US Patent 9554285 Establishing wireless communication between a train and base stations

Methods and systems are provided for communication between moving objects (e.g., a train) and land-based systems (e.g., base stations of mobile wireless networks). For example, wireless communication may be established between a train and one or more base stations arranged along a track travelled by the train. In some instances, multiple-input and multiple-output arrays may be configured, comprising antennas of one or more communication relays arranged on the train, and the one or more base stations. Communications may be performed concurrently via multiple communication channels, such as channels of a MIMO arrays, using cooperative communication schemes for example. Channel state information (CSI) may be stored, remotely or locally, such as in a data storage system, and for communicating via the communication channel(s), channel state information may be determined, such as depending on information defining the current location of communication relays used in establishing the channels.