# US 2019/0246302 A1 · Method for transmitting and receiving channel measurement information in wireless lan system and device for same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0246302 A1 - Document ID: US20190246302A1 - Status: Published application - Kind: A1 - Application number: 16/332,339 - Filed: 2018-11-26 - Published: 2019-08-08 - Earliest claimed: 2017-12-01 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Sungjin PARK; Jinmin KIM; Sunwoong YUN; JInsoo CHOI - Web page: https://patentgrep.com/patent/US20190246302A1 ## CPC - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 72/542: using measured or perceived quality - H04W 48/16: Discovering, processing access restriction or access information - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present specification discloses a method for transmitting and receiving channel measurement information in a wireless local area network (WLAN) system and a device for the same. More specifically, the present specification describes a method for transmitting and receiving channel measurement information to support a time division duplex (TDD) scheduling scheme, which is a method for transmitting and receiving channel measurement information based on channel measurement per time unit different from that in a conventional method, and a device for the same. ## Claims ### Claim 1 A method for transmitting, by a station (STA), channel measurement information in a wireless local area network (WLAN) system, the method comprising: receiving, from an access point (AP), a measurement request signal to request channel measurement in a unit of time unit (TU)/1024; and transmitting the channel measurement information to the AP, wherein the channel measurement information is measured based on a First Measurement Duration field comprised in the measurement request signal, wherein the First Measurement Duration field comprises information on a requested measurement duration in the unit of the TU/1024. ### Claim 2 (depends on 1) The method of claim 1, wherein the measurement request signal comprises information on that the measurement request signal is a measurement request signal for the channel measurement per the TU/1024. ### Claim 3 (depends on 2) The method of claim 2, wherein the information on that the measurement request signal is the measurement request signal for the channel measurement per the TU/1024 is received through the First Measurement Method field. ### Claim 4 (depends on 3) The method of claim 3, upon receiving the First Measurement Method field associated with an average noise plus interference power indicator (ANIPI) measured during the requested measurement duration, the STA transmits the channel measurement information comprising the ANIPI to the AP. ### Claim 5 (depends on 4) The method of claim 4, wherein the First Measurement Method field associated with the ANIPI is set to 2. ### Claim 6 (depends on 5) The method of claim 5, wherein the channel measurement information comprises: a Second Measurement Method field including information on that the channel measurement information is set to the ANIPI during the requested measurement duration; and a Second Measurement Duration field including information on the requested measurement duration in the unit of the TU/1024. ### Claim 7 (depends on 3) The method of claim 3, wherein upon receiving the First Measurement Method field associated with a received signal-to-noise indicator (RSNI) measured during the requested measurement duration, the STA transmits the channel measurement information comprising the RSNI to the AP. ### Claim 8 (depends on 7) The method of claim 7, wherein the First Measurement Method field associated with the RSNI is set to 3. ### Claim 9 (depends on 8) The method of claim 8, wherein the channel measurement information comprises: a Second Measurement Method field including information on that the channel measurement information is set to the RSNI during the requested measurement duration; and a Second Measurement Duration field including information on the requested measurement duration in the unit of the TU/1024. ### Claim 10 (depends on 1) The method of claim 1, wherein a time interval in which the channel measurement is performed is comprised in a service period (SP) comprised in a data transfer interval (DTI). ### Claim 11 (depends on 1) The method of claim 1, wherein the TU/1024 is equal to 1 microsecond ### Claim 12 A method for receiving, by an access point (AP), channel measurement information from a station (STA) in a wireless local area network (WLAN) system, the method comprising: transmitting a measurement request signal to request channel measurement in a unit of time unit (TU)/1024 to the STA; and receiving channel measurement information from the STA, wherein the channel measurement information is measured based on a First Measurement Duration field comprised in the measurement request signal, wherein the First Measurement Duration field comprises information on a requested measurement duration in the unit of the TU/1024. ### Claim 13 (canceled) ### Claim 14 (depends on 12) The method of claim 12, wherein the measurement request signal comprises a First Measurement Method field including information on an ANIPI or an RSNI as a measurement method during the requested measurement duration in the unit of the TU/1024, and the channel measurement information comprises a Second Measurement Method field including information on that the channel measurement information is set to the ANIPI or the RSNI as the measurement method during the requested measurement duration. ### Claim 15 (depends on 11) The method of claim 11, further comprising: performing, by the AP, time division duplex (TDD) slot scheduling for the STA based on the channel measurement information. ### Claim 16 A communication device for transmitting channel measurement information in a wireless local area network (WLAN) system, the communication device comprising: a memory; and a processor connected to the memory to process a signal transmitted to and received from another station device, wherein the processor is configured to: receive a measurement request signal to request channel measurement in a unit of time unit (TU)/1024 from an access point (AP); and transmit channel measurement information to the AP, and the channel measurement information is measured based on a first measurement duration field comprised in the measurement request signal, wherein the first measurement duration field comprises information on a requested measurement duration in the unit of the TU/1024. ### Claim 17 (canceled)