--- _id: '30790' abstract: - lang: eng text: "Iterative distributed optimization algorithms involve multiple agents that\r\ncommunicate with each other, over time, in order to minimize/maximize a global\r\nobjective. In the presence of unreliable communication networks, the\r\nAge-of-Information (AoI), which measures the freshness of data received, may be\r\nlarge and hence hinder algorithmic convergence. In this paper, we study the\r\nconvergence of general distributed gradient-based optimization algorithms in\r\nthe presence of communication that neither happens periodically nor at\r\nstochastically independent points in time. We show that convergence is\r\nguaranteed provided the random variables associated with the AoI processes are\r\nstochastically dominated by a random variable with finite first moment. This\r\nimproves on previous requirements of boundedness of more than the first moment.\r\nWe then introduce stochastically strongly connected (SSC) networks, a new\r\nstochastic form of strong connectedness for time-varying networks. We show: If\r\nfor any $p \\ge0$ the processes that describe the success of communication\r\nbetween agents in a SSC network are $\\alpha$-mixing with $n^{p-1}\\alpha(n)$\r\nsummable, then the associated AoI processes are stochastically dominated by a\r\nrandom variable with finite $p$-th moment. In combination with our first\r\ncontribution, this implies that distributed stochastic gradient descend\r\nconverges in the presence of AoI, if $\\alpha(n)$ is summable." author: - first_name: Adrian full_name: Redder, Adrian id: '52265' last_name: Redder orcid: https://orcid.org/0000-0001-7391-4688 - first_name: Arunselvan full_name: Ramaswamy, Arunselvan id: '66937' last_name: Ramaswamy orcid: https://orcid.org/ 0000-0001-7547-8111 - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Redder A, Ramaswamy A, Karl H. Distributed gradient-based optimization in the presence of dependent  aperiodic communication. arXiv:220111343. Published online 2022. apa: Redder, A., Ramaswamy, A., & Karl, H. (2022). Distributed gradient-based optimization in the presence of dependent  aperiodic communication. In arXiv:2201.11343. bibtex: '@article{Redder_Ramaswamy_Karl_2022, title={Distributed gradient-based optimization in the presence of dependent  aperiodic communication}, journal={arXiv:2201.11343}, author={Redder, Adrian and Ramaswamy, Arunselvan and Karl, Holger}, year={2022} }' chicago: Redder, Adrian, Arunselvan Ramaswamy, and Holger Karl. “Distributed Gradient-Based Optimization in the Presence of Dependent  Aperiodic Communication.” ArXiv:2201.11343, 2022. ieee: A. Redder, A. Ramaswamy, and H. Karl, “Distributed gradient-based optimization in the presence of dependent  aperiodic communication,” arXiv:2201.11343. 2022. mla: Redder, Adrian, et al. “Distributed Gradient-Based Optimization in the Presence of Dependent  Aperiodic Communication.” ArXiv:2201.11343, 2022. short: A. Redder, A. Ramaswamy, H. Karl, ArXiv:2201.11343 (2022). date_created: 2022-04-06T06:53:38Z date_updated: 2022-11-18T09:33:01Z department: - _id: '75' external_id: arxiv: - '2201.11343' language: - iso: eng project: - _id: '16' name: 'SFB 901 - C4: SFB 901 - Subproject C4' - _id: '1' name: 'SFB 901: SFB 901' - _id: '4' name: 'SFB 901 - C: SFB 901 - Project Area C' publication: arXiv:2201.11343 status: public title: Distributed gradient-based optimization in the presence of dependent aperiodic communication type: preprint user_id: '477' year: '2022' ... --- _id: '30791' abstract: - lang: eng text: "We present sufficient conditions that ensure convergence of the multi-agent\r\nDeep Deterministic Policy Gradient (DDPG) algorithm. It is an example of one of\r\nthe most popular paradigms of Deep Reinforcement Learning (DeepRL) for tackling\r\ncontinuous action spaces: the actor-critic paradigm. In the setting considered\r\nherein, each agent observes a part of the global state space in order to take\r\nlocal actions, for which it receives local rewards. For every agent, DDPG\r\ntrains a local actor (policy) and a local critic (Q-function). The analysis\r\nshows that multi-agent DDPG using neural networks to approximate the local\r\npolicies and critics converge to limits with the following properties: The\r\ncritic limits minimize the average squared Bellman loss; the actor limits\r\nparameterize a policy that maximizes the local critic's approximation of\r\n$Q_i^*$, where $i$ is the agent index. The averaging is with respect to a\r\nprobability distribution over the global state-action space. It captures the\r\nasymptotics of all local training processes. Finally, we extend the analysis to\r\na fully decentralized setting where agents communicate over a wireless network\r\nprone to delays and losses; a typical scenario in, e.g., robotic applications." author: - first_name: Adrian full_name: Redder, Adrian id: '52265' last_name: Redder orcid: https://orcid.org/0000-0001-7391-4688 - first_name: Arunselvan full_name: Ramaswamy, Arunselvan id: '66937' last_name: Ramaswamy orcid: https://orcid.org/ 0000-0001-7547-8111 - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Redder A, Ramaswamy A, Karl H. Asymptotic Convergence of Deep Multi-Agent Actor-Critic Algorithms. arXiv:220100570. Published online 2022. apa: Redder, A., Ramaswamy, A., & Karl, H. (2022). Asymptotic Convergence of Deep Multi-Agent Actor-Critic Algorithms. In arXiv:2201.00570. bibtex: '@article{Redder_Ramaswamy_Karl_2022, title={Asymptotic Convergence of Deep Multi-Agent Actor-Critic Algorithms}, journal={arXiv:2201.00570}, author={Redder, Adrian and Ramaswamy, Arunselvan and Karl, Holger}, year={2022} }' chicago: Redder, Adrian, Arunselvan Ramaswamy, and Holger Karl. “Asymptotic Convergence of Deep Multi-Agent Actor-Critic Algorithms.” ArXiv:2201.00570, 2022. ieee: A. Redder, A. Ramaswamy, and H. Karl, “Asymptotic Convergence of Deep Multi-Agent Actor-Critic Algorithms,” arXiv:2201.00570. 2022. mla: Redder, Adrian, et al. “Asymptotic Convergence of Deep Multi-Agent Actor-Critic Algorithms.” ArXiv:2201.00570, 2022. short: A. Redder, A. Ramaswamy, H. Karl, ArXiv:2201.00570 (2022). date_created: 2022-04-06T06:53:52Z date_updated: 2022-11-18T09:33:42Z department: - _id: '75' external_id: arxiv: - '2201.00570' language: - iso: eng project: - _id: '16' name: 'SFB 901 - C4: SFB 901 - Subproject C4' - _id: '1' name: 'SFB 901: SFB 901' - _id: '4' name: 'SFB 901 - C: SFB 901 - Project Area C' publication: arXiv:2201.00570 status: public title: Asymptotic Convergence of Deep Multi-Agent Actor-Critic Algorithms type: preprint user_id: '477' year: '2022' ... --- _id: '33854' abstract: - lang: eng text: "Macrodiversity is a key technique to increase the capacity of mobile networks. It can be realized using coordinated multipoint (CoMP), simultaneously connecting users to multiple overlapping cells. Selecting which users to serve by how many and which cells is NP-hard but needs to happen continuously in real time as users move and channel state changes. Existing approaches often require strict assumptions about or perfect knowledge of the underlying radio system, its resource allocation scheme, or user movements, none of which is readily available in practice.\r\n\r\nInstead, we propose three novel self-learning and self-adapting approaches using model-free deep reinforcement learning (DRL): DeepCoMP, DD-CoMP, and D3-CoMP. DeepCoMP leverages central observations and control of all users to select cells almost optimally. DD-CoMP and D3-CoMP use multi-agent DRL, which allows distributed, robust, and highly scalable coordination. All three approaches learn from experience and self-adapt to varying scenarios, reaching 2x higher Quality of Experience than other approaches. They have very few built-in assumptions and do not need prior system knowledge, making them more robust to change and better applicable in practice than existing approaches." author: - first_name: Stefan Balthasar full_name: Schneider, Stefan Balthasar id: '35343' last_name: Schneider orcid: 0000-0001-8210-4011 - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Ramin full_name: Khalili, Ramin last_name: Khalili - first_name: Artur full_name: Hecker, Artur last_name: Hecker citation: ama: 'Schneider SB, Karl H, Khalili R, Hecker A. DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning.; 2021.' apa: 'Schneider, S. B., Karl, H., Khalili, R., & Hecker, A. (2021). DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning.' bibtex: '@book{Schneider_Karl_Khalili_Hecker_2021, title={DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning}, author={Schneider, Stefan Balthasar and Karl, Holger and Khalili, Ramin and Hecker, Artur}, year={2021} }' chicago: 'Schneider, Stefan Balthasar, Holger Karl, Ramin Khalili, and Artur Hecker. DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning, 2021.' ieee: 'S. B. Schneider, H. Karl, R. Khalili, and A. Hecker, DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning. 2021.' mla: 'Schneider, Stefan Balthasar, et al. DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning. 2021.' short: 'S.B. Schneider, H. Karl, R. Khalili, A. Hecker, DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning, 2021.' date_created: 2022-10-20T16:44:19Z date_updated: 2022-11-18T09:59:27Z ddc: - '004' department: - _id: '75' file: - access_level: open_access content_type: application/pdf creator: stschn date_created: 2022-10-20T16:41:10Z date_updated: 2022-10-20T16:41:10Z file_id: '33855' file_name: preprint.pdf file_size: 2521656 relation: main_file file_date_updated: 2022-10-20T16:41:10Z has_accepted_license: '1' keyword: - mobility management - coordinated multipoint - CoMP - cell selection - resource management - reinforcement learning - multi agent - MARL - self-learning - self-adaptation - QoE language: - iso: eng oa: '1' project: - _id: '4' name: 'SFB 901 - C: SFB 901 - Project Area C' - _id: '16' name: 'SFB 901 - C4: SFB 901 - Subproject C4' - _id: '1' name: 'SFB 901: SFB 901' status: public title: 'DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning' type: working_paper user_id: '477' year: '2021' ... --- _id: '35889' abstract: - lang: eng text: Network and service coordination is important to provide modern services consisting of multiple interconnected components, e.g., in 5G, network function virtualization (NFV), or cloud and edge computing. In this paper, I outline my dissertation research, which proposes six approaches to automate such network and service coordination. All approaches dynamically react to the current demand and optimize coordination for high service quality and low costs. The approaches range from centralized to distributed methods and from conventional heuristic algorithms and mixed-integer linear programs to machine learning approaches using supervised and reinforcement learning. I briefly discuss their main ideas and advantages over other state-of-the-art approaches and compare strengths and weaknesses. author: - first_name: Stefan Balthasar full_name: Schneider, Stefan Balthasar id: '35343' last_name: Schneider orcid: 0000-0001-8210-4011 citation: ama: Schneider SB. Conventional and Machine Learning Approaches for Network and Service Coordination.; 2021. apa: Schneider, S. B. (2021). Conventional and Machine Learning Approaches for Network and Service Coordination. bibtex: '@book{Schneider_2021, title={Conventional and Machine Learning Approaches for Network and Service Coordination}, author={Schneider, Stefan Balthasar}, year={2021} }' chicago: Schneider, Stefan Balthasar. Conventional and Machine Learning Approaches for Network and Service Coordination, 2021. ieee: S. B. Schneider, Conventional and Machine Learning Approaches for Network and Service Coordination. 2021. mla: Schneider, Stefan Balthasar. Conventional and Machine Learning Approaches for Network and Service Coordination. 2021. short: S.B. Schneider, Conventional and Machine Learning Approaches for Network and Service Coordination, 2021. date_created: 2023-01-10T15:08:50Z date_updated: 2023-01-10T15:09:05Z ddc: - '004' department: - _id: '75' file: - access_level: open_access content_type: application/pdf creator: stschn date_created: 2023-01-10T15:07:03Z date_updated: 2023-01-10T15:07:03Z file_id: '35890' file_name: main.pdf file_size: 133340 relation: main_file file_date_updated: 2023-01-10T15:07:03Z has_accepted_license: '1' keyword: - nfv - coordination - machine learning - reinforcement learning - phd - digest language: - iso: eng oa: '1' project: - _id: '1' name: 'SFB 901: SFB 901' - _id: '4' name: 'SFB 901 - C: SFB 901 - Project Area C' - _id: '16' name: 'SFB 901 - C4: SFB 901 - Subproject C4' status: public title: Conventional and Machine Learning Approaches for Network and Service Coordination type: working_paper user_id: '35343' year: '2021' ... --- _id: '2483' abstract: - lang: eng text: Understanding the behavior of distributed cloud service components in different load situations is important for efficient and automatic management and orchestration of these services. For this purpose and for practical research in distributed cloud computing in general, there is need for benchmarks and experimental data. In this paper, we describe our experiments for characterizing the relationship between resource demands of application components and the expected performance of applica- tions. We present initial results for predicting the interdependence between resource demands and performance characteristics using support vector regression and polynomial regression models. The data gathered from our experiments is publicly available. author: - first_name: Sevil full_name: Dräxler, Sevil id: '31764' last_name: Dräxler - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Marvin full_name: Illian, Marvin last_name: Illian - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Dräxler S, Peuster M, Illian M, Karl H. Towards Predicting Resource Demands and Performance of Distributed Cloud Services. Wien, Darmstadt; 2018. apa: Dräxler, S., Peuster, M., Illian, M., & Karl, H. (2018). Towards Predicting Resource Demands and Performance of Distributed Cloud Services. Wien, Darmstadt. bibtex: '@book{Dräxler_Peuster_Illian_Karl_2018, place={Wien, Darmstadt}, series={KuVS-Fachgespräch Fog Computing 2018}, title={Towards Predicting Resource Demands and Performance of Distributed Cloud Services}, author={Dräxler, Sevil and Peuster, Manuel and Illian, Marvin and Karl, Holger}, year={2018}, collection={KuVS-Fachgespräch Fog Computing 2018} }' chicago: Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl. Towards Predicting Resource Demands and Performance of Distributed Cloud Services. KuVS-Fachgespräch Fog Computing 2018. Wien, Darmstadt, 2018. ieee: S. Dräxler, M. Peuster, M. Illian, and H. Karl, Towards Predicting Resource Demands and Performance of Distributed Cloud Services. Wien, Darmstadt, 2018. mla: Dräxler, Sevil, et al. Towards Predicting Resource Demands and Performance of Distributed Cloud Services. 2018. short: S. Dräxler, M. Peuster, M. Illian, H. Karl, Towards Predicting Resource Demands and Performance of Distributed Cloud Services, Wien, Darmstadt, 2018. date_created: 2018-04-24T12:22:40Z date_updated: 2022-01-06T06:56:38Z ddc: - '000' department: - _id: '75' language: - iso: eng main_file_link: - open_access: '1' url: http://www.infosys.tuwien.ac.at/docs/proceedings.pdf#page=14 oa: '1' place: Wien, Darmstadt project: - _id: '23' grant_number: '762057' name: 5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication_status: published related_material: link: - relation: confirmation url: http://repositum.tuwien.ac.at/obvutwoa/content/titleinfo/2514843 series_title: KuVS-Fachgespräch Fog Computing 2018 status: public title: Towards Predicting Resource Demands and Performance of Distributed Cloud Services type: report user_id: '31764' year: '2018' ... --- _id: '6485' author: - first_name: Raphael Vicente full_name: Rosa, Raphael Vicente last_name: Rosa - first_name: Christian Esteve full_name: Rothenberg, Christian Esteve last_name: Rothenberg - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Rosa RV, Rothenberg CE, Peuster M, Karl H. Methodology for VNF Benchmarking Automation. IETF apa: Rosa, R. V., Rothenberg, C. E., Peuster, M., & Karl, H. (n.d.). Methodology for VNF Benchmarking Automation. IETF. bibtex: '@book{Rosa_Rothenberg_Peuster_Karl, title={Methodology for VNF Benchmarking Automation}, publisher={IETF}, author={Rosa, Raphael Vicente and Rothenberg, Christian Esteve and Peuster, Manuel and Karl, Holger} }' chicago: Rosa, Raphael Vicente, Christian Esteve Rothenberg, Manuel Peuster, and Holger Karl. Methodology for VNF Benchmarking Automation. IETF, n.d. ieee: R. V. Rosa, C. E. Rothenberg, M. Peuster, and H. Karl, Methodology for VNF Benchmarking Automation. IETF. mla: Rosa, Raphael Vicente, et al. Methodology for VNF Benchmarking Automation. IETF. short: R.V. Rosa, C.E. Rothenberg, M. Peuster, H. Karl, Methodology for VNF Benchmarking Automation, IETF, n.d. date_created: 2019-01-04T07:53:50Z date_updated: 2022-01-06T07:03:07Z department: - _id: '75' language: - iso: eng main_file_link: - open_access: '1' url: https://datatracker.ietf.org/doc/draft-rosa-bmwg-vnfbench/ oa: '1' project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps publication_status: draft publisher: IETF report_number: draft-rosa-bmwg-vnfbench status: public title: Methodology for VNF Benchmarking Automation type: report user_id: '13271' year: '2018' ... --- _id: '749' author: - first_name: Sevil full_name: Dräxler, Sevil id: '31764' last_name: Dräxler - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Dräxler S, Karl H. Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model. CoRR. 2015. apa: Dräxler, S., & Karl, H. (2015). Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model. CoRR. bibtex: '@article{Dräxler_Karl_2015, title={Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model}, journal={CoRR}, author={Dräxler, Sevil and Karl, Holger}, year={2015} }' chicago: Dräxler, Sevil, and Holger Karl. “Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model.” CoRR, 2015. ieee: S. Dräxler and H. Karl, “Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model,” CoRR. 2015. mla: Dräxler, Sevil, and Holger Karl. “Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model.” CoRR, 2015. short: S. Dräxler, H. Karl, CoRR (2015). date_created: 2017-11-27T10:22:25Z date_updated: 2022-01-06T07:03:39Z department: - _id: '75' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1503.02442 oa: '1' publication: CoRR status: public title: Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model type: preprint user_id: '31764' year: '2015' ... --- _id: '750' author: - first_name: Martin full_name: Dräxler, Martin last_name: Dräxler - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Dräxler M, Karl H. Dynamic Backhaul Network Configuration in SDN-based Cloud RANs. CoRR. 2015. apa: Dräxler, M., & Karl, H. (2015). Dynamic Backhaul Network Configuration in SDN-based Cloud RANs. CoRR. bibtex: '@article{Dräxler_Karl_2015, title={Dynamic Backhaul Network Configuration in SDN-based Cloud RANs}, journal={CoRR}, author={Dräxler, Martin and Karl, Holger}, year={2015} }' chicago: Dräxler, Martin, and Holger Karl. “Dynamic Backhaul Network Configuration in SDN-Based Cloud RANs.” CoRR, 2015. ieee: M. Dräxler and H. Karl, “Dynamic Backhaul Network Configuration in SDN-based Cloud RANs,” CoRR. 2015. mla: Dräxler, Martin, and Holger Karl. “Dynamic Backhaul Network Configuration in SDN-Based Cloud RANs.” CoRR, 2015. short: M. Dräxler, H. Karl, CoRR (2015). date_created: 2017-11-27T10:22:25Z date_updated: 2022-01-06T07:03:39Z department: - _id: '75' publication: CoRR status: public title: Dynamic Backhaul Network Configuration in SDN-based Cloud RANs type: preprint user_id: '15572' year: '2015' ... --- _id: '766' author: - first_name: Sevil full_name: Mehraghdam, Sevil last_name: Mehraghdam - first_name: Matthias full_name: Keller, Matthias last_name: Keller - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Mehraghdam S, Keller M, Karl H. Specifying and Placing Chains of Virtual Network Functions. CoRR. 2014. apa: Mehraghdam, S., Keller, M., & Karl, H. (2014). Specifying and Placing Chains of Virtual Network Functions. CoRR. bibtex: '@article{Mehraghdam_Keller_Karl_2014, title={Specifying and Placing Chains of Virtual Network Functions}, journal={CoRR}, author={Mehraghdam, Sevil and Keller, Matthias and Karl, Holger}, year={2014} }' chicago: Mehraghdam, Sevil, Matthias Keller, and Holger Karl. “Specifying and Placing Chains of Virtual Network Functions.” CoRR, 2014. ieee: S. Mehraghdam, M. Keller, and H. Karl, “Specifying and Placing Chains of Virtual Network Functions,” CoRR. 2014. mla: Mehraghdam, Sevil, et al. “Specifying and Placing Chains of Virtual Network Functions.” CoRR, 2014. short: S. Mehraghdam, M. Keller, H. Karl, CoRR (2014). date_created: 2017-11-27T10:22:25Z date_updated: 2022-01-06T07:03:43Z department: - _id: '75' publication: CoRR status: public title: Specifying and Placing Chains of Virtual Network Functions type: preprint user_id: '15572' year: '2014' ... --- _id: '767' author: - first_name: Philip full_name: Wette, Philip last_name: Wette - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Wette P, Karl H. DCT2Gen: A Versatile TCP Traffic Generator for Data Centers. CoRR. 2014.' apa: 'Wette, P., & Karl, H. (2014). DCT2Gen: A Versatile TCP Traffic Generator for Data Centers. CoRR.' bibtex: '@article{Wette_Karl_2014, title={DCT2Gen: A Versatile TCP Traffic Generator for Data Centers}, journal={CoRR}, author={Wette, Philip and Karl, Holger}, year={2014} }' chicago: 'Wette, Philip, and Holger Karl. “DCT2Gen: A Versatile TCP Traffic Generator for Data Centers.” CoRR, 2014.' ieee: 'P. Wette and H. Karl, “DCT2Gen: A Versatile TCP Traffic Generator for Data Centers,” CoRR. 2014.' mla: 'Wette, Philip, and Holger Karl. “DCT2Gen: A Versatile TCP Traffic Generator for Data Centers.” CoRR, 2014.' short: P. Wette, H. Karl, CoRR (2014). date_created: 2017-11-27T10:22:25Z date_updated: 2022-01-06T07:03:43Z department: - _id: '75' publication: CoRR status: public title: 'DCT²Gen: A Versatile TCP Traffic Generator for Data Centers' type: preprint user_id: '15572' year: '2014' ... --- _id: '768' author: - first_name: Arne full_name: Schwabe, Arne last_name: Schwabe - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Schwabe A, Karl H. Adding Geographical Embedding to AS Topology Generation. CoRR. 2014. apa: Schwabe, A., & Karl, H. (2014). Adding Geographical Embedding to AS Topology Generation. CoRR. bibtex: '@article{Schwabe_Karl_2014, title={Adding Geographical Embedding to AS Topology Generation}, journal={CoRR}, author={Schwabe, Arne and Karl, Holger}, year={2014} }' chicago: Schwabe, Arne, and Holger Karl. “Adding Geographical Embedding to AS Topology Generation.” CoRR, 2014. ieee: A. Schwabe and H. Karl, “Adding Geographical Embedding to AS Topology Generation,” CoRR. 2014. mla: Schwabe, Arne, and Holger Karl. “Adding Geographical Embedding to AS Topology Generation.” CoRR, 2014. short: A. Schwabe, H. Karl, CoRR (2014). date_created: 2017-11-27T10:22:26Z date_updated: 2022-01-06T07:03:43Z department: - _id: '75' publication: CoRR status: public title: Adding Geographical Embedding to AS Topology Generation type: preprint user_id: '15572' year: '2014' ... --- _id: '1800' author: - first_name: Johannes full_name: Blanckenstein, Johannes last_name: Blanckenstein - first_name: Javier full_name: Garcia-Jimenez, Javier last_name: Garcia-Jimenez - first_name: Jirka full_name: Klaue, Jirka last_name: Klaue - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Blanckenstein J, Garcia-Jimenez J, Klaue J, Karl H. A Scalable Redundant TDMA Protocol for High-Density WSNs Inside an Aircraft. In: Lecture Notes in Electrical Engineering. Cham: Springer International Publishing; 2013:165-177. doi:10.1007/978-3-319-03071-5_18' apa: 'Blanckenstein, J., Garcia-Jimenez, J., Klaue, J., & Karl, H. (2013). A Scalable Redundant TDMA Protocol for High-Density WSNs Inside an Aircraft. In Lecture Notes in Electrical Engineering (pp. 165–177). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-03071-5_18' bibtex: '@inbook{Blanckenstein_Garcia-Jimenez_Klaue_Karl_2013, place={Cham}, title={A Scalable Redundant TDMA Protocol for High-Density WSNs Inside an Aircraft}, DOI={10.1007/978-3-319-03071-5_18}, booktitle={Lecture Notes in Electrical Engineering}, publisher={Springer International Publishing}, author={Blanckenstein, Johannes and Garcia-Jimenez, Javier and Klaue, Jirka and Karl, Holger}, year={2013}, pages={165–177} }' chicago: 'Blanckenstein, Johannes, Javier Garcia-Jimenez, Jirka Klaue, and Holger Karl. “A Scalable Redundant TDMA Protocol for High-Density WSNs Inside an Aircraft.” In Lecture Notes in Electrical Engineering, 165–77. Cham: Springer International Publishing, 2013. https://doi.org/10.1007/978-3-319-03071-5_18.' ieee: 'J. Blanckenstein, J. Garcia-Jimenez, J. Klaue, and H. Karl, “A Scalable Redundant TDMA Protocol for High-Density WSNs Inside an Aircraft,” in Lecture Notes in Electrical Engineering, Cham: Springer International Publishing, 2013, pp. 165–177.' mla: Blanckenstein, Johannes, et al. “A Scalable Redundant TDMA Protocol for High-Density WSNs Inside an Aircraft.” Lecture Notes in Electrical Engineering, Springer International Publishing, 2013, pp. 165–77, doi:10.1007/978-3-319-03071-5_18. short: 'J. Blanckenstein, J. Garcia-Jimenez, J. Klaue, H. Karl, in: Lecture Notes in Electrical Engineering, Springer International Publishing, Cham, 2013, pp. 165–177.' date_created: 2018-03-27T07:45:46Z date_updated: 2022-01-06T06:53:25Z department: - _id: '75' doi: 10.1007/978-3-319-03071-5_18 page: 165-177 place: Cham publication: Lecture Notes in Electrical Engineering publication_identifier: isbn: - '9783319030708' - '9783319030715' issn: - 1876-1100 - 1876-1119 publication_status: published publisher: Springer International Publishing status: public title: A Scalable Redundant TDMA Protocol for High-Density WSNs Inside an Aircraft type: book_chapter user_id: '15572' year: '2013' ... --- _id: '1804' author: - first_name: Antonio full_name: de la Oliva, Antonio last_name: de la Oliva - first_name: Arianna full_name: Morelli, Arianna last_name: Morelli - first_name: Vincenzo full_name: Mancuso, Vincenzo last_name: Mancuso - first_name: Martin full_name: Draexler, Martin last_name: Draexler - first_name: Tim full_name: Hentschel, Tim last_name: Hentschel - first_name: Telemaco full_name: Melia, Telemaco last_name: Melia - first_name: Pierrick full_name: Seite, Pierrick last_name: Seite - first_name: Claudio full_name: Cicconetti, Claudio last_name: Cicconetti citation: ama: 'de la Oliva A, Morelli A, Mancuso V, et al. Denser Networks for the Future Internet, the CROWD Approach. In: Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. Berlin, Heidelberg: Springer Berlin Heidelberg; 2013:28-41. doi:10.1007/978-3-642-37935-2_3' apa: 'de la Oliva, A., Morelli, A., Mancuso, V., Draexler, M., Hentschel, T., Melia, T., … Cicconetti, C. (2013). Denser Networks for the Future Internet, the CROWD Approach. In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (pp. 28–41). Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-37935-2_3' bibtex: '@inbook{de la Oliva_Morelli_Mancuso_Draexler_Hentschel_Melia_Seite_Cicconetti_2013, place={Berlin, Heidelberg}, title={Denser Networks for the Future Internet, the CROWD Approach}, DOI={10.1007/978-3-642-37935-2_3}, booktitle={Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering}, publisher={Springer Berlin Heidelberg}, author={de la Oliva, Antonio and Morelli, Arianna and Mancuso, Vincenzo and Draexler, Martin and Hentschel, Tim and Melia, Telemaco and Seite, Pierrick and Cicconetti, Claudio}, year={2013}, pages={28–41} }' chicago: 'Oliva, Antonio de la, Arianna Morelli, Vincenzo Mancuso, Martin Draexler, Tim Hentschel, Telemaco Melia, Pierrick Seite, and Claudio Cicconetti. “Denser Networks for the Future Internet, the CROWD Approach.” In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 28–41. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. https://doi.org/10.1007/978-3-642-37935-2_3.' ieee: 'A. de la Oliva et al., “Denser Networks for the Future Internet, the CROWD Approach,” in Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Berlin, Heidelberg: Springer Berlin Heidelberg, 2013, pp. 28–41.' mla: de la Oliva, Antonio, et al. “Denser Networks for the Future Internet, the CROWD Approach.” Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer Berlin Heidelberg, 2013, pp. 28–41, doi:10.1007/978-3-642-37935-2_3. short: 'A. de la Oliva, A. Morelli, V. Mancuso, M. Draexler, T. Hentschel, T. Melia, P. Seite, C. Cicconetti, in: Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer Berlin Heidelberg, Berlin, Heidelberg, 2013, pp. 28–41.' date_created: 2018-03-27T08:04:37Z date_updated: 2022-01-06T06:53:25Z department: - _id: '75' doi: 10.1007/978-3-642-37935-2_3 ec_funded: '1' page: 28-41 place: Berlin, Heidelberg project: - _id: '22' call_identifier: FP7-ICT-2011-C grant_number: '318115' name: Connectivity management for eneRgy Optimised Wireless Dense works publication: Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering publication_identifier: isbn: - '9783642379345' - '9783642379352' issn: - 1867-8211 - 1867-822X publication_status: published publisher: Springer Berlin Heidelberg status: public title: Denser Networks for the Future Internet, the CROWD Approach type: book_chapter user_id: '15572' year: '2013' ... --- _id: '781' author: - first_name: Martin full_name: Dräxler, Martin last_name: Dräxler - first_name: Johannes full_name: Blobel, Johannes last_name: Blobel - first_name: Philipp full_name: Dreimann, Philipp last_name: Dreimann - first_name: Stefan full_name: Valentin, Stefan last_name: Valentin - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Dräxler M, Blobel J, Dreimann P, Valentin S, Karl H. Anticipatory Buffer Control and Quality Selection for Wireless Video Streaming. CoRR. 2013. apa: Dräxler, M., Blobel, J., Dreimann, P., Valentin, S., & Karl, H. (2013). Anticipatory Buffer Control and Quality Selection for Wireless Video Streaming. CoRR. bibtex: '@article{Dräxler_Blobel_Dreimann_Valentin_Karl_2013, title={Anticipatory Buffer Control and Quality Selection for Wireless Video Streaming}, journal={CoRR}, author={Dräxler, Martin and Blobel, Johannes and Dreimann, Philipp and Valentin, Stefan and Karl, Holger}, year={2013} }' chicago: Dräxler, Martin, Johannes Blobel, Philipp Dreimann, Stefan Valentin, and Holger Karl. “Anticipatory Buffer Control and Quality Selection for Wireless Video Streaming.” CoRR, 2013. ieee: M. Dräxler, J. Blobel, P. Dreimann, S. Valentin, and H. Karl, “Anticipatory Buffer Control and Quality Selection for Wireless Video Streaming,” CoRR. 2013. mla: Dräxler, Martin, et al. “Anticipatory Buffer Control and Quality Selection for Wireless Video Streaming.” CoRR, 2013. short: M. Dräxler, J. Blobel, P. Dreimann, S. Valentin, H. Karl, CoRR (2013). date_created: 2017-11-27T10:22:26Z date_updated: 2022-01-06T07:03:46Z department: - _id: '75' language: - iso: eng publication: CoRR related_material: link: - relation: confirmation url: https://arxiv.org/abs/1309.5491 status: public title: Anticipatory Buffer Control and Quality Selection for Wireless Video Streaming type: preprint user_id: '126' year: '2013' ... --- _id: '2504' author: - first_name: Rana Azeem M. full_name: Khan, Rana Azeem M. last_name: Khan - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Khan RAM, Karl H. Simulating Cooperative Diversity Protocols for Multi-Hop Wireless and Sensor Networks.; 2012. apa: Khan, R. A. M., & Karl, H. (2012). Simulating Cooperative Diversity Protocols for Multi-hop Wireless and Sensor Networks. bibtex: '@book{Khan_Karl_2012, title={Simulating Cooperative Diversity Protocols for Multi-hop Wireless and Sensor Networks}, author={Khan, Rana Azeem M. and Karl, Holger}, year={2012} }' chicago: Khan, Rana Azeem M., and Holger Karl. Simulating Cooperative Diversity Protocols for Multi-Hop Wireless and Sensor Networks, 2012. ieee: R. A. M. Khan and H. Karl, Simulating Cooperative Diversity Protocols for Multi-hop Wireless and Sensor Networks. 2012. mla: Khan, Rana Azeem M., and Holger Karl. Simulating Cooperative Diversity Protocols for Multi-Hop Wireless and Sensor Networks. 2012. short: R.A.M. Khan, H. Karl, Simulating Cooperative Diversity Protocols for Multi-Hop Wireless and Sensor Networks, 2012. date_created: 2018-04-26T10:33:57Z date_updated: 2022-01-06T06:56:44Z department: - _id: '75' main_file_link: - url: https://pdfs.semanticscholar.org/d44f/54184aee09de1c22906b7515976de801d473.pdf status: public title: Simulating Cooperative Diversity Protocols for Multi-hop Wireless and Sensor Networks type: report user_id: '15572' year: '2012' ... --- _id: '2505' author: - first_name: Christian full_name: Dannewitz, Christian last_name: Dannewitz - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Aditya full_name: Yadav, Aditya last_name: Yadav citation: ama: Dannewitz C, Karl H, Yadav A. Report on Locality in DNS Requests – Evaluation and Impact on Future Internet Architectures.; 2012. apa: Dannewitz, C., Karl, H., & Yadav, A. (2012). Report on Locality in DNS Requests – Evaluation and Impact on Future Internet Architectures. bibtex: '@book{Dannewitz_Karl_Yadav_2012, title={Report on Locality in DNS Requests – Evaluation and Impact on Future Internet Architectures}, author={Dannewitz, Christian and Karl, Holger and Yadav, Aditya}, year={2012} }' chicago: Dannewitz, Christian, Holger Karl, and Aditya Yadav. Report on Locality in DNS Requests – Evaluation and Impact on Future Internet Architectures, 2012. ieee: C. Dannewitz, H. Karl, and A. Yadav, Report on Locality in DNS Requests – Evaluation and Impact on Future Internet Architectures. 2012. mla: Dannewitz, Christian, et al. Report on Locality in DNS Requests – Evaluation and Impact on Future Internet Architectures. 2012. short: C. Dannewitz, H. Karl, A. Yadav, Report on Locality in DNS Requests – Evaluation and Impact on Future Internet Architectures, 2012. date_created: 2018-04-26T10:38:06Z date_updated: 2022-01-06T06:56:44Z ddc: - '000' department: - _id: '75' file: - access_level: closed content_type: application/pdf creator: tabu date_created: 2018-04-26T10:37:47Z date_updated: 2018-04-26T10:37:47Z file_id: '2507' file_name: Dannewitz-Report_on_Locality_in_DNS_Requests.pdf file_size: 284669 relation: main_file success: 1 file_date_updated: 2018-04-26T10:37:47Z has_accepted_license: '1' status: public title: Report on Locality in DNS Requests – Evaluation and Impact on Future Internet Architectures type: report user_id: '15572' year: '2012' ... --- _id: '603' abstract: - lang: eng text: 'Preemptive Routing and Wavelength Assignment (RWA) algorithms preempt established lightpaths in case not enough resources are available to setup a new lightpath in a Wavelength Division Multiplexing (WDM) network. The selection of lightpaths to be preempted relies on internal decisions of the RWA algorithm. Thus, if dedicated properties of the network topology are required by the applications running on the network, these requirements have to be known by the RWA algorithm. Otherwise it might happen that by preempting a particular lightpath these requirements are violated. If, however, these requirements include parameters only known at the nodes running the application, the RWA algorithm cannot evaluate the requirements. For this reason a RWA algorithm is needed which involves its users in the preemption decisions. We present a family of preemptive RWA algorithms for WDM networks. These algorithms have two distinguishing features: a) they can handle dynamic traffic by on-the-fly reconfiguration, and b) users can give feedback for reconfiguration decisions and thus influence the preemption decision of the RWA algorithm, leading to networks which adapt directly to application needs. This is different from traffic engineering where the network is (slowly) adapted to observed traffic patterns. Our algorithms handle various WDM network configurations including networks consisting of heterogeneous WDM hardware. To this end, we are using the layered graph approach together with a newly developed graph model that is used to determine conflicting lightpaths.' author: - first_name: Philip full_name: Wette, Philip last_name: Wette - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Wette P, Karl H. Introducing Feedback to Preemptive Routing and Wavelength Assignment Algorithms for Dynamic Traffic Scenarios. Universität Paderborn; 2012. apa: Wette, P., & Karl, H. (2012). Introducing feedback to preemptive routing and wavelength assignment algorithms for dynamic traffic scenarios. Universität Paderborn. bibtex: '@book{Wette_Karl_2012, title={Introducing feedback to preemptive routing and wavelength assignment algorithms for dynamic traffic scenarios}, publisher={Universität Paderborn}, author={Wette, Philip and Karl, Holger}, year={2012} }' chicago: Wette, Philip, and Holger Karl. Introducing Feedback to Preemptive Routing and Wavelength Assignment Algorithms for Dynamic Traffic Scenarios. Universität Paderborn, 2012. ieee: P. Wette and H. Karl, Introducing feedback to preemptive routing and wavelength assignment algorithms for dynamic traffic scenarios. Universität Paderborn, 2012. mla: Wette, Philip, and Holger Karl. Introducing Feedback to Preemptive Routing and Wavelength Assignment Algorithms for Dynamic Traffic Scenarios. Universität Paderborn, 2012. short: P. Wette, H. Karl, Introducing Feedback to Preemptive Routing and Wavelength Assignment Algorithms for Dynamic Traffic Scenarios, Universität Paderborn, 2012. date_created: 2017-10-17T12:42:49Z date_updated: 2022-01-06T07:02:51Z ddc: - '000' department: - _id: '75' file: - access_level: closed content_type: application/pdf creator: hkarl date_created: 2018-03-09T09:57:26Z date_updated: 2018-03-09T09:57:26Z file_id: '1205' file_name: underlayMod2.pdf file_size: 717326 relation: main_file success: 1 file_date_updated: 2018-03-09T09:57:26Z has_accepted_license: '1' project: - _id: '1' name: SFB 901 - _id: '6' name: SFB 901 - Subprojekt A2 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public title: Introducing feedback to preemptive routing and wavelength assignment algorithms for dynamic traffic scenarios type: report user_id: '126' year: '2012' ... --- _id: '2662' author: - first_name: Christian full_name: Dannewitz, Christian last_name: Dannewitz - first_name: et full_name: al, et last_name: al citation: ama: 'Dannewitz C, al et. How to manage and Search/Retrieve Information Objects. In: Architecture and Design for the Future Internet. ; 2011.' apa: Dannewitz, C., & al, et. (2011). How to manage and Search/Retrieve Information Objects. In Architecture and Design for the Future Internet. bibtex: '@inbook{Dannewitz_al_2011, title={How to manage and Search/Retrieve Information Objects}, booktitle={Architecture and Design for the Future Internet}, author={Dannewitz, Christian and al, et}, year={2011} }' chicago: Dannewitz, Christian, and et al. “How to Manage and Search/Retrieve Information Objects.” In Architecture and Design for the Future Internet, 2011. ieee: C. Dannewitz and et al, “How to manage and Search/Retrieve Information Objects,” in Architecture and Design for the Future Internet, 2011. mla: Dannewitz, Christian, and et al. “How to Manage and Search/Retrieve Information Objects.” Architecture and Design for the Future Internet, 2011. short: 'C. Dannewitz, et al, in: Architecture and Design for the Future Internet, 2011.' date_created: 2018-05-07T08:59:49Z date_updated: 2022-01-06T06:57:23Z department: - _id: '75' main_file_link: - url: https://www.springer.com/de/book/9789048193455 publication: Architecture and Design for the Future Internet status: public title: How to manage and Search/Retrieve Information Objects type: book_chapter user_id: '15572' year: '2011' ... --- _id: '2663' author: - first_name: Christian full_name: Dannewitz, Christian last_name: Dannewitz - first_name: et full_name: al, et last_name: al citation: ama: 'Dannewitz C, al et. Integrating Generic Paths and NetInf. In: Architecture and Design for the Future Internet. ; 2011.' apa: Dannewitz, C., & al, et. (2011). Integrating Generic Paths and NetInf. In Architecture and Design for the Future Internet. bibtex: '@inbook{Dannewitz_al_2011, title={Integrating Generic Paths and NetInf}, booktitle={Architecture and Design for the Future Internet}, author={Dannewitz, Christian and al, et}, year={2011} }' chicago: Dannewitz, Christian, and et al. “Integrating Generic Paths and NetInf.” In Architecture and Design for the Future Internet, 2011. ieee: C. Dannewitz and et al, “Integrating Generic Paths and NetInf,” in Architecture and Design for the Future Internet, 2011. mla: Dannewitz, Christian, and et al. “Integrating Generic Paths and NetInf.” Architecture and Design for the Future Internet, 2011. short: 'C. Dannewitz, et al, in: Architecture and Design for the Future Internet, 2011.' date_created: 2018-05-07T09:23:29Z date_updated: 2022-01-06T06:57:24Z department: - _id: '75' main_file_link: - url: https://www.springer.com/de/book/9789048193455 publication: Architecture and Design for the Future Internet status: public title: Integrating Generic Paths and NetInf type: book_chapter user_id: '15572' year: '2011' ... --- _id: '1838' author: - first_name: Theo full_name: Kanter, Theo last_name: Kanter - first_name: Victor full_name: Kardeby, Victor last_name: Kardeby - first_name: Stefan full_name: Forsström, Stefan last_name: Forsström - first_name: Jamie full_name: Walters, Jamie last_name: Walters citation: ama: 'Kanter T, Kardeby V, Forsström S, Walters J. Scenarios, Research Issues, and Architecture for Ubiquitous Sensing. In: Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. Berlin, Heidelberg: Springer Berlin Heidelberg; 2011:285-297. doi:10.1007/978-3-642-21444-8_25' apa: 'Kanter, T., Kardeby, V., Forsström, S., & Walters, J. (2011). Scenarios, Research Issues, and Architecture for Ubiquitous Sensing. In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (pp. 285–297). Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-21444-8_25' bibtex: '@inbook{Kanter_Kardeby_Forsström_Walters_2011, place={Berlin, Heidelberg}, title={Scenarios, Research Issues, and Architecture for Ubiquitous Sensing}, DOI={10.1007/978-3-642-21444-8_25}, booktitle={Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering}, publisher={Springer Berlin Heidelberg}, author={Kanter, Theo and Kardeby, Victor and Forsström, Stefan and Walters, Jamie}, year={2011}, pages={285–297} }' chicago: 'Kanter, Theo, Victor Kardeby, Stefan Forsström, and Jamie Walters. “Scenarios, Research Issues, and Architecture for Ubiquitous Sensing.” In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 285–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. https://doi.org/10.1007/978-3-642-21444-8_25.' ieee: 'T. Kanter, V. Kardeby, S. Forsström, and J. Walters, “Scenarios, Research Issues, and Architecture for Ubiquitous Sensing,” in Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Berlin, Heidelberg: Springer Berlin Heidelberg, 2011, pp. 285–297.' mla: Kanter, Theo, et al. “Scenarios, Research Issues, and Architecture for Ubiquitous Sensing.” Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer Berlin Heidelberg, 2011, pp. 285–97, doi:10.1007/978-3-642-21444-8_25. short: 'T. Kanter, V. Kardeby, S. Forsström, J. Walters, in: Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer Berlin Heidelberg, Berlin, Heidelberg, 2011, pp. 285–297.' date_created: 2018-03-27T12:48:06Z date_updated: 2022-01-06T06:53:31Z department: - _id: '75' doi: 10.1007/978-3-642-21444-8_25 page: 285-297 place: Berlin, Heidelberg publication: Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering publication_identifier: isbn: - '9783642214431' - '9783642214448' issn: - 1867-8211 - 1867-822X publication_status: published publisher: Springer Berlin Heidelberg status: public title: Scenarios, Research Issues, and Architecture for Ubiquitous Sensing type: book_chapter user_id: '15572' year: '2011' ... --- _id: '1915' author: - first_name: Michael full_name: Savorić, Michael last_name: Savorić - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Adam full_name: Wolisz, Adam last_name: Wolisz citation: ama: 'Savorić M, Karl H, Wolisz A. Selected properties of a joint congestion controller for TCP connections. In: Providing Quality of Service in Heterogeneous Environments, Proceedings of the 18th International Teletraffic Congress - ITC-18. Elsevier; 2010:861-870. doi:10.1016/s1388-3437(03)80235-4' apa: Savorić, M., Karl, H., & Wolisz, A. (2010). Selected properties of a joint congestion controller for TCP connections. In Providing Quality of Service in Heterogeneous Environments, Proceedings of the 18th International Teletraffic Congress - ITC-18 (pp. 861–870). Elsevier. https://doi.org/10.1016/s1388-3437(03)80235-4 bibtex: '@inbook{Savorić_Karl_Wolisz_2010, title={Selected properties of a joint congestion controller for TCP connections}, DOI={10.1016/s1388-3437(03)80235-4}, booktitle={Providing Quality of Service in Heterogeneous Environments, Proceedings of the 18th International Teletraffic Congress - ITC-18}, publisher={Elsevier}, author={Savorić, Michael and Karl, Holger and Wolisz, Adam}, year={2010}, pages={861–870} }' chicago: Savorić, Michael, Holger Karl, and Adam Wolisz. “Selected Properties of a Joint Congestion Controller for TCP Connections.” In Providing Quality of Service in Heterogeneous Environments, Proceedings of the 18th International Teletraffic Congress - ITC-18, 861–70. Elsevier, 2010. https://doi.org/10.1016/s1388-3437(03)80235-4. ieee: M. Savorić, H. Karl, and A. Wolisz, “Selected properties of a joint congestion controller for TCP connections,” in Providing Quality of Service in Heterogeneous Environments, Proceedings of the 18th International Teletraffic Congress - ITC-18, Elsevier, 2010, pp. 861–870. mla: Savorić, Michael, et al. “Selected Properties of a Joint Congestion Controller for TCP Connections.” Providing Quality of Service in Heterogeneous Environments, Proceedings of the 18th International Teletraffic Congress - ITC-18, Elsevier, 2010, pp. 861–70, doi:10.1016/s1388-3437(03)80235-4. short: 'M. Savorić, H. Karl, A. Wolisz, in: Providing Quality of Service in Heterogeneous Environments, Proceedings of the 18th International Teletraffic Congress - ITC-18, Elsevier, 2010, pp. 861–870.' date_created: 2018-03-28T10:37:51Z date_updated: 2022-01-06T06:53:58Z department: - _id: '75' doi: 10.1016/s1388-3437(03)80235-4 page: 861-870 publication: Providing Quality of Service in Heterogeneous Environments, Proceedings of the 18th International Teletraffic Congress - ITC-18 publication_identifier: isbn: - '9780444514554' issn: - 1388-3437 publication_status: published publisher: Elsevier status: public title: Selected properties of a joint congestion controller for TCP connections type: book_chapter user_id: '15572' year: '2010' ... --- _id: '1830' author: - first_name: Thorsten full_name: Biermann, Thorsten last_name: Biermann - first_name: Arne full_name: Schwabe, Arne last_name: Schwabe - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Biermann T, Schwabe A, Karl H. Creating Butterflies in the Core – A Network Coding Extension for MPLS/RSVP-TE. In: NETWORKING 2009. Berlin, Heidelberg: Springer Berlin Heidelberg; 2009:883-894. doi:10.1007/978-3-642-01399-7_69' apa: 'Biermann, T., Schwabe, A., & Karl, H. (2009). Creating Butterflies in the Core – A Network Coding Extension for MPLS/RSVP-TE. In NETWORKING 2009 (pp. 883–894). Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-01399-7_69' bibtex: '@inbook{Biermann_Schwabe_Karl_2009, place={Berlin, Heidelberg}, title={Creating Butterflies in the Core – A Network Coding Extension for MPLS/RSVP-TE}, DOI={10.1007/978-3-642-01399-7_69}, booktitle={NETWORKING 2009}, publisher={Springer Berlin Heidelberg}, author={Biermann, Thorsten and Schwabe, Arne and Karl, Holger}, year={2009}, pages={883–894} }' chicago: 'Biermann, Thorsten, Arne Schwabe, and Holger Karl. “Creating Butterflies in the Core – A Network Coding Extension for MPLS/RSVP-TE.” In NETWORKING 2009, 883–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. https://doi.org/10.1007/978-3-642-01399-7_69.' ieee: 'T. Biermann, A. Schwabe, and H. Karl, “Creating Butterflies in the Core – A Network Coding Extension for MPLS/RSVP-TE,” in NETWORKING 2009, Berlin, Heidelberg: Springer Berlin Heidelberg, 2009, pp. 883–894.' mla: Biermann, Thorsten, et al. “Creating Butterflies in the Core – A Network Coding Extension for MPLS/RSVP-TE.” NETWORKING 2009, Springer Berlin Heidelberg, 2009, pp. 883–94, doi:10.1007/978-3-642-01399-7_69. short: 'T. Biermann, A. Schwabe, H. Karl, in: NETWORKING 2009, Springer Berlin Heidelberg, Berlin, Heidelberg, 2009, pp. 883–894.' date_created: 2018-03-27T12:31:37Z date_updated: 2022-01-06T06:53:28Z department: - _id: '75' doi: 10.1007/978-3-642-01399-7_69 page: 883-894 place: Berlin, Heidelberg publication: NETWORKING 2009 publication_identifier: isbn: - '9783642013980' - '9783642013997' issn: - 0302-9743 - 1611-3349 publication_status: published publisher: Springer Berlin Heidelberg status: public title: Creating Butterflies in the Core – A Network Coding Extension for MPLS/RSVP-TE type: book_chapter user_id: '15572' year: '2009' ... --- _id: '2513' author: - first_name: Thorsten full_name: Biermann, Thorsten last_name: Biermann - first_name: Christian full_name: Dannewitz, Christian last_name: Dannewitz - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Biermann T, Dannewitz C, Karl H. Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks.; 2008. apa: Biermann, T., Dannewitz, C., & Karl, H. (2008). Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks. bibtex: '@book{Biermann_Dannewitz_Karl_2008, title={Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks}, author={Biermann, Thorsten and Dannewitz, Christian and Karl, Holger}, year={2008} }' chicago: Biermann, Thorsten, Christian Dannewitz, and Holger Karl. Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks, 2008. ieee: T. Biermann, C. Dannewitz, and H. Karl, Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks. 2008. mla: Biermann, Thorsten, et al. Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks. 2008. short: T. Biermann, C. Dannewitz, H. Karl, Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks, 2008. date_created: 2018-04-26T10:46:08Z date_updated: 2022-01-06T06:56:53Z ddc: - '000' department: - _id: '75' file: - access_level: closed content_type: application/pdf creator: tabu date_created: 2018-04-26T10:45:25Z date_updated: 2018-04-26T10:45:25Z file_id: '2514' file_name: Optimizing.pdf file_size: 230623 relation: main_file success: 1 file_date_updated: 2018-04-26T10:45:25Z has_accepted_license: '1' status: public title: Extended Results on an Adaptive Resource/Performance Trade-Off for Resolving Complex Queries in P2P Networks type: report user_id: '15572' year: '2008' ... --- _id: '1841' author: - first_name: Dereje H. full_name: Woldegebreal, Dereje H. last_name: Woldegebreal - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Woldegebreal DH, Karl H. Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension. In: Lecture Notes in Computer Science. Berlin, Heidelberg: Springer Berlin Heidelberg; 2008:141-155. doi:10.1007/978-3-540-77690-1_9' apa: 'Woldegebreal, D. H., & Karl, H. (2008). Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension. In Lecture Notes in Computer Science (pp. 141–155). Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-77690-1_9' bibtex: '@inbook{Woldegebreal_Karl_2008, place={Berlin, Heidelberg}, title={Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension}, DOI={10.1007/978-3-540-77690-1_9}, booktitle={Lecture Notes in Computer Science}, publisher={Springer Berlin Heidelberg}, author={Woldegebreal, Dereje H. and Karl, Holger}, year={2008}, pages={141–155} }' chicago: 'Woldegebreal, Dereje H., and Holger Karl. “Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension.” In Lecture Notes in Computer Science, 141–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. https://doi.org/10.1007/978-3-540-77690-1_9.' ieee: 'D. H. Woldegebreal and H. Karl, “Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension,” in Lecture Notes in Computer Science, Berlin, Heidelberg: Springer Berlin Heidelberg, 2008, pp. 141–155.' mla: 'Woldegebreal, Dereje H., and Holger Karl. “Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension.” Lecture Notes in Computer Science, Springer Berlin Heidelberg, 2008, pp. 141–55, doi:10.1007/978-3-540-77690-1_9.' short: 'D.H. Woldegebreal, H. Karl, in: Lecture Notes in Computer Science, Springer Berlin Heidelberg, Berlin, Heidelberg, 2008, pp. 141–155.' date_created: 2018-03-27T13:03:56Z date_updated: 2022-01-06T06:53:32Z department: - _id: '75' doi: 10.1007/978-3-540-77690-1_9 page: 141-155 place: Berlin, Heidelberg publication: Lecture Notes in Computer Science publication_identifier: isbn: - '9783540776895' - '9783540776901' publication_status: published publisher: Springer Berlin Heidelberg status: public title: 'Network-Coding-Based Cooperative Transmission in Wireless Sensor Networks: Diversity-Multiplexing Tradeoff and Coverage Area Extension' type: book_chapter user_id: '15572' year: '2008' ... --- _id: '2515' author: - first_name: Falk full_name: Eitzen, Falk last_name: Eitzen - first_name: Stefan full_name: Valentin, Stefan last_name: Valentin - first_name: Kai full_name: Gossens, Kai last_name: Gossens - first_name: Holger full_name: Karl, Holger last_name: Karl - first_name: Oliver full_name: Rolfes, Oliver last_name: Rolfes citation: ama: Eitzen F, Valentin S, Gossens K, Karl H, Rolfes O. Experimental Evaluation of IEEE 802.11a-Based WLANs for Medium Range Communication.; 2007. apa: Eitzen, F., Valentin, S., Gossens, K., Karl, H., & Rolfes, O. (2007). Experimental evaluation of IEEE 802.11a-based WLANs for medium range communication. bibtex: '@book{Eitzen_Valentin_Gossens_Karl_Rolfes_2007, title={Experimental evaluation of IEEE 802.11a-based WLANs for medium range communication}, author={Eitzen, Falk and Valentin, Stefan and Gossens, Kai and Karl, Holger and Rolfes, Oliver}, year={2007} }' chicago: Eitzen, Falk, Stefan Valentin, Kai Gossens, Holger Karl, and Oliver Rolfes. Experimental Evaluation of IEEE 802.11a-Based WLANs for Medium Range Communication, 2007. ieee: F. Eitzen, S. Valentin, K. Gossens, H. Karl, and O. Rolfes, Experimental evaluation of IEEE 802.11a-based WLANs for medium range communication. 2007. mla: Eitzen, Falk, et al. Experimental Evaluation of IEEE 802.11a-Based WLANs for Medium Range Communication. 2007. short: F. Eitzen, S. Valentin, K. Gossens, H. Karl, O. Rolfes, Experimental Evaluation of IEEE 802.11a-Based WLANs for Medium Range Communication, 2007. date_created: 2018-04-26T10:48:30Z date_updated: 2022-01-06T06:56:53Z ddc: - '000' department: - _id: '75' file: - access_level: closed content_type: application/pdf creator: tabu date_created: 2018-04-26T10:48:18Z date_updated: 2018-04-26T10:48:18Z file_id: '2516' file_name: tr-ri-07-281-wlan_wman_measurements.pdf file_size: 316998 relation: main_file success: 1 file_date_updated: 2018-04-26T10:48:18Z has_accepted_license: '1' status: public title: Experimental evaluation of IEEE 802.11a-based WLANs for medium range communication type: report user_id: '15572' year: '2007' ... --- _id: '2518' author: - first_name: Stefan full_name: Valentin, Stefan last_name: Valentin - first_name: Holger full_name: von Malm, Holger last_name: von Malm - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Valentin S, von Malm H, Karl H. Evaluating the GNU Software Radio Platform for Wireless Testbeds.; 2006. apa: Valentin, S., von Malm, H., & Karl, H. (2006). Evaluating the GNU Software Radio platform for wireless testbeds. bibtex: '@book{Valentin_von Malm_Karl_2006, title={Evaluating the GNU Software Radio platform for wireless testbeds}, author={Valentin, Stefan and von Malm, Holger and Karl, Holger}, year={2006} }' chicago: Valentin, Stefan, Holger von Malm, and Holger Karl. Evaluating the GNU Software Radio Platform for Wireless Testbeds, 2006. ieee: S. Valentin, H. von Malm, and H. Karl, Evaluating the GNU Software Radio platform for wireless testbeds. 2006. mla: Valentin, Stefan, et al. Evaluating the GNU Software Radio Platform for Wireless Testbeds. 2006. short: S. Valentin, H. von Malm, H. Karl, Evaluating the GNU Software Radio Platform for Wireless Testbeds, 2006. date_created: 2018-04-26T10:51:00Z date_updated: 2022-01-06T06:56:54Z ddc: - '000' department: - _id: '75' file: - access_level: closed content_type: application/pdf creator: tabu date_created: 2018-04-26T10:50:50Z date_updated: 2018-04-26T10:50:50Z file_id: '2520' file_name: TR-RI-06-273-gnuradio_testbed.pdf file_size: 287318 relation: main_file success: 1 file_date_updated: 2018-04-26T10:50:50Z has_accepted_license: '1' status: public title: Evaluating the GNU Software Radio platform for wireless testbeds type: report user_id: '15572' year: '2006' ... --- _id: '841' author: - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Andreas full_name: Willig, Andreas last_name: Willig citation: ama: Karl H, Willig A. Protocols and Architectures for Wireless Sensor Networks.; 2005. apa: Karl, H., & Willig, A. (2005). Protocols and architectures for wireless sensor networks. bibtex: '@book{Karl_Willig_2005, title={Protocols and architectures for wireless sensor networks}, author={Karl, Holger and Willig, Andreas}, year={2005} }' chicago: Karl, Holger, and Andreas Willig. Protocols and Architectures for Wireless Sensor Networks, 2005. ieee: H. Karl and A. Willig, Protocols and architectures for wireless sensor networks. 2005. mla: Karl, Holger, and Andreas Willig. Protocols and Architectures for Wireless Sensor Networks. 2005. short: H. Karl, A. Willig, Protocols and Architectures for Wireless Sensor Networks, 2005. date_created: 2017-11-27T10:22:27Z date_updated: 2022-01-06T07:03:54Z department: - _id: '75' publication_identifier: isbn: - 978-0-470-09510-2 status: public title: Protocols and architectures for wireless sensor networks type: book user_id: '15572' year: '2005' ... --- _id: '848' author: - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Karl H. Ad Hoc Networks. In: The Industrial Information Technology Handbook. ; 2005:1--16.' apa: Karl, H. (2005). Ad Hoc Networks. In The Industrial Information Technology Handbook (pp. 1--16). bibtex: '@inbook{Karl_2005, title={Ad Hoc Networks}, booktitle={The Industrial Information Technology Handbook}, author={Karl, Holger}, year={2005}, pages={1--16} }' chicago: Karl, Holger. “Ad Hoc Networks.” In The Industrial Information Technology Handbook, 1--16, 2005. ieee: H. Karl, “Ad Hoc Networks,” in The Industrial Information Technology Handbook, 2005, pp. 1--16. mla: Karl, Holger. “Ad Hoc Networks.” The Industrial Information Technology Handbook, 2005, pp. 1--16. short: 'H. Karl, in: The Industrial Information Technology Handbook, 2005, pp. 1--16.' date_created: 2017-11-27T10:22:27Z date_updated: 2022-01-06T07:03:55Z department: - _id: '75' page: 1--16 publication: The Industrial Information Technology Handbook status: public title: Ad Hoc Networks type: book_chapter user_id: '15572' year: '2005' ... --- _id: '858' author: - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Karl H. Data Transmission in Mobile Communication Systems. In: Location-Based Services. ; 2004:207--244.' apa: Karl, H. (2004). Data Transmission in Mobile Communication Systems. In Location-Based Services (pp. 207--244). bibtex: '@inbook{Karl_2004, title={Data Transmission in Mobile Communication Systems}, booktitle={Location-Based Services}, author={Karl, Holger}, year={2004}, pages={207--244} }' chicago: Karl, Holger. “Data Transmission in Mobile Communication Systems.” In Location-Based Services, 207--244, 2004. ieee: H. Karl, “Data Transmission in Mobile Communication Systems,” in Location-Based Services, 2004, pp. 207--244. mla: Karl, Holger. “Data Transmission in Mobile Communication Systems.” Location-Based Services, 2004, pp. 207--244. short: 'H. Karl, in: Location-Based Services, 2004, pp. 207--244.' date_created: 2017-11-27T10:22:27Z date_updated: 2022-01-06T07:03:57Z department: - _id: '75' page: 207--244 publication: Location-Based Services status: public title: Data Transmission in Mobile Communication Systems type: book_chapter user_id: '15572' year: '2004' ... --- _id: '2533' author: - first_name: Vlado full_name: ' Handziski, Vlado' last_name: ' Handziski' - first_name: Andreas full_name: Köpke, Andreas last_name: Köpke - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Adam full_name: Wolisz, Adam last_name: Wolisz citation: ama: Handziski V, Köpke A, Karl H, Wolisz A. A Common Wireless Sensor Network Architecture? Berlin; 2003. apa: Handziski, V., Köpke, A., Karl, H., & Wolisz, A. (2003). A common wireless sensor network architecture? Berlin. bibtex: '@book{ Handziski_Köpke_Karl_Wolisz_2003, place={Berlin}, title={A common wireless sensor network architecture?}, author={ Handziski, Vlado and Köpke, Andreas and Karl, Holger and Wolisz, Adam}, year={2003} }' chicago: Handziski, Vlado, Andreas Köpke, Holger Karl, and Adam Wolisz. A Common Wireless Sensor Network Architecture? Berlin, 2003. ieee: V. Handziski, A. Köpke, H. Karl, and A. Wolisz, A common wireless sensor network architecture? Berlin, 2003. mla: Handziski, Vlado, et al. A Common Wireless Sensor Network Architecture? 2003. short: V. Handziski, A. Köpke, H. Karl, A. Wolisz, A Common Wireless Sensor Network Architecture?, Berlin, 2003. date_created: 2018-04-26T11:19:04Z date_updated: 2022-01-06T06:57:01Z ddc: - '000' department: - _id: '75' file: - access_level: closed content_type: application/pdf creator: tabu date_created: 2018-04-26T11:18:38Z date_updated: 2018-04-26T11:18:38Z file_id: '2534' file_name: sensornetz_architecture.pdf file_size: 137677 relation: main_file success: 1 file_date_updated: 2018-04-26T11:18:38Z has_accepted_license: '1' place: Berlin status: public title: A common wireless sensor network architecture? type: report user_id: '15572' year: '2003' ... --- _id: '2538' author: - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Seble full_name: Mengesha, Seble last_name: Mengesha - first_name: Daniel full_name: Hollos, Daniel last_name: Hollos citation: ama: 'Karl H, Mengesha S, Hollos D. Relaying in Wireless Access Networks . London: Business Briefing: Wireless Technology 2002; 2002.' apa: 'Karl, H., Mengesha, S., & Hollos, D. (2002). Relaying in Wireless Access Networks . London: Business Briefing: Wireless Technology 2002.' bibtex: '@book{Karl_Mengesha_Hollos_2002, place={London}, title={Relaying in Wireless Access Networks }, publisher={Business Briefing: Wireless Technology 2002}, author={Karl, Holger and Mengesha, Seble and Hollos, Daniel}, year={2002} }' chicago: 'Karl, Holger, Seble Mengesha, and Daniel Hollos. Relaying in Wireless Access Networks . London: Business Briefing: Wireless Technology 2002, 2002.' ieee: 'H. Karl, S. Mengesha, and D. Hollos, Relaying in Wireless Access Networks . London: Business Briefing: Wireless Technology 2002, 2002.' mla: 'Karl, Holger, et al. Relaying in Wireless Access Networks . Business Briefing: Wireless Technology 2002, 2002.' short: 'H. Karl, S. Mengesha, D. Hollos, Relaying in Wireless Access Networks , Business Briefing: Wireless Technology 2002, London, 2002.' date_created: 2018-04-26T11:25:49Z date_updated: 2022-01-06T06:57:02Z ddc: - '000' department: - _id: '75' file: - access_level: closed content_type: application/pdf creator: tabu date_created: 2018-04-26T11:25:41Z date_updated: 2018-04-26T11:25:41Z file_id: '2539' file_name: karlBusinessBriefingRelayAdHoc.pdf file_size: 226530 relation: main_file success: 1 file_date_updated: 2018-04-26T11:25:41Z has_accepted_license: '1' place: London publisher: 'Business Briefing: Wireless Technology 2002' status: public title: 'Relaying in Wireless Access Networks ' type: report user_id: '15572' year: '2002' ...