# US 10,455,550 B2 · Terminal device operating with a special subframe including three regions, base station device operating with a special subframe including three regions, and communication method operating with a special subframe including three regions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,550 B2 - Document ID: US10455550B2 - Status: Granted - Kind: B2 - Application number: 15/113,860 - Filed: 2015-01-28 - Published: 2017-04-27 - Granted: 2019-10-22 - Earliest claimed: 2014-01-30 - Assignees: Sharp Kabushiki Kaisha - Applicants: Sharp Kabushiki Kaisha - Inventors: Toshizo Nogami; Tatsushi Aiba; Shoichi Suzuki; Kazunari Yokomakura - Web page: https://patentgrep.com/patent/US10455550B2 ## CPC - H04L 27/2602: {Signal structure} - H04L 5/1469: {using time-sharing} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/20: Control channels or signalling for resource management - H04W 88/02: Terminal devices - H04W 88/08: Access point devices - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A first UL-DL configuration configured by using a common RRC message is set; it is determined whether or not the number of enhanced control channel elements in one enhanced physical downlink control channel set in a subframe is set to 0 in a case where an index of an uplink control channel resource is determined, based on whether or not the subframe is a predetermined special subframe in the first UL-DL configuration; a second UL-DL configuration indicated by downlink control information which is transmitted on a physical downlink control channel is set; and in a case where the second UL-DL configuration is set, determination is performed based on whether or not the subframe is the predetermined special subframe in the second UL-DL configuration. ## Claims ### Claim 1 A terminal device comprising: higher layer processing circuitry that sets a first UL-DL configuration configured by using a common RRC message; and control circuitry that determines whether a number of enhanced control channel elements in one enhanced physical downlink control channel set in a subframe is set to 0, in a case where an uplink control channel resource is determined, wherein in a case where a second UL-DL configuration indicated by downlink control information which is transmitted on a physical downlink control channel is not set, the control circuitry determines whether the number of the enhanced control channel elements is set to 0 based on whether the subframe is a predetermined special subframe in the first UL-DL configuration, in a case where the second UL-DL configuration is set, the control circuitry sets the number of enhanced control channel elements to 0 if the subframe is the predetermined special subframe in the second UL-DL configuration, and the predetermined special subframe is a subframe including three regions which are a region (DwPTS) in which downlink transmission is performed, a guard period (GP), and a region (UpPTS) in which uplink transmission is performed, in this order. ### Claim 2 (depends on 1) The terminal device according to claim 1, wherein the DwPTS in the predetermined special subframe is constituted by OFDM symbols of which the number is equal to or less than a predetermined number. ### Claim 3 (depends on 1) The terminal device according to claim 1, wherein the predetermined special subframe is a special subframe having a special subframe configuration 0 or 5 in a normal cyclic prefix, or a special subframe having a special subframe configuration 0, 4, or 7 in an extended cyclic prefix. ### Claim 4 (depends on 1) The terminal device according to claim 1, wherein the control circuitry sets the number of enhanced control channel elements in the one enhanced physical downlink control channel set in the subframe, to 0 in a case where the subframe is the predetermined special subframe in the first UL-DL configuration. ### Claim 5 A base station device comprising: higher layer processing circuitry that configures a first UL-DL configuration by using a common RRC message; and control circuitry that determines whether a number of enhanced control channel elements in one enhanced physical downlink control channel set in a subframe is set to 0, in a case where an uplink control channel resource is determined, wherein in a case where a second UL-DL configuration indicated by downlink control information which is transmitted on a physical downlink control channel is not set the control circuitry determines whether the number of the enhanced control channel elements k set to 0 based on whether the subframe is a predetermined special subframe in the first UL-DL configuration, in a case where the second UL-DL configuration set the control circuitry sets then umber of enhanced control channel elements to 0 if the subframe is the predetermined special subframe in the second UL-DL configuration, and the predetermined special subframe is a subframe including three regions which are a region (DwPTS) in which downlink transmission is performed, a guard period (GP), and a region (UpPTS) in which uplink transmission is performed, in this order. ### Claim 6 (depends on 5) The base station device according to claim 5, wherein the DwPTS in the predetermined special subframe is constituted by OFDM symbols of which the number is equal to or less than a predetermined number. ### Claim 7 (depends on 5) The base station device according to claim 5, wherein the predetermined special subframe is a special subframe having a special subframe configuration 0 or 5 in a normal cyclic prefix, or a special subframe having a special subframe configuration 0, 4, or 7 in an extended cyclic prefix. ### Claim 8 (depends on 5) The base station device according to claim 5, wherein the control circuitry sets the number of enhanced control channel elements in the one enhanced physical downlink control channel set in the subframe, to 0 in a case where the subframe is the predetermined special subframe in the first UL-DL configuration. ### Claim 9 A communication method of a terminal device, the communication method comprising: setting a first UL-DL configuration which is configured by using a common RRC message; determining whether a number of enhanced control channel elements in one enhanced physical downlink control channel set in a subframe, is set to 0 in a case where an uplink control channel resource is determined; in a case where a second UL-DL configuration indicated by downlink control information which is transmitted on a physical downlink control channel is not set, determining whether the number of the enhanced control channel elements is set to 0 based on whether the subframe is a predetermined special subframe in the first UL-DL configuration; and in a case where the second UL-DL configuration is set, setting the number of enhanced control channel elements to 0 if the subframe is the predetermined special subframe in the second UL-DL configuration; wherein the predetermined special subframe is a subframe including three regions which are a region (DwPTS) in which downlink transmission is performed, a guard period (GP), and a region (UpPTS) in which uplink transmission is performed, in this order. ### Claim 10 A communication method of a base station device, the communication method comprising: setting a first UL-DL configuration which is configured by using a common RRC message; determining whether a number of enhanced control channel elements in one enhanced physical downlink control channel set in a subframe, is set to 0 in a case where an uplink control channel resource is determined; in a case where a second UL-DL configuration indicated by downlink control information which is transmitted on a physical downlink control channel is not set, determining whether the number of the enhanced control channel elements is set to 0 based on whether the subframe is a predetermined special subframe in the first UL-DL configuration; and in a case where the second UL-DL configuration is set, setting the number of enhanced control channel elements to 0 if the subframe is the predetermined special subframe in the second UL-DL configuration; wherein the predetermined special subframe is a subframe including three regions which are a region (DwPTS) in which downlink transmission is performed, a guard period (GP), and a region (UpPTS) in which uplink transmission is performed, in this order.