Finding cell phones in rubble and related situations

Details Finding cell phones in rubble and related situations Finding cell phones in rubble and related situations

2006-05-16

2006-05-16

Le, Danh C. (Department: 2683)

Telecommunications

Radiotelephone system

Emergency or alarm communication

C455S404100, C455S456500, C342S463000, C342S450000

Reexamination Certificate

active

07046987

ABSTRACT:
Systems and methods are provided for locating a transmission signal from a radio transmission emitter device, such as a cell phone, in a rescue area. A pilot signal is employed to lock onto a transmission signal of one or more radio transmission devices located in a rescue area. A signal separation routine extracts desired transmission signals from emitter devices located in the rescue area from other signals coexisting on similar frequency bands and interfering with the desired transmission signals. An estimated location of transmission signals from emitter devices located in the rescue area is determined based on one or more transmission signal location techniques. The area is searched based on the estimated location of the transmission signal. If the emitter transmitting the transmission signal is not found, devices in the system are moved and the location estimation is repeated.

REFERENCES:
patent: 5959966 (1999-09-01), Torkkola
patent: 6246674 (2001-06-01), Feuerstein et al.
patent: 2002/0021621 (2002-02-01), Haase et al.
patent: 2002/0068569 (2002-06-01), Chen et al.
patent: 2002/0172308 (2002-11-01), Harel et al.
patent: 2002/0183269 (2002-12-01), Southan et al.
patent: 2002/0193941 (2002-12-01), Jaeckle et al.
patent: 2002/0196840 (2002-12-01), Anderson et al.
patent: 2003/0139141 (2003-07-01), Marjamaki et al.

Affiliated with

Also associated with

Rating

Finding cell phones in rubble and related situations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Finding cell phones in rubble and related situations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finding cell phones in rubble and related situations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3542093