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Numerical Algebra, Control and Optimization (NACO)
 

Admission control by dynamic bandwidth reservation using road layout and bidirectional navigator in wireless multimedia networks

Pages: 627 - 638, Volume 1, Issue 4, December 2011

doi:10.3934/naco.2011.1.627       Abstract        References        Full Text (351.4K)       Related Articles

Jin Soo Park - Convergence Technology Department, Central R&D Laboratories, KT, Seoul, South Korea (email)
Kyung Jae Kim - Department of Mathematics and Telecommunication Mathematics Research Center, Korea University, Seoul, South Korea (email)
Yun Han Bae - Department of Mathematics and Telecommunication Mathematics Research Center, Korea University, Seoul, South Korea (email)
Bong Dae Choi - Department of Mathematics and Telecommunication Mathematics Research Center, Korea University, Seoul, South Korea (email)

Abstract: In this paper, we propose a Call Admission Control (CAC) scheme by dynamic bandwidth reservation where a new call is admitted only when both the remaining resource units at the serving Base Station (BS) excluding the resource units of ongoing calls in the BS and the reserved resource units of anticipated incoming handoff calls from direct neighbor cell is enough to accommodate the new call, and when the next cell for this call to visit has enough resource units to accommodate the new call. The proposed call admission control incorporates both mobile information such as position, speed, and next cell to visit by using bidirectional navigator and road layout information. Simulation results show that the handoff call dropping probability and new call blocking probability of our proposed CAC scheme are lower than an existing similar CAC scheme, respectively. To show the practicality of the assumption of having bidirectional navigator for each Mobile Station (MS), we give a simulation where some MSs have bidirectional navigators and some MSs don't have. The simulation results show that more MSs with bidirectional navigators, less the new call blocking probability, while keeping handoff call dropping probability at the same level.

Keywords:  Admission control, dynamic bandwidth reservation, navigator.
Mathematics Subject Classification:  Primary: 58F15, 58F17; Secondary: 53C35.

Received: May 2011;      Revised: August 2011;      Published: November 2011.

 References