Patent ID: 7564952

Claim:
A radio access network system which gives an analysis of fault for radio communications of a mobile terminal, the system comprising: a control equipment for controlling calls for the mobile terminal, which receives a signal analysis request command with a user identifier to be monitored, outputs a signal monitor request including the user identifier and performs monitoring operation for control signals of calls related to the mobile terminal specified by the user identifier in accordance with the signal analysis request command, and outputs monitored control signals when the monitoring operation has been completed; a relay equipment for relaying control signals between the mobile terminal and the control equipment, which receives the signal monitor request, performs monitoring operation for control signals of calls related to the mobile terminal specified by the user identifier in accordance with the signal monitor request, and outputs monitored control signals when the monitoring operation has been completed; and a data collection and analysis equipment, which receives monitored control signals output from the control equipment and the relay equipment, combines the monitored control signals from the control equipment and the monitored control signals from the relay equipment based on the user identifier, reorders the combined control signals based on time index attached to respective control signals, and outputs the reordered control signals for fault analysis.