cttc-3gpp-channel-simple-fdm.cc File Reference

Simple frequency division multiplexing example. More...

#include "ns3/antenna-module.h"
#include "ns3/config-store.h"
#include "ns3/core-module.h"
#include "ns3/internet-module.h"
#include "ns3/ipv4-global-routing-helper.h"
#include "ns3/log.h"
#include "ns3/mobility-module.h"
#include "ns3/network-module.h"
#include "ns3/nr-eps-bearer-tag.h"
#include "ns3/nr-helper.h"
#include "ns3/nr-module.h"
#include "ns3/nr-point-to-point-epc-helper.h"
#include "ns3/three-gpp-spectrum-propagation-loss-model.h"

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Functions
void	ConnectPdcpRlcTraces ()
void	RxPdcpPDU (std::string path, uint16_t rnti, uint8_t lcid, uint32_t bytes, uint64_t pdcpDelay)
void	RxRlcPDU (std::string path, uint16_t rnti, uint8_t lcid, uint32_t bytes, uint64_t rlcDelay)
static void	SendPacket (Ptr< NetDevice > device, Address &addr, uint32_t packetSize)

Variables
static int	g_pdcpTraceCallbackCalled
static int	g_rlcTraceCallbackCalled

Detailed Description

Simple frequency division multiplexing example.

This example describes how to setup a simple simulation with the frequency division multiplexing. Simulation example allows configuration of the two bandwidth parts where each is dedicated to different traffic type. The topology is a simple topology that consists of 1 UE and 1 gNB. There is one data bearer active and it will be multiplexed over a one of the two bandwidth parts depending on whether the traffic is configured to be low latency or not. By default the traffic is low latency. So, the example can be run from the command line in the following way:

./ns3 run cttc-3gpp-channel-simple-fdm

or to configure flow as not ultra low latency:

./ns3 run 'cttc-3gpp-channel-simple-fdm –isUll=0'

Variables that are accessible through the command line (e.g. numerology of BWP 1 can be configured by using –numerologyBwp1=4, so if the user would like to specify this parameter the program can be run in the following way:

./ns3 run "cttc-3gpp-channel-simple-fdm --numerologyBwp1=4"

The configured spectrum division is as follows:

--------------------------—Band 1------------------------------— --------------------------—CC1---------------------------------— ---------—BWP1------------—|-----------—BWP2---------------—

Definition in file cttc-3gpp-channel-simple-fdm.cc.

Function Documentation

ConnectPdcpRlcTraces()

void ConnectPdcpRlcTraces

(

)

Function that connects PDCP and RLC traces to the corresponding trace sources.

Definition at line 133 of file cttc-3gpp-channel-simple-fdm.cc.

References RxPdcpPDU(), and RxRlcPDU().

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RxPdcpPDU()

void RxPdcpPDU	(	std::string	path,
		uint16_t	rnti,
		uint8_t	lcid,
		uint32_t	bytes,
		uint64_t	pdcpDelay
	)

Function that prints out PDCP delay. This function is designed as a callback for PDCP trace source.

Parameters

path	The path that matches the trace source
rnti	RNTI of UE
lcid	logical channel id
bytes	PDCP PDU size in bytes
pdcpDelay	PDCP delay

Definition at line 102 of file cttc-3gpp-channel-simple-fdm.cc.

References g_pdcpTraceCallbackCalled.

Referenced by ConnectPdcpRlcTraces().

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RxRlcPDU()

void RxRlcPDU	(	std::string	path,
		uint16_t	rnti,
		uint8_t	lcid,
		uint32_t	bytes,
		uint64_t	rlcDelay
	)

Function that prints out RLC statistics, such as RNTI, lcId, RLC PDU size, delay. This function is designed as a callback for RLC trace source.

Parameters

path	The path that matches the trace source
rnti	RNTI of UE
lcid	logical channel id
bytes	RLC PDU size in bytes
rlcDelay	RLC PDU delay

Definition at line 119 of file cttc-3gpp-channel-simple-fdm.cc.

References g_rlcTraceCallbackCalled.

Referenced by ConnectPdcpRlcTraces().

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SendPacket()

static void SendPacket ( Ptr< NetDevice >  device, Address &  addr, uint32_t  packetSize  )

static

Function creates a single packet and directly calls the function send of a device to send the packet to the destination address.

Parameters

device	Device that will send the packet to the destination address.
addr	Destination address for a packet.
packetSize	The packet size.

Definition at line 75 of file cttc-3gpp-channel-simple-fdm.cc.

Variable Documentation

g_pdcpTraceCallbackCalled

int g_pdcpTraceCallbackCalled

static

Initial value:

=
    false

Global variable used to check if the callback function for PDCP is called and thus to determine if the example is run correctly or not

Definition at line 63 of file cttc-3gpp-channel-simple-fdm.cc.

Referenced by RxPdcpPDU().

g_rlcTraceCallbackCalled

int g_rlcTraceCallbackCalled

static

Initial value:

=
    false

Global variable used to check if the callback function for RLC is called and thus to determine if the example is run correctly or not

Definition at line 60 of file cttc-3gpp-channel-simple-fdm.cc.

Referenced by RxRlcPDU().