With the development of heterogeneous networks and video coding standards, multiresolution video applications over networks\r\nbecome important. It is critical to ensure the service quality of the network for time-sensitive video services.Worldwide Interoperability\r\nforMicrowave Access (WIMAX) is a good candidate for delivering video signals because through WIMAX the delivery quality\r\nbased on the quality-of-service (QoS) setting can be guaranteed. The selection of suitable QoS parameters is, however, not trivial\r\nfor service users. Instead, what a video service user really concerns with is the video quality of presentation (QoP) which includes\r\nthe video resolution, the fidelity, and the frame rate. In this paper, we present a quality control mechanism inmultiresolution video\r\ncoding structures over WIMAX networks and also investigate the relationship between QoP and QoS in end-to-end connections.\r\nConsequently, the video presentation quality can be simply mapped to the network requirements by a mapping table, and then the\r\nend-to-end QoS is achieved.We performed experiments withmultiresolutionMPEG coding over WIMAX networks. In addition to\r\nthe QoP parameters, the video characteristics, such as, the picture activity and the video mobility, also affect the QoS significantly.
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