Mobile communication system
AssigneeNtt Docomo, Inc.
InventorsTooru Uchino, Hideaki Takahashi, Kazuki Takeda, Yuichi Kakishima
Life of this patent
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Abstract
Transmission power control on a mobile station (UE) is appropriately performed when “Inter-eNB CA” is performed by using cells under control of plural radio base stations (eNB). In a mobile communication system according to the present invention, a specific radio base station (eNB#1) among plural radio base stations (eNB#1, eNB#2) performs scheduling control and transmission power control on a mobile station (UE) in all the cells (#1, #2A to #2C) under the control of the plural radio base stations (eNB#1, eNB#2).
Claims8
A mobile communication system in which a mobile station is configured to perform carrier aggregation by using cells under control of plural radio base stations, wherein
- a specific radio base station among the plural radio base stations performs scheduling control and transmission power control on the mobile station in all the cells under the control of the plural radio base stations.
A mobile communication system in which a mobile station is configured to perform carrier aggregation by using cells under control of plural radio base stations, wherein
- each of the plural radio base stations performs scheduling control and transmission power control on the mobile station in a cell under the control thereof,
- the plural radio base stations exchange scheduling information on the mobile station thereamong, and
- only one of the radio base stations performs the scheduling control on the mobile station at a same timing.
A mobile communication system in which a mobile station is configured to perform carrier aggregation by using cells under control of plural radio base stations, wherein
- the mobile station reports, when a predetermined variable changes more than a predetermined threshold value, a change amount of the predetermined variable to at least one of the plural radio base stations,
- the predetermined variable includes
- number of resource blocks assigned to the mobile station in each of the cells under the control of the plural radio base stations,
- a propagation loss in each of the cells under the control of the plural radio base stations,
- an electric-power offset value determined based on a modulation method and a coding rate used in each of the cells under the control of the plural radio base stations, and
- a correction value for closed loop transmission power control used in each of the cells under the control of the plural radio base stations.
A mobile communication system in which a mobile station is configured to perform carrier aggregation by using cells under the control of plural radio base stations, wherein
- a maximum transmission power of the mobile station in each of the cells under the control of the plural radio base stations is reduced.
Dependencies are inferred from the claim text.