UDS: A Distributed RAT Selection Mechanism for Heterogeneous Wireless Networks

  • Authors:
  • Ioannis Modeas;Alexandros Kaloxylos;Lazaros Merakos

  • Affiliations:
  • Department of Informatics and Telecommunications, University of Athens, Athens, Greece;Department of Telecommunications Science and Technology, University of Peloponnese, Tripoli, Greece;Department of Informatics and Telecommunications, University of Athens, Athens, Greece

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2014

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Abstract

The selection of the most suitable radio access technology to serve as the communication means for a service in a heterogeneous wireless access network is a complex task. It considers a number of different parameters and it involves numerous network technologies and entities. Several mechanisms have been proposed that focus on different aspects and follow different strategies. We introduce a policy based scheme that takes into consideration the user preferences, along with network conditions and user moving speed. Its ultimate goal is to support a session through the most desirable radio access technology, from the user perspective, while managing the overall network resources in an optimum way. It comprises a distributed algorithm running at the terminal and the network side. The performance of the proposed mechanism is evaluated against that of a typical load balancing scheme, commonly used in the literature. The results show that the holistic treatment of the diverse parameters fulfils the aforementioned goal.