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Scaling limits for Erlang-B-like systems with space priority

Koen De Turck (UGent) , Osama Salama (UGent) , Herwig Bruneel (UGent) , Dieter Fiems (UGent) and Sabine Wittevrongel (UGent)
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Abstract
We consider models in which there are n channels over which two types of users can send information: primary and secondary users. Primary users have absolute priority over secondary users and can kick out the latter from a channel they are occupying (a phenomenon we call space priority). Moreover, secondary users must actively search for a free channel, according to a certain sensing procedure. We formulate a Markov model, and - as it lacks efficient numerical solutions for large n - derive various scaling limits (fluid and diffusion). This model was inspired by cognitive radio networks, which aim to mitigate spectrum scarcity in wireless networks. The ultimate goal is to use the scaling limits to find (asymptotically) optimal sensing strategies. The low computational complexity of the approximations allows us to address research questions such as the following: how should secondary users choose between low-bandwidth channels that are unpopular with primary users (and have thus a low kick-out rate) and high-bandwidth but popular channels ?

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Please use this url to cite or link to this publication:

MLA
De Turck, Koen, et al. “Scaling Limits for Erlang-B-like Systems with Space Priority.” First European Conference on Queueing Theory, Abstracts, 2014, pp. 60–60.
APA
De Turck, K., Salama, O., Bruneel, H., Fiems, D., & Wittevrongel, S. (2014). Scaling limits for Erlang-B-like systems with space priority. First European Conference on Queueing Theory, Abstracts, 60–60.
Chicago author-date
De Turck, Koen, Osama Salama, Herwig Bruneel, Dieter Fiems, and Sabine Wittevrongel. 2014. “Scaling Limits for Erlang-B-like Systems with Space Priority.” In First European Conference on Queueing Theory, Abstracts, 60–60.
Chicago author-date (all authors)
De Turck, Koen, Osama Salama, Herwig Bruneel, Dieter Fiems, and Sabine Wittevrongel. 2014. “Scaling Limits for Erlang-B-like Systems with Space Priority.” In First European Conference on Queueing Theory, Abstracts, 60–60.
Vancouver
1.
De Turck K, Salama O, Bruneel H, Fiems D, Wittevrongel S. Scaling limits for Erlang-B-like systems with space priority. In: First European Conference on Queueing Theory, Abstracts. 2014. p. 60–60.
IEEE
[1]
K. De Turck, O. Salama, H. Bruneel, D. Fiems, and S. Wittevrongel, “Scaling limits for Erlang-B-like systems with space priority,” in First European Conference on Queueing Theory, Abstracts, Ghent, Belgium, 2014, pp. 60–60.
@inproceedings{6871709,
  abstract     = {{We consider models in which there are n channels over which two types of users can send information: primary and secondary users. Primary users have absolute priority over secondary users and can kick out the latter from a channel they are occupying (a phenomenon we call space priority). Moreover, secondary users must actively search for a free channel, according to a certain sensing procedure.  We formulate a Markov model, and - as it lacks efficient numerical solutions for large n - derive various scaling limits (fluid and diffusion).

This model was inspired by cognitive radio networks, which aim to mitigate spectrum scarcity in wireless networks. The ultimate goal is to use the scaling limits to find (asymptotically) optimal
sensing strategies. The low computational complexity of the
approximations allows us to address research questions such as the following: how should secondary users choose between low-bandwidth channels that are unpopular with primary users (and have thus a low kick-out rate) and high-bandwidth but popular channels ?}},
  author       = {{De Turck, Koen and Salama, Osama and Bruneel, Herwig and Fiems, Dieter and Wittevrongel, Sabine}},
  booktitle    = {{First European Conference on Queueing Theory, Abstracts}},
  isbn         = {{9789461972095}},
  language     = {{eng}},
  location     = {{Ghent, Belgium}},
  pages        = {{60--60}},
  title        = {{Scaling limits for Erlang-B-like systems with space priority}},
  year         = {{2014}},
}