System and method for improving the quality of range measurement based upon historical data
First Claim
1. A method for controlling a node in a wireless ad-hoc communications network to provide distance measurement values between nodes of said network using historical data to achieve more accurate results, said method comprising:
- controlling a first node to receive a plurality of signals from a second node of said network;
controlling said first node to calculate a distance between said first and second nodes based on said received signals, and to maintain a record of historical measurement data comprising past distance calculations by said first node which were accepted by a filter adapted to eliminate erroneous measurements; and
controlling said first node to provide at least one distance measurement value between said first and second nodes using at least one of said calculated distance and historical data.
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Accused Products
Abstract
A system and method for applying an algorithm to distance measurements between nodes in an ad-hoc communications network (100). The algorithm is located at an individual node (102, 106, 107) of the ad-hoc network (100) and processes collected data via a multi-path filter to ensure that range measurement data is correct, and if so, include such measurement data in a historical data matrix in which old measurement data is eliminated. During periods where received signals are unable to provide correct distance measurements due to reflections affecting the path between nodes or media absorption or radio energy, distance estimates may be obtained from this accurate historical data.
17 Citations
24 Claims
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1. A method for controlling a node in a wireless ad-hoc communications network to provide distance measurement values between nodes of said network using historical data to achieve more accurate results, said method comprising:
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controlling a first node to receive a plurality of signals from a second node of said network;
controlling said first node to calculate a distance between said first and second nodes based on said received signals, and to maintain a record of historical measurement data comprising past distance calculations by said first node which were accepted by a filter adapted to eliminate erroneous measurements; and
controlling said first node to provide at least one distance measurement value between said first and second nodes using at least one of said calculated distance and historical data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system adapted to provide distance measurement values between nodes of a wireless ad-hoc communications network using historical data to achieve more accurate results, said system comprising:
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a controller adapted to control a first node to receive a plurality of signals from a second node of said network;
said controller further adapted to control said first node to calculate a distance between said first and second nodes based on said received signals, and to maintain a record of historical measurement data comprising past distance calculations by said first node which were accepted by a filter adapted to eliminate erroneous measurements; and
said controller further adapted to control said first node to provide at least one distance measurement value between said first and second nodes using at least one of said calculated distance and historical data. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification