Caltta's Public-Private Network Convergence Solution Supports the 2025 Shenzhen-Hong Kong Marathon

On the morning of February 23, the 2025 Shenzhen-Hong Kong Marathon and the 15th National Games Athletics (Marathon) Test Event opened grandly at the Shenzhen Bay Sports Center. The race, spanning 42.195 kilometers, connects Shenzhen and Hong Kong, with the Shenzhen Bay Bridge as the link.

Communication Coverage for Safety

Shenzhen Zhicheng Communications, as one of the event's communication support units, relies on the 1.4GHz broadband trunking private network in Shenzhen to build the "LTE + eChat" public-private network convergence solution, providing stable and efficient medical communication support throughout the event.

In a marathon, the smoothness of medical communication directly concerns the life safety of the participants. To meet the high specifications and standards of communication support for this event, the "1.4GHz broadband trunking private network + public network" convergence model was adopted, based on the actual network coverage situation, to provide high-reliability wireless broadband communication services to the city's emergency center medical team and the city's radio monitoring station team.

The 1.4GHz broadband trunking private network basically covers the race route, with a focus on critical areas such as medical stations and supply stations. The eChat public network trunking extends coverage to the entire race route, supporting voice, video, location, and real-time data transmission, meeting multi-level communication needs in complex scenarios, ensuring "command visibility and directive reach," thus efficiently coordinating related resources and ensuring the safe and smooth progress of the event.

Solution Advantages

• Public-Private Network Complementarity: The security and reliability of the converged private network and the wide coverage characteristics of the public network.

  
  

• Efficient Interoperability: Supports cross-level command and dispatch, ensuring that emergency instructions reach in milliseconds.

  
  

• Stable and Reliable: Public and private networks serve as backups for each other, ensuring service continuity.

  
  

• Data Closed Loop: Real-time sharing of multimedia information to the command center, with encrypted storage of full-link communication data.

  
  

• Multi-Mode Fusion Terminals: One-click intelligent network switching to reduce the load on frontline personnel.

Before the event, Shenzhen Zhicheng Communications and Caltta formed a technical team to begin comprehensive network assessment work. They conducted detailed checks on wireless base stations, transmission networks, core networks, and other equipment's operational status to ensure smooth network operation. During the competition, real-time dynamic management and control of the network, terminals, and security were carried out through an all-time monitoring system, ensuring zero-failure operation of the system.

Following the 2022 Beijing Winter Olympics, the 1.4GHz broadband trunking private network once again participated in the guarantee of a major test event. As a rehearsal for the communication support of the National Games, this event successfully verified the reliability of Shenzhen's 1.4GHz broadband trunking private network and the maturity of the public-private network convergence solution. In the future, as a leading dmr company, Caltta will continue to focus on innovative technologies to provide efficient and secure communication support for more city-level major events and emergency response scenarios, helping to build a smarter and more digital urban future.