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US 11,057,768 B2Granted
Radio base station, mobile communication system, handover control method, and program
AssigneeNEC Corporation
InventorTsuneyuki Kikuchi
Life of this patent
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AssigneeNEC Corporation
InventorTsuneyuki Kikuchi
Estimating the term…
A radio base station that performs radio communication with a mobile station in a cell and that includes: resource management unit that secures resources necessary for radio communication with the mobile station; and communication control unit that, in accordance with a reconnection request from the mobile station, uses the resources secured by the resource management unit to perform reconnection control for establishing radio communication with the mobile station. If a reconnection request is received from the mobile station that takes another radio base station as the connection source in a state in which resources have not been secured by resource management unit, communication control unit interrupts the reconnection control, executes handover with the other base station in order to switch the connection destination of the mobile station from the other base station to its own base station, causes resource management unit to secure resources, and then resumes the reconnection control.
A source base station comprising:
A method by a source base station comprising:
A method by a mobile terminal comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Authentication: pre-authentication
Transmission or use of information for re-establishing the radio link: of resource information of target access point
Transmission or use of information for re-establishing the radio link: in case of hand-off failure or rejection
Reselection being triggered by specific parameters: according to timing information
About 8 years 2 months of term left · ends 17 Dec 2034 (estimated)
The present invention relates to the technology of handover of a mobile communication system.
As disclosed in 3GPP TS 36.300, in an LTE (Long Term Evolution) mobile communication system, in order to realize mobility of a user while maintaining the communication quality of a mobile station (UE), the UE can be handed over from the original radio base station to a radio base station having a stronger received signal level.
When handover fails for some reason or when a problem occurs in the radio link during communication, communication can be recovered by carrying out reconnection control of the RRC (Radio Resource Control) connection between the UE and the radio base station.
FIG. 1 is a block diagram showing the configuration of the mobile communication system that is an exemplary embodiment of the present invention.
FIG. 2 is a block diagram showing the configuration of the principal parts of a mobile station of the mobile communication system shown in FIG. 1.
FIG. 3 is a block diagram showing the configuration of the principal parts of the radio base station of the mobile communication system shown in FIG. 3.
10 mobile station 11, 21 control unit 12, 22 handover control unit 13, 23 communication unit 14, 24 memory 20 radio base station 30 core network 221 resource management unit 222 communication control unit 231 radio communication unit 232 S1 interface unit 233 X2 interface unit
An exemplary embodiment of the present invention is next described with reference to the accompanying drawings.
FIG. 1 is a block diagram showing the configuration of the mobile communication system that is an exemplary embodiment of the present invention.