Search results for: sieci vanet

• Providing Differentiated Levels of Service Availability in VANET Communications

  Publication

  • J. Rak

  - IEEE COMMUNICATIONS LETTERS - Year 2013

  Inter-vehicle communications seems to be a promising remedy not only for a number of road-safety issues, but also to improve the efficiency of road traffic, as well as to support the on-board infotainment applications. However, it often encounters disruptions due to high mobility of vehicles causing frequent failures of communication links. In this paper, we utilize the idea of multipath vehicle-to-vehicle routing to provide protection...

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• Jacek Rak dr hab. inż.

  People

  Department of Computer Communications

  Jacek Rak uzyskał stopień doktora habilitowanego nauk technicznych w dyscyplinie telekomunikacji (specjalność: teleinformatyka) w 2016 r., a stopień doktora nauk technicznych w dyscyplinie informatyka w 2009 r. Obecnie jest pracownikiem naukowo-dydaktycznym Katedry Teleinformatyki Wydziału Elektroniki, Telekomunikacji i Informatyki Politechniki Gdańskiej. Jego działalność naukowa koncentruje się w obszarze doboru tras, projektowania...

• Studia Sieci Uniwersytetow Pogranicza

  Journals

  ISSN: 2544-5790

• A Novel Reliable Routing Scheme for VANETs

  Publication

  • J. Rak
  • A. Vinel

  - Year 2012

  Sieci bezprzewodowej transmisji informacji bazujące na rodzinie standardów 802.11, zastosowane w przypadku komunikacji między pojazdami (VANET), mogą istotnie przyczynić się do poprawy bezpieczeństwa ruchu drogowego. Z uwagi na wysoki stopień mobilności pojazdów, dobór tras w sieciach VANET jest problemem trudnym, zwłaszcza w przypadku transmisji wieloskokowej. Rozwiązania dostępne w literaturze ukierunkowane na poprawę dostępności...

• A taxonomy of challenges to resilient message dissemination in VANETs

  Publication

  • J. Rak
  • M. Jonsson
  • A. Vinel

  - Year 2016

  Inter-vehicular communications is seen as a promising solution to a number of issues related with public road safety, road congestion management, and infotainment. However, Vehicular Ad-hoc NETworks (VANETs) characterized by high mobility of vehicles and facing a number of other issues related with high frequency wireless communications and network disconnections, encounter major challenges related with reliability of message delivery....

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• How to provide fair service for V2I communications in VANETs?

  Publication

  • M. Hoeft
  • J. Rak

  - Ad Hoc Networks - Year 2016

  In this paper, we focus on fairness issues of Vehicle-to-Infrastructure (V2I) communications. In particular, we show that under a common technique of selection of RSUs by OBUs based on the received signal strength, a vast variability of a number of OBUs connected to RSUs can be observed leading to inefficient/unfair service provided by RSUs. To overcome this problem, we propose an algorithm for RSU selection called RSEL to obtain...

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• Volute scroll as an alternative to guide vanes at inlet to turbine.

  Publication

  • R. Puzyrewski
  • R. Biernacki

  - Transactions of the Institute of Fluid-Flow Machinery - Year 2003

  W pracy przedstawiono alternatywny sposób zasilania turbin parowych poprzez zastosowanie podwójnej spirali zasilającej. Przedstawiono model jednowymiarowy obliczania przepływu przez spirale oraz zamieszczono wyniki obliczeń typu 3D. Pokazano jak zależy parametr nierównomierności rozkładu prędkości na wylocie od sposobu kształtowania przekroju spiral.

• Design of Resilient Vehicle-to-Infrastructure Systems

  Publication

  • J. Rak
  • M. Jonsson
  • A. Vinel
  • K. Jurczenia

  - Year 2020

  Vehicular ad hoc networks (VANETs) have recently gained noticeable attention due to advantages in improving road traffic safety, shaping the road traffic and providing infotainment opportunities to travellers. However, transmission characteristics following from the IEEE 802.11p standard and the high mobility of VANET nodes remarkably reduce the lifetime, reach and capacity of wireless links, and often lead to simultaneous disruptions...

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• DST-Based Detection of Non-cooperative Forwarding Behavior of MANET and WSN Nodes

  Publication

  • J. Konorski
  • R. Orlikowski

  - Year 2009

  . Selfish node behavior can diminish the reliability of a mobile ad hoc network (MANET) or a wireless sensor network (WSN). Efficient detection of such behavior is therefore essential. One approach is to construct a reputation scheme, which has network nodes determine and share reputation values associated with each node; these values can next be used as input to a routing algorithm to avoid end-to-end routes containing ill-reputed...

• LLA : A New Anypath Routing Scheme Providing Long Path Lifetime in VANETs

  Publication

  • J. Rak

  - IEEE COMMUNICATIONS LETTERS - Year 2014

  Vehicular ad-hoc networks (VANETs) are a promising solution to improve the road traffic safety, reduce the environmental pollution, or simply provide the on-board infotainment services. However, these actions are often not possible due to high mobility of vehicles causing frequent failures of VANET links. In this paper, we focus on anypath routing to improve the reliability of multihop VANET communications. In particular, the paper...

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