Article Details

Abstract

To address the communication demands in the emergency communication industry, where private networks feature precise but limited coverage and public networks feature extensive coverage but weak professional scheduling capabilities, this study proposes a converged trunking communication system solution applied to the interconnection between public network POC systems and private network PDT systems. This study elaborates the overall architecture design concept of the system, analyzes the key technologies for realizing interconnection between heterogeneous systems, and sorts out the important service processes between systems, including call setup, call release, floor control, and short message forwarding. This study builds a full-scenario converged communication test environment to conduct multi-dimensional and full-process verification of the basic service and interconnection functions of the system. Verification results show that the proposed converged communication system solution can effectively meet the interconnection requirements between PDT and POC systems, provide stable, efficient, and low-latency communication support for emergency communication scenarios, and adapt to the dual communication demands of daily office work and emergency support in the emergency industry.

Keywords

emergency communication; PDT; POC; converged communication; public and private network interconnection; network isolation

References

1. [1] Wang Wei, Xu Yong, Chen Ye, etc Research on Strategies for Enhancing Emergency Communication Capability [J]. Telecommunications Engineering Technology and Standardization, 2025, 38 (11): 54-58
2. [2] Lun Libao, Zhao Zhiqiang, Xu Congcong, etc Efficient PDT terminal positioning data reporting method [J]. Journal of Jilin University (Information Science Edition), 2021, 39 (4): 376-381
3. [3] Ma Hui, Yuan Rong, Zhao Guochao Application of PDT in Emergency Management Industry [J]. Police Technology, 2021 (4): 15-18
4. [4] Wen Hu, Liu Yidan, Zheng Xuezhao, etc Key Technologies for Emergency Communication Systems under Extreme Conditions [J]. Journal of Xi'an University of Science and Technology, 2025, 45 (2): 224-235
5. [5] Gan Qingyun Research on Security Isolation Gateway [J]. Network Security Technology and Application, 2025 (10): 16-18
6. [6] Wang Huibo, Xu Yong, Wang Huaizhong Research on Intrusion Risk Analysis and Security Enhancement Strategies for Strong Isolation Networks with Dual Unidirectional Network Gates [J]. Information Security and Communication Confidentiality, 2025 (8): 115-133
7. [7] Zhang Ying, Sun Pengfei Comparison of PDT and Tetra business capabilities [J]. Radio Engineering, 2015, 45 (6): 12-15, 91
8. [8] Xie Jun, Gao Lei, Kang Yufei, etc Research on the Deep Application of PDT Fusion Communication [J]. Police Technology, 2024 (2): 29-31
9. [9] Li Jia, Song Delong Research on Wide and Narrow Band Fusion Technology Based on Cluster Private Network [J]. Information and Communication Technology and Policy, 2025, 51 (6): 73-79
10. [10] Zhang Chengzhi, Liu Xiaohui, Luo Yushen, etc Research on the Scheme of Adding GPS Clock Source to TD-LTE System [J]. Railway Communication Signal, 2023, 59 (5): 42-45

About the authors

Yang Xiongrui (1989-), male, Han ethnicity, from Xingtai, Hebei, senior engineer, master's degree, research interests include mobile communication systems; Niu Qingzheng (1990-), male, Han ethnicity, from Hejian, Hebei, engineer, master's degree, research interests include wireless communication systems.