Operations Support Systems, Implication of Software Errors in GSM Network Performance

Description

Download Operations Support Systems, Implication of Software Errors in GSM Network Performance. Electrical and Computer Engineering students who are writing their projects can get this material to aid their research work.

Abstract

One of the most important requirements to be addressed by a general-purpose Fault Management (FM) system is the ability to quickly identify the root cause of network errors and fix them as soon as possible. This informs the maintenance of an accurate model of the mobile network error logs for the FM task.

And the faults dynamic feature trend/statistical analysis of the error-log message summary for both the Base Station Subsystems and Mobile Switching Centers by comparing the relationship between the twin parameters of Frequency of Occurrence and the Mean Time to Repair each fault type.

The Fault Trend Analysis shows that as the numbers of times a particular fault type occur increases the Mean Time to Repair such faults decreases, with some deviation from this trend in some cases when we classified them as high priority faults with serious impact on network performance and those that have little or no impact on network performance.

Filtering and Correlation are two methods we used to simplify the separation of the principal alarms and redundant alarms from their side effect on network performance.

Introduction

The Second-Generation Global System for Mobile communications (2G GSM) was designed primarily to provide circuit switched speech and data value added services were simply based on the Short Message Services (SMS). Today, most GSM network Operators are experienced in a voice oriented Time Division Multiplexed (TDM).

And have gone further to introduce a more complex Third Generation (3G) networks which is based on the Code Division Multiplexed (CDM) technologies with its other flavors, e. g. Wideband Code Division Multiple Access (WCDMA), Asynchronous Transport Module (ATM) in the transport layer for the Universal Mobile.

Following development of the internet, the General Packet Radio Services (GPRS) was introduced to handle packet data services in GSM network. An additional Internet Protocol (IP) network infrastructure was introduced along with new services platforms, e.g. the Multimedia Messaging Services (MMS).

Information Technology components such as Network Management System (NMS) and Operations Support Systems (OSS) needs to be enhanced to be able to properly monitor and manage GSM network elements end-to-end (Nicolas and Pierce-Nenri, 2003). Hence, network monitoring tools are sufficiently implemented in network operation and maintenance. 

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