A dynamic control system for adjusting prices and quality of service in DS enabled networks

In the differentiated services (DS) enabled networks, Internet service providers (ISPs) establish service level agreements (SLAs) with their customers. Prices of the SLAs and quality of data transmission services should correspond to the requirements of the customers and operations aims of the ISPs. For this reason, IP domains of the ISPs should contain a control system for setting the selling prices of the SLAs and DS services used for data flows of the SLAs. The control system should consider dynamically both requirements of the customers and quality of end-to-end data transmission services. This task is complex because the customers and operators of other networks may not give useful information to the ISPs for the control task. For this reason, a new fuzzy controller based control system is developed. The system operates using local measurements of ingress routers of IP domains about the behaviour of the customers. It does not inquire the level of satisfaction of the customers about offered data transmission services, or capacities of networks of other operators. The operations of the control system are tested using the Network Simulator 2.