# US 2023/0422241 A1 · Decoding channel state information report part two > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0422241 A1 - Document ID: US20230422241A1 - Status: Published application - Kind: A1 - Application number: 18/249,798 - Filed: 2020-10-22 - Published: 2023-12-28 - Earliest claimed: 2020-10-22 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (PUBL) - Inventors: Qingchao Liu; Xixian Chen; Pierre Coll - Web page: https://patentgrep.com/patent/US20230422241A1 ## CPC - H04L 1/0026: {Transmission of channel quality indication} - H04W 72/1268: of uplink data flows - H04L 1/0038: {Blind format detection (for detection of modulation format H04L27/0012)} - H04L 1/0072: {Error control for data other than payload data, e.g. control data} - H04L 1/1887: {Scheduling and prioritising arrangements} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - 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 According to some embodiments, a method performed by a network node for decoding a channel state information (CSI) report comprises generating a physical uplink shared channel (PUSCH) scrambling sequence, descrambling a PUSCH using the PUSCH scrambling sequence, decoding a CSI report part one to determine a rank indicator, and determining a location of a CSI report part two. The method further comprises extracting a scrambling sequence from the PUSCH scrambling sequence corresponding to the location of the CSI report part two, generating a CSI part two scrambling sequence based on the PUSCH scrambling sequence and the location of the CSI report part two, and applying the extracted scrambling sequence to the location of the CSI report part two. The method further comprises descrambling the location of the CSI report part two in the PUSCH using the CSI part two scrambling sequence and decoding the CSI part two. ## Claims ### Claim 1 A method performed by a network node for decoding a channel state information (CSI) report, the method comprising: generating a physical uplink shared channel (PUSCH) scrambling sequence for descrambling a PUSCH without accounting for the existence of a CSI report part two; receiving the PUSCH from a wireless device, the PUSCH comprising a CSI report part one and a CSI report part two, wherein the CSI report part one and CSI report part two are encoded independently; descrambling the PUSCH using the PUSCH scrambling sequence; decoding the CSI report part one from the descrambled PUSCH to determine a rank indicator; determining a location of CSI report part two soft bits in the PUSCH based on the rank indicator; extracting a scrambling sequence from the PUSCH scrambling sequence corresponding to the location of the CSI report part two in the PUSCH; generating a CSI part two scrambling sequence based on the PUSCH scrambling sequence and the location of the CSI report part two in the PUSCH with correct x and y locations; applying the extracted scrambling sequence to the location of the CSI report part two soft bits in the PUSCH to undo the incorrect scrambling; descrambling the location of the CSI report part two soft bits in the PUSCH using the CSI part two scrambling sequence; and decoding the CSI part two. ### Claim 2 (depends on 1) The method of claim 1, wherein the decoding of the CSI part two is performed without delaying the decoding of CSI part one or hybrid automatic repeat request (HARQ) feedback. ### Claim 3 (depends on 1) The method of claim 1, wherein the CSI report part two is one bit. ### Claim 4 (depends on 1) The method of claim 1, wherein the CSI report part two is two bits. ### Claim 5 (depends on 1) The method of claim 1, wherein the PUSCH further comprises 1 or 2 bits hybrid automatic repeat request (HARQ) feedback and the PUSCH scrambling sequence accounts for the 1 or 2 bits HARQ feedback. ### Claim 6 (depends on 1) The method of claim 1, wherein the PUSCH further comprises data. ### Claim 7 A network node capable of decoding a channel state information (CSI) report, the network comprising processing circuitry operable to: generate a physical uplink shared channel (PUSCH) scrambling sequence for descrambling a PUSCH without accounting for the existence of a CSI report part two; receive the PUSCH from a wireless device, the PUSCH comprising a CSI report part one and a CSI report part two, wherein the CSI report part one and CSI report part two are encoded independently; descramble the PUSCH using the PUSCH scrambling sequence; decode the CSI report part one from the descrambled PUSCH to determine a rank indicator; determine a location of CSI report part two soft bits in the PUSCH based on the rank indicator; extract a scrambling sequence from the PUSCH scrambling sequence corresponding to the location of the CSI report part two in the PUSCH; generate a CSI part two scrambling sequence based on the PUSCH scrambling sequence and the location of the CSI report part two in the PUSCH with correct x and y locations; apply the extracted scrambling sequence to the location of the CSI report part two soft bits in the PUSCH to undo the incorrect scrambling; descramble the location of the CSI report part two soft bits in the PUSCH using the CSI part two scrambling sequence; and decode the CSI part two. ### Claim 8 (depends on 7) The network node of claim 7, wherein the decoding of the CSI part two is performed without delaying the decoding of CSI part one or hybrid automatic repeat request (HARQ) feedback. ### Claim 9 (depends on 7) The network node of claim 7, wherein the CSI report part two is one bit. ### Claim 10 (depends on 7) The network node of claim 7, wherein the CSI report part two is two bits. ### Claim 11 (depends on 7) The network node of claim 7, wherein the PUSCH further comprises 1 or 2 bits hybrid automatic repeat request (HARQ) feedback and the PUSCH scrambling sequence accounts for the 1 or 2 bits HARQ feedback. ### Claim 12 (depends on 7) The network node of claim 7, wherein the PUSCH further comprises data.