Patent ID: 8565439
Filing Date: 2013-10-22
Classification: B60R,H04K

Abstract:
1. A method for detecting scrambling of a radiocommunication network, said method being implemented by a radiocommunication circuit configured to connect to said network by being synchronized on a radiocommunication channel, said method comprising: performing a final detection phase, comprising the following steps: verifying a final condition by determining if there exists N radiocommunication channels having a power level normally sufficient for synchronization and whereon the radiocommunication circuit cannot synchronize, wherein N is an integer and N≧2; in response to the final condition being verified, generating a final scrambling signal with a probability of scrambling equal to 100%; and performing at least one intermediate detection phase, comprising the following steps: verifying at least one intermediate condition, wherein the at least one intermediate condition is a member of the group consisting of: loss of synchronization on all synchronized cells although reception strength levels detected on said cells has not dropped; a power level greater than a predetermined threshold for all or at least one predetermined proportion of the radiocommunication channels of which the frequency is comprised in at least one band of operation of the radiocommunication circuit; and there exists N′ radiocommunication channels whereon said radiocommunication circuit cannot be synchronized despite detection of a power level normally sufficient for being synchronized, wherein N′ is an integer and N′<N; and in response to the at least one intermediate condition being verified, generating at least one intermediate scrambling signal with a probability of scrambling less than 100%.