July 2010
Intermediate to advanced
350 pages
14h 19m
English
Content preview from Smart Phone and Next Generation Mobile Computing
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Mobile Application Challenges 425
receivers and a number of UWB tags, each attached to an object or a
person. The cost of such systems remains a major problem.
7.1.5.6 Bluetooth
Bluetooth is yet another low-cost wireless technology for indoor loca-
tion sensing. Operating in the 2.4-GHz ISM band, Bluetooth is now
a de facto standard wireless interface on almost all cell phones, smart
phones, and PDAs. Like wireless LAN location sensing, received sig-
nal strength (RSS) measurement can be used to localize a Bluetooth
device. In contrast to wireless LAN, Bluetooth interface can be built
in the form of small tags that can be easily attached to an asset or a
person. In addition, each Bluetooth device has a unique ID, which
makes identification easier than ...