QoS Management on Mobile IP Networks using COPS-PR

This paper describes and evaluates a framework for managing differentiated services configuration on mobile IP-based networks. In the considered scenario, users can keep their QoS privileges while they move along through different access networks interconnected by a DiffServ domain. The edge routers receive the DiffServ configuration dynamically, according to the authentication events registered by the home agent during the mobile node´s handoff. The proposed framework is based on the IETF standards concerning DiffServ management. The device configuration is represented in terms of a DiffServ PIB, which is distributed to the DiffServ edge routers using the COPS-PR protocol. By exploring the COPS-PR facilities, it is defined an efficient strategy for updating the PIB information in the managed devices without generating excessive management traffic. By properly exploring the COPS-PR facilities, the latency introduced by the COPS-PR management is not significant when compared with the mobile IP handoff latency