# US 12,225,546 B2 · Feedback method and apparatus, terminal device, and network device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,546 B2 - Document ID: US12225546B2 - Status: Granted - Kind: B2 - Application number: 17/839,969 - Filed: 2022-06-14 - Published: 2022-10-27 - Granted: 2025-02-11 - Earliest claimed: 2020-02-13 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Shukun Wang - Web page: https://patentgrep.com/patent/US12225546B2 ## CPC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/1614: {using bitmaps} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract The embodiments of the present disclosure provide a feedback method and apparatus, a terminal device, and a network device. The method includes: receiving, by a terminal device, Downlink Control Information (DCI) transmitted by a network device, the DCI carrying first indication information indicating a state of at least one group of secondary cells (Scells) or at least one Scell; and transmitting, by the terminal device, second indication information to the network device, the second indication information indicating that the terminal device acknowledges receipt of the first indication information. ## Claims ### Claim 1 A feedback method, comprising: receiving, by a terminal device, Downlink Control Information (DCI) transmitted by a network device, the DCI carrying first indication information indicating a state of at least one group of secondary cells (Scells) or at least one Scell; transmitting, by the terminal device, second indication information to the network device, the second indication information indicating that the terminal device acknowledges receipt of the first indication information; and receiving, by the terminal device, second configuration information transmitted by the network device, the second configuration information being used to determine a first active BWP configuration corresponding to the DCI in the first format and a first active BWP configuration corresponding to the DCI in the second format. ### Claim 2 (depends on 1) The method according to claim 1, wherein the state is a first state or a second state; the first state is an active state with a dormancy behavior, and the second state is an active state with a non-dormancy behavior. ### Claim 3 (depends on 2) The method according to claim 2, wherein the first indication information comprises a first bitmap, each bit in the first bitmap corresponding to a group of Scells or an Scell and having a value indicating whether the state of the group of Scells or the Scell corresponding to the bit is the first state or the second state. ### Claim 4 (depends on 1) The method according to claim 1, wherein the second indication information is carried in a Physical Uplink Control Channel (PUCCH). ### Claim 5 (depends on 1) The method according to claim 1, wherein the second indication information further indicates the terminal device having successfully received the first indication information. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: receiving, by the terminal device, first configuration information transmitted by the network device, the first configuration information being used to determine an Scell grouping configuration corresponding to the DCI in a first format and/or an Scell grouping configuration corresponding to the DCI in a second format. ### Claim 7 (depends on 6) The method according to claim 6, wherein the DCI in the first format is DCI corresponding to a WUS, and the DCI in the second format is DCI not corresponding to a WUS. ### Claim 8 A feedback method, comprising: transmitting, by a network device, DCI to a terminal device, the DCI carrying first indication information indicating a state of at least one group of Scells or at least one Scell; receiving, by the network device, second indication information transmitted by the terminal device, the second indication information indicating that the terminal device acknowledges receipt of the first indication information; and transmitting, by the network device, second configuration information to the terminal device, the second configuration information being used to determine a first active BWP configuration corresponding to the DCI in the first format and a first active BWP configuration corresponding to the DCI in the second format. ### Claim 9 (depends on 8) The method according to claim 8, wherein the state is a first state or a second state; the first state is an active state with a dormancy behavior, and the second state is an active state with a non-dormancy behavior. ### Claim 10 (depends on 9) The method according to claim 9, wherein the first indication information comprises a first bitmap, each bit in the first bitmap corresponding to a group of Scells or an Scell and having a value indicating whether the state of the group of Scells or the Scell corresponding to the bit is the first state or the second state. ### Claim 11 (depends on 8) The method according to claim 8, wherein the second indication information is carried in a PUCCH. ### Claim 12 (depends on 8) The method according to claim 8, wherein the second indication information further indicates the terminal device having successfully received the first indication information. ### Claim 13 (depends on 8) The method according to claim 8, further comprising: transmitting, by the network device, first configuration information to the terminal device, the first configuration information being used to determine an Scell grouping configuration corresponding to the DCI in a first format and/or an Scell grouping configuration corresponding to the DCI in a second format. ### Claim 14 (depends on 13) The method according to claim 13, wherein the DCI in the first format is DCI corresponding to a WUS, and the DCI in the second format is DCI not corresponding to a WUS. ### Claim 15 A terminal device, comprising: a processor; and a memory having a computer program stored thereon, wherein the processor is configured to invoke and execute the computer program stored in the memory to perform a feedback method, the method comprising: receiving Downlink Control Information (DCI) transmitted by a network device, the DCI carrying first indication information indicating a state of at least one group of secondary cells (Scells) or at least one Scell; transmitting second indication information to the network device, the second indication information indicating that the terminal device acknowledges receipt of the first indication information; and receiving second configuration information transmitted by the network device, the second configuration information being used to determine a first active BWP configuration corresponding to the DCI in the first format and a first active BWP configuration corresponding to the DCI in the second format. ### Claim 16 (depends on 15) The terminal device according to claim 15, wherein the state is a first state or a second state; the first state is an active state with a dormancy behavior, and the second state is an active state with a non-dormancy behavior. ### Claim 17 (depends on 16) The terminal device according to claim 16, wherein the first indication information comprises a first bitmap, each bit in the first bitmap corresponding to a group of Scells or an Scell and having a value indicating whether the state of the group of Scells or the Scell corresponding to the bit is the first state or the second state. ### Claim 18 (depends on 9) A network device, comprising: a processor; and a memory having a computer program stored thereon, wherein the processor is configured to invoke and execute the computer program stored in the memory to perform the method according to claim 9.