| 摘要 |
In the field of Quality-of-Service (QoS) management for adaptive real-time services running on mobile devices which support different access technologies in dynamic wireless Internet Protocol (IP) networks, the connectivity of the applied nodes is unpredictable time-varying. In this context, a QoS management unit ( 304 ) is proposed that allows adaptive applications with real-time requirements in typical mobile wireless scenarios-e.g. a radio link with a changing transmission quality and handover procedures ( 2900 )-to adaptively and responsively react to a time-varying network topology and different radio link characteristics. Said QoS management unit ( 304 ) provides methods of pre-allocating, reserving, monitoring and adapting QoS-related parameters in a dynamic mobile environment. The QoS management unit ( 304 ) comprises at least one analysis unit ( 306 ) which evaluates QoS requests received from other nodes ( 402 a/b , 404 ) to inform the application unit ( 328 ) of said mobile terminal ( 208 ) about the current QoS situation, at least one processing unit ( 312 ) that manages request messages ( 1200, 2000, 2400 ) for each type of QoS request, at least one monitoring unit ( 318 ) which monitors the current QoS situation within said mobile node ( 208 ) and initiates requests by activating the processing unit ( 312 ), and at least one generation unit ( 322 ) which is responsible for generating QoS requests or passing them on to the QoS management units ( 304 ) of other nodes ( 402 a+b , 404 ).
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