OPNET 중급입문 > 네트워크

Chapter 1 WLAN … 1

1.1 WLAN Example Network ································· 1

1.2 WLAN Mobility with L2 Roaming ························· 8

1.3 WLAN Mobility with MIP ································ 21

1.4 802.11 a/b/g 설정하기 ································· 30

Chapter 2 WiMAX … 41

2.1 WiMAX Example Network ································ 42

2.2 MCS vs. Link Capacity ································· 54

2.3 UGS and BE Connection ································ 59

2.4 MAP Overhead ········································· 68

2.5 ARQ ··················································· 74

2.6 HARQ ·················································· 77

2.7 Handover ·············································· 83

Chapter 3 ZigBee … 99

3.1 Basic ZigBee Example with Star Topology ··············· 99

3.2 Tree Topology Network ································ 104

3.3 Mesh Topology Network ······························· 109

Chapter 4 TCP … 115

4.1 TCP Example Network ································· 115

4.2 TCP Throughput vs. RTT ······························ 122

4.3 TCP Throughput vs. Window Size ······················ 129

4.4 TCP Throughput vs. Error Rate ························ 135

Chapter 5 VoIP Application … 141

5.1 VoIP Example Network ································· 141

5.2 Voice Codec & RTP ··································· 146

5.3 VoIP Throughput vs. Codec ··························· 148

5.4 MOS ·················································· 160

5.5 MOS vs. End‐to‐end delay ····························· 163

5.6 MOS vs. Packet Loss Rate ···························· 168

5.7 MOS vs. Codec ······································· 173

5.8 Voice over WLAN Example Network ···················· 175

Chapter 6 ARQ 예제 … 181

6.1 Stop-and-Wait ········································ 181

6.2 Go-back-N ··········································· 203

6.2.1 설계 및 흐름도 구성··································· 204

6.2.2 Go-back-N ARQ를 위한 패킷 포맷 수정················ 208

6.2.3 Go-back-N ARQ sender 프로세스 모델················· 209

6.2.4 Go-back-N ARQ sender 노드 모델····················· 218

6.2.5 Go-back-N ARQ receiver 프로세스 모델················ 219

6.2.6 Go-back-N ARQ receiver 노드 모델··················· 222

6.2.7 Go-back-N ARQ 동작 검증 시뮬레이션················· 222

6.2.8 Go-back-N ARQ 성능 분석 시뮬레이션················· 224

6.3 Selective Repeat ······································ 228

6.3.1 설계 및 흐름도 구성··································· 229

6.3.2 Selective Repeat ARQ sender 프로세스 모델············ 233

6.3.3 Selective Repeat ARQ sender 노드 모델················ 242

6.3.4 Selective Repeat ARQ receiver 프로세스 모델··········· 243

6.3.5 Selective Repeat ARQ receiver 노드 모델··············· 249

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6.3.6 Selective Repeat ARQ 동작 검증 시뮬레이션············ 250

Chapter 7 HARQ 예제 … 255

7.1 Radio 파이프라인 스테이지 ······························ 255

7.2 Chase HARQ ·········································· 258

7.2.1 harq_sender 프로세스 모델 만들기······················ 259

7.2.2 harq_sender_node 모델 만들기························· 271

7.2.3 harq_rcv 프로세스 모델 만들기························· 273

7.2.4 harq_rcv_node 노드 모델 만들기······················· 280

7.2.5 harq_packet과 harq_ack 패킷 포맷 만들기·············· 282

7.2.6 BER 파이프라인 스테이지 수정························· 284

7.2.7 ECC 파이프라인 스테이지 수정························· 287

7.2.8 네트워크 토폴로지 구성································ 289

Chapter 8 Scheduler 예제 … 295

8.1 Scheduler Example Network ··························· 296

8.1.1 시험망 토폴로지 및 노드 구조 설계······················ 296

8.1.2 프로세스 모델 설계 및 흐름도 구성······················ 299

8.1.3 simple_source 노드 모델······························· 301

8.1.4 scheduler 프로세스 모델······························· 302

8.1.5 scheduler 프로세스 모델······························· 302

8.1.6 multiplexer 노드 모델································· 310

8.1.7 sch_receiver 프로세스 모델····························· 311

8.1.8 demultiplexer 노드 모델······························· 314

8.1.9 sink 노드 모델········································ 315

8.1.10 예제 네트워크 구성 및 시험··························· 316

8.2 Round-Robin 스케줄링 ································· 322

8.2.1 알고리즘 설계 및 구현································· 322

8.2.2 네트워크 구성 및 성능 평가···························· 327

부 록 … 333

부록 A 노드 모델 아이콘 변경 ······························ 333

부록 B 새로운 노드 모델 아이콘 생성 ······················· 335

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부록 C 모델 디렉터리 관리 ································· 339

부록 D 메모리 제약 ········································ 341

부록 E 엑셀에서 결과 그래프 그리기 ························· 343