Things will build an interconnection of all things in the world, through perception, analysis and control technology, the whole world is connected to the physical network and provide unprecedented technical support, of which short-range wireless communication plays a vital role. Especially in the current fastest growing field of intelligent home networking, wireless technology protocol range of standard dispute intensified.
Currently, a variety of short-range wireless transmission technology in the field of IOT has been widely used, more fierce competition, including ZigBee, Bluetooth, WiFi and other wireless communications technology, and based on these technologies developed from the new technologies. At the current smart home networking industry, the three wireless communication technology in the field of intelligent home has been used, in which ZigBee wireless communication technology in recent years gradually increase market share. Of course, to construct a network linking all interconnected to the current three wireless communication technology has its own strengths and weaknesses.
In order to quickly adapt to the development of the networking industry, the current ZigBee, WiFi and Bluetooth technologies on its own technical standards for perfect, we were introduced ZigBee3.0, WiFi Halow, Bluetooth 5.0.
WiFi is a wireless extension of Ethernet technology, is currently in the field of intelligent hardware such as WiFi smart socket, WiFi cameras have been using. However, in the field of intelligent home networking, WiFi because of the safety factor low power consumption and device scalability and other factors, not the most suitable for a wireless networking technology in the field of intelligent home.
In order to meet the interconnection between devices more suitable for wireless technology, WiFi Alliance earlier this year released a 802.11ah WiFi standard, “Halow”.
WiFi Halow more suitable for low-power, long-distance networking equipment. Halow using the 900MHz band, we used less than WiFi 2.4GHz and 5.0GHz bands, which means lower power consumption. At the same time, the coverage Halow up to 1 km, the signal is stronger.
WiFi WiFi Halow compared to the previous agreement, on the wall capability and power consumption performance has been improved. According to WiFi alliance respond, this technology need to wait until 2018 for the formal market. But while WiFi wireless transmission performance has been improved, but did not mention a new generation of Halow security issues of wireless communication, while Halow will also run on unlicensed bands, which means that will be interference between different products . For the smart home networking devices, security and anti-jamming capability is the most important development of the smart home, so the WiFi protocol to get large-scale use, security and anti-jamming capability in the field of things you need to be addressed problem.
Bluetooth is everyone living in a very common wireless communication technologies, such as Bluetooth speakers, Bluetooth bracelet equipment and systems on the car. In ZigBee, WiFi and Bluetooth three wireless communication devices, Bluetooth is a means of communication belonging to the shortest distance from point to point communications.
June 16, the Bluetooth SIG has released a new generation of Bluetooth technology standard Bluetooth 5.0. Signal range Bluetooth 5.0 enhanced 2-fold, which means that its communication distance becomes long, low-power transmission speed is 4 times the existing standards, but also has an accurate indoor positioning capabilities.
Bluetooth communication distance may be raised, but this does not point to point communication with large-scale network topology capabilities. For example, a perfect smart home solution even need hundreds of devices, Bluetooth 5.0 can not achieve large-scale network equipment. At the same time, the power consumption of Bluetooth devices is usually about a month, for electronic equipment and intelligent hardware, a Bluetooth 5.0 performance to better meet the needs of hardware, but in the field of intelligent home, Bluetooth 5.0 also need to be tested.
ZigBee is based on the IEEE802.15.4 standard low-power local area network protocol, which is characterized by low power, low complexity, independent networking, low rates and high security, is a very suitable for wireless communication protocol of the Internet of Things. Especially in recent years, ZigBee wireless communication technology in the field of IOT’s market share improved significantly. However, ZigBee has a different application layer based on different technical standards, such as ZigBee HA, ZigBee LL, ZigBee BA, etc., so different manufacturers of smart home devices can not achieve interoperability. In order to solve the interoperability problem, ZigBee3.0 standard was born.
ZigBee3.0 based on IEEE802.15.4 standard, the working frequency of 2.4 GHz (universal frequency) using the ZigBee PRO networks, ZigBee Alliance from the market-leading wireless standard uniform came, it is the first unified, open and complete wireless networking product development solutions. It extends from the physical layer to the application layer, interoperability certification and brand building, including for the increasing number of market segments, covering the broadest range of device types, including home automation, lighting, energy management, intelligent home appliances, security devices, sensors and healthcare monitoring products.
ZigBee3.0 standard means ZigBee application layer with a unified standard, smart home devices from any two companies worldwide can achieve interoperability, interconnection products to solve problems in the field of intelligent home, making it more suitable for the Internet of Things. Of course, this does not mean ZigBee, Bluetooth, compatible between WiFi, smart home based ZigBee3.0 still will face with Bluetooth, WiFi devices can not be interoperability problems.
Wireless networking standards in the field of contention has been staged, the current WiFi, ZigBee and Bluetooth have launched a new generation of standards have been improved in performance, this side also confirmed the networking industry development prospects. However, for now, Philips, Schneider Electric, IOT sensing (Wulian), board member of the United States, SmartThings etc. ZigBee Alliance, are actively layout of things, they develop or accelerate ZigBee3.0 smart home technology in terms of floor, in the field of IOT strengthen ZigBee’s competitiveness.
As for future networking FIELD, WiFi Halow, Bluetooth 5.0 and ZigBee3.0 in the end who decides? We might as well wait and see.