| 摘要 |
A services management sys- tem, which can provide services to a mobile user, can do so via a com- bination of network platforms (10). The system uses "Co-operating In- telligent Software Agent" technol- ogy in a heterogeneous agent archi- tecture (25) to provide enough flex- ibility to deal with changing net- work constraints, for instance as the user moves. In an example, a fixed broadband network might be used in combination with radio transmitters of a mobile network. The agent architecture (25), in- volving autonomous agents work- ing co-operatively, forms a layered system using the underlying fixed network (1) for inter-agent commu- nication. In an application, a mo- bile user might move from a cell of the mobile network which can provide relatively wide bandwidth to one which can only provide lim- ited bandwidth. The service man- agement system can advise the user what services are available in ei- ther cell, at what price, based on current bandwidth usage at the two locations. If the user was already using a service which became unavailable in the new cell, the system will ad vise the user and, if appropriate, put the service effec tively on hold until the user enters a cell in which the service is available once mor e.
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