NOTICE!
description
Transcript of NOTICE!
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109-10-06
• These materials are prepared only for the students enrolled in the course Distributed Software Development (DSD) at the Department of Computer Science and Engineering, University of Mälardalen, Västerås, Sweden and at the Faculty of Electrical Engineering and Computing, University of Zagreb, Croatia (year 2009/2010).
• For all other purposes, authors’ written permission is needed!
• The purpose of these materials is to help students in better
understanding of lectures in DSD and not their replacement!
NOTICE!
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Distributed Software Development
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Requirements Definition and Design Description
Vijaya Cherukuri and Gordan Kreković
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The Story Behind
Ring-ring! Hello?Ring-ring! Hello?Ring-ring! Hello?
Mobile originated/terminated callMobile originated/terminated SMS
GPRS
NRTRDE System
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CONVERSIONAND LOADING
RATING
SUSPENSION
ADMINISTRATIONREPORTING
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Conversion Process
ASN.1
CSV
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Loading Process
• Keeping a log of processed files– Time stamps
– File names
– Number of records
– Sender
– Conversion and loading status
• Invoked from a shell script at predefined period of time.
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Rating Engine
• Price depends on:– Operator
– Geographic zone
– Time zone
– Service
– Duration / volume
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Geographic zone
• Determined by a prefix of a B-number
+390862...+38591...+38542...+3851...+9140...+385...+92...
– every operator has own price for each geo-zone
– searching starts with longest prefix to avoid ambiguity
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Time zone
• Determined by a start time of an event
peakoff-peaknight...
– time zone is continual period of a day with same price
– every operator has own time zones and own prices for each zone
– each day can have different zones – problem!
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Duration
• A calling event is consisted of:– a first interval
– as many as needed next intervals
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Rating Algorithm
• Find geographic zone
• Find time zone
• Get duration and prices for first and next segments for given operator, geo-zone, time zone and service
• Get factor from operator
• Compute price
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Suspension
• Generate a list of subscribers for suspension
• The list should be created– in the database
– XML format
• Suspension criteria:– logic expression; variables
• total expense, total duration/volume, number of events
• expense, duration/volume per event
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Reports
• The system should be able to generate reports giving: – IMSI (MSISDN) – time period – roaming partner PLMN – duration (volume) by service – amount
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Administration Application
The administration application will enable: – creation, deletion and modification of
new entries in rating tables – creation, deletion and modification of
suspension rules – monitoring and management of the
loading process – creation of error reports
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Non-functional Requirements
• Applications will be implemented as web application– no special client software on the agent side
– GUI should behave and look the same in different web browsers
• Monolithic system
• Archive backup
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Use C
ase Diagram
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Use C
ase Diagram
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Activity D
iagram
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Activity Diagram
Activity D
iagram
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Requirements Group
• Conversion and loading process (CLP)
• Rating engine (RE)
• Reports (RT)
• Administration application (ADM)
• Other (OTH)
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Importance of Each Group
CLP RE RT ADM OTH0
2
4
6
8
10
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Priorities
• Processing system is not acceptable without any of mentioned parts– except file converter because we can use
existing one
• Non-functional requirements (OTH) are less important
• Optional requirements in ADM group– ability to administrate operators list
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Database Design
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Architecture
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Components
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Linux
GNU/C, shell script, daemon programming, ODBC PL/SQL
procedures, PostgreSql
Apache, PHP, HTML, XML
Technologies
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ProgressUnderstanding of Requirements
Design
Technology/Environment setup
Communication
Implementation
Confidence
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The End
It’s time for questions!Tank you!