# US 2019/0174442 A1 · Method for transmitting frame in wireless lan system and wireless terminal using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174442 A1 - Document ID: US20190174442A1 - Status: Published application - Kind: A1 - Application number: 16/321,820 - Filed: 2017-05-17 - Published: 2019-06-06 - Earliest claimed: 2016-08-21 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Kiseon RYU; Jeongki KIM; Hyunhee PARK; Suhwook KIM; Hangyu CHO - Web page: https://patentgrep.com/patent/US20190174442A1 ## CPC - H04W 56/0005: {synchronizing of arrival of multiple uplinks} - H04L 27/2666: {Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length} - H04W 28/26: Resource reservation - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 74/00: Wireless channel access - H04W 74/04: Scheduled access (hybrid access H04W74/02) - H04W 74/08: Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W 74/085: {collision avoidance} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 74/002: {Transmission of channel access control information} - 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) ## Abstract A method for transmitting a frame in a wireless LAN system according to the present embodiment comprises: a step of determining whether to transmit a first frame to an AP through an EDCA by comparing a time parameter indicating the time used for transmission of a wireless terminal with a predetermined allowable time; a step of summing up, to the time parameter, a first required time for transmission of the first frame; a step of receiving, from the AP, a trigger frame for multi-user uplink transmission; and a step of performing data processing for a second frame transmitted in response to the trigger frame, wherein a second required time for transmission of the second frame is not summed up to the time parameter. ## Claims ### Claim 1 A method for transmitting a frame in a wireless local area network (WLAN) system, the method comprising: in order to transmit a first frame belonging to a first access category among a plurality of access categories, comparing, by a first wireless device, a first time parameter related to an admitted time that is predetermined for the first access category with a second time parameter related to an amount of time having been used for transmission of frames belonging to the first access category; based on the comparison result, transmitting, by the first wireless device, the first frame to a second wireless device; after the transmission of the first frame, updating, by the first wireless device, the second time parameter, wherein the updated second time parameter corresponds to a sum of the second time parameter and a first required time required for transmitting the first frame; and when a trigger frame for a multi-user uplink transmission is received from the second wireless device, performing, by the first wireless device, data processing for a second frame that is to be transmitted as a response to the trigger frame, wherein a second required time required for transmitting the second frame is not added to the updated second time parameter. ### Claim 2 (depends on 1) The method of claim 1, wherein, based upon the comparison result, when the second time parameter exceeds the first time parameter, the first frame is not transmitted to the second wireless device, and wherein, based upon the comparison result, when the second time parameter does not exceed the first time parameter, the first frame is transmitted to the second wireless device. ### Claim 3 (depends on 1) The method of claim 1, wherein the first wireless device corresponds to a device having acquired a transmission opportunity (TXOP) for a wireless channel based on a contention for the transmission of the first frame. ### Claim 4 (depends on 1) The method of claim 1, wherein the second frame is transmitted regardless of whether or not the updated second time parameter exceeds the first time parameter. ### Claim 5 (depends on 1) The method of claim 1, wherein, when an add traffic stream (ADDTS) request frame is transmitted by the first wireless device to the second wireless device for session formation, the admitted time is configured based on a traffic specification (TSPEC) element being included in an ADDTS response frame, the ADDTS response frame being received from the second wireless device as a response to the ADDTS request frame. ### Claim 6 (depends on 1) The method of claim 1, wherein the first required time corresponds to a sum of a first processing time required for transmitting a sequence included in the first frame, a second processing time required for receiving a first acknowledgement frame for the first frame, and a Short-Inter Frame Spacing (SIFS). ### Claim 7 (depends on 1) The method of claim 1, wherein the first required time is added to the second time parameter regardless of whether or not an acknowledgement frame is received from the second wireless device as a response to the transmission of the first frame. ### Claim 8 (canceled) ### Claim 9 (depends on 1) The method of claim 1, wherein the second requested time corresponds to a sum of a third processing time required for transmitting a sequence included in the second frame, a SIFS, and a fourth processing time required for receiving a second acknowledgement frame for the second time. ### Claim 10 A first wireless device using a method for transmitting a frame in a wireless local area network (WLAN) system, the first wireless device comprising: a radio frequency (RF) unit transceiving radio signals; and a processor being operatively connected to the RF unit, wherein the processor is configured: in order to transmit a first frame belonging to a first access category among a plurality of access categories, to compare a first time parameter related to an admitted time that is predetermined for the first access category with a second time parameter related to an amount of time having been used for transmission of frames belonging to the first access category, to transmit the first frame to a second wireless device based on the comparison result, to update the second time parameter after the transmission of the first frame, wherein the updated second time parameter corresponds to a sum of a second time parameter and a first required time for transmitting the first frame, and when a trigger frame for a multi-user uplink transmission is received from the second wireless device, to perform data processing for a second frame that is to be transmitted as a response to the trigger frame, wherein a second required time required for transmitting the second frame is not added to the updated second time parameter. ### Claim 11 (depends on 10) The first wireless device of claim 10, wherein, based upon the comparison result, when the second time parameter exceeds the first time parameter, the first frame is not transmitted to the second wireless device, and wherein, based upon the comparison result, when the second time parameter does not exceed the first time parameter, the first frame is transmitted to the second wireless device. ### Claim 12 (depends on 10) The first wireless device of claim 10, wherein the first wireless device corresponds to a device having acquired a transmission opportunity (TXOP) for a wireless channel based on a contention for the transmission of the first frame. ### Claim 13 (depends on 10) The first wireless device of claim 10, wherein the second frame is transmitted regardless of whether or not the updated second time parameter exceeds the first time parameter. ### Claim 14 (depends on 10) The first wireless device of claim 10, wherein, when an add traffic stream (ADDTS) request frame is transmitted by the first wireless device to the second wireless device for session information, the admitted time is configured based on a traffic specification (TSPEC) element being included in an ADDTS response time, the ADDTS response frame being received from the second wireless device as a response to the ADDTS request frame. ### Claim 15 (depends on 10) The first wireless device of claim 10, wherein the first required time corresponds to a sum of a first processing time required for transmitting a sequence included in the first frame, a second processing time required for receiving a first acknowledgement frame for the first time, and a Short-Inter Frame Spacing (SIFS). ### Claim 16 (depends on 10) The first wireless device of claim 10, wherein the first required time is added to the second time parameter regardless of whether or not an acknowledgement frame is received from the second wireless device as a response to the transmission of the first frame.