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.
Security in wireless sensor networks (WSNs) is very important. Traditional security schemes abandon compromised nodes and add a lot of redundancies to make the network resilient. These methods are not applicable to resource-limited WSNs. This paper proposes an adaptive and active defense mechanism with low power consumption. In our scheme, some nodes are configured as monitoring nodes to identify...
An improved DV-HOP localization algorithm is proposed based on the traditional DV-HOP localization algorithm in the paper. There will be a big error that using the nearest anchor node’s average hop distance instead of the average hop distance of all the anchor nodes that involved in the localizing in the traditional DV-HOP localization algorithm. Therefore, the improved algorithm introduces threshold ...
Traditional wireless sensor network (WSN) localization research only focused on heterogeneity of the beacons (nodes with known locations) and unknown nodes (nodes with unknown locations). But in practical application, except for heterogeneity of the beacons and unknown nodes, heterogeneity exists in both beacons in-group and unknown nodes in-group. In view of this, this paper presents a hybrid localization...
Recent advances in the electronics industry and wireless communication have enabled the evolution of innovative application domains. Smaller embedded processors and systems have allowed a new level of mobile communication and interaction in everyday life. In particular, the expansion of broadband wireless services and the advancement of handheld technology have allowed for real-time patient monitoring...
Summary form only given. In order to measure urban pipeline network signal and transmit the data to the data center in real time, the construction method about Supervisory Control and Data Acquisition (SCADA) system for urban pipeline network is presented based on GPRS and wireless sensor network through researching the characteristics of wireless sensor network as well as Zigbee technology. The system...
A primary criterion of designing wireless sensor networks is energy efficiency. Focused on the energy problem of routing protocol in wireless sensor networks, we must mention to the clustering routing protocol. LEACH is one of the first clustering routing algorithms for sensor networks, and it is able to increase the network lifetime. However, it selects a cluster head based on random probability...
With 250,000 NTD invested, 6 man power allocated, and 9 month time elapsed, we present BL-Live. The seemingly dumb, senseless BL Hall at National Taiwan University is transformed to an intelligent office building by a 30+ node sensor network. Two everyday services, Elevator Report and Smart Office, are implemented to better utilize the resources of the building and of the building residents. Our experience...
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.