# US 12,119,866 B2 · Integrated circuit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,866 B2 - Document ID: US12119866B2 - Status: Granted - Kind: B2 - Application number: 18/471,080 - Filed: 2023-09-20 - Published: 2024-01-11 - Granted: 2024-10-15 - Earliest claimed: 2008-12-10 - Assignees: Sun Patent Trust - Applicants: Sun Patent Trust - Inventors: Seigo Nakao; Hidetoshi Suzuki; Daichi Imamura - Web page: https://patentgrep.com/patent/US12119866B2 ## CPC - H04B 1/7143: Arrangements for generation of hop patterns - H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems - H04J 11/0053: {using co-ordinated multipoint transmission/reception (co-ordinated antenna or beam-forming aspects H04B7/022)} - H04J 13/22: Allocation of codes with a zero correlation zone - H04B: TRANSMISSION - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract A wireless communication terminal apparatus wherein CoMP communication can normally be performed without increasing the overhead of an upstream line control channel. In this apparatus, a spreading unit (214) primarily spreads a response signal by use of a ZAC sequence established by a control unit (209). A spreading unit (217) secondarily spreads the response signal, to which CP has been added, by use of a block-wise spread code sequence established by the control unit (209). The control unit (209) controls, in accordance with sequence numbers and a hopping pattern established therein, the circular shift amount of the ZAC sequence to be used for the primary spread in the spreading unit (214) and the block-wise spread code sequence to be used for the secondary spread in the spreading unit (217). The hopping pattern established in the control unit (209) is a hopping pattern common to a plurality of base stations that CoMP-receive the response signal. ## Claims ### Claim 1 An integrated circuit to control a process performed in a base station among a plurality of base stations, which perform a coordinated multipoint (CoMP) transmission and reception and each of which has a first identity specific to a cell, the process comprising: transmitting, to a terminal, a first identity specific to a cell; transmitting, to the terminal, a second identity set independently of the first identity; and receiving, from the terminal, a response signal generated using a sequence defined by one of a plurality of cyclic shifts, wherein said one of the plurality of cyclic shifts varies between symbols according to a cyclic shift hopping pattern set based on the second identity. ### Claim 2 (depends on 1) The integrated circuit according to claim 1, comprising: circuitry which, in operation, controls the process; at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data. ### Claim 3 (depends on 1) The integrated circuit according to claim 1, wherein the cyclic shift hopping pattern is common between the plurality of base stations. ### Claim 4 (depends on 1) The integrated circuit according to claim 1, wherein, using a difference between slot numbers in the plurality of base stations, the cyclic shift hopping pattern is adjusted. ### Claim 5 (depends on 1) The integrated circuit according to claim 1, wherein, the cyclic shift hopping pattern is adjusted using a difference between a slot number in the base station and a slot number in another base station among the plurality of base stations. ### Claim 6 (depends on 1) The integrated circuit according to claim 1, wherein the second identity is common between the plurality of base stations. ### Claim 7 (depends on 1) The integrated circuit according to claim 1, wherein the cyclic shift hopping pattern is set based on one of the first identity and the second identity according to a signaling from at least one of the plurality of base stations. ### Claim 8 (depends on 1) The integrated circuit according to claim 1, wherein a number of bits in the first identity is same as that in the second identity. ### Claim 9 (depends on 1) The integrated circuit according to claim 1, wherein the second identity is not related to a parameter of a downlink. ### Claim 10 (depends on 1) The integrated circuit according to claim 1, wherein the second identity is related to a resource used for transmission of the response signal. ### Claim 11 An integrated circuit for a base station among a plurality of base stations, which perform a coordinated multipoint (CoMP) transmission and reception and each of which has a first identity specific to a cell, the integrated circuit comprising circuitry, which, in operation: controls transmission, to a terminal, of a first identity specific to a cell; controls transmission, to the terminal, of a second identity set independently of the first identity; and controls reception, from the terminal, of a response signal generated using a sequence defined by one of a plurality of cyclic shifts, wherein said one of the plurality of cyclic shifts varies between symbols according to a cyclic shift hopping pattern set based on the second identity. ### Claim 12 (depends on 11) The integrated circuit according to claim 11, comprising: at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data. ### Claim 13 (depends on 11) The integrated circuit according to claim 11, wherein the cyclic shift hopping pattern is common between the plurality of base stations. ### Claim 14 (depends on 11) The integrated circuit according to claim 11, wherein, using a difference between slot numbers in the plurality of base stations, the cyclic shift hopping pattern is adjusted. ### Claim 15 (depends on 11) The integrated circuit according to claim 11, wherein, the cyclic shift hopping pattern is adjusted using a difference between a slot number in the base station and a slot number in another base station among the plurality of base stations. ### Claim 16 (depends on 11) The integrated circuit according to claim 11, wherein the second identity is common between the plurality of base stations. ### Claim 17 (depends on 11) The integrated circuit according to claim 11, wherein the cyclic shift hopping pattern is set based on one of the first identity and the second identity according to a signaling from at least one of the plurality of base stations. ### Claim 18 (depends on 11) The integrated circuit according to claim 11, wherein a number of bits in the first identity is same as that in the second identity. ### Claim 19 (depends on 11) The integrated circuit according to claim 11, wherein the second identity is not related to a parameter of a downlink. ### Claim 20 (depends on 11) The integrated circuit according to claim 11, wherein the second identity is related to a resource used for transmission of the response signal.