US Patent Application No: 2004/0203,380

Number of patents in Portfolio can not be more than 2000

Method and wireless terminal for generating and maintaining a relative positioning system

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Abstract

A method for determining the relative position of wireless terminals (1) in an ad hoc network, wherein at least some of said wireless terminals can communicate over wireless links (2) in one or several hops with at least some of the other wireless terminals. The following steps are performed in the wireless terminals: (1) measuring in a plurality of said wireless terminals the distances (d.sub.ij) to one-hop neighbors, and (2) using the distances measured in at least two wireless terminals to compute the location (x, y) of at least one other wireless terminals. One advantage of the invention is GPS-less positioning in ad hoc networks.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNELAUSANNE175

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Capkun, Srdan Lausanne, CH 1 40
Hamdi, Maher Reuues, FR 4 98
Hubaux, Jean-Pierre EPFL-DI-ICA, IN Ecublens, Lausanne CH-1015, CH 5 64
Vetterli, Martin CH-1091 Grandvaux, CH 41 302

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
PALM, INC. (6)
7,693,484 Dynamic networking modes method and apparatus 4 2002
7,096,037 Videoconferencing bandwidth management for a handheld computer system and method 18 2002
7,099,149 Encasement for handheld computer 3 2004
7,729,493 Cover for mobile computer 4 2006
8,180,294 Dynamic networking modes method and apparatus 1 2009
8,428,517 Dynamic networking modes method and apparatus 0 2012
 
FUJITSU LIMITED (4)
7,158,078 Positioning of mobile wireless terminal 3 2003
7,319,428 Positioning of mobile wireless terminal 0 2006
7,304,610 Positioning of mobile wireless terminal 1 2006
7,265,716 Positioning of mobile wireless terminal 0 2006
 
MESHNETWORKS, INC. (3)
7,042,867 System and method for determining physical location of a node in a wireless network during an authentication check of the node 13 2002
7,126,951 System and method for identifying the floor number where a firefighter in need of help is located using received signal strength indicator and signal propagation time 85 2004
8,325,653 System and method for restricting network access to one or more nodes in a wireless communications network 0 2006
 
SPRINT SPECTRUM L.P. (3)
7,659,850 Method and system for determining locations of mobile stations using directional corrections 3 2006
7,868,826 Method and system for determining locations of mobile stations using directional corrections 0 2009
7,800,540 Method and system for determining locations of mobile stations using directional corrections 0 2009
 
THE INVENTION SCIENCE FUND I, LLC (3)
8,111,622 Signal routing dependent on a node speed change prediction 0 2005
7,646,712 Using a signal route dependent on a node speed change prediction 0 2005
8,125,896 Individualizing a connectivity-indicative mapping 0 2005
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
7,406,322 Determining approximate locations of network devices that are inaccessible to GPS signals 1 2005
7,643,836 Determining approximate locations of network devices that are inaccessible to GPS signals 2 2008
 
PLUS LOCATION SYSTEMS PTY LIMITED (2)
7,239,277 Method and system for extensible position location 38 2005
7,602,339 Method and system for extensible position location 3 2007
 
ROCKWELL COLLINS, INC. (2)
7,027,822 Distributed GPS for geolocation of a network of nodes 4 2002
7,400,598 Polymorphic broadcast and multicast services for wireless networks 2 2005
 
ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONAL (1)
8,060,107 Radio network system capable of autonomous estimation using position correction 0 2007
 
ANDREW LLC (1)
8,380,222 System and method for multiple range estimation location 0 2012
 
APPLE INC. (1)
8,325,590 OFDM communications system 0 2002
 
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY (1)
7,123,925 Method and apparatus for locating devices 8 2003
 
CANON KABUSHIKI KAISHA (1)
7,543,082 Operation parameter determination apparatus and method 1 2004
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (1)
7,519,045 Optimal direction-based flooding method for mobile ad-hoc networks 2 2005
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (1)
7,420,954 Efficient lightweight information dissemination algorithm for mobile wireless ad hoc networks 4 2004
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
7,418,510 Network system dynamically made for a short-distance wireless communication and network structuring method 6 2002
 
NOKIA CORPORATION (1)
7,272,404 Position acquisition 17 2006
 
PALO ALTO RESEARCH CENTER INCORPORATED (1)
7,457,860 Node localization in communication networks 9 2003
 
POWER MEASUREMENT LTD. (1)
7,761,910 System and method for assigning an identity to an intelligent electronic device 18 2004
 
PRIMA RESEARCH LLC (1)
8,315,598 Systems and methods for gathering information about discrete wireless terminals 0 2009
 
ROCKSTAR BIDCO, LP (1)
7,466,681 Method and apparatus for sensor network routing 0 2004
 
SAMSUNG ELECTRONICS CO., LTD. (1)
7,573,858 Ad-hoc network for transmitting packets to plural target regions and packet transmission method thereof 0 2005
 
SONY CORPORATION (1)
8,320,912 Wireless communication system, terminal, message sending method, and program for allowing terminal to execute the method 2008