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20.04.2023 2
Agenda
• Multipath communication systems• CALM system • DOTEK• Parameters• Applications• Architecture• Usecase• Implementation• Summary• Demonstration
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Multipath communication systems
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CALM
ISO TC204, WG16.1 – „Communications Air-interface for Long and Medium range”
• Concept of complex standards identification the best available wireless access soution in given time and area
• CALM standards have implemented Policy-Based Management (PBM) approach.
• Handover in CALM is implemented on the L2 of the TCP/IP model.
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DOTEK
• Project of the communication module for transport telematics• CALM-based system with handover on L3 with available
technologies• Selects optimal (best) available access network according to
required parameters• It increases the value of important performance parameters
Parameters:• Actual measured parameters (latency, packet loss, SNR,…)• Statistic parameters (MTBF, MTTR, availability, reliability,…)• Static parameters (security level, price,…)
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DOTEK
Telematic applications• Fleet management systems• System for electronic fee collection (EFC)• Vehicle systems for communication with other vehicles and
infrastructure (C2X)• Systems complemented satellite navigation services• Systems for Emergency call (eCall)
Communication technologies• GSM (GPRS, EDGE), UMTS, WiMAX, WiFi, Bluetooth, MBWA,
UWB, RFID, DSRC, ZigBee, IR
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DOTEK
Architecture
• Management• Monitoring
– SNR, latency, packet loss
• Decision– price vs. quality
• Handover– L3 instead of L2
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DOTEK
Architecture
• Management• Monitoring
– SNR, latency, packet loss
• Decision– price vs. quality
• Handover– L3 instead of L2
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DOTEK
Architecture
• Management• Monitoring
– SNR, latency, packet loss
• Decision– price vs. quality
• Handover– L3 instead of L2
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DOTEK
• System DOTEK application example
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DOTEK
Pilot implementation of test application
Tab of each test application and
systen status
Tab of the adapter status
File transfer
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DOTEK
Summary
• System sucesfully passed test scenarios for verification its basic functionalities
• Developed software is modular and therefore can be integrated into similar systems
• Software is designed for IPv4 based applications • Can optimize costs of using various technologies and the most
important benefit of this system is in improvement of values of system parameters such as reliability, availability, security, etc.
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DOTEK
Practical demonstration of the DOTEK test application
Than you for attention.
