# US 11,451,357 B2 · Waveform indication in wireless communication networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,357 B2 - Document ID: US11451357B2 - Status: Granted - Kind: B2 - Application number: 16/621,922 - Filed: 2018-06-18 - Published: 2020-04-23 - Granted: 2022-09-20 - Earliest claimed: 2017-06-16 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget Lm Ericsson (Publ) - Inventors: Ravikiran Nory; Robert Baldemair; Daniel Chen Larsson - Web page: https://patentgrep.com/patent/US11451357B2 ## CPC - H04L 1/0003: {by switching between different modulation schemes} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 27/0008: {arrangements for allowing a transmitter or receiver to use more than one type of modulation (negotiating modulation type for two-way transmission paths H04L5/1453)} - H04L 27/2636: {with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]} - H04L 27/2646: {using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length} - H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/51: based on terminal or device properties - 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 Methods and related radio network nodes and user equipment are described for the indication of waveform in wireless communication networks. The methods include, and related radio network nodes and user equipment adapted to, receiving a downlink transmission from a radio network node, where the downlink transmission having at least one characteristic; selecting one waveform from two or more waveforms for an upcoming uplink transmission to the radio network node, where the waveform being selected based at least in part on the at least one characteristic of the downlink transmission; and transmitting the uplink transmission to the radio network node using the selected waveform. ## Claims ### Claim 1 A method in a user equipment, UE, the method comprising: receiving a downlink control message from a radio network node, the downlink control message having a format and being scrambled using a radio network temporary identifier, RNTI; selecting one waveform type from two or more waveform types for an upcoming uplink transmission to the radio network node, the waveform type being selected based on a combination of the format of the downlink control message, the RNTI used to scramble the downlink control message, and a radio resource control, RRC, configuration of the UE; transmitting the uplink transmission to the radio network node using the selected waveform type. ### Claim 2 (depends on 1) The method of claim 1, wherein the downlink control message comprises an uplink grant. ### Claim 3 (depends on 1) The method of claim 1, further comprising selecting one resource allocation from two or more resource allocations for the uplink transmission based on the combination of the format of the downlink control message, the RNTI used to scramble the downlink control message, and the RRC configuration of the UE, and wherein transmitting the uplink transmission to the radio network node is further performed using the selected resource allocation. ### Claim 4 (depends on 1) The method of claim 1, further comprising obtaining an identification of the two or more waveform types. ### Claim 5 (depends on 4) The method of claim 4, wherein obtaining an identification of the two or more waveform types comprises receiving an identification of at least one of the two or more waveform types via RRC signaling received from the radio network node. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining a first waveform type of the two or more waveform types from system information; determining a second waveform type of the two or more waveform types from the RRC configuration of the UE. ### Claim 7 (depends on 1) The method of claim 1, wherein one of the two or more waveform types is a Discrete Fourier Transform Spread orthogonal frequency division multiplexing, DFTS-OFDM, based waveform type having Discrete Fourier Transform, DFT, precoding. ### Claim 8 A user equipment, UE, comprising processing circuitry adapted to: receive a downlink control message from a radio network node, the downlink control message having a format and being scrambled using a radio network temporary identifier, RNTI; select one waveform type from two or more waveform types for an upcoming uplink transmission to the radio network node, the waveform type being selected based on a combination of the format of the downlink control message, the RNTI used to scramble the downlink control message, a radio resource control, RRC, configuration of the UE; transmit the uplink transmission to the radio network node using the selected waveform type. ### Claim 9 (depends on 8) The UE of claim 8, wherein the downlink control message comprises an uplink grant. ### Claim 10 (depends on 8) The UE of claim 8, wherein the processing circuitry is further adapted to select one resource allocation from two or more resource allocations for the uplink transmission based on the combination of the format of the downlink control message, the RNTI used to scramble the downlink control message, and the RRC configuration of the UE, and wherein transmitting the uplink transmission to the radio network node is further performed using the selected resource allocation. ### Claim 11 (depends on 8) The UE of claim 8, wherein the processing circuitry is further adapted to obtain an identification of the two or more waveform types. ### Claim 12 (depends on 11) The UE of claim 11, wherein when obtaining an identification of the two or more waveform types, the processing circuitry is further adapted to receive an identification of at least one of the two or more waveform types via RRC signaling received from the radio network node. ### Claim 13 (depends on 8) The UE of claim 8, wherein the processing circuitry is further adapted to: determine a first waveform type of the two or more waveform types from system information; determine a second waveform type of the two or more waveform types from the RRC configuration of the UE. ### Claim 14 (depends on 8) The UE of claim 8, wherein one of the two or more waveform types is a Discrete Fourier Transform Spread orthogonal frequency division multiplexing, DFTS-OFDM, based waveform type having Discrete Fourier Transform, DFT, precoding. ### Claim 15 A method in a radio network node, the method comprising: transmitting a downlink control message to a user equipment, the downlink control message having a format and being scrambled using a radio network temporary identifier, RNTI; receiving an uplink transmission from the user equipment, the uplink transmission using a waveform type selected from two or more waveform types based on a combination of the format of the downlink control message, the RNTI used to scramble the downlink control message, and a radio resource control, RRC, configuration of the UE. ### Claim 16 (depends on 15) The method of claim 15, wherein the downlink control message comprises an uplink grant. ### Claim 17 (depends on 15) The method of claim 15, further comprising determining the format of the downlink control message based at least in part on the one of the two or more waveform types desired for the upcoming uplink transmission. ### Claim 18 (depends on 15) The method of claim 15, further comprising transmitting an identification of at least one of the two or more waveform types to the UE. ### Claim 19 (depends on 18) The method of claim 18, wherein transmitting an identification of at least one of the two or more waveform types the UE is performed via RRC signaling. ### Claim 20 A radio network node comprising processing circuitry adapted to: transmit a downlink control message to a user equipment, the downlink control message having a format and being scrambled using a radio network temporary identifier, RNTI; receive an uplink transmission from the user equipment, the uplink transmission using a waveform type selected from two or more waveform types based on a combination of the format of the downlink control message, RNTI used to scramble the downlink control message, and a radio resource control, RRC, configuration of the UE. ### Claim 21 (depends on 20) The radio network node of claim 20, wherein the downlink control message comprises an uplink grant. ### Claim 22 (depends on 20) The radio network node of claim 20, wherein the processing circuitry is further adapted to determine the format of the downlink control message based at least in part on the one of the two or more waveform types desired for the upcoming uplink transmission. ### Claim 23 (depends on 20) The radio network node of claim 20, wherein the processing circuitry is further adapted to transmit an identification of at least one of the two or more waveform types to the UE. ### Claim 24 (depends on 23) The radio network node of claim 23, wherein transmitting an identification of at least one of the two or more waveform types to the UE is performed via RRC signaling.