Managing TCP Connections in Dynamic Spectrum Access Based Wireless LANs

Kumar, Ashwini; Shin, Kang G.

doi:10.1109/secon.2010.5508289

Cited by 13 publications

(7 citation statements)

References 16 publications

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“…Managing TCP in DSA-based WLANs Proposes a framework known as DSASync for improved end-to-end TCP performance in dynamic spectrum access (DSA) wireless networks. [203] Handover between IEEE 802.11b and overlay networks…”

Section: Modern Network Architectural Trends and Wireless Qosmentioning

confidence: 99%

“…Although some work has been done in the design of QoSaware cognitive routing [233] [234] and cognitive transport layer protocols [203] [235] for CWNs, more work needs to be done to realize the considerable promise of using AIand machine learning-based techniques for developing IEEE 802.11-based wireless networks that can provide high QoS and QoE.…”

Section: Cognitive Wireless Networking and Qos-awarenessmentioning

confidence: 99%

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QoS in IEEE 802.11-based wireless networks: A contemporary review

Malik

Qadir

Ahmad

et al. 2015

Journal of Network and Computer Applications

111

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Abstract-Apart from mobile cellular networks, IEEE 802.11-based wireless local area networks (WLANs) represent the most widely deployed wireless networking technology. With the migration of critical applications onto data networks, and the emergence of multimedia applications such as digital audio/video and multimedia games, the success of IEEE 802.11 depends critically on its ability to provide quality of service (QoS). A lot of research has focused on equipping IEEE 802.11 WLANs with features to support QoS. In this survey, we provide an overview of these techniques. We discuss the QoS features incorporated by the IEEE 802.11 standard at both physical (PHY) and media access control (MAC) layers, as well as other higher-layer proposals. We also focus on how the new architectural developments of softwaredefined networking (SDN) and cloud networking can be used to facilitate QoS provisioning in IEEE 802.11-based networks. We conclude this paper by identifying some open research issues for future consideration.

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Section: Modern Network Architectural Trends and Wireless Qosmentioning

confidence: 99%

Section: Cognitive Wireless Networking and Qos-awarenessmentioning

confidence: 99%

QoS in IEEE 802.11-based wireless networks: A contemporary review

Malik

Qadir

Ahmad

et al. 2015

Journal of Network and Computer Applications

111

View full text Add to dashboard Cite

show abstract

“…Application-awareness framework for DSA MAC design has been proposed in [22] highlighting the benefits of a crosslayer approach with DSA MAC. Cross-layer with DSA MAC has also been exploited to improve TCP performance in [23]. Instead of proposing a new DSA MAC, we modify the existing 802.11 MAC to design and implement our DSA coexistence scheme.…”

Section: Related Workmentioning

confidence: 99%

On time-domain coexistence of unlicensed and licensed spectrum users

Kumar

Shin

Choi

et al. 2012

2012 IEEE International Symposium on Dynamic Spectrum Access Networks

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Abstract-This paper aims to exploit spectrum white spaces in time-domain via the Dynamic Spectrum Access (DSA) technology. DSA relies on opportunistic access of licensed spectrum by unlicensed devices. Any "unlicensed-with-licensed" coexistence must ensure "safe" (i.e., un-interfered) communications for the incumbents, while achieving high spectrum-use efficiency for the secondary users. We propose a novel and comprehensive metric called the Coexistence Goodness Factor (CGF) to accurately model the inherent tradeoff between incumbent safety and unlicensed access efficiency for time-domain DSA-based coexistence. To optimize the coexistence performance, we propose a generic, online, dual-mode DSA coexistence protocol. The unlicensed devices attempt to estimate incumbent behavior patterns, and enter the Aggressive Mode (AM) once such a pattern is found, while they stay in the Safe Mode (SM) otherwise. For low-overhead and reliable estimation of incumbent spectrum-usage patterns, we propose algorithms based on Approximate Entropy (ApEn). Further, we design Spectrum-Conscious WiFi (SpeCWiFi), which provisions the proposed DSA coexistence scheme to the base 802.11 MAC. We conduct an extensive experimental evaluation of SpeCWiFi using a MadWifi-based prototype implementation in conjunction with 802.11 wireless cards. The evaluation shows that SpeCWiFi achieves excellent time-domain DSA coexistence in the presence of different types of licensed spectrum, including fast-varying channels that feature short-duration white spaces.

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“…We next elaborate on the main causes for the observed problem, and also present experimental proof confirming the same. While [30,31] also discuss some of these DSA's sideeffects, their investigation is limited to transport layer rather than application QoS which is of focus here.…”

Section: Motivationmentioning

confidence: 99%

“…A new transport protocol, called TP-CRAHN, has been proposed in [31] to address TCP performance issues when DSA is deployed. Transport layer impact of DSA is also studied in [30] in context of end-to-end connections. Traffic load has been used as the key metric in designing adaptive spectrum management schemes in [57] and [58].…”

Section: Related Workmentioning

confidence: 99%