# US 12,015,574 B2 · Method and device for transmitting PSCCH and PSSCH > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,574 B2 - Document ID: US12015574B2 - Status: Granted - Kind: B2 - Application number: 17/600,037 - Filed: 2020-04-02 - Published: 2022-06-16 - Granted: 2024-06-18 - Earliest claimed: 2019-04-02 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Seungmin Lee; Hanbyul Seo; Daesung Hwang - Web page: https://patentgrep.com/patent/US12015574B2 ## CPC - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 1/0026: {Transmission of channel quality indication} - H04W 72/20: Control channels or signalling for resource management - H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - 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 Provided, according to one embodiment of the present disclosure, is a method for a first device transmitting a PSCCH and a PSSCH to a second device. The method may comprise the steps of: determining whether, in the entire frequency band of one PSSCH sub-channel, a first DMRS symbol is occupied by a resource region associated with a PSCCH; on the basis of whether the first DMRS symbol is occupied by the resource region associated with the PSCCH, determining a position, of a reference symbol in a PSSCH resource, in which a second SCI is mapped; mapping the second SCI on the basis of the position of the reference symbol in the PSSCH resource; and transmitting the second SCI to a second device via the PSSCH. ## Claims ### Claim 1 A method for a first apparatus to transmit a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second apparatus, the method including: determining whether a first demodulation reference signal (DMRS) symbol among a plurality of DMRS symbols for the PSSCH in at least one PSSCH subchannel related to the PSSCH is occupied by a resource area for the PSCCH in a whole frequency band of one PSSCH subchannel among the at least one PSSCH subchannel; determining a location of a reference symbol in a PSSCH resource in which a second sidelink information (SCI) is mapped based on whether the first DMRS symbol is occupied by the resource area for the PSCCH in the whole frequency band of the one PSSCH subchannel; mapping the second SCI based on the location of the reference symbol in the PSSCH resource; and transmitting the second SCI to the second apparatus through the PSSCH. ### Claim 2 (depends on 1) The method of claim 1, wherein at least one resource element (RE) among a plurality of REs constituting one DMRS symbol among the plurality of DMRS symbols is used for a DMRS transmission. ### Claim 3 (depends on 1) The method of claim 1, wherein the determining the location of the reference symbol in which the second SCI is mapped includes: determining the first DMRS symbol as the reference symbol based on that the first DMRS symbol for the PSSCH is not occupied by the resource area for the PSCCH in the whole frequency band of the one PSSCH subchannel. ### Claim 4 (depends on 1) The method of claim 1, wherein the at least one PSSCH subchannel is two or more PSSCH subchannels in which frequency-division multiplexing is performed, wherein the resource area for the PSCCH occupies a whole frequency band of a single lowest frequency PSSCH subchannel among the two or more PSSCH subchannels, and wherein the determining the location of the reference symbol in which the second SCI is mapped includes: determining the first DMRS symbol as the reference symbol based on that the first DMRS symbol for the PSSCH is not occupied by the resource area for the PSSCH in a whole frequency band of at least one PSSCH subchannel among the two or more PSSCH subchannels, wherein FDM is performed to the at least one PSSCH subchannel with the single lowest frequency PSSCH subchannel. ### Claim 5 (depends on 1) The method of claim 1, wherein the at least one PSSCH subchannel is a single PSSCH subchannel, wherein the resource area for the PSCCH occupies a whole frequency band of the single PSSCH subchannel, and wherein the determining the location of the reference symbol in which the second SCI is mapped includes, determining, the DMRS symbol for the PSSCH which is an initial symbol after an ending symbol of the resource area for the PSCCH, as the reference symbol based on that the first DMRS symbol for the PSSCH is occupied by the resource area for the PSCCH in the whole frequency band of the single PSSCH subchannel. ### Claim 6 (depends on 1) The method of claim 1, wherein the at least one PSSCH subchannel is a single PSSCH subchannel, wherein the resource area for the PSCCH occupies a whole frequency band of the single PSSCH subchannel, and wherein the determining the location of the reference symbol in which the second SCI is mapped includes: determining an initial symbol after an ending symbol of the resource area for the PSCCH as the reference symbol based on that the first DMRS symbol for the PSSCH is occupied by the resource area for the PSCCH in the whole frequency band of the single PSSCH subchannel. ### Claim 7 (depends on 1) The method of claim 1, wherein the PSSCH includes a PSSCH for an N-th slot, a PSSCH for an N+1-th slot and a PSSCH for an N+2-th slot, wherein the PSCCH includes a PSCCH for the N-th slot, a PSCCH for the N+1-th slot and a PSCCH for the N+2-th slot, and wherein the PSSCH for the N-th slot is related to the PSCCH for the N-th slot, and the PSSCH for the N+1-th slot is related to the PSCCH for the N+1-TH slot. ### Claim 8 (depends on 7) The method of claim 7, wherein, whether to transmit an SL channel state information-reference signal (CSI-RS) related to the PSSCH for the N-th slot is controlled by the PSCCH for the N-th slot, wherein, whether to transmit an SL CSI-RS related to the PSSCH for the N+1-th slot is controlled by the PSCCH for the N+1-th slot, and wherein, whether to transmit an SL CSI-RS related to the PSSCH for the N+2-th slot is controlled by the PSCCH for the N+2-th slot. ### Claim 9 (depends on 1) The method of claim 1, wherein the PSCCH includes first SCI, and wherein the first SCI includes at least one of information on a time or frequency resource of the PSSCH, information, modulation and coding scheme (MCS) information required for decoding the PSSCH, or priority information on data on the PSSCH. ### Claim 10 (depends on 1) The method of claim 1, wherein the second SCI includes at least one of information on a source ID or a destination ID for data on the PSSCH, hybrid automatic repeat request (HARQ) process ID information, new data indicator (NDI), a field for CSI-RS transmission or redundancy version (RV). ### Claim 11 A first apparatus for transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second apparatus, the first apparatus comprising: at least one memory to store instructions; at least one transceiver; and at least one processor to connect the at least one memory and the at least one transceiver, wherein the at least one processor is configured to: determine whether a first demodulation reference signal (DMRS) symbol among a plurality of DMRS symbols for the PSSCH in at least one PSSCH subchannel related to the PSSCH is occupied by a resource area for the PSCCH in a whole frequency band of one PSSCH subchannel among the at least one PSSCH subchannel, determine a location of a reference symbol in a PSSCH resource in which a second sidelink information (SCI) is mapped based on whether the first DMRS symbol is occupied by the resource area for the PSCCH in the whole frequency band of the one PSSCH subchannel, map the second SCI based on the location of the reference symbol in the PSSCH resource, and control the at least one transceiver to transmit the second SCI to the second apparatus through the PSSCH. ### Claim 12 (depends on 11) The method of claim 11, wherein at least one resource element (RE) among a plurality of REs constituting one DMRS symbol among the plurality of DMRS symbols is used for DMRS transmission. ### Claim 13 An apparatus for controlling a first terminal, the apparatus comprising: at least one processor; and at least one computer memory that is connected to be executable by the at least one processor and stores instructions, wherein, when the at least one processor executes the instructions, the first terminal is configure to: determine whether a first demodulation reference signal (DMRS) symbol among a plurality of DMRS symbols for the PSSCH in at least one PSSCH subchannel related to the PSSCH is occupied by a resource area for the PSCCH in a whole frequency band of one PSSCH subchannel among the at least one PSSCH subchannel, determine a location of a reference symbol in a PSSCH resource in which a second sidelink information (SCI) is mapped based on whether the first DMRS symbol is occupied by the resource area for the PSCCH in the whole frequency band of the one PSSCH subchannel, map the second SCI based on the location of the reference symbol in the PSSCH resource, and transmit the second SCI to a second terminal through the PSSCH.