yet2.com - technology discovered here
Search Technologies Technology Needs
Browse Technologies
Browse Technology Needs

yet2.com corporate web site
 Tech of the Week
Each week we feature special technologies. Take a moment to view the other Tech of the Week articles, you may find one that meets a present need.
Energy-efficient carbon dioxide removal and sequestration
Foamed non-polymeric ionic compounds
Hybrid refrigeration machines utilizing ionic liquids
Novel technology for the exploration and evaluation of groundwater (fresh/thermal) deposits at depths up to 7000 meters with credibility of 95%
Renewable resource-based ionic liquids
 Info
Tech of the Week is special. Click View Listing Details to see the full information on this technology -- even if you're not already a member.
To take full advantage of yet2.com, Become a Member.
 Archive List
Biomedical Information Navigator
Application Lambda Switching
Process for the synthesis of dihalonitrobenzenes
High-yield process for the synthesis of ethers of aromatic acids
Improved manufacture of oxalic acid
More articles...
 
 Tech of the Week

Mobile User/Asset Location Finding within a Standard WiFi Environment for RTLS Applications

Microsoft Corporation

Tracking packages where GPS and RFID cannot.

This suite of software, network drivers, and algorithms allows determining a transponder’s location within a multi-access point 802.11-based wireless environment, without using special hardware. The 802.11 protocol is also called “WiFi.” The suite is designed for a “hardware-agnostic” implementation; that is, it is not tethered to any specific brand of system hardware. Given a WiFi field of three or more access points, the technology can locate a WiFi-enabled tag, phone, PDA, or computer with an accuracy of about 1.5 meters indoors. The technology complements GPS and RFID technologies, and can operate in environments where neither GPS nor RFID may be appropriate—within a warehouse or office that is not open to the sky, and at distances between reader and transponder (WiFi tag or NIC, for example) that RFID cannot reach. Potential applications range from unique forms of asset location such as farm, construction, or cargo container tracking, to security camera triggering, automated phone forwarding, “smart” security badges, customized advertising displays, and social networking in concert with software on the user’s device. According to the Yankee Group, the real time location service (RTLS) market is expected to climb from a mere $25M USD in 2005, to about $10B USD by 2010.

By making use of the current generation of 802.11 WiFi access points, computers, WiFi-enabled phones, and WiFi tags, the RADAR technology leverages an existing infrastructure investment rather than require new infrastructure investment. RADAR complements GPS and RFID location systems, and works in locations and distances where they cannot. Software that takes advantage of the real time location service (RTLS) provided by RADAR can track movable assets from palettes to cargo containers to equipment at a construction site—anywhere a multi-access point WiFi field can be established. Several cities are currently establishing pervasive public systems. Applications that use the RADAR technology do not have to be recognized as part of a network to triangulate using a network’s access points. The technology is accurate within a few feet when using its calibration techniques. Depending on how often a tag is queried or announces itself to the system, battery life can extend up to three years. RADAR opens mobile computing to a wide range of new location-aware software applications and services that do not currently exist.

Previous in-building location systems generally relied on specialized hardware and technologies that suffer from significant limitations or that require extensive deployment of infrastructure solely for locating tags, transponders, and users. For example, infra-red (IR) wireless technology offers only limited, line-of-sight range. Radio-frequency (RFID) tag systems, like IR, are often built for the sole purpose of establishing location, suffer from short range (approximately 2 feet), and do not provide any data networking services. Specialized hardware can be cost-prohibitive. One wireless LAN-based system estimates a user’s position based on the access point to which he is currently communicating.

RADAR differs from other such work in that it tackles the problem of location and tracking using widely available RF-based wireless LANs. With data networking speeds of 11Mbps or higher, wireless LANs have gained rapid acceptance and are already widely deployed in offices, schools, homes, factories, warehouses, college campuses, and even across whole metropolitan areas. Besides the LANs, the RADAR system does not require any additional hardware and can be enabled using purely software means.

Download this Tech of the Week as a PDF

You can download this Tech of the Week as a PDF file that you can share with co-workers. When viewed on a computer with an Internet connection, the PDF includes live links back to yet2.com and the technology listing.


Want to see more? Tech of the Week is special. Click View Listing Details to see the full information on this technology -- even if you're not already a member.
Want to know more? yet2.com will confidentially pass your question along to the provider of this technology and get back to you with an answer if it is available. This service is free. Ask the owner a question
Like an introduction? Deal directly with the licensing contact for this technology. You´ll need to provide some minimal information. This service is confidential and free of charge unless noted. Request an introduction
Send an email to a friend or colleague that contains a link to this technology. Email this listing to a friend
Boston, MA, USA       Liverpool, United Kingdom       Tokyo, Japan                  
Find a Technology |  List a Technology |  Insight |  Using this Site |  About Us |  Home |  Customer Support |  Help
Privacy Statement   |   Terms of Use Agreement   |   Technology Abstracts
Copyright © 1999-2014 by yet2.com, Inc. All Rights Reserved.
120.05.28.04