Cellular networks are changing and some are dying. At the recent 11th Global Mobile Broadband Forum (MBBF), Miao Shouye, leader of China Unicom’s 5G co-construction and sharing working group, revealed the latest clear incident of China Unicom’s 2G network withdrawal. 2G will be completely withdrawn from the network by the end of 2021 at the earliest! With China Unicom’s limited financial resources, the country has put forward rigid requirements for building 5G. With the huge investment in 5G construction, it is impossible to maintain four 2/ 3/4/5G networks at the same time for a long time. Killing 2G, using WCDMA and VoLTE as the basic network, and promoting the construction of 5G is not only a wise choice for China Unicom, but also a necessary decision for the country to promote the development direction of the Internet of Things, artificial intelligence, and blockchain.
After GPRS is withdrawn from the network, what options do we have when using the cellular network?
5G network
5G wireless technology is designed to deliver higher multi-Gbps peak data speeds, ultra-low latency, higher reliability, massive network capacity, higher availability, and a more unified user experience to more users. Higher performance and greater efficiency empower new user experiences and connect new industries.
5G Gigabit industrial wireless router supports NSA and SA dual-mode 5G networks, is backward compatible with 4G/3G networks, and covers all operator network standards; has 4 Gigabit network ports, supports multiple VPN protocols, and has an M2M remote management platform, can be seamlessly connected to various industrial IoT applications; suitable for remote monitoring, remote management, data transmission and other applications, with the characteristics of high speed and low latency.
Features of 5G industrial router USR-G810:
● High-speed, low-latency 5G networks of the three major operators
● 4 Gigabit network ports and 6 high-gain cellular antennas
● Dual-band WiFi, wireless speed up to 1200Mbps
● Industrial design, 7*24h stable operation
●Mainstream VPN, data encryption is more secure
● Industrial Internet of Things, 5G applications are more widespread
4G network
The 4G cellular network standard was released in the late 2000s and is 500 times faster than 3G. It can support high-definition mobile TV playback and video data transmission. The maximum speed may be 10s mbps when the device is moving and 100s mbps when the device is stationary. The peak capacity of a 20MHz bandwidth sector is 400Mbps. However, since users are sharing the available sector capacity, the user-observable speed experience is typically in the range of 10s -100s mbps.
At the beginning of the establishment of 5G, products based on 4G networks are still the mainstream market. For example, 4G DTU, 4G industrial routers, 4G modules and other communication transmission equipment.
4G Industrial Router or DTU Features:
Reliable networking and communication: It adopts high-performance industrial-grade 4G wireless modules, industrial-grade high-stability and high-precision components, and wide-temperature and wide-voltage industrial design to adapt the equipment to high-temperature and cold working environments, providing reliable networking and stable communication for unattended systems. .
Improved data processing and transmission speed: It uses a high-performance MIPS core and provides a large memory cache (FLASH-128Mbits, DDR2-1Gbits). It has strong and excellent performance and meets the performance requirements of large-volume data transmission applications such as pictures and videos.
Powerful WIFI: Dual Wi-Fi antennas have stronger signals, support 802.11b/g/n and up to 24 wireless STA connections, automatic and manual channel selection, and the wifi signal supports WPA/WPA2, WEP and other encryption methods, and the wifi signal is secure Stablize.
4G wireless transmission terminals are widely used in industrial monitoring, security monitoring, intelligent transportation, vehicle monitoring, financial data transmission, smart power, water conservancy industry, environmental protection wireless monitoring and other application scenarios.
Cat-1 network
Cat is the abbreviation of the English word Category. Category means category and type. Cat.X” refers to the user terminal category under the LTE network.
In fact, in the very early standards of 3GPP LTE, the EUTRAN specification (3GPP Release 8) included a device called Category 1 (Cat-1). The design of this device is very simple and very power-saving. Its rate is the highest. Can only reach 10Mbps. To reduce complexity, Cat-1 is the only device type that can use a single antenna in 2008, which means it does not support MIMO (Multiple Input Multiple Output).
With 2G withdrawing from the network and 4G and 5G having higher tariffs, Cat-1 provides a new solution for medium and low-speed IoT communications. In terms of speed, it can achieve 10M download and 5M upload; the delay can support 4G bearer , millisecond-level delay, and Cat-1 equipment can be used in environments with 4G base stations. It also supports GPRS/Cat-1 dual protection and realizes seamless switching of encapsulation.
What are the characteristics of Cat-1
● Total bandwidth required: 20MHz
● Peak download rate: 10Mbps
● Peak upload rate: 5Mbps
● Power requirements: low
● Duplex mode: full duplex
● Transmit power level: 23dBm
NB-IoT network
Narrowband IoT (NB-IoT) is a new rapidly developing wireless technology 3GPP cellular technology standard introduced in version 13, designed to meet the LPWAN (Low Power Wide Area Network) requirements of the Internet of Things.
It has been classified as a 5G technology, standardized by 3GPP in 2016.
It is quickly becoming the best-in-class LPWAN technology to support a variety of new IIoT devices, including smart parking, utilities, wearables and industrial solutions.
The characteristics of NB-IoT are:
● Excellent indoor coverage
● Support a large number of connections,
● cost-effective,
●The device has low power consumption
● Optimized network architecture.
3G network
3G network is the third generation of mobile communication technology, with a rate generally above several hundred kbps. He is also an old friend of ours. After GPRS is gradually withdrawn from the network, 3G is used as the basic network. It can support voice data transmission, but cannot support video data transmission or smooth playback. With the development of digital communication technology, 3G will gradually be replaced by faster networks soon after GPRS is withdrawn from the network.
Keywords: serial port control module