무선 센서 네트워크에서의 에너지 효율적인 MAC 프로토콜에 관한 연구
Research on Energy Efficient MAC Protocols for Wireless Sensor Networks
- 주제(키워드) Wireless Sensor Networks , MAC Protocol , Energy Efficient
- 발행기관 아주대학교
- 지도교수 고영배
- 발행년도 2006
- 학위수여년월 2006. 2
- 학위명 석사
- 학과 및 전공 정보통신전문대학원 정보통신공학과
- 본문언어 영어
초록/요약
This thesis studies the main characteristics of Wireless Sensor Networks (WSN), especially 'the issue of energy efficiency' in the wireless MAC layer, and proposes three new MAC protocols. These are named as TEEM (Traffic aware, Energy Efficient MAC), MAC-CROSS and LE-MAC (Latency and Energy aware MAC) protocols, respectively. The first scheme (TEEM) makes the active duration adaptive by utilizing the two novel approaches of 'adaptive listen period' and 'RTS piggybacking' and hence achieves a significant decrease in power consumption. The second scheme (MAC-CROSS) can solve the 'compulsory wake-up' problem by using a cross-layer concept between MAC and routing layers. Finally, the last scheme (LE-MAC) supports the balance of the energy consumption and data latency in wireless sensor networks. By being studies on NS2 simulation environments and being implemented on real sensor network test-beds with Motes sensors, the proposed three schemes are proved to be improved in terms of energy efficiency.
more목차
CHAPTER 1 INTRODUCTION 1
CHAPTER 2 TEEM: A TRAFFIC-AWARE, ENERGY-EFFICIENT MAC PROTOCOL FOR WIRELESS SENSOR NETWORKS 3
2.1 Introduction 3
2.2 Related Work 4
2.3 PROPOSED SCHEME 8
2.3.1 Traffic Indicator 8
2.3.2 Scheme1: Double-SYNC Time 11
2.3.3 Scheme2: Double-SYNC Contention Window 13
2.3.4 Discussion: Packet Collision 15
2.4 PROPOSED SCHEME 16
2.5 PERFORMANCE EVALUATION 19
2.5.1 Protocol Implementation in MICA 20
2.5.2 Implementation Environment 20
2.5.3 Implementation Results 21
2.6 Simulation Study 25
2.6.1 Simulation Environment 25
2.6.2 Simulation Results 26
2.7 CONCLUSION 34
CHAPTER 3 AN ENERGY EFFICIENT CROSS-LAYER MAC PROTOCOL FOR WIRELESS SENSOR NETWORKS 35
3.1 Introduction 35
3.2 Related Works 37
3.3 The Proposed Scheme: MAC-CROSS 39
3.3.1 The Basic Operation of MAC-CROSS 40
3.3.2 Some Optional Features of the MAC-CROSS 42
3.4 Performance Evaluation 43
3.4.1 Protocol Implementation on Mica Mote 43
3.4.2 Simulation Study 45
3.5 Conclusion 47
CHAPTER 4 A MAC PROTOCOL FOR BALANCING ENERGY-DELAY TRADEOFFS IN WIRELESS SENSOR NETWORKS 48
4.1 Introduction 48
4.2 Related Works 50
4.3 The Proposed MAC protocol 52
4.3.1 Latency and Energy Aware MAC Protocol 52
4.3.2 Latency Analysis 56
4.4 Performance Evaluation 60
4.4.1 Protocol Implementation and Experimental Results 60
4.4.2 A Simulation Model 61
4.4.3 Simulation Results 63
4.5 Conclusion 72
CHAPTER 5 CONCLUSIONS 73
REFERENCES 74
