Title :
VoIP Call Capacity over Wireless Mesh Networks
Author :
Siddique, Md Atiur Rahman ; Kamruzzaman, Joarder
Author_Institution :
Fac. of IT, Monash Univ., Melbourne, VIC
Abstract :
In recent years, research on VoIP over wireless mesh network (WMN) has gained particular attention because of its commercial prospect. This paper presents an analytical method to estimate VoIP call capacity in an WMN employing IEEE 802.11 devices. We used Markov chain analysis of IEEE 802.11 for network delay and loss to estimate the capacity while using rating factor, R score, defined by ITU-T, to ensure call quality. A detailed analysis of queueing delay and loss in terms of network parameters is also carried out along with their impacts on voice quality. The capacity model estimates call capacity in a single hop WLAN and is extendable to multi hop scenario and for video communications. The theoretical results are verified by simulation and compared to related previous works.
Keywords :
Internet telephony; Markov processes; video communication; wireless LAN; IEEE 802.11 devices; Markov chain analysis; VoIP call capacity; multihop scenario; network delay; network parameters; queueing delay; single hop WLAN; video communications; wireless mesh networks; Costs; Decoding; Delay estimation; Internet; Land mobile radio cellular systems; Multiaccess communication; Phase change materials; Queueing analysis; Speech analysis; Wireless mesh networks;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.123
