Routing Heterogeneous Traffic in Delay-Tolerant Satellite Networks

Delay-tolerant networking (DTN) offers a novel architecture that can be used to enhance store-carry-forward routing in satellite networks. Since these networks can take advantage of scheduled contact plans, distributed algorithms like the Contact Graph Routing (CGR) can be utilized to optimize data...

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Bibliographic Details
Published in:arXiv.org 2023-05
Main Authors: Madoery, Pablo G, Gunes Karabulut Kurt, Yanikomeroglu, Halim, Hu, Peng, Ahmed, Khaled, Martel, Stéphane, Lamontagne, Guillaume
Format: Article
Language:English
Subjects:
Algorithms
Computer networks
Integer programming
Linear programming
Network latency
Optimization models
Satellite networks
Traffic delay
Upper bounds
Online Access:Get full text
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Summary:Delay-tolerant networking (DTN) offers a novel architecture that can be used to enhance store-carry-forward routing in satellite networks. Since these networks can take advantage of scheduled contact plans, distributed algorithms like the Contact Graph Routing (CGR) can be utilized to optimize data delivery performance. However, despite the numerous improvements made to CGR, there is a lack of proposals to prioritize traffic with distinct quality of service (QoS) requirements. This study presents adaptations to CGR to improve QoS-compliant delivery ratio when transmitting traffic with different latency constraints, along with an integer linear programming optimization model that serves as a performance upper bound. The extensive results obtained by simulating different scenarios show that the proposed algorithms can effectively improve the delivery ratio and energy efficiency while meeting latency constraints.
ISSN:2331-8422
DOI:10.48550/arxiv.2304.13501