Adaptive Media Streaming to Mobile Devices: Challenges, Enhancements, and Recommendations

Figure 19

Performance of a reactive algorithm implemented as proposed in Section 6 versus a predictive algorithm using bandwidth geolookups. The experiments are performed using both a 3G scenario and a network switching scenario as described in Section 7. To compare the algorithms on equal terms, one is tested in the real-world setting and the other is simulated using the exact same bandwidth trace. Experiments where the simulated and the real-world algorithms are switched are presented in [10, 11] with similar results.

(a) The predictive quality adaptation algorithm versus the reactive algorithm in a 3G network

(b) The predictive quality adaptation algorithm versus the reactive algorithm when switching between WLAN and 3G

(c) Example of achieved throughput and handovers in the network switching scenario