Performance Evaluation and Delay Modelling of VoIP Traffic over 802.11 Wireless Mesh Network

Chhabra, Amit; Singh, Gurpal

doi:10.5120/2542-3481

Cited by 7 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…End-to-end delay consists of endsystem and network delay. The end-system delay occurs due to the encoding and decoding delay and dejitter buffering delay [10]. Figure 7 shows that the end-to-end delay values are too advantageous in the closer users compared to the heterogeneous scenario with SIP/H.323 distant users.…”

Section: End-to-endmentioning

confidence: 99%

“…A jitter of less than 50 ms is acceptable for high quality VoIP calls. If the delay of transmissions varies too widely in a VoIP call, the call quality is greatly degraded [10].…”

Section: Jittermentioning

confidence: 99%

“…These include various transmitters and receivers allowing a node to be attached to communication links in the network domain. Other modules, called processors and queues, are highly programmable, with their behavior being prescribed by an assigned process model [9].…”

Section: Node Modelmentioning

confidence: 99%

See 2 more Smart Citations

A New Wireless VoIP Signaling Device Supporting SIP and H.323 Protocols

Rattal

Badri

Moughit

2014

Journal of Computer Networks and Communications

View full text Add to dashboard Cite

Nowadays, VoIP is a technology with a great demand and wireless networks are increasingly deployed. Each of these has its own technology constraints. For VoIP, it is very important to take into consideration the need to provide a high quality service according to well-defined standard transmission (jitter, end-to-end delay, MOS, and packet loss). However, wireless networks (IEEE 802.11) are based on radio which undergoes a number of technical constraints to achieve theoretical transmission rates; among these constraints the number of users of the networks, the distance between the client and the access, and the amount of data transmitted point are included. In this term, a study is made by simulating wireless network in OPNET Modeler with a fairly large number of VoIPs (15 users) whose signaling is handled via a new node that was created specifically to manage the signaling tasks under SIP and H.323 in order to minimize the number of nodes in the network and avoid the congestion. In this paper, two scenarios are compared; the first contains a number of VoIP users with SIP and H.323 signaling handled by the new created device; the second scenario is similar to the first except that the distance between the stations is remarkably lower.

show abstract

Section: End-to-endmentioning

confidence: 99%

“…A jitter of less than 50 ms is acceptable for high quality VoIP calls. If the delay of transmissions varies too widely in a VoIP call, the call quality is greatly degraded [10].…”

Section: Jittermentioning

confidence: 99%