The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Testing new communication concepts in automotive scenarios using field tests is expensive and consumes a lot of time. Several simulation frameworks and tools exist to deal with these constraints of scalability and time. However, all of them require profound background knowledge for building such a custom scenario. This crucial and necessary procedure is often time consuming and error-prone. The RACE...
In Smart Mobility scenarios, users depend on reliable and timely provision with travel-related information. The application of service-oriented concepts for bringing this information to the end user is a promising approach. Nevertheless, there has been surprisingly little work on service frameworks which explicitly take into account specific demands of Smart Mobility. Within this paper, a software...
Advanced driver assistance systems (ADAS) improve safety, energy efficiency and driver comfort. Such systems are commonly based on sensor data, however, sensor range is physically limited. A way to extend the sensing range is to share sensor reading with others, i.e., vehicles and infrastructure services. Since direct vehicle communication is not widely deployed and vehicles are often not driving...
Currently discussed handover protocols do not provide the means to allow holistic flow handover scheduling. However, flow scheduling leads to a performance boost resulting from efficient parallel network use and a match of network characteristics to application requirements. Mobile IPv6 with flow binding extension and route optimization fulfills most requirements. However, control data is redundantly...
In recent years, there has been a rapid growth in the spread of smartphones and thus in the utilization of mobile applications. Such applications require a substantial portion of the available energy. Since a short battery lifetime has a very negative impact for the user experience, application developers should have the skills and the knowledge to avoid energy-inefficient applications. In this paper,...
In urban crossroad areas the traffic flow is commonly not efficient. This results in an unnecessary high traffic density within cities and a resulting environmental pollution by the waste of fuel. To improve this situation, the driver should be enabled to better slow down, to better accelerate, to better decide, to better come in and to better follow within crossroads. This can be achieved by a C2X-based...
Over the last twenty years, energy conservation has always been of great importance to individuals, societies and decision makers around the globe. As a result, IT researchers have shown a great interest in providing efficient, reliable and easy-to-use IT services which help users saving energy at home by making use of the current advances in Information and Communications Technology (ICT). Driven...
Internet access to multimedia content in vehicles today is only possible via cellular networks which offer insufficient bandwidth. By using additional V2X technology in a hybrid manner, vehicles can benefit from additional bandwidth to receive enhanced internet connectivity. We introduce a holistic concept that pursues the vision of an optimal use of available access networks in a vehicular environment...
The global trend of increased urbanization makes space rare in city environments in general and for parking in particular. In addition, cars become bigger and often use more than one parking space. As a result neighboring parking spaces can be affected by a parked car. So, a basically free parking space might be too narrow for an arriving car depending on the arriving car's size. Therefore, means...
Due to the wide deployment of indoor wireless local area networks (WLANs), the indoor planning became a research of interest for IT as well as networking researchers. As a result of this wide deployment, many IT applications and services started relying on the ready implemented WLAN infrastructure. Therefore, there is a need for reliable propagation models which are able to predict the WLAN signal...
With the growing maturity of the cloud computing paradigm, clouds are increasingly used for the delivery of complex multimedia services, rather than just simple infrastructure offers. A popular example of such services is cloud gaming, where video games are executed in the cloud and delivered to a (mobile) client via the Internet. While cloud gaming shifts the computationally complex and energetically...
An increasing number of modern smartphone applications are dependent on information updates from the cloud. To realize such information updates mainly two communication approaches are common, namely push- and pull. Due to different communication patterns both approaches differ in their energy consumption and notification latency. The energy constrained nature of mobile devices entails a sensible selection...
In many application scenarios, such as traffic guidance or ambient living, services need to notify mobile applications about status changes. Such notifications to mobile devices can be realized using two principal approaches, namely push- and pull-based. Apart from functional differences, the two options likely result in different energy consumption, which is an important aspect due to the battery...
Platform heterogeneity in wireless sensor networks is often seen as a major challenge for application development. Once embedded systems with different processor architectures, computational power, and memory are part of the same network, algorithms and applications must be adapted to this additional degree of complexity. As a result, current sensor network deployments are (with exception of the sink...
Dynamic load management, i.e., allowing electricity utilities to remotely turn electric appliances in households on or off, represents a key element of the smart grid. Appliances should however only be disconnected from mains when no negative side effects, e.g., loss of data or thawing food, are incurred thereby. This motivates the use of appliance identification techniques, which determine the type...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.