Methods and Arrangements for High Accuracy Positioning
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Accused Products
Abstract
This disclosure relates to methods and arrangements for positioning of a communication device (102, 202, 208, 402, 502) in a communication system. Based on received radio channel information from a positioning server (112, 212, 408, 508), positioning nodes (104a-d, 204, 206, 410, 412, 510) identify (S-430, S-538, 704) a radio signal from said communication device, measure (S-432, S-433, S-540, 706) the strength of said received signal and sends (S-434, S-435, S-542, 708) signal strength information and position information of the positioning nodes to said positioning server. The positioning server then determines (S-436, S-544, 610) the position of the communication devices based on the received signal strength measurements and the position information of the positioning nodes. High accuracy in-door positioning of communication devices is achieved.
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Citations
26 Claims
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1-14. -14. (canceled)
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15. A method in a positioning server for positioning of a communication device, the positioning server being configured to communicate with a plurality of positioning nodes, the method comprising:
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receiving radio channel information of said communication device, sending said received radio channel information of the communication device to said plurality of positioning nodes, receiving from one or more of said plurality of positioning nodes signal strength information of a signal transmitted by the communication device, where the signal strength information refers to the strength of said signal as received by said one or more of said plurality of positioning nodes, respectively, by using said radio channel information, obtaining information about one or more positions at Which the signal was received of said one or more of said plurality of positioning nodes, and determining the position of the communication device based on the received signal strength information and the obtained positioning information of said one or more of said plurality of positioning nodes. - View Dependent Claims (16, 17, 18, 19)
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20. A method in a positioning node for providing positioning information of a communication device to a positioning server in a positioning system, the method comprising:
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obtaining radio channel information for the communication device from the positioning server, identifying a radio channel signal from the communication device, and measuring a signal strength of said identified said radio channel signal, and sending information of said measured signal strength to the positioning server, enabling the positioning server to determine a position of the communication device. - View Dependent Claims (21, 22, 23)
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24. A positioning server for positioning of a communication device, the positioning server comprising:
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a communication unit configured to receive radio channel information of said communication device, to send said received radio channel information of the communication device to said plurality of positioning nodes, to receive from one or more of said plurality of positioning nodes signal strength information of a signal transmitted by the communication device, where the signal strength information refers to the strength of said signal as received by each one of said one or more of said plurality of positioning nodes by using said radio channel information, and to obtain positioning information of said one or more of said plurality of positioning nodes, and a processor unit configured to determine the position of the communication device based on the received signal strength information and the obtained positioning information of said one or more of said plurality of positioning nodes.
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25. A positioning node for providing positioning information of a communication device to a positioning server in a positioning system, the positioning node comprising:
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a communication unit configured to receive radio channel information for the communication device from the positioning server, a radio frequency unit configured to receive radio signals, and a processor that is configured to identify a radio signal from the communication device out of the received radio signals, and to measure a signal strength of said identified radio signal, wherein the communication unit further is configured to send information of said measured signal strength to the positioning server, enabling the positioning server to determine a position of the communication device. - View Dependent Claims (26)
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Specification