Method and system for securing wireless communications

Abstract

A method and system for securing wireless communications is disclosed. In on embodiment, different security policies are used based on the distance between a receiver and a transmitter, whereby data in the wireless communications can only be demodulated if received in particular trust zones. In another embodiment, a plurality of bit stream fragments are transmitted by a plurality of transmitters to a receiver located in an area where transmission patterns radiated by the transmitters intersect. Alternatively, the receiver performs a function on packet data units (PDUs) transmitted by the transmitters. In yet another embodiment, primary modulation points of a modulation points which can be demodulated only by a receiver that is within range of the transmitter. In yet another embodiment, a main waveform is transmitted which overlays a QPSK signal with hierarchical modulation (HM) having encoded descrambling information.

Description

Method and system for ensuring wireless communication The patent application of this invention is an invention with the international application number PCT / US2005 / 041976, the international application date is November 21, 2005, the application number entering the Chinese national phase is 200580039662.9, and the invention title is "Method and System for Ensuring Wireless Communication" A divisional application of a patent application. technical field The present invention relates generally to wireless communications. More particularly, the present invention relates to a method and apparatus for securing wireless communications by strategically locating sources and / or recipients of such communications. Background technique As wireless connectivity becomes more pervasive and reliable, it is expected that all digital computing, data storage and media storage devices in widespread use today will become part of an ad-hoc wireless communication network. But such networks are...

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Problems solved by technology

Furthermore, it would be desirable to ensure that any information to be transmitted to a user is only accessible at the user's location, such that an "eavesdropper" located near the user but not at the user's current location cannot receive transmissions to the user. full message from

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