Developed by the China Communications Standards Association (CCSA) and approved by China's Ministry of Industry and Information Technology, the standard was created to address evolving needs driven by the emergence of new services, such as video, imaging, and high-speed data transmission. Traditional narrowband trunking can no longer provide the bandwidth to support these services.
B-TrunC is compatible with various bandwidth providers, ranging from 1.4 MHz to 20 MHz, and provides the core features of LTE. B-TrunC supports one-to-many voice and one-to-many video calls, enhancing the new one-to-many transmission mechanism in its radio interface. Mission-critical communications are essential for rapid response times, ensuring the safety and stability of communities, fire services, public health, national security, and the economy. Recognizing and understanding this need, the B-TrunC standard was developed to enable mission-critical communications for PPDR operations.
The development and internationalization of the B-TrunC standard
The development of the B-TrunC standard to support various trunking services began in November 2012 and was carried out through the CCSA. The interfaces defined in the standard are designed to cover the LTE carrier and service layers. It provides enhanced broadband trunking for services such as group voice calls, group video calls, private video calls, real-time short data, text messaging, group leisure call release, dynamic regrouping, remote permission and disabling terminals, forced release or interruption, fault recovery, as well as improved service security, prioritization, and network reliability.
Since November 2013, the CCSA has submitted documents to ITU-R Working Party 5A (WP 5A) to present and provide updates on the development of the B-TrunC standard. Huawei was invited to speak on behalf of the CCSA and worked with the Chinese delegation to promote the B-TrunC standards among administrators and organizations worldwide.
On May 27, 2014, the CCSA established the B-TrunC Industrial Alliance to promote the internationalization and industrialization of LTE broadband trunking. As a major contributor to the development of the B-TrunC standard, Huawei was selected as a core member of the alliance.
The B-TrunC standard drives the development of the broadband trunking industry
The standard has established a solid foundation for the development of LTE-based broadband trunking products and solutions that address the diverse needs of various industries. Standardized components facilitate interoperability of equipment and systems from different vendors. Furthermore, it supports solution integration to help protect business investments.
Huawei has been developing products and solutions compatible with the B-TrunC standard since 2013. These products and solutions have been deployed across China by the Nanjing Government, Tianjin Government, and the Lijiang Police, as well as in other markets for the Ghanaian Government's National Security Network and the Kenyan police force. At the Nanjing Youth Olympic Games in August 2014, Huawei's enterprise LTE broadband trunking solution (eLTE) was used to provide efficient PPDR communication services, contributing to a greener, safer, smarter, and more effective event. This marked the first time that 4G LTE multimedia broadband trunking technology had been applied at a large-scale sporting event.
The internationalization of the B-TrunC standard not only demonstrates that the broadband trunking industry is on the right track, but also serves to further accelerate its development. As an international standard, B-TrunC will help expedite the commercialization of the entire LTE broadband trunking industry value chain. It supports the development and testing processes of equipment suppliers, device manufacturers, integrators, and customers by providing a unified trunking standard. This will ultimately accelerate development within the ICT industry and pave the way for next-generation trunking products in the future.
