On SIP session setup delay for VoIP services over correlated fading channels

Author

Fathi, Hanane ; Chakraborty, Shyam S. ; Prasad, Ramjee

Author_Institution

Center for TeleInFrastruktur, Aalborg Univ., Denmark

Volume

55

Issue

1

fYear

2006

Firstpage

286

Lastpage

295

Abstract

In this paper, the session setup delay of the session initiation protocol (SIP) is studied. The transmissions on both the forward and reverse channel are assumed to experience Markovian errors. The session setup delay is evaluated for different transport protocols, and with the use of the radio link protocol (RLP). An adaptive retransmission timer is used to optimize SIP performances. Using numerical results, we find that SIP over user datagram protocol (UDP) instead of transport control protocol (TCP) can make the session setup up to 30% shorter. Also, RLP drastically reduces the session setup delay down to 4 to 5 s, even in environments with high frame error rates (10%) and significant correlation in the fading process (f_DT=0.02). SIP is compared with its competitor H.323. SIP session setup delay with compressed messages outperforms H.323 session setup delay.

Keywords

3G mobile communication; Internet telephony; Markov processes; fading channels; radio links; signalling protocols; Markovian errors; SIP sessionsetup delay; VoIP services; adaptive retransmission timer; correlated fading channels; radio link protocol; session initiation protocol; user datagram protocol; Access protocols; Automatic repeat request; Delay; Fading; Internet telephony; Performance evaluation; Radio link; Transport protocols; Wireless application protocol; Wireless networks; Correlated fading channels; IP-based wireless networks; radio link protocol (RLP); session initiation protocol (SIP); session setup delay; transport control protocol (TCP); user datagram protocol (UDP);

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2005.861213

Filename

1583936