ns3 Interface between IP and PDCP in Data Plane

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Vikash Kathirvel

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Dec 28, 2017, 6:04:34 AM12/28/17

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Hi All,

I was going through the LTE code and was trying to trace flow from IP to PDCP. I could not understand how an IP packet is delivered to PDCP during Uplink.

From what i saw of the data plane architecture: UE data plane architecture

It seems the LteUeNetdevice sends the packet to LteUeRrc which then forwards it to PDCP.

But from my understanding of LTE architecture, I thought RRC is not involved during Data Plane flows. I thought IP packets would be directly delivered to PDCP,

Can someone please explain how this is being handled in ns3 and point me to the relevant part of the code.