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AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsBernard Smeets, Raihan Rafique, Leif Wilhelmsson
Estimating the term…
Various embodiments of the present disclosure provide for a method and apparatuses that perform spatial encoding in a multipath environment such that transmissions on different beams are separately encrypted with complex codes such that when the transmissions on the different beams are received at the receiver, the separate encryptions are cancelled out. The transmissions can also have time delay, gain, and phase modifications made to the transmissions such that the automatic self-decryption is performed within a predefined distance of where the receiver is determined to be. In this way, encryption/decryption keys do not have to be sent to the receiver, and unauthorized devices that intercept the beams at a location other than the receiver location will not be able to decrypt the communication.
A method performed by transmitter node for spatially encrypting a communication in a multipath environment, the method comprising:
A transmitter node configured to spatially encrypt a communication in a multipath environment comprising a radio interface and processing circuitry configured to:
Dependencies are inferred from the claim text.