Mobile communication system, radio base station controller, and relocation method
First Claim
1. A mobile communication system comprising:
- a radio terminal;
a radio base station;
a serving base station controller that transmits a control signal to the radio terminal by using a Signaling Radio Bearer; and
a drift base station controller that relays data communication between the serving base station controller and the radio terminal;
wherein, during a relocation procedure, a first ID for identifying the Signaling Radio Bearer and a second ID for identifying E-DCH MAC-d flow are reported from the serving base station controller to the drift base station controller, andwherein the first ID is mapped with the second ID.
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Abstract
Radio base stations connect by radio lines with radio terminals in cells that make up each radio base station and relay data communication realized by the radio terminals on bearers on radio lines. Base station controllers record correspondence information of the data flow of data communication with the radio terminals and the bearers on the radio lines and, by referring to the correspondence information, effects termination of data communication with the radio terminals. When, in a state in which a drift base station controller relays and transfers data communication between radio base stations to which the radio terminals are connected and a serving base station controller, the serving base station controller is transferred to the drift base station controller, the plurality of base station controllers then report to the drift base station controller the correspondence information from the serving base station controller.
10 Citations
26 Claims
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1. A mobile communication system comprising:
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a radio terminal; a radio base station; a serving base station controller that transmits a control signal to the radio terminal by using a Signaling Radio Bearer; and a drift base station controller that relays data communication between the serving base station controller and the radio terminal; wherein, during a relocation procedure, a first ID for identifying the Signaling Radio Bearer and a second ID for identifying E-DCH MAC-d flow are reported from the serving base station controller to the drift base station controller, and wherein the first ID is mapped with the second ID. - View Dependent Claims (2, 3, 4)
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5. A drift base station controller of a mobile communication system in which a serving base station controller transmits a control signal to a radio terminal by using a Signaling Radio Bearer, the drift base station controller comprising:
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relay means for relaying data communication between the serving base station controller and radio terminal; and reception means for, during a relocation procedure, receiving from the serving base station controller a first ID for identifying the Signaling Radio Bearer and a second ID for identifying E-DCH MAC-d flow, wherein the first ID is mapped with the second ID. - View Dependent Claims (6, 7)
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8. A serving base station controller for carrying out data communication with a radio terminal via a drift base station controller, the serving base station controller comprising:
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first means for transmitting a control signal to the radio terminal by using an Signaling Radio Bearer; and second means for, during a relocation procedure, transmitting to the drift base station controller a first ID for identifying the Signaling Radio Bearer and a second ID for identifying E-DCH MAC-d flow, wherein the first ID is mapped with the second ID. - View Dependent Claims (9, 10, 11)
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12. A radio terminal comprising:
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means for receiving a control signal that is transmitted from a serving base station controller by using a Signaling Radio Bearer; and communication means for performing data communication with the serving base station controller via a drift base station controller; wherein the radio terminal performs data communication with the drift base station controller after a first ID for identifying the Signaling Radio Bearer and a second ID for identifying E-DCH MAC-d flow is reported from the serving base station controller to the drift base station controller during a relocation procedure, wherein the first ID is mapped with the second ID. - View Dependent Claims (13, 14, 15)
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16. A core network that is connected to a serving base station controller that transmits a control signal to a radio terminal by using a Signaling Radio Bearer and is connected to a drift base station controller that relays data communication between the serving base station controller and the radio terminal;
- the core network comprising;
reception means for, during a relocation procedure, receiving from the serving base station controller a first ID for identifying the Signaling Radio Bearer and a second ID for identifying E-DCH MAC-d flow; and transmission means for transmitting to the drift base station controller the first ID and the second ID, wherein the first ID is mapped with the second ID. - View Dependent Claims (17, 18)
- the core network comprising;
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19. A control method of a radio terminal in a mobile communication system that includes a serving base station controller and a drift base station controller;
- wherein;
receiving a control signal from the serving base station controller by using a Signaling Radio Bearer; performing data communication with the serving base station controller via the drift base station controller; and performing, during a relocation procedure, data communication with the drift base station controller without performing data communication with the serving base station controller after a first ID for identifying the Signaling Radio Bearer and a second ID for identifying E-DCH MAC-d flow are reported from the serving base station controller to the drift base station controller, wherein the first ID is mapped with the second ID. - View Dependent Claims (20, 21)
- wherein;
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22. A relocation method wherein:
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a serving base station controller transmits a control signal to a radio terminal by using a Signaling Radio Bearer; a serving base station controller performs data communication with radio terminal via the drift base station controller; and during a relocation procedure, the serving base station controller transmits to the drift base station controller a first ID for identifying the Signaling Radio Bearer and a second ID for identifying E-DCH MAC-d flow, wherein the first ID is mapped with the second ID. - View Dependent Claims (23, 24, 25, 26)
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Specification