Bluetooth low energy (BLE) preemptive card position Internet of Things design opportunities. Bluetooth technology began with the fourth-generation BLE version, and the speed of software and hardware specification update has been accelerating, and the development towards IP mesh network architecture, coupled with its high penetration rate in the mobile market, has attracted more and more Chip vendors are investing in BLE product development. At this stage, the development momentum of BLE has obviously passed ZigBee, and it is expected to earn the first bucket of gold for the interconnection of Internet of Things.
Wu Weidong, director of the Greater China and South Asia region of STMicroelectronics (MEMS) and Sensors Group, said that low-power design is the first element in building an IoT environment, including sensors, embedded processors and radios. RF) chips must move in the direction of research and development that significantly reduces power consumption. As a result, the Bluetooth SIG proposes a new generation of ultra-low-power BLE standards and accelerates the development of the Bluetooth 4.1/4.2 specification supporting the mesh network to address the huge interconnection requirements of IoT devices. It is difficult to expand and manage multiple nodes in a star network topology.
Wu Weidong (right), director of the Greater China and South Asia region of STMicroelectronics' MEMS and sensor business group, believes that BLE has the advantage of low-power transmission, and it can quickly improve the disadvantages of nodes by improving the mesh network architecture. The rise of the Internet of Things market.
Coincidentally, the ZigBee Alliance based on the IEEE 802.15.4 series of standards also actively promotes the mesh networking solution, and Google and Nest have launched the Thread Alliance, announcing that it will adopt the 802.15.4 specification to develop a complete IoT protocol. The standard has made the situation of the two wireless technology camps of Bluetooth and ZigBee more mature.
In fact, Bluetooth and ZigBee are similar in terms of technology, and the battles in smart home, smart lighting and other applications have never stopped. Yu Zhengde, senior technology marketing manager of STMicroelectronics, pointed out that for the mesh network architecture, the chip organizations of various standards organizations and supporters are still in the same stage at present, and there is no unified standard yet; however, the Bluetooth SIG has invested 1 since the 4.0 version. ～2 years to develop mesh network self-networking, multi-hop routing, and multi-node addressing and management technical specifications, as well as specific application examples (Profile), technology maturity is obvious to all, tempting major chip vendors to join the development ranks.
It is reported that including Broadcom, Nordic and British Cambridge Wireless Semiconductor (CSR) (in consideration of the merger with Qualcomm), and Dialog and Microchip, which have only recently emerged in the Bluetooth chip market. And communication chip vendors such as Cypress have launched or are developing Bluetooth 4.0/4.1 mesh network hardware and software platforms. Wu Weidong also revealed that the company has also followed up with the release of Bluetooth 4.0/4.1 network processor and developed related software stacking solutions, card Bluetooth network design opportunities.
Yu Zhengde emphasized that as the hardware platform supply chain grows, the Bluetooth SIG continues to expand the application of mesh network applications, including Find Me, smart home appliances or lighting control, ambient temperature and humidity / UV light and heart rate. A wide range of specific solutions, such as monitoring, are open reference examples, which make Bluetooth's acceptance in the Internet of Things market rise rapidly and seize the opportunity of the paradigm shift of the Internet of Things technology.
In contrast, ZigBee, which is also optimistic about the importance of the Internet of Things, is not the result of its poor performance in the mobile market, and the relatively closed design of hardware and software. Recently, it is the key to the Internet of Things such as home and wearable devices. The application market has been beaten by Bluetooth all the time; although Google has recently been betting more resources to be compatible with ZigBee's Thread technology, there has been no significant progress so far, which has also affected the willingness of chip vendors and system operators to invest.
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