Abstract

Abstract

Abstract

Abstract
Nowadays it's common to find the same place covered by multiple access networks. For that reason, mobile terminals are normally equipped with multiple network interfaces, which allow users to take advantage of the heterogeneity of those networks. This paper presents an architecture capable of using, in a simultaneous way, the multiple network interfaces existent in the mobile terminal for accessing a video streaming service. With this goal in mind, a solution on the session layer was developed, allowing the creation of an abstraction layer for the intervening applications. The purposed solution is composed by two modules, responsible for the division and aggregation of the transmitted data through multiple interfaces. The obtained results show that the developed architecture is not only capable of interconnecting two machines through multiple interfaces in a simultaneous way, but it is also capable of processing a video stream division in an intelligent way, accordingly to the network conditions. © 2012 University of Split.

Abstract
A Biomedical Wireless Sensor Network (BWSN) is a special Wireless Sensor Network (WSN) with a small number of nodes designed for medical applications. These networks must ensure that medical data is delivered reliably and efficiently, M order to fulfil a sel of pre-established Quality of Service (QoS) requirements, In this way, the research community have been proposing new solutions to improve QoS in WSN, namely in routing protocols and power consumption efficiency. However, there slid a need for appropriate QoS guaranties ha BWSN. In this paper, possible QoS requirements of BWSN are discussed, together with a framework to automatically evaluate the performance of such QoS techniques. That framework was used together with simulators and operating systems appropriate for WSN, COOJA and Contiki OS, and proved to be a valuable tool for a proper evaluation of QoS parameters and metrics.

Abstract
Wireless Sensor Networks (WSNs) for medical purposes enables real-time (RT) acquisition of vital signals. In this context the network reliability, data integrity and RT delivery have extreme importance. The network should guarantee an appropriate level of Quality of Service (QoS). This paper presents the QoS parameters and metrics of standard telemedicine and WSNs based Medical Applications (MA), and a strategy, based on QoS monitoring, to prevent QoS degradation in WSNs for MA.