US 2013/0210341 A1Published application

Base station and method

AssigneeNtt Docomo, Inc.

InventorsKohei Kiyoshima, Hiroyuki Ishii, Yoshitaka Hiramoto, Naoki Nakaminami

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Abstract

A base station includes a determination unit that determines whether user equipment performs radio communication through a booster, based on delay time of a signal transmitted to and received from the user equipment; a target SIR setting unit that sets a target SIR to be compared to a received SIR for performing transmission power control based on the received SIR of an uplink signal from the user equipment; a transmission power control signal generating unit that generates, based on the target SIR and the received SIR, a transmission power control signal to be set for controlling transmission power of the user equipment; and a transmitter that transmits the transmission power control signal to the user equipment. When determination is made that the radio communication is performed through the booster, the target SIR is set to be less than or equal to a predetermined upper limit value.

Claims11

Dependent claims

A base station that performs radio communication with user equipment, the base station comprising;

a first determination unit that determines whether the user equipment is performing the radio communication through a booster, based on a delay time period of a signal transmitted to and received from the user equipment;
a target SIR setting unit that sets a target SIR, wherein the target SIR is to be compared to a received SIR for performing transmission power control based on the received SIR of an uplink signal from the user equipment;
a transmission power control signal generating unit that generates a transmission power control signal based on the target SIR and the received SIR, wherein the target SIR is set by the target SIR setting step, and the transmission power control signal is to be set for controlling transmission power of the user equipment;
and
a transmitter that transmits the transmission power control signal to the user equipment, wherein the transmission power control signal is generated by the transmission power control signal generating unit,
wherein, when the first determination unit determines that the user equipment is performing the radio communication through the booster, the target SIR setting unit sets the target SIR to be less than or equal to a predetermined upper limit value.

3 more elements

A method of a base station that performs radio communication with user equipment, the method comprising:

a first determination step of determining whether the user equipment is performing the radio communication through a booster, based on a delay time period of a signal transmitted to and received from the user equipment;
a target SIR setting step of setting a target SIR, wherein the target SIR is to be compared to a received SIR for performing transmission power control based on the received SIR of an uplink signal from the user equipment;
a transmission power control signal generating step of generating a transmission power control signal based on the target SIR and the received SIR, wherein the target SIR is set by the target SIR setting step, and the transmission power control signal is to be set for controlling transmission power of the user equipment;
and
a transmission step of transmitting the transmission power control signal to the user equipment, wherein the transmission power control signal is generated by the transmission power control signal generating unit,
wherein, when the first determination step determines that the user equipment is performing the radio communication through the booster, the target SIR setting step sets the target SIR to be less than or equal to a predetermined upper limit value.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/878,350Filed 30 Sep 2011
Priority: JP 2010-2288728 Oct 2010
Published: 15 Aug 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04W 52/241
Using SIR [Signal to Interference Ratio] or other wireless path parameters: taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo
H04W 52/248
Using SIR [Signal to Interference Ratio] or other wireless path parameters: where transmission power control commands are generated based on a…
H04W 52/46
TPC being performed in particular situations: in multi-hop networks, e.g. wireless relay networks
H04W 16/26
Cell structures: cell enhancers or enhancement, e.g. for tunnels, building shadow