Mobile communication method and radio base station
AssigneeNtt Docomo, Inc.
InventorsAtsushi Harada, Minami Ishii
Life of this patent
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Abstract
In a mobile communication method by which a mobile station (UE) transmits a control signal to a radio base station (eNB) in an uplink by using an uplink dedicated resource, different methods for determining whether or not a synchronization state is established in the uplink, are used depending on whether or not the uplink dedicated resource is set up.
Claims2
A mobile communication method by which a mobile station transmits a control signal to a radio base station in an uplink by using an uplink dedicated resource, comprising:
- determining whether or not a synchronization state is established in the uplink based on whether or not the uplink dedicated resource is set up, wherein
- when the uplink dedicated resource is not set up, and when the radio base station succeeds reception processing on an uplink data signal transmitted by use of a temporarily assigned resource, it is determined that the synchronization state is established in the uplink;
- and
- when the uplink dedicated resource is set up, and when reception timing of the control signal transmitted by use of the uplink dedicated resource is consecutively out of a predetermined range for a predetermined period, it is determined that the synchronization state is not established in the uplink.
A radio base station which receives a control signal transmitted by a mobile station in an uplink by use of an uplink dedicated resource, comprising;
- a synchronization state manager unit configured to determine whether or not a synchronization state is established in the uplink depending on whether or not the uplink dedicated resource is set up, wherein
- when the uplink dedicated resource is not set up, and when the radio base station succeeds reception processing on an uplink data signal transmitted by use of a temporarily assigned resource, the synchronization state manager unit is configured to determine that the synchronization state is established in the uplink;
- and
- when the uplink dedicated resource is set up, and when reception timing of the control signal transmitted by use of the uplink dedicated resource is consecutively out of a predetermined range for a predetermined period, the synchronization state manager unit is configured to determine that a synchronization state is not established in the uplink.
Dependencies are inferred from the claim text.