A Multi-objective based Inter-Layer Link Allocation Scheme for MEO/LEO Satellite Networks

Huang, Yunxue; Feng, Bohao; Dong, Ping; Tian, Aleteng; Yu, Shui

doi:10.1109/wcnc51071.2022.9771852

Cited by 12 publications

(18 citation statements)

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“…Inequality (22) indicates that RLS i can not charge in umbra, so the harvested energy in t should not exceed the maximum energy amount that can be collected under sunlight. Equation ( 23) is the energy balance constraint.…”

Section: ) Energy Related Constraintsmentioning

confidence: 99%

“…5, these studies' optimization of each time-slot is independent. Therefore, these works mostly adopt a centralized approach to maximize benefits per time-slot, as in [17]- [19], [22], [23], and neglect the difference of observation tasks, as in [17], [18], [22], [23]. Without the link switching interval, strategies' comparison is meaningless since it is out of reality.…”

Section: Comparison With Other Strategiesmentioning

confidence: 99%

“…Lu et al [21] optimized LEO DLSNs with the same inclined orbit from the view of constellation structure. Huang et al [22] proposed an inter-layer link allocation scheme in MEO-LEO DLSNs, based on the weighted sum of multiple objectives. In a network where low-orbit satellites transmit the mission data to ground stations via high-orbit relay satellites, Liu et al [23] proposed a dynamic link allocation scheme for maximizing flow routing.…”

Section: Introductionmentioning

confidence: 99%

“…However, both [20] and [21] focus on the constellations' structures, but are not applicable for remote-sensing satellites in solar synchronous orbits. Besides, to the best of the authors' knowledge, all existing link allocation researches [17]- [19], [22], [23] judged potential links with rough connectable conditions. In addition, they all ignored the link switching time interval, which is necessary for the recapture and track of laser communicators.…”

Section: Introductionmentioning

confidence: 99%

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Task-Aware Distributed Inter-Layer Topology Optimization Method in Resource-Limited LEO-LEO Satellite Networks

Guo¹,

Liu²,

Zhong³

2023

Preprint

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<p>Due to the increasing demand for real-time observation data, remote-sensing satellites can be considered as users to access mega communication constellations, which can constitute a Low Earth Orbit (LEO) Double-Layered Satellite Network (DLSN) composed of Remote-sensing Layer Satellites (RLSs) and Communication Layer Satellites (CLSs). In this LEO DLSN, a Distributed Inter-Layer Topology Optimization (DITO) method is proposed based on time-space relationships between two layers, which can maximize task-aware observation benefits with limited onboard resources. For practical purposes, we take link switching interval constraints into account for the recapture and track of laser communicators. Besides, we put forward a new time-slot division method based on the link switching interval for the linear modeling of the time-sequential coupling problem. With the simulation results in four constellation systems, the proposed distributed interactive method can obtain an optimal solution close to the centralized global solution with much less time. Simulation analysis indicates that the work of this paper can support onboard optimization for future space networks.</p>

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Section: ) Energy Related Constraintsmentioning

confidence: 99%

Section: Comparison With Other Strategiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Task-Aware Distributed Inter-Layer Topology Optimization Method in Resource-Limited LEO-LEO Satellite Networks

Guo¹,

Liu²,

Zhong³

2023

Preprint

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show abstract

“…Reference [16] proposes an efficient scheme for load balancing by using Knapsack and Zipf. Reference [17] formulates the problem as a constrained, multi-objective linear programming problem to maximize the utilization efficiency between satellites. The authors of [18] analyzed the transmission characteristics of terrestrial and back-haul links to propose a greedy-based user association algorithm and a matching algorithm with user grouping for balancing the load by performing multiple iterations between users and cells.…”

Section: Introductionmentioning

confidence: 99%

A Fuzzy-Logic-Based Load Balancing Scheme for a Satellite–Terrestrial Integrated Network

et al. 2022

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With the development of communication systems, users are becoming more widely distributed and require higher speed networks. A satellite–terrestrial integrated network could provide seamless coverage for these users. In previous studies of load balancing, initial access and load balancing are decided on based on signal reception and are performed reactively after the overloading occurs, which may not work well in satellite–terrestrial integrated networks. Therefore, this paper proposes a fuzzy-logic-based load balancing scheme. In this scheme, a fuzzy evaluation metric to pre-evaluate the user’s impact on overload is presented. The fuzzy logic system is constructed based on adaptive neuro fuzzy system, which takes the user’s signal reception, speed and data requirement as inputs. Then, the fuzzy-logic- and reinforcement-learning-based access is proposed to give an access decision for all users in the network to prevent overloading. Due to the large dimensions of action space, the reinforcement learning model is trained by the proposed fuzzy, deep, deterministic policy gradient. Next, the fuzzy-logic-based offloading algorithm is proposed to balance load after overloading. A simulation platform is established to evaluate the performance. Simulation results indicate that the proposed scheme can ensure load balance for a longer time than base line schemes while ensuring data rate of users.

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A systematic review for smart identifier networking

Zhang

Feng

Tian

2022

Sci. China Inf. Sci.

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A Multi-objective based Inter-Layer Link Allocation Scheme for MEO/LEO Satellite Networks

Cited by 12 publications

References 0 publications

Task-Aware Distributed Inter-Layer Topology Optimization Method in Resource-Limited LEO-LEO Satellite Networks

Task-Aware Distributed Inter-Layer Topology Optimization Method in Resource-Limited LEO-LEO Satellite Networks

A Fuzzy-Logic-Based Load Balancing Scheme for a Satellite–Terrestrial Integrated Network

A systematic review for smart identifier networking

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