USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD
First Claim
1. A user terminal that communicates with a plurality of cell groups, each cell group being comprised of one or more cells that use different frequencies, the user terminal comprising:
- a power control section that controls a maximum transmission power value for each cell group, which is given by splitting allowable maximum transmission power of the subject user terminal semi-statically, and controls the maximum transmission power value for a specific cell group to be changed when a predetermined condition is met; and
a transmission section that reports the maximum transmission power value after the change to a radio base station forming the cell group.
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Accused Products
Abstract
The present invention is designed to adequately execute transmission power control in dual connectivity (DC). A user terminal communicates with a plurality of cell groups, each cell group being comprised of one or more cells that use different frequencies, and has a power control section that controls the maximum transmission power value for each cell group, which is given by splitting the allowable maximum transmission power of the subject user terminal semi-statically, and controls the maximum transmission power value of a specific cell group to be changed when a predetermined condition is met, and a transmission section that reports the maximum transmission power value after the change to a radio base station forming the cell group.
16 Citations
10 Claims
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1. A user terminal that communicates with a plurality of cell groups, each cell group being comprised of one or more cells that use different frequencies, the user terminal comprising:
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a power control section that controls a maximum transmission power value for each cell group, which is given by splitting allowable maximum transmission power of the subject user terminal semi-statically, and controls the maximum transmission power value for a specific cell group to be changed when a predetermined condition is met; and a transmission section that reports the maximum transmission power value after the change to a radio base station forming the cell group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A radio base station that forms a cell group comprised of one or more cells to use different frequencies, and that communicates with a user terminal by employing dual connectivity with another radio base station forming a different cell group, the radio base station comprising:
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a transmission section that transmits a maximum transmission power value for each cell group to the user terminal; a control section that controls transmission power within a range of the maximum transmission power value for a subject cell group; and a receiving section that receives a report of change of the maximum transmission power values from the user terminal.
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10. A radio communication method in a user terminal that communicates with a plurality of cell groups, each cell group being comprised of one or more cells that use different frequencies, the radio communication method comprising the steps of:
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controlling a maximum transmission power value for each cell group, which is given by splitting allowable maximum transmission power of the subject user terminal semi-statically; controlling the maximum transmission power value of a specific cell group to be changed when a predetermined condition is met; and reporting the maximum transmission power value after the change to a radio base station forming the cell group.
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Specification