Patent ID: 7894815
Filing Date: 2011-02-22
Classification: H04W

Abstract:
1. An apparatus for managing a quality of service (QoS) of a vertical hand-off operation of heterogeneous access systems, the apparatus comprising: a QoS negotiation managing unit for negotiating the QoS according to a vertical hand-off request between a serving access system and a target access system of a terminal, wherein the serving access system and the target access system are heterogeneous access systems and the hand-off request is a request for a vertical hand-off for transferring the connection between the terminal and the serving access system to between the terminal and the target access system in order to provide a service provided from the serving access system through the target access system; and an access system interface unit for requesting a QoS context for negotiating the QoS from the serving access system of the terminal in order to receive the requested QoS context, the QoS context being associated with QoS for the connection between the terminal and the serving access system established prior to the vertical hand-off, and for transmitting QoS information negotiated by the QoS negotiation managing unit to the target access system of the terminal for the connection transferred to between the terminal and the target access system.