GPRS/EDGE are the most frequently and widely used packet switch systems in 2G mobile communications network. Along with the 3G mobile communications system being commercialized, the convergence of 2G and 3G communications system is imperative. GPRS/EDGE terminal test set, which is a plus of TD-SCDMA terminal test set, intends to achieve RF conformance test of
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At present, concerning the communication of swarm robots, most of communication mode use radio to broadcast. Many bottleneck problems still exist in field of communication of swarm robot system, since the big number of robots and changing network topology. For instance, with the number of robots increasing, radio collisions increases, transmission speed and throughput reduce.
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With the development of the LTE (Long Term Evolution) technology, the LTE communication technologies in railway communication system present a good application prospect. How to meet the requirement of the signal quality in the environment of the special line information transmission, how to send the data without dropping packet, and to meet the customer demand
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As the Internet continues to grow and innovate, the disadvantages of its traditional architecture have produced more and more problems. A series of problems in routing scalability are caused by the user’s exponential growth, multhoming, traffic engineering, and the independence of service providers in various current applications. On the other hand, as the early host
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With the development of sensor technology, distributed information processing technology, computer technology and wireless communication technology, wireless sensor network provides an effective solution for safety monitoring system. However, different monitoring network application determines different wireless sensor network topology. Multiple functions in a network structure will make the design complexity, and it will be contrary to
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As the latest communication technology standards, Long Term Evolution(LTE) promotes wireless communication rate dramatically by adoptingmultiple new mobile communication technologies. Compared to3Gstandards, it adopts a smooth update style in network architecture, whichsaves investment. These two aspects make LTE technology morecompetitive in the area of mobile communication in the future. Althoughit is still in the pilot
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Currently, the3G/4G network is developing rapidly. The world is experiencing rapid integration of fixed and mobile networks. The rapid growth of mobile Internet and the strong development of mobile smart devices have brought great opportunities and challenges to service providers. Instant messaging, video and audio calls such a vast number of users often used services
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The traditional monitoring and control system for industrial equipments are used wired network technology with industrial field bus, industrial Ethernet and so on. There are some disadvantages for traditional method:limiting the moving of the industrial equipments, making the network structure not flexible, making the overhaul and maintenance for the system not convenient and increasing the
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With the development of information, people need some way to centralize the audio、video and data communication. The video conference is based on this. As an new way for conference service, video conference runs on the INTRANET and WAN, which provide a new network communication system to communicate video、audio and data for enterprise and government. It
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With the development of information, people need some way to centralize the audio、video and data communication. The video conference is based on this. As an new way for conference service, video conference runs on the INTRANET and WAN, which provide a new network communication system to communicate video、audio and data for enterprise and government. It
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