Joint Power Control and Rate Adaptation for Video Streaming in Wireless Networks with Time-Varying Interference

Ayaz Ahmad, Naveed Ul Hassan, Mohamad Assaad, Tembine Hamidou

Research output: Contribution to journalArticle

Abstract

This paper considers a cross-layer optimization framework for video streaming in multinode wireless networks with a time-varying interference environment. We develop a distributed joint power control and rate adaptation framework that exploits the time diversity of the wireless channels, satisfies the hard delay constraints associated with video applications, and respects a certain fairness criterion among the nodes. The proposed framework performs power allocation at the physical/media access control layers to achieve a certain target signal-to-interference-plus-noise ratio, such that the difference between the arrival and the departure rates at the queues is very small, and performs video rate adaptation at the video coding layer (upper layer) according to the nodes' demanded video quality, their channel conditions, and a given fairness criterion. A main challenge here is that the adaptation of the video rate and the power control is not performed at the same time scale. We deal with this issue and model the power and rate variations of the nodes as linear stochastic dynamic equations and formulate a risk-sensitive control problem that captures the hard delay constraints of the video services and the fairness criterion for resource utilization. We provide an optimal solution for this control problem and illustrate the performance of our framework through simulations.

Original languageEnglish (US)
Article number7273961
Pages (from-to)6315-6329
Number of pages15
JournalIEEE Transactions on Vehicular Technology
Volume65
Issue number8
DOIs
StatePublished - Aug 1 2016

Fingerprint

Rate Adaptation
Video Streaming
Video streaming
Power Control
Power control
Wireless Networks
Wireless networks
Time-varying
Interference
Fairness
Medium access control
Image coding
Control Problem
Vertex of a graph
Risk-sensitive Control
Cross-layer Optimization
Video Quality
Medium Access Control
Video Coding
Power Allocation

Keywords

  • Power control
  • rate adaptation
  • video streaming

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Computer Networks and Communications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Joint Power Control and Rate Adaptation for Video Streaming in Wireless Networks with Time-Varying Interference. / Ahmad, Ayaz; Ul Hassan, Naveed; Assaad, Mohamad; Hamidou, Tembine.

In: IEEE Transactions on Vehicular Technology, Vol. 65, No. 8, 7273961, 01.08.2016, p. 6315-6329.

Research output: Contribution to journalArticle

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