This book aims at the design and implementation of a prototypical charging component for mobile grid services. Charging is used to calculate the charge for service usage that is subsequently used to create the bills of customers. In mobile grid services, the basis to calculate the charge are the accounting parameters, measured and stored in a database. Tariff schemes are designed to define how these accounting parameters together with pre-defined prices are used to calculate the charge. In mobile grid services, the charging component has to be flexible to adapt to new resource parameters. Discounts and benefits are also necessary to support charging services provided by the customers and to give discounts if the service quality was not sufficient. Charge calculations are managed completely according to the tariff scheme, allowing the charging component to be adaptable to changes of accounting parameters, prices and tariff schemes. The implementation of the charging component in Java is based on the requirements for mobile grid services. It is flexible and it supports charging for hierarchical sessions and discount parameters.

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