Making time-of-flight measurements in master/slave and ad...

Details Making time-of-flight measurements in master/slave and ad... Making time-of-flight measurements in master/slave and ad...

2005-03-02

2009-08-11

Corsaro, Nick (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S507000, C455S041200, C455S011100

Reexamination Certificate

active

07574216

ABSTRACT:
Method for obtaining range and/or positional information of electronic devices typically rely on a device (A) re-questing that another device (B) supplies a reply message (22), which contains some timing information (T2, T3) on the signals received and sent. Problems that arise in such networks comprise: firstly, some devices (C) may be out of range of the device (A) that initiates the ranging measurements, and secondly, some devices (B, C) may not be allowed to communicate with each other and thus, the distance between these devices cannot be found. This invention discloses that in these cases, eavesdropping on messages (21, 22, 24) passing between other devices (A, B, C) in the system can result in that distances between additional devices are found. Furthermore, by using eavesdropping the number of transmissions, and therefore the potential for collisions, is reduced. Thus, the power consumption of the nodes in the network can be lowered.

REFERENCES:
patent: 5510800 (1996-04-01), McEwan
patent: 5589839 (1996-12-01), Lindenmeier et al.
patent: 6006097 (1999-12-01), Hornfeldt et al.
patent: 6307848 (2001-10-01), Wood, Jr.
patent: 7187924 (2007-03-01), Ohlenbusch et al.
patent: 2002/0113735 (2002-08-01), Spratt
patent: 2003/0174048 (2003-09-01), McCorkle
patent: 2004/0266457 (2004-12-01), Dupray
patent: 2005/0113090 (2005-05-01), Sharony
patent: 2005/0135286 (2005-06-01), Nurminen et al.
patent: 2006/0111042 (2006-05-01), Pitchers

Affiliated with

Also associated with

Rating

Making time-of-flight measurements in master/slave and ad... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Making time-of-flight measurements in master/slave and ad..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Making time-of-flight measurements in master/slave and ad... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4090753