At present, many international and domestic communication standards are competing on the same stage. The 2G network allowed domestic operators to earn a lot of money through the thumb economy. Many people are optimistic about this market, and they have derived many stars such as ring tones and MMS. Products, however, to this day, 2G network has completed the mission of network infrastructure construction, is dying, and is on the road of gradual withdrawal from the historical stage. Who could imagine this scene ten years ago?
Today's network communication technology is also changing with each passing day. There are well-known WIFI, Bluetooth, Zigbee, 2G, 3G, 4G cellular networks, as well as emerging LiFi, AirGig, quantum communication, etc., and there are some comparisons derived from the eve of the Internet of Things industry. Promising communication technologies, such as commercial applications represented by the narrowband Internet of Things NB-IOT, are developed based on different application scenarios to solve different real-world problems. Let us see how these technologies should be applied.
BluetoothThe important short-range communication technology has been criticized for its excessive power consumption. After more than 20 years of evolution, it has entered the 4.0+ version. The transmission speed and power control have been reborn. Please see the detailed parameters:
Standard: Bluetooth 4.2 core specification
Frequency: 2.4GHz (ISM)
Range: 50-150 meters (smart / BLE)
Data rate: 1Mbps (smart / BLE)
ZigbeeThe technology is marketed earlier, and is widely used in the industrial field. It is based on the IEEE802.15.4 protocol and is applied to relatively infrequent data exchange within 100M. It has the advantages of low power consumption, high security, high scalability, and high node count. The latest version 3.0, which integrates various Zigbee-based wireless standards into a single standard, looks at the parameters together:
Standard: ZigBee 3.0 based on IEEE802.15.4
Frequency: 2.4GHz
Range: 10-100 meters
Data rate: 250kbps
Z waveZ-Wave is a low-power RF communication technology used primarily for home automation of products such as lamp controllers and sensors. Supports a full mesh network without the need for a coordinator node and is very scalable to control up to 232 devices. Currently, the only chip maker is Sigma Designs.
Standard: Z-Wave Alliance ZAD12837 / ITU-TG. 9959
Frequency: 900MHz (ISM)
Range: 30m
Data rate: 9.6 / 40 / 100kbit / s
6LowPAN6LowPAN is an IPv6 low-power wireless personal area network, which is based on IP (Internet Protocol) technology. A key attribute of the standard is the IPv6 (Internet Protocol Version 6) stack, which enables the IoT to be highly scalable and self-healing.
Standard: RFC6282
Frequency: (Applicable to all other network media, including Bluetooth Smart (2.4GHz) or ZigBee or Low Power RF (Sub 1GHz)
Range: N / A
Data rate: N / A
ThreadThread launched in mid-2014, is a new 6LowPAN-based IPv6 network protocol for home automation environments. It is based on various standards, including IEEE802.15.4 (as wireless air interface protocol), IPv6 and 6LoWPAN, and provides a flexible IP-based solution for the Internet of Things.
Standard: Thread, based on IEEE802.15.4 and 6LowPAN
Frequency: 2.4GHz (ISM)
Range: N / A
Data rate: N / A
WIFIAt present, WIFI technology has a wide infrastructure and provides fast data transmission and processing of large amounts of data. WiFi is rapidly popularized in office or home environments in a local area network. It is a technology developed to solve the problem of file transmission. In terms of IOT applications, This technology consumes a lot of power and there is no solution to effectively reduce power consumption.
Standard: Based on 802.11n (the most common use today)
Frequency: 2.4GHz and 5GHz bands
Range: about 50m
Data rate: 600 Mbps maximum, but depending on the channel frequency and number of antennas used (the latest 802.11-ac standard should provide 500 Mbps to 1 Gbps), 150-200 Mbps is more typical.
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