NrPdcpTxEntity

simple module

Handles the operations related to the NR PDCP (Packet Data Convergence Protocol) layer at the transmitting side of a specific connection. It extends the LtePdcpTxEntity module with the NR flavor of the per-SDU statistics (pdcpSduSentNr) and the NR-leg id mapping of a single-leg NR bearer. On a multi-leg bearer, leg dispatch, id mapping and per-leg statistics are handled by the enclosing compound's splitter instead (see PdcpEntityBase).

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
LtePdcpTxEntity	simple module	Handles operations related to the LTE PDCP (Packet Data Convergence Protocol) layer on the transmitting side of a specific connection. This module manages the creation, sequencing, header compression, and metadata association for PDCP PDUs before they are passed down to the RLC layer.

Parameters

Name	Type	Default value	Description
binderModule	string	"binder"
emitPerSduSignals	bool	true	Cleared by a PdcpEntityBase with a splitter: the splitter emits the per-leg statistics
rohcProfiles	string	""	The bearer's ROHC profiles, space-separated, pushed by RRC; "" = no header compression
rohcFoHeaderSizes	object	{rtp: 6, udp: 6, tcp: 9, ip: 4}	Compressed header size per ROHC profile in the FO state, in bytes
rohcSoHeaderSizes	object	{rtp: 3, udp: 3, tcp: 5, ip: 1}	Compressed header size per ROHC profile in the SO state, in bytes
rohcIrOverhead	int	3B	Size of an IR packet's ROHC fields (packet type, profile, CRC) on top of the full headers
rohcIrPackets	int	3	IR packets a context sends before moving to FO
rohcFoPackets	int	3	FO packets a context sends before moving to SO
rohcIrRefresh	int	1700	Packets of a context between two IR refreshes
rohcFoRefresh	int	700	SO packets of a context between two FO refreshes
rlcMode	string	"UM"	RLC mode of this bearer, pushed by RRC; determines the PDCP header size

Properties

Name	Value	Description
dynamic	true
display	i=block/layer
class	NrPdcpTxEntity

Gates

Name	Direction	Size	Description
in	input
out	output

Signals

Name	Type	Unit	Description
receivedPacketFromUpperLayer
sentPacketToLowerLayer
pdcpSduSent
pdcpSduSentNr

Source code

//
// Handles the operations related to the NR PDCP (Packet Data Convergence Protocol)
// layer at the transmitting side of a specific connection. It extends the
// ~LtePdcpTxEntity module with the NR flavor of the per-SDU statistics
// (pdcpSduSentNr) and the NR-leg id mapping of a single-leg NR bearer. On a
// multi-leg bearer, leg dispatch, id mapping and per-leg statistics are handled
// by the enclosing compound's splitter instead (see ~PdcpEntityBase).
//
simple NrPdcpTxEntity extends LtePdcpTxEntity
{
    parameters:
        @dynamic(true);
        @class("NrPdcpTxEntity");
        @display("i=block/layer");
        @signal[pdcpSduSentNr];
}

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