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WiGig

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WiGig

"IEEE 802.11ad" redirects here. It is not to be confused with IEEE 802.1ad.

The Wireless Gigabit Alliance[1] (WiGig) was a trade association that developed and promoted the adoption of multi-gigabit speed wireless communications technology operating over the unlicensed 60 GHz frequency band. It was subsumed by the Wi-Fi Alliance in March of 2013.[2]

The creation of WiGig (IEEE 802.11 ad) was announced on May 7, 2009.[3][4][5][6][7] The completed version 1.0 WiGig specification was announced in December 2009.[8][9][10][11][12] In May 2010, WiGig announced the publication of its specification, the opening of its Adopter Program, and the liaison agreement with the Wi-Fi Alliance to cooperate on the expansion of Wi-Fi technologies.[13][14] In June 2011, WiGig announced the release of its certification-ready version 1.1 specification.[13]

The WiGig specification will allow devices to communicate without wires at multi-gigabit speeds. It enables high performance wireless data, display and audio applications that supplement the capabilities of today’s wireless LAN devices. WiGig tri-band enabled devices, which operate in the 2.4, 5 and 60 GHz bands, will deliver data transfer rates up to 7 Gbit/s, about as fast as an 8 antenna 802.11ac transmission, and nearly 50 times faster than the highest 802.11n rate, while maintaining compatibility with existing Wi-Fi devices. However, the promised 7 Gbit/s rate makes use of the 60 GHz band which cannot go through walls; it is a line-of-sight technology. When roaming away from the main room the protocol will switch to make use of the other lower bands at a much lower rate, but which propagate through walls. [15]

Members

Among the companies that comprise the board of directors are:

The following companies are Contributor members:

Specification

The WiGig MAC and PHY Specification, Version 1.1 is specification-ready and includes the following capabilities:[13][17]

  • Supports data transmission rates up to 7 Gbit/s – more than ten times faster than the highest 802.11n rate
  • Supplements and extends the 802.11 Media Access Control (MAC) layer and is backward compatible with the IEEE 802.11 standard
  • Physical layer enables low power and high performance WiGig devices, guaranteeing interoperability and communication at gigabit rates
  • Protocol adaptation layers are being developed to support specific system interfaces including data buses for PC peripherals and display interfaces for HDTVs, monitors and projectors
  • Support for beamforming, enabling robust communication at distances beyond 10 meters. The beams can move within the coverage area through modification of the transmission phase of individual antenna elements, which is called phase array antenna beamforming.
  • Widely used advanced security and power management for WiGig devices

Application Specifications

On November 3, 2010, WiGig Alliance announced the feature complete WiGig version 1.0 A/V and I/O protocol adaptation layer (PAL) specifications.[13] The application specifications have been developed to support specific system interfaces including extensions for PC peripherals and display interfaces for HDTVs, monitors and projectors.

WiGig Display Extension

WiGig Bus Extension and WiGig Serial Extension. The WiGig Bus Extension (WBE) is now available to members.[18]

  • Define high-performance wireless implementations of widely used computer interfaces over 60 GHz
  • Enable multi-gigabit wireless connectivity between any two devices, such as connection to storage and other high-speed peripherals

Liaisons

On May 10, 2010, the Wi-Fi Alliance and WiGig Alliance announced a cooperation agreement for multi-gigabit wireless networking. The Wi-Fi Alliance and the WiGig Alliance will share technology specifications for the development of a next-generation Wi-Fi Alliance certification program supporting Wi-Fi operation in the 60 GHz frequency band.[19][20][21]

On November 3, 2010, the WiGig Alliance and the Video Electronics Standards Association (VESA) announced a liaison to define the next generation standard wireless display technology. VESA and WiGig Alliance have agreed to share technology specifications to develop multi-gigabit wireless DisplayPort capabilities and create a certification program for wireless DisplayPort products.[22]

On June 28, 2011, the WiGig Alliance announced becoming an Adopter of HDMI Licensing, LLC to further provide WiGig Display Extension (WDE) support for HDMI mapping. WDE is the only 60 GHz specification that defines a framework to connect to DisplayPort monitors and HDMI TVs, enabling applications such as the wireless transmission of compressed or uncompressed video.[13][23]

Competition

WiGig competes with WirelessHD in some applications. WirelessHD transmits in the same 60 GHz band used by WiGig.

See also

References

External links

  • IEEE 802.11ad Tutorial
  • IEEE Std 802.11ad access entry page


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