Performance evaluation of VoIP over 3G-WLAN interworking system

In this paper, we present the experimental measurements of real-time voice packets over a 3G-WLAN interworking system. It is of interest to evaluate: (i) the performance of VoIP with an IPSec tunnel in a 3G-WLAN interworking system; (ii) maximum number of VoIP connections in a single 802.11b access...

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Bibliographic Details
Main Authors: Rajavelsamy, R., Jeedigunta, V., Holur, B., Choudhary, M., Song, O.
Format: Conference Proceeding
Language:English
Subjects:
Costs
Degradation
Delay
Internet telephony
Real time systems
Service oriented architecture
Software measurement
Telecommunication traffic
Ubiquitous computing
Wireless LAN
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Summary:In this paper, we present the experimental measurements of real-time voice packets over a 3G-WLAN interworking system. It is of interest to evaluate: (i) the performance of VoIP with an IPSec tunnel in a 3G-WLAN interworking system; (ii) maximum number of VoIP connections in a single 802.11b access point (AP); (iii) handoff latency due to terminal mobility; and (iv) impact of terminal mobility on the VoIP performance. Our results show that the performance can degrade significantly with an increase of VoIP connections and with the terminal mobility. Furthermore, the performance degradation affects all the existing VoIP connections, not merely the new connection or the user equipment which undergoes mobility. The amount of delay during terminal movement severely affects the performance of all realtime applications in that particular AP.
ISSN:1525-3511
1558-2612
DOI:10.1109/WCNC.2005.1424876