# US 12,120,064 B2 · Method and device for transmitting control information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,064 B2 - Document ID: US12120064B2 - Status: Granted - Kind: B2 - Application number: 17/613,901 - Filed: 2019-05-24 - Published: 2022-08-18 - Granted: 2024-10-15 - Earliest claimed: 2019-05-24 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Qun Zhao - Web page: https://patentgrep.com/patent/US12120064B2 ## CPC - H04L 5/0092: {Indication of how the channel is divided} - H04L 1/0038: {Blind format detection (for detection of modulation format H04L27/0012)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/20: Control channels or signalling for resource management - H04L 1/1896: {ARQ related signaling} - 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 A method for transmitting control information, for a control information transmitting terminal. The control information includes a first part of control information and a second part of control information. The method includes the following. The first part of control information is transmitted to a control information receiving terminal through a first physical layer channel occupying a first time-frequency resource. First indication information is transmitted to the control information receiving terminal, the first indication information being configured to indicate a size of a second time-frequency resource and the second time-frequency resource being configured to be occupied when transmitting the second part of control information. The second part of control information is transmitted to the control information receiving terminal through a second physical layer channel occupying the second time-frequency resource. ## Claims ### Claim 1 A method for transmitting control information, for a control information transmitting terminal, the control information comprising a first part of control information and a second part of control information; the method comprising: transmitting the first part of control information to a control information receiving terminal through a first physical layer channel occupying a first time-frequency resource; transmitting first indication information to the control information receiving terminal, the first indication information being configured to indicate a size of a second time-frequency resource and the second time-frequency resource being configured to be occupied when transmitting the second part of control information; and transmitting the second part of control information to the control information receiving terminal through a second physical layer channel occupying the second time-frequency resource, wherein the method further comprises: calculating the size of the second time-frequency resource based on a first parameter; and determining the first indication information based on a value of the first parameter, wherein the second physical layer channel is a physical layer channel for data transmission; and the first parameter includes a parameter for adjusting a ratio of coding efficiencies of the second part of control information and data information. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein transmitting the first indication information to the control information receiving terminal comprises: adding the first indication information into the first part of control information; and transmitting the first part of control information carrying the first indication information to the control information receiving terminal through the first physical layer channel occupying the first time-frequency resource. ### Claim 3 (depends on 1) The method as claimed in claim 1, wherein transmitting the first indication information to the control information receiving terminal comprises: determining a physical layer parameter corresponding to the first indication information, wherein different first indication information correspond to different physical layer parameters; and transmitting the first physical layer channel that carries the first part of control information to the control information receiving terminal using the corresponding physical layer parameter. ### Claim 4 (depends on 3) The method as claimed in claim 3, wherein the physical layer parameter comprises at least one of: a demodulation reference signal (DMRS) sequence of the first physical layer channel for transmitting the first part of control information; and a transmission format used when transmitting the first part of control information. ### Claim 5 A method for transmitting control information, for a control information receiving terminal, the control information comprising a first part of control information and a second part of control information; the method comprising: receiving, on a first time-frequency resource, the first part of control information from a control information transmitting terminal through a first physical layer channel; receiving first indication information from the control information transmitting terminal, the first indication information being configured to indicate a size of a second time-frequency resource and the second time-frequency resource being configured to be occupied when transmitting the second part of control information; and receiving, on the second time-frequency resource, the second part of control information from the control information transmitting terminal through a second physical layer channel; wherein the method further comprises: determining a value of a first parameter based on the first indication information; and calculating the size of the second time-frequency resource based on the first parameter, wherein the second physical layer channel is a physical layer channel for data transmission; and the first parameter includes a parameter for adjusting a ratio of coding efficiencies of the second part of control information and data information. ### Claim 6 (depends on 5) The method as claimed in claim 5, wherein the first part of control information comprises the first indication information; and receiving the first indication information from the control information transmitting terminal comprises: obtaining the first indication information from the first part of control information. ### Claim 7 (depends on 5) The method as claimed in claim 5, wherein receiving the first indication information from the control information transmitting terminal comprises: detecting a physical layer parameter used by the first physical layer channel carrying the first part of control information; and determining the first indication information based on the physical layer parameter used, wherein different physical layer parameters correspond to different first indication information. ### Claim 8 (depends on 7) The method as claimed in claim 7, wherein the physical layer parameter comprises at least one of: a demodulation reference signal (DMRS) sequence of the first physical layer channel for transmitting the first part of control information; and a transmission format used when transmitting the first part of control information. ### Claim 9 A device for transmitting control information, for a control information transmitting terminal, the control information comprising a first part of control information and a second part of control information; the device comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to: transmit the first part of control information to a control information receiving terminal through a first physical layer channel occupying a first time-frequency resource; transmit first indication information to the control information receiving terminal, the first indication information being configured to indicate a size of a second time-frequency resource and the second time-frequency resource being configured to be occupied when transmitting the second part of control information; and transmit the second part of control information to the control information receiving terminal through a second physical layer channel occupying the second time-frequency resource, wherein the processor is further configured to: calculate the size of the second time-frequency resource based on a first parameter; and determine the first indication information based on a value of the first parameter, wherein the second physical layer channel is a physical layer channel for data transmission; and the first parameter includes a parameter for adjusting a ratio of coding efficiencies of the second part of control information and data information. ### Claim 10 A device for transmitting control information, for a control information receiving terminal, the control information comprising a first part of control information and a second part of control information; the device comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to: receive, on a first time-frequency resource, the first part of control information from a control information transmitting terminal through a first physical layer channel; receive first indication information from the control information transmitting terminal, the first indication information being configured to indicate a size of a second time-frequency resource and the second time-frequency resource being configured to be occupied when transmitting the second part of control information; and receive, on the second time-frequency resource, the second part of control information from the control information transmitting terminal through a second physical layer channel, wherein the processor is further configured to: determine a value of a first parameter based on the first indication information; and calculate the size of the second time-frequency resource based on the first parameter, wherein the second physical layer channel is a physical layer channel for data transmission; and the first parameter includes a parameter for adjusting a ratio of coding efficiencies of the second part of control information and data information. ### Claim 11 (depends on 1) The method as claimed in claim 1, wherein the first physical layer channel is physical sidelink control channel (PSCCH); the second physical layer channel is physical sidelink shared channel (PSSCH). ### Claim 12 (depends on 1) The method as claimed in claim 1, wherein the control information transmitting terminal connects with the control information receiving terminal through sidelink. ### Claim 13 (depends on 1) The method as claimed in claim 1, wherein the second part of control information comprises hybrid automatic repeat request (HARQ) related information. ### Claim 14 (depends on 5) The method as claimed in claim 5, wherein the first physical layer channel is physical sidelink control channel (PSCCH); the second physical layer channel is physical sidelink shared channel (PSSCH). ### Claim 15 (depends on 5) The method as claimed in claim 5, wherein the control information transmitting terminal connects with the control information receiving terminal through sidelink. ### Claim 16 (depends on 5) The method as claimed in claim 5, wherein the second part of control information comprises hybrid automatic repeat request (HARQ) related information. ### Claim 17 (depends on 1) The method as claimed in claim 1, wherein determining the first indication information based on the value of the first parameter comprises: receiving downlink signaling configuration of a base station and determining the first indication information using the value of the first parameter indicated in the downlink signaling configuration, or, determining the first indication information using the value of the first parameter indicated in pre-configuration. ### Claim 18 (depends on 1) The method as claimed in claim 1, wherein determining the first indication information based on the value of the first parameter, comprises: receiving downlink signaling configuration of a base station, obtaining a first mapping relationship between the value of the first parameter and the first indication information, and determining the first indication information using the first mapping relationship, or, obtaining a second mapping relationship between the value of the first parameter and the first indication information in pre-configuration and determining the first indication information using the second mapping relationship.