Real-time traffic routing over a multilayered satellite architecture
Real-time traffic routing over a multilayered satellite architecture
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DOI：
10.1504/ijwmc.2008.019715
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发表时间：
2008-07
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通讯作者：
A. Durresi
中科院分区：
文献类型：
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作者：
A. Durresi
在本文中，我们提出了一种基于约束的实时流量路由策略，在一个多层次的分层卫星架构。在为IP语音（VoIP）等高优先级实时流量设置路由时，要考虑自由空间光学和无线电卫星间链路（ISL）的质量（误码率BER）以及卫星链路的带宽可用性。我们建议有一个单独的队列，实时流量，以保护它被淹没的突发尽力而为的流量。来自多个实时流的分组基于目的地和优先级聚集到同一标签交换路径（LSP）上，并且通过比例丢弃策略彼此屏蔽，其中来自超过其承诺信息速率（CIR）的流的分组在拥塞期间具有高丢弃概率。我们的优先级负载平衡路由算法的性能在一个多层卫星网络进行了模拟和分析。
In this paper, we present a constraint-based routing strategy for real-time traffic over a multilayered hierarchical satellite architecture. Both quality (Bit-Error Rate BER) on free-space optical and radio Inter-Satellite Links (ISLs) and bandwidth availability on satellite links are taken into account when setting up routes for high-priority for real-time traffic such as Voice over IP (VoIP). We propose to have a separate queue for real-time traffic to protect it from being swamped by bursty best-effort traffic. Packets from several real-time flows are aggregated onto the same Label Switched Path (LSP) based on destination and priority, and are shielded from each other by a proportional dropping policy, where packets from flows exceeding their Committed Information Rate (CIR) have high dropping probability during congestion. The performance of our prioritised load balancing routing algorithm on a multilayered satellite network is simulated and analysed.