# US 2016/0262147 A1 · Wireless communication device and wireless communication method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0262147 A1 - Document ID: US20160262147A1 - Status: Published application - Kind: A1 - Application number: 14/988,789 - Filed: 2016-01-06 - Published: 2016-09-08 - Earliest claimed: 2015-03-03 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Zaixue Wei; Xin Zhang; Nanxi Li; Dan Zhang; Jinhui Chen - Web page: https://patentgrep.com/patent/US20160262147A1 ## CPC - H04L 5/0057: {Physical resource allocation for CQI} - H04B 7/06: at the transmitting station - H04L 1/0026: {Transmission of channel quality indication} - H04L 5/0092: {Indication of how the channel is divided} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION ## Abstract The disclosure involves wireless communication device and method. The device includes a communication unit configured to perform a first feedback operation corresponding to a first feedback configuration and to perform a second feedback operation based on a second feedback configuration. The first and second feedback configurations each include a selection for sub-table of a CQI table, and the second feedback configuration is determined based on result of the first feedback operation. ## Claims ### Claim 1 A wireless communication device, comprising: a communication unit configured to perform a first feedback operation corresponding to a first feedback configuration and to perform a second feedback operation based on a second feedback configuration, wherein the first feedback configuration and the second feedback configuration each comprise a selection for a sub-table of a channel quality indication table, and the second feedback configuration is determined based on a result of the first feedback operation. ### Claim 2 (depends on 1) The wireless communication device according to claim 1, wherein the wireless communication device operates as a user equipment, the first feedback operation comprises receiving information indicating the first feedback configuration from a base station or feeding back channel quality to the base station based on the first feedback configuration; and the second feedback operation comprises feeding back channel quality to the base station based on the second feedback configuration. ### Claim 3 (depends on 2) The wireless communication device according to claim 2 further comprising a determination unit configured to determine the first feedback configuration. ### Claim 4 (depends on 3) The wireless communication device according to claim 3, wherein the determination unit determines the first feedback configuration based on signal quality of a request signal received from the base station. ### Claim 5 (depends on 2) The wireless communication device according to claim 2, further comprising a determination unit configured to determine the second feedback configuration. ### Claim 6 (depends on 5) The wireless communication device according to claim 5, wherein in a case where a channel quality indication index of a frequency band containing a plurality of sub-bands is to be fed back, the determination unit determines the second feedback configuration according to the criterion of: selecting a sub-table containing an overall channel quality indication index of the frequency band and a predetermined number of maximum indices among channel quality indication indices of the sub-bands; or selecting a sub-table whose center index has a small difference from the overall channel quality indication index of the frequency band when there is a sub-table containing the channel quality indication indices of all the sub-bands. ### Claim 7 (depends on 5) The wireless communication device according to claim 5, wherein the first feedback operation comprises receiving information indicating the first feedback configuration from a base station, and the communication unit is further configured to perform: a third feedback operation for feeding back channel quality to the base station based on the first feedback configuration; and a fourth feedback operation for notifying the second feedback configuration to the base station. ### Claim 8 (depends on 7) The wireless communication device according to claim 7, wherein the communication unit is configured to indicate, in uplink control information, whether the operation performed by the communication unit is the third feedback operation or the fourth feedback operation. ### Claim 9 (depends on 8) The wireless communication device according to claim 8, wherein the communication unit indicates, by a flag bit in uplink control information format or energy setting of flag bits in uplink control information format, whether the operation performed is the third feedback operation or the fourth feedback operation. ### Claim 10 (depends on 1) The wireless communication device according to claim 1, wherein the wireless communication device operates as a base station, and the first feedback operation comprises sending information indicative of the first feedback configuration to a user equipment or receiving channel quality fed back by the user equipment based on the first feedback configuration; and the second feedback operation comprises receiving channel quality fed back by the user equipment based on the second feedback configuration. ### Claim 11 (depends on 10) The wireless communication device according to claim 10, further comprising a determination unit configured to determine the first feedback configuration. ### Claim 12 (depends on 11) The wireless communication device according to claim 11, wherein the determination unit determines the first feedback configuration based on one selected from the group consisting of signal coverage of the base station, communication load of the base station, statistical characteristic of mobility of user equipment served by the base station, designed capacity of the base station, and any combination thereof. ### Claim 13 (depends on 11) The wireless communication device according to claim 11, wherein the first feedback operation comprises receiving channel quality fed back by the user equipment based on the first feedback configuration, and the wireless communication device further comprises a determination unit configured to determine the second feedback configuration based on channel quality fed back by the user equipment. ### Claim 14 (depends on 13) The wireless communication device according to claim 13, wherein in a case where the channel quality fed back which is received based on the first feedback configuration contains a channel quality indication adjacent to a boundary of a current sub-table, the determination unit determines the second feedback configuration by adjusting the selection for the sub-stable corresponding to the direction of the boundary. ### Claim 15 (depends on 1) The wireless communication device according to claim 1, wherein the first feedback configuration is indicated by a sub-table index value of the channel quality indication table, and the second feedback configuration is indicated by an offset with respect to the sub-table index value. ### Claim 16 (depends on 1) The wireless communication device according to claim 1, wherein at least one of the following is predetermined: number of the sub-tables; length of the sub-table; and overlapping degree between adjacent sub-tables. ### Claim 17 A wireless communication method, comprising: performing a first feedback operation corresponding to a first feedback configuration; determining a second feedback configuration based on a result of the first feedback operation; and performing a second feedback operation based on the second feedback configuration, wherein the first feedback configuration and the second feedback configuration each comprise a selection for a sub-table of a channel quality indication table.