The Experts below are selected from a list of 29541 Experts worldwide ranked by ideXlab platform
Fritzjoachim Westphal - One of the best experts on this subject based on the ideXlab platform.
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GLOBECOM - UNIFYing Cloud and Carrier Network Resources: An Architectural View
2015 IEEE Global Communications Conference (GLOBECOM), 2015Co-Authors: Balazs Sonkoly, Mario Kind, Robert Szabo, David Jocha, Janos Czentye, Fritzjoachim WestphalAbstract:Cloud Networks provide various services on top of virtualized compute and storage resources. The flexible operation and optimal usage of the underlying infrastructure are realized by resource orchestration methods and virtualization techniques developed during the recent years. In contrast, service deployment and service provisioning in Carrier Networks have several limitations in terms of flexibility, scalability or optimal resource usage as the built-in mechanisms are strongly coupled to the physical topology and special purpose hardware elements. Network Function Virtualization (NFV) opens the door between cloud and Carrier Networks by providing software-based telecommunication services which can run in virtualized environment on general purpose hardwares. Our main goal is to unify software and Network resources in a common framework. In this paper, we propose a novel architecture supporting automated, dynamic service creation based on a fine-granular service chaining model, SDN and cloud virtualization techniques. First, we introduce the architecture with the main components. Second, the most important benefits are highlighted and compared to other state-of-the-art approaches. Finally, preliminary experiences with our proof-of-concept prototypes are presented.
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unifying cloud and Carrier Network resources an architectural view
Global Communications Conference, 2014Co-Authors: Balazs Sonkoly, Mario Kind, Robert Szabo, David Jocha, Janos Czentye, Fritzjoachim WestphalAbstract:Cloud Networks provide various services on top of virtualized compute and storage resources. The flexible operation and optimal usage of the underlying infrastructure are realized by resource orchestration methods and virtualization techniques developed during the recent years. In contrast, service deployment and service provisioning in Carrier Networks have several limitations in terms of flexibility, scalability or optimal resource usage as the built-in mechanisms are strongly coupled to the physical topology and special purpose hardware elements. Network Function Virtualization (NFV) opens the door between cloud and Carrier Networks by providing software-based telecommunication services which can run in virtualized environment on general purpose hardwares. Our main goal is to unify software and Network resources in a common framework. In this paper, we propose a novel architecture supporting automated, dynamic service creation based on a fine-granular service chaining model, SDN and cloud virtualization techniques. First, we introduce the architecture with the main components. Second, the most important benefits are highlighted and compared to other state-of-the-art approaches. Finally, preliminary experiences with our proof-of-concept prototypes are presented.
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towards unified programmability of cloud and Carrier infrastructure
EWSDN '14 Proceedings of the 2014 Third European Workshop on Software Defined Networks, 2014Co-Authors: Pontus Skoldstrom, Mario Kind, Wolfgang John, Balazs Sonkoly, Fritzjoachim Westphal, Andras Gulyas, Felician Nemeth, Jokin Garay, Eduardo Jacob, David JochaAbstract:The rise of cloud services poses considerable challenges on the control of both cloud and Carrier Network infrastructures. While traditional telecom Network services rely on rather static processes (often involving manual steps), the wide adoption of mobile devices including tablets, smartphones and wearables introduce previously unseen dynamics in the creation, scaling and withdrawal of new services. These phenomena require optimal flexibility in the characterization of services, as well as on the control and orchestration of both Carrier and cloud infrastructure. This paper proposes a unified programmability framework addressing: the unification of Network and cloud resources, the integrated control and management of cloud and Network, the description for programming Networked/cloud services, and the provisioning processes of these services. In addition proofs-of-concept are provided based on existing open source control software components.
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UCC - Unifying Cloud and Carrier Network: EU FP7 Project UNIFY
2013 IEEE ACM 6th International Conference on Utility and Cloud Computing, 2013Co-Authors: András Császár, Catalin Meirosu, Mario Kind, Dimitri Staessens, Wolfgang John, Attila Takács, Gergely Pongracz, Fritzjoachim WestphalAbstract:Telecom providers struggle with low service flexibility, increasing complexity and related costs. Although "cloud" has been an active field of research, there is currently little integration between the vast Networking assets and data centres of telecom providers. UNIFY considers the entire Network, from home Networks up to data centre, as a "unified production environment" supporting virtualization, programmability and automation and guarantee a high level of agility for Network operations and for deploying new, secure and quality services, seamlessly instantiatable across the entire infrastructure. UNIFY focuses on the required enablers and will develop an automated, dynamic service creation platform, leveraging fine-granular service chaining. A service abstraction model and a proper service creation language and a global orchestrator, with novel optimization algorithms, will enable the automatic optimal placement of Networking, computing and storage components across the infrastructure. New management technologies based on experience from DCs, called Service Provider DevOps, will be developed and integrated into the orchestration architecture to cope with the dynamicity of services. The applicability of a universal node based on commodity hardware will be evaluated in order to support both Network functions and traditional data centre workloads, with an investigation of the need of hardware acceleration.
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SplitArchitecture: Applying the Software Defined Networking Concept to Carrier Networks
2012Co-Authors: Mario Kind, Andreas Gladisch, Fritzjoachim Westphal, Steffen ToppAbstract:Software Defined Networking (SDN) and OpenFlow in particular has a lot of interest in the research and the academic communities. The SDN concept evolves current design philosophies and could be assumed as one approach of a future clean slate internet design. Nonetheless, the concept requires some advancement for integration in a Carrier Network environment. The ICT project SPARC, funded by the European Commission, is developing a SplitArchitecture concept in order to close this gap. Based on typical use cases, requirements have been derived and integrated in the process of developing the concept. The service creation for residential customers in access/ aggregation Networks is a first result. Moreover an overview on the improvements by SplitArchitecture for Carrier Networks is provided.
N. Miki - One of the best experts on this subject based on the ideXlab platform.
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Frequency and symbol rate offset compensating algorithms for simultaneous estimation of echo and channel responses
IEEE Transactions on Information Theory, 1998Co-Authors: Weiping Li, Xixian Chen, Yi Wang, N. MikiAbstract:This article addresses two critical problems in designing new full-duplex fast training algorithms for simultaneously estimating echo and channel responses. Although algorithms of this type have been discussed and evaluated in previous work, the proposed algorithms concentrate on coping with the following two problems that were not solved in the previous approaches: (1) the symbol rate difference between the local transmitter and the remote transmitter, and (2) the frequency offsets in both far echo and far signal that are caused by the analog Carrier Network. The performance of the new methods is analyzed in terms of the mean square error. Simulation results are presented to confirm the analysis.
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Full-duplex fast estimation of echo and channel responses in the presence of frequency offsets in both far echo and far signal
IEEE Transactions on Signal Processing, 1997Co-Authors: Weiping Li, Xixian Chen, Yi Wang, N. MikiAbstract:In a previous publication, we proposed a full-duplex fast training procedure for simultaneously estimating echo and channel responses. It reduces the tap-setting time to half of that required by the traditional half-duplex fast training schemes. However, its estimation accuracy may be degraded by the frequency offsets in both far echo and far signal that are caused by the analog Carrier Network. We extend the previous work and develop a new algorithm that can compensate for the phase rotation components introduced by these frequency offsets. The performance of the new method is analyzed in terms of mean-square error. Simulation results are presented to confirm the analysis.
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The frequency and symbol rate offset compensating algorithm for simultaneous estimation of echo and channel responses
Proceedings of GLOBECOM'96. 1996 IEEE Global Telecommunications Conference, 1996Co-Authors: Weiping Li, Xixian Chen, Yi Wang, N. MikiAbstract:This paper addresses two critical problems in designing the new full-duplex fast training algorithm for simultaneously estimating echo and channel responses. Although algorithms of this type have been discussed and evaluated in our previous publication, the proposed algorithm concentrates on the following two problems that were not solved in the previous approaches: (1) the symbol rate difference between the local transmitter and the remote transmitter, and (2) the frequency offsets in both far echo and far signal that are caused by the analog Carrier Network. The performance of the new method is analyzed in terms of mean-square error. Simulation results are presented to confirm the analysis.
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ICASSP - Full-duplex fast estimation of echo and channel responses in the presence of frequency offsets in both far echo and far signal
1996 IEEE International Conference on Acoustics Speech and Signal Processing Conference Proceedings, 1996Co-Authors: Weiping Li, Xixian Chen, Yi Wang, N. MikiAbstract:The problem of reducing the initialization time of the echo cancellers and the channel equalizers in modems is extremely important for high-speed full-duplex data transmission over two-wire lines. In a previous publication Chen et al. (see IEEE Trans. Information Theory, vol.41, no.5, 1995) proposed a full-duplex fast training procedure for simultaneously estimating the echo and channel responses. It reduces the tap-setting time to half of that required by the traditional half-duplex fast training schemes. However, its estimation accuracy may be degraded by the frequency offsets in both the far echo and far signal that are caused by the analog Carrier Network. We extend the previous work and develop a new algorithm that can compensate for the frequency offsets in both the far echo and far signal. The performance of the new method is analyzed in terms of the mean-square error. Simulation results are presented to confirm the analysis.
Mario Kind - One of the best experts on this subject based on the ideXlab platform.
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GLOBECOM - UNIFYing Cloud and Carrier Network Resources: An Architectural View
2015 IEEE Global Communications Conference (GLOBECOM), 2015Co-Authors: Balazs Sonkoly, Mario Kind, Robert Szabo, David Jocha, Janos Czentye, Fritzjoachim WestphalAbstract:Cloud Networks provide various services on top of virtualized compute and storage resources. The flexible operation and optimal usage of the underlying infrastructure are realized by resource orchestration methods and virtualization techniques developed during the recent years. In contrast, service deployment and service provisioning in Carrier Networks have several limitations in terms of flexibility, scalability or optimal resource usage as the built-in mechanisms are strongly coupled to the physical topology and special purpose hardware elements. Network Function Virtualization (NFV) opens the door between cloud and Carrier Networks by providing software-based telecommunication services which can run in virtualized environment on general purpose hardwares. Our main goal is to unify software and Network resources in a common framework. In this paper, we propose a novel architecture supporting automated, dynamic service creation based on a fine-granular service chaining model, SDN and cloud virtualization techniques. First, we introduce the architecture with the main components. Second, the most important benefits are highlighted and compared to other state-of-the-art approaches. Finally, preliminary experiences with our proof-of-concept prototypes are presented.
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unifying cloud and Carrier Network resources an architectural view
Global Communications Conference, 2014Co-Authors: Balazs Sonkoly, Mario Kind, Robert Szabo, David Jocha, Janos Czentye, Fritzjoachim WestphalAbstract:Cloud Networks provide various services on top of virtualized compute and storage resources. The flexible operation and optimal usage of the underlying infrastructure are realized by resource orchestration methods and virtualization techniques developed during the recent years. In contrast, service deployment and service provisioning in Carrier Networks have several limitations in terms of flexibility, scalability or optimal resource usage as the built-in mechanisms are strongly coupled to the physical topology and special purpose hardware elements. Network Function Virtualization (NFV) opens the door between cloud and Carrier Networks by providing software-based telecommunication services which can run in virtualized environment on general purpose hardwares. Our main goal is to unify software and Network resources in a common framework. In this paper, we propose a novel architecture supporting automated, dynamic service creation based on a fine-granular service chaining model, SDN and cloud virtualization techniques. First, we introduce the architecture with the main components. Second, the most important benefits are highlighted and compared to other state-of-the-art approaches. Finally, preliminary experiences with our proof-of-concept prototypes are presented.
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towards unified programmability of cloud and Carrier infrastructure
EWSDN '14 Proceedings of the 2014 Third European Workshop on Software Defined Networks, 2014Co-Authors: Pontus Skoldstrom, Mario Kind, Wolfgang John, Balazs Sonkoly, Fritzjoachim Westphal, Andras Gulyas, Felician Nemeth, Jokin Garay, Eduardo Jacob, David JochaAbstract:The rise of cloud services poses considerable challenges on the control of both cloud and Carrier Network infrastructures. While traditional telecom Network services rely on rather static processes (often involving manual steps), the wide adoption of mobile devices including tablets, smartphones and wearables introduce previously unseen dynamics in the creation, scaling and withdrawal of new services. These phenomena require optimal flexibility in the characterization of services, as well as on the control and orchestration of both Carrier and cloud infrastructure. This paper proposes a unified programmability framework addressing: the unification of Network and cloud resources, the integrated control and management of cloud and Network, the description for programming Networked/cloud services, and the provisioning processes of these services. In addition proofs-of-concept are provided based on existing open source control software components.
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Unifying cloud and Carrier Network: EU FP7 Project UNIFY
Proceedings - 2013 IEEE ACM 6th International Conference on Utility and Cloud Computing UCC 2013, 2013Co-Authors: Andr??s Cs??sz??r, Gergely Pongr??cz, Catalin Meirosu, Mario Kind, Dimitri Staessens, Wolfgang John, Attila Takács, F.-j. WestphalAbstract:Telecom providers struggle with low service flexibility, increasing complexity and related costs. Although "cloud" has been an active field of research, there is currently little integration between the vast Networking assets and data centres of telecom providers. UNIFY considers the entire Network, from home Networks up to data centre, as a "unified production environment" supporting virtualization, programmability and automation and guarantee a high level of agility for Network operations and for deploying new, secure and quality services, seamlessly instantiatable across the entire infrastructure. UNIFY focuses on the required enablers and will develop an automated, dynamic service creation platform, leveraging fine-granular service chaining. A service abstraction model and a proper service creation language and a global orchestrator, with novel optimization algorithms, will enable the automatic optimal placement of Networking, computing and storage components across the infrastructure. New management technologies based on experience from DCs, called Service Provider DevOps, will be developed and integrated into the orchestration architecture to cope with the dynamicity of services. The applicability of a universal node based on commodity hardware will be evaluated in order to support both Network functions and traditional data centre workloads, with an investigation of the need of hardware acceleration.
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UCC - Unifying Cloud and Carrier Network: EU FP7 Project UNIFY
2013 IEEE ACM 6th International Conference on Utility and Cloud Computing, 2013Co-Authors: András Császár, Catalin Meirosu, Mario Kind, Dimitri Staessens, Wolfgang John, Attila Takács, Gergely Pongracz, Fritzjoachim WestphalAbstract:Telecom providers struggle with low service flexibility, increasing complexity and related costs. Although "cloud" has been an active field of research, there is currently little integration between the vast Networking assets and data centres of telecom providers. UNIFY considers the entire Network, from home Networks up to data centre, as a "unified production environment" supporting virtualization, programmability and automation and guarantee a high level of agility for Network operations and for deploying new, secure and quality services, seamlessly instantiatable across the entire infrastructure. UNIFY focuses on the required enablers and will develop an automated, dynamic service creation platform, leveraging fine-granular service chaining. A service abstraction model and a proper service creation language and a global orchestrator, with novel optimization algorithms, will enable the automatic optimal placement of Networking, computing and storage components across the infrastructure. New management technologies based on experience from DCs, called Service Provider DevOps, will be developed and integrated into the orchestration architecture to cope with the dynamicity of services. The applicability of a universal node based on commodity hardware will be evaluated in order to support both Network functions and traditional data centre workloads, with an investigation of the need of hardware acceleration.
David Jocha - One of the best experts on this subject based on the ideXlab platform.
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GLOBECOM - UNIFYing Cloud and Carrier Network Resources: An Architectural View
2015 IEEE Global Communications Conference (GLOBECOM), 2015Co-Authors: Balazs Sonkoly, Mario Kind, Robert Szabo, David Jocha, Janos Czentye, Fritzjoachim WestphalAbstract:Cloud Networks provide various services on top of virtualized compute and storage resources. The flexible operation and optimal usage of the underlying infrastructure are realized by resource orchestration methods and virtualization techniques developed during the recent years. In contrast, service deployment and service provisioning in Carrier Networks have several limitations in terms of flexibility, scalability or optimal resource usage as the built-in mechanisms are strongly coupled to the physical topology and special purpose hardware elements. Network Function Virtualization (NFV) opens the door between cloud and Carrier Networks by providing software-based telecommunication services which can run in virtualized environment on general purpose hardwares. Our main goal is to unify software and Network resources in a common framework. In this paper, we propose a novel architecture supporting automated, dynamic service creation based on a fine-granular service chaining model, SDN and cloud virtualization techniques. First, we introduce the architecture with the main components. Second, the most important benefits are highlighted and compared to other state-of-the-art approaches. Finally, preliminary experiences with our proof-of-concept prototypes are presented.
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unifying cloud and Carrier Network resources an architectural view
Global Communications Conference, 2014Co-Authors: Balazs Sonkoly, Mario Kind, Robert Szabo, David Jocha, Janos Czentye, Fritzjoachim WestphalAbstract:Cloud Networks provide various services on top of virtualized compute and storage resources. The flexible operation and optimal usage of the underlying infrastructure are realized by resource orchestration methods and virtualization techniques developed during the recent years. In contrast, service deployment and service provisioning in Carrier Networks have several limitations in terms of flexibility, scalability or optimal resource usage as the built-in mechanisms are strongly coupled to the physical topology and special purpose hardware elements. Network Function Virtualization (NFV) opens the door between cloud and Carrier Networks by providing software-based telecommunication services which can run in virtualized environment on general purpose hardwares. Our main goal is to unify software and Network resources in a common framework. In this paper, we propose a novel architecture supporting automated, dynamic service creation based on a fine-granular service chaining model, SDN and cloud virtualization techniques. First, we introduce the architecture with the main components. Second, the most important benefits are highlighted and compared to other state-of-the-art approaches. Finally, preliminary experiences with our proof-of-concept prototypes are presented.
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towards unified programmability of cloud and Carrier infrastructure
EWSDN '14 Proceedings of the 2014 Third European Workshop on Software Defined Networks, 2014Co-Authors: Pontus Skoldstrom, Mario Kind, Wolfgang John, Balazs Sonkoly, Fritzjoachim Westphal, Andras Gulyas, Felician Nemeth, Jokin Garay, Eduardo Jacob, David JochaAbstract:The rise of cloud services poses considerable challenges on the control of both cloud and Carrier Network infrastructures. While traditional telecom Network services rely on rather static processes (often involving manual steps), the wide adoption of mobile devices including tablets, smartphones and wearables introduce previously unseen dynamics in the creation, scaling and withdrawal of new services. These phenomena require optimal flexibility in the characterization of services, as well as on the control and orchestration of both Carrier and cloud infrastructure. This paper proposes a unified programmability framework addressing: the unification of Network and cloud resources, the integrated control and management of cloud and Network, the description for programming Networked/cloud services, and the provisioning processes of these services. In addition proofs-of-concept are provided based on existing open source control software components.
Balazs Sonkoly - One of the best experts on this subject based on the ideXlab platform.
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GLOBECOM - UNIFYing Cloud and Carrier Network Resources: An Architectural View
2015 IEEE Global Communications Conference (GLOBECOM), 2015Co-Authors: Balazs Sonkoly, Mario Kind, Robert Szabo, David Jocha, Janos Czentye, Fritzjoachim WestphalAbstract:Cloud Networks provide various services on top of virtualized compute and storage resources. The flexible operation and optimal usage of the underlying infrastructure are realized by resource orchestration methods and virtualization techniques developed during the recent years. In contrast, service deployment and service provisioning in Carrier Networks have several limitations in terms of flexibility, scalability or optimal resource usage as the built-in mechanisms are strongly coupled to the physical topology and special purpose hardware elements. Network Function Virtualization (NFV) opens the door between cloud and Carrier Networks by providing software-based telecommunication services which can run in virtualized environment on general purpose hardwares. Our main goal is to unify software and Network resources in a common framework. In this paper, we propose a novel architecture supporting automated, dynamic service creation based on a fine-granular service chaining model, SDN and cloud virtualization techniques. First, we introduce the architecture with the main components. Second, the most important benefits are highlighted and compared to other state-of-the-art approaches. Finally, preliminary experiences with our proof-of-concept prototypes are presented.
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unifying cloud and Carrier Network resources an architectural view
Global Communications Conference, 2014Co-Authors: Balazs Sonkoly, Mario Kind, Robert Szabo, David Jocha, Janos Czentye, Fritzjoachim WestphalAbstract:Cloud Networks provide various services on top of virtualized compute and storage resources. The flexible operation and optimal usage of the underlying infrastructure are realized by resource orchestration methods and virtualization techniques developed during the recent years. In contrast, service deployment and service provisioning in Carrier Networks have several limitations in terms of flexibility, scalability or optimal resource usage as the built-in mechanisms are strongly coupled to the physical topology and special purpose hardware elements. Network Function Virtualization (NFV) opens the door between cloud and Carrier Networks by providing software-based telecommunication services which can run in virtualized environment on general purpose hardwares. Our main goal is to unify software and Network resources in a common framework. In this paper, we propose a novel architecture supporting automated, dynamic service creation based on a fine-granular service chaining model, SDN and cloud virtualization techniques. First, we introduce the architecture with the main components. Second, the most important benefits are highlighted and compared to other state-of-the-art approaches. Finally, preliminary experiences with our proof-of-concept prototypes are presented.
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towards unified programmability of cloud and Carrier infrastructure
EWSDN '14 Proceedings of the 2014 Third European Workshop on Software Defined Networks, 2014Co-Authors: Pontus Skoldstrom, Mario Kind, Wolfgang John, Balazs Sonkoly, Fritzjoachim Westphal, Andras Gulyas, Felician Nemeth, Jokin Garay, Eduardo Jacob, David JochaAbstract:The rise of cloud services poses considerable challenges on the control of both cloud and Carrier Network infrastructures. While traditional telecom Network services rely on rather static processes (often involving manual steps), the wide adoption of mobile devices including tablets, smartphones and wearables introduce previously unseen dynamics in the creation, scaling and withdrawal of new services. These phenomena require optimal flexibility in the characterization of services, as well as on the control and orchestration of both Carrier and cloud infrastructure. This paper proposes a unified programmability framework addressing: the unification of Network and cloud resources, the integrated control and management of cloud and Network, the description for programming Networked/cloud services, and the provisioning processes of these services. In addition proofs-of-concept are provided based on existing open source control software components.