ESTABLISHING SIMULTANEOUS RADIO CONNECTION BETWEEN A USER EQUIPMENT AND TWO ENODEBS
First Claim
1. A first radio station configured to operate a first cell, the first radio station comprising:
- an interface connected with a second radio station operating a second cell; and
at least one hardware processor configured to;
output a first request to the second radio station via the interface, wherein the first request is configured to request the second radio station to prepare radio resources for aggregating the first cell with the second cell by a radio terminal, while an established first radio connection between the first radio station and the radio terminal is maintained on the first cell;
receive, from the second radio station via the interface, radio resource configuration information of the second cell; and
transmit, to the radio terminal, radio connection configuration information message including at least the radio resource configuration information of the second cell while the established first radio connection between the radio terminal and the first radio station is maintained.
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Accused Products
Abstract
A first radio station (1) requests or instructs a second radio station (2) to prepare for communication with a radio terminal (3) on a second cell (20) while a first radio connection on a first cell (10) with the radio terminal (3) is established. Further, the first radio station (1) instructs the radio terminal (3) or the second radio station (2) to establish a second radio connection on the second cell (20) with the radio terminal (3) while maintaining the radio connection on the first cell (10) with the radio terminal (3). It is thus for example possible to enable a single radio terminal to establish radio connections with cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.
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Citations
25 Claims
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1. A first radio station configured to operate a first cell, the first radio station comprising:
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an interface connected with a second radio station operating a second cell; and at least one hardware processor configured to; output a first request to the second radio station via the interface, wherein the first request is configured to request the second radio station to prepare radio resources for aggregating the first cell with the second cell by a radio terminal, while an established first radio connection between the first radio station and the radio terminal is maintained on the first cell; receive, from the second radio station via the interface, radio resource configuration information of the second cell; and transmit, to the radio terminal, radio connection configuration information message including at least the radio resource configuration information of the second cell while the established first radio connection between the radio terminal and the first radio station is maintained. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A second radio station configured to operate a second cell, the second radio station comprising:
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an interface connected with a first radio station operating a first cell; and at least one hardware processor configured to; receive a first request from the first radio station via the interface, wherein the first request is configured to request the second radio station to prepare radio resources for aggregating the first cell with the second cell by a radio terminal, while an established first radio connection between the first radio station and the radio terminal is maintained on the first cell; and output, to the first radio station via the interface, radio resource configuration information of the second cell in response to the first request, wherein the first radio station is configured to transmit, to the radio terminal, radio connection configuration information including at least the radio resource configuration information of the second cell while the established first radio connection between the radio terminal and the first radio station is maintained. - View Dependent Claims (8, 9, 10, 11, 12)
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19. A radio terminal comprising:
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a receiver; and at least one hardware processor configured to; establish a first radio connection between a radio station and the radio terminal on a first cell operated by the first radio station; control the receiver to receive radio connection configuration information from the first radio station, wherein the radio connection configuration information includes radio resource configuration information of a second cell operated by a second radio station; add the second cell as a secondary cell based on the radio resource configuration information of the second cell while the established first radio connection is maintained on the first cell; and perform aggregating the first cell as a primary cell with the second cell as the secondary cell. - View Dependent Claims (20, 21, 22)
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23. A method in a first radio station that operates a first cell, the method comprising:
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outputting, via an interface, a first request to a second radio station that operates a second cell, wherein the first request is configured to request the second radio station to prepare radio resources for aggregating the first cell with the second cell by a radio terminal, while an established first radio connection between the first radio station and the radio terminal is maintained on the first cell; receiving, from the second radio station via the interface, radio resource configuration information of the second cell; and transmitting, to the radio terminal, radio connection configuration information message including at least the radio resource configuration information of the second cell while the established first radio connection between the radio terminal and the first radio station is maintained.
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24. A method in a second radio station that operates a second cell, the method comprising:
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receiving, via the interface, a first request from a first radio station that operates a first cell, wherein the first request is configured to request the second radio station to prepare radio resources for aggregating the first cell with the second cell by a radio terminal, while an established first radio connection between the first radio station and the radio terminal is maintained on the first cell; and outputting, to the first radio station via the interface, radio resource configuration information of the second cell in response to the first request, wherein the first radio station is configured to transmit, to the radio terminal, radio connection configuration information including at least the radio resource configuration information of the second cell while the established first radio connection between the radio terminal and the first radio station is maintained.
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25. A method in a radio terminal, the method comprising:
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establishing a first radio connection between a radio station and the radio terminal on a first cell operated by the first radio station; controlling a receiver included in the radio terminal to receive radio connection configuration information from the first radio station, wherein the radio connection configuration information includes radio resource configuration information of a second cell operated by a second radio station; adding the second cell as a secondary cell based on the radio resource configuration information of the second cell while the established first radio connection is maintained on the first cell; and performing aggregating the first cell as a primary cell with the second cell as the secondary cell.
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Specification