Packet loss occurs at the WiFi MAC layer

[王小胜]

Hello everyone, I am building the scenario of LTE and wifi aggregation in ns3, I would like to ask me to send LTE packets to wifi through udp sockets, but if the transmission interval is set to be small, such as microseconds(15) in the code, there will be serious packet loss on the wifi side, which causes me to have problems when the PDCP layer is aggregated, as shown in the figure, the last column represents the source of the packets when PDCP is aggregated, and 1 represents the data source from wifi, 0 represents from LTE,

Now it's a 1:1 shunt, the even number represents from wifi, the odd number comes from LTE, and it will be interrupted to 6 Jump directly to 174, but change the sending interval to 10ms and there will be no packet loss, can you help me analyze the reason? Could it be that the buffer on the MAC layer of the wifi is too small? If so, how?