무선 스마트 유틸리티 네트워크의 신뢰성, 확장성 및 관리성 향상 연구
Reliability, Scalability, and Manageability Improvement in Wireless Smart Utility Networks
- 주제(키워드) wireless mesh , smart grid network , smart utility network , software defined network , resource constrained network
- 발행기관 아주대학교
- 지도교수 고영배
- 발행년도 2016
- 학위수여년월 2016. 2
- 학위명 박사
- 학과 및 전공 일반대학원 컴퓨터공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000021579
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
This dissertation focuses on the methods of reliability, scalability, and manageability in smart utility networks. Smart Utility Network is a communication infrastructure based on wireless local area communication as IEEE 802.11 (WLAN), IEEE 802.15.4 (WPAN) that is widely considered in smart grid, gas, water and factory services. Especially, to enable cost-effective and flexible last-mail smart meter network, utilization of smart utility network is widely proposed by not only academic but also industrial both and next-generation wireless meters has been developed and investigated. However, WLAN and WPAN protocols may not provide QoS of smart gird service in the large-scale last-mile smart grid network because these protocols are originally designed for local area communication between devices. This dissertation deals with the analysis of current wireless communication and control protocols in smart utility environment and proposes new schemes to overcome scalability problem in large-scale last-mile smart grid network. The proposed schemes can be listed as IEEE 802.11s based layer 2 routing, efficient neighbor discovery in TVWS environment and Software Defined Networking based network management method. The proposed schemes are evaluated via network simulator and test-bed implementation, and results show reduced control message overhead, end-to-end transmission delay and improved end-to-end packet delivery ratio. Especially, the proposed schemes can be interoperable with standard protocols, thus it can be applied to current smart grid network system efficiently.
more목차
CHAPTER 1 INTRODUCTION 1
1.1 Motivation 1
1.2 Contributions of this Dissertation 3
1.3 Overview of the Dissertation 4
CHAPTER 2 BACKGROUND AND RELATED WORK 6
2.1 Introduction of the smart grid system 6
2.2 Taxonomy of the SUN communication technologies for smart grid 9
2.3 Wireless multi-hop infrastructure for smart grid 12
2.3.1 IEEE 802.11s WLAN Mesh Networking 12
2.3.2 IEEE 802.15.4m TVWS Multi-Channel Tree PAN 16
2.4 SDN based network management solution for smart grid 19
2.5 Related Work 21
2.5.1 Enhanced transmission reliability of IEEE 802.11s 21
2.5.2 Enhanced scalability and QoS of IEEE 802.15.4m 22
2.5.3 Enabling SDN for improving manageability of smart grid network 25
CHAPTER 3 PRACTICAL APPROACH TO IMPROVE TRANSMISSION RELIABILITY OF IEEE 802.11S MESH PROTOCOL 28
3.1 Introduction 29
3.2 Problem definition 29
3.2.1 Route fluctuation problems 30
3.2.2 Route recovery failure and packet drop 31
3.3 Proposed architecture: HWMP-RE (Reliability Enhancement) 32
3.3.1 Modified Routing Metric 34
3.3.2 The Route Fluctuation Prevention 36
3.3.3 Multiple route reservation 38
3.3.4 QoS improvement 40
3.4 Performance Evaluation 42
3.5 Chapter Summary 53
CHAPTER 4 EFFICIENT TOPOLOGY CONSTRUCTION AND ROUTING OF THE IEEE 802.15.4M FOR SMART GRID NETWORKS 54
4.1 Introduction 55
4.2 Problem definition 56
4.2.1 Neighbor (Network) Discovery Delay in TVWS 56
4.2.2 Deafness route problem in TMCTP 58
4.3 Proposed scheme: TMTP 59
4.3.1 Preliminaries for the proposed scheme 60
4.3.2 PilotChannel based multiple beacon broadcasting 63
4.3.3 Interleaving-based TVWS-ED channel scanning 66
4.3.4 Link capacity and gateway centric topology construction 70
4.3.5 Light weight multi-channel AMI routing by EB 72
4.4 Performance evaluation 77
4.4.1 Neighbor discovery performance 79
4.4.2 End-to-end hop distance and load-balancing 82
4.4.3 Routing overhead, transmission reliability, and delay 83
4.4.4 Energy efficiency 87
4.5 Chapter Summary 89
CHAPTER 5 SDN-ENABLED SMART GRID NETWORKING 90
5.1 Introduction 91
5.2 Motivation 93
5.2.1 Software-defined networking for smart grid 93
5.3 Proposed architecture: CoAP based SDN architecture 95
5.3.1. System architecture and basic operation 95
5.3.2. Control path construction (for control plane) 97
5.3.3. Deductive database and network graph construction 100
5.3.4. Datalog based CoAP-SDAN application 101
5.4 Performance evaluation 102
5.4.1. Experiment and Simulation results 102
5.4.2. Bandwidth requirements comparison by using testbed experiments between CoAP-SDAN and traditional SDN 104
5.4.3. Large-scale resource constrained AMI network scenario: SDN routing vs. MANET routing protocols 106
5.5 Chapter Summary 109
CHAPTER 6 CONCLUSION 110
