Patent ID: 9565295
Date: 2017-02-07
CPC Classifications: H04L,H04M,H04W

Claim:
1. A method for reconstructing bidirectional call content of calls conducted between wireless communication terminals, the method being exclusively based on downlink transmissions without a need to receive any uplink channels, the method comprising: receiving, by a monitoring system, multiple downlink transmissions that have been or are being transmitted from at least one base station or satellite of at least one wireless communication network to wireless communication terminals of the at least one wireless communication network; identifying, by the monitoring system, among the multiple downlink transmissions, a pair of first and second downlink transmissions that carry respective first and second opposite directions of a given terminal-to-terminal call, wherein the monitoring system has no prior identification of pairs of downlink transmissions; and reconstructing, by the monitoring system, a bidirectional content of the given call from the identified first and second downlink transmissions.