Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-02-08
2011-02-08
Harper, Vincent P (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C702S189000
Reexamination Certificate
active
07885666
ABSTRACT:
Disclosed is a method and apparatus for determining the new sample points of the location determination system in a wireless environment. In the training phase, after knowing the distribution of the observed radio signal of a location for a target device, the uncertainty of the probability distribution of the received radio signal is analyzed by a location probability distribution model. The radio signal distribution differences are calculated, and the penalties between the location in question and its nearby locations are also calculated, thereby determining whether a location is the candidate of new sample points or the recalibration points. This invention has nothing to do with decision rules and will not undergo the problems of choosing inappropriate decision rules. It also provides a penalty model for generating penalty of error prediction from one location to another location, which can as well easily mitigate the problem on the sample points with the double-role attribute of the border line.
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On the Optimality of WLAN Location Determination Systems Moustafa A. Youssef, Ashok Agrawala Department of Comupter Science and UMIACS University of Maryland College Park, Maryland 20742 UMIACS-TR-2003-29 and CS-TR-4459 Mar. 11, 2003.
Cover, T. M. and Thomas, J. A. Elements of Information Theory. New York: Wiley, 1991,Chaper 2.
Chen Chao-Nan
Hsyu Ming-Chun
Tsuei Wen
Harper Vincent P
Industrial Technology Research Institute
Pham Timothy
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