METHOD, APPARATUS OR SOFTWARE FOR LOCATING A MOBILE NODE RELATIVE TO ONE OR MORE OTHER NODES
First Claim
Patent Images
1. A method for locating a mobile node relative to one or more other nodes, said method comprising the steps of:
- receiving data indicating the detection at a first node of signals transmitted from one or more second nodes, each said second node having a known location;
determining the signal coverage area of each detected second node;
identifying one or more third nodes from which no signal is received at the first node, each having a known location and each having a signal coverage area coincident with said signal coverage area of one or more of said detected second nodes;
determining a plausible area for the location of said first node from the combination of the signal coverage areas for each detected second node and the exclusion of the signal coverage areas of each identified third node; and
calculating the center of said plausible area and locating said first node at said center.
1 Assignment
0 Petitions
Accused Products
Abstract
A method, apparatus and software is disclosed in which the location of a mobile device is calculated from the signal coverage areas of other detected nodes.
-
Citations
20 Claims
-
1. A method for locating a mobile node relative to one or more other nodes, said method comprising the steps of:
-
receiving data indicating the detection at a first node of signals transmitted from one or more second nodes, each said second node having a known location; determining the signal coverage area of each detected second node; identifying one or more third nodes from which no signal is received at the first node, each having a known location and each having a signal coverage area coincident with said signal coverage area of one or more of said detected second nodes; determining a plausible area for the location of said first node from the combination of the signal coverage areas for each detected second node and the exclusion of the signal coverage areas of each identified third node; and calculating the center of said plausible area and locating said first node at said center. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An apparatus for locating a mobile node relative to one or more other nodes, said apparatus comprising:
-
means for receive data indicating the detection at a first node of signals transmitted from one or more second nodes, each said second node having a known location; means for determine the signal coverage area of each detected second node; means for identify one or more third nodes each having a known location and each having a signal coverage area coincident with said signal coverage area of one or more of said detected second nodes; means for determine a plausible area for the location of said first node from the combination of the signal coverage areas for each detected second node and the exclusion of the signal coverage areas of each identified third node; and means for calculate the center of said plausible area and transforming a location memory to locating said first node at said center. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A program product comprising a computer readable medium having encoded thereon a program of instructions executable by a computer to:
-
receive data indicating the detection at a first node of signals transmitted from one or more second nodes, each said second node having a known location; determine the signal coverage area of each detected second node; identify one or more third nodes from which no signal is received at the first node, each having a known location and each having a signal coverage area coincident with said signal coverage area of one or more of said detected second nodes; determine a plausible area for the location of said first node from the combination of the signal coverage areas for each detected second node and the exclusion of the signal coverage areas of each identified third node; and calculate the center of said plausible area and locating said first node at said center.
-
Specification