IRIS TRMDO services are divided into the modules. Combinations of different modules form the services. Each module is also available stand alone. This system enables IRIS services to be tailored according to the customer requirements.
Following are the descriptions of the TRMDO service modules.
Map Data Handling
A digital map database is required when working with any computerised Transmission Network Design/Optimisation tool. If such a map database isn’t available it is necessary to create one. This is done through the Map Data Handling activity. The digital map database includes terrain height contours, different kinds of land usage codes (Morphology) and background information, such as roads and coastlines. The map database should be created by digitising topographical maps or converting digital map data to a suitable format. The creation of a digital map database is rather time consuming and must be completed before starting the other activities. The Map Data Handling deliverable is a digital map database suitable for the used tools.
Database Handling & Review
This module is necessary when realizing TRMDO services on a network that is already in use, e.g. New Site Interconnecting or Capacity/Performance optimisation activities.
With Database Handling & Review module, IRIS gets solid understanding and background of the existing network and builds up additional values on it accordingly. It is required to have an accurate & updated database in order to obtain right results from this module. Output of this module mostly has direct affect on the relevant TRMDO service.
Nominal Transmission Plan / Initial Design
This is the module where the initial study of the selected TRMDO service is made by IRIS engineers. If it is a New Network, Nominal Transmission Plan is prepared. If it is a New Site Interconnection to the existing network initial design is prepared for the transmission path etc. All studies are performed according to the customer service requirements. Outcome of Nominal Transmission Plan / Initial Design study is presented to the customer with a detailed report and get agree on it in order to proceed with the following steps.
Line of Sight Survey
Line of Sight (LOS) survey is performed after the Nominal Transmission Plan / Initial Design is completed. The aim of this module is to verify that initially planned transmission paths are available with the proposed site heights. Special tools are used for that purpose. Results of LOS activities are presented in LOS reports. Final Design of Transmission Network is very much dependent on the LOS reports.
Network Media Decision
The media type for each radio site that will be used to provide transmission is decided with this study. Transmission distance, capacity and design criteria are the main inputs that considered for the network media decision. The results of this module are also used in Final Design step.
Site Positioning Evaluation
Site Positioning Evaluation is the process where the position of transmission media is identified as height and azimuth according to the path that will be followed. This module uses the results of LOS survey activities and network media decision activities as inputs. Installation basics are the other inputs for this activity. It is one other input for the Final Transmission Design.
Microwave Frequency Planning
In this module the microwave frequency plan, which details the frequencies allocated for use in each microwave is produced. The microwave frequency plan is based on the intra network interference and the available frequency band considering the possible network expansions both in terms of capacity and quantity. It is developed utilising the transmission network planning tool with the relevant network database (either nominal or existing) in which interference predictions are also carried out.
Final Transmission Plan
When all above activities are completed, Transmission Network Design is completed. The link paths, media types, site positioning and microwave frequency plan are revised to reflect the confirmed results. Together with the revised details including Transmission Network Plan objectives, Transmission Network dimensioning and configuration, Frequency Plan and Interference Calculation Results, a summary of network data is compiled in a Final Transmission Network Design Report and presented to the customer.
Preparation of Network Data
IRIS TRMDO performs final transmission planning and creates Network Data to review and accept the routing plans on an E1 level, MUX diagrams and DDF diagrams in order to integrate the links to the Transmission Management System.
Integration to Management System
The new transmission plan management will be integrated into the existing management system. A new management system will be designed if doesn’t exist. Equipment IDs will be assigned for each terminal. All new requirements and plan for the management system will be defined. The output of this stage is a updated or new Transmission Management System Plan.
Link Capacity Analysis
This is the module preformed for Transmission Capacity Optimisation service. All the links are analyzed from the capacity point of view and recommendations provided with a detailed report in order to secure the service stability of transmission network from the capacity point of view and have best utilization on the idle capacity if there is any.
Link Performance and Availability Analysis
This module is performed for Transmission Performance Optimisation service to evaluate and optimise the performance of the transmission network. Followed paths of the links are analysed and availability calculations according to the existing and forecasted figures are performed within this activity. Short & Long term recommendations are provided with detailed report.
Reporting
All activities performed by IRIS TRMDO services are presented to the customer with a professional and detailed report. IRIS has special user friendly report formats for each of the services. The reports contain all the details of the realized studies with easy understandable graphs and plots, presented both in soft and hard formats.
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