A scheduling strategy to inter-satellite links assignment in GNSS

Yan, Jungang; Xing, Lining; Wang, Pei; Sun, Liping; Chen, Yingwu

doi:10.1016/j.asr.2020.09.023

Cited by 25 publications

(17 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The last two constraints ensure each BDS only establishes one ISL at the same time to meet the symmetry. 2 In the study by Sun et al, 12 they proved the ability of GA to solve this model. Based on MTPM, we assign the optimal path between nodes, and use the set Ξ ( normalt ) = { L 1 … L i … L r } to represent all paths.…”

Section: Parameter Determination Of the Mtpmmentioning

confidence: 98%

“…First, the problem of timeslot link allocation of the BDS is studied by Yan et al 2 To minimize communication delays, a multi-objective optimization model is adopted to enable the ISL planning of global navigation satellite system (GNSS). In the study by Zhang et al, 3 the real orbit model of BD3 satellite is proposed, and the bidirectional ranging of BD3 satellite is studied based on the concept of ground station tracking.…”

Section: Related Workmentioning

confidence: 99%

“…1 However, existing research mainly focuses on the satellite layer, such as timeslot division based on time division multiple access (TDMA), ISL assignment. 2,3 There are few studies that consider the cross-regional communication of the ground gateway, ship, and aircraft. Therefore, when the ground or ocean nodes establish communication links with BD3, the development of a path assignment model to obtain lower link handover times, improve the fairness of BD3 resources, and improve network service quality is the main research of this article.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

BeiDou satellites cross-regional communication path assignment model and resource management

Liu

Zhang

2021

International Journal of Distributed Sensor Networks

View full text Add to dashboard Cite

Time division inter-satellite communication and ranging link assignment of BeiDou satellites have made important progress; however, there is still the unsolved issue of integrated communication between ground gateway, aircraft, or even ship, and the BeiDou satellites. Therefore, in this study, we develop a path assignment model based on the idea of clustering and Markov chain. The optimal path is determined by the objective function based on the maximum transition probability. The transition probability takes into account the communication environment, congestion status, aircraft mobility, and reduces the complexity of path assignment by hiding the topology in the region. At the same time, due to the limited resources of onboard computing, storage and bandwidth, we also design a resource management strategy based on task urgency, aimed at minimizing the unreasonable allocation index, to enable the readjustment of link application resources. Finally, the performance of the model and the strategy in average link handover times, link reliability, resource allocation fairness, and network quality of service is determined by simulation.

show abstract

Section: Parameter Determination Of the Mtpmmentioning

confidence: 98%

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

BeiDou satellites cross-regional communication path assignment model and resource management

Liu

Zhang

2021

International Journal of Distributed Sensor Networks

View full text Add to dashboard Cite

show abstract

“…Since the links between satellite nodes are the basis for inter-satellite operations. The more inter-satellite links satellite nodes have, the more services they can undertake [29,30]. The functionality of the DSAM method is demonstrated from the perspective of satellite operations.…”

Section: Functional Analysis Of Dsam Modelmentioning

confidence: 99%

Evaluation Method of Node Importance in Temporal Satellite Networks Based on Time Slot Correlation

et al. 2021

Preprint

View full text Add to dashboard Cite

Temporal satellite networks can accurately describe the dynamic process of satellite networks by considering the interaction relationship and interaction sequence between satellite nodes. In addition, the measurement of node importance in satellite networks plays a crucial role in understanding the structure and function of the network. The classical supra-adjacency matrix (SAM) temporal model identifies the key nodes in the temporal network to some extent, which ignores the differences of inter-layer connectivity relationships leading to the inability to reflect the dynamic variations of satellite nodes. Therefore, the evaluation method based on time slot correlation is proposed to measure the importance of satellite nodes in this paper. Firstly, the correlation coefficient of time slot nodes is defined to measure the coupling relationship of adjacent time slots. Secondly, the dynamic supra-adjacency matrix (DSAM) temporal network model is proposed considering the correlation between adjacent time slots and the characteristics of link time. Finally, the node importance ranking results in each time slot and a global perspective are obtained by utilizing the eigenvector centrality. Through experimental simulations of the Iridium and Orbcomm constellations, it is demonstrated that the DSAM method has a more accurate recognition rate and is more stable than the SAM method.

show abstract

“…Sun [13] used genetic algorithms to select the best downlink for all invisible satellites. Yan [14] took communication delay and PDOP as optimization goals, and used non-dominated sorting genetic algorithm II (NSGA II) to generate and optimize the satellite sequence of the entire time slot. Li [15] only considered the communication delay as an optimization goal, and Han [16] only considered the topology assignment in the optimal case of PDOP.…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Topology Optimization Strategy for GNSS Inter-satellite Network

HAN¹,

XU²,

SHAO³

et al. 2021

Preprint

View full text Add to dashboard Cite

Inter satellite link (ISL) is an effective way for the global navigation satellite system (GNSS) to reduce its dependence on ground infrastructure, which guarantees constellation orbit determination and satellite communication. When the number of onboard Ka-band ISL antennas is less than that of visible satellites, the inter-satellite link assignment of GNSS causes a problem. For the problem of inter-satellite link scheduling, considering that the result of the allocated link has a feedback effect on the subsequent link assignment as a priori knowledge, an adaptive topology optimization algorithm based on signed variance (ABSV) is proposed. In order to meet the requirements of communication and ranging performance, the time slot is divided into a communication time slot and a ranging time slot. Taking the waiting delay time of satellite communication and PDOP as measurement indexes, the proposed strategy is simulated for 10080 min. The results show that the ranging performance of this strategy is better than other recently published methods, which verifies the effectiveness of signed variance for adaptive link planning and is also beneficial to the survivability of constellation.

show abstract

A scheduling strategy to inter-satellite links assignment in GNSS

Cited by 25 publications

References 23 publications

BeiDou satellites cross-regional communication path assignment model and resource management

BeiDou satellites cross-regional communication path assignment model and resource management

Evaluation Method of Node Importance in Temporal Satellite Networks Based on Time Slot Correlation

An Adaptive Topology Optimization Strategy for GNSS Inter-satellite Network

Contact Info

Product

Resources

About