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Evaluating the 3G Network Performance by Virtual Testing

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Author(s): Prabu Jayakumar | Chiew Foong Kwong

Journal: International Journal of Network and Mobile Technologies
ISSN 2229-9114

Volume: 2;
Issue: 3;
Start page: 125;
Date: 2011;
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Keywords: UTRAN | Network Planning | Virtual Testing | Optimisation | Cell Shrinking | Eb/No | CPICHRSCP

ABSTRACT
The third Generation Universal Mobile Telecommunications System (UMTS) is a well established technology which carries data, voice and multimedia traffics; consequently it means that the vast amount of traffic is handled at Node-B and controlled by Radio Network Controller (RNC) as a major network end interface. Furthermore, the Quality of Service (QoS) is a key concern in wireless networks and it has been achieved by extensive testing of UTRAN; precisely the testing effort is an important requirement of heterogeneous networks. In the beginning stage of the project a detail case study is made about the cellular network planning, designing and optimization techniques, based on the study, a set of problems is observed and a major problemis chosen as a sample for computational experiment. In this project a simulation based approach is used to implement the UTMS network, the virtual field testing concept is to evaluate the performance of UMTSTerrestrial Radio Access Network (UTRAN) terminal and to analyse the Radio Resource Management (RRM) function. There are several factors and criteria that have to be measured and to assess the performance ofUMTS network. The Qualnet software is used for computational experiment; five different types of scenarios are developed to analyse the network behaviours. The scenario-1 is designed to perform the virtual field testing and the following parameters are measured: Energy per bit to noise ratio density (Eb/No), Common Pilot Channel Received Signal Code Power (CPICHRSCP) and User Equipment (UE) layer -2 massages. Beside these measurements sceanario-2 is developed to optimize the QoS by redefining scenario-1. Additionally Scenario-3, 4 and 5 are designed with different traffic ranges to analyse the capacity and coverage interlink. All the computational experiments are carried using the (Constant Bit Rate) CBR traffic.
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