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Wireless Sensors Networks (WSN) have become vital in many areas and critical applications. Some applications require a reliable network and less maintenance, especially the power consumption. ZigBee standard shows the ability to be used for many applications that require low data transmission and low power consumption. The standard helps the overall network to reduce worries about the sensors power...
In combination with the current technologies related with smartphones and e-mail, an e-mail system based on Ophone and component technology is designed to construct security safeguard during sending and receiving of e-mail client software according to MOSS protocol and realize easy and quick receipt of e-mails by use of pre-fetching strategy thus to achieve the design and implementation of efficient...
Wireless Industrial communications is emerging technology after the Fieldbus in industrial field. Since the industrial control application is needed in wireless industrial technologies, WIA-PA standard is defining the protocol suite, system management, gateway, and security for low-data-rate wireless connectivity with fixed, portable, and moving devices supporting limited power consumption requirements...
The deployment of wireless technologies for device communication in the industrial control field is a challenging and promising issue mainly due to the increasing flexibility and the mobility. However, with limited resources such as computation capability and memory, traditional security solutions can not guarantee security requirements and communications overhead in industrial wireless networks....
Congestions in many-to-many videoconferencing are usually caused by multiple senders, the congestion information feedback, bottleneck link judge and sending rate adjust are much different from one-to-many multicasting. In this paper, we propose one multicast congestion control scheme based on end-to-end tomography (ET-MCC) for many-to-many videoconferencing. The end-to-end packet loss rates are measured...
The integration of distributed optical fiber temperature sensor with supervisory control and data acquisition (SCADA) system is proposed and implemented. In the implementation of the integration, both the compatibility with traditional system and the characteristics of distributed optical fiber temperature sensor is considered before Modbus TCP/IP protocol is chosen. The protocol is implemented with...
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