An Active Session Handoff Method for Mobile Services Based on Context Prediction

The stability of service which is grounded on the continuity of session is one of the major challenges in providing reliable service for the platforms which are always moving, such as vehicles, ships, and aircrafts. This paper analyzes the research status of quality assurance for service sessions in a mobile environment, and proposes a context prediction based active handoff method for mobile service sessions, including an access model based on incremental session state backup and QoS perception, and an active handoff model for session based on context prediction and QoS available threshold, to solve the problem of QoS fluctuation and failure in a mobile environment.