Throughput and Delay Analysis in Video Streaming over Block-Fading Channels
Giuseppe Cocco, Deniz G\"und\"uz, Christian Ibars

TL;DR
This paper analyzes the tradeoffs between throughput and delay in video streaming over slow fading channels, proposing transmission schemes and bounds to optimize user experience under delay constraints.
Contribution
It introduces new transmission strategies and theoretical bounds for streaming over fading channels, balancing throughput and delay performance.
Findings
Adaptive packet-level rate control improves throughput-delay tradeoff
Initial buffering reduces packet loss at the cost of delay
Genie-aided bounds establish theoretical performance limits
Abstract
We study video streaming over a slow fading wireless channel. In a streaming application video packets are required to be decoded and displayed in the order they are transmitted as the transmission goes on. This results in per-packet delay constraints, and the resulting channel can be modeled as a physically degraded fading broadcast channel with as many virtual users as the number of packets. In this paper we study two important quality of user experience (QoE) metrics, namely throughput and inter-decoding delay. We introduce several transmission schemes, and compare their throughput and maximum inter-decoding delay performances. We also introduce a genie-aided scheme, which provides theoretical bounds on the achievable performance. We observe that adapting the transmission rate at the packet level, i.e., periodically dropping a subset of the packets, leads to a good tradeoff between…
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Taxonomy
TopicsAdvanced Wireless Network Optimization · Cooperative Communication and Network Coding · Image and Video Quality Assessment
