QOS EVALUATION OF HETEROGENEOUS NETWORKS: APPLICATION-BASED APPROACH

Farnaz Farid, Seyed Shahrestani and Chun Ruan 

School of Computing, Engineering and Mathematics, Western Sydney University, 

Sydney, Australia 

ABSTRACT

In this paper, an application-based QoS evaluation approach for heterogeneous networks is proposed.It is  possible to expand the network capacity and coverage in a dynamic fashion by applying heterogeneous  wireless network architecture. However, the Quality of Service (QoS) evaluation of this type of network architecture is very challenging due to the presence of different communication technologies. Different technologies have  different  characteristics and the applications that utilize them have unique QoS requirements. Although, the communication technologies have different performance measurement parameters, the applications using these radio access networks have the same QoS requirements. As a result, it would be easier to evaluate the QoS of the access networks and the overall network configuration based on the performance of applications running on them. Using such applicationbased QoS evaluation approach, the heterogeneous nature of the underlying networks and the diversity of their traffic can be adequately taken into account. Through simulation studies, we show that the application performance based assessment approach facilitates better QoS management and monitoring of 

heterogeneous network configurations. 

KEYWORDS

QoS; QoS metric; Dynamic weight; Unified QoS Metric; application weight; weight

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