Base type of the RLC UM entity of one data radio bearer: packages the transmitting and the receiving side (TS 36.322 / 38.322 model an entity per bearer). Created dynamically by BearerManagement, one per (peer, DRB) pair; a bearer with traffic in one direction only simply leaves the other side idle.

This base type binds no TX/RX entity types; the concrete subclasses do (LteRlcUmEntity, NrRlcUmEntity), so it is not instantiable on its own.

Usage diagram

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram

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

Known subclasses

Name	Type	Description
LteRlcUmEntity	compound module	RLC UM entity of an LTE data radio bearer: the RlcUmEntityBase compound with its TX/RX sides bound to the LTE (FI wire format, TS 36.322) entity profiles. Selected by BearerManagement for LTE bearers via its lteRlcUmEntityModuleType parameter, which defaults to this type.
NrRlcUmEntity	compound module	RLC UM entity of an NR data radio bearer: the RlcUmEntityBase compound with its TX/RX sides bound to the NR (SI/SO wire format, TS 38.322) entity profiles. Selected by BearerManagement for NR bearers via its nrRlcUmEntityModuleType parameter.

Parameters

Name	Type	Default value	Description
macModule	string	"^.mac"	This bearer leg's MAC; set per leg by BearerManagement
rlcMuxModule	string	"^.rlcMux"	This bearer leg's RLC mux

Properties

Name	Value	Description
dynamic	true
display	i=block/wheelbarrow

Gates

Name	Direction	Size	Description
upperIn	input		SDUs from PDCP
upperOut	output		Reassembled SDUs to PDCP
lowerIn	input		PDUs from RlcMux
lowerOut	output		PDUs and new-data notifications to RlcMux/MAC
macIn	input		MAC SDU requests via RlcMux

Source code

//
// Base type of the RLC UM entity of one data radio bearer: packages the
// transmitting and the receiving side (TS 36.322 / 38.322 model an entity per
// bearer). Created dynamically by BearerManagement, one per (peer, DRB) pair;
// a bearer with traffic in one direction only simply leaves the other side idle.
//
// This base type binds no TX/RX entity types; the concrete subclasses do
// (~LteRlcUmEntity, ~NrRlcUmEntity), so it is not instantiable on its own.
//
module RlcUmEntityBase
{
    parameters:
        @dynamic(true);
        @display("i=block/wheelbarrow");
        string macModule = default("^.mac");        // This bearer leg's MAC; set per leg by BearerManagement
        string rlcMuxModule = default("^.rlcMux");   // This bearer leg's RLC mux
        *.macModule = default(absPath(this.macModule));
        *.rlcMuxModule = default(absPath(this.rlcMuxModule));
    gates:
        input upperIn;    // SDUs from PDCP
        output upperOut;  // Reassembled SDUs to PDCP
        input lowerIn;    // PDUs from RlcMux
        output lowerOut;  // PDUs and new-data notifications to RlcMux/MAC
        input macIn;      // MAC SDU requests via RlcMux
    submodules:
        tx: <> like IRlcTxEntity {
            @display("p=50,50");
        }
        rx: <> like IRlcRxEntity {
            @display("p=150,50");
        }
    connections:
        upperIn --> { @display("m=n"); } --> tx.in;
        macIn --> { @display("m=s"); } --> tx.macIn;
        tx.out --> { @display("m=s"); } --> lowerOut;
        lowerIn --> { @display("m=s"); } --> rx.in;
        rx.out --> { @display("m=n"); } --> upperOut;
}

File: src/simu5g/stack/rlc/RlcUmEntityBase.ned

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