Exploring the routing strategies in next-generation satellite networks

Alagöz, Fatíh; Korçak, Ömer; Jamalipour, Abbas

doi:10.1109/mwc.2007.386616

Cited by 89 publications

(33 citation statements)

References 15 publications

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“…Iridium constellation topology is designed as Walker star constellation type and has fully global coverage. Inherently, the moment satellites move into polar region with high relative velocity thus it's quite difficult to conduct acquisition, pointing and tracking (APT) of intersatellite aerials, ISL is generally judged as broken-off and recovery communication when satellites move out polar region [2], as shown in Fig.2. The periodic state switching between broken-off and validality of ISL in polar region contributes to the time-varying of network topology and simulation application STK(Satellite Toolkit) can simulate the satellite motion and calculate switching moment of ISL,marked as {t1,t2,...,tn-1}.The network model donates slot partition as [t0=0,t1),[t1,t2),...,[tn-1,tn=T].The shortest path algorithm Dijkstra collects path information and calculates into routing table Ti(i=0,1,...,n),i denotes the time slot.…”

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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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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show abstract

“…Currently, most equipment and systems on the ground could not provide real-time data acquisition and data transmission and lack the support of necessary remote sensor networks and communications network for implementing the IoT (Kawamoto et al 2012;Alagöz et al 2007). Satellite technology can be used to solve this problem and support the interconnection and integration of heterogeneous network, things and information sources because various information about geography, environment, space, moving objects could be timely acquired, transmitted and managed (Kawamoto et al 2013;Akyildiz et al 2007).…”

Section: Introductionmentioning

confidence: 99%

A rapid maneuver path planning method with complex sensor pointing constraints in the attitude space

Zhu

et al. 2016

Inf Syst Front

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Large-scale and high-resolution perception is easy to achieve for the physical world, if satellite technology was used in Internet of Things (IoT) in the future. Remote sensing satellite is superior to original method for ground target detection and environmental perception, which could be completed through onboard perception sensors. In the process of detection and perception, satellite needs to frequently perform attitude maneuver in order to meet a variety of task requirements. We have to face with multi-object, multi-sensors constrained maneuver problem. Not only the kinematic and dynamics constraints should been taken into account, but the engineering bounded constraints need to be considered. Moreover, sensor pointing constraints should be elaborated and analyzed reasonably. It is increasingly important how to achieve attitude maneuver in these complex constraints safely and rapidly. Firstly, sensor pointing constraints are translated to quadratic form in order to simplify the representation and computation in the attitude quaternion space. Secondly, we propose an improved RRT planning algorithm for spacecraft, which is able to address a variety of sensor pointing constraints. This algorithm will be used as a global planner, in which the uniformly distributed nodes in the expansion space are randomly sampled and the expanded nodes are screened out based on the comparative evaluation function. Finally, simulation results validate the advantages of the proposed algorithm.

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“…In the world of convergent multimedia communications and Next Generation Networks, satellite systems play an important role as access networks [1][2][3] due to their capability of providing global coverage, and recent research works [4][5][6] are pushing further the limits of this technology. However, the modern end user wants to access multimedia, real-time, and interactive services, demanding increasing amounts of bandwidth, through satellite systems, and with strong quality-of-service (QoS) requirements [7].…”

Section: Introductionmentioning

confidence: 99%

Innovative DAMA algorithm for multimedia DVB-RCS system

Albiol

Aguiar

Baladrón

et al. 2013

J Wireless Com Network

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Satellite is often used as an access network in the Next Generation Networks landscape, where multimedia and real-time services are supported by return channels. However, these satellite return channels are a very limited resource with many terminal stations competing for its use, making its efficient assignation one of the key problems to solve in order to increase network performance. This article presents an innovative implementation of the resource allocation mechanism demand assigned multiple access (DAMA) applied to satellite return channel assignment, which provides support for dynamic allocation and quality-of-service. This resource allocation mechanism has been validated with the special purpose advanced Internet network emulator, using the test lab implementation to optimize traffic mapping and queue parameters directly in the field. The numerical results for the different test cases considered are presented, showing that the DAMA algorithm provided is an efficient way of assigning resources, and also helping in the comparison of the different capacity request mechanisms described in the standard.

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Exploring the routing strategies in next-generation satellite networks

Cited by 89 publications

References 15 publications

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

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

A rapid maneuver path planning method with complex sensor pointing constraints in the attitude space

Innovative DAMA algorithm for multimedia DVB-RCS system

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