Real-Time Video Streaming in Multi-hop Wireless Static Ad Hoc Networks

TL;DR

This paper presents a new interference model and scheduling algorithm for real-time multi-stream video transmission in static multi-hop wireless ad hoc networks, demonstrating stable throughput in simulations.

Contribution

Introduces a variable interference radius model and a localized flow-control algorithm for optimized video streaming in static wireless networks.

Findings

The scheduling algorithm achieves SINR-feasible throughput.

Simulations confirm stable and predictable throughput.

The interference model improves scheduling accuracy.

Abstract

We deal with the problem of streaming multiple video streams between pairs of nodes in a multi-hop wireless ad hoc network. The nodes are static, know their locations, and are synchronized (via GPS). We introduce a new interference model that uses variable interference radiuses. We present an algorithm for computing a frequency assignment and a schedule whose goal is to maximize throughput over all the video streams. In addition, we developed a localized flow-control mechanism to stabilize the queue lengths. We simulated traffic scheduled by the algorithm using OMNET++/MixiM (i.e., physical SINR interference model with 802.11g) to test whether the computed throughput is achieved. The results of the simulation show that the computed solution is \SINR-feasible and achieves predictable stable throughputs.