| Summary: | 博士 === 國立成功大學 === 資訊工程學系 === 102 === With the development of vehicular networks, new types of networking services arise for automotive users. Since vehicles have high mobility, it is difficult to keep stable and reliable network connections between vehicles. With regard to multimedia streaming services, a vehicle may not have good QoS of video streaming using its own individual 3G/3.5G wireless interface. This dissertation is motivated to investigate the cooperative streaming scenario in the vehicular network. When a vehicle, which is called requester, requests a video stream from the Internet using its 3G/3.5G network, it asks helps from vehicles within its k-hop transmission range, in which these vehicles are called helpers, to download the requested video data cooperatively through these vehicles' 3G/3.5G network and then forward these downloaded video to the requested vehicle through V2V Dedicated Short-Range Communication (DSRC) networks. Since the topology of a vehicular network may change dynamically, a QoS-awarely cooperative video streaming control protocol is proposed to have better throughput of cooperative video streaming. We simulate the proposed schemes over (1) the 1-hop non-fleet based cooperative video streaming system, (2) the 1-hop fleet based cooperative video streaming system and (3) the k-hop fleet based cooperative video streaming system.
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