Control information transmission and uplink control channel resource mapping
First Claim
1. A method of transmitting control information for a specific user equipment through a data region of physical resource-block (PRB) pairs in a subframe, in a transmission/reception point, the method comprising:
- assigning at least one enhanced physical downlink control channel (EPDCCH) set, wherein each EPDCCH set includes an X number of PRB pairs in the subframe, and the X is a natural number which is greater than or equal to “
1” and
is less than or equal to the number of resource blocks (RBs) per downlink bandwidth; and
transmitting the control information to the specific user equipment through at least one of at least two enhanced control channel elements (ECCEs) indexed per EPDCCH set,wherein;
each of the ECCEs includes at least one of four and eight resource-element groups; and
the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair or at least two PRB pairs, andwherein if the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair,a product of a lowest index of PRB pairs transmitting the control information among the X number of PRB pairs of the each EPDCCH set and the number of ECCEs per PRB pair is used as one resource determination component, in the case of a physical uplink control channel (PUCCH) resource mapping of ACK/NACK associated with a physical downlink shared channel (PDSCH) assigned according to downlink scheduling information included in the control information.
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Accused Products
Abstract
The disclosure is related to transmitting downlink control information through a downlink control channel adopted in a data region, and transmitting uplink control information for user equipment receiving the downlink control information. Furthermore, the disclosure is related to performing a physical uplink control channel (PUCCH) resource mapping for uplink HARQ-ACK/NACK feedback of user equipment. Herein, the uplink HARQ-ACK/NACK feedback may be performed by the user equipment in response to a downlink data channel assigned according to downlink scheduling information transmitted through the adopted downlink control channel.
14 Citations
12 Claims
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1. A method of transmitting control information for a specific user equipment through a data region of physical resource-block (PRB) pairs in a subframe, in a transmission/reception point, the method comprising:
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assigning at least one enhanced physical downlink control channel (EPDCCH) set, wherein each EPDCCH set includes an X number of PRB pairs in the subframe, and the X is a natural number which is greater than or equal to “
1” and
is less than or equal to the number of resource blocks (RBs) per downlink bandwidth; andtransmitting the control information to the specific user equipment through at least one of at least two enhanced control channel elements (ECCEs) indexed per EPDCCH set, wherein; each of the ECCEs includes at least one of four and eight resource-element groups; and the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair or at least two PRB pairs, and wherein if the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair, a product of a lowest index of PRB pairs transmitting the control information among the X number of PRB pairs of the each EPDCCH set and the number of ECCEs per PRB pair is used as one resource determination component, in the case of a physical uplink control channel (PUCCH) resource mapping of ACK/NACK associated with a physical downlink shared channel (PDSCH) assigned according to downlink scheduling information included in the control information. - View Dependent Claims (2, 3)
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4. A method of mapping an uplink control channel resource in user equipment, the method comprising:
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receiving control information including downlink scheduling information through at least one of at least two enhanced control channel elements (ECCEs) from a transmission/reception point, wherein the at least two ECCEs are indexed per each of at least one enhanced physical downlink control channel (EPDCCH) set, the each EPDCCH set includes an X number of physical resource-block (PRB) pairs in a subframe, and the X is a natural number which is greater than or equal to “
1” and
is less than or equal to the number of resource blocks (RBs) per downlink bandwidth; andperforming a physical uplink control channel (PUCCH) resource mapping for ACK/NACK associated with a physical downlink shared channel (PDSCH) assigned according to the downlink scheduling information, wherein; each of the ECCEs includes at least one of four and eight resource-element groups; and the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair or at least two PRB pairs, and wherein if the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair, a product of a lowest index of PRB pairs used for reception of the control information among the X number of PRB pairs of the each EPDCCH set and the number of ECCEs per PRB pair is used as one resource determination component in the case of performing the PUCCH resource mapping of the ACK/NACK. - View Dependent Claims (5, 6)
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7. A transmission/reception point for transmitting control information for a specific user equipment through a data region of physical resource-block (PRB) pairs in a subframe, the transmission/reception point comprising:
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a control unit configured to assign at least one enhanced physical downlink control channel (EPDCCH) set, wherein each EPDCCH set includes an X number of PRB pairs in the subframe, and the X is a natural number which is greater than or equal to “
1” and
is less than or equal to the number of resource blocks (RBs) per downlink bandwidth; anda transmitting unit configured to transmit the control information to the specific user equipment through at least one of at least two enhanced control channel elements (ECCEs) indexed per EPDCCH set, wherein; each of the ECCEs includes at least one of four and eight resource-element groups; and the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair or at least two PRB pairs, and wherein if the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair, a product of a lowest index of PRB pairs transmitting the control information among the X number of PRB pairs of the each EPDCCH set and the number of ECCEs per PRB pair is used as one resource determination component, in the case of a physical uplink control channel (PUCCH) resource mapping of ACK/NACK associated with a physical downlink shared channel (PDSCH) assigned according to downlink scheduling information included in the control information. - View Dependent Claims (8, 9)
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10. User equipment comprising:
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a receiving unit configured to receive control information including downlink scheduling information through at least one of at least two enhanced control channel elements (ECCEs) from a transmission/reception point, wherein the at least two ECCEs are indexed per each of at least one enhanced physical downlink control channel (EPDCCH) set, the each EPDCCH set includes an X number of physical resource-block (PRB) pairs in a subframe, and the X is a natural number which is greater than or equal to “
1” and
is less than or equal to the number of resource blocks (RBs) per downlink bandwidth; anda control unit configured to perform a physical uplink control channel (PUCCH) resource mapping for an ACK/NACK associated with a physical downlink shared channel (PDSCH) assigned according to the downlink scheduling information, wherein; each of the ECCEs includes at least one of four and eight resource-element groups; and the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair or at least two PRB pairs, and wherein if the at least one of four and eight resource-element groups of each ECCE are located in one PRB pair, a product of a lowest index of PRB pairs used for reception of the control information among the X number of PRB pairs of the each EPDCCH set and the number of ECCEs per PRB pair is used as one resource determination component in the case of performing the PUCCH resource mapping of the ACK/NACK. - View Dependent Claims (11, 12)
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Specification