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.
Several kinds of sensors would be widely deployed with the development of the Internet of things (IoT). Each IoT information service provides individual sensory data. When a complex service request is submitted, composing multiple information services to satisfy customer's comprehensive demands efficiently becomes an important research issue. To address the issue of IoT information service composition,...
When the present channel used by the secondary user (SU) is detected to be busy due to the re-appearance of the primary user (PU) in cognitive radios, the SU has to search an out-band so that its transmission can be continued. In order to meet the QoS requirement, out-band sensing speed should be as fast as possible. How to reduce out-band sensing time employing cooperative spectrum sensing is proposed...
In this paper, we develop a multi-user cognitive radio sharing network based on opportunistic spectrum access, where primary and secondary users can peacefully coexist in the same system to share the spectrum and improve the utility of licensed spectrum. Under this scenario, we introduce two constraints to guarantee their successful transmission, interference temperature limit at the primary users...
This paper presents PC-CORP (power control based cooperative opportunistic routing protocol) for WSN (wireless sensor networks), providing robustness to the random variations in network connectivity while ensuring better data's forwarding efficiency in an energy efficient manner. Based on realistic radio model, we combine the region-based routing, rendezvous scheme, sleep discipline and cooperative...
Due to the characteristics of wireless mesh networks (WMNs) in terms of topology, transmission link and traffic, the conventional layered protocol design methods for wired networks can not guarantee the performance for WMNs. To reach a tradeoff between the efficiency of radio resources and QoS requirements such as high throughput and low delay, it is required to explore the new design method for WMNs...
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.