 |
For real data collection, we positioned the network collector in one model factory, as shown in this page. The network collector collects traffic between the base station gNB and 5GC.
Figure shows the structure of packets collected in the model factory. The source and destination IPs of all packets are the gNB and the 5GC’s IPs, respectively.
The 5G network encapsulates the original source IP and destination IP with a 4-byte tunnel header in the UDP protocol.
The network collector collects traffic between the model factory’s gNB and the 5GC. It is capable of storing the traffic data after removing the tunnel header of the packet.
By eliminating the GTP tunnel header of the collecting packet, the original source IP and the destination IP can be extracted for analyzing network flow.
|
IEEE/ICACT20210225 Slide.10
[Big Slide]