About

 

Peng-Jung (Patrick) Wu, 吳鵬榮

Technical Marketing Manager/Functional Architect at iRONYUN
Email: patrick.wu@ironyun.com
Linkedin Page: Linkedin





News: 

Education and Work: 

  • 2009/8-2010/6, Second Lieutenant, Army, Military Service.
  • 2001/7-2003/7, M.S., Department of Computer Science and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan, Advisor: Prof. Chung-Nan Lee.


Experience:

  • 2010/10/02-2011/10/01, Course Planning Committee Member, Department of Computer Science and Information Engineering, National Formosa University (國立虎尾科技大學資訊工程系)
Teaching JAVA/J2ME/JDBC programming and advising students in commercial system project. To be qualified, each student needs to take 120~135 hours (the whole course is 600 hours in total) of my classes and to finish a commercial system project. I also taught C/C++ programming, ORACLE PL-SQL programming and Wireless 802.11 standards in short-term classes (30 hours per class).
  • 2005/5, Lecturer, Industrial Technology Research Institute (工研院)
Giving a Three-days lecture on embedded system programming using JAVA/J2ME.
  • The only one author of NS2 Scenario Generator (NSG and NSG2)
NSG2 is a WYSIWYG-based tool that helps researchers to generate TCL scenario scripts for NS2. NS2 stands for Network Simulator 2 that is a popular simulation tool in simulating network protocols such as TCP/IP, Multicast, wireless MAC protocols. With NSG2, researchers can easily create large-scale scenarios for NS2. NSG2 is listed in the NS2 official site (NS2 contribution code section).


Thesis:
  • Peng-Jung Wu, "Overcoming Packet Loss in Peer-to-Peer Video Streaming Systems," Ph.D. Dissertation, National Sun Yat-Sen University, July, 2009. (Advisor: Prof. Chung-Nan Lee) (pdf)
Abstract:
As the success of P2P file sharing systems such as BitTorrent and eMule, P2P has become a promising technology to provide video streaming services over the Internet. The P2P technology is shown to be capable of significantly reducing the transmission overhead of video server. However, due to the dynamic nature of peers, a P2P streaming system suffers from bursty packet loss caused by peer departures. Furthermore, as the packet being forwarded peer by peer, the situation becomes worse and worse. This problem is recognized as packet loss accumulation problem. 

To overcome bursty packet loss and eliminate packet loss accumulation problems caused by peer departures in P2P streaming systems, a multi-source structure combining with a distributed FEC scheme for P2P streaming systems is proposed. In the proposed structure, each peer connects to multiple parents according to the pre-specified FEC packets ensemble and each parent forwards partial streaming packets to the peer. If one or few parents fail, other parents can still provide most of remaining part of streaming packets that can be used to recover the missing packets by using packet level FEC scheme. To evaluate the performance of P2P streaming systems using the proposed multi-source structure, we first propose a Continuous-Time Markov Chain to model the arrival/departure behavior of parents in P2P systems. Based on the Markov Chain, we further derived equations to calculate packet loss probabilities for both single-source and multi-source P2P systems. The mathematical analyses show how the packet loss accumulation occurs in P2P systems and how the proposed multi-source structure eliminates packet loss accumulation problem. In addition, simulations are conducted using NS2 to evaluate the proposed multi-source structure. Simulation results verify that the proposed multi-source structure combining with an appropriate FEC protection is capable of overcoming burst packet loss and eliminating packet loss accumulation problems. The simulation results also show that the proposed multi-source structure performs better than the single-source and the PROMISE/CollectCast P2P systems in terms of packet loss, end-to-end delay, and PSNR. A prototype system is implemented to conduct a real experiment over the Internet to validate the effectiveness of the proposed scheme.
  • Peng-Jung Wu, "A Dynamic Bandwidth Borrowing Algorithm for QoS Support in OVSF-CDMA System," Master Dissertation, National Sun Yat-Sen University, Aug. 2003. (Advisor: Prof. Chung-Nan Lee) (pdf)

Honor:

  • Excellent Paper Award, Conference of Computer Vision, Graphics, and Image Processing, 2009
  • Graduate Students Study Abroad Program sponsored by National Science Council, 2008 (NT$600,000)
  • 1st Prize, Taiwan HP Information Appliance Design Contest, 2000 (got NT$200,000 in cash and equipments worth NT$1,000,000), Project Title: Family WAP Assistant

International Academic Activities:

Research projects:

Supporting H.264/SVC Scalable Video Coding in Multi-Source Peer-to-Peer Streaming Systems 

(支援H.264/SVC多層視訊的多來源點對點視訊串流系統)
  • 2006-2007, National Science Council (國科會)

Proxy Cache Optimization for Scalable Video Transmission 

(應用於分層影像傳輸的最佳化快取空間配置)

Supporting Multimedia Streaming in Heterogeneity Peer-to-Peer Network 

(支援多媒體串流的異質性點對點系統)
  • 2005, National Science Council (國科會)

A Coordinated and Distributed Caching Replacement Algorithm for Streaming Media Transcoding Proxy Systems (應用於格式適合化系統之協同與分散式的快取機制)

Material Management and Computer Information System for Shipbuilding Companies 

(中型船廠造船物料管理架構化與電腦化技術)

Implementation of Thickness Information Collection and On-Line Monitor/Control System

(掌上型測厚資料蒐集與線上監診系統開發)
  • 2002, National Science Council/Ching Fu Shipbuilding Company (國科會/慶富造船股份有限公司)

Manufacture Supporting Information System for Shipbuilding Companies 

(中型船廠船舶製程執行期之電腦化管理技術與系統)
  • 2001-2003, National Science Council (國科會)

Intelligent Information Appliance and Wireless Courses Investigation

(智慧資訊家電無線上網創意課程研究)
  • 2001, China Steel Corporation (中鋼公司)

Software Reengineering of an Web Based On-Line Monitor/Control System 

(網際網路型設備監診系統軟體再工程之研究)

Journal papers:

  1. Peng-Jung Wu and Yung-Cheng Kao, "Cloud Resource Management for Surveillance Video Analysis," ICL Technical Journal, vol. 156, pp. 67-74, Apr. 2014. (pdf)
  2. Yung-Cheng Kao, Chung-Nan Lee, Peng-Jung Wu and Hui-Hsiang Kao, "A Network Coding Equivalent Content Distribution Scheme for Efficient Peer-to-Peer Interactive VoD Streaming," IEEE Transactions on Parallel and Distributed Systems, vol. 23, no. 6, pp. 985-994, June 2012. (pdf)
  3. Hui-Hsiang Kao, Peng-Jung Wu and Chung-Nan Lee, "Analysis and Enhancement of Multi-Channel MAC Protocol for Ad-Hoc Networks," International Journal of Communication Systems, vol. 24, no. 3, pp. 310-324, Mar. 2011. (pdf)
  4. Peng-Jung Wu, Jenq-Neng Hwang, Chung-Nan Lee, Chii-Chang Gau and Hui-Hsiang Kao, "Eliminating Packet Loss Accumulation in Peer-to-Peer Streaming Systems," IEEE Transactions on Circuits and Systems for Video Technology, vol. 19, no. 12, pp. 1766-1780,Dec. 2009. (pdf)
  5. Peng-Jung Wu and Chung-Nan Lee, "Connection-Oriented Multi-Channel  MAC Protocol for Ad-Hoc Networks," Computer Communications, vol. 32, no. 1, pp. 169-178, Jan. 2009. (pdf
  6. Peng-Jung Wu and Chung-Nan Lee, "Dynamic Bandwidth Recycle Algorithm for OVSF-CDMA Systems," International Journal of Communication Systems, vol. 19, no. 3, pp. 263-279, Apr. 2006. (pdf)
  7. Ming-Shen Jian, Peng-Long Wu and Chung-Nan Lee, "On-Demand Flow Regulated Routing for Ad Hoc Wireless Networks," Wireless Communications and Mobile Computing Journal (WCMC), vol. 6, no. 4, pp. 401-412, Jun. 2006. (pdf)

Conference papers:

  1. Peng-Jung Wu and Yung-Cheng Kao, "Computing Resource Minimization with Content-aware Workload Estimation in Cloud-based Surveillance Systems," in Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP'14), Florence, Italy, May, 2014.
  2. Yung-Cheng Kao, Chung-Nan Lee, Peng-Jung Wu, and Hui-Hsiang Kao, "Efficient Peer-to-Peer Interactive VoD Streaming using Interleaving Network Coding," in Proceedings of 22th Computer Vision, Graphics, and Image Processing (CVGIP2009), Taiwan, Aug. 2009. (Excellent Paper Award)
  3. Peng-Jung Wu, Jenq-Neng Hwang, Chung-Nan Lee and Yu-Chih Teng, "Receiver Driven Overlap FEC for Scalable Video Coding Extension of the H.264/AVC," IEEE International Symposium on Circuits and Systems (ISCAS'09), pp. 637-640, Taipei, Taiwan, May 2009. (pdf)
  4. Yu-Chih Teng, Peng-Jung Wu and Chung-Nan Lee, "Peer-to-Peer Video-on-Demand Streaming Using Multi-Source Forwarding Scheme," in Proceedings of International Computer Symposium (ICS), Taipei, Taiwan, Nov. 2008. (pdf)
  5. Chun-Hao Chang, Peng-Jung Wu and chung-Nan Lee, "Smart-Fit: Peer-to-Peer Topology Construction Strategy for Live Video Streaming toward Minimal Delay," in Proceedings of International Computer Symposium (ICS), Taipei, Taiwan, Nov. 2008. (pdf)
  6. Peng-Jung Wu, Chung-Nan Lee, Victor Gau, and Jenq-Neng Hwang, "Overcoming Burst Packet Loss in Peer-to-Peer Live Streaming Systems," in Proceedings of IEEE International Symposium on Circuits and Systems (ISCAS'08), Seattle, USA, May, 2008. (pdf)
  7. Victor Gau, Peng-Jung Wu, Chung-Nan Lee, and Jenq-Neng Hwang, "A Scheme for Peer-to-Peer Live Streaming with Multi-Source Multicast and Forward Error Correction," in Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP'08), Las Vegas, USA, Mar., 2008. (pdf)
  8. Peng-Jung Wu, Hui-Hsiang Kao, Chung-Nan Lee and Jenq-Neng Hwang, "Multi-Source Structure in P2P Video Streaming Systems," in Proceedings of 20th Computer Vision, Graphics, and Image Processing (CVGIP2007), Miaoli, Taiwan, Aug. 2007.
  9. Chi-Feng Kao, Chung-Nan Lee, Peng-Jung Wu, and Jia-Yu Wang, "An Efficient Patch Transmission Scheme for P2P Video Streaming," in Proceedings of Internet and Multimedia Systems and Applications, 2007. (pdf)
  10. Peng-Jung Wu and Chung-Nan Lee, "On-Demand Connection-Oriented Multi-Channel MAC Protocol for Ad-Hoc Network," in Proceedings of Third Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON'06), Reston, VA, USA, Sep. 2006. (pdf)
  11. 吳景凱, 陳宏鐘, 蔡志忠, 吳鵬榮, and 鍾依芸, "中型船廠製程設計、管理、與物料資訊整合," 第15屆中國造船暨輪機工程研討會, 高雄市,780-788頁, 2003年3月
  12. Ming-Shen Jian, Peng-Long Wu and Chung-Nan Lee, "On-Demand Flow Regulated Routing for Ad-hoc Wireless Network," in Proceedings of The 5th International Symposium on Wireless Personal Multimedia Communications (WPMC'02), Hawaii, USA, Oct. 2002.
  13. 蔡志忠, 吳景凱, 陳宏鐘, 吳鵬榮, and 鍾依芸, "以作業單元為基礎之船舶製程電腦化管理(I)," 第14屆中國造船暨輪機工程研討會, 基隆市, C21.1-C21.10頁, 2002年1月。
  14. 郭育政, 黃國瑜, 吳鵬榮, 田代潔, and 黃雅琪, "Family WAP Assistant,” in Proceeding of 2001 Workshop on the 21st Century Digital Life and Internet Technologies, Taiwan, May 2001.

Book Chapter:
  1. Victor Gau, Peng-Jung Wu, Yi-Hsien Wang and Jenq-Neng Hwang, "Peer-to-Peer Streaming Systems," in Ubiquitous Multimedia Computing, CRC Press. (link)
  2. 柯志亨, 陳瑞馨, 林政翰, 粱浩銘, 余佳育 and 吳鵬榮, "計算機網路實驗使用NS2模擬多媒體網路通訊與無線網路," 學貫出版社, 2007. (link)