Method for locating mobile units based on received signal...

Details Method for locating mobile units based on received signal... Method for locating mobile units based on received signal...

2007-12-11

2007-12-11

Perez-Gutierrez, Rafael (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C342S451000, C342S458000, C342S464000, C342S357490

Reexamination Certificate

active

10454147

ABSTRACT:
Location of mobile units in a wireless local area network is based on use of signal strength ratios and other criteria. In one embodiment absolute value of signal strength is used to derive a second value of location. The second value may be used as the location if the system is not calibrated and may also be used to calibrate the system. Alternatively time difference of arrival may be used in combination with signal strength ratio.

REFERENCES:
patent: 6304218 (2001-10-01), Sugiura et al.
patent: 6889053 (2005-05-01), Chang et al.
patent: 2002/0122003 (2002-09-01), Patwari et al.
“Enhancements to the RADAR User Location and Tracking System” by Bahl et al.;Microsoft ResearchandUniversity of California at San Dieago; pp. 1-13.
“User Location and Tracking in an In-Building Radio Network” by Paramvir Bahl;Microsoft Research, Technical Report, Feb. 1999, pp. 1-12.

Affiliated with

Also associated with

Rating

Method for locating mobile units based on received signal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for locating mobile units based on received signal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for locating mobile units based on received signal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3884485