Patent ID: 11902461
Assignee: T-MOBILE USA, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A computer-implemented method for cellular network outage detection, the method comprising:
receiving requests for connection to a cellular network from a plurality of mobile devices over the cellular network;
sending, in response to the cellular network connection requests, authorization requests between a packet data network gateway (PGW) connected to the cellular network and a policy and charging rules function (PCRF) for a first time period;
monitoring error rates for the authorization requests for the first time period, the error rates including messages from the PCRF;
determining a threshold error rate for the PCRF based on the error rates monitored during the first time period;
detecting an excessive error rate for the authorization requests between the PGW and the PCRF during a second time period subsequent the first time period, the excessive error rate being in excess of the threshold error rate; and
in response to detecting the excessive error rate in the second time period, executing an override rule that includes stopping the authorization requests between the PGW and the PCRF.