Overhaul of ieee 802.11 modeling and simulation in ns-2

Chen, Qi; Schmidt-Eisenlohr, Felix; Jiang, Daniel R.; Torrent-Moreno, Marc; Delgrossi, Luca; Hartenstein, Hannes

doi:10.1145/1298126.1298155

Cited by 334 publications

(180 citation statements)

References 7 publications

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“…We also employed the new IEEE 802.11 MAC and physical layer extensions implemented by Chen et al [7], which model the noise floor, physical layer header, transmission and processing of preamble of each packet, and capture effects accurately. In our simulation, all stations are placed uniformly within a distance of 250 meter around an AP.…”

Section: Simulation Methodologymentioning

confidence: 99%

On Maximizing VoIP Capacity and Energy Conservation in Multi-Rate WLANs

Chin

2010

IEEE Commun. Lett.

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This letter highlights a key problem that arises when frame aggregation, a popular method for boosting VoIP capacity, is used in Wireless Local Area Networks (WLANs) that employ asynchronous power save mode (PSM). Specifically, it shows how the PSM proposed by the Wi-Fi Alliance renders frame aggregation ineffective. It then proposes a novel opportunistic scheduler that restores the benefits of frame aggregation whilst ensuring stations have minimal energy expenditure. Keywords era2015 Disciplines Physical Sciences and MathematicsPublication Details K. Chin, "On maximizing VoIP capacity and energy conservation in multi-rate WLANs," IEEE Communications Letters, vol. 14, (7)

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Section: Simulation Methodologymentioning

confidence: 99%

On Maximizing VoIP Capacity and Energy Conservation in Multi-Rate WLANs

Chin

2010

IEEE Commun. Lett.

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“…A similar approach to [8] has been proposed and extended by [9] and [10] in order to address frame capture capabilities and to distinguish between frame preamble/header and body in both NS-2 or QualNet [2]. With frame capture it is possible to account for advanced receiver technologies which provide the ability to synchronize to a new incoming frame even if a different frame is already being decoded.…”

Section: Related Workmentioning

confidence: 99%

Bridging the Gap between Physical Layer Emulation and Network Simulation

Papanastasiou

Mittag²,

Ström

et al. 2010

2010 IEEE Wireless Communication and Networking Conference

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Abstract-Many of the simulations reported in wireless networking literature contain several abstractions at the physical layer and the corresponding channel models. In particular, the basic simulation unit assumed in such simulations is the frame (or packet), which omits considerations of the signal processing details at the physical layer, such as frame construction and reception. Due to this abstraction, available channel models for network simulators are applied to frames as a whole and cannot reflect properly the effects of fast fading or frequencyselective channels. Moreover, it is not possible to study the mechanisms of the physical layer and their impact on higher layers such as the MAC. Therefore, we propose to address the lack of accurate physical layer representation in modern network simulators by incorporating a physical layer emulator for OFDM-based IEEE 802.11 communications into the popular NS-3 simulator. In this paper, we outline the architecture of the physical layer emulator and present initial results which highlight the promise of the new architecture in providing more detailed simulations to the networking community. The additional memory and computational requirements of the new model are also discussed.

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“…In our experience, however, the real impact of an attack cannot be judged on this basis. This is due to the fact that many implementations behave not 100 percent standard compliant and that simulations often simplify real-world behavior of wireless systems, especially of many MAC mechanisms [30].…”

Section: E Current State Of the Artmentioning

confidence: 99%

Channel switch and quiet attack: New DoS attacks exploiting the 802.11 standard

Könings

Schaub

Kargl

et al. 2009

2009 IEEE 34th Conference on Local Computer Networks

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Abstract-Network communication using unprotected air as a medium leads to unique challenges ensuring confidentiality, integrity and availability. While newer amendments of IEEE 802.11 provide acceptable confidentiality and integrity, availability is still questionable despite broad usage of Wi-Fi technologies for tasks where availability is critical. We will present new security weaknesses that we have identified in the 802.11 standard and especially the 802.11h amendment. Our results are underlined by an extensive analysis of attacks addressing the quiet information element and channel switch announcement in management frames. For some stations a complete DoS effect can be achieved with a single packet for more than one minute. This shows that the newly identified attacks are more efficient than earlier approaches like a deauthentication attack. Tests were performed with a large variety of network interface cards, mobile devices, and operating systems.

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Overhaul of ieee 802.11 modeling and simulation in ns-2

Cited by 334 publications

References 7 publications

On Maximizing VoIP Capacity and Energy Conservation in Multi-Rate WLANs

On Maximizing VoIP Capacity and Energy Conservation in Multi-Rate WLANs

Bridging the Gap between Physical Layer Emulation and Network Simulation

Channel switch and quiet attack: New DoS attacks exploiting the 802.11 standard

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