Patent ID: 9277429
Filing Date: 2016-03-01
CPC Classification: H04L,H04W

Claim Text:
1. A method of identifying a user plane identifier of a user device by a monitoring probe in communication with a first network device and a second network device, the method comprising: monitoring the first network device for receipt of a first control plane message comprising a first control plane identifier and a user device identifier; in response to receipt of the first control plane message, monitoring the second network device for receipt of a second control plane message comprising a second control plane identifier and a user plane identifier; in response to receipt of the second control plane message, comparing the first control plane identifier with the second control plane identifier in order to determine whether or not the first control plane identifier corresponds to the second control plane identifier; in response to a determination that the first control plane identifier corresponds to the second control plane identifier, outputting the user plane identifier such that the user plane identifier is identified as the user plane identifier of the user device; monitoring the second network device for receipt of a third control plane message comprising another user device identifier and a third control plane identifier; in response to receipt of the third control plane message, monitoring a third network device for receipt of a fourth control plane message comprising a fourth control plane identifier and a first control plane parameter; in response to receipt of a fourth control plane message, comparing the third control plane identifier with the fourth control plane identifier in order to determine whether or not the third control plane identifier corresponds to the fourth control plane identifier; in response to a determination that the third control plane identifier corresponds to the fourth control plane identifier, monitoring the first network device for receipt of a fifth control plane message comprising a sixth control plane message and a seventh control plane message; in response to receipt of a fifth control plane message, comparing the comparing the first control plane parameter with the second control plane parameter in order to determine whether or not the first control plane parameter corresponds to the second control plane parameter; in response to a determination that the first control plane parameter corresponds to the second control plane parameter, comparing the sixth control plane message with the first control plane identifier in order to determine whether or not the sixth control plane message corresponds to the first control plane identifier; and in response to a determination that the sixth control plane message corresponds to the first control plane identifier, outputting the other user device identifier such that the other user plane identifier is identified as the user plane identifier of the user device.