Patent ID: 8213433
Filing Date: 2012-07-03
Classification: H04L

Abstract:
1. A method for ensuring quality of service (QoS), the method comprising: querying service level agreement (SLA) information according to a user identity, wherein the SLA information includes different service levels signed by a user with the user identity; obtaining a service level from the different service levels; and notifying a service-specific server to provide services for the user according to the obtained service level; checking whether the user has subscribed to multiple service levels according to the SLA information of the user, and if the user has subscribed to the multiple service levels, monitoring, during the process of providing the services for the user by the service-specific server, a service level change event for the user through periodically detecting a request for changing at least one of the multiple service levels and the SLA information, wherein the service level change event comprising a service level identity for identifying a new service level and the user identity; querying the SLA information according to the user identity in the service level change event and obtaining the new service level from the different service levels according to the service level identity, when the service level change event occurs; and notifying the service-specific server to provide the services for the user according to the new service level.