Title: Performance evaluation of call admission control based on signal quality in cellular mobile networks

Authors: Rakhee Kulshrestha; Shruti

Addresses: Department of Mathematics, Birla Institute of Technology and Science Pilani, Pilani Campus, India ' Department of Mathematics, Birla Institute of Technology and Science Pilani, Pilani Campus, India

Abstract: The subscription of cellular networks is continuing to experience a growth at an unprecedented rate. It becomes a significant challenge for the cellular service provider to accommodate huge traffic demands while satisfying the desired quality of service (QoS) level perceived by the users. This paper proposes a new call admission control (CAC) scheme based on the quality of signals to support the guarantees of QoS. The proposed scheme also provides an algorithm to determine the optimal value of acceptance probability of new calls under the fractional guard channel (FGC) scheme which minimises the new call blocking probability. Moreover, there is a provision of finite buffer for handoff calls to further enhance the QoS of handoff users. Also, the paper includes numerical results to validate the effectiveness of the proposed scheme. Overall, this work provides an effective CAC model for optimising the performance of cellular networks.

Keywords: call admission control; CAC; fractional guard channel; FGC; signal quality; handoff; optimisation; Markov chain; cellular networks.

DOI: 10.1504/IJMOR.2021.117635

International Journal of Mathematics in Operational Research, 2021 Vol.20 No.1, pp.1 - 19

Received: 01 Feb 2020
Accepted: 11 Jun 2020
Published online: 17 Sep 2021 *

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