Experimenting with real time applications in an IEEE 802.11b ad hoc network

Author

Karapantelakis, Thanasis ; Iacovidis, Giorgos

Author_Institution

Dept. of Comput. Sci., Crete Univ.

fYear

2005

fDate

17-17 Nov. 2005

Lastpage

559

Abstract

In this study we set up an ad-hoc testbed of heterogeneous devices and investigate the behavior of video and audio streaming over the TCP protocol. The metrics for measuring the quality of service (QoS) of the TCP flows, are TCP round trip time (RTT) and signal to noise ratio (SNR). Our findings indicate an inverse correlation between RTT and SNR, with the first value increasing exponentially after a lower SNR threshold. Device movement and large distances are two factors affecting RTT negatively. Finally we show that the impact of background traffic on these streaming applications is prominent, as it increases RTT significantly

Keywords

ad hoc networks; mobile radio; quality of service; transport protocols; wireless LAN; IEEE 802.11b ad hoc network; audio streaming; quality of service; round trip time; signal to noise ratio; transport control protocol; video streaming; Ad hoc networks; Computer networks; Intelligent networks; Protocols; Quality of service; Signal to noise ratio; Streaming media; Telecommunication traffic; Testing; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Local Computer Networks, 2005. 30th Anniversary. The IEEE Conference on

Conference_Location

Sydney, NSW

ISSN

0742-1303

Print_ISBN

0-7695-2421-4

Type

conf

DOI

10.1109/LCN.2005.67

Filename

1550925