Abstract
The sharply increasing amount of data, which are transferred by the satellite network, requires the satellite network to provide quality-of-service (QoS). However, the upsurge in the data flow leads to the network congestion, impeding its ability to offer QoS. Congestion control mechanisms, deployed in the ground networks, have been thoroughly studied. But those deployed in the satellite networks have not been studied yet. As satellite networks are now important supplements to the ground backbone networks, this paper carefully analyzes the current challenges of developing the QoS-oriented congestion control mechanism for satellite networks. On this basis, a consequent mechanism QMCC (QoS-oriented mechanism of congestion control for satellite networks) is described in detail. Under that QMCC, the source nodes utilize an equation to compute the sending rate for each data flow; meanwhile, the intermediate nodes keep detecting real-time package-loss rates for timely adjustments. Simulation results indicate QMCC can provide superior congestion control performance, and raise network throughputs without reducing the QoS effects.
Highlights
Satellite networks provide broader coverage and easier access than conventional ground networks, so they are deemed as important supplements to ground backbone networks
This paper concentrates on the following aspects: we first analyze the reasons why mature congestion control mechanism cannot be transplanted to QoS-based satellite networks (Section 2); a congestion control mechanism QMCC, taking congestion control at both source and intermediate nodes, is illustrated (Section 3); the QoS control strategies of QMCC are further discussed (Section 4); simulations are conducted and relevant results are diagnosed to verify the superiority of QMCC over some mature mechanisms in satellite environments (Section 5); conclusions and future topics are briefly indicated
This paper mainly proposes a QoS-oriented mechanism of congestion control for satellite networks
Summary
Satellite networks provide broader coverage and easier access than conventional ground networks, so they are deemed as important supplements to ground backbone networks. This mechanism is capable of capturing the latest states of network elements (links and nodes) Except for these two classes, some interdisciplinary researches succeed in constructing systematic control models. Core), and MPLS (multiprotocol label switching) [4] Among these mechanisms, DiffServ is the most deeply studied and widely tested, which is confirmed to partly satisfy satellite environment restricts. This paper concentrates on the following aspects: we first analyze the reasons why mature congestion control mechanism cannot be transplanted to QoS-based satellite networks (Section 2); a congestion control mechanism QMCC, taking congestion control at both source and intermediate nodes, is illustrated (Section 3); the QoS control strategies of QMCC are further discussed (Section 4); simulations are conducted and relevant results are diagnosed to verify the superiority of QMCC over some mature mechanisms in satellite environments (Section 5); conclusions and future topics are briefly indicated
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
