This paper investigates the issue of Quality of Experience(QoE)for multimedia services over heterogeneous networks. Anew concept of “Isomor-phism Flow”(iFlow) was introduced for analyzing multimedia traffics, which is inspired by the abstract algebrabased on experimental research. By using iF-low, the multimedia traffics with similar QoErequirements for differentusersare aggregated. AQoE evaluation method was also proposed for the aggregated traffics. Then a new cross-domain QoE guarantee method based on the iFlow QoEis proposed in this paper to adjust the network resource fromthe perspec-tive of user perception.The proposed scheme is validated through simulations. Simulationresults show that the proposed scheme achieves an enhancement in QoE performanceandoutperforms the existing schemes
