NR (TS 38.322) receiving side of the Unacknowledged Mode (UM) of the RLC layer: SI + byte-offset (SO) reassembly with a per-SDU SN window and a t-Reassembly timer. Shares the common RlcUmRxEntityBase shell with the LTE profile LteRlcUmRxEntity. Bound by default inside the NrRlcUmEntity compound. The NR SO-reassembly statistics are declared here so they are recorded only for NR entities.

Inheritance diagram

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

Known subclasses

Name	Type	Description
NrRlcUmRxEntityD2D	simple module	D2D-capable NR (TS 38.322) RLC UM receiving entity: NrRlcUmRxEntity plus the mode-switch buffer discard/renumbering and the D2D branch of the throughput/delay statistics.

Parameters

Name	Type	Default value	Description
macModule	string	"^.^.mac"	Set by the enclosing RlcUmEntityBase compound (per leg)
rlcMuxModule	string	"^.^.rlcMux"	This bearer's leg mux; set by the RlcUmEntityBase compound
UM_Window_Size	int	2048	SDU reassembly window: 2048 (12-bit SN) or 32 (6-bit SN)
t_Reassembly	double	80ms

Properties

Name	Value	Description
dynamic	true
display	i=block/layer

Gates

Name	Direction	Size	Description
in	input		PDUs from MAC, via the RlcMux
out	output		Reassembled SDUs to the PDCP layer (direct per-DRB connection, not via a mux)

Signals

Name	Type	Unit	Description
receivedPacketFromLowerLayer
sentPacketToUpperLayer
rlcDelayDl
rlcThroughputDl
rlcDelayUl
rlcThroughputUl
rlcPduDelayDl
rlcPduThroughputDl
rlcPduDelayUl
rlcPduThroughputUl

Statistics

Name	Title	Source	Record	Unit	Interpolation Mode	Description
receivedPacketFromLowerLayer		receivedPacketFromLowerLayer	count, sum(packetBytes), vector(packetBytes)		none
sentPacketToUpperLayer		sentPacketToUpperLayer	count, sum(packetBytes), vector(packetBytes)		none
rlcDelayDl	Delay at the rlc layer DL	rlcDelayDl	mean	s
rlcThroughputDl	Throughput at the rlc layer DL	rlcThroughputDl	simu5g_rateavg	Bps
rlcDelayUl	Delay at the rlc layer UL	rlcDelayUl	mean	s
rlcThroughputUl	Throughput at the rlc layer UL	rlcThroughputUl	simu5g_rateavg	Bps
rlcPduDelayDl	PDU delay at the rlc layer DL	rlcPduDelayDl	mean	s
rlcPduThroughputDl	PDU throughput at the rlc layer DL	rlcPduThroughputDl	simu5g_rateavg	Bps
rlcPduDelayUl	PDU delay at the rlc layer UL	rlcPduDelayUl	mean	s
rlcPduThroughputUl	PDU throughput at the rlc layer UL	rlcPduThroughputUl	simu5g_rateavg	Bps

Source code

//
// NR (TS 38.322) receiving side of the Unacknowledged Mode (UM) of the RLC
// layer: SI + byte-offset (SO) reassembly with a per-SDU SN window and a
// t-Reassembly timer. Shares the common RlcUmRxEntityBase shell with the LTE
// profile ~LteRlcUmRxEntity. Bound by default inside the ~NrRlcUmEntity
// compound. The NR SO-reassembly statistics are declared here so they are
// recorded only for NR entities.
//
simple NrRlcUmRxEntity like simu5g.stack.rlc.IRlcRxEntity
{
    parameters:
        @dynamic(true);
        @display("i=block/layer");
        string macModule = default("^.^.mac");  // Set by the enclosing RlcUmEntityBase compound (per leg)
        string rlcMuxModule = default("^.^.rlcMux");  // This bearer's leg mux; set by the RlcUmEntityBase compound
        int UM_Window_Size = default(2048);     // SDU reassembly window: 2048 (12-bit SN) or 32 (6-bit SN)
        double t_Reassembly @unit(s) = default(80ms);

        @signal[receivedPacketFromLowerLayer];
        @statistic[receivedPacketFromLowerLayer](source="receivedPacketFromLowerLayer"; record=count,"sum(packetBytes)","vector(packetBytes)"; interpolationmode=none);
        @signal[sentPacketToUpperLayer];
        @statistic[sentPacketToUpperLayer](source="sentPacketToUpperLayer"; record=count,"sum(packetBytes)","vector(packetBytes)"; interpolationmode=none);


        //# Per-bearer statistics. A bearer serves one peer, so these are already
        //# per-UE; aggregate over a UE's bearers in the analysis tool.
        @signal[rlcDelayDl];
        @statistic[rlcDelayDl](title="Delay at the rlc layer DL"; unit="s"; source="rlcDelayDl"; record=mean);
        @signal[rlcThroughputDl];
        @statistic[rlcThroughputDl](title="Throughput at the rlc layer DL"; unit="Bps"; source="rlcThroughputDl"; record=simu5g_rateavg);
        @signal[rlcDelayUl];
        @statistic[rlcDelayUl](title="Delay at the rlc layer UL"; unit="s"; source="rlcDelayUl"; record=mean);
        @signal[rlcThroughputUl];
        @statistic[rlcThroughputUl](title="Throughput at the rlc layer UL"; unit="Bps"; source="rlcThroughputUl"; record=simu5g_rateavg);
        @signal[rlcPduDelayDl];
        @statistic[rlcPduDelayDl](title="PDU delay at the rlc layer DL"; unit="s"; source="rlcPduDelayDl"; record=mean);
        @signal[rlcPduThroughputDl];
        @statistic[rlcPduThroughputDl](title="PDU throughput at the rlc layer DL"; unit="Bps"; source="rlcPduThroughputDl"; record=simu5g_rateavg);
        @signal[rlcPduDelayUl];
        @statistic[rlcPduDelayUl](title="PDU delay at the rlc layer UL"; unit="s"; source="rlcPduDelayUl"; record=mean);
        @signal[rlcPduThroughputUl];
        @statistic[rlcPduThroughputUl](title="PDU throughput at the rlc layer UL"; unit="Bps"; source="rlcPduThroughputUl"; record=simu5g_rateavg);

    gates:
        input in;       // PDUs from MAC, via the RlcMux
        output out;     // Reassembled SDUs to the PDCP layer (direct per-DRB connection, not via a mux)
}

File: src/simu5g/stack/rlc/um/NrRlcUmRxEntity.ned

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