Method of supporting power control on a DCCH in base station transceiver system and a base station controller
First Claim
1. A method of transmitting power control information to a BSC (Base Station Controller) in a BTS (Base station Transceiver System) of a mobile communication system, comprising the steps of:
- receiving forward power control (FPC) mode information indicating a low power control from the BSC and transmitting the FPC mode information to an MS (Mobile Station);
extracting a QIB (Quality Indicator Bit) that is a power control command from a reverse pilot channel received from the MS according to the FPC mode information;
determining the status of the QIB; and
transmitting information requesting the BSC to change a threshold for a power control on a forward DCCH (Dedicated Control Channel) based on the determined QIB status to the BSC.
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Accused Products
Abstract
There is provided a method of transmitting power control information to a BSC (Base Station Controller) in a BTS (Base station Transceiver System) of a mobile communication system. The BTS receives forward power control (FPC) mode information indicating a low power control from the BSC and transmits the FPC mode information to an MS (Mobile Station). Then, the BTS extracts a QIB (Quality Indicator Bit) that is a power control command in a frame period from a reverse pilot channel received from the MS according to the FPC mode information and determines the status of the QIB. The BTS transmits information requesting the BSC to change a threshold for a power control on a forward DCCH (Dedicated Control Channel) based on the determined QIB status to the BSC.
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Citations
15 Claims
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1. A method of transmitting power control information to a BSC (Base Station Controller) in a BTS (Base station Transceiver System) of a mobile communication system, comprising the steps of:
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receiving forward power control (FPC) mode information indicating a low power control from the BSC and transmitting the FPC mode information to an MS (Mobile Station);
extracting a QIB (Quality Indicator Bit) that is a power control command from a reverse pilot channel received from the MS according to the FPC mode information;
determining the status of the QIB; and
transmitting information requesting the BSC to change a threshold for a power control on a forward DCCH (Dedicated Control Channel) based on the determined QIB status to the BSC. - View Dependent Claims (2)
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3. A method of transmitting power control information to a BSC in a BTS of a mobile communication system, comprising the steps of:
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detecting a DTX (Discontinuous Transmission) period by measuring the energy of a DCCH frame received from an MS;
determining reception status by measuring the energy of a PCB on a reverse pilot channel if the DTX is detected;
determining FQI (Frame Quality Indicator) information according to the determined reception status; and
transmitting the FQI information to the BSC. - View Dependent Claims (4, 5)
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6. A method of transmitting power control information to a BTS in a BSC of a mobile communication system, comprising the steps of:
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checking FQI information in the latest reverse DCCH message received from the BSC if the frame content of the reverse message indicates a null frame;
determining a reverse link power control threshold based on the FQI information; and
transmitting a forward DCCH message with the threshold to the BTS. - View Dependent Claims (7, 8, 9, 10)
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11. A method of transmitting power control information to a BTS in a BSC of a mobile communication system, comprising the steps of:
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receiving a reverse DCCH message from the BTS;
extracting QIB information from the reverse DCCH message;
determining a threshold for a slow forward power control based on the QIB information; and
transmitting a forward DCCH message including the slow forward power control threshold to the BTS.
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12. A method of transmitting power control information to a BSC in a BTS of a mobile communication system, comprising the steps of:
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receiving FPC mode information indicating a slow power control from the BSC and transmitting the FPC mode information to an MS; and
extracting a QIB that is a power control command in a frame period from a reverse pilot channel received from the MS according to the FPC mode information and transmitting the QIB to the BSC. - View Dependent Claims (13)
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14. A method of transmitting power control information to a BSC in a BTS of a mobile communication system, comprising the steps of:
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extracting power control information from a radio frame received from an MS according to a set FPC mode;
performing a fast power control if the extracted power control information is a PCB and resetting a predetermined first field in a reverse DCCH message;
performing a slow power control if the extracted power control information is a QIB and setting the first field to a QIB status value in the reverse DCCH message;
setting a predetermined second field in the reverse DCCH message according to the energy measurement of the extracted power control information; and
transmitting the reverse DCCH message to the BSC. - View Dependent Claims (15)
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Specification