Software- defined networking （SDN） is a promising technology for next-generation networking and has attracted much attention from academics, network equipment manufacturer, network operators, and service providers. ...Software- defined networking （SDN） is a promising technology for next-generation networking and has attracted much attention from academics, network equipment manufacturer, network operators, and service providers. It has found center, and enterprise networks. applications in mobile, data The SDN architecture has a centralized, programmable control plane that is separate from the data plane. SDN also provides the ability to control and manage virtualized resources and networks without requiring new hardware technologies. This is a major shift in networking technologies.展开更多
Internet over satellites has been a hot research topic for some times.In addition to the development of the Internet applications and services over satellite,there are also significant developments in satellite commun...Internet over satellites has been a hot research topic for some times.In addition to the development of the Internet applications and services over satellite,there are also significant developments in satellite communication systems and networks with Ka band and high throughput satellites(HTS).These developments enhance greatly the role of展开更多
Since the first space probe flew to the Moon in 1959,over 200 deep-space exploration missions have already been carried out on the eight planets,various asteroids and comets in the solar system.Amount of deepspace sci...Since the first space probe flew to the Moon in 1959,over 200 deep-space exploration missions have already been carried out on the eight planets,various asteroids and comets in the solar system.Amount of deepspace scientific experiments promoted people to understand about the origin and evolution of the universe.展开更多
Taking advantage of spontaneous and infrastructure-less behavior, a mobile ad hoc network （MANET） can be integrated with various networks to extend communication for different types of network services. In the integ...Taking advantage of spontaneous and infrastructure-less behavior, a mobile ad hoc network （MANET） can be integrated with various networks to extend communication for different types of network services. In the integrated system, to provide inter-connection between different networks and prnvide data aggregation, the design of the-gateway is vital. In some integrated networks with muhiple gateways, proper gateway selection guarantees desirable QoS and optimization of network resource utilization. However, how to select gateway efficiently is still challenging in the integrated MANET systems with distributed behavior terminals and limited network resources. In this paper, we examine gateway selection problem from different aspects including information discovery behavior, selection criteria and decision-making entity. The benefits and drawbacks for each method are illustrated and compared. Based on the discussion, points of considerations are highlighted for future studies.展开更多
Network security protocols such as IPsec have been used for many years to ensure robust end-to-end communication and are important in the context of SDN. Despite the widespread installation of IPsec to date, per-packe...Network security protocols such as IPsec have been used for many years to ensure robust end-to-end communication and are important in the context of SDN. Despite the widespread installation of IPsec to date, per-packet protection offered by the protocol is not very compatible with OpenFlow and tlow-like behavior. OpenFlow architecture cannot aggregate IPsee-ESP flows in transport mode or tunnel mode because layer-3 information is encrypted and therefore unreadable. In this paper, we propose using the Security Parameter Index （SPI） of IPsec within the OpenFlow architecture to identify and direct IPsec flows. This enables IPsec to conform to the packet-based behavior of OpenFlow architecture. In addition, by distinguishing between IPsec flows, the architecture is particularly suited to secure group communication.展开更多
文摘Software- defined networking （SDN） is a promising technology for next-generation networking and has attracted much attention from academics, network equipment manufacturer, network operators, and service providers. It has found center, and enterprise networks. applications in mobile, data The SDN architecture has a centralized, programmable control plane that is separate from the data plane. SDN also provides the ability to control and manage virtualized resources and networks without requiring new hardware technologies. This is a major shift in networking technologies.
文摘Internet over satellites has been a hot research topic for some times.In addition to the development of the Internet applications and services over satellite,there are also significant developments in satellite communication systems and networks with Ka band and high throughput satellites(HTS).These developments enhance greatly the role of
文摘Since the first space probe flew to the Moon in 1959,over 200 deep-space exploration missions have already been carried out on the eight planets,various asteroids and comets in the solar system.Amount of deepspace scientific experiments promoted people to understand about the origin and evolution of the universe.
文摘Taking advantage of spontaneous and infrastructure-less behavior, a mobile ad hoc network （MANET） can be integrated with various networks to extend communication for different types of network services. In the integrated system, to provide inter-connection between different networks and prnvide data aggregation, the design of the-gateway is vital. In some integrated networks with muhiple gateways, proper gateway selection guarantees desirable QoS and optimization of network resource utilization. However, how to select gateway efficiently is still challenging in the integrated MANET systems with distributed behavior terminals and limited network resources. In this paper, we examine gateway selection problem from different aspects including information discovery behavior, selection criteria and decision-making entity. The benefits and drawbacks for each method are illustrated and compared. Based on the discussion, points of considerations are highlighted for future studies.
文摘Network security protocols such as IPsec have been used for many years to ensure robust end-to-end communication and are important in the context of SDN. Despite the widespread installation of IPsec to date, per-packet protection offered by the protocol is not very compatible with OpenFlow and tlow-like behavior. OpenFlow architecture cannot aggregate IPsee-ESP flows in transport mode or tunnel mode because layer-3 information is encrypted and therefore unreadable. In this paper, we propose using the Security Parameter Index （SPI） of IPsec within the OpenFlow architecture to identify and direct IPsec flows. This enables IPsec to conform to the packet-based behavior of OpenFlow architecture. In addition, by distinguishing between IPsec flows, the architecture is particularly suited to secure group communication.
