*6.2.4 Aggregation network technology*

Aggregation network technology is composed of 5G fused communication terminals and cloud servers. The 2-channel 1920×1080P60 video signals of the endoscope are collected, and 3D signals are synthesized and encoded, and then transmitted through multiple 5G links *via* the aggregation transmission. The cloud server deploys the 5G fused communication system software, which provides the service-side function of heterogeneous multi-link aggregation transmission. In terms of aggregation network technology, the transmission of the surgical endoscope video signal and control signal uses heterogeneous multi-link network aggregation transmission technology to improve transmission efficiency and stability. The control command signal is issued by the main hand, connected to the 5G fused communication gateway next to the main hand through the aggregation link, and the gateway transmits the control signal through the network port to the 5G network for transmission. The cloud server deploys the 5G fused communication system software, which implements the serviceside function of heterogeneous multi-link aggregation transmission in the kernel layer, supporting both uplink and downlink aggregations. Therefore, aggregation network technology has the advantages of signal stability, fast transmission speed, environmental independence, and strong universality, and has good application potential in future remote surgery.
