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Mobile communication system, radio base station, radio mobile station and mobile communication method

  • US 10,003,978 B2
  • Filed: 12/10/2014
  • Issued: 06/19/2018
  • Est. Priority Date: 12/10/2013
  • Status: Expired due to Fees
First Claim
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1. A mobile communication system comprising:

  • a first communication system, which includes;

    a user terminal that is present in a moving object;

    a first radio base station connected to the user terminal via a first radio interface; and

    a first core network that is connected to an external network; and

    a second communication system, which includes;

    a radio Group Mobility (GM) mobile station that is provided in the moving object;

    a second radio base station connected to the GM mobile station via a second radio interface; and

    a second core network that is connected to the second radio base station and the first core network,wherein lower layer data of user data that is transmitted and received on a first user plane between the user terminal and the first core network, and lower layer data of control signals that are transmitted and received on a control plane between the user terminal and the first core network, are transmitted and received on a second user plane that is provided between the GM mobile station and the second core network.

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