Routing in LEO-based satellite networks

Gounder, V.V.; Prakash, Ravi; Abu-Amara, Hosame

doi:10.1109/etwcs.1999.897340

Cited by 97 publications

(54 citation statements)

References 9 publications

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“…The concept of snapshot [6] was firstly introduced to captures the dynamics of a LSN by the changes of physical topology. Once a link is re-established or a link is closed, a snapshot different from the previous one is formed.…”

Section: Network Modelmentioning

confidence: 99%

“…The time interval is determined by the change of the physical topology or other metrics such as propagation delay [4]. For example, the concept of snapshots [6] was introduced to describe the dynamics of LSNs. When a new ISL is added or an already existing ISL is broken, a new snapshot different from the previous one will be formed.…”

Section: Introductionmentioning

confidence: 99%

“…For the routing algorithms based on virtual topology (VP) [4][5][6], [7], [8], [9], the time varying topology is tackled by a discrete time network model. In each time interval, the satellite network is assumed to have a fixed topology.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low-Load Survivable Routing Protocol for LEO Satellite Networks

Lü¹,

Zhao

Sun

et al. 2015

Int J Wireless Inf Networks

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In this paper, we put forward the methods of footprint shift and separation for the virtual topology model of LEO satellite networks, which can reduce the effects of the Polar Regions and cross-seam inter-satellite-links (ISLs) on the virtual topology and improve the utilization of ISLs. Furthermore, a low-load survivable routing protocol called Virtual Snapshot Routing Protocol is proposed for LEO satellite networks. The proposed protocol not only reduces the routing computation and storage overheads, but also provides good routing survivability under random satellite failure. The experimental results confirm our conclusions.

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Section: Network Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low-Load Survivable Routing Protocol for LEO Satellite Networks

Lü¹,

Zhao

Sun

et al. 2015

Int J Wireless Inf Networks

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“…Network model partition satellite period into time slot, in each slot the network topology is stationary within acceptable range of deviation and the route can be calculated before being uploaded. This solution can initialize routing table without wasting satellite real-time computing power and reduce difficulty and complexity on applying routing protocol [20] [21] [22]. This paper adopts Iridium constellation network [23] as research object and the network topology is illustrated in figure 1.…”

Section: Network Model Based On Virtual Topologymentioning

confidence: 99%

Routing in LEO Satellite Networks over Packets Trapped by InterSatellite-Link Switch

Yang¹,

Hu²,

Jin³

et al. 2017

dtcse

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Abstract. LEO (low-earth orbit) satellite networks has dynamic-featured topology in which periodic switch between connectivity and broken-off of ISL (intersatellite link) leads to topological change within switching gap, and forwarding packets would be trapped in satellite cache due to failure original route. Priority-based Rerouting in satellite networks and Shortest Path Set Algorithm with Path Prediction are proposed for sake of less trapped packets by ISL switching. Priority-based rerouting in satellite networks (PR) utilizes virtual topology model to shield dynamic-featured influence, chooses rerouting relay node with highest interplane ISL availability as selection criteria among the intra-orbit neighbors. Shortest Path Set Algorithm with Path Prediction (SPS with path prediction) selects the top three shortest paths as alternative and avoid node with impending interplane ISL failure and make best choice according to predictability of networking state. The two strategies are proved to reduce the trapping rate of forwarding packets.

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“…In this section, we describe the simulation topology and parameters that have been used to compare the performance of LPR, Dijkstra, ELB on Dijkstra and Snapshot [12]. We have used OMNeT++ simulator [13] and developed a constellation of Iridium satellites and the main parameters are shown in Table 2.…”

Section: Simulation Setupmentioning

confidence: 99%

Load-aware and Position-aided Routing in Satellite IP Networks

Wang

Liu

Hu³

2012

INT J COMPUT COMMUN

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Satellite communication is regarded as a promising way to achieve seamless global coverage with an array of advantages over the traditional terrestrial network. However, the non-uniform distribution of users and the highly topological dynamics have been a matter of facts. The traditional load balancing technique is able to guarantee a better traffic distribution around the Inter Satellite Links with heavy loads after considering the non-uniform distribution of users, but it transmits load information passively and fails to provide a fair traffic distribution over the entire constellation. Given the highly topological dynamics, traditional routing protocols may experience the convergence processes frequently or use a large amount of storage to keep the snapshots. This paper proposes a novel routing protocol named LPR for the Satellite IP Networks, which transmits the bottleneck link load information to upstream satellites in a Hop-by-Hop manner actively, to guarantee a better distribution of traffic among satellites. In response, upstream satellites select less congested paths and communicate a portion of data according to the priority of different classes of traffic. In addition, LPR applies the geographical position when selecting the routing path to eliminate the convergence process which may cause the routing tables invalid. Finally, various aspects of performance of LPR have compared with other mechanisms. Our evaluations show that a routing protocol with load-aware and position-aided leads to higher throughput and better traffic distribution compared to the traditional routing protocol and load balancing technique.

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Routing in LEO-based satellite networks

Cited by 97 publications

References 9 publications

Low-Load Survivable Routing Protocol for LEO Satellite Networks

Low-Load Survivable Routing Protocol for LEO Satellite Networks

Routing in LEO Satellite Networks over Packets Trapped by InterSatellite-Link Switch

Load-aware and Position-aided Routing in Satellite IP Networks

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