APPROACH TO SECURE LOCALIZATION IN WIRELESS NETWORKS
First Claim
Patent Images
1. A secure localization system, comprising:
- at least one secure message transmitter (SMT) for transmitting secure messages (SMs) using multiple transmission power levels, the SMs comprising a set of identifiers comprising identifiers for the SMT transmitting the message and power level used for transmission, and an identifier for each SM itself;
a plurality of reference points (RPs) deployed at known locations; and
a localization controller configured to instruct each SMT to transmit SMs at specific power levels for receipt at the RPs,wherein each RP is configured to receive SMs and report the received SMs to the localization controller, each report containing an identifier for the RP in addition to the SM received by it, the localization controller being further configured to determine location by comparing reports received.
2 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the present invention disclose a secure localization infrastructure using transmitters that can transmit messages at multiple distinct power levels throughout a community of reference points. Transmitters send messages at different power levels in a manner that every location in the system corresponds to a unique set of messages. Received messages are reported back to the localization infrastructure, which then determines location by comparing the messages reported.
12 Citations
24 Claims
-
1. A secure localization system, comprising:
-
at least one secure message transmitter (SMT) for transmitting secure messages (SMs) using multiple transmission power levels, the SMs comprising a set of identifiers comprising identifiers for the SMT transmitting the message and power level used for transmission, and an identifier for each SM itself; a plurality of reference points (RPs) deployed at known locations; and a localization controller configured to instruct each SMT to transmit SMs at specific power levels for receipt at the RPs, wherein each RP is configured to receive SMs and report the received SMs to the localization controller, each report containing an identifier for the RP in addition to the SM received by it, the localization controller being further configured to determine location by comparing reports received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for secure localization, the method comprising:
-
iteratively selecting each of a set of transmission power levels at one or more secure message transmitters (SMTs); generating secure messages (SMs) at one or more of the SMTs, the SMs comprising a set of identifiers comprising identifiers for the SMT transmitting the message and power level used for transmission, and an identifier for each SM itself; requesting each SMT to transmit a specific number of SMs at selected power levels; responsive to the request, transmitting the specific number of SMs at the specified power level to a plurality of reference points (RPs) deployed at known locations; for every RP that receives an SM, reporting the received SM to a localization controller, each report containing an identifier for the RP in addition to the SM received by it; and determining location by comparing reports received. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A localization controller, comprising:
a processor configured to instruct at least one secure message transmitter (SMT) to transmit secure messages (SMs) at a specific power level to a plurality of reference points (RPs) deployed at known locations throughout a localization area, the SMs comprising a set of identifiers comprising identifiers for the SMT transmitting the SMs and power level used for transmission, and an identifier for each SM itself, the processor being further configured to receive SM reports transmitted by the RPs, wherein location can be determined by comparing the SM reports received. - View Dependent Claims (22, 23, 24)
Specification