A Simple End-to-End Throughput Model for 802.11 Multi-Radio Multi-Rate Wireless Mesh Networks

Siris, Vasilios A.; Stamatakis, George; Τράγος, Ηλίας

doi:10.1109/lcomm.2011.040711.110296

Cited by 15 publications

(13 citation statements)

References 10 publications

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“…A key requirement in such an investigation is the development of a simple and accurate model for estimating the end-to-end throughput, while capturing contention asymmetries [26]; initial work in developing such a simple end-to-end throughput model is presented in [24]. Also interesting is to investigate how technologies such as 802.11n, which exploits channel bonding to increase the wireless bandwidth, and cognitive radio, which allows opportunistic access of the wireless spectrum, influence the incentives for cooperation and the corresponding performance gains.…”

Section: Discussionmentioning

confidence: 99%

“…If the flows have a different sending rate, then the extension is more detailed and an iterative procedure such as the one described in [24] applied to the case of single hop flows can be used.…”

Section: Nonsturated Traffic Conditionsmentioning

confidence: 99%

“…Access point AP 1 estimates the rate at which nodes in N x 0 can associate with it, by measuring the received signal strength and inferring the corresponding transmission rate; The minimum signal strength to achieve transmission rate 6,9,12,18,24,36,48,54 Mbps is considered to be À88; À87, À85; À84; À83; À80; À76; À71 dBm, respectively. Errors are modeled by assuming that the measured signal strength follows a normal distribution, with an average equal to the above minimum signal strength for the corresponding transmission rate, and different values of the standard deviation.…”

Section: Estimation Errormentioning

confidence: 99%

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Handover Incentives for Self-Interested WLANs with Overlapping Coverage

Fafoutis¹,

Siris

2012

IEEE Trans. on Mobile Comput.

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Abstract-We consider an environment where self-interested IEEE 802.11 Wireless Local Area Networks (WLANs) have overlapping coverage, and investigate the incentives that can trigger handovers between the WLANs. Our focus is on the incentives for supporting handovers due solely to the improved performance for all wireless networks. Such incentives arise due to a wellknown property of 802.11 networks, where low rate users that send traffic significantly degrade the performance of high rate users that are associated with the same access point. A key difference of this paper compared to other works is that WLANs are selfinterested, seeking to improve the performance of their own clients. We develop a comprehensive analytical model for accurately identifying and quantifying the handover gains. The model captures cases such as uplink and downlink traffic, wired link capacity constraints, and nonsaturated traffic conditions, and yields a practical handover decision policy. Simulations and experiments on a real testbed verify the accuracy of the model, and indicate that significant gains can be achieved through performance-induced handover incentives.

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Section: Discussionmentioning

confidence: 99%

Section: Nonsturated Traffic Conditionsmentioning

confidence: 99%

Section: Estimation Errormentioning

confidence: 99%

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Handover Incentives for Self-Interested WLANs with Overlapping Coverage

Fafoutis¹,

Siris

2012

IEEE Trans. on Mobile Comput.

Self Cite

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“…MICR sensing to achieve the requested demands in the most energy efficient way is an appealing solution since wireless transmissions can be abundant in a dense network. Hence avoiding unnecessary interfering transmissions can minimize collisions the and keep a high throughput, [3], [5], [6]. Since the majority of wireless interfaces on UEs have predefined spectrum bands for communication, restricted by standardization and regulatory authorities, the network intra-interference contamination can be limited by switching between interfaces (IF) with different attributes, such as output power, channel bandwidth, modulation schemes, etc.…”

Section: Cr Solution Proposalmentioning

confidence: 99%

Energy aware rate selection in Cognitive radio inspired wireless smart objects

Lundgren

Helgesson

Angelakis

et al. 2014

2014 IEEE Symposium on Computers and Communications (ISCC)

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The spectrum overcrowding drives investigating solutions to increase the usage of underutilized spectrum bands, minimize redundant interference and maximize expected throughput. Cognitive radio (CR) has presented itself as an appealing technology for solutions in energy constrained devices. Within this context, this paper introduces a system structure which enhances wireless multi-interfaced objects with cognitive radio. We propose a modular architecture to imbue such multiinterfaced devices with cognitive radio features, and based on it we present numerical results which identify performance boundaries and potential energy savings for an adaptive uncoded modulation scheme. Our results show that the tradeoff between throughput and energy consumption can be leveraged satisfactorily to enhance the lifetime significantly in noisy environments.

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“…In this category, we compare them with the well‐known multichannel protocols, identical channel assignment (ICA) and Hyacinth , which do not deal with performance anomaly, to investigate the effect of performance anomaly mitigation by RB‐CA and CoCA. Also, we consider some other works proposed for multiradio multihop wireless networks .…”

Section: Multichannel Protocols For Performance Anomaly Mitigationmentioning

confidence: 99%

A survey and comparison of multichannel protocols for performance anomaly mitigation in IEEE 802.11wireless networks

Kim

Suh

2012

Int J Communication

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SUMMARYProviding multichannel functionality can improve the performance of wireless networks. Although off‐the‐shelf IEEE 802.11 physical layer and medium access control specifications support multiple channels and multiple data rates, one of the major challenges is how to efficiently utilize available channels and data rates to improve network performance. In multirate networks, low‐rate links severely degrade the capacity of high‐rate links, which is known as performance anomaly. To overcome the performance anomaly problem, different data rate links can get equal air‐time by exploiting time diversity and frequency diversity, or they can be separated over nonoverlapping channels. In this paper, we study existing multichannel protocols proposed to mitigate the performance anomaly problem by classifying them into single‐radio protocols, multiradio single‐hop protocols, and multiradio multihop protocols. To investigate the effectiveness of multichannel solutions for performance anomaly, we compare these protocols with well‐known multichannel protocols that do not consider performance anomaly. In addition, this paper gives insightful research issues to design multichannel protocols that mitigate performance anomaly in IEEE 802.11 wireless networks. Copyright © 2012 John Wiley & Sons, Ltd.

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A Simple End-to-End Throughput Model for 802.11 Multi-Radio Multi-Rate Wireless Mesh Networks

Cited by 15 publications

References 10 publications

Handover Incentives for Self-Interested WLANs with Overlapping Coverage

Handover Incentives for Self-Interested WLANs with Overlapping Coverage

Energy aware rate selection in Cognitive radio inspired wireless smart objects

A survey and comparison of multichannel protocols for performance anomaly mitigation in IEEE 802.11wireless networks

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