Patent ID: 9491749
Filing Date: 2016-11-08
CPC Classification: H04J,H04L,H04W

Claim Text:
1. A radio base station comprising: a transmitter that transmits downlink control information in an enhanced downlink control channel that is frequency-division-multiplexed with a downlink shared channel; and a processor that maps the downlink control information to a plurality of resource elements (REs) that constitute physical resource block (PRB) pairs configured for the enhanced downlink control channel, wherein the downlink control information is generated in units of enhanced control channel elements (eCCEs), each eCCE consisting of multiple enhanced resource element groups (eREGs), and the processor numbers the REs that constitute the PRB pairs, except REs carrying demodulation reference signals (DM-RSs), with numbers corresponding to index numbers of eREGs in frequency and time directions, and maps each eREG to REs corresponding to an index number of the eREG.