A Novel Handover Control Strategy Combined with Multi-hop Routing in LEO Satellite Networks

Duan, Chaofan; Feng, Jing; Chang, Haotian; Song, Bing; Xu, Zhikang

doi:10.1109/ipdpsw.2018.00132

Cited by 19 publications

(14 citation statements)

References 10 publications

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“…To ensure connection transfers without harmful interruptions over the heterogeneous wireless access technologies, seamless handover becomes a challenging matter. In [96], a strategy based on positioning has been considered to minimize the delay and to manage the inter-satellite handover in satellite communications (when a handover occurs, the nearest satellite is selected as the access satellite), whereas in [97] stochastic and deterministic optimization problems have been constructed to support handover in heterogeneous aeronautical networks with an SDN controller.…”

Section: Non-terrestrial Network In 5g Systemsmentioning

confidence: 99%

Non-Terrestrial Networks in 5G & Beyond: A Survey

et al. 2020

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Fifth-generation (5G) telecommunication systems are expected to meet the world market demands of accessing and delivering services anywhere and anytime. The Non-Terrestrial Network (NTN) systems are able to satisfy the requests of anywhere and anytime connections by offering wide-area coverage and ensuring service availability, continuity, and scalability. In this work, we review the 3GPP NTN features and their potential for satisfying the user expectations in 5G & beyond networks. The state of the art, current 3GPP research activities, and open issues are summarized to highlight the importance of NTN over the wireless communication landscape. Future research directions are also identified to assess the role of NTN in 5G and beyond systems.

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Section: Non-terrestrial Network In 5g Systemsmentioning

confidence: 99%

Non-Terrestrial Networks in 5G & Beyond: A Survey

et al. 2020

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“…Users will often choose the standard according to actual scenarios in reality. For example, during emergency communications such as earthquakes and typhoons, the maximum service time strategy is preferentially used to reduce the number of handovers and delays [94]. However, if only a single standard is used for switching, it will make users shortsighted.…”

Section: ) Intersatellite Handovermentioning

confidence: 99%

LEO Mega-Constellations for 6G Global Coverage: Challenges and Opportunities

et al. 2021

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Mega-constellations have the potential for providing 6G Internet owing to the unique advantage of global coverage. However, current satellite technologies are not omnipotent. There are still many challenging problems that need to be solved for mega-constellations to support 6G, e.g., efficient resource allocation, gratifying mobility management, and large-scale full-time TT&C (tracking, telemetry, and command). This paper starts with a novel definition of LEO mega-constellations and a brief review regarding the current typical mega-constellations, discussing the development direction of the mega-constellation air interface. Then, the key technologies development status of satellite networks is illustrated and analyzed from five aspects: network protocol, multiple access, satellite handover, TT&C, and interference mitigation, especially their adaptability in mega-constellations for 6G global coverage. Finally, considering the features and requirements of 6G, future challenges for mega-constellations and some potential solutions are proposed.

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“…Accordingly, w req (w req > 0) indicates the urgency of the handover request in formula (3). Similarly, t * req,ij can be obtained by using Z -score standardized methods for t req,ij .…”

Section: Handover Algorithm Based On the Potential Game To Maximizmentioning

confidence: 99%

“…Because reaching a global one is not feasible, we use the local Nash equilibrium [3], [10] in this game. In other words, if all terminals play their local optimal strategies, the strategy profile S forms a local equilibrium.…”

Section: Handover Algorithm Based On the Potential Game To Maximizmentioning

confidence: 99%

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A Satellite Handover Strategy Based on the Potential Game in LEO Satellite Networks

Jin

et al. 2019

IEEE Access

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In a low earth orbit (LEO) satellite network, handover management across satellite spot beams needs to be addressed to decrease handover times while using network resources efficiently since the speed of LEO satellites is much higher than that of mobile nodes. In this paper, we propose a novel satellite handover strategy based on the potential game for mobile terminals in a LEO satellite communication network. To continue communication with the counterpart, the user has to switch among the covered LEO satellites. In a software-defined satellite network (SDSN) architecture, the satellite handover can be viewed as a bipartite graph. To balance the satellite network workload, we propose a terminal random-access algorithm based on the target of userspace maximization. The simulated handover conducted on a typical LEO satellite network, Iridium, corroborates the effectiveness of the proposed handover strategy. INDEX TERMS LEO satellite network, satellite handover, potential game, the bipartite graph, random access.

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A Novel Handover Control Strategy Combined with Multi-hop Routing in LEO Satellite Networks

Cited by 19 publications

References 10 publications

Non-Terrestrial Networks in 5G & Beyond: A Survey

Non-Terrestrial Networks in 5G & Beyond: A Survey

LEO Mega-Constellations for 6G Global Coverage: Challenges and Opportunities

A Satellite Handover Strategy Based on the Potential Game in LEO Satellite Networks

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