# US 10,321,445 B2 · Communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,321,445 B2 - Document ID: US10321445B2 - Status: Granted - Kind: B2 - Application number: 15/815,905 - Filed: 2017-11-17 - Published: 2018-03-15 - Granted: 2019-06-11 - Earliest claimed: 2012-06-07 - Assignees: Sharp Kabushiki Kaisha - Applicants: Sharp Kabushiki Kaisha - Inventors: Daiichiro Nakashima; Kazuyuki Shimezawa; Toshizo Nogami; Kimihiko Imamura - Web page: https://patentgrep.com/patent/US10321445B2 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 1/0026: {Transmission of channel quality indication} - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract It is possible to efficiently transmit and receive signals containing uplink control information between a base station apparatus and a mobile station apparatus. eREG is configured with a plurality of resources into which one DL PRB pair is divided, eCCE is configured with an aggregation of a plurality of eREGs, a second PDCCH is configured with an aggregation of one or more eCCEs, a PUCCH resource corresponds to each eCCE, a first reception processing unit receives information indicating a plurality of second PDCCH regions and information indicating a PUCCH resource in which association with eCCE of the second PDCCH region for each second PDCCH region is started, from the base station apparatus, and a first control unit configures a PUCCH resource, in which association with eCCE of the second PDCCH region is started, for each second PDCCH region, based on the received information. ## Claims ### Claim 1 A terminal apparatus configured to communicate with a base station apparatus, the terminal apparatus comprising: a radio resource controller configured to and/or programmed to configure, based on a radio resource control (RRC) signaling, a first enhanced physical downlink control channel (EPDCCH) set and a second EPDCCH set for EPDCCH monitoring, and configure a transmission type of the first EPDCCH set and a transmission type of the second EPDCCH set with a localized transmission type or a distributed transmission type; the transmission type of the first EPDCCH set and the transmission type of the second EPDCCH set being configured with a same transmission type, a receiver configured to and/or programmed to monitor a set of EPDCCH candidates based on the first EPDCCH set and the second EPDCCH set, a first physical uplink control channel (PUCCH) resource offset being configured for the first EPDCCH set by the RRC signaling, a second PUCCH resource offset being configured for the second EPDCCH set by the RRC signaling; and a transmitter configured to and/or programmed to transmit a hybrid automatic repeat request-acknowledgement (HARQ-ACK) for a physical downlink shared channel transmission indicated by a detection of an EPDCCH, the HARQ-ACK being transmitted using a PUCCH resource, wherein each of the first EPDCCH set and the second EPDCCH set consists of a plurality of physical resource block pairs, in a case that the EPDCCH is in the first EPDCCH set, the PUCCH resource is determined based on at least a lowest enhanced control channel element (ECCE) index used to construct the EPDCCH and the first PUCCH resource offset, in a case that the EPDCCH is in the second EPDCCH set, the PUCCH resource is determined based on at least a lowest enhanced control channel element (ECCE) index used to construct the EPDCCH and the second PUCCH resource offset. ### Claim 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 enhanced physical downlink control channel (EPDCCH) set and a second EPDCCH set for EPDCCH monitoring, configure a reception type of the first EPDCCH set and a reception type of the second EPDCCH set with a localized reception type or a distributed reception type, the reception type of the first EPDCCH set and the reception type of the second EPDCCH set being configured with a same reception type; a transmitter configured to and/or programmed to transmit an EPDCCH based on the first EPDCCH set and the second EPDCCH set, a first physical uplink control channel (PUCCH) resource offset being configured by the RRC signaling for the first EPDCCH set, and a second PUCCH resource offset being configured by the RRC signaling for the second EPDCCH set; and a receiver configured to and/or programmed to receive a hybrid automatic repeat request-acknowledgement (HARQ-ACK) for a physical downlink shared channel transmission indicated by a detection of the EPDCCH, the HARQ-ACK being received using a PUCCH resource, wherein each of the first EPDCCH set and the second EPDCCH set consists of a plurality of physical resource block pairs, in a case that the EPDCCH is in the first EPDCCH set, the PUCCH resource is determined based on at least a lowest enhanced control channel element (ECCE) index used to construct the EPDCCH and the first PUCCH resource offset, in a case that the EPDCCH is in the second EPDCCH set, the PUCCH resource is determined based on at least a lowest enhanced control channel element (ECCE) index used to construct the EPDCCH and the second PUCCH resource offset. ### Claim 3 A communication method for a terminal apparatus configured to communicate with a base station apparatus, the communication method comprising: configuring, based on a radio resource control (RRC) signaling, a first enhanced physical downlink control channel (EPDCCH) set and a second EPDCCH set for EPDCCH monitoring, configuring a transmission type of the first EPDCCH set and a transmission type of the second EPDCCH set with a localized transmission type or a distributed transmission type, the transmission type of the first EPDCCH set and the transmission type of the second EPDCCH set being configured with a same transmission type; monitoring a set of EPDCCH candidates based on the first EPDCCH set and the second EPDCCH set, a first physical uplink control channel (PUCCH) resource offset being configured by the RRC signaling, a second PUCCH resource offset being configured by the RRC signaling; and transmitting a hybrid automatic repeat request-acknowledgement (HARQ-ACK) for a physical downlink shared channel transmission indicated by a detection of an EPDCCH, the HARQ-ACK being transmitted using a PUCCH resource, wherein each of the first EPDCCH set and the second EPDCCH set consists of a plurality of physical resource block pairs, in a case that the EPDCCH is in the first EPDCCH set, the PUCCH resource is determined based on at least a lowest enhanced control channel element (ECCE) index used to construct the EPDCCH and the first PUCCH resource offset, in a case that the EPDCCH is in the second EPDCCH set, the PUCCH resource is determined based on at least a lowest enhanced control channel element (ECCE) index used to construct the EPDCCH and the second PUCCH resource offset. ### Claim 4 A communication method for a base station apparatus configured to communicate with a terminal apparatus, the communication method comprising: configuring, based on a radio resource control (RRC) signaling, a first enhanced physical downlink control channel (EPDCCH) set and a second EPDCCH set for EPDCCH monitoring, configuring a reception type of the first EPDCCH set and a reception type of the second EPDCCH set with a localized reception type or a distributed reception type, the reception type of the first EPDCCH set and the reception type of the second EPDCCH set being configured with a same reception type; transmitting an EPDCCH based on the first EPDCCH set and the second EPDCCH set, a first physical uplink control channel (PUCCH) resource offset being configured by the RRC signaling and a second PUCCH resource offset being configured by the RRC signaling; and receiving a hybrid automatic repeat request-acknowledgement (HARQ-ACK) for a physical downlink shared channel transmission indicated by a detection of the EPDCCH, the HARQ-ACK being received using a PUCCH resource, wherein each of the first EPDCCH set and the second EPDCCH set consists of a plurality of physical resource block pairs, in a case that the EPDCCH is in the first EPDCCH set, the PUCCH resource is determined based on at least a lowest enhanced control channel element (ECCE) index used to construct the EPDCCH and the first PUCCH resource offset, in a case that the EPDCCH is in the second EPDCCH set, the PUCCH resource is determined based on at least a lowest enhanced control channel element (ECCE) index used to construct the EPDCCH and the second PUCCH resource offset.