Jamming Wi-Fi communications
AssigneeWintego Systems Ltd.
InventorEliezer Shaham
Life of this patent
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Abstract
An apparatus for jamming transmissions on a wireless network a signal generator and processor circuitry. The signal generator generates jamming signals. The processor circuitry demodulates a wireless signal received over the wireless network in accordance with an IEEE 802.11 standard and identifies a media access control (MAC) header within the demodulated signal. The MAC header includes a duration and at least one address. Frames are identified for jamming based on an analysis of the at least one address. When a frame for jamming is identified, a time period for jamming the wireless signal is calculated based on the duration and the signal generator is controlled to generate a jamming signal during the calculated time period.
Claims24
An apparatus for jamming transmissions on a wireless network, comprising:
- a signal generator, configured to generate jamming signals;
- and processor circuitry associated with said signal generator, configured to:
- demodulate a wireless signal received over said wireless network in accordance with an IEEE 802.11 standard;
- identify a media access control (MAC) header within said demodulated signal, said MAC header comprising a duration and at least one address;
- identify frames for jamming based on an analysis of said at least one address by identifying said at least one address as a target address when said at least one address is listed in a list of target addresses of specified devices participating in said wireless network and predetermined as devices targeted for jamming;
- and when a frame for jamming is identified, calculate a time period for jamming said wireless signal, said calculated time period being no longer then said duration and control said signal generator to generate a jamming signal during said calculated time period to block communication exchange between specific participants of said wireless network by jamming a transmission of a specific device with said generated jamming signal.
A method for jamming transmissions on a wireless network, comprising:
- demodulating a received wireless signal in accordance with an IEEE 802.11 standard;
- detecting a media access control (MAC) header within said demodulated signal, said MAC header comprising a duration and at least one address;
- identifying frames for jamming based on an analysis of said at least one address by identifying said at least one address as a target address when said at least one address is listed in a list of target addresses of specified devices participating in said wireless network and predetermined as devices targeted for jamming;
- and when a frame for jamming is identified, calculating a time period for jamming said wireless signal, said calculated time period being no longer then said duration and generate a jamming signal during said calculated time period to block communication exchange between specific participants of said wireless network by jamming a transmission of a specific device with said generated jamming signal.
Dependencies are inferred from the claim text.