Abstract:
In a data communications system, including an infrastructure arranged to communicate over a data channel with a plurality of data terminals (109), a method of detecting data decryption errors in a data packet includes receiving an encrypted data packet (213); decrypting the encrypted data packet to provide a decrypted data packet (215); and comparing a reference value to a portion of the decrypted data packet (219) to determine when a predetermined relationship is satisfied (221).
Abstract:
In a data communications system operating on a registered data channel and including an infrastructure (100) and a subscriber terminal (115), a method of making a channel exit decision at the subscriber terminal includes: sampling (201) the registered data channel for a time period, preferably a signal time period and a data time each of which may be an adaptable time period to obtain a plurality of quality values, preferably signal values and data quality values; comparing (203, 213) each of the plurality of quality values to a threshold; and initiating (225) an exit procedure, preferably including a quick scan for a possible data channel, when a first number of the plurality of quality values obtained during the time period does not satisfy the threshold.