Establishing association between QoS properties in service oriented architecture

Quality of service (QoS) is an important criterion for Web service selection. The work in this paper is based on QoS IC (QoS Information & Computation) framework in Taher, L. et al., (2005). QoS IC framework supports QoS-based service selection in service oriented architecture (SOA). In this paper, we extend the functionality of QoS manager component of QoS IC framework with QoS-constraints model. QoS-constraints establish association relationship between different QoS properties and are used to govern the QoS matchmaking process in the underlying QoS matchmaking algorithm. The matchmaking process maps QoS requirements of consumers with the published QoS information of providers. We enhance the matchmaking algorithm to accommodate QoS-constraints.