Improving end-to-end quality of services in 3G wireless networks by wireless early regulation of real-time flows

TitleImproving end-to-end quality of services in 3G wireless networks by wireless early regulation of real-time flows
Publication TypeConference Paper
Year of Publication2003
AuthorsChen, J., and V. C. M. Leung
Conference NamePersonal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on
Pagination2333 - 2337 vol.3
Date Publishedsep.
Keywords3G mobile communication, 3G wireless network, active queue management traffic flow, backlog, congested flow, downlink packet, early regulation-unresponsive flow, end-to-end quality of service, General Packet Radio Service, GPRS, link layer queue, link layer retransmission, packet radio networks, quality of service, queueing theory, radio link control layer, radio links, real-time packet, shared network resource, telecommunication congestion control, telecommunication traffic, UMTS core network, universal mobile telecommunication service, wireless channel, wireless early regulation-real-time flow

In this paper, we propose to adapt the early regulation of unresponsive flows (ERUF) to third generation wireless networks employing link layer retransmissions. Wireless channel degradations may result in backlog of downlink packets at the link layer queue, causing real-time packets with hard delivery deadlines to expire and be dropped at the receiver. We propose to regulate these congested flows by dropping expiring packets at the ingress edge node of the general packet radio service (GPRS)/universal mobile telecommunication services (UMTS) core network to release shared network resources for other flows. Based on an analysis of the characteristics of the radio link control (RLC) layer of the GPRS/UMTS network, we develop a new set of mechanisms based on active queue management to achieve this goal. We present simulation results to show that this new wireless early regulation of unresponsive flows (WERUF) scheme can significantly improve the overall end-to-end quality-of-service of all traffic flows.


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