Multimedia broadcast multicast service(MBMS)with inherently low requirement for network resources has been proposed as a candidate solution for using such resources in a more efficient *** the other hand,the Next Gene...
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Multimedia broadcast multicast service(MBMS)with inherently low requirement for network resources has been proposed as a candidate solution for using such resources in a more efficient *** the other hand,the Next Generation Mobile Network(NGMN)combines multiple radio access technologies(RATs)to optimize overall network *** performance is becoming a vital indicator of the quality experience of mobile user equipment(UE).In contrast to the conventional vertical handover issue,the problem we are facing is how to seamlessly transmit broadcast/multicast sessions among heterogeneous *** this paper,we propose a new network entity,media independent broadcast multicast service center(MIBM-SC),to provide seamless handover for broadcast/multicast sessions over heterogeneous networks,by extensions and enhancements of MBMS and media independent information service(MIIS)***,a network selection scheme and a cell transmission mode selection scheme are proposed for selecting the best target network and best transmission *** schemes are based on a load-aware network capacity estimation *** results show that the proposed approach has the capability to provide MBMS over heterogeneous networks,with improved handover performance in terms of packet loss rate,throughput,handover delay,cell load,bandwidth usage,and the peak signal-to-noise ratio(PSNR).
Next Generation Mobile Network (NGMN) trends to converge multiple radio access technologies (RATs) to provide ubiquitous access service to users. As a ubiquitous system, a solution to support increasingly popular vide...
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The importance of understanding real-time OS is getting higher and higher from academic field to industrial field. And it is difficult not only to understand the concept of real-time OS but also implement applications...
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The importance of understanding real-time OS is getting higher and higher from academic field to industrial field. And it is difficult not only to understand the concept of real-time OS but also implement applications...
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The importance of understanding real-time OS is getting higher and higher from academic field to industrial field. And it is difficult not only to understand the concept of real-time OS but also implement applications working on it. We develop an educational material to study real-time OS. Our educational material can cover both, the concept of real-time OS and implementation of application. Usually we evaluate real-time OS with using microprocessor boards. However, microcomputer boards are difficult to keep using as educational materials because companies of microcomputer boards often change their specification of boards or discontinue products. Therefore, we use cygwin, which is UNIX environment working on Microsoft Windows OS, for simulation environment. Students do not need to prepare any actual equipment. We choose OSEK/VDX OS for real-time OS. Students can work OSEK/VDX OS on cygwin. We developed “Live cygwin” which can execute cygwin applications directly from CD ROM without installing on the PC. OSEK/VDX is an open standard specification developed for automotive embedded software in Europe. As executable code of OSEK/VDX OS on cygwin environment, we use TOPPERS ATK. TOPPERS ATK (Automotive Kernel) is open source code implemented of OSEK/VDX OS by TOPPERS (Toyohashi Open Platform for embedded Real-Time Systems). And we developed UML documentations of OSEK/VDX OS. These materials can help students' understanding the real-time OS through developing and simulating their programs. UML documentation is reference for them.
In this paper, we present the method for the hardware design. This method generates logic synthesizable HDL from the UML diagram automatically. And, we present the experiments by the use of our method. In the experime...
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Home automation and home network have been proposed more than 20 years. However they were not spread as widely as expected. After the Tohoku Earthquake in Japan, the smart grid, smart home has been focused for the pur...
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In a design approach for improving software quality and development efficiency, we propose a software design technique consisting of three items - concise functional partitioning, an assessment based software structur...
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In a design approach for improving software quality and development efficiency, we propose a software design technique consisting of three items-concise functional partitioning, an assessment based software structure,...
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We propose a mutually complementary wireless and wired network, developed for residences, to a larger university school building, resulting in practical, realizable communication. The design evaluation of the simple c...
We propose a mutually complementary wireless and wired network, developed for residences, to a larger university school building, resulting in practical, realizable communication. The design evaluation of the simple communication system brings about the possibility of practical application, which we call a “combined communication method” of mutually complementary wireless and wired networks. We experimented on wireless and an evaluation of the wired this time. We changed environment and carried out various experiments to know the situation of the electric wave in detail. The laboratory finding becomes the data helping a future study.
In this paper, we present the method for the hardware design. This method generates logic synthesizable HDL from the UML diagram automatically. And, we present the experiments by the use of our method. In the experime...
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In this paper, we present the method for the hardware design. This method generates logic synthesizable HDL from the UML diagram automatically. And, we present the experiments by the use of our method. In the experiments, the undergraduate students design hardware using our method and the other method of the handwriting design.
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