermostat supports three modes of communication: Wi-Fi, Zigbee and Bluetooth. Bluetooth 5.0 will increase the communication distance by four times. This means that BLE technology can finally be used in smart homes. Users can control their smart products through BLE, from smart bulbs to smart locks. Now smart devices in a family can be connected with BLE. Compared to the power-hungry WiFi technology, the advantages of BLE for smart home products are obvious. Increasing the communication distance is also good news for other applications of BLE. Whether it is a Bluetooth mouse or a wearable device, users can no longer worry about dropping the distance because of the distance. This is especially important for Bluetooth headsets. Increase communication capacity and reduce connection trouble The new Bluetooth standard has increased data broadcast capacity by a factor of eight (800%), which will significantly change the way Bluetooth devices interact, according to the Bluetooth Technology Alliance. In the past, BLE communication required prior pairing. After Bluetooth 5.0 increased communication capacity, BLE devices will have connecTIonless capabilities to provide beacon, geographic information and navigation services. Devices that support connectionless transmission mode do not need to install any programs before communication, and do not need to perform pairing and other setting actions in advance. Network technology expands the scope of application In addition, one point not mentioned in the Bluetooth Technology Alliance statement is mesh networking, but Bluetooth networking was announced in November 2015. If the networking technology is included in Bluetooth 5.0, the application scope of BLE will be further expanded, and networking technologies will be required in application scenarios such as item tracking and smart waste management. Bluetooth networking has been announced in November 2015 Can BLE dominate the world? There are still too many variables in the future, and the smart connected products that are constantly growing and changing are still in infancy. Even if you only look at the next few years, it is difficult to say whether a certain technical standard will still have vitality. However, the new Bluetooth standard has significantly improved communication speed, power consumption, communication distance and capacity, which is the first opportunity for BLE in the IoT wireless connection standard.
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It was previously reported that the Bluetooth Technology Alliance officially released the latest Bluetooth 5.0 technology standard in London. The new Bluetooth 5.0 standard will be officially launched at the end of this year or early 2017, and will also update devices that support the standard. The official said that the new Bluetooth 5.0 standard will far exceed the current version, that is, the Bluetooth 4.2LE version, including 4 times the effective transmission distance will be 4.2LE version, that is, in theory, Bluetooth transmission and reception The effective working distance between the devices can reach 300 meters. The transmission speed will be twice that of the 4.2LE version and the upper speed limit is 24Mbps. 
Bluetooth 5 will increase the distance and speed of low-power connections by 4x and 2x, respectively, while the connectionless broadcast data transmission will increase by eight times. In addition, it maintains industry-leading power performance. Along with the substantial increase in data transmission, the data that can be transmitted will be richer and more intelligent, and will redefine the way Bluetooth devices transmit information, from the “device with APP†mode to a “connectionless†object. Networked mode, reducing the need to download applications or applications to connect to devices.