Mobile communication system
First Claim
1. A mobile communication system, comprising:
- a plurality of base stations; and
a user equipment which receives data from one or more of the plurality of base stations,wherein the plurality of base stations are configured to operate in a coordinated communication mode in which radio communication is performed between the user equipment and the plurality of base stations in a coordinated manner such that the user equipment receives a same data over a same downlink shared channel from the plurality of base stations and an uncoordinated communication mode in which radio communication is performed between the user equipment and one of the base stations without coordinating with another base station,wherein radio communication is performed by selectively using any of said coordinated communication mode and said uncoordinated communication mode,wherein the coordinated communication mode is used when a type of logical channel mapped to the downlink shared channel for transmitting the data to the user is a dedicated logical channel for the user equipment, and the uncoordinated communication mode is used when a type of logical channel mapped to the downlink shared channel for transmitting the data to the user is a logical channel for broadcast to a plurality of user equipment.
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Abstract
The present invention relates to a mobile communication system having a coordinated communication mode in which radio communication is performed between a user equipment and a plurality of base stations in a coordinated manner and an uncoordinated communication mode in which radio communication is performed between a user equipment and a base station without coordinating with another base station, in which radio communication is performed by selectively using any of the coordinated communication mode and the uncoordinated communication mode. The coordinated communication in which radio communication is performed between a user equipment and a plurality of base stations in a coordinated manner and the uncoordinated communication in which radio communication is performed between a user equipment and a base station without coordinating with another base station are selectively used in an appropriate manner, with the result that a mobile communication system capable of exerting its performance in accordance with a situation can be provided.
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Citations
11 Claims
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1. A mobile communication system, comprising:
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a plurality of base stations; and a user equipment which receives data from one or more of the plurality of base stations, wherein the plurality of base stations are configured to operate in a coordinated communication mode in which radio communication is performed between the user equipment and the plurality of base stations in a coordinated manner such that the user equipment receives a same data over a same downlink shared channel from the plurality of base stations and an uncoordinated communication mode in which radio communication is performed between the user equipment and one of the base stations without coordinating with another base station, wherein radio communication is performed by selectively using any of said coordinated communication mode and said uncoordinated communication mode, wherein the coordinated communication mode is used when a type of logical channel mapped to the downlink shared channel for transmitting the data to the user is a dedicated logical channel for the user equipment, and the uncoordinated communication mode is used when a type of logical channel mapped to the downlink shared channel for transmitting the data to the user is a logical channel for broadcast to a plurality of user equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A mobile communication method, implemented by a mobile communication system including a plurality of base stations and a user equipment which receives data from one or more of the plurality of base stations, the method comprising:
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selectively operating the plurality of base stations between a coordinated communication mode in which radio communication is performed between the user equipment and the plurality of base stations in a coordinated manner such that the user equipment receives a same data over a same downlink shared channel from the plurality of base stations and an uncoordinated communication mode in which radio communication is performed between the user equipment and one of the base stations without coordinating with another base station, wherein the coordinated communication mode is used when a type of logical channel mapped to the downlink shared channel for transmitting the data to the user is a dedicated logical channel for the user equipment, and the uncoordinated communication mode is used when a type of logical channel mapped to the downlink shared channel for transmitting the data to the user is a logical channel for broadcast to a plurality of user equipment.
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Specification