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GPRS communication network under environmental monitoring system
With the advancement of science and technology and the continuous development of communication technology, people's living standards are constantly improving, and the pursuit of faster communication network speed has become an enduring focus topic. Finally, after the beginning of 2020, the Internet information era has received new development, and the official arrival of 5G has once again refreshed our understanding of speed.
It took 7 years from 2G to 3G, and 6 years from 3G to 4G. It has been 6 years since China Mobile and China Unicom officially launched 4G in 2014. Now 5G is also The coverage has been officially completed in major cities across the country. Although so much has been said, the environmental monitoring system to be discussed in this article is not only irrelevant to 5G, but even involves the 2G network 20 years ago. Why? Let's take a look with the editor below.
Data transmission of environmental monitoring system
Environmental monitoring system, also known as environmental monitoring information management system (EMIS), is based on computer technology and database technology, and manages a large number of environmental monitoring Information system for information and data storage. Using the environmental monitoring management system can strengthen the processing of environmental factor monitoring data, and can quickly and effectively monitor the environment accurately. The system mainly includes monitoring instrument layer, data acquisition layer, database layer, function module layer and Web interface layer.
Environmental monitoring system is a general term with countless branches such as meteorological monitoring system, dust monitoring system, cold chain monitoring system and smart agricultural monitoring system. Although there are a large number of branch systems, they all have a common purpose, which is to upload the collected data to the terminal in a certain way, and the terminal will analyze and process the data.
There are four types of data upload for the environmental monitoring system: 485 type, analog type, network type (Ethernet, WIFI, GPRS/4G), and wireless type. If no special requirements are made, GPRS/4G is generally used.
GPRS/4G of the environmental monitoring system
4G phase must be familiar to everyone, and GPRS may be a bit scratching.
GPRS: General Packet Radio Service (English: General Packet Radio Service, abbreviation: GPRS) is a mobile data service available to GSM mobile phone users. It is often described as '2.5GIt provides medium-speed data transfer by using the unused TDMA channel in the GSM network.
In short, GPRS is roughly equivalent to a 2G network. We all know that looking at the major operator markets across the country, the withdrawal of 2G and 3G networks is no longer new. On the one hand, 4G network coverage has been perfected to meet the needs of users for communication and Internet access anytime, anywhere. On the other hand, 4G has unparalleled advantages over 2G and 3G, especially to meet the needs of users for network transmission when using high-bandwidth applications. 3G networks, China Mobile, China Telecom, and China Unicom have almost completed the withdrawal of networks across the country, and 2G networks have also completed the withdrawal of China Telecom and China Unicom a long time ago. However, mobile operators still retain 2G networks, and in the next few years, China Mobile does not plan to withdraw 2G networks.
There are many reasons why mobile 2G does not exit the network. First, mobile 2G network is different from 3G. 3G network is only responsible for network signal transmission, and 2G network also has functions such as voice calls. Secondly, the popularity of the network is not as extensive as we imagined. 2G base stations cover a larger area in remote areas, which can ensure that remote areas complete the most basic call functions, so 2G u200bu200bbase stations are also retained. Furthermore, the 2G network is mature enough to handle most jobs that do not require high network speeds, and the signal is stable and the price is cheap.
The use of GPRS as signal transmission in the environmental monitoring system is also based on the above reasons. The environmental monitoring factor data is not huge. Choosing a 2G IoT card is sufficient for data transmission and saving costs; similar to weather monitoring systems, sometimes it needs to be installed in remote areas without supervision. The 2G network signal is stable and can ensure real-time data upload .
Although 5G has been officially commercialized this year and has begun to spread in major cities, in terms of Ru0026D costs and popularization, the environmental monitoring system still needs to be based on GPRS and 4G. Let us look forward to environmental monitoring. The day when the system can popularize 5G!
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