# US 12,009,952 B2 · Method and device for scrambling data > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,009,952 B2 - Document ID: US12009952B2 - Status: Granted - Kind: B2 - Application number: 17/245,494 - Filed: 2021-04-30 - Published: 2021-08-12 - Granted: 2024-06-11 - Earliest claimed: 2018-11-01 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Zhihua Shi; Wenhong Chen; Yun Fang; Zhi Zhang - Web page: https://patentgrep.com/patent/US12009952B2 ## CPC - H04L 25/03866: {using scrambling} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - 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 in embodiments of the present invention are a data scrambling method and device. The data scrambling method includes: a first device determining pieces of scrambling information corresponding to multiple physical channels, wherein different physical channels correspond to different pieces of scrambling information; and the first device performing descrambling of a received physical channel and/or scrambling of a physical channel to be transmitted based on the scrambling information. ## Claims ### Claim 1 A method for scrambling data, comprising: receiving, by a terminal device, third configuration information configured by radio resource control (RRC) from a network device, wherein the third configuration information comprises a plurality of scrambling parameters corresponding to control resource set groups; receiving, by the terminal device, a plurality of downlink control information (DCIs) for scheduling a plurality of physical downlink shared channels (PDSCHs), wherein the plurality of DCIs are located in different search spaces, and each of the search spaces comprises information related to the control resource set groups, and the control resource set groups correspond to scrambling information of the plurality of PDSCHs; determining, by the terminal device, multiple pieces of the scrambling information corresponding to different PDSCHs according to the multiple different search spaces of the received plurality of DCIs; and performing, by the terminal device, descrambling a received PDSCH based on the scrambling parameter determined based on the scrambling information among the plurality of scrambling parameters. ### Claim 2 (depends on 1) The method of claim 1, wherein the scrambling information of the physical downlink shared channel comprises information related to a control resource set group corresponding to a first control resource set associated with a first search space, and the first search space is a search space where downlink control information (DCI) for scheduling a first physical downlink shared channel is located. ### Claim 3 (depends on 2) The method of claim 2, wherein the information related to the control resource set group corresponding to the first control resource set is a scrambling parameter which corresponds to the control resource set group corresponding to the first control resource set, and the scrambling parameter is configured by a network. ### Claim 4 (depends on 2) The method of claim 2, wherein the information related to the control resource set group corresponding to the first control resource set is configured to determine an initial value of a scrambling sequence of the physical downlink shared channel. ### Claim 5 (depends on 1) The method of claim 1, wherein the plurality of physical downlink shared channels belong to a same cell; or the plurality of physical downlink shared channels belong to different cells, respectively; or a part of the plurality of physical downlink shared channels belongs different cells, respectively. ### Claim 6 A device for scrambling data, applied to the first device, the device comprising: a processor, and a memory configured to store a computer program, wherein the processor is configured to call and run the computer program stored in the memory to: receive, by a terminal device, third configuration information configured by radio resource control (RRC) from a network device, wherein the third configuration information comprises a plurality of scrambling parameters corresponding to control resource set groups; receive, by the terminal device, a plurality of downlink control information (DCIs) for scheduling a plurality of physical downlink shared channels (PDSCHs), wherein the plurality of DCIs are located in different search spaces, and each of the search spaces comprises information related to the control resource set groups, and the control resource set groups correspond to scrambling information of the plurality of PDSCHs; determine, by the terminal device, multiple pieces of the scrambling information corresponding to different PDSCHs according to the multiple different search spaces of the received plurality of DCIs; and perform, by the terminal device, descrambling a received PDSCH based on the scrambling parameter determined based on the scrambling information among the plurality of scrambling parameters. ### Claim 7 (depends on 6) The device of claim 6, wherein the scrambling information of the physical downlink shared channel comprises information related to a control resource set group corresponding to a first control resource set associated with a first search space, and the first search space is a search space where downlink control information (DCI) for scheduling a first physical downlink shared channel is located. ### Claim 8 (depends on 7) The device of claim 7, wherein the information related to the control resource set group corresponding to the first control resource set is a scrambling parameter which corresponds to the control resource set group corresponding to the first control resource set, the scrambling parameter is configured by a network. ### Claim 9 (depends on 7) The device of claim 7, wherein the information related to the control resource set group corresponding to the first control resource set is configured to determine an initial value of a scrambling sequence of the physical downlink shared channel. ### Claim 10 (depends on 6) The device of claim 6, wherein the plurality of physical downlink shared channels belong to a same cell; or the plurality of physical downlink shared channels belongs to different cells, respectively; or a part of the plurality of physical downlink shared channels belongs different cells, respectively. ### Claim 11 A method for scrambling data, comprising: transmitting, by a network device, third configuration information configured by radio resource control (RRC) to a terminal device, wherein the third configuration information comprises a plurality of scrambling parameters corresponding to control resource set groups; transmitting, by the network device, a plurality of downlink control information (DCIs) for scheduling a plurality of physical downlink shared channels (PDSCHs), wherein the plurality of DCIs are located in different search spaces, and each of the search spaces comprises information related to the control resource set groups, and the control resource set groups correspond to scrambling information of the plurality of PDSCHs; wherein multiple pieces of the scrambling information corresponding to different PDSCHs are determined according to the multiple different search spaces of the received plurality of DCIs; and a received PDSCH is descrambled based on the scrambling parameter determined based on the scrambling information among the plurality of scrambling parameters. ### Claim 12 (depends on 11) The method of claim 11, wherein the scrambling information of the physical downlink shared channel comprises information related to a control resource set group corresponding to a first control resource set associated with a first search space, and the first search space is a search space where downlink control information (DCI) for scheduling a first physical downlink shared channel is located. ### Claim 13 (depends on 12) The method of claim 12, wherein the information related to the control resource set group corresponding to the first control resource set is a scrambling parameter which corresponds to the control resource set group corresponding to the first control resource set, and the scrambling parameter is configured by a network. ### Claim 14 (depends on 12) The method of claim 12, wherein the information related to the control resource set group corresponding to the first control resource set is configured to determine an initial value of a scrambling sequence of the physical downlink shared channel. ### Claim 15 (depends on 11) The method of claim 11, wherein the plurality of physical downlink shared channels belong to a same cell; or the plurality of physical downlink shared channels belong to different cells, respectively; or a part of the plurality of physical downlink shared channels belongs different cells, respectively. ### Claim 16 A device for scrambling data, applied to the first device, the device comprising: a processor, and a memory configured to store a computer program, wherein the processor is configured to call and run the computer program stored in the memory to: transmit, by a network device, third configuration information configured by radio resource control (RRC) to a terminal device, wherein the third configuration information comprises a plurality of scrambling parameters corresponding to control resource set groups; transmit, by the network device, a plurality of downlink control information (DCIs) for scheduling a plurality of physical downlink shared channels (PDSCHs), wherein the plurality of DCIs are located in different search spaces, and each of the search spaces comprises information related to the control resource set groups, and the control resource set groups correspond to scrambling information of the plurality of PDSCHs; wherein multiple pieces of the scrambling information corresponding to different PDSCHs are determined according to the multiple different search spaces of the received plurality of DCIs; and a received PDSCH is descrambled based on the scrambling parameter determined based on the scrambling information among the plurality of scrambling parameters. ### Claim 17 (depends on 16) The device of claim 16, wherein the scrambling information of the physical downlink shared channel comprises information related to a control resource set group corresponding to a first control resource set associated with a first search space, and the first search space is a search space where downlink control information (DCI) for scheduling a first physical downlink shared channel is located. ### Claim 18 (depends on 17) The device of claim 17, wherein the information related to the control resource set group corresponding to the first control resource set is a scrambling parameter which corresponds to the control resource set group corresponding to the first control resource set, the scrambling parameter is configured by a network. ### Claim 19 (depends on 17) The device of claim 17, wherein the information related to the control resource set group corresponding to the first control resource set is configured to determine an initial value of a scrambling sequence of the physical downlink shared channel. ### Claim 20 (depends on 16) The device of claim 16, wherein the plurality of physical downlink shared channels belong to a same cell; or the plurality of physical downlink shared channels belongs to different cells, respectively; or a part of the plurality of physical downlink shared channels belongs different cells, respectively.