Service Delivery Models for Converged Satellite-Terrestrial 5G Network Deployment: A Satellite-Assisted CDN Use-Case

Luglio, M.; Romano, Simon Pietro; Roseti, C.; Zampognaro, F.

doi:10.1109/mnet.2018.1800020

Cited by 57 publications

(14 citation statements)

References 3 publications

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“…The optimal joint caching is carried out via a generic algorithm of the original mixed integer linear programming. In [272], a service model is proposed for hybrid terrestrial/satellite networks in order to identify viable alternatives to deploy converged satellite-terrestrial services. Two caching policies, namely the pull-based and the push-based, are studied.…”

Section: B Caching Over Satellitementioning

confidence: 99%

Satellite Communications in the New Space Era: A Survey and Future Challenges

Kodheli

Lagunas

Maturo

et al. 2021

IEEE Commun. Surv. Tutorials

761

428

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Satellite communications (SatComs) have recently entered a period of renewed interest motivated by technological advances and nurtured through private investment and ventures. The present survey aims at capturing the state of the art in SatComs, while highlighting the most promising open research topics. Firstly, the main innovation drivers are motivated, such as new constellation types, on-board processing capabilities, nonterrestrial networks and space-based data collection/processing. Secondly, the most promising applications are described i.e. 5G integration, space communications, Earth observation, aeronautical and maritime tracking and communication. Subsequently, an in-depth literature review is provided across five axes: i) system aspects, ii) air interface, iii) medium access, iv) networking, v) testbeds & prototyping. Finally, a number of future challenges and the respective open research topics are described.

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Section: B Caching Over Satellitementioning

confidence: 99%

Satellite Communications in the New Space Era: A Survey and Future Challenges

Kodheli

Lagunas

Maturo

et al. 2021

IEEE Commun. Surv. Tutorials

761

428

View full text Add to dashboard Cite

show abstract

“…It is considered that content delivery networks (CDNs) are pivotal technical foundation for broadband services like video flow distribution on the Internet. A CDN is a collaborative set of network elements distributed over the Internet, with the aim to support content replication across several mirrored servers/caches [135].…”

Section: Cdn Based Satellite-terrestrial Architecturementioning

confidence: 99%

“…As many requests would point for the same popular content, satellites provide a way for efficient transmission by exploiting both multicast and large coverage features [134], [135]. Together with the satellite's ability of multicasting, the CDN based architecture can take full advantage of caching and edge distribution networks using streaming technologies like MPEG-DASH which improve the performance and provide a satellite assisted terrestrial CDN network [136].…”

Section: Cdn Based Satellite-terrestrial Architecturementioning

confidence: 99%

Convergence of Satellite and Terrestrial Networks: A Comprehensive Survey

et al. 2020

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The explosive growth of various services boosts the innovation and development in terrestrial communication systems for the implementation of the next generation mobile communication networks. However, simply utilizing limited resources in terrestrial communication networks is difficult to support the massive quality of service (QoS) aware requirements and it is hard to guarantee seamless coverage in far remote regions. Leveraging the intrinsic merits of high altitude and the ability of multicasting or broadcasting, satellite communication systems provide an opportunity for novel mobile communication networks with its tight interaction and complementary characteristics to traditional terrestrial networks. It is believed that the convergence of satellite and terrestrial networks can solve the problems existing in current mobile communication systems and make a profound effect on global information dissemination. In this paper, we make a comprehensive survey on the convergence of satellite and terrestrial networks. First, motivations and requirements of satellite-terrestrial network convergence are identified. Then, we summarize related architectures of existing literature, classify the taxonomy of researches on satellite-terrestrial networks, and present the performance evaluation works in different satellite-terrestrial networks. After that, the state-ofthe-art of standardization, projects and the key application areas of satellite-terrestrial networks are also reviewed. Finally, we conclude the survey by highlighting the open issues and future directions.

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“…To further optimize system performance, coded caching and multicast technologies are jointly considered in [42], achieving ''coded multicast gain'' and spatial reuse. An innovative content delivery network involving both satellite and terrestrial trunks was proposed, where edge component is fed by a satellite broadcast/multicast channel for an efficient local in-network caching at micro-centre locations [43], [44].…”

Section: A Related Workmentioning

confidence: 99%

Mobility-Aware Traffic Offloading via Cooperative Coded Edge Caching

2020

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With caching popular contents at the small-cell base stations (SBSs), cooperative edge caching has emerged as an effective approach to offload explosively increasing network traffic from a massive number of users in mobile edge networks (MENs). However, most previous works ignored impact of user mobility on caching strategy, thus having limited practical applications. How to improve the caching strategy by exploiting user mobility is still a challenging problem. Accordingly, in this paper, we propose a mobility-aware and cooperative coded caching (MoCoCoCa) for achieving traffic offloading in MENs, by considering user mobility and hard service deadline constraints. Specifically, we first develop the MoCoCoCa framework to satisfy users' requests locally and conduct the construction of access trajectory set via random walks on a Markov chain, which takes the randomness of contact into account. Then, based on user mobility predictions, we formulate the caching problem into a mixed integer nonlinear programming (MINLP) problem to minimize the load of core network, subject to finiteness of network resources (e.g., storage capacity, transmission rate) and non-uniformity of content popularity constraints. The objective function's submodular property is proved and a cooperative placement algorithm is given, which can achieve (1 − 1 e)-optimality. Furthermore, to adapt the given content placement configuration to the spatio-temporal dynamics of realtime request flow, the original placement problem is decomposed into some independent subproblems of content placement at individual SBSs. Each subproblem is converted into a submodular optimization problem, and a request-aware distributed replacement algorithm with linear computational complexity is proposed. Trace-based simulations and numerical results demonstrate that our proposed caching strategy can offload up to 69% network traffic than existing caching strategies. INDEX TERMS Cooperative edge caching, network traffic offloading, user mobility, submodular function.

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Service Delivery Models for Converged Satellite-Terrestrial 5G Network Deployment: A Satellite-Assisted CDN Use-Case

Cited by 57 publications

References 3 publications

Satellite Communications in the New Space Era: A Survey and Future Challenges

Satellite Communications in the New Space Era: A Survey and Future Challenges

Convergence of Satellite and Terrestrial Networks: A Comprehensive Survey

Mobility-Aware Traffic Offloading via Cooperative Coded Edge Caching

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