The Wireless Gigabit Alliance has completed specs for a technology designed to deliver as much as 7 Gbps of wireless bandwidth in the 60 GHz band. The new technology, WiGig has the support of technology giants such as Intel, Broadcom, and Atheros. The technology is expected to have enough capacity to deliver high-def video streams up to 10 meters. WiGig’s anticipated road map includes system certifications in 2010 and WiGig based products to market in 2011.
Supplement other wireless technologies
According to the WGA, WiGig is not designed to replace 802.11 or Bluetooth but rather to supplement it. WiGig is a device-to-device (p2p) network and does not need a central hub or router that could easily turn into a congestion point. WiGig uses beamforming to extend its range beyond the 10-meter range and will automatically switch to 802.11n Wi-Fi. “Our technology is backward compatible with existing Wi-Fi, and we fall back to 802.11n and 802.11g when we can’t connect at [7 Gbps] speeds,” Ali Sadri, told TechNewsWorld. “We’re based on 802.11, so our spec is not replacing Wi-Fi but extending it to 10 to 20 times faster than Wi-Fi.”
“By complementing Wi-Fi and enabling multi-gigabit speeds, the versatile specification is a very significant achievement on the road to the next generation of wireless LAN products,” says Craig Mathias, a Principal with the wireless and mobile advisory firm Farpoint Group.
Integrate WiGig into Wi-Fi chipsets
It is reported that Intel, Broadcom, and Atheros all have plans to integrate WiGig into Wi-Fi chipsets. “Ultimately, the question is how many different kinds of radios do you really need?” says Farpoint’s Mathias, “There’s not just competition from Wi-Fi and wireless HD but also cellular technologies such as 3G, LTE or WiMax … A lot of people anticipate 60 GHz products that will include 2.4 and 5 GHz Wi-Fi as well,” said Bill McFarland, chief technology officer of Atheros, and a WiGig member. “I definitely think we can support tri-band at 65 nm,” he added.
WiGig will include protocol adaptation layers to support specific system interfaces including data buses for PC peripherals and display interfaces for HDTVs, monitors, and projectors. WiGig will include advanced security and power management for WiGig devices. “We’re rapidly paving the way for the introduction of the next generation of high-performance wireless products – PCs, mobile handsets, TVs and displays, Blu-ray disc players, digital cameras, and many more,” said Doctor Ali Sadri of Intel and president and chairman of the Wireless Gigabit Alliance
The need for fast wireless data transfer plays into two big trends: the proliferation of multimedia and the increasing cable clutter that users have to deal with. “NVIDIA recognizes the general market trend toward wire-free interfaces. Today, display interfaces are at an inflection point where the next generation solutions will feature wireless display connections for PCs, game consoles, notebooks, and mobile devices with PC monitors and TVs,” said Devang Sachdev, Technology Marketing Manager at NVIDIA and WiGig Board Member.
60 GHz loses strength quickly
The biggest knock against WiGig is that signals at 60 GHz get absorbed by oxygen, meaning they lose strength quickly. Steel or concrete walls and even people in the room can be degraded or stop the 60 GHz signal. However, Intel’s Sadri says there is a solution. A 60 GHz antenna is just 2.5 millimeters long, small enough that a lot of them can be packed into even a thin TV set or a mobile handset. Put 32 antennas on the transmitting and receiving ends, and you can send enough steered beams to compensate for the losses the signal experiences over distance.
In the 60 GHz spectrum, WiGig is likely to run into some competition. The IEEE is introducing a follow-up to 802.11n Wi-Fi standards called 802.11ad. The IEEE 802.11ad standard will also be based on the 60 GHz spectrum but is not expected before 2012. Mathias says, “The WiGig Alliance hopes to get a head start now and they might submit their standard to the 802.11ad group to be included in the specification.” The Wireless HD consortium also supports a third 60-gigahertz wireless networking plan for uncompressed HD video. Sony and Samsung are backers of all three 60 GHz plans.
It is likely that IEEE 802,11ad and Wireless HD will find it hard to compete against a general-purpose WiGig standard that can do uncompressed wireless HD video and more.
Members of the WGA include:·
- Agilent Technologies Inc. (A)
- AMD (AMD)
- Atheros Communications, Inc.
- Broadcom Corporation (BRCM)
- Dell (DELL)
- Intel (INTC)
- LG Electronics
- Marvell International LTD.
- Microsoft (MSFT)
- NEC Corporation (6701)
- Nokia (NOK)
- NVidia (NVDA)
- Panasonic (PCRFY)
- Samsung Electronics Co. (005930)
- Texas Instruments (TXN)
- Toshiba (TOSBF)
Related articles
- WiGig and Beamforming – 7Gbps Wireless (q-ontech.blogspot.com)
- Beamforming your data: how WiGig will offer 7Gbps speeds (arstechnica.com)
Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedIn, Facebook, and Twitter. Email the Bach Seat here.
