Method and apparatus for transmitting/receiving control channel in wireless communication system
First Claim
1. A method by a base station in a wireless communication system, the method comprising:
- transmitting configuration information on a control channel to a terminal;
determining an aggregation level for use in transmitting the control channel;
mapping a demodulation reference signal (DMRS) to first resource elements in a resource block, the first resource elements corresponding to a first DMRS port;
determining to boost, if second resource elements, corresponding to a second DMRS port, in the resource block are not used for transmitting the DMRS, a transmit power of the first resource elements corresponding to the first DMRS port with a transmit power of the second resource elements corresponding to the second DMRS port; and
transmitting the DMRS and control channel to the terminal using the boosted transmit power,wherein the determining to boost the transmit power comprises determining to boost, if the aggregation level is one of levels 4 and 8, the transmit power of the first resource elements with the transmit power of the second resource elements.
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Abstract
A control channel transmission/reception method and apparatus is provided. The base station of the present invention transmits configuration information on a control channel to a terminal, checks an aggregation level for use in transmitting the control channel, maps Demodulation Reference Signal (DMRS) to resource elements in a resource block depending on the aggregation level, determines, when the resource elements of the DMRS correspond to a first resource element set, whether to map the DMRS to resource elements corresponding to a second resource element set in the resource block, and transmits the DMRS and control channel to the terminal according to the determination result.
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Citations
16 Claims
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1. A method by a base station in a wireless communication system, the method comprising:
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transmitting configuration information on a control channel to a terminal; determining an aggregation level for use in transmitting the control channel; mapping a demodulation reference signal (DMRS) to first resource elements in a resource block, the first resource elements corresponding to a first DMRS port; determining to boost, if second resource elements, corresponding to a second DMRS port, in the resource block are not used for transmitting the DMRS, a transmit power of the first resource elements corresponding to the first DMRS port with a transmit power of the second resource elements corresponding to the second DMRS port; and transmitting the DMRS and control channel to the terminal using the boosted transmit power, wherein the determining to boost the transmit power comprises determining to boost, if the aggregation level is one of levels 4 and 8, the transmit power of the first resource elements with the transmit power of the second resource elements. - View Dependent Claims (2, 3, 4)
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5. A method by a terminal in a wireless communication system, the method comprising:
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receiving configuration information on a control channel from a base station; determining first resource elements to which a demodulation reference signal (DMRS) is mapped in a resource block, the first resource elements corresponding to a first DMRS port assuming an aggregation level for use in transmitting the control channel; determining, if second resource elements, corresponding to a second DMRS port, in the resource block are not used for transmitting the DMRS, to assume that a transmit power of the first resource elements corresponding to the first DMRS port is boosted with a transmit power of the second resource elements corresponding to the second DMRS port; and receiving the DMRS and control channel based on the boosted transmit power, wherein the determining to assume that the transmit power is boosted comprises assuming, if the aggregation level is one of levels 4 and 8, that the transmit power of the first resource elements is boosted with the transmit power of the second resource elements. - View Dependent Claims (6, 7, 8)
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9. A base station in a wireless communication system, the base station comprising:
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a transceiver configured to communicate with a terminal; and a control unit configured to; control transmitting configuration information on a control channel to the terminal, determine an aggregation level for use in transmitting the control channel, map a demodulation reference signal (DMRS) to first resource elements in a resource block, the first resource elements corresponding to a first DMRS port, determine to boost, if second resource elements, corresponding to a second DMRS port, in the resource block are not used for transmitting the DMRS, a transmit power of the first resource elements corresponding to the first DMRS port with a transmit power of the second resource elements corresponding to the second DMRS port, and control transmitting the DMRS and control channel to the terminal using the boosted transmit power, wherein the control unit is configured to; determine to boost the transmit power of the first resource elements with the transmit power of the second resource elements if the aggregation level is one of levels 4 and 8. - View Dependent Claims (10, 11, 12)
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13. A terminal in a wireless communication system, the terminal comprising:
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a transceiver configured to communicate with a base station; and a control unit configured to; control receiving configuration information on a control channel from the base station, determine first resource elements to which a demodulation reference signal (DMRS) is mapped in a resource block, the first resource elements corresponding to a first DMRS port assuming an aggregation level for use in transmitting the control channel, determine, if second resource elements, corresponding to a second DMRS port, in the resource block are not used for transmitting the DMRS, to assume that a transmit power of the first resource elements corresponding to the first DMRS port is boosted with a transmit power of the second resource elements corresponding to the second DMRS port, and control receiving the DMRS and control channel based on the boosted transmit power, wherein the control unit is configured to; determine to assume that the transmit power is boosted comprises assuming that the transmit power of the first resource elements is boosted with the transmit power of the second resource elements if the aggregation level is one of levels 4 and 8. - View Dependent Claims (14, 15, 16)
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Specification