The three core elements of 5G architecture transformation: the widespread adoption of C-RAN architecture, the need for new transmission technologies for fronthaul, and the AAS active antenna system. In addition, the C-RAN architecture change itself also brings more 5G features. For example, after the popularization of C-RAN, mobile edge computing (MEC) will become feasible: put the servers and storage in the data center next to the BBU pool. It can realize local content caching and further reduce network delay. SDN (Software Defined Networking) and NFV (Network Function Virtualization) are also important components of the flexibility of providing edge computing services for operators. These may even change the role relationship between operators and cloud service providers.

So many new changes are challenges and opportunities for participants at all levels of 5G infrastructure, including power supply and cooling solutions. For example, the most difficult high-efficiency power amplifier, small-size filter, high-precision ADC/DAC and so on in active antenna systems. For QM Connec Tor electronic connector manufacturer in terms of this nature put forward higher requirements.

For example, the layout of the AAS components in a cellular base station is inseparable from antenna boards, electronic component boards and filters. Complementary systems in dense residential areas require a large number of antennas to support MU-MIMO. Since it is equipped with control electronics, new connectivity solutions are needed. Especially 6GHz and higher frequency networks require highly integrated systems, in which radio frequency integrated circuits usually integrate antennas on the upper surface of the chipset. High-speed I/O interfaces are required both internally and externally in AAS; the system may include power, optical fiber and hybrid interfaces; in addition to interconnecting devices and sensors, silicon crystals, duplexers and oscillators must also be considered.

"The internal connection of the RF（radio frequency）unit must be able to handle high-speed, high-power signals, and meet more stringent requirements for electromagnetic interference, signal integrity, and heat dissipation. Moreover, the connector must be small enough to meet AAS's overall size requirements. In addition, the antenna The number of components is huge, and a large number of connections are required between components. How to control the overall cost and the operability during the connector installation process are also very important."