Alternative protocols for femtocell backbone security

Vaněk, Tomáš; Rohlik, Matej

doi:10.1109/wmnc.2011.6097239

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…8 show additional overhead generated by all HSS schemes over the backhaul when compared to the OSS and the USS. Note the size of each signalling message with consideration of overhead from all layers of protocol stack is approximately 800 bits [28]. The highest backhaul overhead is generated be centralized HSS-TWC scheme and is up to 33.3 kbit/s.…”

Section: Simulation Resultsmentioning

confidence: 99%

Distributed Hybrid Spectrum Access for Cognitive Femtocells in 5G Mobile Networks

Mach

Bečvář

Vondra

2016

ElAEE

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The femto access points (FAPs) with cognitive capabilities, also known as cognitive FAPs, are able to efficiently mitigate interference in two-tier heterogeneous networks. Hence, the concept of cognitive FAPs can be seen as one of the key enablers for future 5G networks, where high density of FAPs is foreseen. However, conventional overlay and underlay spectrum sharing strategies enabling the cognitive FAPs to access spectrum of macrocells have several drawbacks. The main disadvantage of the former one is that its efficiency fully depends on the activity of macrocell users and insufficient resources can remain for the users of the FAP. The main weakness of the latter one is that it can result in low transmission efficiency because transmission power level of the FAPs is restricted. In this paper, we propose a novel hybrid spectrum sharing that allows the FAPs to use both overlay and underlay strategies simultaneously and, thus, increase performance of FAPs' users. The proposed scheme is fully distributed since the FAPs allocate resources autonomously. The results show that the proposed algorithm is able to significantly outperform competitive schemes in terms of served traffic for femtocell users and, simultaneously, served traffic for macrocell users is intact.

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Section: Simulation Resultsmentioning

confidence: 99%

Distributed Hybrid Spectrum Access for Cognitive Femtocells in 5G Mobile Networks

Mach

Bečvář

Vondra

2016

ElAEE

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“…The second part of the overhead is an overhead generated by the SCeNBs in order to coordinate their transmission power (labeled in the evaluations as the CaPC signaling overhead). The size of each exchanged message with consideration of overhead from all layers of protocol stack is approximately 800 bits .…”

Section: Simulation Methodologymentioning

confidence: 99%

Cloud‐aware power control for real‐time application offloading in mobile edge computing

Mach

Bečvář

2015

Trans. Emerging Tel. Tech.

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Running computationally demanding real‐time applications at the mobile user equipment (UE) is complicated because of limited battery life time of the UEs. One solution is to offload demanding computing tasks to a centralized cloud. Nevertheless, this option introduces significant delay consisting in delivery of the offloaded tasks to the cloud and back. Such delay is inconvenient for real‐time applications. To cope with high delay, a concept of mobile edge computing has been introduced. The feasible way enabling mobile edge computing is to enhance the small cell base stations (SCeNBs) with computing capabilities. However, a high density of the SCeNBs together with even low mobility of users can result in often outage situation or handover when delay sensitive data cannot be delivered from the computing SCeNBs in time and become irrelevant. In this paper, we propose distributed cloud‐aware power control algorithm, which targets to increase the ratio of delivery of computation results to the UE within required delay. Then, we enhance cloud‐aware power control by adaptive algorithm. This algorithm exploits iterative process to find appropriate time when the power control is triggered in order to further improve the performance of the cloud‐aware power control. The simulations demonstrate notable increase in the ratio of delivered offloaded tasks from the computing SCeNBs comparing with competitive schemes. At the same time, the amount of served data to the users exploiting common, non‐cloud, services is increased. As the proposed solution is distributed, related signaling overhead is negligible. Copyright © 2015 John Wiley & Sons, Ltd.

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“…2). The HeNBs do have connectivity to respective resources (data storages, database servers, and other servers) based on the service offered by the mobile operator [20].…”

Section: B Femtocellsmentioning

confidence: 99%

Broadcast Security in Future Mobile Networks

Rohlik

Vaněk

2014

ElAEE

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A typical broadcast authentication communication within information distribution systems is characterised by plain text communication between nodes, which do not mutually authenticate. Although, the authentication of every incoming message seems to be a very effective way to mitigate a denial of service type attack, such process results into an increase of end-to-end delay. To mitigate this drawback, the broadcast authentication protocols have been proposed. This paper introduces a new improved delay and resource enhanced DREAM (IDARED) scheme, which is based on the DoS resistant efficient authentication mechanism (DREAM) and which provides lower latency results achieved by several parameters optimisation and a split verification queue concept for the end-to-end management data traffic in the next generation femtocell (NGF).

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Alternative protocols for femtocell backbone security

Cited by 6 publications

References 11 publications

Distributed Hybrid Spectrum Access for Cognitive Femtocells in 5G Mobile Networks

Distributed Hybrid Spectrum Access for Cognitive Femtocells in 5G Mobile Networks

Cloud‐aware power control for real‐time application offloading in mobile edge computing

Broadcast Security in Future Mobile Networks

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