CAI2M2: a centralized autonomous inclusive intersection management mechanism for heterogeneous connected vehicles. - In: IEEE open journal of vehicular technology, ISSN 2644-1330, Bd. 5 (2024), S. 230-243
https://doi.org/10.1109/OJVT.2024.3354393
Kommunikationsnetze und -technik an der Technischen Universität Ilmenau. - In: 17. Ilmenauer TK-Manager Workshop, (2023), S. 15-16
https://www.db-thueringen.de/receive/dbt_mods_00057781
17. Ilmenauer TK-Manager Workshop : Technische Universität Ilmenau, 29. September 2023 : Tagungsband. - Ilmenau : ilmedia, 2023. - 1 Online-Ressource (17 Seiten)
https://doi.org/10.22032/dbt.57781
PCIMS: plenary centralized intersection management scheme for heterogeneous connected vehicles. - In: 2023 IEEE International Conference on Omni-Layer Intelligent Systems (COINS), (2023), insges. 6 S.
This paper proposes a novel plenary centralized intersection management scheme (PCIMS) for a non-signalized intersection. Our contributions are fourfold. First, we take into account vehicle heterogeneity by integrating various vehicle classes in the system. Second, we consider some key elements in the scheduling mechanism such as vehicle types, intersection rules and road priorities. Third, we discuss the significant role of different road conditions, specific vehicles behavior and safety parameters in the traffic safety. Forth, in addition to the traffic safety assurance, we demonstrate the superiority of the system performance over conventional traffic lights (TLs) in several scenarios with congested and sparse traffic in terms of average travel time (ATT), packet loss rate (PLR), channel busy rate (CBR), intersection busy time (IBT), and throughput.
https://doi.org/10.1109/COINS57856.2023.10189259
Plenary autonomous intersection management protocol for heterogeneous connected vehicles. - In: ICUFN 2023, (2023), S. 334-336
This paper proposes a centralized autonomous intersection management scheme for heterogeneous connected vehicles (HCVs). Contributions of this work are as follows. First, we sustainably classify heterogeneous vehicles with their distinctive safety-related characteristics. Second, we conduct a safe and efficient coordination algorithm with respect to some criteria such as vehicle types, road priorities and right of way rules. Third, we consider the impact of different road conditions, vehicle characteristics, load, and braking technology on the system performance. Forth, we demonstrate the efficiency of the system under various traffic densities with symmetric and asymmetric vehicle distribution. Besides, system performance is to be compared with traffic lights (TLs) scenarios in terms of throughput, average travel time (ATT), intersection busy time (IBT), channel busy rate (CBR), and packet loss rate (PLR) in various road conditions.
https://doi.org/10.1109/ICUFN57995.2023.10200347
Intelligent Energy-aware Routing Protocol in Mobile IoT Networks based on SDN. - In: IEEE transactions on green communications and networking, ISSN 2473-2400, Bd. 7 (2023), 4, S. 2093-2103
Intelligent devices and equipment have affected almost all aspects of our life and behavior. The type of connection and the manner of communication between this large volume of devices has caused the emergence of a vast field in the Internet called the Internet of Things, which significantly highlights the issue of energy management and increases the lifetime of networks. Complex communications, especially in mobile networks, have generated many challenges for network designers. To solve these challenges, the Software Defined Networking (SDN) paradigm has reduced the overhead in the devices caused by processing and computing by adding new capabilities to mobile IoT networks. This technique transfers energy-consuming tasks to the central controller, which manages continuous topological changes of the network in dynamic environments. This paper presents a new routing approach called Intelligent Energy-aware Routing Protocol in Mobile IoT Networks based on SDN (IERMIoT), which tries to manage the dynamic changes of topology due to the movement of mobile nodes to increase the network’s lifetime and prevent energy dissipation. For this purpose, it defines clusters of nodes and uses an intelligent evolutionary algorithm to determine the number of clusters required in the network and their balanced distribution in the dynamic environment. Also, this approach considers a mechanism to reduce the overhead of control packets and routing packets, which significantly affects the energy consumption of nodes. The simulation results indicate the proposed solution’s effectiveness compared to other simulated approaches with respect to packet delivery rate, average energy consumption, network lifetime, number of alive nodes, coverage, and routing overhead.
https://doi.org/10.1109/TGCN.2023.3296272
VANET-based traffic light management for an emergency vehicle. - In: Ubiquitous networking, (2023), S. 129-137
Wireless communications have affected our lifestyle in the last decades. It is helpful to improve quality of life for communities. Communications among vehicles usually take place in vehicular ad-hoc networks (VANETs). Vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications are aspects of communications in the transportation which are growing rapidly. They can play a pivotal role in the transportation field. Management of traffic lights (TLs) is crucial to control traffic flow especially at an intersection. The goal of this paper is to manage the TLs at an intersection when an emergency vehicle (EV) is approaching. First, we simulate an intersection which includes TLs via simulation of urban mobility (SUMO). Later, we simulate VANETs communication to manage the TLs at the intersection when the EV is coming with the help of objective modular network testbed in C++ (OMNeT++) and vehicles in network simulation (Veins). Finally, the impact of V2I communication on delivery efficiency of the emergency service is investigated. Simulation results show an improvement in delivery efficiency of the emergency service.
Machine learning routing protocol in mobile IoT based on software-defined networking. - In: 2022 IEEE Conference on Network Function Virtualization and Software Defined Networks, (2022), S. 108-111
The Internet's pervasive influence in all aspects of life has caused the number of heterogeneous devices connected to this network to grow exponentially. As a result, recognizing these devices and their management has led to the emergence of a new paradigm called the “Internet of Things” (IoT). Sensor networks are the essential pillar of the Internet of Things. Due to their low cost and ease of deployment, they can be implemented in a structured or unstructured way in a dynamic physical environment to manage and monitor the dynamic conditions of the desired area in various applications. Nevertheless, what is noteworthy in this regard is the limited resources of sensor networks, which cannot meet the diverse needs of the Internet of Things, so appropriate solutions must be adopted to some challenges, such as scalability and routing in dynamic topologies. Against this challenge, the SDN paradigm has attracted massive attention because it is possible to add new capabilities to networks with limited resources to reduce the overhead caused by processing and computing in sensor nodes and delegate these energy-consuming tasks to the controller. On the other hand, machine learning techniques have also shown their ability to optimize routing and increase the quality of service, reliability, and security by using statistics and information obtained from these networks. However, less research has addressed sensor nodes' mobility and challenges in resource-constrained IoT networks.
https://doi.org/10.1109/NFV-SDN56302.2022.9974791
Versatile safe autonomous intersection management protocol for heterogeneous connected vehicles. - In: 2022 IEEE Vehicle Power and Propulsion Conference (VPPC), (2022), insges. 7 S.
In this paper, we employ a novel safe centralized intersection management (IM) scheme for heterogeneous classes of connected vehicles such as passenger vehicles (PVs), buses, vans, trucks, emergency vehicles (EVs), trams and also vulnerable road users (VRUs) including motorcycles, bicycles, and moped. A rule-based algorithm undertakes safe coordination using different criteria such as intersection traffic rules, vehicle types and road priorities. Besides, in the proposed system, dynamics and behavior of the road users, which might be totally distinct, are taken into account. These underlying characteristic behaviors comprise of reaction distance $(D_r)$, stopping distance $(D_s)$, braking distance $(D_b)$, braking lag distance $(D_bl)$ as well as deceleration (d) and velocity (v) of the vehicles in an urban environment. In addition, special lanes for cyclists and tram tracks are considered in the layout. Furthermore, in order to more properly image the realistic traffic situations, we have integrated the impact of various road conditions in our system in terms of dry, wet, snowy, and icy. Performance of the system is analyzed in several sparse and dense traffic situations with respect to different criteria such as speed and travel time. Additionally, efficiency is also compared to traditional intersection management systems like traffic lights (TLs).
https://doi.org/10.1109/VPPC55846.2022.10003461
One-dimensional convolutional neural network for detection and mitigation of DDoS attacks in SDN. - In: Machine learning for networking, (2022), S. 11-28
In Software-Defined Networking (SDN), the controller plane is an essential component in managing network traffic because of its global knowledge of the network and its management applications. However, an attacker might attempt to direct malicious traffic towards the controller, paralyzing the entire network. In this work, a One-Dimensional Convolutional Neural Network (1D-CNN) is used to protect the controller evaluating entropy information. Therefore, the CICDDoS2019 dataset is used to investigate the proposed approach to train and evaluate the performance of the model and then examine the effectiveness of the proposal in the SDN environment. The experimental results manifest that the proposed approach achieves very high enhancements in terms of accuracy, precision, recall, F1 score, and Receiver Operating Characteristic (ROC) for the detection of Distributed Denial of Service (DDoS) attacks compared to one of the benchmarking state of the art approaches.
Empirical estimation of ETSI ITS-G5 performance over an IPv6-based platform. - In: 2022 IEEE International Performance, Computing, and Communications Conference (IPCCC), (2022), S. 185-193
Intelligent transport systems (ITS) promise to leverage wireless communications among vehicles. Performance of wireless communication is of crucial importance and can severely impact safety, efficiency and infotainment of transport applications. In this paper, in order to promote the usage of IPv6 in vehicular networks, we deploy a wireless communication framework in a Linux environment based on the Internet protocol (IP). Further, we evaluate the behaviour of the ITS-G5 in various stationary and mobile scenarios to investigate the impact of environmental and radio factors on the performance of ITS-G5. Several measurements such as inter-reception time (IRT), packet loss, latency, end-to-end (E2E) latency, reception position error (RPE), and throughput are carried out to discover the limitations and strength of the technology in a real world test-bed.
https://doi.org/10.1109/IPCCC55026.2022.9894344
Recent review of distributed denial of service attacks in the Internet of Things. - In: 5th Conference on Cloud and Internet of Things, (2022), S. 32-39
The use of the Internet of Things (IoT) in almost all domains nowadays makes it the network of the future. Due to the high attention since its creation, this network is the target of numerous attacks of different purpose and nature, of which one of the most perpetrated and virulent is the distributed denial of services (DDoS) attack. This article reviews the different security requirements and some of the attacks within IoT networks. It then focuses on DDoS attacks on the IoT and summarizes some methods of countermeasures for this attack, from the oldest to the most recent ones. Based on this study, it seems that the benefits of machine learning (ML) and deep learning (DL) combined with other technologies such as software defined networking (SDN) are very promising approaches against DDoS attacks.
https://doi.org/10.1109/CIoT53061.2022.9766655
Distributed vehicular communication protocols for autonomous intersection management. - In: The 13th International Conference on Ambient Systems, Networks and Technologies (ANT) / The 5th International Conference on Emerging Data and Industry 4.0 (EDI40), (2022), S. 150-157
Intersections are considered to be a vital part of urban transportation and drivers are prone to make more mistakes, when driving through the intersections. A high percentage of the total fatal car accidents leading to injuries are reported within intersections annually. On the other side, there usually is traffic congestion at intersections during busy times of day. Stopping the vehicles in one direction to let the vehicle pass in the other directions leads to this phenomenon and it has a huge effect on traffic delay, which causes great squander in natural and human resources as well as leading to weather pollution in metropolises. The goal of this paper is to design and simulate different spatio-temporal-based algorithms for autonomous connected vehicles to be able to cross the intersection safely and efficiently. Vehicles employ vehicle-to-vehicle (V2V) communication via dedicated short range communications (DSRC) [4, 1] to exchange their kinematic information with each other. The proposed algorithms are compared to each other as well as with traditional methods like traffic lights in terms of various performance metrics such as traffic congestion, speed and especially delay to find the optimal control approach for autonomous intersection management.
https://doi.org/10.1016/j.procs.2022.03.022
EEC-GA: energy-efficient clustering approach using genetic algorithm for heterogeneous wireless sensor networks. - In: The 36th International Conference on Information Networking (ICOIN 2022), (2022), S. 280-286
In a wireless sensor network (WSN), sensor nodes are distributed in a predefined environment, collecting environmental data and transferring them to the base station or sink for processing and analysis. In the meantime, much research has been done on heterogeneous wireless sensor networks. Due to the fact that in a heterogeneous wireless sensor network (HWSN) factors such as primary energy, data processing ability, etc. greatly affect the life of the network, the selection of cluster heads (CHs) for coordinating a cluster of sensor nodes has created a wide range for further development of network efficiency capabilities. In this work, an event-driven energy-efficient protocol based on a genetic algorithm is proposed that uses various parameters such as the remaining energy of the node, the minimum distance of a node to the base station, and also the degree of the neighborhood of a node as fitness function values, and evaluates solutions in a heterogeneous wireless sensor network. For evaluating the proposal, network stability, energy consumption, death of the first node, and number of living nodes per round are considered as evaluation criteria.
https://doi.org/10.1109/ICOIN53446.2022.9687275
A comprehensive survey on cooperative intersection management for heterogeneous connected vehicles. - In: IEEE access, ISSN 2169-3536, Bd. 10 (2022), S. 7937-7972
https://doi.org/10.1109/ACCESS.2022.3142450
Towards applying IPSec between edge switches and end users to counter DDoS attacks in SDNs. - In: 2021 IEEE 23rd International Conference on High Performance Computing Communications/7th International Conference on Data Science Systems/19th International Conference on Smart City/7th International Conference on Dependability in Sensor, Cloud Big Data Systems Applications, (2021), S. 1545-1551
Software-Defined Networking (SDN) is a new networking paradigm with many advantages compared to traditional networks, such as reliability, scalability, and flexibility. However, SDN inherits some vulnerabilities from traditional networks and even shows new properties that malicious users might exploit as vulnerable aspects. In this paper, a novel solution is introduced based on the notion of the IP Security protocol (IPSec) and an adaptive threshold algorithm to counter Distributed Denial of Service (DDoS) attacks and freeloading attacks. The simulation results show the ability of the proposed countermeasure to prevent these attacks by distinguishing between benign and malicious users, which shows a notable enhancement compared to previous approaches.
https://doi.org/10.1109/HPCC-DSS-SmartCity-DependSys53884.2021.00229
Safety-centric vehicle classification using vehicular networks. - In: The 18th International Conference on Mobile Systems and Pervasive Computing (MobiSPC), the 16th International Conference on Future Networks and Communications (FNC), the 11th International Conference on Sustainable Energy Information Technology, (2021), S. 238-245
This paper investigates the vehicle classification (VC) based on vehicular ad-hoc networks (VANETs). Using VANETs, one can extract the physical and mobility characteristics of the vehicles globally and in a real-time manner. In this paper, we propose an in-depth novel safety-driven VC method for heterogeneous connected vehicles. In this innovative approach, road vehicles are classified into a broad range of classes according to their distinctive behaviors and safety measures. The proposed method can play a vital role in reducing collisions and can be used as a safety standard reference in VANETs-based VC systems. Furthermore, advance driver assistance systems (ADAS) can integrate this method and extend road safety by notifying vehicles of dangerous situations on the road using V2X communication.
https://doi.org/10.1016/j.procs.2021.07.030
Deep learning algorithms for detecting denial of service attacks in Software-Defined Networks. - In: The 18th International Conference on Mobile Systems and Pervasive Computing (MobiSPC), the 16th International Conference on Future Networks and Communications (FNC), the 11th International Conference on Sustainable Energy Information Technology, (2021), S. 254-263
In Software-Defined Networking (SDN) the controller is the only entity that has the complete view on the network, and it acts as the brain, which is responsible for traffic management based on its global knowledge of the network. Therefore, an attacker attempts to direct malicious traffic towards the controller, which could lead to paralyze the entire network. In this work, Deep Learning algorithms are used to protect the controller by applying high-security measures, which is essential for the continuous availability and connectivity in the network. Recurrent Neural Network (RNN), Long Short-Term Memory (LSTM) and Gated Recurrent Unit (GRU) are proposed to recognize and prevent the intrusion attacks. We evaluate our models using a recently released dataset (InSDN dataset). Finally, our experiments manifest that our models achieve very high accuracy for the detection of Denial of Service (DoS) attacks. Thus, a significant improvement in attack detection can be shown compared to one of the benchmarking state of the art approaches.
https://doi.org/10.1016/j.procs.2021.07.032
16. Ilmenauer TK-Manager Workshop : Technische Universität Ilmenau, 16. September 2021 : Tagungsband. - Ilmenau : ilmedia, 2021. - 1 Online-Ressource (25 Seiten)
https://doi.org/10.22032/dbt.50118
Performance evaluation of Advanced Message Queuing Protocol (AMQP): an empirical analysis of AMQP online message brokers. - In: The 2021 International Symposium on Networks, Computers and Communications (ISNCC 2021), (2021), insges. 8 S.
This paper analytically evaluates the Advanced Message Queuing Protocol (AMQP) based on two different message brokers called RabbitMQ and ActiveMQ which implement two different versions of AMQP, namely version 0-9-1 and version 1-0 respectively. A system model is created for the consumer and subscriber to find the difference between the two brokers in a live environment which are hosted on Amazon Web Service (AWS). Different parameters like latency, publish-rate, data-rate, and consume-rate are considered for performance evaluation for varying message payloads and queues.
https://doi.org/10.1109/ISNCC52172.2021.9615705
MC-COCO4V2P: multi-channel clustering-based congestion control for Vehicle-to-Pedestrian communication. - In: IEEE Transactions on Intelligent Vehicles, ISSN 2379-8858, Bd. 6 (2021), 3, S. 523-532
Vehicle-to-Pedestrian communication can extend crash prevention capabilities of the current driver assistance systems in vehicles. This requires vehicles and pedestrians to exchange safety messages with each other. However, as the number of pedestrians increases, the numerous safety messages transmitted by pedestrians can quickly congest the network. This can severely affect Vehicle-to-Pedestrian and Vehicle-to-Vehicle communication. Hence, a mechanism for the mitigation of network congestion caused by pedestrian safety messages is required. This article proposes a Multi-channel Clustering-based Congestion Control (MC-COCO4V2P) algorithm, a proactive and infrastructure-independent clustering-based approach to mitigate the network congestion caused by pedestrians. Our approach clusters pedestrians based on their location and direction and uses separate channels for exchanging cluster and safety messages, thereby reducing the control information overhead. It also employs a transmit power control mechanism to make the clustering mechanism energy efficient. Our results show that the clustering of pedestrians can significantly improve network performance and reduce the power consumption of pedestrians devices.
https://doi.org/10.1109/TIV.2020.3046694
Modeling and evaluation of the impact of motorcycles mobility on vehicular traffic. - In: Journal of Transportation Technologies, ISSN 2160-0481, Bd. 11 (2021), 3, S. 426-435
Traffic simulation can help to evaluate the impact of different mobility behaviors on the traffic flow from safety, efficiency, and environmental views. The objective of this paper is to extend the SUMO (Simulation of Urban Mobility) road traffic simulator to model and evaluate the impact of motorcycles mobility on vehicular traffic. First, we go through diverse mobility aspects and models for motorcycles in SUMO. Later, we opt for the most suitable mobility models of motorcycles. Finally, the impact of motorcycle mobility on different kinds of vehicles is investigated in terms of environment, fuel consumption, velocity and travel time. The result of modeling and evaluation shows that based on the mobility model of the motorcycle, vehicular traffic flow can be enhanced or deteriorated.
https://doi.org/10.4236/jtts.2021.113028
Vehicle classification in intelligent transport systems: an overview, methods and software perspective. - In: IEEE open journal of intelligent transportation systems, ISSN 2687-7813, Bd. 2 (2021), S. 173-194
https://doi.org/10.1109/OJITS.2021.3096756
On-demand quality-of-service for crucial vehicle-to-pedestrian communication. - In: WiMob 2020, (2020), S. 56-61
https://doi.org/10.1109/WiMob50308.2020.9253416
External device to protect the software-defined network performance in case of a malicious attack. - In: ICFNDS '19, (2019), article no. 25, 6 Seiten
Many security analyses argue that the Software-Defined Network (SDNs) framework has many vulnerabilities because SDN provides malicious users an easy opportunity to overload network resources. Typically, the malicious user directs the attack towards the network layer, especially the controller plane which acts as the core of the network. However, the attack is redirected to the application layer when the attacker is defeated in the network layer. This paper proposes to extend the SDN controller with an external device to improve the SDN architecture and to protect the service level of the SDN components against malicious attacks. Simulation results show that the proposal successfully protects Web servers against Slow HTTP DDoS attacks.
https://doi.org/10.1145/3341325.3342016
Using INSPECTOR device to stop packet injection attack in SDN. - In: IEEE communications letters, ISSN 1089-7798, Bd. 23 (2019), 7, S. 1174-1177
https://doi.org/10.1109/LCOMM.2019.2896928
15. Ilmenauer TK-Manager Workshop : Technische Universität Ilmenau, 17. Mai 2019 : Tagungsband. - Ilmenau : ilmedia, 2019. - 1 Online-Ressource (64 Seiten)
https://doi.org/10.22032/dbt.38489
Vehicle-to-Pedestrian communication for vulnerable road users: survey, design considerations, and challenges. - In: Sensors, ISSN 1424-8220, Bd. 19 (2019), 2, 358, insges. 18 S.
https://doi.org/10.3390/s19020358
Telefonieren im Internet - wie wird aus Paketen Sprache?. - In: Kinderuni Ilmenau 2018, (2018)
Hybrid scheme to enable DTN routing protocols to efficiently exploit stable MANET contacts. - In: EURASIP journal on wireless communications and networking, ISSN 1687-1499, (2018), 237, S. 1-13
https://doi.org/10.1186/s13638-018-1248-5
Enhanced failure recovery mechanism using OpenState Pipeline in SDN. - In: ICUFN 2018, ISBN 978-1-5386-4646-5, (2018), S. 104-109
https://doi.org/10.1109/ICUFN.2018.8437006
Towards 802.11p-based vehicle-to-pedestrian communication for crash prevention systems. - In: ICUMT 2017: faciliating the internet of skills, ISBN 978-1-5386-3435-6, (2017), S. 404-409
https://doi.org/10.1109/ICUMT.2017.8255154
Towards robust communications of wireless sensor networks in vehicular environments: a case study. - In: Journal of communications software and systems, ISSN 1846-6079, Bd. 13 (2017), 4, S. 157-164
Wireless Sensor Networks are popular solutions for various applications in order to reduce the efforts required by traditional cable-based systems. If the system in question is used to monitor and control physical processes, robust and reliable communication services have to be provided by the network. This is especially true for industrial or vehicular applications where the nodes are deployed in environments facing harsh propagation conditions. Usually, the effect of this on the system performance is studied on isolated layers of the OSI-reference model only. Therefore, we present results from a measurement campaign of vehicular environments that try to estimate the achievable robustness with respect to multiple OSI layers. Our results show that even if the link is rather poor, protocols on the upper layers are able to compensate this at the cost of additional delay.
http://dx.doi.org/10.24138/jcomss.v13i4.364
Poster: Utilization of additional nodes in hybrid DTN-MANET scenarios. - In: MobiCom'17, (2017), S. 35-37
Challenges for sensor network based outdoor positioning in forests - a case study. - In: 16. GI/ITG KuVS Fachgespräch Sensornetze der GI/ITG Fachgruppe Kommunikation und Verteilte Systeme, (2017), S. 51-54
http://edoc.sub.uni-hamburg.de/haw/volltexte/2017/4102/
Application-aware optimization approaches for multiple-criteria network selection in mobile heterogeneous networks. - In: 2017 2nd International Multidisciplinary Conference on Computer and Energy Science (SpliTech), ISBN 978-953-290-071-2, (2017), insges. 8 S.
http://ieeexplore.ieee.org/document/8019252/
Framework for a flexible comprehensive multiple-criteria network selection for mobile heterogeneous networks. - In: Journal of telecommunications system & management, ISSN 2167-0919, Bd. 6 (2017), 1, 153, insges. 11 S.
https://doi.org/10.4172/2167-0919.1000153
A framework to calculate delay-optimal oracle solutions based on DTN contact graphs. - In: European Wireless 2017, ISBN 978-3-8007-4426-8, (2017), S. 179-184
Simulating multi-criteria handover algorithms in OMNeT++. - In: 2017 International Siberian Conference on Control and Communications, SIBCON, ISBN 978-1-5090-1081-3, (2017), insges. 6 S.
https://doi.org/10.1109/SIBCON.2017.7998466
A mobile embedded-Linux-based testbed for outdoor ad hoc network evaluation. - In: WiSEE - 2016 IEEE International Conference on Wireless for Space and Extreme Environments, ISBN 978-1-5090-2609-8, (2016), S. 164-166
https://doi.org/10.1109/WiSEE.2016.7877325
Towards a universal approach for evaluation of handover algorithms. - In: 2016 International Conference on Engineering and Telecommunication - EnT 2016, ISBN 978-1-5090-4553-2, (2016), S. 15-20
https://doi.org/10.1109/EnT.2016.012
Evaluation of MCDM-based handover decision algorithms in OMNeT++. - In: 2016 IEEE 3rd International Symposium on Wireless Systems - IDAACS-SWS, ISBN 978-1-5090-4317-0, (2016), S. 11-14
https://doi.org/10.1109/IDAACS-SWS.2016.7805776
Hierarchical dynamic index NAT as a mobility solution. - In: 2016 IEEE 3rd International Symposium on Wireless Systems - IDAACS-SWS, ISBN 978-1-5090-4317-0, (2016), S. 112-115
https://doi.org/10.1109/IDAACS-SWS.2016.7805798
On the role of wireless sensor networks for intelligent transportation systems. - In: Proceedings of the International Academic Forum AMO - SPITSE - NESEFF, ISBN 978-5-91412-313-7, (2016), S. 38-39
14. Ilmenauer TK-Manager Workshop : Technische Universität Ilmenau, 16. September 2016 : Tagungsband. - Ilmenau : ilmedia, 2016. - 1 Online-Ressource (60 Seiten)Enthält 13 Beiträge
https://www.db-thueringen.de/receive/dbt_mods_00030157
QoS-aware routing for video streaming in multi-rate ad hoc networks. - In: 2016 9th IFIP Wireless and Mobile Networking Conference (WMNC), ISBN 978-1-4673-8746-0, (2016), S. 193-198
http://dx.doi.org/10.1109/WMNC.2016.7543989
Simulation of 3D signal propagation based on real world terrains for ad-hoc network evaluation. - In: 2016 9th IFIP Wireless and Mobile Networking Conference (WMNC), ISBN 978-1-4673-8746-0, (2016), S. 131-137
http://dx.doi.org/10.1109/WMNC.2016.7543980
A cross-layer mobility management with multi-criteria decision making. - In: ICUFN 2016, ISBN 978-1-4673-9991-3, (2016), S. 821-826
http://dx.doi.org/10.1109/ICUFN.2016.7537152
Evaluation of MCDA-based handover algorithms for mobile networks. - In: ICUFN 2016, ISBN 978-1-4673-9991-3, (2016), S. 810-815
http://dx.doi.org/10.1109/ICUFN.2016.7537150
Enhanced multi-criteria-based path selection algorithm for heterogeneous networks. - In: ICUFN 2016, ISBN 978-1-4673-9991-3, (2016), S. 804-809
http://dx.doi.org/10.1109/ICUFN.2016.7537149
Challenges of applying DTN routing protocols in realistic disaster scenarios. - In: ICUFN 2016, ISBN 978-1-4673-9991-3, (2016), S. 784-789
http://dx.doi.org/10.1109/ICUFN.2016.7537145
Evaluation of BLE Mesh capabilities: a case study based on CSRMesh. - In: ICUFN 2016, ISBN 978-1-4673-9991-3, (2016), S. 790-795
http://dx.doi.org/10.1109/ICUFN.2016.7537146
Kommunikationsnetze : eine umfassende Einführung : Anwendungen - Dienste - Protokolle
Version vom 11. März 2016. - Ilmenau : Technische Universität Ilmenau, Fakultät für Elektrotechnik und Informationstechnik, Fachgebiet Kommunikationsnetze, 2016. - 350 Seiten. - (Unicopy Campus Edition) ISBN 3-942646-05-6
"Dieses Werk basiert auf dem Buch "Digitale Sprach- und Datenkommunikation" von Seitz u.a. (2007), welches wesentlich ergänzt und erweitert wurde." (Seite 5)
Exploiting already deployed sensor networks for opportunistic emergency communication services. - In: 14. GI/ITG KuVS Fachgespräch Sensornetze der GI/ITG Fachgruppe Kommunikation und Verteilte Systeme, (2015), S. 57-60
http://nbn-resolving.de/urn:nbn:de:bvb:29-opus4-66176
An approach for QoS-aware routing in mobile ad hoc networks. - In: 2015 12th International Symposium on Wireless Communication Systems (ISWCS), ISBN 978-1-4673-6540-6, (2015), S. 626-630
http://dx.doi.org/10.1109/ISWCS.2015.7454423
Integration of 802.15.4 based wireless sensor networks into existing intra-vehicle networks. - In: 2nd International Scientific Symposium "Sense. Enable. SPITSE." 2015, 22 June - 03 July 2015, ISBN 978-5-7629-1647-9, (2015), S. 168-171
With an increasing number of sensors within vehicles wireless solutions become more interesting in order to reduce manufacturing costs and wiring complexity. Besides that, wireless sensors will enable new applications that are difficult to achieve with wired solutions. A pure wireless solution has to guarantee the same quality of service as traditional wired networks while operating in a rather harsh environment. This is the most challenging task and therefore a suitable integration of the wireless technology into the existing vehicular networks is needed. In our contribution we discuss different existing networks, their historic development and compare them in order to identify suitable candidates for the mentioned integration. Finally, we present an option to couple 802.15.4 devices with Bluetooth and show preliminary results.
Robust reliability-aware buffer management for DTN multicast in disaster scenarios. - In: 2015 7th International Workshop on Reliable Networks Design and Modeling (RNDM), ISBN 978-1-4673-8051-5, (2015), S. 274-280
http://dx.doi.org/10.1109/RNDM.2015.7325240
Comparison of application and network layer name resolution in mobile ad hoc networks. - In: PE-WASUN'15, ISBN 978-1-4503-3759-5, (2015), S. 71-76
http://dx.doi.org/10.1145/2810379.2810380
Vehicular ad hoc networks: multi-hop information dissemination in an urban scenario. - In: 2015 38th International Conference on Telecommunications and Signal Processing (TSP), ISBN 978-1-4799-8499-2, (2015), S. 65-70
http://dx.doi.org/10.1109/TSP.2015.7296225
Impact of traffic and mobility patterns on network performance in disaster scenarios. - In: Proceedings of the 21st International Conference on Mobile Computing and Networking, Sept. 7 - 11, 2015, Paris, France, ISBN 978-1-4503-3911-7, (2015), S. 9-12
Literature survey on recent progress in inter-vehicle communication simulations. - In: Journal of Transportation Technologies, ISSN 2160-0481, Bd. 5 (2015), 3, S. 159-168
http://dx.doi.org/10.4236/jtts.2015.53015
Inter-domain routing and name resolution using border nodes. - In: 2015 International Conference on Computing, Networking and Communications (ICNC), ISBN 978-1-4799-6960-9, (2015), S. 950-956
http://dx.doi.org/10.1109/ICCNC.2015.7069474
Framework for flexible multi-metric path selection for next generation network. - In: Journal of Advances in Computer Networks, ISSN 1793-8244, Bd. 3 (2015), 1, S. 42-48
http://dx.doi.org/10.7763/JACN.2015.V3.140
A realistic underlay concept for delay tolerant networks in disaster scenarios. - In: 2014 10th International Conference on Mobile Ad-hoc and Sensor Networks (MSN), ISBN 978-1-4799-7395-8, (2014), S. 163-170
http://dx.doi.org/10.1109/MSN.2014.29
Buffer management for reliable multicast over delay tolerant networks. - In: 2014 10th International Conference on Mobile Ad-hoc and Sensor Networks (MSN), ISBN 978-1-4799-7395-8, (2014), S. 171-178
http://dx.doi.org/10.1109/MSN.2014.30
Poster: Address resolution for vehicular communications in heterogeneous environments. - In: 2014 IEEE Vehicular Networking Conference (VNC), ISBN 978-1-4799-7661-4, (2014), S. 123-124
http://dx.doi.org/10.1109/VNC.2014.7013326
Peer-to-peer communication for computer-supported collaborative learning : the PeCoCC framework. - In: eLmL 2014, ISBN 978-1-63266-250-7, (2014), S. 25-29
Delay tolerant handover for heterogeneous networks. - In: IEEE 39th Conference on Local Computer Networks (LCN), 2014, ISBN 978-1-4799-3781-3, (2014), S. 370-373
http://dx.doi.org/10.1109/LCN.2014.6925794
Movement patterns for mobile networks in disaster scenarios. - In: 2014 IEEE 15th International Symposium on a World of Wireless Mobile and Multimedia Networks (WoWMoM), (2014), insges. 6 S.
http://dx.doi.org/10.1109/WoWMoM.2014.6918914
Framework zur Simulation von realistischen Einsatzszenarien. - In: Informatik 2014, (2014), S. 953-963
13. Ilmenauer TK-Manager Workshop : Technische Universität Ilmenau, 12. September 2014 : Tagungsband. - Ilmenau : ilmedia, 2014. - 1 Online-Ressource (97 Seiten)
https://nbn-resolving.org/urn:nbn:de:gbv:ilm1-2014200122
Routing-based and location-aware service discovery in Mobile Ad-hoc Networks. - In: 2014 International Conference on Information Networking (ICOIN), ISBN 978-1-4799-3690-8, (2014), S. 7-12
http://dx.doi.org/10.1109/ICOIN.2014.6799474
Software-based management for ethernet networks. - In: Wireless personal communications, ISSN 1572-834X, Bd. 74 (2014), 3, S. 1021-1032
http://dx.doi.org/10.1007/s11277-013-1341-3
Address resolution in mobile ad hoc networks using adaptive routing. - In: ICSNC 2012, ISBN 978-1-62276-585-0, (2013), S. 7-12
Multinet - a wake-up protocol for multicast network groups. - In: 2013 11th Workshop on Intelligent Solutions in Embedded Systems (WISES 2013), ISBN 978-1-4799-1618-4, (2013), S. 83-88
Stream reservation MAC protocol for wireless ad-hoc networks. - In: IEEE Jordan Conference on Applied Electrical Engineering and Computing Technologies (AEECT), 2013, ISBN 978-1-4799-2303-8, (2013), insges. 6 S.
http://dx.doi.org/10.1109/AEECT.2013.6716431
User centric multi-purpose messaging framework. - In: International Conference on ICT Convergence (ICTC), 2013, ISBN 978-1-4799-0696-3, (2013), S. 66-71
The changing demography requires new kinds of support for elderly people. Technical assistance systems could allow (aged) people to stay longer in well-known neighborhoods. While utilizing familiar media usage habits, the acceptance rate of a technical assistance system will be increased. Therefore, as many as possible potential communication methods between users and the assistance system are required. This paper describes a communication middleware for an assistance system which was originally designed and developed within the finished research project called "WEITBLICK". The middleware has been continuously enhanced independently from the research project. Further, the paper will discuss two use cases and two demonstration applications which are utilizing the described communication middleware.
http://dx.doi.org/10.1109/ICTC.2013.6675308
Reliable multicast in heterogeneous mobile ad-hoc networks. - In: Electronic communications of the EASST, ISSN 1863-2122, Bd. 56 (2013), insges. 11 S.
http://dx.doi.org/10.14279/tuj.eceasst.56.811.806
A framework for smart home services with secure and QoS-aware communications. - In: International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, ISSN 1805-5443, Bd. 2 (2013), 1, S. 9-17
http://dx.doi.org/10.11601/ijates.v2i1.14
The impact of host name hashing on name resolution traffic. - In: 2013 Fifth International Conference on Ubiquitous and Future Networks (ICUFN), ISBN 978-1-4673-5990-0, (2013), S. 729-734
http://dx.doi.org/10.1109/ICUFN.2013.6614916
Latency avoidance by route assumption for reactive routing protocols. - In: 2013 Fifth International Conference on Ubiquitous and Future Networks (ICUFN), ISBN 978-1-4673-5990-0, (2013), S. 707-711
http://dx.doi.org/10.1109/ICUFN.2013.6614912
Implementation and validation of an address resolution mechanism using adaptive routing. - In: International Conference on Information Networking (ICOIN), 2013, (2013), S. 95-100
http://dx.doi.org/10.1109/ICOIN.2013.6496358
Hybrid spectrum sharing in dynamic spectrum access networks. - In: International Conference on Information Networking (ICOIN), 2013, (2013), S. 324-329
http://dx.doi.org/10.1109/ICOIN.2013.6496398
IP-based access to sensor networks enabled by a transparent proxy server. - In: International Conference on Information Networking (ICOIN), 2013, (2013), S. 623-627
http://dx.doi.org/10.1109/ICOIN.2013.6496698
Recursive layering of forwarding on gates and traffic engineering middleware for Ethernet. - In: International Conference on Information Networking (ICOIN), 2013, (2013), S. 600-605
http://dx.doi.org/10.1109/ICOIN.2013.6496694
Self-organized network optimization via placement of additional nodes. - In: Proceedings of the Joint Workshop of the German Research Training Groups in Computer Science, (2012), S. 264
Self-organized naming and adress resolution in heterogeneous networks. - In: Proceedings of the Joint Workshop of the German Research Training Groups in Computer Science, (2012), S. 260
Localization using UAVs. - In: Proceedings of the Joint Workshop of the German Research Training Groups in Computer Science, (2012), S. 261
Non-deterministic approach for hypercomplex orthogonal design (NAHOD). - In: International Symposium on Wireless Communication Systems (ISWCS), 2012, ISBN 978-1-4673-0762-8, (2012), S. 711-715
http://dx.doi.org/10.1109/ISWCS.2012.6328460
Deterministic approach for hypercomplex generalized orthogonal design (DAHOD). - In: International Symposium on Wireless Communication Systems (ISWCS), 2012, ISBN 978-1-4673-0762-8, (2012), S. 706-710
http://dx.doi.org/10.1109/ISWCS.2012.6328459
Quality of service concept for smart home services. - In: Fourth International Conference on Ubiquitous and Future Networks (ICUFN), 2012, (2012), S. 266-271
http://dx.doi.org/10.1109/ICUFN.2012.6261708
Secure and QoS-aware communications for smart home services. - In: 35th International Conference on Telecommunications and Signal Processing (TSP), 2012, ISBN 978-1-4673-1117-5, (2012), S. 11-17
http://dx.doi.org/10.1109/TSP.2012.6256188
12. Ilmenauer TK-Manager-Workshop : Technische Universität Ilmenau, 7. September 2012 : Tagungsband. - Ilmenau : Universitätsverlag Ilmenau, 2012. - 1 Online-Ressource (134 Seiten)Literaturangaben
Im Februar 1995 veranstaltete das Fachgebiet Kommunikationsnetze erstmalig einen Workshop zu "Branchentypischen Anwendungen in der Informations- und Telekommunikationstechnik". Er diente der Diskussion des Weiterbildungsbedarfs mit Partnern aus der Praxis in Vorbereitung des berufsbegleitenden Weiterbildungsstudienganges "Telekommunikations-Manager". Dieser, kurz TK-Manager genannte Studiengang wird seit 1996 erfolgreich durchgeführt, hat bereits etwa 100 Absolventen in einen neuen Arbeitsabschnitt entlassen. Seit 1998 findet regelmäßig der "Ilmenauer TK-Manager Workshop" statt, an welchem Absolventen des Studienganges mit interessierten Partnern aus anderen Bildungseinrichtungen und der Wirtschaft ihre Erfahrungen austauschen und aktuelle Entwicklungen aus dem Informations- und Kommunikationssektor diskutieren. Das Spektrum der Vorträge umfasst daher Themen aus der Informations- und Kommunikationstechnik über Protokoll- und Dienstaspekte in speziellen Anwendungsbereichen (wie beispielsweise Green Computing, Automotive, Cloud Computing) bis hin zu ökonomischen, personellen oder rechtlichen Fragstellungen mit Bezug zur Telekommunikation. In diesem Jahr führen wir nunmehr den Workshop zum zwölften Mal durch, das dritte Mal innerhalb des Internationalen Wissenschaftlichen Kolloquiums (IWK). Die Beiträge des Workshops und darüber hinaus aktuelle Forschungsthemen des Fachgebiets Kommunikationsnetze, das für den TK-Manager federführend ist, sind in diesem Tagungsband zusammengefasst.
http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2012100167
Cooperative infotainment services platform for ambient assisted living. - Online-Ressource (PDF-Datei: 6 S., 340 KB)Druckausg.: Proceedings of the IADIS International Conferences Web Based Communities 2011, Collaborative Technologies 2011 and Internet Applications and Research 2011 : part of MCCSIS 2011, Rome, Italy, 22 - 24 July 2011. - [S.l.] : IADIS Press, 2011. - ISBN 978-972-893940-3. - S. 227-232
According to the senescent society, the current demographic trend has a big challenge for development of new and better services for elderly people. Today, elderly people experience better health and sanity than elderly people some years ago. Therefore, there is a need for healthcare, infotainment, e-learning and other services that can satisfy the desires of this group. But the comparison of different learning platforms and currently developed or deployed architectures in this field identifies the absence of the combination between ambient assisted living and e-learning services. Our proposed solution called CrISP-AAL is to overcome this weakness. It uses the OpenAAL platform and consolidates services for ambient assisted living and e-learning. These services are optimized by exploiting context information obtained from the users. To gather context information, we utilize a network of sensors, which are disseminated through the environment or worn by users. The following paper describes two practical scenarios for using our CrISP-AAL system. It demonstrates that this system can support a humanly responsible and self-contained life for elderly people in a familiar environment and ensures their integration into society.
http://www.db-thueringen.de/servlets/DocumentServlet?id=20174
Widely linear SIMO filtering for hypercomplex numbers. - In: IEEE Information Theory Workshop (ITW), 2011, ISBN 978-1-4577-0438-3, (2011), S. 390-395
http://dx.doi.org/10.1109/ITW.2011.6089486
Energy consumption of ethernet compared to automotive bus networks. - In: Proceedings of the Ninth Workshop on Intelligent Solutions in Embedded Systems (WISES), 2011, ISBN 978-1-4577-1550-1, (2011), S. 61-66
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6086020
A comparison of time synchronization in AVB and FlexRay in-vehicle networks. - In: Proceedings of the Ninth Workshop on Intelligent Solutions in Embedded Systems (WISES), 2011, ISBN 978-1-4577-1550-1, (2011), S. 67-72
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6086021
A network partitioning recovery process in mobile ad-hoc networks. - In: IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), 2011, ISBN 978-1-4577-2013-0, (2011), S. 32-36
Mobile Ad-hoc Networks (MANETs) are of significant scientific and practical interest in many areas of human life. MANETs also play a vital role in providing an uninterrupted communication service between members of a rescue team in natural or anthropogenic disasters.
http://dx.doi.org/10.1109/WiMOB.2011.6085393
Application and realization of gateways between conventional automotive and IP/Ethernet-based networks. - In: 48th ACM/EDAC/IEEE Design Automation Conference (DAC), 2011, ISBN 978-1-4503-0636-2, (2011), S. 1-6
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5981699
Concept of a communication middleware for ambient assisted living environments : supplying a homogeneous communication interface in a heterogeneous infrastructure. - In: Proceedings of International Workshop on Ubiquitous Healthcare and Supporting Services (UBI-HEALTH 2010), ISBN 978-952-604112-4, (2011), insges. 5 S.
The changing demography requires new kinds of support for elderly people. Technical assistance systems could allow (aged) people to stay longer in well-known neighborhoods. While utilizing familiar media usage habits, the acceptance rate of a technical assistance system will be increased. Therefore, as many as possible potential communication methods between users and the assistance system are required. A communication middleware, which is discussed in this paper, has the aim to provide a flexible and uniform interface for elderly people assistance systems.
Das NGN im Kontext der Generation 50+. - In: Intelligent Wohnen, (2011), S. 148-155
Design and development of a communication middleware for ambient assisted living environments. - In: Crossing borders within the ABC, (2010), S. 11-16
http://www.db-thueringen.de/servlets/DocumentServlet?id=16770
WEITBLICK - Infrastruktur für eine bedarfsgerechte Dienstleistungsvermittlung. - In: Ambient assisted living, ISBN 978-380-07313-8-1, (2009), insges. 5 S.
Entwurf einer Client-Middleware zur Unterstützung kontextsensitiver Dienste. - In: Mobilkommunikation, (2009), S. 59-64
Sowohl individuelle Bedürfnisse der Nutzer als auch technische Rahmenbedingung beeinflussen das Angebot von Kommunikations- und Informationsdiensten. Um für jeden Nutzer einen optimal angepassten Dienst bereitstellen zu können, muss dessen Kontext berücksichtigt werden. Ziel dabei ist es, die Dienstnutzung möglichst flexibel und unabhängig zu gestalten. Mobile Ad-Hoc-Netze bieten aufgrund ihrer flexiblen Topologie große Vorteile gegenüber herkömmlichen Infrastrukturnetzwerken. Das Ad-hoc On-demand Distance Vector-Routingprotokoll (AODV) ermöglicht die Verwaltung dynamischer Topologien in Ad-Hoc-Netzen. Daneben bietet das Protokoll vielseitige Möglichkeiten, durch geringfügige Anpassungen zusätzliche Informationen zu übermitteln. Auf der Grundlage von einigen AODV-Protokollergänzungen ist es gelungen, kontextsensitive Dienste zu suchen bzw. zu nutzen. In einer Demonstratorumgebung wurden die theoretischen Konzepte in der Praxis erprobt. Der vorliegende Artikel befasst sich mit Konzepten und deren Implementierung einer Client-Middleware zur Unterstützung kontextsensitiver Dienstnutzung.
Solving the firewall and NAT traversal issues for SIP-based VoIP. - In: International Conference on Telecommunications, 2008, ISBN 978-1-4244-2035-3, (2008), insges. 6 S.
Voice over Internet Protocol (VoIP) - Telefonieren über Internet - gewinnt immer mehr an Beliebtheit. VoIP ist eine neue Technologie mit einigen Kinderkrankheiten. Einige von denen sind mir Besonderheiten der Netzwerktopologie verbunden, wie der Einsatz von Firewalls und Network Address Translator (NAT). Dieser Artikel beschäftigt sich mit Problemen von SIP-basierterer VoIP. Session Initiation Protocol (SIP) ist heutzutage das meist benutzte Protokoll für VoIP. Leider, eine VoIP-Kommunikation kann nicht zustande kommen, wenn ein von VoIP-Telefonen sich hinter einem NAT oder einem eingeschränkten Firewall befindet. Jedes VoIP-Telefonat schließt drei zufällig gewählte UDP-Ports ein, die auf dem Firewall frei geschaltet sein müssen. Das ist aber wegen Sicherheitsbedenken nicht immer möglich. In diesem Artikel wird eine Software mit Namen "SIP-RTP-Proxy" (SRP) präsentiert, die diese oben beschrieben Probleme löst. SRP arbeitet wie ein "Session Border Controller" (SBC). SRP nimmt entgegen und leitet weiter SIP-Packete und RTP/RTCP-Ströme. Eine Besonderheit von dieser Lösung ist die Möglichkeit, SRP in einem privaten Netz zu platzieren. Wobei bei anderen Lösungen muss die entsprechende Software entweder direkt auf einem NAT-Gateway oder im öffentlichen Internet sich befinden. - Das Ziel dieses Projektes war die Implementierung einer universalen Lösung zur NAT- und Firewall-Problemen für VoIP, die in kleinen Unternehmen und in privaten Hausnetzen Ihre Verwendung finden kann. SRP kann auf verschiedenen Betriebsystemen installiert werden und erfordert keine Änderungen an den VoIP-Telefonen oder an TK-Anlagen.
http://dx.doi.org/10.1109/ICTEL.2008.4652645
Eine Architektur zur kontextsensitiven Dienstvermittlung auf Routingebene. - In: [Workshop E-Government und Digitale Archive - Workshop Gesundheitstelematik und eGK - Workshop SOA und EU-Dienstleistungsrichtlinie in der Öffentlichen Verwaltung - Workshop Security for Web Services and SOA - Workshop Software, Services und Plattformen für Neue Infrastrukturen in der Telekommunikation - Workshop Modellbasiertes Testen - Workshop Informationssysteme mit Open Source - Workshop Mobile and Embedded Interactive Systems - Workshop Vorgehensmodelle in der Praxis - Workshop IT-gestütztes Wissensmanagement - Workshop Elektronische Wahlen, Elektronische Teilhabe, Societyware: Beherrschbare Systeme? Wünschenswerte Systeme? - Workshop Mobiles Spielen], (2008), S. 145-151
Durch die sich seit den letzten Jahren vollziehende Konvergenz der Netze entsteht ein Bedarf nach neuen Methoden zur Dienstsuche. Diese müssen so gestaltet sein, dass sowohl Ad-hoc- als auch Infrastrukturnetze unterstützt werden. Daneben forciert der gegenwärtige Trend zum ubiquitären und pervasiven Computing die Forderung nach Dienstangeboten, die individuell auf die Bedürfnisse einzelner Nutzer angepasst sind. Im folgenden Artikel wird eine Architektur vorgestellt, die beide Anforderungen erfüllt. Realisiert wird dies mit Hilfe des kontextsensitiven Routings. Dazu erfolgt die Dienstsuche und -vermittlung in Abhängigkeit des Nutzerkontextes auf Netzwerkebene.
Tagungsband : Technische Universität Ilmenau, 12. September 2008
[Online-Ausg.]. - Ilmenau : Univ.-Verl. Ilmenau, 2008. - Online-Ressource (PDF-Datei: 96 S., 7,23 MB)Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
http://www.db-thueringen.de/servlets/DocumentServlet?id=11170
Ontologie-basierte kontextsensitive Dienste für die Bedürfnisse pflegebedürftiger Menschen. - In: Seniorengerechte Schnittstellen zur Technik, (2008), S. 23-30
Literaturangaben
Die fortschreitende Entwicklung moderner Kommunikationsnetze ermöglichte in den vergangenen Jahren das Entstehen intelli-genter Systeme, die in der Lage sind Dienste anzubieten, die sich an den Nutzer und dessen Präferenzen anpassen. Diese Dienste nennt man kontextsensitive Dienste. - Unter Zuhilfenahme von Kontextinformationen, die über menschliche Interaktionen mit der Umwelt gewonnen werden (wie beispielsweise der Standort eines Benutzers, die Tageszeit, Menschen und Geräte in der Nähe eines Benutzers, dessen aktuelle Aktivität), werden geeignete Dienste ausgewählt und angeboten. - In diesem Beitrag wird die grundlegende Architektur für ein System vorgestellt, welches solche kontextsensitiven Dienste für die Bedürfnisse pflegebedürftiger Menschen, die allein zu Hause leben und Betreuung brauchen, anbieten kann.
Handover-aware SIP-based VoIP provided by a roaming-enabled architecture (REACH). - In: IEEE Sarnoff Symposium, 2008, ISBN 978-1-4244-1843-5, (2008), insges. 6 S.
The protocols of Voice-over-IP (SIP, RTP and RTCP) have several issues, for example the NAT and the firewall problem. They lead to solutions such as "Back-to-back User Agents" (B2BUA), "Session Border Controllers" and helper-protocols such as "Simple Traversal of UDP through NATs" (STUN) and "Traversal Using Relay NAT" (TURN). - This paper focusses on a different challenge, a problem that arises when a user becomes mobile and his IP-enabled telephone is forced to change its network access technology due to network coverage issues ("perform a vertical handover"). We present a middleware-based solution that makes SIP-based VoIP handover-aware and effectively solves the NAT and firewall problem. - This approach builds on the "Roaming-Enabled Architecture" (REACH), a plugin-driven middleware that uses proxy servers. REACH offers for multiple data capturing schemes required to provide an easy-to-use handover-aware solution, but VoIP was not supported yet. Here, we present a self-implemented "Session Border Controller" for SIP and RTP that was divided into two designed to be used within the infrastructure of REACH. - This mechanism adds full support for VoIP to the REACH software suite, allowing telephony in combination with any kind of vertical handover such as hard-, soft and softer handovers in IP-based networks of any kind.
http://dx.doi.org/10.1109/SARNOF.2008.4520062
REACH: a roaming-enabled architecture for multi-layer capturing. - In: IEEE Wireless Communications and Networking Conference, 2008, (2008), S. 2699-2704
Modern mobile PCs have different kinds of network access technologies, such as wire-based interfaces (Ethernet) or wireless adapters (IEEE 802.11 WLAN, GPRS/GSM or UMTS). Ongoing research deals with the problem of performing a "vertical handover", that allows switching your currently used network access technology on-the-fly without interruption of the application sessions. - The "Roaming-Enabled Architecture" (REACH) presented in this paper is a middleware-based approach that does not use IP mobility extensions and does not depend on modifications of the infrastructure. In fact, it is related to the already published mechanisms {MSOCKS} and the {Universal Seamless Handoff Architecture} (USHA). - However, REACH is designed plugin-driven in order to support multiple coexistent schemes to perform vertical handovers on different layers of the Internet protocol suite. Each {relay plugin} is able to intercept data coming from the applications, which is necessary to route all data through the protection schemes in order to make the mobile nodes handover-aware. - Hard and soft handovers are supported by REACH as well as softer handovers and channel bundling. A mobile node can connect to multiple proxy servers simultaneously in order to utilize different services, take care of some forms of performance degradation that are related to triangle routing and to do load balancing.
http://dx.doi.org/10.1109/WCNC.2007.473
Media-push technology in multimedia mobile environment. - In: 4th IEEE Consumer Communications and Networking Conference, 2007, ISBN 978-1-4244-0667-8, (2007), S. 1182-1183
http://dx.doi.org/10.1109/CCNC.2007.243
Digitale Sprach- und Datenkommunikation : Netze - Protokolle - Vermittlung. - München [u.a.] : Fachbuchverl. Leipzig im Carl Hanser Verl., 2007. - 361 S. ISBN 3-446-22979-5
Literaturangaben
Service discovery modelling for intelligent building network. - In: Information technology and electrical engineering - devices and systems, materials and technologies for the future, (2006), insges. 9 S.
http://www.db-thueringen.de/servlets/DocumentServlet?id=13076
A VPN-driven infrastructure for vertical handovers. - In: IEEE Sarnoff Symposium, 2006, ISBN 978-1-4244-0002-7, (2006), insges. 4 S.
Mobile PCs are equipped with a multitude of network access technologies, such as IEEE 802.11 WLAN, GPRS over GSM or wire-based Ethernet. If the user wants to access the Internet he has to choose one of the technologies and has to use it for the whole duration of the session. But this is problematic when the user wants to be mobile and has to change network access technologies. It was quite problematic so far to start a session using Ethernet and then perform a seamless vertical handover to WLAN when the user becomes mobile. The protocols used in the Internet were not designed with mobility in mind. Some proposals were made to circumvent these problems, for example by using enhancements like Mobile IP or IPv6 , but a solution that could easily be applied to a multitude of different "real-world systems" has not been presented yet. We developed a method that implements a data transfer mechanism that is able to handle the problems caused by mobility and vertical handovers. Our first approach made use of the universal proxy protocol SOCKSv5 (RFC 1928) to relay all data to a central proxy server using a handover-capable transport mechanism. Here, "socksified" applications were needed, which was not feasible in all possible scenarios˜{Evers2004}. This paper presents our latest enhancement that makes use of a Virtual Private Network (VPN) in combination with our handover capable transport mechanism. This offers a full VPN-based network access to all applications running on the mobile node and is able to do all handover related work transparently. VPN-clients are available for all relevant operating systems. The handover management software was implemented using C++ and runs on GNU/Linux, Mac OS and Microsoft Windows. The architecture offers full mobility to the end user without the need of modifications to the applications or the operating system itself.
http://dx.doi.org/10.1109/SARNOF.2006.4534787
Digital television in the near future. - In: Information technology and electrical engineering - devices and systems, materials and technologies for the future, (2006), S. 19-21
Definition and implementation of context information. - In: Joint 2nd Workshop on Positioning, Navigation and Communication 2005 (WPNC '05) & 1st Ultra-Wideband Expert Talk 2005 (UET '05), (2005), S. 63-68
A new vision of control for a smart home. - In: Proceedings of the First International Conference on Web Information Systems and Technologies, (2005), S. 117-124
Residential gateway for the intelligent building : a design based on integration, service and security perspective. - In: Proceedings of the First International Conference on Web Information Systems and Technologies, (2005), S. 99-103
An architecture for context-sensitive telecommunication applications. - In: Proceedings of the First International Conference on Web Information Systems and Technologies, (2005), S. 40-47
A touristic assistance system as an example of symbiosis of technologies and strategies from robotics, mechatronics and biomedical engineering. - In: 3rd International Symposium on Adaptive Motion in Animals and Machines, (2005), Seite LM-1
Push-to-talk over cellular networks. - In: Session 4-10, (2004), S. 411-416
Positioning in an IEEE 802.11 wireless local area network. - In: Session 4-10, (2004), S. 381-386
Mobile digitale Kommunikation : Standards, Netze und Applikationen. - [Landsberg/Lech] : Verl. Moderne Industrie, 2004. - 93 S.. - (Die Bibliothek der Technik ; 268) ISBN 3937889027
Literaturverz. S. 92 - 93
Experiments with multi-modal interfaces in a context-aware city guide. - In: Human-computer interaction with mobile devices and services, (2003), S. 116-130
http://dx.doi.org/10.1007/b12029
Tele-learning for mobile users : a seminal approach for wireless networks. - In: Proceedings and our portrait, (2003), insges. 9 S.
Information without barriers : a new form of ubiquitous computing. - In: Proceedings and our portrait, (2003), insges. 2 S.
Content management systems for mobile tele-education. - In: Tagungsband, (2003), S. 371-380
Context-sensitive routing in mobile and ad-hoc networks. - In: Informations- und Elektrotechnik - Werkstoffe, Bauelemente, Systeme und Technologien für die Zukunft, (2003), S. 49-50
Verteilte Informationssysteme : Integration von Datenübertragungstechnik und Datenbanktechnik. - Heidelberg : dpunkt-Verl., 2003. - XVII, 471 S. ISBN 3-89864-188-0
Literaturangaben
An agent based service discovery architecture for mobile environments. - In: EurAsia-ICT 2002: Information and Communication Technology, (2002), S. 350-357
https://doi.org/10.1007/3-540-36087-5_41
Mobile agents for discovering and accessing services in nomadic environments. - In: Mobile Agents for Telecommunication Applications, (2002), S. 269-279
http://dx.doi.org/10.1007/3-540-36086-7_25
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