Production Engineering Unit:

Dynamic and in unison with Research Unit and in the field of contemplating Research Projects, the Production Engineering Unit of The Mobile Communications Technologies Company is also active and was able to undertake manufacturing of BSS systems and their Quality Control.

Noting the high technology of design and manufacture of Cellular Mobile Network equipments, its production has a special importance. Procuring components with essential quality, preparing the boards (up to 6 layers) and the units, the necessity of using proper test and evaluation instruments, signifies the major role of Production Engineering Unit. Since any mistake in using or negligence in proper usage of the components and related assembly, in the setup of a million components and how to operate them can be a great short come for an ideal product.

This kind of accuracy particularly in the production of RF boards operating with high frequencies has a two-fold significance since even a slight neglect in the way of soldering of a component can produce side effects (noise, power drop and etc), which this type of fault finding can be harsher than the production itself.

It must be also noted that in one hand producing a rack consistent with the environmental and geographic conditions of Iran and on the other hand the convenience of placing the units inside it for the purpose of installation and assembly and also interconnections of the boards with the shortest distance possible and optimum wiring and displacement of the units and the ease of repairing them, requires a kind of planning, experience and expertise, which the employees of MCT Production Engineering Unit have acquired gradually and over the years and used them in the production process, in a manner that MCT products are at the level of global distinctions.

The Production unit covers an area of 1300-squared meter and the employees working in this unit are mostly skilled engineers and technicians constituting the following sections:

1-      Production planning Unit

2-      Production Shop floors

3-      Trade and Components Procurement Unit

4-      Administrative and Service Unit

5-      Warehouse

Projects being implemented:

1- BTS 1+1+1                        

2- BTS 2+2+2                        

3- BTS 4+4+4                        

4- BSC/TRAU                                   

5- BSC 1024 SAMPLE

6- OMC

Future Projects:

1-      BSC/BTS

2-      OUT DOOR RACK

3-      MICRO BTS

4-      DCS 1800

Research Unit consists of the following sections:

 a) Signal Processing:

1- The Way of Activities:

The Signal Processing group within the complex of research unit is in charge of research and developing software, which are mainly placed on the intermediate layer of Telecom systems. The meaning of intermediate layer is a part of software constituting the interface of the system Protocol Layers and Physical Layer. The source and channel encoders and Physical Layer Controller consist a part of these programs. The work implementation stages in this section include five phases of Study, design, simulation and finally the project rollout, testing and delivery.

             ·         The Study Phase: In this phase the sources of preliminary study concerning the general topics of the project are collected and then standards and technical documents necessary for planning the software are prepared.

·         The Software Planning Phase: In this part the general planning is prepared and subsequently the specified details of the plan are distributed among different personnel involved in the project.

·         The Simulation Phase: Each employee in unison with the management conducts programming and simulation and subsequently these programs are linked together and tested initially.

·         The Rollout Phase: In this phase noting the hardware, which is normally DSP processors translate the software into DSP particular language and then the entire project as a program linked with the other parts of research is prepared accordingly.

·         The Test and Delivery Phase: In this phase all of the standard test processes are conducted and the program is prepared for field trial. In the field trial possible faults are also cleared.

2- Projects Under Implementation:

-          The part for channel coding and physical layer control in BTS

-          The part for speech coding and rate adaptation in TRAU

-          The part for channel coding in GPRS/EDGE project

-          MAC and RLC Layers in GPRS/EDGE system

3- Future Projects:

-          Channel coding and Node B control in 3G project

-          New speech coding in 3G

4- The Number of Employees:

Most of the permanent employees of this section possess MSC qualifications.

  The Network Control and Optimization Group:

1-      The Way of Activities:

·         This group has different and interrelated responsibilities discussed below:

-          Undertaking optimization of MCT sites through hardware troubleshooting and then reporting these cases to the technical support group. Adjusting each site parameters and assessing and precise analysis of the Counters and KPI for proper operation of the network, and also drive testing the regions covered by the MCT sites using TEMS software and assessing the foreign neighbors of other Vendors in their related Dump.

-          Planning and replacing site in the regions with no coverage through Asset software and proper planning of their respective frequencies.

-          Monitoring MCT BSS network throughout Iran and evaluating and solving the hardware and software problems of the network by OMC in cooperation with Protocol, DSP and RF groups.

2- Projects Under Implementation:

-          Exact assessment of all parameters intended for a site definition and their effects on the network, Counters and KPI.

-          Writing Macro programs in the Excel Software for convenient logging.

-          Filtering significant parameters for a site definition.

-          Changing the network KPI into graphical plots for the purpose of their daily comparison.

-          Evaluating the Dumps of other Vendors.

-          Programming in the Linux environment from the main Database.

3- Future Projects:

Design and production of intelligent OMC (SMART OMC). Altering parameters and their positive effect on the network noting the KPI.

4- Most of the expert colleagues of this group have MSC qualifications

b) Radio Group:

1- Related Activities:

-          Study, assessment, planning and manufacturing Analog and RF sections for Wireless Communication systems.

-           Consultancy and Technical Support of Production Unit, Training and development unit, supporting and maintaining the Sites.

2- Performed Projects:

- Planning, Manufacturing and optimizing Receiver, Transmitter, Power Amplifier, Power Combiner, Filters and Duplexer for GSM-900 System with versions 1 and 2 and DCS-1800 version 1 for Low Capacity and High Capacity BSS Systems.

3- Projects Under Implementation:

-          Planning and Manufacturing RF sections of Version 2.5 GSM-900 System and Version 2 of DCS-1800 System.

-          Optimization of Micro Strip and Ceramic designs for filters and Duplexer of GSM-900 and DCS-1800 Services

4- Future Projects:

-          Planning, Manufacturing and Optimizing RF sections for Higher Capacity and Low Capacity GSM-900 and DCS-1800 Services.

-          Study, Planning and Manufacturing XXPOLE Antennas for Micro Strip Structures intended for GSM-900 and DCS-1800 Services.

5- Active Personnel:

Active personnel currently involved in the Radio Group are 5 people who possess a mean 6 years of working background in the field of renowned projects within the radio group and studies of all these personnel with MSC in communications engineering is the Field Option.

c) Software Group:

GSM is a sophisticated system, which consists of various and divers constituents. It is imperative that optimum management and control of such a system, requires state of the art Maintenance facilities and operations.

This is made feasible through MMI software, for all network elements such as BTS, BSC, and OMC. Using this powerful software is convenient and is capable of future development and also consistency and linking with the added auxiliary applications.

To reach the abovementioned objectives, the following tasks incorporated in the MMI software:

-          Fault Management:

Fault Management can be divided into four main categories:

·         Fault Detection

·         Fault Restoration (clearing the fault)

·         Saving the Fault

·         Fault logging

The user has also online access to the maintenance documents, which provides him/her with complementary data regarding the fault and how to diagnose that particular fault.

-          The Test Management:

Testing the failure is a significant case and relates to the fault process and subsequent repair and restoration of defect units. As far as the fault management is concerned one of the initial duties in the process of testing, shall be locating and confirming the detected faults in a particular hardware unit.

-          Function Management

The tasks of Function Management include viewing the Traffic Load and the Network Functioning. The measuring parameters of short term and long term Traffic signify the functioning and quality of the service stored by the system and is accessible.

-          Configuration Management:

In this section all of the primary system configurations, proceeding with secondary configurations are contemplated. Operator can fulfill the operations of creating, deleting or locking/unlocking, activating/deactivating, initializing parameters and viewing values of these parameters.

-          Security Management

In MMI software along with the Database a mechanism exists which permits only the authorized individuals to access and operate on the system. This mechanism include the following cases:

• Whether the user was previously registered by the system? 
• Uniqueness of the user requesting access to the system
• The rights and levels of the access, according to the rights and access levels, which was recently registered in the system (Database) for the requesting user.

-          Mode Management:

All changes of Mode are displayed for the user graphically (color, shape, flashing) and/or in text.

-          Software Management

MMI software provides the user with different utilities so he/she can conduct software management conveniently. This sort of management can be separated into two parts. The first part relates to the management of various GSM system units software(s) including the following:

·         Loading BSS Software(s) (obtained from the manufacturer) on the system (using a floppy, CD, USB Flash)

·         Downloading these software(s) on the related units

·         Maintaining software(s) with different Versions

·         Activating the intended software(s)

·         Deleting the intended software(s)

The second part relates to the management of system Database.

MMI software architecture is in a way that to be independent from the system hardware plan as far as possible and also conforming with the current and prevailing standards of a application software.

 The following indicates the main MMI software specifications.

Operating system                                Linux System

Windowing System                            X-window System

Implementation Model                       Object-Oriented Environment

Coded Language                                C++ Language Coded