Recently, some media reported that the Wi-Fi Alliance has begun to support WiGig's ultra-fast Wi-Fi standard certification, also known as the 802.11ad standard. WiGig has almost doubled the current maximum Wi-Fi rate, up to 8Gbps. The local network data transfer rate, the Wi-Fi Alliance said, will be an option for smartphones and laptops in 2017. Of course, WiGig has the drawback that the farthest distance is only 33 feet (10 meters), so you must be close enough to the router in the room.
Kevin Robinson, vice president of marketing for the Wi-Fi Alliance, said: "We are talking about an indoor technology." Despite obvious limitations, WiGig still has broad prospects, especially the emerging immersive experience devices represented by VR.
In addition to virtual reality (VR), the Wi-Fi Alliance says WiGig can also be used for augmented reality (AR), 4K video, and projecting mobile/notebook screen content onto desktop displays. The first certified consumer products are Dell's LaTItude 7450 and 7470 notebooks, which will be applied to a variety of new routers, tablets, and smart mobile devices.
So what exactly is WiGig?
WiGig is the abbreviation of English Wireless Gigabit. The meaning of Chinese is: "Wireless Gigabit" is a faster short-range wireless technology. It is a wireless Gigabit Alliance organization that launches WiGig Gigabit wireless communication technology. Can be used to quickly transfer large files at home. WiGig technology is 10 times faster than Wi-Fi (Wireless Compatibility) technology, and HD video can be transferred from computers and set-top boxes to TVs without ugly network cables.
Founded on May 7, 2009, the Wireless Gigabit Alliance is currently comprised of 15 technology industry companies (including board and contributing members), including Intel, Microsoft, AMD, Nvidia, Cisco, Nokia, Dell, Samsung, and LG. Global, well-known companies such as Panasonic, Toshiba, NEC, and MediaTek (but Apple is not currently a member of this alliance).
The WiGig operating band launched by the Wireless Gigabit Alliance is 60MHz. This 2.4GHz and another 5GHz band with relatively high bandwidth has a higher bandwidth. It can establish a wireless transmission network with a speed of about 7Gb/s. The currently used WiFi wireless network is 10 times faster. In addition, WiGig can be backward compatible with the IEEE 802.11 standard, which is compatible with the WiFi device's network connection if supported by the WiGig device. At present, there are already wireless chips released by chip manufacturers that can support WiFi 2.4 frequency band (802.11n), 5GHz frequency band and WiGig 60GHz frequency band chipset to meet the balance of transmission speed and distance in different environments.
The difference between WiGig and Wifi
From the name, WiGig is similar to WiFi, but in fact they are similar in function. But WiGig is a faster wireless technology that uses the 60GHz band that is not yet widely used, has better stability, and has a transmission rate of 7 Gbps, which is ten times faster than WiFi, and can transmit almost one in 15 seconds. The content of the DVD is especially suitable for high-definition video data transmission, and is considered to be the future gold mine to be developed for wireless HDTV and HD home theater. The main difference between WiGig and WiFi is that WiGig speed is much faster than Wifi, but WiGig also has certain shortcomings. WiGig has a shorter transmission distance than Wi-Fi. WiGig can work in one room and may extend to adjacent rooms. However, there may be no signal when the distance is farther away, resulting in the inability to transmit data.
From a technical point of view, the WiGig standard is actually an extension of WiFi technology. It can be seen as an extension of the 802.11 standard. It is not only backward compatible with the 802.11n standard, but also compatible with the WA2 signal encryption technology. In simple terms, when users are able to use WiGig ultra-high speed transmission within a relatively short distance, if they are out of the WiGig signal range, the network card will automatically switch to a 2.4GHz or 5GHz frequency WiFi network. The WiGig operating frequency band is 60 GHz, and the data transmission rate can reach 7 Gbs, and the transmission speed is 10 times that of the existing 802.11n technology. Although the bandwidth is large enough, the biggest drawback of the 60 GHz band signal is that it is susceptible to interference, resulting in a very short use distance. To solve this problem, WiGig uses beamforming technology, which allows the client to intelligently select the optimal data path to improve signal reception and provide better data throughput performance. Thereby achieving a use distance of 10m~20m, which is very suitable for home users.
Multi-device wireless synchronous display using WiGig technology
Although WiGig's transmission distance and wall penetration performance are not as good as WiFi due to the use of the 60MHz frequency band that is easily interfered, WiGig's improved beamforming technology can also achieve a transmission distance of more than 10 meters, which is a short distance for the family. The use environment is still very suitable. Imagine using WiGig-enabled devices to achieve high-speed data transfer between digital TVs, computers, tablets, and even mobile phones. The picture sync shows how great it is. Even our display screen requires only one power cord to allow the monitor to display the picture, even the video line. Similar can be added to small office environments, such as replacing the mouse and keyboard, printers, and wireless communication between the host and other devices. As shown in the figure below, you can use WiGig to implement it later.
Full wireless connectivity step-by-step with WiGig technology
The high transmission speed of WiGig technology is undoubtedly a highlight. The support of many electronics industry heavyweight alliance members and its not-for-profit organizational features will undoubtedly make WiGig a widely used next-generation wireless communication technology. These are not fantasy. At present, Dell has taken the lead in launching the WiTI-enabled notebook LaTItude 6430u (as shown in the following figure, using the multi-band expansion module solution). This year Intel also did related function demonstrations in its developer forum (San Francisco), and Panasonic The WiGig SD card with this technology is expected to enter the market next year (can achieve DVD video transmission in one minute), which indicates that WiGig is not far from us.
At present, WiGig is not difficult to implement from the technical implementation. The constraints such as cost and power consumption are no longer a problem. Although the transmission distance is a short board, about 10 meters is still applicable to local environment applications such as home. It is expected that the product with WiGig high-speed wireless transmission technology will enter the market as early as 2013, and I am really looking forward to experiencing the ultra-convenient mobile experience of wireless connection.
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