Tag Archive for Wi-Fi

Multi-Gigabit Wireless by 2012

Multi-Gigabit Wireless by 2012A January 26, 2009, ScienceDaily article describes a new CMOS chip capable of transmitting 60 GHz digital RF signals. The new chip enables rapid wireless transfer of a high-definition movie from a PC to a cell phone. It was developed at the Georgia Institute of Technology‘s Georgia Electronic Design Center (GEDC).

There are many potential 60 GHz applications. Some applications are virtually wireless desktop computers, data centers, and wireless home DVD systems. The 60 GHz application would allow in-store kiosks that transfer movies to handheld devices in seconds. It also has the potential to move gigabytes of photos or video from a camera to a PC almost instantly.

Experts believe that this technology could yield high-speed, short-range wireless applications by 2012. According to Joy Laskar, director of the GEDC, “Consumers could see products capable of ultra-fast short-range data transfer within two or three years.” Ann Revell-Pechar, chair of the MIT Enterprise Forum of Atlanta Chapter says “Multi-gigabit wireless technology is widely perceived to bring important new wireless applications to both consumer and IT markets.” Darko Kirovski, senior researcher at Microsoft Research says “Multi-gigabit technology definitely has major promise for new consumer and IT applications.

Unprecedented short-range wireless speeds

Researchers have already achieved very high data transfer rates that promise unprecedented short-range wireless speeds-15 Gbps at a distance of 1 meter, 10 Gbps at 2 meters, and 5 Gbps at 5 meters.

The GEDC-developed chip is the first 60GHz embedded chip for multimedia multi-gigabit wireless use. According to Ms. Laskar, this new technology “represents the highest level of integration for 60GHz wireless single-chip solutions. It offers the lowest energy per bit transmitted wirelessly at multi-gigabit data rates reported to date.

Industry group Ecma International recently announced a worldwide standard for radio frequency (RF) technology that makes 60 GHz “multi-gigabit” data transfer possible. The specifications for this technology are expected to be published as an ISO standard in 2009.

 

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 LinkedInFacebook, and Twitter. Email the Bach Seat here.

Gigabit Wi-Fi

Gigabit Wi-FiDespite the fact that IEEE 802.11n 100Mbps wireless LAN standard has not been approved yet, the IEEE Very High Throughput (VHT) Study Group is about to launch a new project, gigabit Wi-Fi.

The study group is looking at gigabit Wi-Fi in two frequency bands, high-frequency 60GHz for relatively short ranges and under-6GHz for ranges similar to that of today’s WLANs in the 5GHz band, 802.11a and 11n. The IEEE proposal suggests a completion target date of 2013 for the standard. Big wireless players such as Atheros, Broadcom, Intel, Marvell, Motorola, and Nortel are reported to be active in the study group.

In a Network World article, IEEE readies launch of gigabit Wi-Fi project “The basic idea right now, and that’s subject to change, is that the ‘maximum mandatory mode’ on a single link would be [at least] 500Mbps,” says Tushar Moorti, director of systems architecture for chipmaker Broadcom‘s (AVGO) WLAN Business Unit. “But the further requirement is that [an access point] device that supports VHT would be able to sustain multiple links, so the aggregate would be over 1Gbps.”

“It’s the next-generation technology for wireless LAN, in the same sense that 11n was the follow-on to 11a/b/g,” says Broadcom’s Moorti.

According to the proposal, VHT “will allow a corporate or home user to roam from high-throughput dense cells to wider area networks in a seamless manner, while maintaining full support for the installed base security, management, diagnostics, and backbone infrastructure.” VHT will also be backward compatible with the full range of existing and emerging 802.11 standards, such as 11i for security, and 11s for mesh networking.

 

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 LinkedInFacebook, and Twitter. Email the Bach Seat here.

Wi-Fi Mesh Standards Coming Soon

Wi-Fi Mesh Standards Coming SoonIt was noted in the July 2006 IEEE Spectrum, that soon (sometime in late 2008) Wi-Fi Access Points (AP’s) will be able to form mesh networks. Mesh Wi-Fi networks can help make wireless networks cheaper to build and operate by allowing a group of AP’s to communicate with each other and share only one high-speed connection to the Internet. This functionality was provisionally formalized in March 2006 by IEEE in the 802.11s standard. The standard still needs to go through several more IEEE approvals before it is “official.”

IEEE logoThe article pointed out that several manufacturers already have mesh technologies in their AP’s, including Motorola, Nortel, and Tropos. In our opinion, it is reasonable to expect some vendors to push pre-standard products to market prior to official IEEE approval. It is unclear how these pre-standard products will be tested for compatibility and interoperability with other vendor’s products. Vendors may take a “best shot” at their interpretation of the standard and then make their products “standard” after the fact via patches or upgrades. Of course, this patching would be done by the owners and at the owner’s expense, driving up the total cost of ownership.

Cherry, Steven. “Wi-Fi Nodes to Talk Amongst Themselves.” IEEE Spectrum. July 2006. 55-56.

 

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 LinkedInFacebook, and Twitter. Email the Bach Seat here.

Home Wireless Equipment Revenues to Double

Wireless Takes Over Home NetworksHome wireless networking equipment revenues are set to double according to In-Stat. Ethernet LANs have given way to wireless technologies. The market research firm forecasts that equipment revenues from home networking will climb from almost $9 billion in 2004 to over $21 billion in 2009. They further notes that the home wireless market is now dominated by multi-band 54Mbps 802.11g devices, as the number of installed home networks worldwide grew by 13 million from 2003 to 37 million in 2004. The company also finds that home networking equipment is continuing to drop in price while increasing functionality such as wireless and VoIP are being integrated. Silicon prices, higher volumes, and competition have all contributed toward aggressive pricing, says In-Stat.

 

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 LinkedInFacebook, and Twitter. Email the Bach Seat here.

802.16 vs. 802.11

802.16 vs. 802.11The Institute of Electrical and Electronics Engineers (IEEE) 802.16 protocol is currently the dominant protocol suite for broadband wireless networking equipment used in public deployments. 802.16 is IP, not Ethernet, allowing longer distances than the more widely known 802.11 wireless LAN.

802.11 wireless LAN802.16 has a range of up to several kilometers. 802.16 allows for the strict reservation of bandwidth and QoS. 802.16 uses polling and not the contention access method found in 802.11. 802.16 allows for automatic adaption of radio operating parameters to meet changing traffic loads and interference levels.

The 802.16 protocol suite includes several millimeter microwave frequency secondary standards.

  • 10GHz to 66GHz – 802.16
  • 2GHz to 11GHz – 802.16a

A mobility standard is in the works – 802.16e

802.16 equipment is certified for interoperability by WiMax (Worldwide Interoperability for Microwave Access). So far only a handful of pre-standard products are available and WiMax has not certified any 802.16 products.

Related articles

 

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 LinkedInFacebook, and Twitter. Email the Bach Seat here.