Downlink half of a DC-secondary PDCP relay (see PdcpRelayEntity): receives an already-processed PDCP PDU that the master forwarded over X2 and passes it straight to the local RLC, doing no PDCP processing of its own.

Used in compound modules

Name	Type	Description
PdcpRelayEntity	compound module	Stands in place of the PDCP entity of a data radio bearer at a dual-connectivity SECONDARY node. The bearer's real PDCP entity lives at the master; the secondary only tunnels the already-processed PDUs between the master (over X2, via the DcMux) and its own RLC, doing no PDCP processing of its own. Created dynamically by BearerManagement, one per (UE, DRB) pair, in place of a PdcpEntityBase.

Parameters

Name	Type	Default value	Description
binderModule	string	"binder"

Properties

Name	Value	Description
dynamic	true
display	i=block/layer

Gates

Name	Direction	Size	Description
in	input		From the DcMux (DL PDU tunneled from the master)
out	output		To the local RLC entity

Signals

Name	Type	Unit	Description
sentPacketToLowerLayer
pdcpSduSent

Source code

//
// Downlink half of a DC-secondary PDCP relay (see ~PdcpRelayEntity): receives an
// already-processed PDCP PDU that the master forwarded over X2 and passes it
// straight to the local RLC, doing no PDCP processing of its own.
//
simple PdcpDownlinkRelay
{
    parameters:
        @dynamic(true);
        @display("i=block/layer");
        @signal[sentPacketToLowerLayer];
        @signal[pdcpSduSent];
        string binderModule = default("binder");

    gates:
        input in;    // From the DcMux (DL PDU tunneled from the master)
        output out;  // To the local RLC entity
}

File: src/simu5g/stack/pdcp/PdcpDownlinkRelay.ned

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