Method of supporting power control on supplemental channel in base station
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 slow power control from the BSC and transmitting the FPC mode information to an MS (Mobile Station);
extracting an EIB (Erasure 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;
determining the status of the EIB; and
transmitting a reverse SCH (Supplemental Channel) message including the EIB status information 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 Transitive System) of a mobile communication system. The BTS receives forward power control (FPC) mode information indicating a slow power control from the BSC and transmits the FPC mode information to an MS (Mobile Station). The BATS extracts an EIB (Erasure 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, determines the status of the EIB, and transmits a reverse SCH (Supplemental Channel) message including the EIB status information to the BSC.
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Citations
12 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 slow power control from the BSC and transmitting the FPC mode information to an MS (Mobile Station);
extracting an EIB (Erasure 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;
determining the status of the EIB; and
transmitting a reverse SCH (Supplemental Channel) message including the EIB status information to the BSC. - View Dependent Claims (2, 3)
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4. A method of transmitting a signal 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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checking a forward power control mode (FPC_MODE);
receiving an EIB (Erasure Indicator Bit) on a reverse pilot channel from an MS (Mobile Station) when the forward power control mode indicates a slow power control; and
transmitting a reverse SCH (Supplemental Channel) message including the received EIB to the BSC. - View Dependent Claims (5)
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6. A method of transmitting power control information to a BTS (Base Station Transceiver System) in a BSC (Base Station Controller) of a mobile communication system, comprising the steps of:
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receiving a reverse SCH (Supplemental Channel) frame and a reverse SCH message including power control information from the BTS;
extracting an EIB (Erasure Indicator Bit) that is a power control command in a frame period from the reverse SCH message;
determining a forward power control threshold based on the EIB;
extracting information about the quality of a reverse SCH frame from the reverse SCH message; and
changing a reverse power control threshold in a forward SCH(Supnlemental Channel) message directed to the BTS based on the extracted quality information when reverse power control information should be adjusted; and
transmitting a forward SCH message including the threshold to the BTS.
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7. A method of controlling the power of forward channels transmitted from a BTS (Base Station Transceiver System) to an MS (Mobile Station) in a mobile communication system, comprising the steps of:
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determining power control rates for a forward FCH (Fundamental Channel)/DCCH (Dedicated Control Channel) and a forward SCH (Supplemental Channel);
performing a fast power control on the FCH(Fundamental Channel)/DCCH at the determined power control rate according to a plurality of power control commands received for one frame period from the MS; and
performing a slow power control on the SCH at the determined power control rate according to a power control command received for one frame period from the MS. - View Dependent Claims (8, 9)
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10. A method of controlling the power of forward channels transmitted from a BTS (Base Station Transceiver System) to an MS (Mobile Station) in a mobile communication system, comprising the steps of:
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determining power control rates for a forward FCH(Fundamental Channel)/DCCH (Dedicated Control Channel) and a forward SCH (Supplemental Channel);
performing a slow power control on the FCH/DCCH at the determined power control rate according to a power control command received for one frame period from the MS; and
performing a fast power control on the SCH at the determined power control rate according to a plurality of power control commands received for one frame period from the MS. - View Dependent Claims (11)
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12. 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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detecting a discontinuous transmission (DTX) period by measuring the energy of a supplemental channel (SCH) frame received from a mobile station (MS);
checking a forward power control mode (FPC_MODE) if the DTX period is detected;
extracting a power control command from a reverse pilot channel according to the forward power control mode;
performing a fast power control on a forward SCH according to a power control bit (PCB) if the power control command is the PCB; and
transmitting a reverse SCH message including an erasure indicator bit (EIB) status value to the BSC if the power control command is an EIB.
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Specification