Reverse closed loop power control in control hold state for CDMA communication system
First Claim
Patent Images
1. A base station device comprising:
- a controller for changing a reference value for reverse closed loop power control in a control hold state, said reference value initially equal to
θ
1=(Ec/No)required or fractions thereof where θ
1 is the reference value, and (Ec/No)required is the required signal to noise ratio; and
a forward dedicated control channel transmitter for transmitting a power control bit for controlling transmission power of a reverse link according to the changed reference value.
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Abstract
A base station device for a CDMA communication system includes a controller for changing a reference value for reverse closed loop power control in a control hold state, and a forward dedicated control channel transmitter for transmitting a power control bit for controlling transmission power of a reverse link according to the changed reference value.
39 Citations
14 Claims
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1. A base station device comprising:
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a controller for changing a reference value for reverse closed loop power control in a control hold state, said reference value initially equal to
θ
1=(Ec/No)requiredor fractions thereof where θ
1 is the reference value, and (Ec/No)required is the required signal to noise ratio; anda forward dedicated control channel transmitter for transmitting a power control bit for controlling transmission power of a reverse link according to the changed reference value. - View Dependent Claims (2)
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3. A base station device comprising:
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a controller for changing a reference value for reverse closed loop power control in a control hold state, said reference value initially equal to
θ
1=(Ec/No)requiredor fractions thereof where θ
1 is the reference value, and (Ec/No)required is the required signal to noise ratio, determining a transmission period of a power control bit according to the changed reference value for reverse closed loop power control, and controlling transmission power of a reverse link according to the determined generation period; anda reverse dedicated control channel transmitter for repeatedly transmitting the generated power control bit until a next generation period.
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4. A transmission method for a base station, comprising the steps of:
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changing a reference value for reverse closed loop power control in a control hold state, said reference value initially equal to
θ
1(Ec/No)requiredor fractions thereof where θ
1 is the reference value, and (Ec/No)required is the required signal to noise ratio; andtransmitting a power control bit for controlling transmission power of a reverse link according to the changed reference value. - View Dependent Claims (5)
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6. A communication method for a mobile communication system, comprising the steps of:
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changing, at a base station, a reference value for reverse closed loop power control in a control hold state, said reference value initially equal to
θ
1=(Ec/No)requiredor fractions thereof where θ
1 is the reference value, and (Ec/No)required is the required signal to noise ratio, and controlling transmission power of a reverse link according to the changed reference value for performing closed loop power control; andcontrolling, at a mobile station, transmission power of a reverse pilot channel according to a power control bit from the base station. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A transmission method for a base station, comprising the steps of:
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changing a reference value for reverse closed loop power control in a control hold state, said reference value initially equal to
θ
1=(Ec/No)requiredor fractions thereof where θ
1 is the reference value, and (Ec/No)required is the required signal to noise ratio, determining a generation period of a power control bit according to the changed reference value for reverse closed loop power control, and controlling transmission power of a reverse link according to the determined generation period; andrepeatedly transmitting the generated power control bit until a next generation period.
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Specification