Scalable Video Streaming With Utilization of Multiple Radio Interfaces: A Customized Method for Signaling and Bandwidth Estimation
Scalable video coding allows to stream the multimedia content in hierarchically structured flows selected by the client due to his quality needs. In this paper, the authors aim to improve the mobile user's media experience by a utilization of multiple wireless interfaces of the user's terminal over which the flows are streamed. Thereby, they mitigate the factors of varying cell load, fading effects, and interference, which result in fluctuations in the link quality. They first introduce appropriate server and client entities and provide a signaling method for switching codec layers to the most suitable wireless interface. They verify the performance of the operation of the signaling mechanism using WLAN and UMTS as examples.