EN/LZT R2C -i - GSM System Survey t io e n na lly t In Bl n a k -ii- . Ericsson launches the world's first cellular system in Saudi Arabia. Ericsson Gsm System Survey PDF - Free download as PDF File .pdf), Text File . txt) or read online for free. Ericsson-gsm-system-survey-pdf. Download PDF GSM System Survey DISCLAIMER This book is a training document and contains simplifications. Ericsson assumes no legal responsibility for any error or damage resulting from the usage of this document.
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GSM System Survey R9A by Ericsson (Student Book) - (11 Operation and Support System RC X TCP/IP TCP/IP Download PDF. GSM System Survey R9A by Ericsson (Student Book) - (13 Charging and AccountingBusiness logic Multi Mediation is. Download PDF. Ericsson's GSM systems. Note: as with many survey courses, the student book for this course acts as a reference guide. The teacher should pick out the most.
Performance statistics workflow includes actions to collect data, make trend analysis and present the findings. These findings initiate either the network optimization or the network configuration workflow. The network surveillance workflow is initiated after performance-related alarms.
Radio network optimization workflow is started when a problem is detected somewhere in the network during for example the performance statistics.
Included in the workflow are the creation of measurements in the trouble area and the analysis of the report created from this measurement. The output is the result from this analysis is taken care of in the Network configuration workflow. The actions taken could be a cell re-definition or addition of a BTS. It allows performing upgrades of the node releases in a very time and cost effective way. The workflows secure a high network quality as cost efficiently as possible. They cater for the constant challenges coming from changes in network size and end-user behavior.
The challenge is therefore to minimize the time for fault finding, network expansion and network optimization, and thereby maximize the airtime. OSS RC supports these workflows through corresponding sets of features developed to optimize each workflow. It includes all the basic necessary functions to access and control remotely nodes in the network.
The two main functions supported are basic configuration management and fault management.
It contains specially developed scripts to perform e. It has functions to e. Figure The Activity Manager can be programmed to automatically verify the status of each ongoing application. It includes application process supervision, error logging and reporting, trace, restart and communication protocol handling. GNIP can present both geographical and logical views of the network.
Filters can be applied to any view to limit the amount of details on the screen and zooming and panning is supported for easy navigation. Land, water and large cities are presented in a bottom raster layer of the map.
GNIP Text and Vector layers as main roads, city-names, railroads, borders, shorelines and rivers are displayed on top of each other and can independently be switched on or off. The scale is 1: Additional Maps are provided as an Adaptation Service.
The access control function performs automatic log-off of terminals, access restriction of terminal ports, logging of unsuccessful log-on attempts, and password control. OSS RC also provides a number of authorization mechanisms by which access to network elements and specific management functions can be restricted. Using common security functions in OSS RC gives an easy to use and secure way of handling the different OSS features and the connections to the network elements.
OSS RC alarm handling covers both network element and transmission link alarms, as well as other external alarms. Includes the feature Fault Management Basic. The following basic functionality is included in the Fault Management area: Alarms can be received from any type of network element as long as the corresponding Alarm Adaptation Unit AAU is installed.
Fault Management Viewer FMV contains the functions for viewing the network alarm status on a geographical map and in alarm lists. The Alarm Status Viewer displays the network alarm situation on the GNIP map, and the Alarm List Viewer contains functions for viewing the alarm lists and for searching in the alarm log see figure The alarms can be sorted depending on criteria like time or originating network element, and the complete alarm information is easily displayed by expanding the alarm.
This is achieved through different configuration management tools, using pre-defined templates with complete consistency checks between parameters. The benefits are higher quality and capacity of the radio network in a shorter time, and with less effort from the operator.
The user can create a planned area to make some changes without affect the network to reduce risks with wrong update. The maintenance could be done using the consistency check to verify what the result with the changes done. After that we can use a tool to make available in the live network the attributes changed before.
Copy Live 2. Min 4. Report Generated 2 The copy of the Live Network can be used Max to make tests, for instance, cell power change wished 3 After the changes are made, CNA will execute a consistency check to verify if the changes made are correct or not 4 If not, will be generated a report and the changes will be removed. A wizard facilitates BTS parameter settings through automatic generation of the low- level parameters after the high level settings are done.
Consistency checks of cell parameters are performed, whereby the risk of introducing faults is significantly decreased. Parameters are then downloaded to the network immediately or scheduled for downloading at a future point in time. Network Configurators also make it possible to keep track of hardware installed at the BTS sites, thanks to a hardware register. The package also manages the BTS alarm configuration. Alarms that are not forwarded to OSS RC due to alarm co- ordination or masking can still be retrieved from the BSC and presented in an outstanding alarm report.
All fault and status information of the BTS managed objects is presented in an interpreted and readable way.
Outstanding Alarm Cellular Network Administration CNA manages the radio network cell data, like cell identities, handover parameters, neighbor cell relations and power control parameters. Cell data in the BSCs and MSCs are mirrored in the CNA database, where users work off-line of the real network when planning the introduction of new cells, or changing parameters in others.
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Parameters in the planning area can be checked with operating network parameters in order not to jeopardize network quality with corrupt data. The update function with time scheduling makes it possible to implement a cellular network configuration overnight. It is especially valuable for data exchange with radio network planning systems.
The network browser in the BCM base window contains a list of all BTS replacement units and this is used as entry points to the hardware information. BHW can also handle off-line information about site equipment, like power supplies, antennas, fans, etc.
The function has a planned area allowing the user to work with BTS data without interaction with the network elements. The planned changes can be scheduled for introduction in the network at a time when the changing procedure causes little or no impact on the traffic.
A planning wizard is integrated in the application, which guides the user in the complex task of planning new or changed BTS configurations by proposing parameter settings that are consistent with the capabilities offered by different types of BTSs.
Network Optimizers. With this package, measurements and generation of statistics are used to pinpoint performance related problems and provide optimal configuration of the radio network. With an optimally configured network, return on investment is maximized through increased network capacity with a minimum of infrastructure.
Network Optimizers in OSS RC generate performance reports and give recommendations of network improvements, which can directly be downloaded, to the real network. It can be used for general measurements of the service quality or for tracing the radio behavior of specified mobile stations, such as a test mobile, or the equipment of a complaining customer.
RNR has three main features: Frequency Allocation Support FAS ensures that optimal frequency plans are implemented in order to achieve a high capacity radio network with high speech quality and few dropped calls. FAS complements cell planning tools by providing uplink and downlink measurements in the live network on free timeslots either in the signaling or traffic channels. Support for implementing recommended frequency changes is included, and after a frequency reallocation has been made, the result can be studied with the FAS comparison reports.
The neighbor relations are defined in network planning tools and NCS verifies these by measurements in the live network and proposes improved parameter settings when necessary.
Ericsson Gsm System Survey PDF
NCS uses the neighbor cell measurements that the mobile stations make during the connections, complemented with measurements of handover statistics, to determine whether to add or delete candidates in the neighbor cell lists.
The user can start or schedule collection of reports of up to BCCH. Results of measurements are then presented to operator to suggest changes in the list of neighboring cell ABAL. Measurement Result Recording MRR collects measurement results that are continuously generated by all mobile stations and base stations in up to 2, cells.
This feature is similar to. Cell Traffic Recording. The following statistical reports about the radio environment are generated: The output of the algorithm is a set of proposed change to the cell plan. Those changes can be automatically downloaded in the network automatic mode , or can be activated manually and by operator recommendation mode.
Neighboring Cell Optimization expert NOX is an expert feature that allows the operator to define algorithms to analyze measurements results produced by NCS. The output of the algorithm is a set of proposed change in the list of neighboring cells. Those changes can be automatically implemented in the network automatic mode , or can be activated manually and by operator recommendation mode.
Traffic Estimation Tool TET is intended to facilitate capacity enhancements in areas where coverage is good, by, for instance, introducing hot spot micro cells. TET measures the traffic a new cell would catch. This is achieved by placing a test transmitter on a test site and including its frequency in the active BA lists of surrounding cells. Measurement reports from mobile terminals will then give information on how often the test transmitter BTS represents the best handover candidate.
The improved generation of statistics provides the possibility for increased quality and capacity of the radio and core network through early response to problems or negative trends, and shorter turn around time for network optimization.
The package also increases cost efficiency via simplified report generation. The benefit is that the operator will get the highest available radio network performance out of existing equipment, with less effort and at low cost.
GSM System Survey Network Statistics package collects the statistical data generated in the network elements and creates reports. Thresholds can be set, to alert the operator when statistics are showing an undesirable trend or abnormal situations. The pre-defined reports in OSS RC are designed to fulfill a large set of requirements related to the different part of the operators organization.
Ericsson long experience on what parameters to focus on is available from day one. It is constituted of two parts: It provides the 2nd open interface toward upper systems. In this case it is a GSM Thresholds can be defined both floating and absolute threshold values are supported and alarms are generated if they are crossed.
The alarms are sent to the fault management function. The alarm indicates which threshold has been crossed, and the severity level of the alarm is definable by the user.
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Network Statistics Analyzer NWS-A is a set of pre-defined reports issued by Report Generator Business Objects, and incorporates the long experience earned by Ericsson in the areas of network planning, optimization and engineering.
These pre-defined reports include overview reports, planning reports, dropped call reports and hand-over reports. The benefits are cost efficient fault management and increased in service performance. Rules to discriminate certain types of alarms under certain circumstances can be set by the operator.
When an alarm is received, information about previous handling of similar alarms guides the operator in their action. In simple cases, Network Surveyors can automatically perform the whole process from alarm detection to clearance. In more complex situations or situations where HW is involved, the package reduces the number of steps to be taken in the alarm handling process.
Fault Management expert FMX comprises functions to incorporate expert knowledge into the OSS RC fault management in order to provide users with a clearer and more accurate understanding of the status of the managed network.
FMX correlates and filters alarms from several related network elements based on advanced rules that are defined by the operators with user-friendly drag-and-drop graphics. It correlates and filters alarms from related network elements based on rules developed by Ericsson services. Software loading and activation is performed both in BTS and AXE switches, and includes everything from small upgrades or error corrections, to complete function changes when introducing, for example, new software releases.
Besides speeding up the introduction of new functionality in the network, Software Managers package increases reliability of the process through the. The package also increases operator efficiency through automatic control of command files.
Function change of SW normally involves extensive command handling, but with OSS RC pre-defined scripts, the task is speeded up, and human errors are minimized. The ability to upgrade many network elements at the same time, and to do this without traveling to sites, leads to less time spent in the upgrading process. Performing the upgrades centrally by the same person also gives a consistency in the network. The registration of the new SW versions is automatic, which means better control of the release handling and easy detection of differences between network nodes.
Software Management Organizer SMO provides the operator with uniform and centralized SW management, and a process oriented way of working with all supported network element types. With SMO the operator can supervise parallel activation jobs towards multiple network elements from one single terminal.
For example, for AXE based network elements SMO can execute SW activation of at least 30 elements in parallel while maintaining full control of the process. SMO controls the activation scripts, and the scripts use the ASM command line interface functionality for specific operations. It is used for advanced development and run- time control of command scripts.
OPS supports editing, debugging and execution of scripts, and is used to automate complex and often repeated operation and maintenance tasks for AXE based network elements. Ericsson's GSM systems provide this by offering a number of different basic telecommunication services. The service functionality of Ericsson's GSM system improves with each system release. Technical specifications are continuously being developed in order to incorporate new and improved functions into the system.
These are available to all subscribers to a mobile network.
For example, the ability to make voice telephone calls is a basic service. These are additional services that are available by subscription only.
Call forwarding is an example of a supplementary service. These services are distinguished by being implemented in a special way. In theory one could implement the same service as a Supplementary Service or as an Intelligent Network Service.
Prepaid services are an example of an Intelligent Network Service. In addition, basic telecommunication services can be divided into two main categories: A bearer service transports speech and data as digital information within the network between user interfaces. A bearer service is the capability to transfer information and does not include the end-user equipment.
Every teleservice is associated with a bearer service. For example, a bearer service associated with the speech telephony teleservice is the timeslot assigned to a call on a TDMA frame over the air interface. A teleservice allows the subscriber to communicate usually via voice, fax, data or SMS with another subscriber. It is a complete system including necessary terminal equipment. The DTI supports data services offered by the system. Traffic to PSTN: Traffic to ISDN: Unrestricted digital information is transferred and no modem is necessary.
With synchronous data transfers a packet mode terminal can be directly connected to the MS. Traffic to Internet: However, the direct access function enables an MSC to communicate directly with Internet nodes, thus reducing call set-up time.
This is the most fundamental service offered. The emergency call function enables a subscriber to make an emergency call by pressing a predefined button or by using the emergency number.
With an emergency area origin identifier, the call is automatically routed to the emergency center nearest to the subscriber. Emergency calls can be made with the phone itself, without a valid SIM-card, overriding locked phone and pin codes. The accuracy varies depending on the positioning method used but ranges between to below 10 meters. It is envisaged many new subscriber services, based on positioning, will emerge. An example would be the provision of tourist information e.
See chapter 7 on RAN Facsimile group 3: Standard fax machines are designed to be connected to a telephone using analog signals, a special fax converter is connected to the exchange. Describe edipo rey sofocles obra ebook site pdf shikasta by doris lessing completa pdf general terms used in the GSM system.
Quality degradation in a GSM network can be due to many factors such as capacity limitation, interference. Limited in a practical communication system and the primary method that is employed in arresting capacity. Cellular network can be described as an Erlangs loss system and. Ericsson, the manufacturer of equipment installed in both Serbian. Deepeshhie rarchy.
Per BTS, according to Ericsson standard. Im looking for an assignment within telecom, embedded systems or IT and I want to. Global System for Mobile Communication. This document describes the course, for a detailed system description see.
Jul 6, Of GSM then i read some parts of Ericssons education notes and a book about. Global system for mobile communication GSM standard for digital. Duration and. Flag for inappropriate content. Related titles. Jump to Page. Search inside document. Dolce Key. Danilo Najarro. Junrevol Wicaksana Putra. Mohammad Faruque Hossain. Isac Lima. Rwayda Nadim. Asif Akhtar. Gaurav Sharma.
Mojo Crat.People without income and people who only need to use a mobile phone occasionally often use this method of payment and those who do not want to pay monthly rates for a phone they rarely use.
Ericsson gsm system survey pdf Global system for mobile communication GSM standard for digital. The PIN consists of 4 to 8 digits. HLR 3. Goku Chan. The user may wish to reduce their bandwidth due to costs or because they do not need it for some time during a call e. Because no acknowledgment is sent to the MS, no further attempt is made. The only exceptions to this SMS text messages are are in cells with high or low traffic loads. The mobile phone rings. However, to maximize capacity the frequency re-use distance should be kept as low as possible.