Patent ID: 11943126
Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The system of claim 1, wherein the entity-level analysis comprises:
selecting, from a plurality of entities between the pair of core routers, entities that are a major source of traffic to the pair of core routers;
calculating an entity-level utilization for the entity, wherein the entity-level utilization comprises a proportion of traffic between the entity and a destination core router of the pair of core routers relative to all traffic between the pair of core routers;
generating a daily time series for the plurality of entities between the pair of core routers, the daily time series comprising entity-level utilizations between an entity of the plurality of entities and the pair of core routers for a particular hour of the day;
calculating a standard deviation and an autoregressive integrated moving average confidence interval for the utilizations of the pair of core routers for the traffic associated with the entity and the pair of core routers;
determining if an hourly utilization of the pair of core routers exceeds the standard deviation from an average utilization for the pair of core routers for the traffic associated with the entity;
if a determination is made that the hourly utilization of the pair of core routers for the traffic associated with the entity exceeds the standard deviation from the average utilization for the pair of core routers, determining if the hourly utilization of the pair of core routers for the traffic associated with the entity exceeds the autoregressive integrated moving average confidence interval for the utilizations of the pair of core routers; and
if a determination is made that the hourly utilization of the pair of core routers for the traffic associated with the entity exceeds the autoregressive integrated moving average confidence interval for the utilizations of the pair of core routers, determining that the entity is responsible for the traffic pattern shift in the network.