QoS-aware data forwarding architecture for multimedia streaming services in hybrid peer-to-peer networks

In recent years, the computing paradigm changes dramatically because a wide range of computing devices are deployed rapidly. These changes of computing environment mean that the computing paradigm has been moved to the computing paradigm based on cloud & grid computing from PC oriented client/server computing paradigm. It also means that hybrid peer-to-peer network technologies have very important roles in this paradigm shift. But so far, these changing of the computing circumstances can not be provided a satisfaction in terms of quality of service, and it is also the same in the hybrid peer-to-peer networks. In particular, although the quality of service mechanism which reflects the changing of these paradigm has to be introduced to the networks, a study of QoS provisioning mechanism is yet, insufficient. In this paper, Qos-Aware Data Forwarding Architecture (QDFA) is proposed to guarantee QoS of multimedia streaming services in hybrid peer-to-peer networks. The proposed QDFA performs end-to-end synchronization processes to provide QoS of multimedia streaming services. In the synchronization processes, QDFA measures accurate time based on IEEE 1588, and sets the synchronized paths. when transmits the packet to the synchronized paths, the proposed QDFA based on the synchronized time bypasses the packet to the next hop without processing delay. The proposed QDFA guarantees multimedia streaming service quality in hybrid peer-to-peer networks through these mechanisms. To prove the excellence of the proposed QDFA, it is compared with other packet forwarding scheme through OPNET.