Patent ID: 11943621
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. An apparatus, comprising:
a non-transitory memory storing application instructions; and
a processor coupled to the non-transitory memory and configured to execute the application instructions to cause the processor to:
determine a first value for a localization tone;
generate a modified localization tone such that, after whitening and encrypting, the modified localization tone returns to the first value;
insert the modified localization tone into a data packet at an application layer of a communication protocol stack, the modified localization tone preceding data of a payload of the data packet and having a last bit immediately preceding a first bit of the data of the payload;
whiten the data packet after inserting the modified localization tone into the data packet;
encrypt the data packet after inserting the modified localization tone into the data packet; and
transmit the data packet after the whitening and the encrypting the data packet, wherein executing the application instructions configures the processor to:
encrypt the data packet using an encryption process, and
set a length of the localization tone to be equal to a multiple of a block size of the encryption process.