A dynamic routing concept for ATM-based satellite personal communication networks
A dynamic routing concept for ATM-based satellite personal communication networks
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DOI：
10.1109/49.634801
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发表时间：
1997-10-01
影响因子：
16.4
通讯作者：
Werner, M
中科院分区：
文献类型：
--
作者：
Werner, M
卫星系统将成为未来个人通信基础设施的重要组成部分。第一代候选卫星个人通信网络（S-PCN）将依赖于低地球轨道（LEG）和中地球轨道（MEG）星座。其中一个值得注意的趋势是宽带服务和ATM的使用。对于采用星间链路的LEO卫星系统，本文提出了一种将ATM优势引入其运行的整体组网概念。本文的核心是为周期性时变ISL子网设计一种新的路由方案——离散时间动态虚拟拓扑路由（DT-DVTR），并在ATM上实现，DT-DVTR完全脱机工作，即在系统运行阶段之前。在第一步中，为系统周期的所有连续时间间隔设置虚拟拓扑，在所有源-目标节点对之间提供瞬时可选路径集。在第二步中；根据一定的优化程序，选择了一系列时间间隔内的路径序列，提出了EEO卫星ISL网络中基于atm的DT-DVTR实现，重点讨论了优化方案，并以ISL拓扑为例评估了延迟抖动的性能。
Satellite systems are going Co build a pall of the future personal communications infrastructure. The first-generation candidates for satellite personal communication networks (S-PCN) will rely on low earth orbit (LEG) and medium earth orbit (MEG) constellations. A noticeable trend in this held Is toward broadband services and the use of ATM.For LEO satellite systems employing intersatellite links (ISL's), this paper proposes an overall networking concept that introduces the strengths Of ATM to their operation. The core of the paper is the design of a new routing scheme for the periodically time-variant ISL subnetwork, discrete-time dynamic virtual topology routing (DT-DVTR), and its ATM implementation, DT-DVTR works completely off line, i.e., prior to the operational phase of the system. In a first step, a virtual topology is set up for all successive time intervals of the system period, providing instantaneous sets of alternative paths between all source-destination node pairs. In the second step; path sequences over a series of time intervals are chosen front that according to certain optimization procedures, An ATM-based implementation of DT-DVTR in EEO satellite ISL, networks if presented,vith some emphasis on the optimization alternatives, and the performance in terms of delay jitter is evaluated for an example ISL topology.