RADIO BASE STATION APPARATUS AND TRANSMISSION POWER CONTROL METHOD
First Claim
1. A radio base station apparatus of a macro cell in a heterogeneous network including the macro cell and a femto cell, the radio base station apparatus comprising:
- a receiving section that receives registration information as to whether or not a mobile terminal apparatus is a non-member mobile terminal apparatus, which is not a mobile terminal apparatus having registered access to a radio base station apparatus of the femto cell, a received quality measurement result, and cell information;
a determining section that determines whether or not the non-member mobile terminal apparatus has come near the femto cell from the registration information, the received quality measurement result, and the cell information; and
a reporting section that reports neighbor information, which indicates that the non-member mobile terminal apparatus has come near the femto cell, to the radio base station apparatus of the femto cell, by a backhaul link.
1 Assignment
0 Petitions
Accused Products
Abstract
With this transmission power control method, in a radio base station apparatus (10) of a macro cell, registration information as to whether or not a mobile terminal apparatus is a non-member mobile terminal apparatus, which is not a mobile terminal apparatus having registered access to a radio base station apparatus (20) of a femto cell, a received quality measurement result, and cell information, are received, whether or not a non-member mobile terminal apparatus has come near the femto cell is determined from the registration information, the received quality measurement result, and the cell information, and neighbor information, which indicates that a non-member mobile terminal apparatus has come near the femto cell, is reported to the radio base station apparatus (20) of the femto cell, by a backhaul link, and in the radio base station apparatus (20) of the femto cell, transmission power is reduced based on the neighbor information.
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Citations
16 Claims
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1. A radio base station apparatus of a macro cell in a heterogeneous network including the macro cell and a femto cell, the radio base station apparatus comprising:
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a receiving section that receives registration information as to whether or not a mobile terminal apparatus is a non-member mobile terminal apparatus, which is not a mobile terminal apparatus having registered access to a radio base station apparatus of the femto cell, a received quality measurement result, and cell information; a determining section that determines whether or not the non-member mobile terminal apparatus has come near the femto cell from the registration information, the received quality measurement result, and the cell information; and a reporting section that reports neighbor information, which indicates that the non-member mobile terminal apparatus has come near the femto cell, to the radio base station apparatus of the femto cell, by a backhaul link. - View Dependent Claims (2, 3, 14)
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4. A radio base station apparatus of a femto cell in a heterogeneous network including a macro cell and the femto cell, the radio base station apparatus comprising:
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a transmission signal generating section that generates a transmission signal; and a transmission power control section that, when receiving neighbor information which indicates that a non-member mobile terminal apparatus, which is not a mobile terminal apparatus having registered access to the radio base station apparatus of the femto cell, from a radio base station apparatus of the macro cell, reduces transmission power of the transmission signal based on the neighbor information. - View Dependent Claims (5, 6, 7, 15)
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8. A transmission power control method in a heterogeneous network including a macro cell and a femto cell, the transmission power control method comprising the steps of:
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in a radio base station apparatus of the macro cell; receiving registration information as to whether or not a mobile terminal apparatus is a non-member mobile terminal apparatus, which is not a mobile terminal apparatus having registered access to a radio base station apparatus of the femto cell, a received quality measurement result, and cell information; determining whether or not the non-member mobile terminal apparatus has come near the femto cell from the registration information, the received quality measurement result, and the cell information; and reporting neighbor information, which indicates that the non-member mobile terminal apparatus has come near the femto cell, to the radio base station apparatus of the femto cell, by a backhaul link; and in the radio base station apparatus of the femto cell; generating a transmission signal; and reducing transmission power of the transmission signal based on the neighbor information. - View Dependent Claims (9, 10, 11, 12, 13, 16)
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Specification