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Quality of service (QoS) of voice over MAC protocol 802.11 using ns-2

Published: 31 October 2008 Publication History

Abstract

Transmitting voice through IP data network can provide significant cost savings. However if not managed properly, voice quality can degrade due to data network congestion. Voice over IP (VoIP) is gaining an ever increasing popularity. As such, it nowadays represents one of the most studied test applications in the performance evaluation of wireline and wireless networks in which the IEEE 802.11 distributed coordination function protocol or enhanced DCF protocol is used. However, since both DCF and EDCF are contention-based medium access control protocols, it is difficult for them to support the strict QoS requirement for VoIP.
In this paper we will investigate QoS indications (for voice packets), Improvement of NS2 network simulator in order to simulate statistical QoS in 802.11 MAC and Show that Uplink/Downlink problem exists in EDCF and suggest different solutions using QoS parameters (DIFS, CWmin and PF).

References

[1]
S. Shin, and H. Schulzrinne. Experimental measurement of the capacity for VoIP traffic in IEEE 802.11 WLANs. Proc. IEEE INFOCOM 2007, Anchorage, USA, May 6-12.
[2]
Skype, http://www.skype.com, continuously updated
[3]
H. Wu, K. Tan, Y. Zhang, and Q. Zhang. Proactive scan: Fast handoff with smart triggers for 802.11 wireless LAN Proc. IEEE INFOCOM 2007, Anchorage, USA, May 6-12
[4]
http://info.iet.unipi.it/~cng/ns2voip/
[5]
http://nsnam.isi.edu/nsnam/
[6]
http://www.nsnam.org/
[7]
IEEE 802.11e Wireless LAN for Quality of Service
[8]
Reuven Cohen, Liran Katzir (Technion, Israel). Scheduling of Voice Packets in a Low-Bandwidth Shared Medium Access Network
[9]
Vasilios A. Siris. Achieving Service Differentiation and High Utilization in 802.11
[10]
Dongyan Chen, Sachin Garg, Martin Kappes and Kishor S.Trivedi. Supporting VBR VoIP Traffic in IEEE 802.11 WLAN in PCF Mode
[11]
Dongyan Chen, Sachin Garg, Martin Kappes and Kishor S. Trivedi. Supporting VoIP Traffic in IEEE 802.11 WLAN with Enhanced MAC for QoS.
[12]
http://www.cs.technion.ac.il/Courses/Computer-Networks-Lab/projects/winter2004/voip2/
[13]
IEEE 802.11E ENHANCEMENT FOR VOICE SERVICE

Cited By

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  • (2021)Geographical and Topology Control-Based Opportunistic Routing for Ad Hoc NetworksIEEE Sensors Journal10.1109/JSEN.2021.304951921:6(8691-8704)Online publication date: 15-Mar-2021
  • (2021)Improved Reliability of Voice over Internet Protocol(VoIP) using Machine LearningIOP Conference Series: Materials Science and Engineering10.1088/1757-899X/1020/1/0120251020(012025)Online publication date: 16-Jan-2021
  • (2015)Interference-Based Topology Control Algorithm for Delay-Constrained Mobile Ad Hoc NetworksIEEE Transactions on Mobile Computing10.1109/TMC.2014.233196614:4(742-754)Online publication date: 1-Apr-2015

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  1. Quality of service (QoS) of voice over MAC protocol 802.11 using ns-2

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    cover image ACM Conferences
    CommunicabilityMS '08: Proceedings of the 1st ACM international workshop on Communicability design and evaluation in cultural and ecological multimedia system
    October 2008
    52 pages
    ISBN:9781605583198
    DOI:10.1145/1462039
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Publication History

    Published: 31 October 2008

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    Author Tags

    1. ieee 802.11
    2. mac protocol
    3. ns-2
    4. qos
    5. voip

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    MM08: ACM Multimedia Conference 2008
    October 31, 2008
    British Columbia, Vancouver, Canada

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    CommunicabilityMS '08 Paper Acceptance Rate 6 of 7 submissions, 86%;
    Overall Acceptance Rate 6 of 7 submissions, 86%

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    Cited By

    View all
    • (2021)Geographical and Topology Control-Based Opportunistic Routing for Ad Hoc NetworksIEEE Sensors Journal10.1109/JSEN.2021.304951921:6(8691-8704)Online publication date: 15-Mar-2021
    • (2021)Improved Reliability of Voice over Internet Protocol(VoIP) using Machine LearningIOP Conference Series: Materials Science and Engineering10.1088/1757-899X/1020/1/0120251020(012025)Online publication date: 16-Jan-2021
    • (2015)Interference-Based Topology Control Algorithm for Delay-Constrained Mobile Ad Hoc NetworksIEEE Transactions on Mobile Computing10.1109/TMC.2014.233196614:4(742-754)Online publication date: 1-Apr-2015

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