Patent ID: 9699709
Date: 2017-07-04
CPC Classifications: H04L,H04W

Claim:
1. A method comprising: monitoring, by one or more devices, messages relating to communications of mobile devices through a cellular network; receiving, by the one or more devices and based on monitoring the messages, a first subset of the messages that includes a create session request and an identifier of a particular mobile device of the mobile devices, obtaining, by the one or more devices and based on the create session request, a first time stamp associated with the creation of the communication session; receiving, by the one or more devices and based on monitoring the messages, a second subset of the messages that includes a delete session request and the identifier of the particular mobile device, obtaining, by the one or more devices and based on the delete session request, a second time stamp associated with the termination of the communication session, calculating, by the one or more devices, a time difference between the first time stamp and the second time stamp, providing, by the one or more devices, the indication of the time period in which the particular mobile device is transmitting data via the wireless router rather than via the cellular network.