SAT04-3: ELB: An Explicit Load Balancing Routing Protocol for Multi-Hop NGEO Satellite Constellations
SAT04-3: ELB: An Explicit Load Balancing Routing Protocol for Multi-Hop NGEO Satellite Constellations
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DOI：
10.1109/glocom.2006.523
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发表时间：
2006-12
期刊：
影响因子：
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通讯作者：
T. Taleb;Daisuke Mashimo;A. Jamalipour;K. Hashimoto;Y. Nemoto;N. Kato
中科院分区：
文献类型：
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作者：
T. Taleb;Daisuke Mashimo;A. Jamalipour;K. Hashimoto;Y. Nemoto;N. Kato
由于地理和/或气候限制，未来卫星用户群体在全球范围内的密度将呈现显着差异。这种密度差异将导致一些卫星链路拥塞而另一些卫星链路未得到充分利用的情况。为了确保卫星网络流量的智能工程，本文提出了一种路由协议，使相邻卫星能够明确地交换有关其拥塞状态的信息。一颗“即将拥塞”的卫星请求其邻近卫星降低其数据转发速率。作为响应，相邻卫星搜索不包括所讨论的卫星的不太拥挤的路径，并通过检索到的路径传送主要发往该卫星的部分数据。通过这样做，可以避免拥塞以及由此导致的数据包丢失。还可以保证卫星之间更好的流量分配。所提出的方案被称为“显式负载平衡”（ELB）方案。使用网络模拟器进行一组模拟来评估 ELB 方案的性能。在服务质量方面，获得了令人鼓舞的结果：更好的流量分配、更高的吞吐量和更低的丢包率。
Due to geographical and/or climatic constraints, the community of future satellite users will exhibit a significant variance in its density over the Globe. This density variance will yield a scenario where some satellite links are congested while others are underutilized. To ensure an intelligent engineering of traffic over satellite networks, this paper proposes a routing protocol that enables neighboring satellites to explicitly exchange information on their congestion status. A "soon-to-be-congested" satellite requests its neighboring satellites to decrease their data forwarding rates. In response, the neighboring satellites search for less congested paths that do not include the satellite in question and communicate a portion of data, primarily destined to the satellite, via the retrieved paths. By so doing, congestion, and the resulting packet drops, can be avoided. A better distribution of traffic among satellites can be guaranteed as well. The proposed scheme is dubbed "Explicit Load Balancing" (ELB) scheme. A set of simulations is conducted to evaluate the performance of the ELB scheme using the Network Simulator. In terms of Quality of Service, encouraging results are obtained: better traffic distribution, higher throughput, and lower packet drops.