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.
Personalized recommendation technology provides the possibility for users to obtain academic resources quickly and accurately. However, the existing recommendation methods based on user's historical behaviors and paper contents are limited in terms of expanding user perspectives. The existing methods that evaluate the authority and quality of academic resources based on academic network ignore paper...
Wireless multimedia service is considered a promising application in the near future. However, current layered protocol stack is not conductive to provide adaptive multimedia streams in instable wireless environment. In this paper, a new Cross-Layer mechanism is proposed to solve this problem. A scalable video encoder can dynamically adjust its coding behavior according to the estimated available...
Sidebar is a complicated conference scenario, which was introduced by IETF XCON working group in Centralized Conferencing Framework (CCF) in 2007. H.248 protocol is suggested to handle media control by 3GPP in Converged MultiMedia Conference (CMMC) framework based on IMS. A new Media server Control Protocol (MCP) was proposed by IETF Mediactrl working group recently. However, both of them didn't elaborate...
This paper evaluates the performance of IMS-Based PoC service over three typical wireless access environment, such as GPRS, UMTS/WCDMA and WLAN/802.11. The contributions of this paper are: developing a NS2-based simulation platform with multiple wireless access environments which can be taken as a general platform for study; proposing a series-connected M/M/l queuing model to simulate the call processing...
IMS is a core subsystem that provides multimedia services in the next generation network. The architecture of IMS specifies a series of functional entities. In order to analyze and research the performance of IMS network and services more quickly and conveniently, an IMS simulation system model based on NS2 is proposed, the design and implementation of the key issues are given. Some simulation scenarios...
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.