The current telecommunication network is undergoing profound changes, from the traditional circuit-switched network based program-controlled exchange, toward the IP network, to packet-switched network-based softswitch. Face IP network, the original traditional network troubleshooting techniques becomes increasingly applied no longer.The softswitch network, according to the function is divided into different levels and various functional levels of connectivity
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The IP Multimedia Subsystem or IP Multimedia Core Network Subsystem (IMS) is an architectural framework for delivering Internet Protocol (IP) multimedia services. It was originally designed by the wireless standards body 3rd Generation Partnership Project (3GPP), as a part of the vision for evolving mobile networks beyond GSM. Its original formulation (3GPP Rel-5) represented an
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After the computer and the Internet, Cyber-Physical Systems (CPS) will be the core of the next generation of information technology, integrated computation, communication and control in one body. It has been aroused increasing concern by the industry because of its great application prospects. This paper studies the MAC layer of IEEE 802.15.4 protocol which is
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After the computer and the Internet, Cyber-Physical Systems (CPS) will be the core of the next generation of information technology, integrated computation, communication and control in one body. It has been aroused increasing concern by the industry because of its great application prospects. This paper studies the MAC layer of IEEE 802.15.4 protocol which is
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As a result of the rapid development of modern networks, the multimedia applications emerging in endlessly on the Internet, and therefore the network performance requirements are higher. Traditional best-effort delivery service can not fully meet this demand for multimedia data transmission services. Therefore, the quality of service (QoS) routing becomes a trend, which is the
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With the economic development, the acceleration of the urbanization process and the growth of urban population, traffic problems have been more and more prominent, among which the urban public transportation has become the most important component. Various information systems is an important guarantee for the operation of the contemporary public transport system. Therefore, great importance
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With the continued development of network technology, many previously unimaginable applications has emerged, including VoIP, video conferencing and many other business demand the high network quality of service. These operations can be said with the emergence of the user’s actual needs, but they also exposed the emergence of many problems in addition to the current
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Both personal communication techniques and markets develop quickly with the application application of LTE(Long Term Evolution), which leads to the demand of data services, like positioning services, remote education, remote office, on-line game, music download and mobile TV, etc[1]. As networks provide services from single data or voice services to comprehensive business, different types of
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Internal network security, from the current situation analysis, with a focus on the export of isolation and filter firewall equipment, strengthen the safety of the terminal application software layout and management, but also some increase layout IDS, IPS monitor software, etc. Despite the means to protect network communication, but related information safety data points out,
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The home gateway becomes the important component of home network. And as a hinge of different network, connects Network Operator or home network. Home gateway becomes the key of network operator develops the integrated information services.The achievement and significance of the research is that home gateway software system based on embedded Linux fulfills the most
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