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首页> 外文期刊>Wireless personal communications: An Internaional Journal >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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A Joint CAC and Dynamic Bandwidth Allocation Technique for Capacity and QoS Analysis in Heterogeneous LTE based BWA Network: Few Case Studies

机译：基于非均匀LTE基于BWA网络的容量和QoS分析的联合CAC和动态带宽分配技术：几个案例研究

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摘要

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.
机译：宽带无线接入（BWA）诸如LTE的网络以不同的无线电接入技术，多层架构和各种协议的共同实施而言，以支持具有所需服务质量（QoS）的各种类型的服务。但是，由于LTE-BWA网络的带宽和高需求有限，需要有效的网络规划以有效的方式利用可用的无线电资源。为了实现该目标，本文旨在为基于非均相LTE的BWA网络（BWA HET-NET）来实现独特的无线电资源管理方案，该网络（BWA HET网）包括小小区以及宏小区。所提出的分析有两个组成部分：（1）收到的信号强度（RSS）的CAC政策; （2）QoS配置的动态带宽分配（DBA）方案。这项工作的新颖性在于将基于RSS的CAC策略与DBA方案集成在不同的QoS参数中的改进性能，如新的呼叫阻止概率（NCBP），手中呼叫丢弃概率（HCDP）和带宽利用率（BU） 。还开发了基于Markov链基于Markov链的数学模型，用于对这些QoS参数的实际分析。双层LTE BWA HET-Net中的CAC和DBA方案（JCAC-DBA）显着提高了网络的不同组合，为非均相多媒体服务的不同组合而显着提高了网络的NCBP，HCDP，BU和整体能力。

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