# US 10,455,390 B2 · Terminal and transmission method for transmitting repetition signals using a transmission format that accommodates SRS transmission > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,390 B2 - Document ID: US10455390B2 - Status: Granted - Kind: B2 - Application number: 15/653,154 - Filed: 2017-07-18 - Published: 2017-11-02 - Granted: 2019-10-22 - Earliest claimed: 2015-07-28 - Assignees: Panasonic Intellectual Property Corporation of America - Applicants: Panasonic Intellectual Property Corporation of America - Inventors: Tetsuya Yamamoto; Hidetoshi Suzuki; Ayako Horiuchi - Web page: https://patentgrep.com/patent/US10455390B2 ## CPC - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - H04B 7/066: {Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]} - H04J 13/004: {Orthogonal} - H04J 13/18: Allocation of orthogonal codes - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0062: {Avoidance of ingress interference, e.g. ham radio channels} - H04L 27/2602: {Signal structure} - H04L 27/26035: {Maintenance of orthogonality, e.g. for signals exchanged between cells or users, or by using covering codes or sequences (using different training sequence per antenna H04B7/0684; code allocation H04J13/16)} - H04L 27/2643: {using symbol repetition, e.g. time domain realization of distributed FDMA} - H04W 72/20: Control channels or signalling for resource management - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - 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) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A repeater generates repetition signals by repeating an uplink signal over a plurality of subframes. If the plurality of subframes do not include a transmission candidate subframe of a sounding reference signal used to measure uplink reception quality, a controller sets a first transmission format to all the plurality of subframes, and if the plurality of subframes include the transmission candidate subframe, the controller sets a second transmission format to all the plurality of subframes. A transmitter transmits the repetition signals using the set transmission format. ## Claims ### Claim 1 A terminal comprising: reception circuitry, which, in operation, receives configuration information indicative of a candidate subframe used by the terminal to transmit a sounding reference signal (SRS); control circuitry, which is coupled to the reception circuitry and which, in operation, generates repetition signals by repeating a physical uplink control channel (PUCCH) signal over a plurality of consecutive subframes, wherein, when the plurality of consecutive subframes include the candidate subframe for transmitting the SRS, a transmission format which accommodates the SRS transmission is set for all of the plurality of consecutive subframes including those subframes other than the candidate subframe; transmission circuitry, which is coupled to the control circuitry and which, in operation, transmits the repetition signals in the plurality of consecutive subframes for all of which the same transmission format is set. ### Claim 2 (depends on 1) The terminal according to claim 1, wherein, when a total number of repetitions of the PUCCH signal is larger than a number of the plurality of consecutive subframes, the same transmission resource is set for at least the plurality of consecutive subframes. ### Claim 3 (depends on 1) The terminal according to claim 1, wherein the transmission format is a shortened PUCCH format according to 3GPP LTE (Long Term Evolution) standards. ### Claim 4 (depends on 1) The terminal according to claim 1, wherein, when the plurality of consecutive subframes do not include the candidate subframe for transmitting the SRS, a normal PUCCH format according to 3GPP LTE (Long Term Evolution) standards is set for all of the plurality of consecutive subframes. ### Claim 5 (depends on 1) The terminal according to claim 1, wherein, when the plurality of consecutive subframes do not include the candidate subframe for transmitting the SRS, a response signal mapped in each slot of the plurality of consecutive subframes is spread by a Walsh sequence having a sequence length of 4. ### Claim 6 (depends on 1) The terminal according to claim 1, wherein each subframe consists of 2 slots. ### Claim 7 (depends on 6) The terminal according to claim 6, wherein the transmission format is set for all of the slots of the plurality of consecutive subframes. ### Claim 8 (depends on 1) The terminal according to claim 1, wherein the reception circuitry, in operation, receives the configuration information through cell-specific higher layer signaling. ### Claim 9 (depends on 1) The terminal according to claim 1, wherein the configuration information indicates an SRS transmission period (TSFC) in which the SRS is transmitted and an SRS transmission offset (ΔSFC) which specifics a subframe in which the SRS transmission starts. ### Claim 10 (depends on 1) The terminal according to claim 1, which is configured to support a MTC (Machine Type Communication) coverage enhancement mode. ### Claim 11 A transmission method comprising: receiving configuration information indicative of a candidate subframe to transmit a sounding reference signal (SRS); generating repetition signals by repeating a physical uplink control channel (PUCCH) signal over a plurality of consecutive subframes, wherein, when the plurality of consecutive subframes include the candidate subframe for transmitting the SRS, a transmission format which accommodates the SRS transmission is set for all of the plurality of consecutive subframes including those subframes other than the candidate subframe; transmitting the repetition signals in the plurality of consecutive subframes for all of which the same transmission format is set. ### Claim 12 (depends on 11) The transmission method according to claim 11, wherein, when a total number of repetitions of the PUCCH signal is larger than a number of the plurality of consecutive subframes, the same transmission resource is set for at least the plurality of consecutive subframes. ### Claim 13 (depends on 11) The transmission method according to claim 11, wherein the transmission format is a shortened PUCCH format according to 3GPP LTE (Long Term Evolution) standards. ### Claim 14 (depends on 11) The transmission method according to claim 11, wherein, when the plurality of consecutive subframes do not include the candidate subframe for transmitting the SRS, a normal PUCCH format according to 3GPP LTE (Long Term Evolution) standards is set for all of the plurality of consecutive subframes. ### Claim 15 (depends on 11) The transmission method according to claim 11, wherein, when the plurality of consecutive subframes do not include the candidate subframe for transmitting the SRS, a response signal mapped in each slot of the plurality of consecutive subframes is spread by a Walsh sequence having a sequence length of 4. ### Claim 16 (depends on 11) The transmission method according to claim 11, wherein each subframe consists of 2 slots. ### Claim 17 (depends on 16) The transmission method according to claim 16, wherein the transmission format is set for all of the slots of the plurality of consecutive subframes. ### Claim 18 (depends on 11) The transmission method according to claim 11, comprising receiving the configuration information through cell-specific higher layer signaling. ### Claim 19 (depends on 11) The transmission method according to claim 11, wherein the configuration information indicates an SRS transmission period (TSFC) in which the SRS is transmitted and an SRS transmission offset (ΔSFC) which specifies a subframe in which the SRS transmission starts. ### Claim 20 (depends on 11) The transmission method according to claim 11, which is used in a MTC (Machine Type Communication) coverage enhancement mode.