WIRELESS COMMUNICATIONS METHOD, WIRELESS COMMUNICATIONS SYSTEM, AND WIRELESS BASE STATION

摘要

A wireless communications method, a wireless communications system, and a wireless base station that appropriately allocate wireless resources to downlink control information, in an expanded downlink control channel. The wireless communications method is in a wireless communications system in which the wireless base station sends downlink control information to each user terminal via an expanded downlink control channel that is frequency-division multiplexed with a downlink shared data channel. The wireless communications method has: a step in which the wireless base station generates downlink control information in eCCE units configured by a plurality of expanded resource element groups (eREG); and a step in which the downlink control information is mapped to a plurality of resource areas for the expanded downlink control channel, in eREG units. The eREG are configured by a plurality of resource elements (RE) and the wireless base station performs mapping such that the number of RE configuring each of the different eREG is uniform in each resource area, and the plurality of RE configuring 1eREG are scattered among a plurality of OFDM symbols.