# US 2018/0324794 A1 · Radio Base Station and User Equipment and Methods Therein > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324794 A1 - Document ID: US20180324794A1 - Status: Published application - Kind: A1 - Application number: 16/033,929 - Filed: 2018-07-12 - Published: 2018-11-08 - Earliest claimed: 2010-01-18 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Robert Baldemair; David Astely; Dirk Gerstenberger; Daniel Larsson; Stefan Parkvall - Web page: https://patentgrep.com/patent/US20180324794A1 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04J 11/0033: {by pre-cancellation of known interference, e.g. using a matched filter, dirty paper coder or Thomlinson-Harashima precoder (correlative coding in synchronous or start-stop systems H04L25/497)} - H04J 11/005: {of intercell interference} - H04L 5/0019: {in which one code is applied, as a temporal sequence, to all frequencies} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - 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 Embodiments herein include a method in a user equipment (UE) for transmitting uplink control information in time slots of a subframe over a radio channel to a radio base station. The uplink control information is comprised in a block of bits. The UE maps the block of bits to a sequence of complex valued modulation symbols. The UE block spreads the sequence across Discrete Fourier Transform Spread—Orthogonal Frequency Division Multiplexing (DFTS-OFDM) symbols. This is performed by applying a spreading sequence to the sequence of complex valued modulation symbols, to achieve a block spread sequence of complex valued modulation symbols. The UE further transforms the block-spread sequence, per DFTS-OFDM symbol. This is performed by applying a matrix that depends on a DFTS-OFDM symbol index and/or slot index to the block-spread sequence. The UE also transmits the block spread sequence, as transformed, over the radio channel to the radio base station. ## Claims ### Claim 1 A method in a user equipment for transmitting uplink control information in time slots of a subframe over a radio channel to a radio base station, wherein the uplink control information is comprised in a block of bits, and wherein the method comprises: mapping the block of bits to a sequence of complex valued modulation symbols; block spreading the sequence of complex valued modulation symbols across Discrete Fourier Transform Spread—Orthogonal Frequency Division Multiplexing (DFTS-OFDM) symbols by applying a spreading sequence to the sequence of complex valued modulation symbols, such that different sets of complex valued modulation symbols are respectively allocated to different DFTS-OFDM symbols; cyclically shifting each said set of complex valued modulation symbols in dependence on at least one of a DFTS-OFDM symbol index and a slot index; Discrete Fourier Transform (DFT) transforming each shifted set of complex valued modulation symbols; and transmitting the DFT transformed sets of complex valued modulation symbols over the radio channel to the radio base station. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: error correction encoding the block of bits; and scrambling the block of bits before mapping the block of bits to the sequence of complex valued modulation symbols. ### Claim 3 (depends on 1) The method according to claim 1, further comprising Orthogonal Frequency Division Multiplexing (OFDM) modulating each Discrete Fourier Transform (DFT) transformed set of complex valued modulation symbols. ### Claim 4 (depends on 1) The method according to claim 1, wherein said transmitting comprises transmitting a first part of the sequence of complex valued modulation symbols in a first time slot and a second part of the sequence of complex valued modulation symbols in a second time slot. ### Claim 5 (depends on 1) The method according to claim 1, wherein the block of bits corresponds to uplink control information and comprises jointly encoded acknowledgements and non-acknowledgements. ### Claim 6 A user equipment for transmitting uplink control information in time slots of a subframe over a radio channel to a radio base station, wherein the uplink control information is comprised in a block of bits, and wherein the user equipment comprises a mapping circuit configured to map the block of bits to a sequence of complex valued modulation symbols; a block spreading circuit configured to block spread the sequence of complex valued modulation symbols across Discrete Fourier Transform Spread—Orthogonal Frequency Division Multiplexing (DFTS-OFDM) symbols by applying a spreading sequence to the sequence of complex valued modulation symbols, such that different sets of complex valued modulation symbols are respectively allocated to different DFTS-OFDM symbols; a cyclic shift circuit configured to cyclically shift each said set of complex valued modulation symbols in dependence on at least one of a DFTS-OFDM symbol index and a slot index; a transforming circuit configured to Discrete Fourier Transform (DFT) transform each shifted set of complex valued modulation symbols; and a transmitter configured to transmit the DFT transformed sets of complex valued modulation symbols over the radio channel to the radio base station. ### Claim 7 (depends on 6) The user equipment according to claim 6, further comprising: an error correction coding circuit configured to error correction encode the block of bits; and a scrambling circuit configured to scramble the block of bits before mapping the block of bits to the sequence of complex valued modulation symbols. ### Claim 8 (depends on 6) The user equipment according to claim 6, further comprising an Orthogonal Frequency Division Multiplexing (OFDM) modulator configured to OFDM modulate each Discrete Fourier Transform (DFT) transformed set of complex valued modulation symbols. ### Claim 9 (depends on 6) The user equipment according to claim 6, wherein the transmitter is configured to transmit a first part of the sequence of complex valued modulation symbols in a first time slot and a second part of the sequence of complex valued modulation symbols in a second time slot. ### Claim 10 (depends on 6) The user equipment according to claim 6, wherein the block of bits corresponds to uplink control information and comprises jointly encoded acknowledgements and non-acknowledgements. ### Claim 11 A method in a terminal for transmitting uplink control information in a slot of a subframe over a channel to a base station in a wireless communication system, wherein the uplink control information is comprised in a code word, and wherein the method comprises: mapping the code word to modulation symbols; block spreading the modulation symbols across Discrete Fourier Transform Spread—Orthogonal Frequency Division Multiplexing (DFTS-OFDM) symbols by repeating the modulation symbols for each DFTS-OFDM symbol and applying a block spreading sequence of weight factors to the repeated modulation symbols, to achieve a respective weighted copy of the modulation symbols for each DFTS-OFDM symbol; cyclically shifting each said weighted copy in dependence on at least one of a DFTS-OFDM symbol index and a slot index; Discrete Fourier Transform (DFT) transforming each weighted copy, as cyclically shifted; and transmitting, on each DFTS-OFDM symbol, the respective weighted copy of the modulation symbols, as transformed, to the base station. ### Claim 12 (depends on 11) The method according to claim 11, wherein the channel is a Physical Uplink Control Channel. ### Claim 13 (depends on 11) The method according to claim 11, wherein the code word is a number of bits. ### Claim 14 (depends on 11) The method according to claim 11, wherein the modulation symbols are Quadrature Phase-Shift Keying symbols or Binary Phase-Shift Keying symbols. ### Claim 15 (depends on 11) The method according to claim 11, wherein the block spreading sequence is an orthogonal sequence. ### Claim 16 A method in a terminal for transmitting uplink control information in a slot of a subframe over a channel to a base station in a wireless communication system, wherein the uplink control information is comprised in a block of bits, and wherein the method comprises: scrambling the block of bits in dependence on at least one of a Discrete Fourier Transform Spread—Orthogonal Frequency Division Multiplexing (DFTS-OFDM) symbol index and a slot index; mapping the scrambled block of bits to a sequence of complex valued modulation symbols; block spreading the sequence of complex valued modulation symbols across DFTS-OFDM symbols by applying a spreading sequence to the sequence of complex valued modulation symbols, to obtain a block spread sequence of complex valued modulation symbols; Discrete Fourier Transform (DFT) transforming the block spread sequence of complex valued modulation symbols in dependence on at least one of a DFTS-OFDM symbol index and a slot index; and transmitting the DFT transformed block spread sequence over the radio channel to the radio base station. ### Claim 17 (depends on 16) The method of claim 16, wherein said scrambling is cell specific.