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Enhanced Adaptive Call Admission Control Scheme With Bandwidth Reservation for LTE Networks

Enhanced Adaptive Call Admission Control Scheme With Bandwidth Reservation for LTE Networks

Maniru Malami Umar, Amimu Mohammed, Abubakar Roko, Ahmed Yusuf Tambuwal, Abdulhakeem Abdulazeez
Copyright: © 2021 |Volume: 12 |Issue: 1 |Pages: 20
ISSN: 1937-9412|EISSN: 1937-9404|EISBN13: 9781799860082|DOI: 10.4018/IJMCMC.2021010102
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MLA

Umar, Maniru Malami, et al. "Enhanced Adaptive Call Admission Control Scheme With Bandwidth Reservation for LTE Networks." IJMCMC vol.12, no.1 2021: pp.23-42. http://doi.org/10.4018/IJMCMC.2021010102

APA

Umar, M. M., Mohammed, A., Roko, A., Tambuwal, A. Y., & Abdulazeez, A. (2021). Enhanced Adaptive Call Admission Control Scheme With Bandwidth Reservation for LTE Networks. International Journal of Mobile Computing and Multimedia Communications (IJMCMC), 12(1), 23-42. http://doi.org/10.4018/IJMCMC.2021010102

Chicago

Umar, Maniru Malami, et al. "Enhanced Adaptive Call Admission Control Scheme With Bandwidth Reservation for LTE Networks," International Journal of Mobile Computing and Multimedia Communications (IJMCMC) 12, no.1: 23-42. http://doi.org/10.4018/IJMCMC.2021010102

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Abstract

Call admission control (CAC) is one of the radio resource management techniques that regulates and provide resources for new or ongoing calls in the network. The existing CAC schemes wastes bandwidth due to its failure to check before degrading admitted real-time calls and it also increases the call dropping probability (CBP) and calling blocking probability (CBP) of real-time calls due to the delay incurred when bandwidth is degraded from them. This paper proposed an enhanced adaptive call admission control (EA-CAC) scheme with bandwidth reservation. The scheme employs a prior-check mechanism that ensured bandwidth to be degraded will be enough to admit the new call request. It further incorporates an adaptive degradation mechanism that degrades non-real time calls before degrading the RT calls. The performance of the EA-CAC scheme was evaluated against two existing schemes using Vienna LTE system level simulator. The EA-CAC scheme exhibits better performance compared to the two schemes in terms of throughput, CBP, and CDP of RT calls without sacrificing the performance of NRT calls.

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