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Jitter-buffer management for VoIP over wireless LAN in a limited resource device

Baratvand, M ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1109/ICNS.2008.17
  3. Publisher: 2008
  4. Abstract:
  5. VoIP over WLAN is a promising technology as a powerful replacement for current local wireless telephony systems. Packet timing Jitter is a constant issue in QoS of IEEE802.11 networks and exploiting an optimum jitter handling algorithm is an essential part of any VoIP over WLAN (VoWiFi) devices especially for the low cost devices with limited resources. In this paper two common algorithms using buffer as a method for Jitter handling are analyzed with relation to different traffic patterns. The effect of different buffer sizes on the quality of voice will be assessed for these patterns. Various traffic patterns were generated using OPNET and Quality of output voice was evaluated based on ITU PESQ method. It was shown that an optimum voice quality can be attained using a circular buffer with a size of around twice that of a voice packet. © 2008 IEEE
  6. Keywords:
  7. Internet telephony ; Local area networks ; Telephone systems ; Timing jitter ; Voice/data communication systems ; Wireless local area networks (WLAN) ; Buffer management ; Buffer sizes ; Circular buffer ; Circular buffers ; IEEE 802.11 ; International conferences ; Jitter management ; Limited resources ; Low-cost devices ; Multi buffer ; OPNET simulation ; PESQ method ; Quality of service ; Timing jitters ; Traffic patterns ; Voice over IP ; Voice quality ; VoIP over WLAN ; Wireless LAN ; Wireless telephony ; Jitter
  8. Source: 4th International Conference on Networking and Services, ICNS 2008, Gosier, 16 March 2008 through 21 March 2008 ; 2008 , Pages 90-95 ; 076953094X (ISBN); 9780769530949 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/4476541