In recent years, with the comprehensive popularization of 4G network coverage, poc radio intercoms based on operators' 4G networks have richer business capabilities than traditional walkie-talkies, and are increasingly favored by professional users. Poc radio intercom has the advantages of wide coverage, multiple business functions, and low threshold of use. In recent years, it has developed rapidly, has a wider application range, and has a larger market scale, whether it is a public cloud operation model market or a private deployment vertical industry major customer Both the market and the business scale of poc radio intercom have seen tremendous growth. According to statistics, domestic poc radio intercom users have reached tens of millions.
The public security industry represented by public security is the largest target market for professional wireless intercom. At present, PDT digital trunking is the main command and dispatch method. As a representative work of the domestic narrowband digital trunking system, PDT has been able to undertake its historical mission in terms of the functional positioning of carrying key voices.
With the continuous strong demands of professional customer command and dispatch for visualization requirements, PDT digital trunking is difficult to bear. The industry has been studying digital trunking systems based on LTE broadband technology for a long time. Among them, the B-TrunC broadband digital trunking system has gradually matured and been applied on a large scale in wireless government affairs, rail transit, airport and port industries.
B-TrunC is also one of the important options for the broadband evolution of public security next-generation digital trunking. However, due to the huge investment in LTE wireless private network, LTE has not yet been widely used in the private network field.
The excessive scale of investment in the construction of private network LTE has formed a strong contradiction with the urgent needs of industry customers for the visualization of command and dispatch. In order to meet the actual needs of industry users and realize under controllable investment, the multimedia digital trunking system based on the poc radio has been well developed in recent years and is increasingly recognized by the industry.
With the breakthrough of key technologies such as the interconnection and intercommunication of poc radio digital trunking and private network digital trunking, one machine with multiple modes, free switching, and voice encryption, poc radio digital trunking has gradually become an important choice for industry users.
Compared with the traditional trunking intercom technology, the poc radio intercom has the biggest advantage in that it utilizes a wide-area coverage communication network, which solves the problems of communication distance, user capacity and dedicated frequency. With the evolution of mobile communication networks, 4G network construction has become popular in China, and 5G technology has also entered the development plan of telecom operators. The wireless transmission bandwidth is rapidly increasing, the transmission delay continues to decrease, and the business capacity that the network can carry is far Far beyond the requirements of voice services. At the same time, the user needs of the industry are constantly changing, and they are becoming less and less satisfied with the convenience of communication brought by voice intercom. They hope to improve the communication and interaction capabilities through more communication capabilities such as voice, message, location, picture, video, and data. Work efficiency. Therefore, broadband poc radio intercom (Broadband PoC, referred to as B-PoC, also known as poc radio broadband multimedia trunking communication system) based on broadband mobile network emerged at the historic moment, and its typical feature is to support visual command and dispatch services. The current broadband service capabilities of various platform systems at home and abroad can be summarized into the following five aspects.
Poc radio intercoms are easily affected by network congestion, and often fail in major security scenarios with large crowds.
With the gradual improvement of operators' 5G network coverage, what changes will happen to poc radio intercom?
The 5G era defines three application scenarios: eMBB (enhanced mobile broadband), uRLLC (high-reliability and low-latency communication), mMTC (large-scale machine-type communication), which has a faster rate, lower power consumption, and shorter Delay, stronger stability, and support for more users, making it an important starting point for the digital transformation of the industry.
mMTC (Massive Machine Communication): Supports massive terminal access. Under 5G networks, there will be no more crowded scenes and network congestion. Ensure that 5G-based poc radio walkie-talkies continue to play a role in major security.
uRLLC (High Reliability and Low Latency Communication): Ultra-low latency features, 5G poc radio intercom access latency and call right application latency are significantly improved, and performance indicators are closer to professional intercom.
eMBB (Enhanced Mobile Broadband): Ultra-high bandwidth, 5G poc radio intercom supports the transmission of high-definition video, which is an impossible capability for PDT digital trunking.
In the 5G era, terminals tend to be intelligent. Based on high bandwidth and low latency, 5G intercom terminals will not only be pure intercoms, but can be based on AI, VR and other technologies to give 5G intercom terminals more functional attributes. It can become a comprehensive command and intelligent workbench for individual combat and assume more business capabilities.