SRSV: Efficient Resource Reservation for Satellite Networks Based on Segment Routing

Guaranteeing the Quality of Service (QoS) in a mobile satellite network is an important issue. Existing QoS service models either cannot provide scalable bandwidth resource reservation capabilities or cannot provide a strict QoS guarantee in a fine-grained manner. In this paper, we propose a Satellite networks Resource ReSerVation mechanism (SRSV) based on segment routing: the global bandwidth resource information of the network is maintained by a centralized controller, and the end-to-end services paths are specified by segment routing. By planning the global bandwidth resources by the controller and limiting the access bandwidth rate of the service to a specific value at the ingress node, the corresponding bandwidth resource reservation for the service can be realized. Finally, we evaluate SRSV from the perspective of configuration overhead and delay in taking effect of configuration and verify that SRSV has better performance than existing mechanisms.