Catálogo de publicaciones - libros

This paper proposes an efficient approach for managing the security in WSN. Our approach uses the notion of public key cryptography in which two different keys are used for encryption and decryption of data. Our analysis and performance evaluations show that, our approach is viable with the specifications of today’s Berkley/Crossbow MICA2dot motes.

We propose a greedy algorithm to investigate the problem of how to schedule of a set of feasible transmissions under physical interference model. We also consider the fairness in scheduling to prevent some border nodes from starvation. We evaluate our algorithm through extensive simulation and the results show that our algorithm can achieve better aggregate throughput and fairness performance than 802.11 standard.

In broadband networks, dynamic service change affects the management system because of the variability in time to market, transmission quality and transport system. Therefore, reusability and maintainability become the important quality factors in Network Management System (NMS). An aspect-oriented software development method is a feasible solution for the evolvability of NMS. In this paper, we propose a method to generate aspects in a standard management information model using Aspect Conversion and Metric Calculation (ACMC) algorithm. We applied it ITU-T M.3100 and evaluated it via the ratio of reduced redundancy in point of crosscutting concerns.

Standby power is the energy consumed by appliances when they are not performing their main functions or when they are switched off. In this paper, we propose a Host-Agent based standby power control architecture in context-aware home network. The proposed architecture uses the IEEE 802.15.4 based ZigBee protocol between Host and Agent for communication and security. We have made an experiment on according to various context-aware scenarios using the implemented prototype devices.

We propose an end-to-end Soft QoS scheme designed to provide effective multimedia data traffic. Using a greedy algorithm, this scheme can satisfy the conditions required by the multimedia data traffic with QoS by processing first those data that have a higher order of priority. In addition, it is a suitable method for the system reference model as it can effectively support a next-generation mobile communication service for the upcoming Converged Network. The proposed end-to-end Soft QoS scheme satisfies the QoS conditions required by the Converged Network where WCDMA, HSDPA, and WiBro coexist.

As the trend of small, connected, computing devices weaved, with almost any type of daily useable object, increases drastically, the deployment of Wireless Multimedia Sensor Networks (WMSNs) becomes a necessity. Sensor networks stages to deliver multimedia content, forcing Quality of Service (QoS) to become an important issue on the already low-powered, energy constraint sensor nodes. Such a problem is proved to be NP-complete. We, in this paper, propose an energy-efficient, QoS-aware sensor routing protocol for such WMSNs. Our protocol is based on (MOGA) in particular. The protocol determines application-specific, near-optimal sensory-routes, by optimizing multiple parameters - QoS, and energy consumption. Simulation results demonstrate that the proposed protocol is capable of providing lower delay and lower energy consumption in comparison to other existing QoS-routing protocols for wireless sensor networks.

This paper represents a new clustering approach for wireless sensor network. It is a decentralized algorithm having the topology control information in each sensor node. A post leader selection algorithm is acted upon each of the clusters just after their formation. Experimental validation shows that the proposed scheme is an efficient approach for sensor node management.

This article describes an architecture providing capabilities to integrate multimedia services into a hardware-independent platform, enabling services via dynamic remote configuration on demand, and finally, establishing end-to-end QoS connections between devices located in different home networks. Based on existing standards like OSGi, UPnP and SIP, a multimedia service management is developed that maintains the current standards but proposes capability extensions in order to cover more complex demands beyond a local (private) network.

Devices connected to the home network demand in many cases services which are located outside the home network. For this reason one of the most important elements in the home network is the Residential Gateway. It will manage all subscribed services, work as central point to control all devices of the home network and provide an integration platform for various internal and external services. This paper proposes a solution based on OSGI and TR-069 to support auto-configuration of a residential gateway located in home network.

This paper presents the design of the TPEG-RFID event container and the results of a trial implementation. With regard to the designed TPEG-RFID event container, an example of its coding rules providing for RFID based bus-line information is presented. Implementation details of DMB data server and user terminal are also designed as software functional blocks. The presented implementation is an attempt to verify the feasibility of the designed TPEG-RFID application service system. In particular, the RFID based bus-line information service is specified. The test results show that users could utilize the current location based RFID application services with the designed system.