Associate Professor
Intelligent Mobile Service Laboratory (IMS Lab)
Department of Computer Science and Information Engineering
National Cheng Kung University
E-mail: tsaimhcsie.ncku.edu.tw
Tel: +886-6-2757575 ext. 62518


  • 2004 ~ 2009: Ph.D., Computer Science, National Chiao Tung University
  • 2002 ~ 2004: M.S., Computer Science & Information Engineering, National Chiao Tung University
  • 1998 ~ 2002: B.S., Computer Science & Information Engineering, National Chiao Tung University
  • Software Defined Network (SDN)/Network Function Virtualization (NFV) Core Network (graduate; 2015 Fall)
  • Mobile Network and Service (graduate; 2010 Fall, 2011 Fall, 2012 Fall, 2013 Fall, 2014 Fall, 2015 Fall, 2016 Fall, 2017 Fall)
  • Computer System and Network Administration (graduate; 2012 Fall, 2013 Fall, 2014 Fall, 2016 Fall)
  • Program Design (2) (undergraduate; 2011 Spring, 2012 Spring, 2013 Spring, 2014 Spring, 2015 Spring, 2016 Spring, 2017 Spring)
  • Advanced Competitive Programming (graduate; 2017 Spring)
  • Service Study (3) (undergraduate; 2013 Fall, 2016 Spring)
  • Competitive Programming (undergraduate; 2013 Spring, 2015 Spring)
  • Competitive Algorithm Design and Practice (undergraduate; 2014 Spring, 2016 Spring)
  • Service Study (1) (undergraduate; 2012 Fall)
  • Next Generation Mobile Network (graduate; 2011 Spring, 2012 Spring)
  • Network and Information Technology (undergraduate, general education; 2011 Spring, 2015 Spring)
  • Internet of Things (IoT)
  • Software Defined Network (SDN)
  • Design and Analysis of Mobile Network (GSM/UMTS/LTE/LTE-A)
  • Performance Evaluation
  • Voice over IP (VoIP) Network
  • Visiting Scholar in USC, Los Angeles, U.S.A., July 20012 to September 2012
  • Summer Intern in IBM, Taipei, July 2008 to December 2008
  • Summer Intern in Otto-von-Guericke-University Magdeburg, Germany, July 2006 to September 2006
  • 2017, Yun-Zhan Cai (蔡昀展), College Student Research Award, Ministry of Science and Technology, Taiwan. (科技部大專生計畫研究創作獎: 以OpenFlow為基礎之視覺化網路即時路況監測)
  • 2017, Chia-Ying Lin (林佳瑩), GHC Scholarship (with invitation to attend Grace Hopper Celebration of Women in Computing)
  • 2017, Chun-Chi Fang (方鈞麒), College Student Participation in Research Projects, Ministry of Science and Technology, Taiwan. (科技部大專生計畫: 基於SDN之網路服務品質優化機制)
  • 2017, Shang-Lin Lu (呂尚霖), Best Thesis Award, Institute of Information & Computing Machinery (IICM), Taiwan. (中華民國資訊學會 最佳碩博士論文獎)
  • 2016, Yun-Zhan Cai (蔡昀展), Pan Wen Yuan Scholarship. (潘文淵獎學金)
  • 2016, He-Teng Chang (張鶴騰), 國際積體電路電腦輔助設計(CAD)軟體製作競賽 定題組B題 國內賽 優等
  • 2016, Shang-Lin Lu (呂尚霖), Best Thesis Award, Taiwan Institute of Electrical and Electronic Engineering (TIEEE), Taiwan. (台灣電機電子工程學會 最佳碩博士論文獎)
  • 2016, You-Huei Ju (朱宥繐), College Student Research Award, project title: iParking -- Real-Time Parking Space Monitor and Guiding System with Cloud Service, Ministry of Science and Technology, Taiwan. (科技部大專生計畫研究創作獎: 愛停車-雲端停車格即時監控暨引導系統)
  • 2016, Yun-Zhan Cai (蔡昀展), College Student Participation in Research Projects, Ministry of Science and Technology, Taiwan. (科技部大專生計畫: 以OpenFlow為基礎之視覺化網路即時路況監測)
  • 2016, Chia-Ying Lin (林佳瑩), Garmin Scholarship (Garmin 獎學金)
  • 2015, He-Teng Chang (張鶴騰), Yi-Long Lu (呂宜龍), 國際積體電路電腦輔助設計(CAD)軟體製作競賽 定題組B題 國內賽佳作
  • 2015, He-Teng Chang (張鶴騰), Novatek Scholarship (聯詠科技獎學金)
  • 2015, Pei-Hua Su (蘇珮華), Honorary member of the The Phi Tau Phi Scholastic Honor Society, R.O.C. (斐陶斐榮譽學會榮譽會員)
  • 2015, You-Huei Ju (朱宥繐), College Student Participation in Research Projects, project title: iParking -- Real-Time Parking Space Monitor and Guiding System with Cloud Service, Ministry of Science and Technology, Taiwan. (科技部大專生計畫: 愛停車-雲端停車格即時監控暨引導系統)
  • 2015, Chia-Ying Lin (林佳瑩), Outstanding Engineering Student Award, Chinese Institute of Engineers, Taiwan. (中國工程師學會 優秀工程學生獎學金)
  • 2014, Hung-Wei Kao (高宏瑋), Best Thesis Award, Institute of Information & Computing Machinery (IICM), Taiwan. (中華民國資訊學會 最佳碩博士論文獎)
  • 2013, Guan-Yu Chen (陳冠宇), College Student Participation in Research Projects, Ministry of Science and Technology, Taiwan. (科技部大專生計畫: 管你停哪裡-適地性停車格引導服務)
  • 2017, Lo-An Chen (陳珞安), College Student Participation in Research Projects, Ministry of Science and Technology, Taiwan. (科技部大專生計畫: 整合智慧衣與語音通話之醫療照護應用開發)
  • 2015, Chi-Bo Lin (林季伯), College Student Participation in Research Projects, Ministry of Science and Technology, Taiwan. (科技部大專生計畫: 基於互動式臉部表情虛擬實境之視訊通話)
  • Journal Papers
    • International Journal
      1. Y.-T. Peng, S.-I. Sou, M.-H. Tsai and C.-S. Lin, Multipath Mobile Data Offloading of Deadline Assurance with Policy and Charging Control in Cellular/WiFi Networks accepted and to appear in Computer Networks () (DOI: 10.1016/j.comnet.2017.08.021) (SCI/EI) (IF 2016: 2.516, Rank: 13/52=25%, Category: Computer Science, Hardware & Architecture)
      2. C.-F. Yang, Y.-H. Ju, C.-Y. Hsieh, C.-Y. Lin, M.-H. Tsai and H.-L. Chang, iParking - A Real-Time Parking Space Monitoring and Guiding System. Vehicular Communications, 9: 301-305, 2017 (DOI: 10.1016/j.vehcom.2017.04.001) (MOST 104-2815-C-006-029-E, 105-2221-E-006-186-) (SCI/EI) (IF 2016: 5.108, Rank: 2/34=5.9%, Category: Transportation Science & Technology)
      3. C.-H. Lai, H.-L. Chang, M.-H. Tsai and C.-Y. Lin, Reducing Costs of LIPA Handover through Bearer Reservation with Preemption. IEEE Transactions on Vehicular Technology, 66(7): 6428-6438, 2017 (DOI: 10.1109/TVT.2016.2646519) (MOST 104-2221-E-006-041-, 105-2221-E-006-186-) (SCI/EI) (IF 2016: 4.066, Rank: 10/89=11.2%, Category: Telecommunications)
      4. C.-Y. Lin, H.-W. Kao, M.-H. Tsai and H.-L. Chang, Gateway-Assisted Two-Stage Radio Access for Machine Type Communication in LTE-Advanced Network. Computer Communications, 105(C): 79-88, 2017 (DOI: 10.1016/j.comcom.2016.12.017) (MOST 104-2221-E-006-041-, 105-2221-E-006-186-) (SCI/EI) (IF 2016: 3.338, Rank: 23/146=15.8%, Category: Computer Science, Information Systems)
      5. H.-L. Chang, C.-G. Wang, M.-T. Wu, M.-H. Tsai and C.-Y. Lin, Gateway-assisted Retransmission for Lightweight and Reliable IoT Communications. Sensors, 16(10):1560, 2016 (DOI: 10.3390/s16101560) (MOST 104-2221-E-006-041-, MOST104-3115-E- 009-006-) (SCI/EI) (IF 2016: 2.677, Rank: 10/58=17.2%, Category: Instrument & Instrumentation)
      6. M.-H. Tsai, C.-M. Chou and K.-C. Lan, Avoiding Biased-feeding in the Scheduling of Collaborative Multipath TCP. PLoS ONE, 11(8), 2016 (DOI: 10.1371/journal.pone.0161213) (MOST 104-2221-E-006-041-) (SCI/EI) (IF 2016: 2.806, Rank: 15/64=23.4%, Category: Multidisciplinary Sciences)
      7. Y.-Y. Shih, A.-C. Pang, M.-H. Tsai and C.-H. Chai, A Rewarding Framework for Network Resource Sharing in Co-channel Hybrid Access Femtocell Networks. IEEE Transactions on Computers, 64(11): 3079-3090, 2015. (DOI: 10.1109/TC.2015.2394453) (NSC 102-2221-E-006-113-MY2) (SCI/EI) (IF 2015: 1.723, Rank: 12/51=23.5%, Category: Computer Science, Hardware and Architecture)
      8. T.-H. Chuang, G.-H. Chen, M.-H. Tsai and C.-L. Lin, Alleviating Interference Through Cognitive Radio for LTE-Advanced Network. International Journal of Electrical and Computer Engineering, 5(3), 2015.
      9. S.-Y. Tsai, S.-I. Sou and M.-H. Tsai, Reducing Energy Consumption by Data Aggregation in M2M Networks Wireless Personal Communication., 74(4): 1231-1244, 2014 (DOI: 10.1007/s11277-013-1574-1) (NSC 102-2221-E-006-113-MY2, NSC 101-2221-E-006-235-) (SCI/EI) (IF 2014: 0.653, Rank: 60/77=77.9%, Category: Telecommunications)
      10. Y.-B. Lin, M.-H. Tsai, and Y.-K. Tu, IMS Emergency Services: A Preliminary Study. IEEE Wireless Communications., 18(1): 6-14, 2011 (DOI: 10.1109/MWC.2011.5714020) (NSC 100-2218-E-006-015-MY2) (SCI/EI) (IF 2011: 2.575, Rank: 4/144=2.8%, Category: Computer Science, Information Systems)
      11. C.-H. Gan, M.-H. Tsai, Y.-B. Lin, Efficient Routing for International Mobile Call Setup. IEEE Wireless Communications, 17(4): 71-77, 2010 (DOI: 10.1109/MWC.2010.5547924) (SCI/EI) (IF 2010: 1.798, Rank: 11/80=13.8%, Category: Telecommunications)
      12. M.-H. Tsai, Y.-B. Lin, and H.-H. Wang, Active Location Reporting for Emergency Call in UMTS IP Multimedia Subsystem. IEEE Transactions on Wireless Communications, 8(12): 5837-5843, 2009 (DOI: 10.1109/TWC.2009.12.070080) (SCI/EI) (IF 2009: 1.903, Rank: 12/77=15.6%, Category: Telecommunications)
      13. Y.-B. Lin, M.-H. Tsai, H.-W. Dai, and Y.-K. Chen Bearer Reservation with Preemption for Voice Call Continuity. IEEE Transactions on Wireless Communications, 8(5): 2716-2725, 2009 (DOI: 10.1109/TWC.2009.081085) (SCI/EI) (IF 2009: 1.903, Rank: 12/77=15.6%, Category: Telecommunications)
      14. M.-H. Tsai, Y.-B. Lin, Talk Burst Control for Push-to-talk over Cellular. IEEE Transactions on Wireless Communications, 7(7): 2612-2618, 2008 (DOI: 10.1109/LCOMM.2008.060980) (SCI/EI) (IF 2008: 2.181, Rank: 28/257=10.9%, Category: Engineering, Slectrical and Electronic)
      15. I. Chlamtac, H.-Y. Lee, Y.-B. Lin, M.-H. Tsai, An OSA Service Capability Server for Mobile Services. International Journal of Pervasive Computing and Communications, 4(3):268-278, 2008.
      16. Y.-B. Lin and M.-H. Tsai, Eavesdropping through Mobile Phone. IEEE Transactions on Vehicular Technology, 56(6): 3596-3600, 2007 (DOI: 10.1109/TVT.2007.901060) (SCI/EI) (IF 2007: 1.191, Rank: 14/66=21.2%, Category: Telecommunications)
      17. L.-Y. Wu, M.-H. Tsai, Y.-B. Lin, J.-S. Yang, A Client-Side Design and Implementation for Push to Talk over Cellular Service. Wireless Communications & Mobile Computing, 7(5): 539-552, 2007 (DOI: 10.1002/wcm.369) (SCI/EI) (SCI/EI) (IF 2007: 1.225, Rank: 13/66=19.7%, Category: Telecommunications)
      18. Y.-B. Lin, M.-H. Tsai, Caching in I-CSCF of UMTS IP Multimedia Subsystem. IEEE Transactions on Wireless Communications, 5(1):186-192, 2006 (DOI: 10.1109/TWC.2006.1576542) (SCI/EI) (SCI/EI) (IF 2006: 1.184, Rank: 14/59=23.7%, Category: Telecommunications)
    • Domestic Journal
      1. 林賢哲, 蔡孟勳 "黎明志工銀行-你今天志工了嗎" International Journal of Science and Engineering, 5(1):117-122, 2015
      2. M.-H. Tsai, Y.-B. Lin "A Study on IMS Call Control", 中華民國資訊學會通訊, 2011 年 10 月號.
      3. 蔡孟勳, 林一平, 戴惠雯, 陳元凱 "線路交換與封包交換網路間語音通話連續性之通道保留機制", 中華民國資訊學會通訊
      4. 蔡孟勳, 林一平, 王曉涵, "IMS 緊急電話之位置回報機制", 電信研究雙月刊, 2007 年 10 月號.
  • Conference Papers
    • International Conference
      1. C.-Y. Lin, W.-P. Tsai, M.-H. Tsai and Y.-Z. Cai, Adaptive Load-balancing Scheme Through Wireless SDN-based Association Control Proceeding of the 31th IEEE International Conference on Advanced Information Networking and Applications (AINA'17), Taipei, Taiwan, March 2017. (Accept Rate: 29%) (MOST 105-2221-E-006-186-)
      2. T.-H. Chuang, P.-H. Su and M.-H. Tsai, Residual Size-based Mobile Data Offloading for File Transmission on Mobile Devices Proceeding of the 31th IEEE International Conference on Advanced Information Networking and Applications (AINA'17), Taipei, Taiwan, March 2017. (Accept Rate: 29%) (MOST 105-2221-E-006-186-)
      3. Y.-Z. Cai, C.-Y. Lin and M.-H. Tsai, Application-aware Realtime Monitoring with Data Visualization in OpenFlow-based Network Proceeding of the 31th IEEE International Conference on Advanced Information Networking and Applications Workshops (WAINA'17), Taipei, Taiwan, March 2017. (MOST 105-2221-E-006-186-, 105-2815-C-006-108-E)
      4. C.-F. Yang, Y.-H. Ju, C.-Y. Hsieh, C.-Y. Lin, M.-H. Tsai and H.-L. Chang, iParking -- Real-Time Parking Space Monitor and Guiding System with Cloud Service. Lecture Notes in Computer Science (LNCS), 2016. (MOST 105-2221-E-006-186-, 104-2815-C-006-029-E)
      5. S.-I. Sou, Y.-T. Peng, M.-H. Tsai and Y. Lee, Enabling Proximity Call Continuity via Common Neighbor Tunneling for Public Safety in LTE. Proceeding of 2016 International Conference on Networking and Network Applications (NaNA'16), Hakodate, July 2016. (MOST 104-2221-E-006-041-)
      6. H.-L. Chang, S.-L. Lu, T.-H. Chuang, C.-Y. Lin, M.-H. Tsai and S.-I. Sou, Optimistic DRX for Machine-type Communications Proceeding of 2016 IEEE International Conference on Communications (ICC'16), Kuala Lumpur, May 2016. (MOST 104-2221-E-006-041-, MOST104-3115-E- 009-006-) (EI) (Accept Rate: 39%)
      7. H.-W. Kao, Y.-H. Ju and M.-H. Tsai, Two-Stage Radio Access for Group-Based Machine Type Communication in LTE-A Proceeding of 2015 IEEE International Conference on Communications (ICC'15), London, June 2015. (NSC 102-2221-E-006-113-MY2) (EI) (Accept Rate: 38%)
      8. T.-H. Chuang, M.-H. Tsai and C.-Y. Chuang, Group-Based Uplink Scheduling for Machine-Type Communications in LTE-Advanced Networks Proceeding of the 29th IEEE International Conference on Advanced Information Networking and Applications Workshops (WAINA'15), Gwangju, Korea, March 2015. (NSC 102-2221-E-006-113-MY2)
      9. G.-H. Chen, T.-H. Chuang, M.-H. Tsai and C.-L. Lin, Inter-cell Interference through Cognitive Radio for LTE-Advanced Downlink Transmission in Heterogeneous Network Proceeding of the 6th International Conference on Internet (ICONI'14), Taipei, December 2014. (NSC 102-2221-E-006-113-MY2)
      10. S.-E. Lin, W.-P. Tsai, M.-H. Tsai and A.-C. Pang, IROL: A Humanoid Mobility Model for Mobile Ad Hoc Network Proceeding of 2014 IEEE International Conference on Communications (ICC'14), Sydney, June 2014. (NSC 102-2221-E-006-113-MY2, NSC 101-2221-E-006-235-) (EI) (Accept Rate: 39%)
      11. C.-H. Yu, P.-H. Su, C.-H. Lai, M.-H. Tsai, A Novel Semi-Static Interference Coordination Scheme for LTE Uplink Proceeding of the 9th International Conference on Information, Communications and Signal Process (ICICS'13), Tainan, December 2013. (NSC 102-2221-E-006-113-MY2, NSC 101-2221-E-006-235-) (EI)
      12. Y.-R. Chen, Z.-R. Wang, P.-A. Hsiung, S.-J. Chen, M.-H. Tsai, Backward Probing Deadlock Detection for Networks-On-Chip(s) Proceeding of the 7th International Symposium on Networks-on-Chip (NOCS'13), Tempe, Arizone, April 2013. (NSC 101-2221-E-006-235-) (EI) (Accept Rate: 25%)
      13. J.-S. Liang, H.-W. Kao, H.-C. Tsao, S.-C. Chang, M.-H. Tsai, K.-H. Li and Y. C. Sung Two-Phase Online Memory Leak Detection Proceeding of the 14th Asia-Pacific Network Operations and Management Symposium (APNOMS 2012), Seoul, September 2012. (NSC 100-2218-E-006-015-MY2, NSC 101-2221-E-006-235-) (EI)
      14. Y. C. Sung, M.-H. Tsai and H.-Y. Lee An Efficient Robust Header Compression Mechanism for Long Term Evolution Advanced Relay Architecture Proceeding of the 14th Asia-Pacific Network Operations and Management Symposium (APNOMS 2012), Seoul, September 2012. (NSC 100-2218-E-006-015-MY2, NSC 101-2221-E-006-235-) (EI)
      15. S.-Y. Tsai, S.-I. Sou and M.-H. Tsai Effect of Data Aggregation in M2M Networks Proceeding of the 15th International Symposium on Wireless Personal Multimedia Communications (WPMC 2012), Taipei, September 2012. (Best Paper Award) (NSC 100-2218-E-006-015-MY2, NSC 101-2221-E-006-235-) (EI) (Accept Rate: 39.8%)
      16. M.-H. Tsai, R. Chen, J.-F. Sung, E. Wu, E. Wei, Z.-H. Wu and J.-S. Liang Efficient and Flexible Emergency Communications in Next Generation Mobile Network Proceeding of the 8th IEEE International Conference on e-Business Engineering (ICEBE 2011), Beijing, October 2011. (NSC 100-2218-E-006-015-MY2) (EI; accept rate: 21.8%)
      17. R. Chen, M.-H. Tsai, T. Wrobel, J.-M. Chen, S.-H. Wang, S.-S. Ku, J.-H. Jung and J.-Y. Jeng When Social Networking Meets the Next Generation Network Proceeding of the 13th Asia-Pacific Network Operations and Management Symposium (APNOMS 2011), Taipei, September 2011. (NSC 100-2218-E-006-015-MY2) (EI)
      18. M.-H. Tsai and H.-W. Dai Bearer Reservation with Preemption for Voice Call Continuity. Proceeding of the 10th International Conference on Mobile Data Management: Systems, Services and Middleware (MDM 2009), Taipei, May 2009. (EI) (Accept Rate: 26.1%)
      19. M.-H. Tsai, Y.-B. Lin, and H.-H. Wang, Active Location Reporting for Emergency Call in UMTS IP Multimedia Subsystem. Proceeding of the 10th International Conference on Mobile Data Management: Systems, Services and Middleware (MDM 2009), Taipei, May 2009. (EI) (Accept Rate: 26.1%)
    • Domestic Conference
      1. G.-Y. Chen, C.-C. Chuang, M.-H. Tsai, A.-C. Pang, T.-J. Hsieh, Resource-Aware Consistent Updates in Software-Defined Networking 22nd Mobile Computing Workshop, Kaohsiung, August 2017. (Best Oral Presentation Award) (info)
      2. 劉俊林, 廖其忻, 蔡孟勳 基於SDN網路對抗DDoS攻擊之新型解決方案研究 第二十二屆行動計算研討會, 高雄, 2017. (info)
      3. 陳珞安, 趙珮均, 蔡孟勳 整合智慧衣與語音通話之醫療照護應用開發 第二十二屆行動計算研討會, 高雄, 2017. (info)
      4. 方鈞麒, 蔡孟勳 基於 SDN 之網路服務品質優化機制 第二十二屆行動計算研討會, 高雄, 2017. (info)
      5. 蔡昀展, 陸勇盛, 蔡孟勳 OpenFlow 為基礎之視覺化網路即時路況監測 第二十一屆行動計算研討會, 南投, 2016. (info)
      6. 瞿旭民, 徐朝逸, 蔡孟勳 透過Qt 實作跨系統的自動編譯開發平台 第二十一屆行動計算研討會, 南投, 2016. (info)
      7. 楊靜妃, 朱宥繐, 謝忠穎, 蔡孟勳 愛停車 -- 雲端停車格即時監控暨引導系統 第二十屆行動計算研討會, 南投, 2015. (info)
      8. 黃筱涵, 林賢哲, 蔡孟勳, 賴宥羽 Android系統中基於修改framework實現錄製與重播觸控行為之方法 第二十屆行動計算研討會, 南投, 2015. (info)
      9. Tse-Yu Pan, Chi-Bo Lin, You-Lun Hsu, Chen-Yu Zhu, Yu-Cheng Chen, Wan-Lun Tsai, Min-Chun Hu and Meng-Hsun Tsai PCF Shadow Mapping Enhancement by Post-blurring Shadow Buffer. The 28th IPPR Conference on Computer Vision, Graphics, and Image Processing, Ilan, 2015. (info)
      10. 林賢哲, 蔡孟勳 黎明志工銀行-你今天志工了嗎 第十九屆行動計算研討會, 台南, 2014. (info)
      11. C.-Y. Lin, J.-T. Su, W.-P. Tsai, M.-H. Tsai Finding Nearby Available Roadside Parking Spot. The 27th IPPR Conference on Computer Vision, Graphics, and Image Processing, Pingtung, 2014. (info)
      12. 陳冠宇, 蔡婉萍, 蔡孟勳 管你停哪裡-適地性停車格引導服務 第十八屆行動計算研討會, 苗栗, 2013. (info)
      13. H.-Y. Lee, Y.-B. Lin, M.-H. Tsai An OSA Service Capability Server for Mobile Services 12th Mobile Computing Workshop, Taichung, March 2006. (info)
  • Book Chapter
    1. S.-Y. Tsai, S.-I. Sou and M.-H. Tsai Effect of Data Aggregation in M2M Networks Internet of Things and M2M Communications, The River Publishers Series in Information Science and Technology, May, 2013.
  • Patents
      1. 蔡孟勳, 宋映蓉, 林一平, 張少榛, 鄭心瑀, "兩階段式偵測記憶體不當使用之方法與系統" 中華民國專利, 專利號: I476585, 專利權人: 中華電信, 2015.
      2. 顏在賢, 蔡孟勳, 林一平, 梁慶豐, "國際漫遊通話的繞送方法" 中國大陸專利, 專利號: CN101656946B, 專利權人: 工業技術研究院, 2013.
      3. C.-H. Gan, M.-H. Tsai, Y.-B. Lin, C.-F. Liang, Method and Gateway for Routing International Mobile Telephone Calls. U.S. Patent, Patent Number: US8340020, Assignee: Information and Communications Research Lab/ Industrial Technology Research Institute (ICL/ITRI), U.S., 2012.
      4. 顏在賢, 蔡孟勳, 林一平, 梁慶豐, "國際漫遊通話之閘道器及其繞送方法" 中華民國專利, 專利號: I368430, 專利權人: 工業技術研究院, 2012.
      5. 林一平, 蔡孟勳, 楊人順, "利用快取機制以加速通話建立之方法與系統". 中華民國專利, 專利號: I252027, 專利權人: 工業技術研究院, 2006.
Presentation/Talks
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