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Method and system for bi-directional exchange of data based on user-defined policies for the selection of a preferred datalink
Method and system for bi-directional exchange of data based on user-defined policies for the selection of a preferred datalink
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机译:基于用户定义的策略进行双向数据交换以选择首选数据链路的方法和系统
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摘要
A communications channel selection device aimed at solving the problems associated with selecting a preferred channel for two-way communication between an aircraft and the ground over TCP/IP packet-based networks. The device provides a means whereby policies for the selection of a preferred datalink are associated with the communications from aircraft-based applications so that communications are effected over the preferred channel according to a pre-defined set of policies. The device overcomes the challenges presented by the dynamic assignment of IP addresses to onboard systems by providing a method for: the discovery of dynamically assigned IP addresses (thereby enabling ground-initiated communications with an IP addressable entity) where such addresses relate to the preferred datalinks for active policies; queuing connect requests pending establishment of a connection to a ground-based system over a selected datalink; forwarding data over the selected datalink; mapping between the TCP/IP connection established and the connection over which the communicating application is communicating; defining policies such that they are understood by air-based and ground-based systems; a ground-based registry with which each onboard connecting application registers its currently preferred IP points of attachment for defined policies; a method for suitable authorised systems to retrieve the current IP address for a particular aircraft; and managing datalink connectivity.
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