Control information transmission and uplink control channel resource mapping

摘要

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.

主权项

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; andthe 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.