Business

Digital Radio Communication System Solution

Digital Radio Communication is the solution for providing reliable and stable radio communication services in Public Safety and Security area, Railway area, Subway area, Airport area, Plant area and etc. which voice/data communications are required in order to cope rapidly with the emergency situation with its establishment of system which the standardized technology is applied.
On the base of knowhow of employed engineers who served for a long time in the consultancy part, installation part and maintenance part of radio communication network, and technical skills of R&D engineers, SMEC will provide the RF Engineering Services for radio communication network, procurement of system/installation, RF optimization service. And we will realize the customer satisfaction with the follow up management throughout the professional engineers.

Solution

Digital TETRA TRS
- - Switching & Management Infrastructure
- - Base Station Equipment
- - Radio Terminals
- - Gateway Terminals
Digital Mobile Radio
- - Tier -Ⅰ
- - Tier - Ⅱ
- - Tier - Ⅲ

Application Area

Network Configuration

The Competitiveness of Digital Radio Communication Part

Knowhow as the Professional Communication Company at wired/wireless over 20 years.
Employment of professional Engineers who served over 10 years in radio communication part.
Accumulated experiences and career of employed engineers[Radio Communication Projects in Public Safety & Security/ Railway & Subway area]
R&D capability and the patent rights of Radio communication equipment.

Characters & Specifications

Descriptions	TETRA TRS	Digital Mobile Radio
Standard	ETSI(European Telecommunications Standard Institute)	ETSI(European Telecommunications Standard Institute)
Access Method	4- TDMA	2-TDMA
Bandwidth	25kHz	12.5kHz
Frequency Range	380 – 400MHz 430 – 470MHz 800MHz	136 – 174MHz 350 – 400MHz 400 – 470MHz
Modulation	π/4 DQPSK	4FSK
Voice Coding	ACELP	SELP
Encryption	AIE, E2EE	AES, E2EE
Data Throughput	Max. 28.8Kbps	Max.9600bps
Service	Group/Individual Call Telephone Connection Call Emergency Call Call set-up time:0.3sec DGNA Max. 40W Output(Base station)Priority Call Pre-Emption Ambient Listening Status Message Text Message Packet Data Service	Group/Individual Call Telephone Connection Call Emergency Call Call set-up time:0.3sec Max. 40W Output(Base station)Priority Call Pre-Emption Status Message Text Message Packet Data Service Tier-1, 2, 3
Application Area	Public Safety Transportation(Railway, Subway, Airport) Plant(Oil, Gas, Electric PowerIT)	Public Safety Transportation(Railway, Subway, Airport) Small Businesses (Distribution, Factory)