Page 69 - 《橡塑技术与装备》英文版2026年3期

INTELLIGENT AND DIGITAL APPLICATIONS

network upgrades and maintenance, which can lead to short-
term network disruptions or slowdowns, thereby affecting
factory production.
(3) Complete network isolation: It boasts an independent
core network, encompassing comprehensive network elements
such as authentication, billing, account opening, and user plane
management. This ensures that data and signaling remain
within the factory, effectively addressing the cost issue of high
monthly rent for public networks.
(4) Low latency and high reliability: The latency and
packet loss rate are lower than those of traditional wireless
solutions. Moreover, as a kind of mobile communication
system, it supports a comprehensive handover process, with
Figure 1 Typical 5G network equipment topology
the handover latency across cells controlled within tens of
milliseconds, making it more suitable for the operation of AGV supplementation in individual areas. Each BBU can be
forklifts and robots. externally mounted with up to 32 picoRRU. On the other hand,
high-power RRU typically has a transmission power of over
2 5G private network wireless coverage 40W. Depending on the antenna installation height and on-
solution site obstruction conditions, the coverage radius can reach 100
2.1 Hardware solution - 300 meters. Each BBU can be externally mounted with 3 to
The traditional WiFi AP solution, due to its low 4 high-power RRU. These two hardware solutions have their
transmission power, requires the deployment of multiple own advantages and complement each other. Figure 2 shows
points. However, the tire production environment has its own a 5G project for a tire factory undertaken by Xinyuan. The
particularities, such as high temperatures and the presence of outdoor high-power RRU is placed on the roof of the office
conductive carbon black in the air. Some APs with limited building and connected to the communication equipment room
protection levels are prone to malfunction after prolonged via optical cables. The antenna is directly facing the factory
operation. The maintenance and replacement processes often building that needs to be covered. With fewer points, the entire
involve climbing operations, which are cumbersome and production line can be covered, making daily maintenance
increase operational and maintenance costs. simple and eliminating the need for climbing operations.
The transmission power of 5G base station equipment
covers multiple levels, providing a wider range of optional
solutions. For factory coverage, there are currently two base
station solutions: one is the use of BBU + micro-power
picoRRU, and the other is BBU + high-power RRU, as shown
in figure 1.
The transmission power of micro-power picoRRU
typically ranges from 500 mW to 1W, which is not significantly
different from that of Wifi. Depending on the installation
height and on-site obstruction conditions, the coverage radius
is generally between 15 and 30 meters. With its characteristics
of "multiple locations and low power", it is suitable for office Figure 2 5G high-power RRU and directional antenna
buildings, factories with less severe obstruction, and coverage deployed on the rooftop

Vol.52，2026 ·23·