# US 2021/0242960 A1 · Method and apparatus for determining mcs level, and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242960 A1 - Document ID: US20210242960A1 - Status: Published application - Kind: A1 - Application number: 17/258,570 - Filed: 2018-07-20 - Published: 2021-08-05 - Earliest claimed: 2018-07-20 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Yuanyuan LI; Ming ZHANG - Web page: https://patentgrep.com/patent/US20210242960A1 ## CPC - H04L 1/0003: {by switching between different modulation schemes} - H04L 1/0015: {characterised by the adaptation strategy} - H04L 1/0026: {Transmission of channel quality indication} - H04L 5/0057: {Physical resource allocation for CQI} - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 24/02: Arrangements for optimising operational condition - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 64/003: {locating network equipment} - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 84/005: {Moving wireless networks} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04L 27/0008: {arrangements for allowing a transmitter or receiver to use more than one type of modulation (negotiating modulation type for two-way transmission paths H04L5/1453)} - H04W 76/14: Direct-mode setup - 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 determining MCS level is provided. The method can include obtaining by a first terminal, at least one piece of measurement information which includes a measurement position indicating a time-frequency position occupied by information sent via a direct communication interface for transmitting V2X businesses of the Internet of Vehicles, and a measurement value indicating channel quality of a channel for transmitting the information. The method can include obtaining by the first terminal, a target measurement value corresponding to a target measurement position from the at least one piece of measurement information, determining by the first terminal, a quality parameter of a target channel for transmitting the target information according to the target measurement value, and determining by the first terminal, maximum available MCS level corresponding to the target channel according to the quality parameter of the target channel. ## Claims ### Claim 1 A method for determining a Modulation and Coding Scheme (MCS) level, comprising: obtaining by a first terminal, at least one piece of measurement information which includes a measurement position indicating a time-frequency position occupied by information sent via a direct communication interface for transmitting V2X businesses of the Internet of Vehicles, and a measurement value indicating channel quality of a channel for transmitting the information; obtaining by the first terminal, a target measurement value corresponding to a target measurement position from the at least one piece of measurement information, wherein the target measurement position is a measurement position corresponding to target information sent by the first terminal; determining by the first terminal, a quality parameter of a target channel for transmitting the target information based on the target measurement value; and determining by the first terminal, a maximum available MCS level corresponding to the target channel based on the quality parameter of the target channel. ### Claim 2 (depends on 1) The method of claim 1, wherein determining the quality parameter of the target channel for transmitting the target information based on the target measurement value comprises at least one of: determining the quality parameter of the target channel for transmitting the target information based on the target measurement value when the target measurement value is obtained by the first terminal; and determining an integrated measurement value based on at least two target measurement values and determining the quality parameter of the target channel for transmitting the target information based on the integrated measurement value when the at least two target measurement values are obtained by the first terminal. ### Claim 3 (depends on 2) The method of claim 2, wherein determining the integrated measurement value based on the at least two target measurement values comprises: determining a threshold value that meets preset condition as the integrated measurement value based on the at least two target measurement values, wherein the preset condition is that there are p% number of target measurement values greater than the threshold value and there are 1-p% number of target measurement values less than the threshold value, where p is a preset constant. ### Claim 4 (depends on 2) The method of claim 2, wherein determining the integrated measurement value based on the at least two target measurement values, comprises: calculating an average value of the at least two target measurement values and determining the average value as the integrated measurement value. ### Claim 5 (depends on 1) The method of claim 1, wherein obtaining the at least one piece of measurement information comprises: receiving a message sent by a second terminal, the message carrying the measurement information; and obtaining the measurement information from the message. ### Claim 6 (depends on 1) The method of claim 1, comprising: adjusting a maximum available MCS level based on a maximum MCS level, a minimum MCS level, and the maximum available MCS level when the maximum MCS level and the minimum MCS level of a geographic area in which the first terminal is located are obtained by the first terminal. ### Claim 7 (depends on 6) The method of claim 6, wherein adjusting the maximum available MCS level based on the maximum MCS level, the minimum MCS level, and the maximum available MCS level comprises: determining the smaller between the maximum available MCS level before adjustment and the maximum MCS level as the adjusted maximum available MCS level when the maximum available MCS level before adjustment is greater than the minimum MCS level; or determining the minimum MCS level as the adjusted maximum available MCS level when the maximum available MCS level before adjustment is less than or equal to the minimum MCS level. ### Claim 8 (depends on 1) The method of claim 1, comprising: selecting a transport block size (TBS) value closest to data volume of the information to be sent within a range of the maximum available MCS level, based on the data volume of the information to be sent on the target channel; and determining a number of physical carriers for transmitting the information to be sent according to the TBS value. ### Claim 9 (depends on 8) The method of claim 8, wherein determining the number of physical carriers for transmitting the information to be sent based on the TBS value comprises at least one of: selecting the largest number of physical carriers from at least two candidate numbers of physical carriers as the number of physical carriers for transmitting the information to be sent; and selecting the smallest number of physical carriers from at least two candidate numbers of physical carriers as the number of physical carriers for transmitting the information to be sent. ### Claim 10 (depends on 1) The method of claim 1, wherein the quality parameter is a signal-to-noise ratio (SNR) or a signal-to-interference plus noise ratio (SINR). ### Claim 11 An apparatus for determining a Modulation and Coding Scheme (MCS) level that is applied to first terminal, the apparatus comprising: one or more processors; a memory storing instructions executable by the one or more processors; wherein the one or more processors are configured to: obtain at least one piece of measurement information which includes a measurement position indicating a time-frequency position occupied by information sent via a direct communication interface for transmitting V2X businesses of the Internet of Vehicles, and a measurement value indicating channel quality of channel for transmitting the information; obtain a target measurement value corresponding to a target measurement position from the at least one piece of measurement information, wherein the target measurement position is a measurement position corresponding to target information sent by the first terminal; determine a quality parameter of a target channel for transmitting the target information based on the target measurement value; and determine a maximum available MCS level corresponding to the target channel based on the quality parameter of the target channel. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the one or more processors are configured to perform at least one act of: determining the quality parameter of the target channel for transmitting the target information based on the target measurement value when the target measurement value is obtained; and determining an integrated measurement value based on at least two target measurement values and determining the quality parameter of the target channel for transmitting the target information based on the integrated measurement value when the at least two target measurement values are obtained. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the one or more processors are configured to: determine a threshold value that meets a preset condition as the integrated measurement value based on the at least two target measurement values; wherein the preset condition is that there are p% number of target measurement values greater than the threshold value and there are 1-p% number of target measurement values less than the threshold value, where p is a preset constant. ### Claim 14 (depends on 12) The apparatus of claim 12, wherein the one or more processors are configured to: calculate an average value of the at least two target measurement values, and determine the average value as the integrated measurement value. ### Claim 15 (depends on 11) The apparatus of claim 11, wherein the one or more processors are configured to: receive a message sent by a second terminal, the message carrying the measurement information; and obtain the measurement information from the message. ### Claim 16 (depends on 11) The apparatus of claim 11, wherein the one or more processors are configured to: adjust the maximum available MCS level according to a maximum MCS level, a minimum MCS level, and the maximum available MCS level when the maximum MCS level and the minimum MCS level of a geographic area in which the first terminal is located are obtained. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the one or more processors are configured to: determine the smaller value between the maximum available MCS level before adjustment and the maximum MCS level as the adjusted maximum available MCS level when the maximum available MCS level before adjustment is greater than the minimum MCS level; and determine the minimum MCS level as the adjusted maximum available MCS level when the maximum available MCS level before adjustment is less than or equal to the minimum MCS level. ### Claim 18 (depends on 11) The apparatus of claim 11, wherein the one or more processors are configured to: select a TBS value closest to the data amount of the information to be sent within a range of the maximum available MCS level based on the data amount of the information to be sent on the target channel; and determine a number of physical carriers for transmitting the information to be sent according to the TBS value. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the one or more processors are configured to perform at least one act of: selecting the largest number of physical carriers from at least two candidate numbers of physical carriers as the number of physical carriers for transmitting the information to be sent; and selecting the smallest number of physical carriers from at least two candidate numbers of physical carriers as the number of physical carriers for transmitting the information to be sent. ### Claim 20 (canceled) ### Claim 21 (canceled) ### Claim 22 A non-transitory computer-readable storage medium having a computer program stored thereon that, when the program is executed by a processor, causes the processor to implement a method for determining a Modulation and Coding Scheme (MCS) level, and the method comprising: obtaining by a first terminal, at least one piece of measurement information which includes a measurement position indicating a time-frequency position occupied by information sent via a direct communication interface for transmitting V2X businesses of the Internet of Vehicles, and a measurement value indicating channel quality of a channel for transmitting the information; obtaining by the first terminal, a target measurement value corresponding to a target measurement position from the at least one piece of measurement information, wherein the target measurement position is a measurement position corresponding to target information sent by the first terminal; determining by the first terminal, a quality parameter of a target channel for transmitting the target information based on the target measurement value; and determining by the first terminal, a maximum available MCS level corresponding to the target channel based on the quality parameter of the target channel.