Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502813
Felipe A. Lopes, Leonidas Lima, M. Santos, R. Fidalgo, S. Fernandes
Software-Defined Networking (SDN) enables applications running on its control plane. The Northbound API allows programmers to develop SDN applications for a number of policy-based network management tasks. However, there is still a clear need for supporting the development of controller-agnostic modeled applications. In this paper, we show how the Model-Driven Networking (MDN), a framework composed of CASE tool and Domain-Specific Modeling Language (DSML), can be a feasible solution to create applications independent from controllers and to enable proper verification of SDN applications. Our evaluation demonstrates that MDN framework is viable for using in real scenarios and independent from SDN controllers. Moreover, our performance tests show that: (i) MDN's code generation is two times faster than other approaches; and (ii) it can validate several constraints and complex topologies at millisecond-timescale.
SDN (Software-Defined Networking)支持在其控制平面上运行应用程序。北向API允许程序员为许多基于策略的网络管理任务开发SDN应用程序。然而，显然仍然需要支持与控制器无关的建模应用程序的开发。在本文中，我们展示了模型驱动网络(MDN)，一个由CASE工具和领域特定建模语言(DSML)组成的框架，如何成为一个可行的解决方案，以创建独立于控制器的应用程序，并实现对SDN应用程序的适当验证。我们的评估表明，MDN框架在实际场景中是可行的，并且独立于SDN控制器。此外，我们的性能测试表明:(i) MDN的代码生成速度比其他方法快两倍;(ii)它可以在毫秒级时间尺度上验证多个约束和复杂的拓扑结构。
{"title":"High-level modeling and application validation for SDN","authors":"Felipe A. Lopes, Leonidas Lima, M. Santos, R. Fidalgo, S. Fernandes","doi":"10.1109/NOMS.2016.7502813","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502813","url":null,"abstract":"Software-Defined Networking (SDN) enables applications running on its control plane. The Northbound API allows programmers to develop SDN applications for a number of policy-based network management tasks. However, there is still a clear need for supporting the development of controller-agnostic modeled applications. In this paper, we show how the Model-Driven Networking (MDN), a framework composed of CASE tool and Domain-Specific Modeling Language (DSML), can be a feasible solution to create applications independent from controllers and to enable proper verification of SDN applications. Our evaluation demonstrates that MDN framework is viable for using in real scenarios and independent from SDN controllers. Moreover, our performance tests show that: (i) MDN's code generation is two times faster than other approaches; and (ii) it can validate several constraints and complex topologies at millisecond-timescale.","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134294847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502987
P. Ahmadi, Razie Kaviani, I. Gholampour, M. Tabandeh
In this paper, the topic model is adopted to learn traffic phases from video sequence. Phase detection is applied to determine where a video clip is in the traffic light sequence. Each video clip is labeled by a certain traffic phase, based on which, videos are segmented clip by clip. Using topic models, without any prior knowledge of the traffic rules, activities are detected as distributions over quantized optical flow vectors. Then, traffic phases are discovered as clusters over activities according to the traffic signals. We employ the Fully Sparse Topic Model (FSTM) as the topic model. The results show that our method can successfully discover both activities and traffic phases which make veracious description and perception of traffic scenes.
{"title":"Temporal segmentation of traffic videos based on traffic phase discovery","authors":"P. Ahmadi, Razie Kaviani, I. Gholampour, M. Tabandeh","doi":"10.1109/NOMS.2016.7502987","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502987","url":null,"abstract":"In this paper, the topic model is adopted to learn traffic phases from video sequence. Phase detection is applied to determine where a video clip is in the traffic light sequence. Each video clip is labeled by a certain traffic phase, based on which, videos are segmented clip by clip. Using topic models, without any prior knowledge of the traffic rules, activities are detected as distributions over quantized optical flow vectors. Then, traffic phases are discovered as clusters over activities according to the traffic signals. We employ the Fully Sparse Topic Model (FSTM) as the topic model. The results show that our method can successfully discover both activities and traffic phases which make veracious description and perception of traffic scenes.","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133339526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502884
Jérémie Leguay, L. Maggi, M. Draief, Stefano Paris, S. Chouvardas
By offloading the control plane to powerful computing platforms running on commodity hardware, Software Defined Networking (SDN) unleashes the potential to operate computation intensive machine learning tools and solve complex optimization problems in a centralized fashion. This paper studies such an opportunity under the framework of the centralized SDN Admission Control (AC) problem. We first review and adapt some of the key AC algorithms from the literature, and evaluate their performance under realistic settings. We then propose to take a step further and build an AC meta-algorithm that is able to track the best AC algorithm under unknown traffic conditions. To this aim, we exploit a machine learning technique called Strategic Expert meta-Algorithm (SEA).
{"title":"Admission control with online algorithms in SDN","authors":"Jérémie Leguay, L. Maggi, M. Draief, Stefano Paris, S. Chouvardas","doi":"10.1109/NOMS.2016.7502884","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502884","url":null,"abstract":"By offloading the control plane to powerful computing platforms running on commodity hardware, Software Defined Networking (SDN) unleashes the potential to operate computation intensive machine learning tools and solve complex optimization problems in a centralized fashion. This paper studies such an opportunity under the framework of the centralized SDN Admission Control (AC) problem. We first review and adapt some of the key AC algorithms from the literature, and evaluate their performance under realistic settings. We then propose to take a step further and build an AC meta-algorithm that is able to track the best AC algorithm under unknown traffic conditions. To this aim, we exploit a machine learning technique called Strategic Expert meta-Algorithm (SEA).","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132579217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502932
Hendrik Moens, B. Dhoedt, F. Turck
In recent years, there has been a rising interest in cloud computing, which is often used to offer Software-as-a-Service (SaaS) over the Internet. SaaS can be offered to clients at a lower cost as it is usually multi-tenant: many end users make use of a single application instance, even when they are from different organizations, reducing resource consumption. This however makes it increasingly hard to offer customization and tailoring options for clients, resulting in limited SaaS customizability. Some applications require high customizability, making it impossible to cost-efficiently offer them using cloud computing. In this thesis we design, develop and evaluate multiple approaches for the development and management of highly customizable multi-tenant SaaS, focusing on an approach that decomposes applications into components and on the modeling of the relations between application components, and present a methodology for managing these applications in cloud datacenters and (traditional and Network Function Virtualization-aware) network environments. Extensive evaluations using simulations based on existing commercial applications and generated scenarios show that the proposed approach can be used to increase multi-tenancy and save costs in the management of highly customizable SaaS.
{"title":"Management of customizable Software-as-a-Service in cloud and network environments","authors":"Hendrik Moens, B. Dhoedt, F. Turck","doi":"10.1109/NOMS.2016.7502932","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502932","url":null,"abstract":"In recent years, there has been a rising interest in cloud computing, which is often used to offer Software-as-a-Service (SaaS) over the Internet. SaaS can be offered to clients at a lower cost as it is usually multi-tenant: many end users make use of a single application instance, even when they are from different organizations, reducing resource consumption. This however makes it increasingly hard to offer customization and tailoring options for clients, resulting in limited SaaS customizability. Some applications require high customizability, making it impossible to cost-efficiently offer them using cloud computing. In this thesis we design, develop and evaluate multiple approaches for the development and management of highly customizable multi-tenant SaaS, focusing on an approach that decomposes applications into components and on the modeling of the relations between application components, and present a methodology for managing these applications in cloud datacenters and (traditional and Network Function Virtualization-aware) network environments. Extensive evaluations using simulations based on existing commercial applications and generated scenarios show that the proposed approach can be used to increase multi-tenancy and save costs in the management of highly customizable SaaS.","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129321434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502907
Trung Truong, Q. Fu, Christopher Lorier
Network management is one of the biggest challenges in operating the Internet network today. This is mainly due to its complexity and inflexibility, which result from the tight coupling of the control plane and data plane. Efforts to address this challenge have led to the introduction of Software Defined-Networking (SDN), an emerging architecture in which a logical single controller controls the behaviour of the whole network. This paper presents a solution that exploits the separation to simplify many management tasks. Our work is based on RouteFlow, a framework that enables IP routing and virtualization in OpenFlow networks. We extend the framework to allow live migration of virtual topologies to new physical infrastructure in order to simplify management tasks such as planned maintenance. Our evaluation in emulated environments shows that the proposed system is capable of performing live migration operation with little impacts on network traffic.
{"title":"FlowMap: Improving network management with SDN","authors":"Trung Truong, Q. Fu, Christopher Lorier","doi":"10.1109/NOMS.2016.7502907","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502907","url":null,"abstract":"Network management is one of the biggest challenges in operating the Internet network today. This is mainly due to its complexity and inflexibility, which result from the tight coupling of the control plane and data plane. Efforts to address this challenge have led to the introduction of Software Defined-Networking (SDN), an emerging architecture in which a logical single controller controls the behaviour of the whole network. This paper presents a solution that exploits the separation to simplify many management tasks. Our work is based on RouteFlow, a framework that enables IP routing and virtualization in OpenFlow networks. We extend the framework to allow live migration of virtual topologies to new physical infrastructure in order to simplify management tasks such as planned maintenance. Our evaluation in emulated environments shows that the proposed system is capable of performing live migration operation with little impacts on network traffic.","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116528327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502802
Jeroen van der Hooft, Stefano Petrangeli, N. Bouten, T. Wauters, Rafael Huysegems, T. Bostoen, F. Turck
HTTP Adaptive Streaming (HAS) is the de facto standard for over-the-top video streaming. In HAS, video content is encoded at multiple quality levels and temporally divided into multiple segments. The client can select the quality level for every video segment, allowing smoother playback and a better Quality of Experience (QoE). Although results are promising, current solutions often suffer from high round-trip time (RTT) cycles in mobile networks. This is especially true for scalable video coding (SVC), where multiple requests are required to retrieve a single video segment. Meanwhile, the IETF has standardized the HTTP/2 protocol since February 2015, providing new features that allow a reduction of the page load time in Web browsing. In this paper, we propose a novel approach based on HTTP/2's server push feature to actively push the base layer of live, SVC-encoded content from server to client. This allows to eliminate one RTT cycle for every video segment, which has a significant impact on the user's QoE. Evaluating the proposed approach, we show that compared with HTTP/1.1, an improvement of 65.42% can be achieved for the average video quality in high-RTT networks. Compared to an AVC-based solution, the freeze frequency and duration are reduced by 54.55% and 53.06% respectively, while the loss in video quality is limited to 4.51%. Since playout freezes should be avoided at the cost of a lower video quality, we conclude that the proposed approach beneficially impacts the user's QoE.
{"title":"An HTTP/2 push-based approach for SVC adaptive streaming","authors":"Jeroen van der Hooft, Stefano Petrangeli, N. Bouten, T. Wauters, Rafael Huysegems, T. Bostoen, F. Turck","doi":"10.1109/NOMS.2016.7502802","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502802","url":null,"abstract":"HTTP Adaptive Streaming (HAS) is the de facto standard for over-the-top video streaming. In HAS, video content is encoded at multiple quality levels and temporally divided into multiple segments. The client can select the quality level for every video segment, allowing smoother playback and a better Quality of Experience (QoE). Although results are promising, current solutions often suffer from high round-trip time (RTT) cycles in mobile networks. This is especially true for scalable video coding (SVC), where multiple requests are required to retrieve a single video segment. Meanwhile, the IETF has standardized the HTTP/2 protocol since February 2015, providing new features that allow a reduction of the page load time in Web browsing. In this paper, we propose a novel approach based on HTTP/2's server push feature to actively push the base layer of live, SVC-encoded content from server to client. This allows to eliminate one RTT cycle for every video segment, which has a significant impact on the user's QoE. Evaluating the proposed approach, we show that compared with HTTP/1.1, an improvement of 65.42% can be achieved for the average video quality in high-RTT networks. Compared to an AVC-based solution, the freeze frequency and duration are reduced by 54.55% and 53.06% respectively, while the loss in video quality is limited to 4.51%. Since playout freezes should be avoided at the cost of a lower video quality, we conclude that the proposed approach beneficially impacts the user's QoE.","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121830250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502918
Yuefeng Wang, I. Matta, Nabeel Akhtar
Traditional network management is tied to the TCP/IP architecture, thus it inherits its many limitations. Additionally there is no unified framework for application management, and service providers have to rely on their own ad-hoc mechanisms to manage their application services. The Recursive InterNetwork Architecture (RINA) is our solution to achieve better network management. RINA provides a unified framework for application-driven network management along with built-in mechanisms. It allows the dynamic formation of secure communication containers for service providers in support of various requirements. In this paper, we focus on how application-driven network management can be achieved over the GENI testbed using ProtoRINA, a user-space prototype of RINA. We use video multicast as an example, and experimental results show that application-driven network management enabled by ProtoRINA can achieve better network and application performance.
{"title":"Application-driven network management with ProtoRINA","authors":"Yuefeng Wang, I. Matta, Nabeel Akhtar","doi":"10.1109/NOMS.2016.7502918","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502918","url":null,"abstract":"Traditional network management is tied to the TCP/IP architecture, thus it inherits its many limitations. Additionally there is no unified framework for application management, and service providers have to rely on their own ad-hoc mechanisms to manage their application services. The Recursive InterNetwork Architecture (RINA) is our solution to achieve better network management. RINA provides a unified framework for application-driven network management along with built-in mechanisms. It allows the dynamic formation of secure communication containers for service providers in support of various requirements. In this paper, we focus on how application-driven network management can be achieved over the GENI testbed using ProtoRINA, a user-space prototype of RINA. We use video multicast as an example, and experimental results show that application-driven network management enabled by ProtoRINA can achieve better network and application performance.","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125724125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502885
Amina Boubendir, E. Bertin, N. Simoni
The sharp rise of OTT application services in recent years has called for greater application-to-network visibility. These dynamic application services represent a foremost drive in the communication ecosystem changes. However, the tight coupling between network services and network infrastructures pose challenges for network providers. They need more dynamicity in their network architectures to meet the requirements of application services. SDN and NFV is the combination of networking technologies that facilitate such an evolution. But is it sufficient to allow dynamic application-to-network interactions? In this paper, we rely on SDN-enabled NFV assets as a strong foundation to propose a dynamic and adaptable “Network-as-a-Service” architecture. We leverage our NaaS proposal with a resilient Network Exposition Layer allowing to express offers and demands of network services. To demonstrate the offered features, we propose three architecture deployment models: broad, customized and event-based dynamic model. We then instantiate our architecture within the WebRTC-based communication services, illustrating the collaboration between network providers and Communication Service Providers (CSPs).
{"title":"NaaS architecture through SDN-enabled NFV: Network openness towards web communication service providers","authors":"Amina Boubendir, E. Bertin, N. Simoni","doi":"10.1109/NOMS.2016.7502885","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502885","url":null,"abstract":"The sharp rise of OTT application services in recent years has called for greater application-to-network visibility. These dynamic application services represent a foremost drive in the communication ecosystem changes. However, the tight coupling between network services and network infrastructures pose challenges for network providers. They need more dynamicity in their network architectures to meet the requirements of application services. SDN and NFV is the combination of networking technologies that facilitate such an evolution. But is it sufficient to allow dynamic application-to-network interactions? In this paper, we rely on SDN-enabled NFV assets as a strong foundation to propose a dynamic and adaptable “Network-as-a-Service” architecture. We leverage our NaaS proposal with a resilient Network Exposition Layer allowing to express offers and demands of network services. To demonstrate the offered features, we propose three architecture deployment models: broad, customized and event-based dynamic model. We then instantiate our architecture within the WebRTC-based communication services, illustrating the collaboration between network providers and Communication Service Providers (CSPs).","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123772415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502937
Misbah Uddin, R. Stadler
Networked systems, such as telecom networks and cloud infrastructures, generate and hold vast amounts of configuration and operational data. The goal of this work is to make all this data available through a real-time search process named network search, which will enable new real-time management solutions. The thesis contains several contributions towards engineering a network search system. Key elements of our design are a weakly structured information model that includes spatial properties, a query language that supports location- and schema-oblivious search queries, a peer-to-peer architecture, an echo protocols for scalable query processing, and an indexing protocol for efficient routing for spatial queries. The data against which network search is performed is maintained in local real-time databases close to the data sources. The design follows a bottom-up approach in the sense that the topology for query routing is constructed from the underlying network topology. We have built a prototype of the system on a cloud testbed and developed applications that use network search functionality. Testbed measurements suggest that it is feasible to engineer a network search system that processes queries at low latency and low overhead and that can scale to 100'000 nodes. Simulation results for spatial queries show that query processing achieves response times and incurs overhead close to an optimal protocol, and that it remains accurate under significant churn.
{"title":"A bottom-up approach to real-time search in large networks and clouds","authors":"Misbah Uddin, R. Stadler","doi":"10.1109/NOMS.2016.7502937","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502937","url":null,"abstract":"Networked systems, such as telecom networks and cloud infrastructures, generate and hold vast amounts of configuration and operational data. The goal of this work is to make all this data available through a real-time search process named network search, which will enable new real-time management solutions. The thesis contains several contributions towards engineering a network search system. Key elements of our design are a weakly structured information model that includes spatial properties, a query language that supports location- and schema-oblivious search queries, a peer-to-peer architecture, an echo protocols for scalable query processing, and an indexing protocol for efficient routing for spatial queries. The data against which network search is performed is maintained in local real-time databases close to the data sources. The design follows a bottom-up approach in the sense that the topology for query routing is constructed from the underlying network topology. We have built a prototype of the system on a cloud testbed and developed applications that use network search functionality. Testbed measurements suggest that it is feasible to engineer a network search system that processes queries at low latency and low overhead and that can scale to 100'000 nodes. Simulation results for spatial queries show that query processing achieves response times and incurs overhead close to an optimal protocol, and that it remains accurate under significant churn.","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124945260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-25DOI: 10.1109/NOMS.2016.7502950
Sven Zehl, A. Zubow, A. Wolisz
We demonstrate BIGAP, a novel architecture providing both high network performance as well as seamless handover in Enterprise IEEE 802.11 networks. The former is achieved by assigning different channels to co-located APs to fully utilize the available radio spectrum. The latter is achieved by providing a mechanism for below MAC-layer handover through exploiting the Dynamic Frequency Selection (DFS) capability in IEEE 802.11. In essence BigAP forces clients to change AP whilst they `believe' they are simply changing channel. BIGAP is fully compatible with 802.11 and requires no modifications to the wireless clients.
{"title":"BIGAP — A seamless handover scheme for high performance enterprise IEEE 802.11 networks","authors":"Sven Zehl, A. Zubow, A. Wolisz","doi":"10.1109/NOMS.2016.7502950","DOIUrl":"https://doi.org/10.1109/NOMS.2016.7502950","url":null,"abstract":"We demonstrate BIGAP, a novel architecture providing both high network performance as well as seamless handover in Enterprise IEEE 802.11 networks. The former is achieved by assigning different channels to co-located APs to fully utilize the available radio spectrum. The latter is achieved by providing a mechanism for below MAC-layer handover through exploiting the Dynamic Frequency Selection (DFS) capability in IEEE 802.11. In essence BigAP forces clients to change AP whilst they `believe' they are simply changing channel. BIGAP is fully compatible with 802.11 and requires no modifications to the wireless clients.","PeriodicalId":344879,"journal":{"name":"NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125421708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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