In 2017, the private network was at a critical turning point. Once considered as two separate tracks—private and public networks—the landscape began to shift dramatically. This year marked the end of the "modulation revolution," a period that saw the gradual phase-out of analog walkie-talkies, which had been the backbone of private network communications for decades. Although they didn't completely disappear from the market, their role was diminishing, and the industry was moving toward broader integration.
On December 12, 2009, the Ministry of Industry and Information Technology issued Notice No. 666, which outlined frequency planning and usage guidelines for special communication devices in the 150MHz and 400MHz bands. This effectively halted the approval of analog walkie-talkies on January 1, 2011, with a five-year transition period. In 2015, this timeline was extended by two more years, pushing the deadline to the end of 2017. That year became the final chapter in the analog era, setting the stage for a new wave of technological convergence.
The core of this transformation was the convergence of broadband and narrowband technologies. As the public network evolved from 3G to 4G LTE, the private network remained largely focused on narrowband digital systems. This gap in technological advancement created a significant disparity between the two sectors. While the public network catered to mass consumer needs, such as video streaming and AI-driven services, the private network prioritized reliable voice communication and stable digital trunking.
However, as society advanced, the demand for broadband applications in the private sector grew. Users wanted not only secure voice communication but also access to high-definition video and real-time data transmission. This was especially true in fields like public security, where the need for clear, real-time visual information became increasingly critical. The development of PDT (Public Digital Trunking) across the country highlighted this trend, with many manufacturers exploring hybrid solutions that combined LTE and narrowband technologies.
Major players like Hytera, Motorola, ZTE, and others began developing integrated systems that could support both broadband and narrowband operations. Experts, including Jiang Qingsheng from the PDT Alliance, emphasized that the future of the public security private network lay in this convergence model. Standards were being developed, and pilot projects were expected to begin in 2018, signaling a new era for the industry.
At the same time, the competition intensified. Traditional private network vendors faced challenges from public network giants who were now entering the space. Companies like Huawei, Hainengda, and ZTE were investing heavily in R&D, aiming to bridge the gap between narrowband and broadband. While the technical barriers to wide and narrow integration were minimal at the core network level, terminal devices still needed improvement, particularly in terms of multi-mode chips that could support both public and private network standards.
This shift brought both opportunities and risks. For large vendors, it meant expanding into new markets and leveraging their existing strengths. For smaller companies, it meant either investing in technology or partnering with larger firms to survive. The market was becoming more competitive, and the threshold for entry was rising, putting pressure on those without strong technical foundations.
Looking ahead, the private network was set for a golden age. With the integration of broadband and narrowband, the industry was poised for growth, innovation, and transformation. Events like the patent disputes between Hainengda and Motorola, or the shifting alliances within the PDT Alliance, illustrated the complexity and dynamism of the sector. 2017 was not just a year of change—it was the beginning of a new chapter in private network evolution.
As the industry moved forward, the focus would remain on convergence, integration, and the ability to meet the evolving needs of users. Whether through technological innovation, strategic partnerships, or regulatory developments, the path ahead promised both challenges and exciting possibilities.
Magnetic Buzzer Self-drive Type
The magnetic buzzers (Self-drive Type) offer optimal
sound and performance for all types of audible alert and identification. Our
magnetic Buzzer solutions are offered with various mounting options. We also
provide you with a washable version for your preferred soldering method. Our magnetic buzzers, also known
as indicators, are designed with an internal drive circuit for easy application
integration. During operation, current is driven through a voice coil to
produce a magnetic field. When a voltage is applied, the coil generates a
magnetic field and then allows the diaphragm to vibrate and produce sound. This
buzzer type has a low operating voltage ranging from 1.5 – 12V+. Our magnetic
buzzers are desirable for applications requiring a lower sound pressure level
(SPL) and frequency.
Passive Buzzer,Dc Magnetic Buzzer,Electro Magnetic Buzzer,Magnetic Buzzer Self Drive Type
Jiangsu Huawha Electronices Co.,Ltd , https://www.hnbuzzer.com