A joint routing-MAC model for cellular-relaying networks

Timus, Bogdan; Soldati, Pablo

doi:10.1109/pimrc.2008.4699627

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…The communication system model considered in this work are based on the fluid-flow data traffic model for wireless sensor networks developed in [11] and [12]. Here we consider a WNCS with N nodes (sensors, controller, actuator, relays) connected to their destinations through R routes as in Fig.…”

Section: Communication System Modelingmentioning

confidence: 99%

Joint Design of Control and Communication in Wireless Networked Control SystemsGemeinsamer Entwurf von Regelung und Kommunikation für funkbasierte Regelungssysteme

Chamaken¹,

Litz

2010

At - Automatisierungstechnik

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The control performance of a wireless networked control system is a complex function of control structure, control system parameters e. g. sampling period, controller gain and communication system structure and parameters e. g. random delay, packet loss. Further limitations may arise from low energy low performance computing nodes. In order to predict or even optimize the control performance, a joint design of both the control system with appropriate control structures and the communication system with appropriate communication protocols is intended. In this contribution a wireless networked control system where sensors, controller, and actuator communicate over a dedicated wireless network is analyzed and implemented. It is shown how to use different controllers in conjunction with dedicated communication protocols to stabilize an inverted pendulum equipped with low power low energy wireless nodes. Experimental results are provided to show the effectiveness of the method. Zusammenfassung Die Güte eines funkbasierten Regelungssystems ist eine komplexe Funktion von Reglerstruktur und Reglerparametern wie Abtastzeit, Reglerverstärkung und Kommunikationsstruktur und Kommunikationsparametern wie Paketverzögerung und Paketverlusten. Durch den gemeinsamen Entwurf von Regelungssystem mit passenden Reglerstrukturen und Kommunikationssystem mit passenden Kommunikationsprotokollen kann eine bessere Vorhersagbarkeit bis hin zu einer Optimierung der Regelgüte erzielt werden. In diesem Beitrag wird ein funkbasiertes Regelungssystem entworfen und implementiert, wobei Sensoren, Regler, und Aktuator über ein dediziertes Funknetzwerk kommunizieren. Wir zeigen, wie verschiedene Regelalgorithmen im Zusammenhang mit dedizierten Kommunikationsprotokollen zur Stabilisierung eines invertierten Pendels mit energiearmen Funkknoten eingesetzt werden können. Experimentelle Ergebnisse zeigen die Effektivität der Methode.

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Section: Communication System Modelingmentioning

confidence: 99%

Joint Design of Control and Communication in Wireless Networked Control SystemsGemeinsamer Entwurf von Regelung und Kommunikation für funkbasierte Regelungssysteme

Chamaken¹,

Litz

2010

At - Automatisierungstechnik

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“…The SNR is estimated for each link along a potential route, and the route with the highest (interference free) average rate is selected through exhaustive search. (See [12] for a model which includes routing into the cross layer optimization. )…”

Section: Resource Allocation Modelsmentioning

confidence: 99%

“…as decision variables. Moreover, we transform the variables θ i = log(θ i ) and S 0 = log(S 0 ) and the physical layer constraint so as to obtain an equivalent convex problem (see [12] for the proof of convexity):…”

Section: B Resource Allocation For Coveragementioning

confidence: 99%

Implications of Fairness Criteria on the Techno-Economic Viability of Relaying Networks

Timus

Soldati

Zander

2009

VTC Spring 2009 - IEEE 69th Vehicular Technology Conference

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The introduction of relaying techniques into cellular networks is expected to reduce the total infrastructure cost, especially when coverage extension is sought. With the advent of networks such as LTE, guaranteeing high data-rate coverage may become a challenge even for incumbent operators which nowadays provide full coverage for voice service. However it is not straightforward that operators will be able (or want) to guarantee coverage for the high data-rates. In this paper we study how the techno-economic viability of the relaying solution depends on the type of service to be provided by the operator. We exemplify the trade off between coverage and system throughput with two fairness criteria: perfect fairness (coverage guarantee) and proportional fairness. We show that relays provide advantages when the operator is interested in providing bit-rate/QoS guarantees. When maximizing the system throughput or cell capacity, relays are of less value.

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