Research on Energy Efficicient Communication Schemes for Wireless Sensor Networks
- 발행기관 GSIS of Ajou University
- 지도교수 Kim, Jae-Hyun
- 발행년도 2005
- 학위수여년월 2005. 8
- 학위명 석사
- 학과 및 전공 국제대학원 전자공학과
- 본문언어 영어
초록/요약
Wireless sensor networking is an emerging technology that has a wide range of potential applications including monitoring, medical systems and robotic exploration. Sensor networks normally consist of a large number of densely deployed distributed nodes that organize themselves into multiple-hop wireless networks. As sensor networks become an integral component of future communication services, energy efficiency will be an important design consideration due to limited battery life of sensor nodes. Since the communication component is a significant consumer of energy, considerable research has been devoted to low-power design of the entire networks protocol stack of sensor networks. This thesis proposed four different energy efficient schemes for sensor networks. First one is topology generation algorithm by using flooding and gossiping methods with some new parameters. In second scheme, we proposed energy efficient algorithm to help routing protocols to increases a network lifetime by fairly distributing the relay load among the nodes with the help of two different operating modes. We proposed an IS-MAC protocol in third scheme that improves the energy efficiency further from S-MAC and T-MAC by redefining the minimum timer period. We also addressed the QoS issues like per-node fairness, channel capacity utilization and latency. Finally IS-MAC based flooding protocol is presented in fourth scheme. All the performance evaluation for each scheme shows that proposed schemes save the energy consumption over existing schemes in given sensor networks.
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Contents
Chapter 1 Introduction = 1
Chapter 2 Topology Generation Algorithm for Sensor Networks = 5
2.1 Introduction = 5
2.2 Motivation and Related Work = 6
2.3 The Proposed Topology Discovery Algorithm = 7
2.3.1 Algorithm = 8
2.3.2 Algorithm Signal Flow = 10
2.4 Performance Metrics = 11
2.4.1 Node degree = 11
2.4.2 Robustness = 11
2.4.3 Latency = 12
2.5 Summary and Future Work = 14
Chapter 3 The Energy-Efficient Algorithm for a Sensor Network = 15
3.1 Introduction = 15
3.2 Motivation and Related Work = 15
3.3 Sensor Networks Model = 17
3.4 Proposed Scheme = 20
3.5 A Node Lifetime Analysis = 22
3.5.1 Multiple Path Analysis = 23
3.5.2 Single Path Analysis = 24
3.6 Numerical Results = 25
3.7 Summary = 29
Chapter 4 Improved Sensor MAC Protocol for a Sensor Network = 30
4.1 Introduction = 30
4.2 Motivation and Related Works = 30
4.3 IS-MAC Protocol = 33
4.3.1 Back-off Time = 35
4.3.2 Optimization for buffer's minimum threshold level = 36
4.4.3 Operation of IS-MAC Protocol = 38
4.4 Performance Analysis = 43
4.4.1 Transmission time = 44
4.4.2 Active time = 47
4.4.3 Control Packet Overhead = 51
4.4.4 Energy Consumption = 52
4.4.5 Channel Utilization Efficiency = 55
4.5 Comparison between S-MAC and IS-MAC = 57
4.6 Summary = 59
Chapter 5 IS-MAC based flooding Protocol for Sensor Networks = 60
5.1 Introduction = 60
5.2 Motivation and Related Works = 61
5.3 The Proposed IS-MAC based Flooding (ISF) Protocol = 63
5.3.1 IS-MAC Background = 63
5.3.2 ISF working = 64
5.3.3 ISF Algorithm = 67
5.4 Performance Evaluation = 70
5.5 Summary = 74
Chapter 6 Conclusions = 75
References = 77
