臺灣博碩士論文加值系統

近年來，車載隨意網路安全應用逐漸備受重視，多點傳輸被廣泛應用在交通安全資訊傳輸上。研究的目的是為了在最短的時間內將車禍事故訊息向後方車輛傳送，駕駛者有足夠的時間來做適當的反應。然而，緊急訊息在傳送過程中會因為碰撞而無法順利傳至後方車輛導致封包延遲時間提升。在本篇論文中，我們提出緊急封包傳送機制STAGI。此外，我們不僅使用NS2來模擬車載環境中緊急封包傳輸，也實作Android平台上車載通訊系統，在WAVE/DSRC規格廣泛應用之前替代802.11p車上裝置。我們的系統可使用在Android 2.3版本以上的手持裝置中。實作在手持裝置上車載通訊系統比起其他的方法更為適合。

Vehicular ad-hoc network (VANET) is recently a popular research field in which safety application is very important. Multi-hop broadcast mechanism is widely used in those safety applications. The purpose of this research is to forward the emergent message to the vehicles which have some distance to the accident vehicle as soon as possible. Then the drivers or the vehicles can react to the accident promptly. However, the collision of the emergency or data packets will prolong the process. In this paper, we propose two protocols to reduce the latency of emergent packet; one is BCUnit and the other is STAGI. Besides, we not only simulate the VANET scenario about emergent packet delay with NS2 tools but also we implement the VANET communication system with android platform smart phones in order to substitute 802.11p onboard unit (OBU) before it’s widespread on modern vehicles. And our system can not only be easily install to any android devices (android 2.3 and above) but also more suitable for vehicular ad hoc network (VANET) scenario than other systems.

Contents
致謝 I
中文摘要 II
Abstract III
List of Figures V
List of Tables VI
Chapter 1 Introduction 1
Chapter 2 Background and related work 3
2.1 WAVE/DSRC 3
2.2 e-Call 5
2.3 VANET system without DSRC 9
2.3.1 FM Radio 9
2.3.2 RFID 9
2.3.3 SMS 9
2.3.4 VLC 10
2.4 VANET routing protocol 10
2.4.1 BCUnit 10
2.4.2 BPAB 11
2.4.3 PBCC 13
Chapter 3 Our Approach 14
3.1 VANET routing protocol – STAGI 14
3.2 VANET system with smartphone – OneLife 16
3.2.1 Motivation 17
3.2.2 System functions 20
3.2.3 System Architecture 27
3.2.4 類別圖(Class Diagram) 28
Chapter 4 Experiment setup and result 29
4.1 Experiment setup 29
4.2 Simulation Environment and result 30
Chapter 5 Conclusion 35
Reference 36

List of Figures
Figure 1.Vehicle communication environment 3
Figure 2.e-Call system automatically returns process 6
Figure 3.e-Call system integrated car sensors, achieving automatic report function 6
Figure 4.e-Call system cooperate with IBM, NXP, BMW and other companies to assist in the testing process 7
Figure 5.Three cars were from the Madrid, Athens and Helsinki route trajectories 7
Figure 6.ATOP (Automotive Telematics On-Board Unit Platform) 8
Figure 7.e-Call module 8
Figure 8.Flow chart of BCUnit 11
Figure 9.BPAB mechanism schematic diagram 12
Figure 10. WAVE short messages in the PBCC module. 13
Figure 11.Analyzing the zone where the vehicle’s position (1) 14
Figure 12.Analyzing the zone where the vehicle’s position (2) 15
Figure 13.Flow chart of STAGI mechanism 16
Figure 14.OneLife system main page 17
Figure 15.Login page 20
Figure 16.NFC tag 20
Figure 17.OneLife main page 21
Figure 18.The actual use of the system 21
Figure 19.Friends Internet voice communications page 22
Figure 20.Friends and group management page 22
Figure 21.Text message communications page 23
Figure 22.Track record 24
Figure 23.Live video streaming page 24
Figure 24.Event return page 25
Figure 25.Speed returns page 25
Figure 26.Event notification page 26
Figure 27.Voice returns page 26
Figure 28.OneLife system architecture 27
Figure 29.Class Diagram 28
Figure 30.Simulation environment 29
Figure 31.The environment under static case 31
Figure 32.Result of static case, 100 vehicles on 1.5 Km roadway 31
Figure 33.The simulation environment of Scenario 2 32
Figure 34.The result of Scenario 2 which is 100 vehicles on 1.5 Km roadway 33
Figure 35.The detailed result of Scenario 2 which is 100 vehicles on 1.5 Km roadway 33
Figure 36.The result of Scenario 3 which is 200 vehicles on 2 Km roadway 34

List of Tables
Table 1.DSRC standards in Japan, Europe and America 4
Table 2.2011-2013 Q3 handheld device operation system market share 18
Table 3.2011-2013 Q3 handheld device market share 19
Table 4.Parameter setup 29

[1]World Health Organization, 2nd Global Status Report on Road Safety, 2011.
[2]Kudoh, Y., DSRC standards for multiple applications, In Proceedings of 11th world congress on ITS, 2004.
[3]Eichler, S., "Performance Evaluation of the IEEE 802.11p WAVE Communication Standard," Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th , pp.2199,2203, Sept. 30 2007-Oct. 3 2007.
[4]Morgan, Y.L., "Notes on DSRC & WAVE Standards Suite: Its Architecture, Design, and Characteristics," Communications Surveys & Tutorials, IEEE , vol.12, no.4, pp.504,518, Fourth Quarter 2010.
[5]Kenney, J.B., "Dedicated Short-Range Communications (DSRC) Standards in the United States," Proceedings of the IEEE , vol.99, no.7, pp.1162,1182, July 2011.
[6]Ahmad Rahmati, Lin Zhong, Venu Vasudevan, Jehan Wickramasuriya, Daniel Stewart, Enabling pervasive mobile applications with the FM radio broadcast data system, Proceedings of the Eleventh Workshop on Mobile Computing System & Application HotMobile, pp.78-83, 2010.
[7]Hang Yu, Ahmad Rahmati, Ardalan Amiri Sani, Lin Zhong, Jehan Wickramasuriya, Venu Vasudevan, Data broadcasting using mobile FM radio: design, realization and application, Proceedings of the 13th international conference on Ubiquitous computing UbiComp, pp. 247-256, 2011.
[8]Al Masud, A.; Mondal, M.N.I.; Ahmed, K.M., "Vehicular communication system for vehicle safety using RFID," Communications (MICC), 2009 IEEE 9th Malaysia International Conference on , pp.697,702, 15-17, Dec. 2009
[9]Soichi Kubota, Yoshiharu Okamoto, Hideo Oda, Safety Driving Support System Using RFID for Prevention of Pedestrian-involved Accidents, 6th International Conference on ITS Telecommunications Proceedings, pp.226-229, June 2006.
[10]Sumra, I.A.; Hasbullah, H.; Manan, J.A.; Iftikhar, M.; Ahmad, I.; Alghamdi, A.S., "A novel vehicular SMS system (VSS) approach for Intelligent Transport System (ITS)," ITS Telecommunications (ITST), 2011 11th International Conference on, pp.540,546, 23-25, Aug. 2011.
[11]Cen B. Liu, Bahareh Sadeghi, Edward W. Knightly, Enabling vehicular visible light communication (V2LC) networks, Proceedings of the Eighth ACM international workshop on Vehicular inter-networking VANET, pp. 41-50, sept. 2011.
[12]Kitano, S.; Haruyama, S.; Nakagawa, M., "LED road illumination communications system," Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th , vol.5, pp.3346,3350 Vol.5, 6-9 Oct. 2003
[13]Sze-Yao Ni, Yu-Chee Tseng, Yuh-Shyan Chen, and Jang-Ping Sheu, The Broadcast Strom Problem in a Mobile Ad Hoc Network, MobiCom, Proceedings of the 5th annual ACM/IEEE International Conference on Mobile Computing and Networking, 1999.
[14]Sahoo, J.; Wu, E.; Sahu, P.K.; Gerla, M., "BPAB: Binary Partition Assisted Emergency Broadcast Protocol For Vehicular Ad Hoc Networks," Computer Communications and Networks, 2009. ICCCN 2009. Proceedings of 18th Internatonal Conference on , pp.1,6, 3-6 Aug. 2009
[15]Cheng-Wei Fan; Ke-Chian Su; Hei-Min Wu; Wei-Lin Chang; Yao-Hsin Chou, "An effective multi-hop broadcast control mechanism for emergency alert message in VANET," ITS Telecommunications (ITST), 2012 12th International Conference on, pp.791,795, 5-8 Nov. 2012
[16]Ma Wen; Luo Hanwen, "Simplified Receiver Design for WLAN Systems with Packet Binary Convolutional Coding (PBCC) Transmission," Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on, pp.610,612, 21-25 Sept. 2007
[17]Millennial Media, MOBILE MIX™ 2012 year in review, 2012
[18]Millennial Media, Q2 2013 MOBILE MIX™ REPORT, 2013