Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fresher Content or Smoother Playback? A Brownian-Approximation Framework
  for Scheduling Real-Time Wireless Video Streams   This paper presents a Brownian-approximation framework to optimize the
quality of experience (QoE) for real-time video streaming in wireless networks.
In real-time video streaming, one major challenge is to tackle the natural
tension between the two most critical QoE metrics: playback latency and video
interruption. To study this trade-off, we first propose an analytical model
that precisely captures all aspects of the playback process of a real-time
video stream, including playback latency, video interruptions, and packet
dropping. Built on this model, we show that the playback process of a real-time
video can be approximated by a two-sided reflected Brownian motion. Through
such Brownian approximation, we are able to study the fundamental limits of the
two QoE metrics and characterize a necessary and sufficient condition for a set
of QoE performance requirements to be feasible. We propose a scheduling policy
that satisfies any feasible set of QoE performance requirements and then obtain
simple rules on the trade-off between playback latency and the video interrupt
rates, in both heavy-traffic and under-loaded regimes. Finally, simulation
results verify the accuracy of the proposed approximation and show that the
proposed policy outperforms other popular baseline policies.

24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph