US Patent No. 10,602,490

COMMUNICATION SYSTEM


Patent No. 10,602,490
Issue Date March 24, 2020
Title Communication System
Inventorship Daiichiro Nakashima, Sakai (JP)
Kazuyuki Shimezawa, Sakai (JP)
Toshizo Nogami, Sakai (JP)
Kimihiko Imamura, Sakai (JP)
Assignee SHARP KABUSHIKI KAISHA, Sakai (JP)

Claim of US Patent No. 10,602,490

2. A base station apparatus configured to communicate with a terminal apparatus, the base station apparatus comprising:a radio resource controller configured to and/or programmed to
configure, based on a radio resource control (RRC) signaling, a first downlink control channel set and a second downlink control channel set for downlink control channel monitoring,
configure a reception type of the first downlink control channel set and a reception type of the second downlink control channel set with a localized reception type or a distributed reception type, the reception type of the first downlink control channel set and the reception type of the second downlink control channel set being configured with a same reception type;
a transmitter configured to and/or programmed to transmit a downlink control channel based on the first downlink control channel set and the second downlink control channel set, a first uplink control channel resource offset being configured by the RRC signaling for the first downlink control channel set, and a second uplink control channel resource offset being configured by the RRC signaling for the second downlink control channel set; and
a receiver configured to and/or programmed to receive a hybrid automatic repeat request-acknowledgement (HARQ-ACK) for a downlink shared channel transmission indicated by a detection of the downlink control channel, the HARQ-ACK being received using an uplink control channel resource, wherein
each of the first downlink control channel set and the second downlink control channel set consists of a plurality of physical resource blocks,
in a case that the downlink control channel is in the first downlink control channel set, the uplink control channel resource is determined based on at least a lowest control channel element index used to construct the downlink control channel and the first uplink control channel resource offset,
in a case that the downlink control channel is in the second downlink control channel set, the uplink control channel resource is determined based on at least a lowest control channel element index used to construct the downlink control channel and the second uplink control channel resource offset.