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US 12,587,253 B2Granted
Base station and method for a cooperative scheme in signal transmission
AssigneeNtt Docomo, Inc.
InventorsTatsuki Okuyama, Satoshi Suyama, Takahiro Asai
Life of this patent
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Abstract
This base station has: a control unit that determines, on the basis of information shown by the movement of a terminal, a linking method for signal transmission by a plurality of wireless stations, and the number of streams of each wireless station; and a transmission unit that links the plurality of wireless stations according to the determined linking method, and transmits a signal to a terminal using the streams.
Claims12
A base station, comprising:
- a control section that determines a cooperative scheme in signal transmission by a plurality of radio stations and a number of streams in each of the plurality of radio stations based on information that appears due to a movement of a terminal;
- and
- a transmission section that coordinates the plurality of radio stations in accordance with the cooperative scheme, and transmits a signal to the terminal using the stream or streams,
- wherein determining the cooperative scheme comprises selecting the cooperative scheme among a coordinated transmission, a distributed transmission and a communication switching between the plurality of radio stations, and
- wherein one of the cooperative scheme or the number of streams is determined based on a relative moving speed of the terminal inferred from the information.
2 more elements
A communication method, comprising:
- determining, by a base station, a cooperative scheme in signal transmission by a plurality of radio stations and a number of streams in each of the plurality of radio stations based on information that appears due to a movement of a terminal;
- and
- coordinating, by the base station, the plurality of radio stations in accordance with the cooperative scheme, and transmitting a signal to the terminal using the stream or streams,
- wherein determining the cooperative scheme comprises selecting the cooperative scheme among a coordinated transmission, a distributed transmission and a communication switching between the plurality of radio stations, and
- wherein one of the cooperative scheme or the number of streams is determined based on a relative moving speed of the terminal inferred from the information.
2 more elements
Dependencies are inferred from the claim text.