In broadband multimedia satellite networks it is necessary to multiplex bursty streams of traffic with differing Quality of Service (QoS) requirements to maximise the utilisation of the satellite link bandwidth. Providing the desired QoS of each service, in a multi-service environment is a major challenge for satellite networks. Asynchronous Transfer Mode (ATM) which provides hard QoS guarantees is suitable for a multi-service satellite environment. ATM has been developed as a vehicle for multimedia communications and is widely regarded as one of the most important and fastest-growing communications technology of this decade. The design of suitable traffic and congestion control algorithms is one of the most important challenge for the success of an ATM-based satellite network. This thesis develops and optimises a traffic and congestion control mechanism which can provide users the required QoS for ATM over satellite networks. In order to provide QoS differentiation for end-to-end communication it is proposed to use both loss and delay priorities, which are determined form the required Cell Loss Rate (CLR) and Cell Transfer Delay (CTD) parameters, for each service class. A multiple shared buffer scheduling (MSBS) policy considering both delay and loss priorities, is proposed and evaluated for scheduling and discarding of ATM cells. It is shown that both the CTD and CLR requirements of ATM services can be met by the MSBS scheme. A combined preventive/reactive control scheme incorporating an adaptive Leaky Bucket (LB) is investigated for the satellite environment. It has been found that reactive control improves the cell loss due to congestion for time scales larger than the propagation delay. As the satellite air interface bandwidth is currently one of the most expensive commodities in the service provision, an adaptive MAC protocol that can support the ATM service classes whilst maximising the bandwidth utilisation, is proposed and evaluated. The mapping of ATM service classes to MAC classes and the use of a prioritised request queue provides the QoS differentiation required by ATM networks. It is shown that a pure reservation system performs poorly for very bursty user traffic. The user population which can be supported using Random Access (RA) for very bursty users with short burst duration is higher. The system throughput can be maximised, by making this protocol adaptive to changing traffic characteristics. It is shown that the utilisation of the frame capacity and the total number of users served can be improved by using this protocol.

International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / To deliver high bandwidth, a ubiquitous inter-/intra-building cable plant consisting of single mode and multimode fiber as well as twisted pair copper is required. The selection of the "glue" to transport and interconnect distributed LANs with central facility resources over a pervasive cable plant is the focus of this paper. A description of the traditional problems that must be overcome to provide very high bandwidth beyond the narrow confines of a computer center is given. The applicability of Asynchronous Transfer Mode (ATM) switching (interconnection) and Synchronous Optical NETwork (SONET) (transport) for high bandwidth delivery is described using the environment and requirements of Sandia National Laboratories. Other methods for distributing high data rates are compared and contrasted. Sandia is implementing a standards based foundation utilizing a pervasive single mode fiber cable plant, SONET transport, and ATM switching to meet the goals of gigabit networking.

International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / As aircraft become more complex and require more resources over larger areas, the challenge of the test ranges is to provide economical solutions to move telemetry data from the test article to the data processing facility. Edwards AFB is in the process of upgrading the ground transmission facilities to transport data including telemetry using Asynchronous Transfer Mode (ATM). This paper documents the challenge of supporting telemetry over ATM, different approaches that are available, the benefits of using ATM, and discussion of candidate hardware options. The effort at Edwards include the linking of the major range facilities over a fiber optic backbone and links to other major test ranges in the Southwest Range Complex via microwave. The fiber optic backbone is expected to be OC-12c (622 Mbps) ATM supporting new capabilities as well as all of the legacy systems. The backbone system will be designed so that migration to OC-48 is possible without service disruption. The microwave links are multiple DS-3 capable. Some of these DS-3s may support legacy systems, but the ability to link ranges using ATM is expected simultaneously.

International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / As the flight test community moves into the 21st century, the ever increasing demand for higher telemetry data rates and the need to transport additional data types is becoming the challenge of every flight test range. The evolution of the flight test range has grown from low telemetry data rates and a few 2400 baud tracking sources into high-speed telemetry, GPS based tracking, networking, digital video, and more. Recognizing the need to change the way data is managed has resulted in an effort to redefine the work centers at the Air Force Flight Test Center (AFFTC) at Edwards AFB. The Technical Control Center (TCC) within the Ridley Mission Control Center at Edwards AFB is currently being relocated with the intent of achieving tomorrow’s vision, while supporting the missions of today. One major goal of this redefinition is the elimination of as much analog transmission equipment as possible in favor of digital transmission. The new digital range requires management of data and allocation of that management in different ways than the past. Moving to an all-digital range has advantages that are just now being realized. This paper outlines the current and future design, configuration, maintenance, and operation of the TCC and touches on how some of the other range functions are impacted. In addition, the challenges and benefits of implementing the next generation in range communications will be discussed.

International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Asynchronous Transfer Mode (ATM) is a technology that is experiencing tremendous growth in the commercial telecommunications sector. Leveraging commercial investment and introducing ATM into today’s flight test range, while ensuring that all requirements are satisfied, are paying large dividends in capability and efficiency. The flight test community imposes unique requirements specifically with regards to telemetry that are not the norm of the commercial telecommunications industry. Efforts are underway at the Air Force Flight Test Center (AFFTC), Edwards Air Force Base (AFB) to implement an ATM system for all range communications. This paper addresses the unique requirements imposed by the flight test community, a revolutionary breakthrough from a commercial ATM vendor, and other challenges experienced while implementing this system. The system being implemented at Edwards will carry all types of range data over SONET/ATM hybrid equipment and interface to other flight test ranges and facilities over a mix of commercial leased lines and dedicated microwaves.

by Chan-weng Lai. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references (leaves 81-[83]). / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Where May Soft Multiplexing Occur? --- p.2 / Chapter 1.1.1 --- Multiplexing VC's on to a VP --- p.2 / Chapter 1.1.2 --- Virtual Private Networks --- p.5 / Chapter 1.2 --- Survey of Previously Proposed Hard Multiplexing Schemes --- p.7 / Chapter 1.3 --- Contributions of This Thesis --- p.8 / Chapter 1.4 --- Organization of This Thesis --- p.10 / Chapter 2 --- "Effect of (δ,p) Channels in ATM Networks" --- p.12 / Chapter 2.1 --- Leaky Bucket --- p.13 / Chapter 2.2 --- "(δ, p) Channel" --- p.14 / Chapter 2.3 --- "Comparison of Deterministic VP's and(δ, p) VP's" --- p.17 / Chapter 2.4 --- A Simulation Study : The Effect of δ --- p.20 / Chapter 2.5 --- Summary of This Chapter --- p.23 / Chapter 3 --- Soft-Multiplexing Scheduling Schemes --- p.26 / Chapter 3.1 --- Issues in Soft Multiplexing --- p.27 / Chapter 3.2 --- First Come First Serve (FCFS) --- p.30 / Chapter 3.3 --- Fixed-resource Allocation --- p.32 / Chapter 3.4 --- Excess Token Passing --- p.35 / Chapter 3.5 --- Simulation Results --- p.38 / Chapter 3.6 --- Summary of This Chapter --- p.42 / Chapter 4 --- Analysis of Rate Proportional Token Passing --- p.44 / Chapter 4.1 --- The Fictitious System --- p.45 / Chapter 4.2 --- Leaky-Bucket-Controlled Sources --- p.49 / Chapter 4.3 --- Delay Bound for All Work Conserving Soft Multiplexers --- p.51 / Chapter 4.4 --- The All-Greedy Bound in a RPTP Multiplexer --- p.53 / Chapter 4.5 --- Calculation of the Worst-Case Delay in a RPTP Multiplexer --- p.56 / Chapter 4.6 --- Summary of This Chapter --- p.61 / Chapter 5 --- Implementation of RPTP --- p.63 / Chapter 5.1 --- Virtual Time Implementation --- p.64 / Chapter 5.2 --- Leaky Bucket Implementation --- p.70 / Chapter 5.3 --- Summary of This Chapter --- p.72 / Chapter 6 --- Conclusion --- p.73 / Chapter A --- End-to-end Delay/Backlog Bound in ATM Networks --- p.76 / Bibliography --- p.81

by Cheng Sze Wan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1999. / Includes bibliographical references (leaves 72-[76]). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Background --- p.1 / Chapter 1.2 --- Traffic Scheduling in Input-buffered Switches .。 --- p.3 / Chapter 1.3 --- Organization of Thesis --- p.7 / Chapter 2 --- Principle of Enchanced PIM Algorithm --- p.8 / Chapter 2.1 --- Introduction --- p.8 / Chapter 2.1.1 --- Switch Model --- p.9 / Chapter 2.2 --- Enhanced Parallel Iterative Matching Algorithm (EPIM) --- p.10 / Chapter 2.2.1 --- Motivation --- p.10 / Chapter 2.2.2 --- Algorithm --- p.12 / Chapter 2.3 --- Performance Evaluation --- p.16 / Chapter 2.3.1 --- Simulation --- p.16 / Chapter 2.3.2 --- Delay Analysis --- p.18 / Chapter 3 --- Providing Bandwidth Guarantee in Input-Buffered Switches --- p.25 / Chapter 3.1 --- Introduction --- p.25 / Chapter 3.2 --- Bandwidth Reservation in Static Scheduling Algorithm --- p.26 / Chapter 3.3 --- Incorporation of Dynamic and Static Scheduling Algorithms .。 --- p.32 / Chapter 3.4 --- Simulation --- p.34 / Chapter 3.4.1 --- Switch Model --- p.35 / Chapter 3.4.2 --- Simulation Results --- p.36 / Chapter 3.5 --- Comparison with Existing Schemes --- p.42 / Chapter 3.5.1 --- Statistical Matching --- p.42 / Chapter 3.5.2 --- Weighted Probabilistic Iterative Matching --- p.45 / Chapter 4 --- EPIM and Cross-Path Switch --- p.50 / Chapter 4.1 --- Introduction --- p.50 / Chapter 4.2 --- Concept of Cross-Path Switching --- p.51 / Chapter 4.2.1 --- Principle --- p.51 / Chapter 4.2.2 --- Supporting Performance Guarantee in Cross-Path Switch --- p.52 / Chapter 4.3 --- Implication of EPIM on Cross-Path switch --- p.55 / Chapter 4.3.1 --- Problem Re-definition --- p.55 / Chapter 4.3.2 --- Scheduling in Input Modules with EPIM --- p.58 / Chapter 4.4 --- Simulation --- p.63 / Chapter 5 --- Conclusion --- p.70 / Bibliography --- p.72

by Feng Gang. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1998. / Includes bibliographical references (p. 169-181). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.

by Guo, Xiao-Lei. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references (p. 138-[147]). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web.

by Kin-Yu Cheung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1997. / Includes bibliographical references (leaves 64-[68]). / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Multistage Interconnection Architectures --- p.2 / Chapter 1.2 --- Interconnection Topologies --- p.4 / Chapter 1.3 --- Design of Switch Module-An Example of Multichannel Switch --- p.7 / Chapter 1.4 --- Organization --- p.8 / Chapter 1.5 --- Publication --- p.9 / Chapter 2 --- BMSN and SpiderNet: Two Large Scale ATM Switches --- p.13 / Chapter 2.1 --- Introduction --- p.13 / Chapter 2.2 --- Architecture --- p.14 / Chapter 2.2.1 --- Topology --- p.14 / Chapter 2.2.2 --- Switch Modules --- p.15 / Chapter 2.3 --- Routing --- p.17 / Chapter 2.3.1 --- VP/VC Routing --- p.18 / Chapter 2.3.2 --- VP/VC Routing Control --- p.22 / Chapter 2.3.3 --- Cell Routing --- p.23 / Chapter 2.3.4 --- Alternate Path Routing for Fault Tolerance --- p.24 / Chapter 2.4 --- SpiderNet --- p.25 / Chapter 2.5 --- Performance and Discussion --- p.26 / Chapter 2.5.1 --- BMSN vs SpiderNet --- p.26 / Chapter 2.5.2 --- Network Capacity --- p.29 / Chapter 2.6 --- Concluding Remarks --- p.30 / Chapter 3 --- Multichannel ATM Switching --- p.39 / Chapter 3.1 --- Introduction --- p.39 / Chapter 3.2 --- Switch Design --- p.40 / Chapter 3.3 --- Channel Allocation Algorithms --- p.41 / Chapter 3.3.1 --- VC-Based String Round Robin (VCB-SRR) Algorithm --- p.41 / Chapter 3.3.2 --- Implementation of the VCB-SRR Algorithm --- p.43 / Chapter 3.3.3 --- Channel Group Based Round Robin (CGB-RR) Algorithm --- p.50 / Chapter 3.3.4 --- Implementation of the CGB-RR Algorithm --- p.51 / Chapter 3.4 --- Performance and Discussion --- p.53 / Chapter 3.5 --- Concluding Remarks --- p.57 / Chapter 4 --- Conclusion --- p.62 / Bibliography --- p.64