Video Streaming over the LWA Systems

In this paper, a quality-driven packet scheduling algorithm for DASH streaming is proposed for the LTE Wi-Fi Aggregation (LWA) systems. The playback buffer status on the receiver side and the network conditions for LTE and Wi-Fi are used to effectively control the video rate. To estimate the network conditions, the distributions of the packet inter-arrival times of both paths are used. The playback buffer is modeled to find the probability of the successful arrival of the assigned video packets before the playback buffer depletes. A convex optimization method is used to find the optimal packet distribution for the LTE and Wi-Fi. Simulation results based on NS-3 show that the proposed algorithm can stream the video with the best quality in terms of the utility while having less probability than other methods of re-buffering while the video is playing.