Nancy Alonistioti | National & Kapodistrian University of Athens (original) (raw)

Papers by Nancy Alonistioti

Research paper thumbnail of Toward spectrum sharing: opportunities and technical enablers

IEEE Communications Magazine, Jul 1, 2015

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Research paper thumbnail of Context-Aware Location Management of Groups of Devices in 5G Networks

Lecture Notes in Computer Science, 2016

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Research paper thumbnail of A Survey of Location Management Mechanisms and an Evaluation of their Applicability for 5G Cellular Networks

Recent advances in communications and networking technology, Jun 9, 2015

ABSTRACT Location management is an important part in mobile cellular networks since the registere... more ABSTRACT Location management is an important part in mobile cellular networks since the registered devices can change location while connected to the network. Location management has been of prime research interest over the past decades and several mechanisms have been proposed for legacy systems. However, these mechanisms have to be revisited in the scope of LTE and especially 5G networks where new usage scenarios emerge. In this paper we examine the suitability of existing solutions for 5G networks. Towards this goal we provide a summary of the existing proposals and also analyze a number of patents to verify what the industry believes as really feasible solutions. Then we pinpoint the problems to be expected in 5G networks, with respect to location management, and we propose a future proof path for the design of new location management schemes.

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Research paper thumbnail of On the Way to Massive Access in 5G: Challenges and Solutions for Massive Machine Communications

Lecture Notes in Computer Science, 2015

ABSTRACT Machine Type Communication (MTC) is expected to play a significant role in fifth generat... more ABSTRACT Machine Type Communication (MTC) is expected to play a significant role in fifth generation (5G) wireless and mobile communication systems. The requirements of such type of communication mainly focus on scalability (i.e., number of supported end-devices) and timing issues. Since existing cellular systems were not designed to support such vast number of devices, it is expected that they will throttle the limited network resources. In this paper, we introduce an effective solution for handling the signalling bottlenecks caused by massive machine communications in future 5G systems. The proposed approach is based on a device classification scheme using the devices’ requirements and position for forming groups of devices with the same or similar device characteristics. Our scheme is analysed, and the evaluation results indicate that the proposed solution yields significant reduction in collisions compared to the standard when MTC devices attempt to access the Random Access CHannel (RACH).

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Research paper thumbnail of Using SDN as a key enabler for co-primary spectrum sharing

ABSTRACT Over the past years the mobile traffic demands and the number of the connected devices h... more ABSTRACT Over the past years the mobile traffic demands and the number of the connected devices have been constantly increasing thus indicating that in the near future the current spectrum usage models may fail to cover user needs. At the same time, spectrum scarcity over several Mobile Network Operators (MNOs) leads to inefficient spectrum usage. Co-primary spectrum sharing is a scheme for trading resources among MNOs, enabling flexible spectrum usage, which is arising as a possible solution to spectrum scarcity. However, up to now the schemes for co-primary shared access are hard to be implemented. The recently introduced concept of Software Defined Networking (SDN) gives the flexibility to MNOs' network configuration and, therefore, is arising as an enabler for efficiently handling spectrum trading. In this paper we present a complete functional architecture aiming at enabling co-primary spectrum sharing among MNOs. We, furthermore, propose a scheme for implementing the introduced architectural scheme, coupled with fully described information flows among the (SDN) network entities. Such solution enables the concurrent reconfiguration (when required) for both core and access network nodes, based on the spectrum trading process.

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Research paper thumbnail of On the Way to Massive Access in 5G: Challenges and Solutions for Massive Machine Communications - (Invited Paper)

ABSTRACT Machine Type Communication (MTC) is expected to play a significant role in fifth generat... more ABSTRACT Machine Type Communication (MTC) is expected to play a significant role in fifth generation (5G) wireless and mobile communication systems. The requirements of such type of communication mainly focus on scalability (i.e., number of supported end-devices) and timing issues. Since existing cellular systems were not designed to support such vast number of devices, it is expected that they will throttle the limited network resources. In this paper, we introduce an effective solution for handling the signalling bottlenecks caused by massive machine communications in future 5G systems. The proposed approach is based on a device classification scheme using the devices’ requirements and position for forming groups of devices with the same or similar device characteristics. Our scheme is analysed, and the evaluation results indicate that the proposed solution yields significant reduction in collisions compared to the standard when MTC devices attempt to access the Random Access CHannel (RACH).

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Research paper thumbnail of A scheme for adaptive self-diagnosis of QoS degradation in future networks

2013 Ifip Ieee International Symposium on Integrated Network Management, 2013

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Research paper thumbnail of Spectrum sharing: A coordination framework enabled by fuzzy logic

2015 International Conference on Computer, Information and Telecommunication Systems (CITS), 2015

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Research paper thumbnail of Using SDN as a key enabler for co-primary spectrum sharing

IISA 2014, The 5th International Conference on Information, Intelligence, Systems and Applications, 2014

ABSTRACT Over the past years the mobile traffic demands and the number of the connected devices h... more ABSTRACT Over the past years the mobile traffic demands and the number of the connected devices have been constantly increasing thus indicating that in the near future the current spectrum usage models may fail to cover user needs. At the same time, spectrum scarcity over several Mobile Network Operators (MNOs) leads to inefficient spectrum usage. Co-primary spectrum sharing is a scheme for trading resources among MNOs, enabling flexible spectrum usage, which is arising as a possible solution to spectrum scarcity. However, up to now the schemes for co-primary shared access are hard to be implemented. The recently introduced concept of Software Defined Networking (SDN) gives the flexibility to MNOs' network configuration and, therefore, is arising as an enabler for efficiently handling spectrum trading. In this paper we present a complete functional architecture aiming at enabling co-primary spectrum sharing among MNOs. We, furthermore, propose a scheme for implementing the introduced architectural scheme, coupled with fully described information flows among the (SDN) network entities. Such solution enables the concurrent reconfiguration (when required) for both core and access network nodes, based on the spectrum trading process.

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Research paper thumbnail of Implementing clustering for vehicular ad-hoc networks in ns-3

Proceedings of the 2015 Workshop on ns-3, 2015

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Research paper thumbnail of Cooperative and Self-Growing Energy-Aware Networks

2010 7th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), 2010

In next generation systems and networks, the incorporation of mechanisms achieving robust, predic... more In next generation systems and networks, the incorporation of mechanisms achieving robust, predictable and self-adaptive behavior with minimum cost will be a key requirement. Towards this goal we introduce the notion of the "self-growing network". The latter, in its initial deployment stage, is limited to a single dedicated purpose (energy-efficient networking, spectrum efficient communications, control and surveillance use, etc) but

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Research paper thumbnail of Enablers for Energy-Aware Cooperative Decision and Control in Wireless Networks

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011

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Research paper thumbnail of Coordination of Self-Organizing Network Mechanisms: Framework and Enablers

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2012

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Research paper thumbnail of Feedback-based learning for self-managed network elements

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops, 2011

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Research paper thumbnail of Evolution of E2R Prototyping Environment

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Research paper thumbnail of Location and Profiling Issues for Personalised Mobile Communications

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Research paper thumbnail of Testing End-to-End Self-Management in a Wireless Future Internet Environment

Lecture Notes in Computer Science, 2011

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Research paper thumbnail of ETSI RRS — The standardization path to next generation cognitive radio systems

2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops, 2010

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Research paper thumbnail of Video-to-Video for e-Health: Use Case, Concepts and Pilot Plan

IFIP Advances in Information and Communication Technology, 2012

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Research paper thumbnail of End-to-End Architecture for Cognitive Reconfigurable Wireless Networks

2007 16th IST Mobile and Wireless Communications Summit, 2007

Reconfigurability is set to be an important facet in the evolving world of mobile and wireless co... more Reconfigurability is set to be an important facet in the evolving world of mobile and wireless communications, through which technologies such as cognitive radio are greatly facilitated. Given advances in the scope and applicability of software functionalities, reconfigurability is increasingly becoming possible at many layers of the protocol stack which would until recently have been maintained only by intransigent fixed

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Research paper thumbnail of Toward spectrum sharing: opportunities and technical enablers

IEEE Communications Magazine, Jul 1, 2015

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Research paper thumbnail of Context-Aware Location Management of Groups of Devices in 5G Networks

Lecture Notes in Computer Science, 2016

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Research paper thumbnail of A Survey of Location Management Mechanisms and an Evaluation of their Applicability for 5G Cellular Networks

Recent advances in communications and networking technology, Jun 9, 2015

ABSTRACT Location management is an important part in mobile cellular networks since the registere... more ABSTRACT Location management is an important part in mobile cellular networks since the registered devices can change location while connected to the network. Location management has been of prime research interest over the past decades and several mechanisms have been proposed for legacy systems. However, these mechanisms have to be revisited in the scope of LTE and especially 5G networks where new usage scenarios emerge. In this paper we examine the suitability of existing solutions for 5G networks. Towards this goal we provide a summary of the existing proposals and also analyze a number of patents to verify what the industry believes as really feasible solutions. Then we pinpoint the problems to be expected in 5G networks, with respect to location management, and we propose a future proof path for the design of new location management schemes.

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Research paper thumbnail of On the Way to Massive Access in 5G: Challenges and Solutions for Massive Machine Communications

Lecture Notes in Computer Science, 2015

ABSTRACT Machine Type Communication (MTC) is expected to play a significant role in fifth generat... more ABSTRACT Machine Type Communication (MTC) is expected to play a significant role in fifth generation (5G) wireless and mobile communication systems. The requirements of such type of communication mainly focus on scalability (i.e., number of supported end-devices) and timing issues. Since existing cellular systems were not designed to support such vast number of devices, it is expected that they will throttle the limited network resources. In this paper, we introduce an effective solution for handling the signalling bottlenecks caused by massive machine communications in future 5G systems. The proposed approach is based on a device classification scheme using the devices’ requirements and position for forming groups of devices with the same or similar device characteristics. Our scheme is analysed, and the evaluation results indicate that the proposed solution yields significant reduction in collisions compared to the standard when MTC devices attempt to access the Random Access CHannel (RACH).

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Research paper thumbnail of Using SDN as a key enabler for co-primary spectrum sharing

ABSTRACT Over the past years the mobile traffic demands and the number of the connected devices h... more ABSTRACT Over the past years the mobile traffic demands and the number of the connected devices have been constantly increasing thus indicating that in the near future the current spectrum usage models may fail to cover user needs. At the same time, spectrum scarcity over several Mobile Network Operators (MNOs) leads to inefficient spectrum usage. Co-primary spectrum sharing is a scheme for trading resources among MNOs, enabling flexible spectrum usage, which is arising as a possible solution to spectrum scarcity. However, up to now the schemes for co-primary shared access are hard to be implemented. The recently introduced concept of Software Defined Networking (SDN) gives the flexibility to MNOs' network configuration and, therefore, is arising as an enabler for efficiently handling spectrum trading. In this paper we present a complete functional architecture aiming at enabling co-primary spectrum sharing among MNOs. We, furthermore, propose a scheme for implementing the introduced architectural scheme, coupled with fully described information flows among the (SDN) network entities. Such solution enables the concurrent reconfiguration (when required) for both core and access network nodes, based on the spectrum trading process.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of On the Way to Massive Access in 5G: Challenges and Solutions for Massive Machine Communications - (Invited Paper)

ABSTRACT Machine Type Communication (MTC) is expected to play a significant role in fifth generat... more ABSTRACT Machine Type Communication (MTC) is expected to play a significant role in fifth generation (5G) wireless and mobile communication systems. The requirements of such type of communication mainly focus on scalability (i.e., number of supported end-devices) and timing issues. Since existing cellular systems were not designed to support such vast number of devices, it is expected that they will throttle the limited network resources. In this paper, we introduce an effective solution for handling the signalling bottlenecks caused by massive machine communications in future 5G systems. The proposed approach is based on a device classification scheme using the devices’ requirements and position for forming groups of devices with the same or similar device characteristics. Our scheme is analysed, and the evaluation results indicate that the proposed solution yields significant reduction in collisions compared to the standard when MTC devices attempt to access the Random Access CHannel (RACH).

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Research paper thumbnail of A scheme for adaptive self-diagnosis of QoS degradation in future networks

2013 Ifip Ieee International Symposium on Integrated Network Management, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Spectrum sharing: A coordination framework enabled by fuzzy logic

2015 International Conference on Computer, Information and Telecommunication Systems (CITS), 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Using SDN as a key enabler for co-primary spectrum sharing

IISA 2014, The 5th International Conference on Information, Intelligence, Systems and Applications, 2014

ABSTRACT Over the past years the mobile traffic demands and the number of the connected devices h... more ABSTRACT Over the past years the mobile traffic demands and the number of the connected devices have been constantly increasing thus indicating that in the near future the current spectrum usage models may fail to cover user needs. At the same time, spectrum scarcity over several Mobile Network Operators (MNOs) leads to inefficient spectrum usage. Co-primary spectrum sharing is a scheme for trading resources among MNOs, enabling flexible spectrum usage, which is arising as a possible solution to spectrum scarcity. However, up to now the schemes for co-primary shared access are hard to be implemented. The recently introduced concept of Software Defined Networking (SDN) gives the flexibility to MNOs' network configuration and, therefore, is arising as an enabler for efficiently handling spectrum trading. In this paper we present a complete functional architecture aiming at enabling co-primary spectrum sharing among MNOs. We, furthermore, propose a scheme for implementing the introduced architectural scheme, coupled with fully described information flows among the (SDN) network entities. Such solution enables the concurrent reconfiguration (when required) for both core and access network nodes, based on the spectrum trading process.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Implementing clustering for vehicular ad-hoc networks in ns-3

Proceedings of the 2015 Workshop on ns-3, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Cooperative and Self-Growing Energy-Aware Networks

2010 7th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), 2010

In next generation systems and networks, the incorporation of mechanisms achieving robust, predic... more In next generation systems and networks, the incorporation of mechanisms achieving robust, predictable and self-adaptive behavior with minimum cost will be a key requirement. Towards this goal we introduce the notion of the "self-growing network". The latter, in its initial deployment stage, is limited to a single dedicated purpose (energy-efficient networking, spectrum efficient communications, control and surveillance use, etc) but

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Research paper thumbnail of Enablers for Energy-Aware Cooperative Decision and Control in Wireless Networks

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Coordination of Self-Organizing Network Mechanisms: Framework and Enablers

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Feedback-based learning for self-managed network elements

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Evolution of E2R Prototyping Environment

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Location and Profiling Issues for Personalised Mobile Communications

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Testing End-to-End Self-Management in a Wireless Future Internet Environment

Lecture Notes in Computer Science, 2011

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Research paper thumbnail of ETSI RRS — The standardization path to next generation cognitive radio systems

2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops, 2010

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Video-to-Video for e-Health: Use Case, Concepts and Pilot Plan

IFIP Advances in Information and Communication Technology, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of End-to-End Architecture for Cognitive Reconfigurable Wireless Networks

2007 16th IST Mobile and Wireless Communications Summit, 2007

Reconfigurability is set to be an important facet in the evolving world of mobile and wireless co... more Reconfigurability is set to be an important facet in the evolving world of mobile and wireless communications, through which technologies such as cognitive radio are greatly facilitated. Given advances in the scope and applicability of software functionalities, reconfigurability is increasingly becoming possible at many layers of the protocol stack which would until recently have been maintained only by intransigent fixed

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