LTE-Sim

2014/05/13報告者 - 蘇宏仁

安裝流程• 1. 下載 LTE-SIM– https://code.google.com/p/lte-sim/downloads/list– 目前最新版本為 lte-sim-r5

• 2. 解壓縮

• 3.make

執行指令• . /LTE-Sim Simple• . /LTE-Sim -h

• LTE-Sim is an open source framework to simulate LTE networks.

• Simulate uplink and downlink scheduling strategies in multicell/multiuser environments, taking into account user mobility, radio resource optimization,QoS,handover procedures, frequency reuse techniques, the adaptive modulation and coding module.

SOFTWARE DESIGN

• There are four main components:– 1) the Simulator– 2) the NetworkManager– 3) the FlowsManager– 4) the FrameManager

SOFTWARE DESIGN

SOFTWARE DESIGN

SOFTWARE DESIGN

• Four different traffic generators: • voice over IP (VoIP)• Constant bit rate (CBR) • Infinite buffer• Video

SOFTWARE DESIGN

• PF: It assigns radio resources taking into account both the experienced channel quality and the past user throughput.

• M-LWDF : It supports multiple data users with different QoS requirements.

• EXP : It has been designed to increase the priority of real-time flows with respect to non-real-time ones, where their head-of-line packet delay is very close to the delay threshold.

. /LTE-Sim Simple

• 1) ID = Identifier. It uniquely identifies the packet.

• 2) B = Bearer ID. It identifies the bearer used to map the packet.

• 3) SRC = Source ID. It identifies the node that sends the packet.

. /LTE-Sim Simple

• 4) DST = Destination ID. It identifies the node that receives the packet.

• 5) T = Time. It represents the instant in which the packet is created.

• 6) D = Delay. It represents the delay of the received packet.

• #include " . . / channel /LteChannel.h"• #include " . . / core / spectrum/bandwidth-manager.h"• #include " . . / networkTopology / Cell .h"• #include " . . / core / eventScheduler / simulator.h"• #include " . . / flows / application / InfiniteBuffer.h"• #include " . . / flows /QoS/QoSParameters.h"• #include " . . / componentManagers/FrameManager.h"• #include " . . / componentManagers/FlowsManager.h"• static void SimpleScenario ( )• {• }

Create four basic LTE-Sim components

• Simulator simulator = Simulator::Init( ) ;• FrameManager frameManager = FrameManager::Init( ) ;• NetworkManager networkManager = NetworkManager::Init( ) ;• FlowsManager flowsManager = FlowsManager::Init( ) ;

Create Channels and Spectrum• LteChannel dlCh = new LteChannel ( ) ;• LteChannel ulCh = new LteChannel ( ) ;• BandwidthManager spectrum = new BandwidthManager ( 5 , 5 , 0 , 0 ) ;

Create an LTE cell• int idCell = 0 ;• int radius = 1 ; //km• int minDistance = 0 .0035 ; //km• int posX = 0 ;• int posY = 0 ;• Cell* cell = networkManager->CreateCell (• idCell , radius , minDistance , posX , posY );

Create network elements (eNB, GW, and UE)

• //Create ENodeB• int idEnb = 1 ;• ENodeB enb = networkManager->CreateEnodeb (• idEnb , cell , posX , posY , dlCh , ulCh , spectrum ) ;• Enb->SetDLScheduler(ENodeB::DLScheduler_TYPE_PROPORTIONAL_FAIR )

;• //Create GW• Gateway gw = networkManager->CreateGateway ( ) ;

• //Create UE• int idUe = 2 ;• int posX_ue = 4 0 ; //m• int posY_ue = 0 ; //m• int speed = 3 ; //km/h• double speeDirection = 0 ;• UserEquipment ue = networkManager->CreateUserEquipment (• idUe , posX_ue , posY_ue , speed , speeDirection , cell , enb ) ;

Create an Infinite Buffer Application

• QoSParameters qos = new QoSParameters ( ) ;• int applicationID = 0 ;• int srcPort = 0 ;• int dstPort = 100;• int startTime = 1 0 ; // s• int stopTime = 3 0 ; // s• Application* be = flowsManager->CreateApplication (• applicationID ,gw, ue ,srcPort , dstPort , TransportProtocol::TRANSPORT_

PROTOCOL_TYPE_UDP ,Application::APPLICATION_TYPE_INFINITE_BUFFER , qos , startTime , stopTime ) ;

• //Define the duration of the simulation.• simulator->SetStop ( 6 0 ) ;• //Call the Simulator::Run() function to start the simulation.• simulator->Run ( ) ;