Patent ID: 11882454
Assignee: LAMBDA:4 ENTWICKLUNGEN GMBH
Field: Digital communication (Electrical engineering)
Classification: CPC B  H  G | IPC H

Claim 11:
12. A radio authorization system, comprising a first transceiver in or on a first object and a second transceiver in or on a second object, wherein the radio authorization system is designed to transmit a plurality of symbols or chips at a first symbol or chip rate encoded in at least one first analog data signal from the first transceiver to the second transceiver, and to transmit a plurality of symbols or chips encoded in at least one second analog data signal at a second symbol or chip rate or at the first symbol or chip rate from the second transceiver to the first transceiver;
wherein the radio authorization system is designed to acquire and analyze an input signal received at the first transceiver in a radio communication between the first transceiver and the second transceiver, and is designed to determine a metric of a spectral distribution of the input signal and is designed to compare the metric of the spectral distribution of the input signal determined with at least one predetermined span, wherein the radio authorization system is designed such that:
a. the input signal is considered to be an attack or a signal with which the radio authorization system is unfamiliar or approval is denied if the metric of the spectral distribution determined is outside the at least one predetermined span; or
b. the input signal is considered to be a signal of the radio authorization system or approval is granted if the metric of the spectral distribution is within the at least one predetermined span;
wherein the radio authorization system is designed to determine the predetermined span solely on a basis of data predetermined in the radio authorization system or signals of the radio authorization system;
wherein the second transceiver is designed to emit at least one enabling signal such that the metric of the spectral distribution of the at least one enabling signal is within the at least one predetermined span;
wherein the second transceiver or the second object is/are designed to determine the at least one enabling signal solely on the basis of data predetermined in the radio authorization system or on the basis of signals of the radio authorization system;
wherein the second transceiver or the second object is/are designed to send the at least one enabling signal as part of the at least one second analog data signal and to encode information in the at least one enabling signal in a plurality of symbols or chips.