本論文乃針對於以非同步傳輸模式為基礎的被動式光纖網路中的排程問題做深入的研究與探討。這個以非同步傳輸模式為基礎的被動式光纖網路是藉由一個光波長差動多工網路做為骨幹將多個非同步傳輸網路與以連結。但在此系統中，兩種網路的排程方法設計考量的重點與因素卻不相同。就前者的光波長差動多工骨幹網路來說，排程方法所要考量的因素是系統的傳輸效能和穩定度；而後者非同步傳輸模式網路的排程方法卻必須提供端點多種不同的服務品質保證要求。根據針對這些問題的研究，在本論文中分別對光纖網路和非同步傳輸模式網路提出了排程方法，使之能夠輕易地被整合應用到以非同步傳輸模式為基礎的被動式光纖網路中。
在光波長差動多工網路中，我們提出了一個交通量預測方法，並在這方法中將所有在光纖網路中的關鍵因素考量進去。這個方法的效能比起原本的時間差動多工和預約方法來得好出很多，而且它也很適合於被應用在以傳輸效能考量為主的骨幹網路系統上。不僅如此，這個交通量預測方法也可以輕易地被應用於較小的區域網路系統中。

至於在非同步傳輸模式網路中，雖然最早期限優先的排程方法已經被證明是一個支援遠端到遠端的延遲保證的最佳方法，但是這個方法本身缺乏了一個控制遺失率的優先權處理機制。因此，為了能提供一個可以同時保證延遲時間和有效控制遺失率的方法，我們提出了一個具有遺失率控制的近似最早期限優先排程的方法。這一個方法可以嚴格地保證封包傳輸延遲時間，同時也可以減低封包的遺失率。

In this dissertation, the scheduling problems in ATM-PON (ATM-Passive Optical Network) system are studied. ATM-PON system has been developed by ITU-T and NTT as an access network system for the supporting of full service, in which several ATM (Asynchronous Transfer Mode) network systems are interconnected by a PSC (Passive Star Coupler) based WDM (Wavelength Division Multiplexing) network system. The design of scheduling disciplines for WDM and ATM network system has different criteria. As the backbone network system, WDM network with large bandwidth and high transmission rate needs a stable, adaptive and efficient scheduling discipline for accommodating the traffic changes. On the other hand, the scheduling discipline for ATM switching network system has to provide various QoS (Quality of Service) -guaranteed services. Based on these studies, we propose two scheduling disciplines for the WDM and ATM network system. These two scheduling disciplines can be implemented easily in the ATM-PON system.
In the WDM network system, we propose a traffic prediction scheme that considers all the bottlenecks and critical factors caused in the WDM network system. The simulation results show that the performance of proposed prediction scheme is much better than the traditional TDM and reservation scheme. Besides, the traffic prediction scheme is very suitable to be applied in backbone networks, in which the transmission performance is much more important than the services that the network can provide. Moreover, the traffic prediction scheme also can be applied in the smaller local area network system.

As to the ATM network, although Earliest-Deadline-First (EDF) is recognized as the optimal scheduling discipline to support the bounded-delay service, it lacks of the support of a prioritizing scheme for cell loss control. Consequently, we modify the simple FIFO to implement a near-EDF scheduling discipline with loss control. The proposed scheme can guarantee the stringent delay bound and minimize the cell loss rate. The adaptive queue lengths in the proposed buffer structure can be dynamically determined according to the traffic load and cell delay constraints to minimize the cell loss rates. With the different deterministic adaptive queue lengths, the proposed scheme is equivalent to the other previous schemes.

The simulation results show that the traffic prediction scheme has much shorter message delay time than the typical schemes. The accessible offered load of the Near-EDF with loss control scheme in ATM network system is higher than the other schemes. Further, the mathematical analysis also shows that the proposed scheme's schedulability condition is approximate to that of EDF. We also derive the formulas of the cell loss probability in Near-EDF with loss control scheme to evaluate the cell loss rate of each priority class.

[1] T. E. Bell, "Technology 1991: telecommunications," IEEE Spectrum, vol. 28, no. 1, pp. 44-47, Jan. 1991.
[2] B. E. Carpenter, L. H. Landweber, and R.Tirler, "Where are we with gigabits?" IEEE Network, Guest Editorial, Mar. 1992.
[3] M. N. Ransom and D. R. Spears, "Applications of public gigabit networks," IEEE Network, Mar. 1992.
[4] P. W. Shumate, Jr., "Optical fibers reach into homes." IEEE Spectrum, vol. 26, no. 2, pp. 43-47, Feb. 1989.
[5] Nim K. Cheung, Kiyoshi Nosu and Gerhard Winzer, "Epilog Latest Advances in Dense WDM Technology," Special Issues on Dense Wavelength Division Multiplexing Techniques for High Capacity and Multiple Access Communication Systems, IEEE JSAC, Vol. 8, No. 6, August 1990.
[6] A. S. Acampora and M. J. Karol, "An overview of lightwave packet networks," IEEE Network, vol. 3, pp. 29-41, Jan. 1989.
[7] P.E. Green, "Fiber Optic Networks. Englewood Cliffs", NJ: Prentice-Hall, 1993.
[8] R. Chipalkatti, Z. Zhang, "Protocols for Optical Star-Coupler Network Using WDM: Performance and Complexity Study," IEEE JSAC, vol. 11, No. 4, pp. 579-589, May 1993.
[9] D. Guo, Y. Yemini, and Z. Zhang, "Scalable High-Speed Protocols for WDM Optical Star Networks," in Proceedings of IEEE INFOCOM'94, pp. 1544-1551.
[10] C. A. Brackett, "Dense Wavelength Division Multiplexing Networks: Principles and Applications," IEEE JSAC, vol.8, No. 6, August 1990.
[11] A. Sneh and K. M. Johnson, "High-speed tunable liquid crystal optical filter for WDM systems," in Proceedings of IEEE/LEOS '94 Summer Topical Meetings on Optical Networks and their Enabling Technologies, (Lake Tahow, NV), pp. 59-60, July 1994.
[12] A. Ganz and Y. Gao, "A time-wavelength assignment algorithm for a WDM star network," in Proceedings, in Proceedings of IEEE INFOCOM'92, (Florence, Italy), pp. 2144-2150, May 1992.
[13] G. N. Rouskas and M. H. Ammar, "Analysis and optimization of transmission schedules for single-hop WDM networks," in Proceedings of IEEE INFOCOM'93, (San Francisco, CA), pp. 1342-1349, Mar. 1993.
[14] K. Bogineni, K. M. Sivalingham, and P. W. Dowd, "Low complexity multiple access protocols for wavelength-division multiplexed photonic networks," IEEE JSAC, vol. 11, pp. 590-604, May. 1993.
[15] D. A. Levine, and I. F. Akyildiz, "A reservation and collision-free media access protocol for optical star local area networks," in Proceedings of IEEE GLOBECOM'94, pp. 567-571.
[16] S. Tridandapani, J, s. Meditch, and A. K. Somani, "The MaTPi protocol: Masking Tuning times through Pipelining in WDM optical networks," in Proceedings of IEEE INFOCOM'94, (Toronto, Canada), pp. 1528-1535, June 1994.
[17] F. Jia, B. Mukherjee, J. Iness, and S. Ojha, "Scheduling Variable-Length Messages in a Single-Hop Multichannel Local Lightwave Network," IEEE/ACM Trans. on Networking, vol. 3, no. 4, pp. 477-488, August 1995.
[18] D. A. Levine, and I. F. Akyildiz, "PROTON: A Media Access Control Protocol for Optical Networks with Star Topology," IEEE/ACM Trans. on Networking, vol. 3, no. 2, pp. 158-168, April 1995.
[19] M. Chen and T. S. Yum, "A conflict-free protocol for optical WDMA networks," in Proceedings of IEEE GLOBECOM'91, pp. 1276-1281.
[20] R. Chipalkatti, Z. Zhang, and A.S. Acampora, "High speed communication protocols for optical star coupler using WDM," in Proceedings of IEEE INFOCOM'92, pp. 2124-2133.
[21] Y. Gong, and I. F. Akyildiz, "Dynamic Traffic Control Using Feedback and Traffic Prediction in ATM Networks," in Proceedings of IEEE INFOCOM'94, pp. 91-98.
[22] E. Coffman, M. R. Garey, and D. S. Johnson, "An application of bin-packing to multiprocessor scheduling," SIAM Journal of Computing, vol. 7, pp. 1-17, Feb. 1978.
[23] M. R. Garey, R. L. Graham, and D. S. Johnson, "Performance guarantees for scheduling algorithms," Operations Research, vol. 26, pp. 3-21, Jan.-Feb. 1978.
[24] M. S. Borella, and B. Mukherjee, "Efficient Scheduling of Nonuniform Packet Traffic in a WDM/TDM Local Lightwave Network with Arbitrary Transceiver Tuning Latencies," in Proceedings of IEEE INFOCOM'95, pp. 129-137.
[25] R. Chipalkatti, Z. Zhang, and A. S. Acampora, "Protocols for Optical Star-Coupler Network Using WDM: Performance and Complexity Study," IEEE JSAC, vol. 11, pp. 579-589, May 1993.
[26] H. Saran, and S. Keshav, "An Empirical Evaluation of Virtual Circuit Holding Times in IP-over-ATM Networks," in Proceedings of IEEE INFOCOM'94, pp. 1132-1140.
[27] B. Mukherjee, "WDM-based local lightwave network - part I: Single-hop system," IEEE Network Magazine, Vol. 6, pp. 12-27, May 1992.
[28] Y. Ofek and M. Sidi, "Design and Analysis of a Hybrid Access Control to an Optical Star Using WDM," in Proceedings of IEEE INFOCOM'91, pp. 20-31, Apr. 1991
[29] C.A. Brackett, "Dense Wavelength Division Multiplexing Networks: Principle and Applications," IEEE Journal on Selected Areas in Communications, vol. 8, pp.948-964, Aug. 1990
[30] A. R. Chraplyvy, "Limits on Lightwave Communications Imposed by Optical-Fiber Nonlinearities," IEEE Journal of Lightwave Technology, vol. 8, pp. 1548-1557, Oct. 1990
[31] Y. Yoshikuni, et al., "Broadly Tunable Distributed Bragg Reflector Lasers With Multiple Phase Shift Super Structure Grating", OFC/IOOC'93, TuC2, 1993
[32] Tao Yang and Jie Pan, "A Measurement-Based Loss Scheduling Scheme", In Proceedings of IEEE INFOCOM'96, pp. 1062-1070.
[33] Geping Chen and Ioannis Stavrakakis, "ATM Traffic Management With Diversified Loss and Delay Requirements", In Proceedings of IEEE INFOCOM'96, pp. 1037-1044.
[34] Jon C.R. Bennett and Hui Zhang, "WF2Q: Worst-case Fair Weighted Fair Queueing", In Proceedings of IEEE INFOCOM'96, pp. 120-128.
[35] Yasushi Takagi, Shigeki Hino, and Tatsuro Takahashi, "Priority Assignment Control of ATM Line Buffers with Multiple QOS Classes", IEEE J. Select Areas Communication, vol 9, no 7, Sept. '91, pp. 1078-1092
[36] H. Jonathan Chao and Daein Jeong, "Generalized Priority Queue Manager Design for ATM Switches," In Proceedings of IEEE ICC'96, pp.740-745.
[37] H. Jonathan Chao, Necdet Uzun, "An ATM Queue Manager Handling Multiple Delay and Loss Priorities," IEEE/ACM Transactions on Networking, vol. 3, no. 6, Dec. 1995, pp 652-659.
[38] Yao-Ching Liu and Christos Douligeris, "Nested Threshold Cell Discarding with Dedicated Buffers and Fuzzy Scheduling," In Proceedings of IEEE ICC'96, pp. 429-433.
[39] Yuming Liu and Peter J. Moylan, "Multi-Level Threshold for Priority Buffer Space Management in ATM Networks," In Proceedings of IEEE ICC'96 pp. 379-383.
[40] S. Suri, D. Tipper and G. Meempat, "A Comparative Evaluation Of Space Priority Strategies in ATM Networks," In Proceedings of IEEE INFOCOM'94, vol. 2, pp. 4c.3.1-4c.3.6.
[41] Wen-Tsuen Chen, Chun-Fu Hung and Sheng-Chuan Ding, "A Scheme QOS Control in ATM Swinthing Systems," In Proceedings of IEEE ICC'95, pp. 196-200.
[42] Zvi Rosberg, "Cell Multiplexing in ATM Networks," IEEE/ACM Transactions on Networking, vol 4, no 1, Feb '96, pp. 112-122.
[43] M. Vishnu and J. W. Mark, "HOL-EDD: A Flexible Service Scheduling Scheme for ATM Networks," In Proceedings of IEEE INFOCOM'96, pp. 5d.3.1-5d.3.8.
[44] Tao Yang, "An Optimal service Scheduling Policy for Packet Networks with Quality of Service Guarantees", In Proceedings of IEEE GLOBECOM'96, CD-ROM Version
[45] Nanying Yin, San-qi Li, and Thomas E. Stern, "Congestion Control for Packet Voice by Selective Packet Discarding," IEEE Transaction On Communication, Vol. 38, no. 5, May 1990 pp. 674-683.
[46] Abhijit K. Choudhury and Ellen L. Hahne, "Space Priority Management in a Shared Memory ATM Switch," In Proceedings of IEEE ICC'93 pp. 1375-1383.
[47] H. Jonathan Chao, and I. Hakan Pekcan, "Queue Management with Multiple Delay and Loss Priority for ATM Switches," In Proceedings of IEEE ICC'94 pp. 1184-1189
[48] Youngho, Lim, and Jhon E. Kobza, "Analysis of a Delay-Dependent Priority Discipline in an Integrated Multiclass Traffic Fast Packet," IEEE Trans. On Communication, vol. 38, no. 5, May 1990
[49] M. Vishnu and J. W. Mark, "HOL-EDD: A Flexible Service Scheduling Scheme for ATM Networks," In Proceedings of IEEE INFOCOM'96, pp. 647-654
[50] Dallas E. Werge, and J. Liebeherr, "A Near-Optimal Scheduler for QoS Networks," In Proceedings of IEEE INFOCOM'97,
[51] L. Georgiadis, R. Guerin, and A. Parekh, "Optimal Multiplexing on a Single link: Delay and Buffer Requirements," In Proceedings of IEEE INFOCOM'94, pp. 525-532
[52] J. Liebeherr, D. E. Wrege, and Domenico Ferrari, "Exact Admission Control in Networks with Bounded Delay Services," IEEE Trans. On Networking, pp. 885-901, vol. 4, no. 6, Dec. 1996
[53] Dinsh Verma, Hui Zang and D. Ferrari, "Delay Jitter Control for Real-Time Communication in a Packet Switching Network," In Proceedings of Tricomm '91, pp. 35-43
[54] Miki Hirano, and naoya Watanabe, "Characteristics of a Cell Multiplexer for Bursty ATM Traffic," In Proceedings of ICC '98, pp. 0399-0403
[55] Wen-Tsuen Chen and Che-Ming Lu, "An Adaptive Traffic Prediction Protocol in Optical Networks", Master thesis, Department of Computer Science, National Tsing-Hua University, June 1996
[56] MIT Lincoln Laboratory, "All-Optical Networking Consortium Reference List", http://www.ll.mit.edu/aon/references.html, July, 1997
[57] Henning Schulzrinne, "Network Bibliography", July, 1998
[58] International Telecommunication Union, "Broadband Optical Access Systems based on Passive Optical Networks (PON)," ITU-T G.983.1, Oct. 1998
[59] Tetsuya Kanada, "ATM-PON for Full Service Access Networks", Nippon Telegraph and Telephone (NTT) Optical Network Systems Laboratories, http://www.atmforum.com/atmforum/library/53bytes/current/article-04.html
[60] Lucent Technologies Japan Ltd, "Lucent technologies shipping optical network units to NTT for use in service provider's "fiber-near-the-home" project," http://public1.lucent.com/press/0499/990412.nsa.html, April 1999
[61] International Telecommunication Union, "The ONT Management and Control Interface Specification for ATM-PON", G.983.2, April, 2000
[62] KooHong Kang, Yongseok Yoon and Cheeha Kim, "A CAC Scheme for Heterogeneous Traffic in ATM Networks to Support Multiple QoS Requirements," in Proceeding of IEEE GLOBECOM'95, pp. 422-426.
[63] D. W. Peter and V. S. Frost, "Nested Threshold Cell Discarding for ATM Overload Control: Optimization Under Cell Loss Constraints," in Proceedings of IEEE INFOCOM '91, pp. 1403-1412.
[64] H. J. Chao and Hsiling Cheng, "A New QoS-Guaranteed Cell Discarding Strategy: Self-Calibrating Pushout," in Proceeding of IEEE GLOBECOM'94, pp. 929-934.
[65] J. W. Causey and H. S. Kim, "Comparison of Buffer Allocation Schemes in ATM Switches: Complete Sharing, Partial Sharing, and Dedicated Allocation," in Proceeding of IEEE ICC'94, pp. 1164-1168.
[66] Felix Hartanto, Harsha R. Sirisena and Kryzysztof Pawlikowski, "Protective Buffer Policies at ATM Switches," in Proceeding of ICC'95.
[67] Blair R. Collier and Hyong S. Kim, "Efficient Analysis of Shared Buffer Management Strategies in ATM Networks under Non-Uniform Bursty Traffic," in Proceeding of IEEE INFOCOM'96, pp. 671-678.
[68] S. Keshav, "An Engineering Approach to Computer Networking," Addison Wesley, 1997.
[69] A. K. Parekh, "A Generalized Processor Sharing Approach to Flow Control in Integrated Services Networks: The Single-Node Case," IEEE/ACM Trans. Networking, pp. 344-357, June 1993.
[70] Manolis Katevenis, Stefanos Sidiropoulos, and Costas Courcoubeties, "Weighted Round-Robin Cell Multiplexing in a General-Purpose ATM Switch Chip," IEEE J. Select. Areas Commun., vol. 9, no. 8, Oct. '91, pp. 1265-1279.
[71] Yao-Tsung Wamg, Tzung-Pao Lin, and Kuo-Chung Gan, "An Improved Scheduling Algorithm for Weighted Round-Robin Cell Multiplexing in an ATM Switch," in Proceeding of IEEE ICC'94, pp. 1032-1037.
[72] Hideyuki Shimonishi, Makiko Yoshida, Ruixue Fan, and Hiroshi Suzuki, "An Improvement of Weighted Round Robin Cell Scheduling in ATM Networks," in Proceeding of IEEE GLOBECOM'97.
[73] S. Jamaloddin Golestani, "A Self-Clocked Fair Queueing Scheme for Broadband Applications," in Proceeding of IEEE INFOCOM'94, pp. 5c.1.1-5c.1.10.
[74] L. Zhang, "Virtual Clock: A New Traffic Control Algorithm for Packet Switching Networks," in Proceedings of ACM SIGCOMM'90.
[75] H. Zhang and D. Ferrari, "Rate-Controlled Service Disciplines," Journal of High-Speed Networking, Vol. 3, No. 4, 1994, pp. 389-412.
[76] D. X. Chen and J. W. Mark, " Delay and Loss Control of An Output Buffered Fast Packet Switch Supporting Integrated Services," in Proceeding of IEEE ICC '92, pp. 0985-0989.
[77] A. K. Gupta and N. D. Georganas, "Priority Performance of ATM Packet Switches," in Proceeding of IEEE INFOCOM '92, pp. 0727-0733.
[78] H. Kroner, G. Hebuterne, and P. Boyer, "Priority Management in ATM Switching Nodes," IEEE J. Select. Areas Communications, vol. 9, no. 3, April 1991, pp. 418-427.
[79] A. Y-M. Lin, and John A. Silvester, "Priority Queuing Strategies and Buffer Allocation Protocols for Traffic Control at an ATM Integrated Broadband Switching System," IEEE J. Select. Areas Commun., vol. 9, no. 9, pp. 1524-1536, Dec. 1991.
[80] R. Beraldi and S. Marano "Limiting Removal Depth in the Push Out Scheme for ATM Networks," in Proceeding of IEEE ICC '92, pp. 0997-1003.
[81] H. J. Chao and Hsiling Cheng, "A New QoS-Guaranteed Cell Discarding Strategy: Self-Calibrating Pushout," in Proceeding of IEEE GLOBECOM'94, pp. 929-934.
[82] I. M. I. Habbab, M. Kavehrad, and C.-E. W. Sundberg, "Protocols for very high speed optical fiber local area networks using a passive star topology," Journal of Lightwave Technology, pp. 1782-1794, Dec. 1987
[83] N. Medhravari, "Performance and Protocol Improvements for Very High Speed Optical Fiber Local Area Networks Using a Passive Star Topology," Journal of Lightwave Technology, vol. 8. pp.520-530, Apr. 1990
[84] G. N. M. Suhhakar, N. Georganas, and M. Kaverhrad, "Slotted-ALOHA and reservation ALOHA Protocols for Very High-Speed Optical Fiber Local Area Networks Using Passive Star Topology," Journal of Lightwave Technology, vol. 9, pp. 1411-1422, Oct. 1991
[85] J. C. Lu and L. Kleinrock, "A Wavelength Division Multiple Access Protocol for High-Speed Local Area Networks with a Passive Star Topology," Performance Evaluation Journal, vol. 16, pp. 223-239, Nov. 1992
[86] F. Jia and B. Mukherjee, "The Receiver Collision Avoidance (RCA) Protocol for Single-Hop WDM Lightwave Network," Journal of Lightwave Technology, vol. 11, pp. 1053-1065, May/June 1993