DocumentCode :
380691
Title :
Performance optimization of VoIP calls over wireless links using H.323 protocol
Author :
Das, Sajal K. ; Lee, Enoch ; Basu, Kalyan ; Kakani, Naveen ; Sen, Sanjoy K.
Author_Institution :
Dept. of Comput. Sci. Eng., Texas Univ., Arlington, TX, USA
Volume :
3
fYear :
2002
fDate :
2002
Firstpage :
1386
Abstract :
Intelligent mobile terminals (or users) of next generation wireless networks are expected to initiate voice over IP (VoIP) calls using session set-up protocols like H.323 or SIP (session initiation protocol). To guarantee service quality of such applications, the call set-up protocol should be robust against network impairment generated in wireless networks. In this paper, we analyze the performance of the H.323 call setup procedure over the wireless link. We used two call modes of operation for this analysis namely regular and fast connect. The proposed model assumes that a transparent radio link protocol (RLP), but without RLP retransmission, be used for VoIP packets while non-transparent (regular) RLP be used for H.323 control packets. Our analytical models prove that the VoIP call set-up performance can degrade significantly even for moderately high air-link frame error rates (FER). Furthermore, the call setup performance can be improved significantly using the robust radio link layer such as RLP with the modifications proposed in our paper. The analytical results were validated by our experimental measurements.
Keywords :
3G mobile communication; Internet telephony; error statistics; packet radio networks; protocols; quality of service; H.323 protocol; SIP; VoIP calls; air-link FER; control packets; frame error rates; next generation wireless networks; nontransparent RLP; performance optimization; service quality; session initiation protocol; transparent radio link protocol; voice over IP; wireless links; Intelligent networks; Internet telephony; Next generation networking; Optimization; Performance analysis; Radio control; Radio link; Robustness; Wireless application protocol; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
INFOCOM 2002. Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE
ISSN :
0743-166X
Print_ISBN :
0-7803-7476-2
Type :
conf
DOI :
10.1109/INFCOM.2002.1019389
Filename :
1019389
Link To Document :
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