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公开(公告)号：US11284345B2
公开(公告)日：2022-03-22
申请号：US16870402
申请日：2020-05-08
Inventor： Jae Seung Lee , Hyoung Jin Kwon , Min ho Cheong , Hee Jung Yu , Sok Kyu Lee
Abstract: An operating mode change method of a wireless local area network (WLAN) system according to an exemplary embodiment includes transmitting, by a station (STA) to an access point (AP), an operating mode change request frame comprising at least one of information on a change of a traffic indication map (TIM) mode, a request for a change of a power save parameter, and information on a change of a service type of the STA, receiving, from the AP, an operating mode change response frame comprising at least one of a TIM mode allowed by the AP, a reallocated association identification (AID), and information on a changed power save parameter, and performing at least one of the change of the TIM mode and the change of the power save parameter based on the information included in the operating mode change.
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公开(公告)号：US11172434B2
公开(公告)日：2021-11-09
申请号：US16431487
申请日：2019-06-04
Inventor： Jae Seung Lee , Min ho Cheong , Je Hun Lee , Ja Beom Gu , Jae Woo Park , Sok Kyu Lee
Abstract: A scanning method in a wireless local area network (WLAN) system is provided. The scanning method includes transmitting, by a station, a probe request frame and receiving, by the station, a probe response frame from an access point (AP). The AP determines whether to transmit the probe response frame in response to the probe request frame using information indicated by the probe request frame.
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公开(公告)号：US10939452B2
公开(公告)日：2021-03-02
申请号：US16669074
申请日：2019-10-30
Inventor： Jae Seung Lee , Min ho Cheong , Hyoung Jin Kwon , Sok Kyu Lee , Wun Cheol Jeong , Chang Sub Shin , Cheol Sig Pyo
Abstract: Provided are a method of allocating resources in a wireless local area network (WLAN) system and the WLAN system including an access point (AP) to allocate a resource for communication between a relay and a station associated with the relay, the relay to allocate a restricted access window (RAW) or a slot for communication with a station based on the allocated resource, and the station to communicate with the relay based on the allocated RAW or the allocated slot.
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公开(公告)号：US10687357B2
公开(公告)日：2020-06-16
申请号：US16245179
申请日：2019-01-10
Inventor： Min ho Cheong , Hyoung Jin Kwon , Jae Seung Lee , Jae Woo Park , Sok Kyu Lee
Abstract: A channel access method and apparatus are disclosed. The channel access method by an access point (AP) having a sector antenna in a wireless local access network (WLAN), may include transmitting a sector beacon with respect to any one sector among a plurality of sectors, transmitting and receiving data with at least one station in any one sector during a pre-scheduled sector interval, sequentially performing transmission of the sector beacon and transmission and reception of the data with respect to remaining sectors of the plurality of sectors excluding the any one sector, transmitting an omni beacon with respect to all of the plurality of sectors, and transmitting and receiving data with respect to at least one station of the plurality of sectors during a pre-scheduled Basic Service Set (BSS) interval.
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公开(公告)号：US10342011B2
公开(公告)日：2019-07-02
申请号：US15706159
申请日：2017-09-15
Inventor： Min Ho Cheong , Hyoung Jin Kwon , Jae Seung Lee , Jae Woo Park , Sok Kyu Lee
Abstract: Provided is a method and apparatus for allocating resources in a wireless local area network (WLAN) system, the method including determining a restricted access bandwidth (RAB) interval based on at least a bandwidth or a partial bandwidth among a plurality of bandwidths, and setting a restricted access window (RAW) of a time domain based on the RAB interval.
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Patent Agency Ranking
公开(公告)号：US10250304B2
公开(公告)日：2019-04-02
申请号：US15649887
申请日：2017-07-14
Inventor： Jee Yon Choi , Hyoung Jin Kwon , Je Hun Lee , Sok Kyu Lee
IPC: H04W4/00 , H04B7/0452 , H04B7/0404 , H04L1/16 , H04W74/06 , H04W72/04 , H04W88/02
Abstract: Provided is a method of transmitting and receiving a frame for a multi-user multiple-input and multiple-output (MU-MIMO) communication in an access point (AP), the method including determining at least one transmission station (STA), transmitting, to the transmission STA, an uplink multi-user poll (UL MU poll) frame requesting a data frame, receiving the data frame from the at least one transmission STA simultaneously, and transmitting an acknowledgement (ACK) frame to the at least one transmission STA in response to the receiving.
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公开(公告)号：US10165584B2
公开(公告)日：2018-12-25
申请号：US15025879
申请日：2014-11-04
Inventor： Hyoung Jin Kwon , Sok Kyu Lee , Jae Seung Lee , Min Ho Cheong
IPC: H04W72/12 , H04L25/02 , H04L5/00 , H04B7/0452 , H04L27/26 , H04W84/12 , H04B7/0417
Abstract: Disclosed are a wireless communication method, and an access point and a station which perform the wireless communication method. A wireless communication method performed by an access point according to an embodiment may include performing channel sounding on a plurality of subchannels, identifying subchannels selected by stations among the subchannels, scheduling communications between the AP and the stations based on the selected subchannels, and transmitting a data frame to the stations through the subchannels based on a scheduling result.
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68.发明授权公开(公告)号：US10148478B2
公开(公告)日：2018-12-04
申请号：US14581967
申请日：2014-12-23
Inventor： Chang Wahn Yu , Hee Soo Lee , Sok Kyu Lee
Abstract: A method and apparatus for estimating a channel in a wireless local area network (WLAN) are provided. A channel estimation apparatus may include a channel estimation information combiner to combine at least one channel estimation information based on a difference between cyclic delay diversity (CDD) values, and a phase applier to generate a first phase value and to apply the first phase value to the combined channel estimation information.
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公开(公告)号：US10070448B2
公开(公告)日：2018-09-04
申请号：US15603260
申请日：2017-05-23
Inventor： Jae Seung Lee , Min Ho Cheong , Hyoung Jin Kwon , Sok Kyu Lee , Wun Cheol Jeong , Chang Sub Shin , Cheol Sig Pyo
IPC: G08C17/00 , H04W72/08 , H04W72/04 , H04B7/155 , H04W64/00 , H04W52/02 , H04W74/00 , H04W84/04 , H04W84/12
Abstract: Provided are a method of allocating resources in a wireless local area network (WLAN) system and the WLAN system including an access point (AP) to allocate a resource for communication between a relay and a station associated with the relay, the relay to allocate a restricted access window (RAW) or a slot for communication with a station based on the allocated resource, and the station to communicate with the relay based on the allocated RAW or the allocated slot.
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70.发明授权公开(公告)号：US10045256B2
公开(公告)日：2018-08-07
申请号：US14444911
申请日：2014-07-28
Inventor： Min Ho Cheong , Sok Kyu Lee
Abstract: A wireless device of transmitting a data frame in a WLAN is provided. The wireless device includes: a MAC unit generating a data frame; a PHY unit transmitting a wireless signal of the data frame; and a processor being operably coupled to the MAC unit and the PHY unit and controlling a set of TXVECTOR parameters. The processor is configured for: generating the data frame, the data frame including a data field having a service field and a very high throughput signal information (VHT-SIG-B); and transmitting a wireless signal of the data frame via a operating channel bandwidth. The data field is scrambled with a scrambling sequence, the scrambling sequence is generated based on a initial scrambling sequence and a generator polynomial. The service field is determined based on the set of TXVECTOR parameters, the TXVECTOR parameters including an control information for the service field.
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