Tangzhu

Traffic Management in ATM Networks Over Satellite Links

Rohit Goyal, Raj Jain, Mukul Goyal, Sonia Fahmy, Bobby Vandalore
Department of Computer Information Science
2015 Neil Ave, DL395
Columbus, OH 43210
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Tom vonDeak
NASA Lewis Research Center
21000 Brookpark Road, MS 54-2
Cleveland, OH 44135
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Email: [e-mail]

Abstract

This report presents a survey of the traffic management issues in the designing and implementation of satellite-ATM networks. First a reference satellite-ATM network architecture is presented along with an overview of the service categories available in ATM networks. The error characteristics of satellite channels, and techniques to improve the error characteristics, and the impact on ATM network performance are then discussed. A delay model for satellite networks and the major components of delay and delay variation are described. A survey of design options for TCP over UBR, GFR and ABR services in ATM is presented next. The main focuses is on traffic management issues. Several recommendations on the design options for efficiently carrying data services over satellite-ATM networks are presented.

Table of Contents

1 Introduction 3
2 Architectural Issues 4
2.1 A Reference Architecture for Satellite-ATM Networks 5
2.2 Service Categories in ATM Networks 7
3 Satellite Channel Error Characteristics 98
3.1 Impact of bursty errors on the ATM layer 10
3.2 Impact of bursty errors on AAL protocols 12
3.3 Impact of Bursty Errors on Physical Layer Protocols 13
3.4 Solutions for Improving Error Characteristics 17
3.5 Performance Studies of Reed-Solomon codes 18
3.6 COMSAT 's ATM Link Enhancement (ALE) technique 19
4 Satellite Delay Characteristics 21
4.1 Delay Requirements of Applications 2221
4.2 Satellite Network Delay Model 2322
4.3 Delay Variation Characteristics 25
5 Media Access

References: [GOYAL98b] Rohit Goyal, Raj Jain, et. al., "Improving the Performance of TCP over the ATM-UBR Service," To appear in Computer Communications, 1998. [GOYAL98d] Rohit Goyal, Raj Jain, et. al, "Providing Rate Guarantees to TCP over the ATM GFR Service," Submitted to LCN98, 1998. [I35696] ITU-T Recommendation I-356, “B-ISDN ATM Layer Cell Transfer Performance,” Geneva, October, 1996. [IESS308] IESS-308, “Performance Characteristics for Intermediate Data Range (IDR) Digital Carriers,” Appendix F: “Concatenation of Reed Solomon (RS) Outer Coding with the Existing FEC.” IESS-308 (Rev. 6B), December 4, 1992. [KALYAN97b] Shivkumar Kalyanaraman, "Traffic Management for the Available Bit Rate (ABR) Service in Asynchronous Transfer Mode (ATM) Networks," PhD Dissertation, The Ohio State University, 1997. [KOTA97b] Sastri Kota, Jerry Kallaus, Henry Huey, David Lucantoni, “Demand Assignment Multiple Access (DAMA) For Multimedia Services – Performance Results,” Proceedings of Milcom’97, Monterey, CA, 1997.