Patent ID: 11898440
Assignee: RAPTOR DATA LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E  G  H | IPC E  G  H

Claim 17:
18. A system for determining a suitability of one or more frequency bands for data communication between a first node and a second node by way of a communication channel, the system comprising:
a first apparatus of a first node, comprising:
a first receiver;
a first transmitter; and
first processing circuitry communicatively coupled to the first receiver and the first transmitter, the first processing circuitry being configured to cause the first transmitter to transmit to the second node, by way of the communication channel, first and second signals each comprising frequencies in the frequency band, the first signal comprising a calibration signal and the second signal comprising predetermined reference data, and wherein the first receiver is configured to receive, by way of the communication channel, an indication from the second node of the suitability of the frequency band for data communication with the second node; and

a second apparatus of the second node, comprising:
a second receiver configured to receive the first and second signals from the first node by way of the communication channel; and
second processing circuitry communicatively coupled to the second receiver, the second processing circuitry being configured to determine a calibration function depending on the first signal, process the second signal depending on the calibration function, determine the suitability of the frequency band for data communication with the first node by way of the communication channel depending on the processed second signal, and output the indication of the suitability, wherein the second processing circuitry is configured to determine the suitability of the frequency band for data communication with the first node depending on the processed second signal by comparison of the processed second signal to the predetermined reference data.