A method for providing location based service in a cellular data service network (CDSN) by analyzing accounting data packets of the CDSN to determine a user mobility pattern, classifying application data packets of the CDSN into pre-determined application categories, analyzing the accounting data packets and the application data packets to associate the user mobility pattern and one of the pre-determined application category, comparing a newly received accounting data packet and the user mobility pattern to identify a match, and providing, in response to identifying the match, the location based service to a user based on the pre-determined application category.