Mobile communication method, radio base station and mobile station
AssigneeNtt Docomo, Inc.
InventorsHideaki Takahashi, Satoshi Nagata
Life of this patent
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Abstract
An objective of the present invention is to perform an appropriate demodulation process on a received signal in ABS. A mobile communication method according to the present invention includes the steps of: notifying a mobile station UE of an ABS “P_B” initial value by a radio base station eNB using an SIB2; notifying the mobile station UE of an ABS “P_A” initial value by the radio base station eNB using “RRCConnectionReconfiguration”; and performing a demodulation process on a downlink data signal in ABS by the mobile station UE on the basis of the ABS “P_B” initial value and the ABS “P_A” initial value.
Claims9
A mobile communication method comprising the steps of:
- notifying a mobile station of an initial value of a first offset value for ABS by a radio base station using notification;
- notifying the mobile station of an initial value of a second offset value for ABS by the radio base station through RRC signaling;
- and
- performing a demodulation process on a downlink data signal in ABS by the mobile station based on the initial value of the first offset value and the initial value of the second offset value, wherein
- the first offset value for ABS is a value representing a ratio between transmission power on a physical downlink shared channel in a period in which a cell-specific reference signal is transmitted in ABS, and transmission power on the physical downlink shared channel in a period in which no cell-specific reference signal is transmitted in ABS, and
- the second offset value for ABS is a value representing a ratio between the transmission power on the physical downlink shared channel in the period in which no cell-specific reference signal is transmitted in ABS and transmission power of the cell-specific reference signal.
A radio base station comprising:
- a transmission unit configured to notify a mobile station of an initial value of a first offset value for ABS by using notification, and to notify the mobile station of an initial value of a second offset value for ABS through RRC signaling, wherein
- the first offset value for ABS is a value representing a ratio between transmission power on a physical downlink shared channel in a period in which a cell-specific reference signal is transmitted in ABS and transmission power on the physical downlink shared channel in a period in which no cell-specific reference signal is transmitted in ABS, and
- the second offset value for ABS is a value representing a ratio between the transmission power on the physical downlink shared channel in the period in which no cell-specific reference signal is transmitted in ABS and transmission power of the cell-specific reference signal.
A mobile station comprising:
- an offset value acquisition unit configured to acquire an initial value of a first offset value for ABS by using notification, and to acquire an initial value of a second offset value for ABS through RRC signaling from a radio base station;
- and
- a downlink data signal receiving unit configured to perform a demodulation process on a downlink data signal in ABS based on the initial value of the first offset value for ABS and the initial value of the second offset value for ABS, wherein
- the first offset value for ABS is a value representing a ratio between transmission power on a physical downlink shared channel in a period in which a cell-specific reference signal is transmitted in ABS and transmission power on the physical downlink shared channel in a period in which no cell-specific reference signal is transmitted in ABS, and
- the second offset value for ABS is a value representing a ratio between the transmission power on the physical downlink shared channel in the period in which no cell-specific reference signal is transmitted in ABS and transmission power of the cell-specific reference signal.
Dependencies are inferred from the claim text.