Patent ID: 7836171
Filing Date: 2010-11-16
Classification: H04B,H04L

Abstract:
1. A communication monitoring apparatus, comprising: a receiver, which is arranged to intercept one or more communication links, which are part of a communication system that includes a plurality of the communication links, and to decode data content carried by the one or more communication links; and a processor, which is arranged to compute first and second fingerprints related to the one or more communication links by evaluating statistical characteristics of the data content decoded from the one or more communication links, to compare the first and second fingerprints to produce a matching result, and to perform a predefined action with respect to the one or more communication links responsively to the matching result, wherein the receiver is arranged to monitor first and second resources of the communication system used by respective first and second communication links during respective first and second different time intervals, and wherein the processor is arranged to compute the first and second fingerprints by evaluating respective first and second statistical characteristics of first and second data content decoded from the first and second communication links during the first and second time intervals, and to detect that the first communication link switched from the first resource to the second resource between the first time interval and the second time interval to form the second communication link by comparing the first and second fingerprints, and wherein the receiver is arranged to continue intercepting the second communication link by monitoring the second resource.