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US 8,045,516 B2Granted
Base station, mobile communication system, and mobile communication control method
AssigneeNtt Docomo, Inc.
InventorsTomoki Sao, Shinya Tanaka, Hiroyuki Ishii, Takehiro Nakamura
Life of this patent
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Abstract
A target base station transmits a traffic assignment signal a plurality of times to a control station for notifying a traffic amount of downlink data that can be processed by the target base station, after a notified cell change timing in which the mobile station changes a communicating base station.
Claims4
A base station comprising:
- a control signal communication unit configured to receive, from a control station, a notification of a change timing at which a mobile station changes a communicating base station;
- and
- a control signal generating unit configured to generate a traffic assignment signal for notifying the control station of a traffic amount of downlink data which can be processed by the base station, wherein
- the control signal communication unit is configured to transmit the traffic assignment signal a plurality of times to the control station after the notified change timing, shorten a transmission interval of the traffic assignment signal in an initial stage of the transmission, and lengthen the transmission interval to more than the transmission interval in the initial stage in accordance with time passage.
1 more element
A mobile communication system comprising:
- a control station configured to control a base station;
- and
- the base station configured to:
- receive, from the control station, a notification of a change timing at which a mobile station changes a communicating base station;
- generate a traffic assignment signal for notifying the control station of a traffic amount of downlink data which can be processed by the base station;
- and
- transmit the traffic assignment signal a plurality of times to the control station after the notified change timing, wherein
- the base station is configured to shorten a transmission interval of the traffic assignment signal in an initial stage of the transmission and lengthen the transmission interval to more than the transmission interval in the initial stage in accordance with time passage.
5 more elements
A mobile communication control method comprising:
- receiving, at a base station from a control station, a notification of a change timing at which a mobile station changes a communicating base station;
- generating, at the base station, a traffic assignment signal for notifying the control station of a traffic amount of downlink data which can be processed by the base station;
- and
- transmitting, at the base station, the traffic assignment signal a plurality of times to a control station after the notified change timing, wherein the transmitting includes shortening a transmission interval of the traffic assignment signal in an initial stage of the transmission and lengthening the transmission interval to more than the transmission interval in the initial stage in accordance with time passage.
1 more element
Dependencies are inferred from the claim text.