Patent ID: 8565429
Filing Date: 2013-10-22
Classification: H04L,H04W

Abstract:
1. A method for resynchronizing an error detection datum in a communication network, comprising: forming an authentication information item for a first communication subscriber using a first error detection datum and an information item concerning a random datum, the first communication subscriber being a service provider; transmitting the authentication information item and the information item concerning the random datum, from the first communication subscriber to a second communication subscriber, the second communication subscriber being a service user; forming a second error detection datum at the second communication subscriber using the authentication information item and the information item concerning the random datum; checking whether the second error detection datum lies in a predetermined range, the second error detection datum being checked by the second communication subscriber by a process comprising: transmitting the sequence error from the second communication subscriber to the first communication subscriber; and resynchronyzing the first error detection datum using the sequence error wherein the sequence error is transmitted to the first communication subscriber without the first communication subscriber first transmitting a resynchronization request to the second communication subscriber, the sequence error contains the information item concerning the random datum and contains the second error detection datum, the first communication subscriber verifies the sequence error, and the first communication subscriber changes a value of the first error detection datum in dependence on a value of the second error detection datum to thereby resynchronize the first error detection datum.