Queue management for TCP traffic over 3G links

Sagfors, M.; Ludwig, R.; Meyer, Max; Peisa, Janne

doi:10.1109/wcnc.2003.1200636

Cited by 37 publications

(37 citation statements)

References 9 publications

(9 reference statements)

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“…Previous works [5,9,10] provide a clear view of the characteristics of 3G wireless links. Radio bearers are expected to multiplex a number of simultaneous connections ranging from 1 to 4 TCP flows [5,11], because 3G links employs per-user buffering.…”

Section: Characteristics Of 3g Linksmentioning

confidence: 99%

“…Radio bearers are expected to multiplex a number of simultaneous connections ranging from 1 to 4 TCP flows [5,11], because 3G links employs per-user buffering. At the RLC layer, the upper layer packets will be stored in the downlink buffer until they are fully acknowledged by the receiver side.…”

Section: Characteristics Of 3g Linksmentioning

confidence: 99%

“…However, excessive queuing cause some additional problems [4,5] like Round Trip Time (RTT) inflation, unfairness between competing flows and viscous web surfing. Fig.…”

Section: Characteristics Of 3g Linksmentioning

confidence: 99%

“…A reliable RLC layer reduces packet losses perceived at TCP layer, avoiding the triggering of unnecessary congestion control measures [2,3]. However, several characteristics of 3G links like high and variable latency and buffer overflow of the downlink buffers [4,5,6], have undesired effects on TCP performance.…”

Section: Introductionmentioning

confidence: 99%

“…In order to overcome these effects, recent works [5,6] propose the application of Active Queue Management (AQM) techniques at the downlink RLC buffers. AQM can improve TCP performance over 3G links with a small change at the Radio Network Controller (RNC) nodes.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Performance Evaluation of AQM Schemes in Rate-Varying 3G Links

Alcaraz

Cerdan

2006

Personal Wireless Communications

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Abstract. When TCP is carried over 3G links, overbuffering and buffer overflow at the RLC layer degrades its performance. AQM techniques at the RLC buffer can bring noticeable enhancements to TCP performance without introducing changes in 3G specifications. We show that the optimum parameter setting of AQM algorithms in RLC buffers is strongly related to the radio bearer rate, which can be changed dynamically by control layer protocols. By means of extensive simulation experiments we propose, for each specified nominal rate, optimum configurations that keep the goodput near the maximum while the delay is reduced up to 50%. We consider two AQM schemes, an adapted RED algorithm and a novel deterministic one, SBD described in this paper. We illustrate how an automatic reconfiguration of AQM parameters avoids the degradation caused by sudden changes in the radio bearer rate.

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Section: Characteristics Of 3g Linksmentioning

confidence: 99%

Section: Characteristics Of 3g Linksmentioning

confidence: 99%

“…However, excessive queuing cause some additional problems [4,5] like Round Trip Time (RTT) inflation, unfairness between competing flows and viscous web surfing. Fig.…”

Section: Characteristics Of 3g Linksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Performance Evaluation of AQM Schemes in Rate-Varying 3G Links

Alcaraz

Cerdan

2006

Personal Wireless Communications

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References

2017

Green Mobile Networks

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Modeling and evaluation of congestion control for different classes of network traffic

Wang

Min

Awan

2007

Concurrency and Computation

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SUMMARYTraffic congestion has become a crucial problem in wireless networks due to its detrimental effects on the end-to-end Quality-of-Service (QoS) of mobile users. This issue has posed various challenges to developing effective congestion control mechanisms and devising new performance evaluation tools. Various congestion control schemes have been proposed to support differentiated QoS. Among these schemes, Active Queue Management (AQM) has been recognized as an effective mechanism to manage downlink buffers in wireless networks. Most existing studies on AQM are based on the use of averaged queue length and the related performance analysis is carried out via software simulation. This paper contributes to the development of an analytical performance model for a finite capacity queuing system subject to AQM and multiple traffic classes based on the instantaneous queue length. Expressions for the aggregated and marginal performance metrics including the mean queuing length, packet loss probability, mean waiting time, system throughput, response time, and utilization are analytically derived. The validity of this new model is demonstrated by comparing the analytical results against those obtained from simulation experiments. The analytical model is then used to investigate the effects of varying thresholds on the aggregated and marginal performance metrics under different combinations of arriving rates for multiple traffic classes.

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Queue management for TCP traffic over 3G links

Cited by 37 publications

References 9 publications

Performance Evaluation of AQM Schemes in Rate-Varying 3G Links

Performance Evaluation of AQM Schemes in Rate-Varying 3G Links

References

Modeling and evaluation of congestion control for different classes of network traffic

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