Enhancing Mobile Video Streaming Quality with Streamloading
Streamloading presents a cost-effective solution for high-quality video streaming on mobile devices. By utilizing a layered approach and optimizing data delivery based on user proximity to base stations, Streamloading ensures a seamless streaming experience. The implementation involves encoding chunks in multiple layers, transmission scheduling, and analysis of video data chunks. Results show improved video quality and speed for users, making Streamloading a promising advancement in the field of mobile video streaming.
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Streamloading: Low Cost High Quality Video Streaming for Mobile Users AYASKANT RATH, SANJAY GOYAL, AND SHIVENDRA PANWAR MOVID 13 1
Introduction Cellular data traffic will grow by over 8 times in the next four years. A user located closer to a base station experiences a higher data rate. Data rate available to a user almost instantaneously reflects on the quality of video. Streamloading: SVC Streaming base layer Downloading enhancement layers 2
Streaming V.S. Downloading Streaming: Cache short period of video data Downloading: Cache as much of the video as network bandwidth allows Streaming drawback: Cannot cache future chucks of video Video quality drops as soon as they move away from the base station 3
Streamloading Stream the base layer data Download the enhancement layer data 4
Implementation ci: ith chunk, 0 <= i <= N Each ciis encoded in M layers sij: subchunk of chunk ci, si0is base layer, 0 <= j <= M b : buffer size in term of chunk 5
Simulation Model Macrocell: WiMAX Femtocell: WiFi hotspot Transmission Scheduling: TDMA, 2ms 6
Video Data Chunk length: 1.2s Videos length: 100m N = 5000 M = 4 7
Results and Analyses Average speed of 11 mph b = 4 chunks Streamloading service provides more than two enhancement layers of video the users on the average 8
Results and Analyses (cont.) 66 users consuming ED videos 31 users consuming HD videos 9
Results and Analyses (cont.) Without fetmocell b = 3 chunks Only CIF video (a) At 340 users, streamloading delivers up to two additional layers of video (b)streamloading: more than 82% were perfect quality 10
Conclusion With 20 femtocells: Streamloading can serve more than 50% additional users with near perfect video quality Without femtocells: This number is found to be as high as 35% They proposed a novel video delivery service, streamloading: Streaming base layer Downloading enhancement layers In the worst case is no worse than streaming In the best case is as good as downloading 11
