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It is proved that wireless network is suitable for disaster information infrastructure because of its robustness, mobility and flexibility. However current conventional wireless networks have limit in communication distance because of low electro-magnetic power density, non-directional antenna. This is quite fatal as emergency network particularly in mountain areas like Japan. In order to solve those...
It is proved that wireless network is suitable for disaster information infrastructure because of its robustness, mobility and flexibility. However current conventional wireless networks have limit in communication distance because of low electro-magnetic power density, non-directional antenna. This is quite fatal as emergency network particularly in mountain areas like Japan. In order to solve those...
Because of the virtue mobility, flexibility, and convenience, more and more wireless network are used in our everyday life. During the move between two scales of different AP (Access Point), the quality of the services heavily depends on the seamless handoff scheme which provide less packet lost. There are many people propose lots of strategies to reduce packet lost and do many contribution to it...
In recent years, a lot of terminal mobility support schemes have been proposed. These schemes mainly focus on providing seamless mobility by reducing the handover delay. They work well when the handover takes place between two overlapping wireless networks. However, in some worst scenario, it is possible that a mobile node (MN) becomes disconnected from the network for some time before it can join...
The explosive demands of multimedia services have been grown up to support delay-sensitive applications, e.g., VoIP and streaming using codec. When a mobile node (MN) moves across different types of networks, the codec should be effectively adapted according to the significant change of network condition, i.e., throughput and delay. Therefore, in this paper, we propose a codec adaptation for vertical...
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