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Integrating an Effective VoIP Service in a USRP/GNU Radio Testbed

Authors:
Naceur Malouch

Keywords: Cognitive Radio Networks; VoIP; USRP; GNU Radio; Wireless Testbed.

Abstract:
This work presents an implementation of spectrum handoff and selection in order to experiment a Voice over IP (VoIP) application over a cognitive radio testbed. VoIP connections use both WiFi bands and GSM bands to select available channels dynamically. We use the USRP/GNU radio testbed to implement spectrum management functions and to run the experiments. We also experiment VoIP and data transfers together by implementing a satisfaction-based inter-service cohabitation strategy. Through subjective observations and objective measurements, we found that the quality of established phone calls can be maintained. Besides, VoIP can benefit from the flexibility of data transfers to perform handoffs more adequately. In the same time, data transfer is able to sustain its required average rate with minimum degradations.

Pages: 90 to 95

Copyright: Copyright (c) IARIA, 2015

Publication date: June 21, 2015

Published in: conference

ISSN: 2308-4030

ISBN: 978-1-61208-411-4

Location: Brussels, Belgium

Dates: from June 21, 2015 to June 26, 2015