1. Overview of GPRS Remote Time Control

GPRS, known in Chinese as General Packet Radio Service, is a wireless packet-switched technology based on the GSM system, providing end-to-end, wide-area wireless IP connectivity.

GPRS Remote Time Control utilises China Mobile's network to transmit alarm time data. It has become one of the fundamental support platforms across sectors including telecommunications, power supply, broadcasting, scientific research, security monitoring, and industrial control.

The GPRS Remote Time Control System delivers high-precision, all-weather navigation, positioning, and time synchronisation services with outstanding timing performance; it offers high accuracy, low cost, and secure reliability; and provides comprehensive coverage around the clock.

The GPRS Remote Time Control Server is a foundational timing application product developed based on mobile network high-precision positioning and timing modules. It outputs time information formats compliant with user-specified protocols to deliver synchronisation services. GPRS Remote Time Control primarily utilises highly stable frequency information obtained via mobile networks, supplemented by locally recovered, more stable time reference signals.

2. Scope of Application for GPRS Remote Time Control

(1) Various time synchronisation systems acquiring standard time via satellite synchronisation;

(2) Computer networks, computer application systems, and process control management systems;

(3) Time unification systems and various time display screens for power plants (stations) and grid dispatch centres;

(4) E-commerce systems, B2B online systems, and database preservation and maintenance systems;

(5) Fields including factory power systems, finance, mobile communications, petroleum, electricity, transportation, industry, and national defence;

3. Advantages and Disadvantages of GPRS Remote Time Control

Advantages: The GPRS remote time control system offers the benefits of ‘real-time online operation’, ‘high transmission rates’, ‘simple network configuration’, and ‘high-speed data transfer’. Alarm files can be edited online and activated with a single command, enabling nationwide unified time control.

Disadvantages: Signal strength is limited by base station coverage, resulting in weaker reception in areas with poor communication conditions.