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In ancient times, people transmitted messages through beacons and carrier pigeons. In today's Internet era, the transmission of information and data is even more varied.

When it comes to data transmission, it is inseparable from wireless Internet technology. Let's learn about it with the editor today.

Wireless Internet is the Internet established on the basis of wireless network, which is mainly composed of mobile wireless network. It is a centralized network to realize two-way data transmission of mobile devices.

According to the distance of transmission, wireless Internet technology is mainly divided into the following three categories:

Local area network: interconnected by multiple computers in a certain area into a computer group, suitable for short distances, generally used indoors, including Wi-Fi, Bluetooth, ZigBee and so on.

Wide area network: a remote network connecting computers in different regions, suitable for long distances, generally used outdoors, including 4G, 5G, etc.

Low-power WAN: long-distance low-power wireless communication network, designed for long-distance, low-bandwidth, low-power, a large number of connected Internet of things applications, including LoRa, NB-IoT and so on.

Data transmission on the Internet is like couriers delivering express deliveries. If you think of wireless Internet technology as couriers, what are their respective characteristics?

Wi-Fi courier features: fast transmission, plug and play, high family popularity

Delivery form: single-handed

Delivery speed: run fast (300 Mbps)

Shape: big hands (holding a lot of data)

Distance: good at sprinting (100-300 m)

Power consumption: high physical exertion (10-50 mA)

Bluetooth courier features: mostly used in personal use scenarios, such as Bluetooth headset, Bluetooth speaker, Bluetooth remote control, etc.

Delivery form: two-person cooperation

Delivery speed: fast (1 Mbps)

Shape: big hands (holding a lot of data)

Distance: only short throw (2-30m)

Power consumption: more physical exertion, but less than Wi-Fi couriers

ZigBee courier characteristics: self-organized network, two-way communication, mostly used in the field of security

Delivery form: multi-person cooperation, kick shuttlecock (self-organized network)

Delivery speed: average (250kbps)

Shape: small hands (holding less data)

Distance: good at sprinting (50-300 m)

Power consumption: low physical consumption (5 mA)

GG courier characteristics: suitable for outdoor, can be used for Internet, video, VR and so on.

Delivery form: single-handedly send data

Delivery speed: run very fast

Shape: big hands (holding a lot of data)

Distance: good at long-distance running

Power consumption: very high physical consumption (power consumption)

Because of its high power consumption and high cost, GG is a typical overkill if it is applied to outdoor IoT scenarios with low data volume. In order to solve this problem, a new wireless networking technology under the wide area network was born.

He also has a loud English name-Low-Power Wide Area Network.

Characteristics of LPWAN couriers: designed for small amounts of data transmission in cities

Delivery form: single-handedly send data

Delivery speed: average (can be delivered anyway)

Features: small hands (holding less data)

Distance: good at marathon

Power consumption: very small physical consumption

LoRa and NB-IoT are two typical LPWAN.

LoRa allows enterprises to build their own network and realize business operation, which is generally used in suburbs, parks and so on.

NB-IoT uses the unified deployment network of operators for fee-based operation, and is generally used in security, intelligent facilities and so on.

Wireless Internet technology family is huge, the king struggle is constantly staged, who can ride off the dust, The Smiling、Proud Wanderer, in the final analysis, depends on who can do the best in safety, cost, quality, and ecological chain development.

This article comes from the official account of Wechat: ZTE documents (ID:ztedoc)

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