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A Joint CAC and Dynamic Bandwidth Allocation Technique for Capacity and QoS Analysis in Heterogeneous LTE based BWA Network: Few Case Studies

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Abstract

Broadband Wireless Access (BWA) network such as LTE brings heterogeneity in terms of different radio access technologies, multi-tier architectures and co-implementation of various protocols to support various types of services with desired Quality of Service (QoS) for the subscribers. However, due to limited bandwidth and high demand of LTE-BWA networks, effective network planning is required to utilize the available radio resources in an efficient way. To achieve this target, this paper aims to implement a unique Radio Resource Management scheme for a heterogeneous LTE based BWA network (BWA Het-Nets) which consists of Small cells along with Macro cells. The proposed analysis has two components: (1) Received Signal Strength (RSS) based CAC policy; and (2) Dynamic Bandwidth Allocation (DBA) scheme for QoS provisioning. The novelty of this work lies on the integration of the RSS based CAC policy with DBA scheme for improved performance in terms of different QoS parameters like New Call Blocking Probability (NCBP), Hand off Call Dropping Probability (HCDP) and Bandwidth Utilization (BU). A Continuous Time Markov Chain based mathematical model is also developed for the realistic analysis of those QoS parameters. The Joint CAC and DBA scheme (JCAC-DBA) in two-tier LTE BWA Het-Nets significantly improves NCBP, HCDP, BU and overall capacity of the network under different combinations of macro/small cells for heterogeneous multimedia services.

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Acknowledgements

The authors deeply acknowledge the support from UGC, Govt. of India for this work in the form of University with potential for Excellence Phase II, Project on Call Admission Control for the Optimisation of Resource Utilisation in the Department of Electronics Telecommunication Engineering, Jadavpur University. The authors also humbly admire the support from Department of Electronics Telecommunication Engineering, Jadavpur University for this research work in the form of State Govt. Fellowship Scheme.

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  1. Department of Electronics and Telecommunication Engineering, Jadavpur University, Kolkata, West Bengal, 700032, India

    Arijeet Ghosh & Iti Saha Misra

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  1. Arijeet Ghosh
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Correspondence to Arijeet Ghosh.

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Ghosh, A., Misra, I.S. A Joint CAC and Dynamic Bandwidth Allocation Technique for Capacity and QoS Analysis in Heterogeneous LTE based BWA Network: Few Case Studies. Wireless Pers Commun 97, 2833–2857 (2017). https://doi.org/10.1007/s11277-017-4637-x

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