This paper proposes a power efficient video streaming mechanism on mobile devices over cellular networks. We first develop an analytical model to identify and quantify the power inefficiency in mobile video streaming, due to the mismatch between HTTP request schedule and the radio resource control schedule. Based on the analytical model, we develop a low power video streaming mechanism by employing the server push technology available in the HTTP/2 protocol. We implemented the server push-based low power streaming mechanism in an HTTP DASH video streaming prototype involving mobile devices and the 4G/LTE cellular network. Our experiments show significant battery power savings on mobile devices using our server push strategy.
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