公开(公告)号：US11290249B2

公开(公告)日：2022-03-29

申请号：US16959107

申请日：2018-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Saehee Bang ,  Jinmin Kim ,  Kiseon Ryu ,  Jinsoo Choi

IPC: H04L5/14 ,  H04W72/04 ,  H04W74/04

Abstract: A method for supporting TDD in a wireless LAN system of the present specification comprises the steps of: transmitting, by a first wireless terminal, a first frame including a first information element defining a structure of a TDD service period (SP) for TDD channel access, wherein the structure of the TDD SP includes a plurality of consecutive and adjacent TDD intervals, and each of the plurality of TDD intervals includes at least one TDD slot; and transmitting, by the first wireless terminal, a second frame including a second information element defining a schedule for TDD channel access of a second wireless terminal within the TDD SP, to the second wireless terminal, wherein the second information element includes: first information defining an operation type of each of a plurality of TDD slots included in at least one TDD interval for the second wireless terminal within the TDD SP; and second information associated with a duration to which the second information element is applied, and the plurality of TDD slots defined by the first information are repeated during the duration.

公开(公告)号：US11184775B2

公开(公告)日：2021-11-23

申请号：US16476834

申请日：2018-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Saehee Bang ,  Jinmin Kim ,  Jinsoo Choi

IPC: H04W16/02 ,  H04W16/28 ,  H04W84/12

Abstract: A method for transmitting a frame on the basis of spatial reuse performed by an SR STA including a plurality of directional antenna modules in a wireless LAN system according to one embodiment of the present invention comprises the steps of: performing a legacy backoff procedure by counting down a first backoff value set on the basis of a set of legacy EDCA parameters in order to transmit an omnidirectional frame, wherein the set of the legacy EDCA parameters includes a legacy CWmin value and a legacy CWmax value corresponding to each of a plurality of ACs; performing an SR backoff procedure by counting down a second backoff value set on the basis of a set of SR EDCA parameters in order to transmit a directional frame when an interference frame that is not intended to be received by an SR STA is received, wherein the set of the SR EDCA parameters includes an SR_CWmax value corresponding to each of the plurality of ACs, and the SR_CWmax value is set to a value smaller than the legacy CWmax value; and transmitting the directional frame when the SR backoff procedure is completed.

公开(公告)号：US11082887B2

公开(公告)日：2021-08-03

申请号：US16489287

申请日：2018-02-27

Applicant: LG ELECTRONICS INC.

Inventor： Saehee Bang ,  Jeongki Kim ,  Jinmin Kim ,  Jinsoo Choi

IPC: H04W28/04 ,  H04L1/16 ,  H04L1/18 ,  H04W80/02 ,  H04W80/04 ,  H04W84/12

Abstract: A method for frame retransmission performed by a first wireless terminal in a wireless LAN system comprises the steps of: dividing an MSDU received from an upper layer of a first wireless terminal into multiple MPDUs; transmitting the multiple divided MPDUs to a second wireless terminal, wherein each of the multiple divided MPDUs includes division information and transmission sequence information; if an ACK frame for notifying of successful reception of the multiple divided MPDUs is not received until a preset time elapses, transmitting, to the second wireless terminal, a BAR frame for determining at least one MPDU to be retransmitted by the first wireless terminal among the multiple divided MPDUs; receiving a BA frame from the second wireless terminal in response to the BAR frame, wherein the BA frame includes frame information indicating a last MPDU successfully received by the second wireless terminal among the multiple divided MPDUs; and performing a retransmission procedure on the basis of the frame information.