Mobile communication system, radio base station, radio mobile station and mobile communication method
First Claim
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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Accused Products
Abstract
A mobile communication system that includes a first communication system, which features a user terminal that is present in a moving object, a first radio base station that forms a cell in the moving object, and a first core network that is connected with an external network, and a second communication system, which features a radio mobile station that is provided in the moving object, a second radio base station that forms a cell on the path of the movement of the moving object, and a second core network that is connected with the second radio base station. The first radio base station and the radio mobile station are connected via a user-plane interface and a control-plane interface between the radio base stations and the core networks.
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Citations
13 Claims
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1. A mobile communication system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A first radio base station that forms a cell in a moving object, the first radio base station comprising:
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a transceiver that; transmits and receives user data and control signals with a user terminal that is present in the moving object via a radio interface; and transmits and receives lower layer data of the user data with a Group Mobility (GM) mobile station provided in the moving object via a first user-plane interface and transmits and receives lower layer data of the control signals via a first control-plane interface; and a processor that performs data processing between the first radio interface and the first user-plane interface and the first control-plane interface, wherein the lower layer data of the user data and the lower layer data of the control signals are transmitted and received on a second user plane that is provided between the GM mobile station and a second core network connected to a first core network and the second radio base station connected to the GM mobile station via a second radio interface.
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12. A Group Mobility (GM) mobile station that is provided in a moving object, the GM mobile station comprising:
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a processor with a memory; and a transceiver coupled to the processor, wherein the processor causes the transceiver to; transmit and receive, with a first radio base station, lower layer data of user data that is transmitted and received between the first radio base station that forms a cell in a moving object, and a user terminal that is present in the moving object, via a first user-plane interface between the radio base station and a core network, and transmits and receives lower layer data of control signals that are transmitted and received between the first radio base station and the user terminal via a first control-plane interface between the radio base station and the core network; and transmit and receive user data that is formed with the lower layer data of the user data and the control signals, with a second radio base station connected to the GM mobile station via a second radio interface, via a second radio interface, and wherein lower layer data of the user data and lower layer data of the control signals are transmitted and received on a second user plane that is provided between the GM mobile station and a second core network connected to the second radio base station and the first core network.
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13. A mobile communication method in 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 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, the mobile communication method comprising:
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transmitting and receiving, by the user terminal and the first radio base station, user data and control signals via the first radio interface; and transmitting and receiving, by the first radio base station and the GM mobile station, lower layer data of the user data via a first user-plane interface, and transmitting and receiving, by the first radio base station and the GM mobile station, lower layer data of the control signals via a control-plane interface wherein lower layer data of the user data and lower layer data of the control signals 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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Specification