Applying active queue management to link layer buffers for real-time traffic over third generation wireless networks

TitleApplying active queue management to link layer buffers for real-time traffic over third generation wireless networks
Publication TypeConference Paper
Year of Publication2003
AuthorsChen, J., and V. C. M. Leung
Conference NameWireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Pagination1657 -1662 vol.3
Date Publishedmar.
Keywords3G mobile communication, active queue management, buffer storage, delays, expired packets, link layer buffer, packet radio networks, queue length transmission, queueing theory, queuing delay, radio link control layer, radio links, real-time systems, real-time traffic, telecommunication network management, third generation wireless network, waste network resource, wireless bandwidth, wireless channels
Abstract

Wireless channels have the characteristic that the link quality varies with propagation conditions. For real-time flows with hard time deadlines, link layer retransmission over the wireless network due to fluctuations in link quality may result in many packets being dropped due to deadline expiry. The expired packets waste network resources and lead to long queuing delay for subsequent packets. In this paper, we propose to use active queue management to limit the transmission queue length and hence queuing delay, thus eliminating expiration packet drops. This allows the buffer and wireless bandwidth that would otherwise be wasted by expiring packets to be released earlier for other packets. We apply this mechanism to the radio link control layer in third generation wireless networks. The effectiveness of the proposed mechanism is verified by simulations.

URLhttp://dx.doi.org/10.1109/WCNC.2003.1200635
DOI10.1109/WCNC.2003.1200635

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