Xiaobian yesterday saw such a message that Wi-Fi Alliance has begun certification of WiGig this ultra-fast Wi-Fi standard smart machines, laptops, routers and other equipment, 2017 is expected to become the first year of WiGig technology.
WiGig? Sounds very strange, Xiaobian cheeky Wechat harassment of a group of industry experts, this reminds, WiGig technology was still in January last year, a big fire over a while, many experts are optimistic about the development of this technology, Even think WiGig can be commercialized in 2015, and be used within a considerable range.
But the fact is that except for the WiGig that was used on several laptops on display at CES last year, it was seldom mentioned. After a year and a half, it warmed up again.
Technical characteristics
Specifically, this technology, called Wireless Gigabit, is an ultra-fast, short-range wireless technology.
Based on 802.11ad standard, fast
For the existing Wifi technology, 802.11ad standard through a special method, making the transmission speed and range has been a huge improvement. This version chose to use a very high 60GHz transmission frequency, because it operates at higher radio frequencies, can encode more information, the data transmission speed of about 7 Gbit / s, even for wireless hard drives, this speed is Is enough.
Figure: a variety of WiFi standard transmission distance comparison
The fastest Wi-Fi protocol can achieve the rate of 433Mb / s, working at 5MHz frequency. Most Wi-Fi networks are still using slower protocols.
Use new frequency band, interference is small
WiGig technology is more reliable than Wi-Fi. Because of its work in the new frequency band, abandoning the 2.4GHz and 5GHz frequency bands (all of which are rather congested) used by all devices not only reduce the congestion of the wireless channel, but also have the directional characteristics that make it encounter the interference smaller. While Wi-Fi devices send signals in all directions, WiGig technology sends signal beams to connected devices over a very small antenna array.
Poor penetration, short transmission distance
The 60 GHz signal also has some significant drawbacks over Wi-Fi. They can be obstructed by walls, ceilings and floors, limiting the application of the technology to the same room. It needs to be within line of sight and within 10 meters of a short distance, in line with such conditions in order to achieve maximum speed and lower latency.
Wi-Fi Alliance certification will accelerate its development
Although there are obvious limitations, WiGig still has broad prospects in the Internet of Things era, such as VR virtual reality equipment. Delay is a serious problem for VR. Large VR helmets require a data cable, and WiGig technology can help solve this problem.
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