Service problem diagnosis for mobile wireless networks

摘要

A method for determining location of a failure causing degradation of a service in a mobile communications network is disclosed. Service trajectories for the mobile terminals are determined (104) by correlating earlier obtained movement trajectories (102) of individual mobile terminals with service session records of the mobile terminals. In the next step distributions of the service trajectories of mobile terminals with degraded service are determined and then a network element around which the service trajectories converge is identified (108) as the location of the failure. An apparatus, a communications network and a computer program product are also disclosed.

主权项

1. A method of determining a location of a failure causing degradation of a service in a mobile communications network comprising:
obtaining movement trajectories of mobile terminals operating in the network, wherein the movement trajectory of a mobile terminal is the path the moving mobile terminal follows through space as a function of time; determining service trajectories for the mobile terminals by correlating the movement trajectories of individual mobile terminals with service session records of the mobile terminals, wherein the service session records of the same service from the same mobile terminal are merged if a time gap between the two service session records is not longer than an observation window; determining distribution of the service trajectories of mobile terminals with degraded service; and identifying a network element around which the service trajectories converge as the location of the failure.