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公开(公告)号：US20230091075A1
公开(公告)日：2023-03-23
申请号：US18051802
申请日：2022-11-01
Inventor： Yu Ro LEE , Jae Woo PARK , Jae Seung LEE , Jee Yon CHOI , II Gyu KIM , Seung Chan BANG
IPC: H04B7/0452 , H04W72/04 , H04L5/00 , H04B7/06
Abstract: A wireless communication method and apparatus in a wireless local area network (WLAN) system are disclosed. A wireless communication method according to one embodiment may include generating a high-efficiency Wi-Fi (HEW) frame including at least one of an HEW-SIG-A field and an HEW-SIG-B field which include channel information for communications according to an Orthogonal Frequency-Division Multiple Access (OFDMA) mode, and transmitting the generated HEW frame to a reception apparatus.
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公开(公告)号：US20230038795A1
公开(公告)日：2023-02-09
申请号：US17874427
申请日：2022-07-27
Inventor： Hyun Seo PARK , Yong Jin KWON , Yun Joo KIM , Eunkyung KIM , An Seok LEE , Yu Ro LEE , Heesoo LEE
Abstract: An operation method of a terminal in a communication system may comprise: receiving a first occurrence reporting condition of a handover problem from a source base station; performing a handover from the source base station to a target base station; identifying whether a handover problem occurs based on the first occurrence reporting condition while performing the handover; and in response to identifying that a handover problem occurs, transmitting information indicating the occurrence of the handover problem to the target base station.
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73.发明申请公开(公告)号：US20200336960A1
公开(公告)日：2020-10-22
申请号：US16848383
申请日：2020-04-14
Inventor： Hyun Seo PARK , Yun Joo KIM , Eunkyung KIM , Tae Joong KIM , An Seok LEE , Yu Ro LEE , Sung Cheol CHANG
Abstract: An operation method of a terminal performing handover in a mobile communication system may comprise transmitting packet data convergence protocol (PDCP) downlink reception status information of the terminal and information on a target base station to a source base station; receiving downlink data from a user plane function (UPF) via the source base station based on a first tunnel configured between the source base station and the UPF; receiving downlink data from the UPF via the target base station based on a second tunnel configured by the UPF between the target base station and the UPF by using the PDCP downlink reception status information and the information on the target base station, which are transferred from the source base station; and discarding duplicated-received protocol data units (PDUs) from the source base station and the target base station, and reordering remaining PDUs.
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公开(公告)号：US20180352601A1
公开(公告)日：2018-12-06
申请号：US15994027
申请日：2018-05-31
Inventor： Hyun Seo PARK , Eun Kyung KIM , Tae Joong KIM , An Seok LEE , Yu Ro LEE , Hyun LEE , Hee Soo LEE
Abstract: Disclosed is an operation method of a terminal in a mobile communication system. The operation method may comprise starting a T310 timer when a physical layer out-of-synchronization occurs in a PDCCH transmitted from a first base station; confirming that an RLF occurs when the PDCCH does not transition to a physical layer in-sync state until the T310 timer expires; performing re-establishment of PDCP layers and RLC layers for all radio bearers except an SRB0; suspending all the radio bearers except the SRB0; performing RRC connection re-establishment with a second base station selected through cell selection; and resuming all the radio bearers when the RRC connection re-establishment with the second base station succeeds.
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公开(公告)号：US20180331796A1
公开(公告)日：2018-11-15
申请号：US16042838
申请日：2018-07-23
Inventor： Yu Ro LEE , Jae Woo PARK , Jae Seung LEE , Jee Yon CHOI , Il Gyu KIM , Seung Chan BANG
IPC: H04L5/00 , H04L27/26 , H04B17/336 , H04B7/06 , H04B7/0452 , H04B7/024
CPC classification number: H04L5/005 , H04B7/024 , H04B7/0452 , H04B7/0617 , H04B17/336 , H04L5/0023 , H04L5/0032 , H04L5/0073 , H04L27/2613
Abstract: Disclosed are a frame transmission method and a communication device performing the same. The communication device may transmit a null data packet (NDP)-announcement (NDP-A) including information on a plurality of communication devices participating in interference alignment and transmit an NDP including a common signal field and a common training field commonly applied to the plurality of communication devices.
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Patent Agency Ranking
76.发明申请公开(公告)号：US20180213547A1
公开(公告)日：2018-07-26
申请号：US15870833
申请日：2018-01-12
Inventor： Hyung Sik JU , Dong Hyuk GWAK , Seon Ae KIM , Yu Ro LEE
CPC classification number: H04W72/1242 , H04L5/0037 , H04L5/0044 , H04L5/0069 , H04L5/14 , H04W72/042 , H04W72/044 , H04W72/048 , H04W72/121 , H04W72/1226
Abstract: An operation method of a base station in an IFD scheme may comprise receiving position information of each of a plurality of downlink (DL) terminals and a plurality of uplink (UL) terminals; determining a guard zone corresponding to each of the plurality of DL terminals based on the position information of each of the plurality of DL terminals; determining whether at least one UL terminal is located in the guard zone based on the position information of each of the plurality of UL terminals; determining a scheduling priority of each of the plurality of DL terminals according to whether at least one UL terminal is located in the guard zone; generating DL control information including frequency-time resource allocation information and interference control information based on the determined scheduling priority; and transmitting data signals and the DL control information to the plurality of DL terminals.
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公开(公告)号：US20170149542A1
公开(公告)日：2017-05-25
申请号：US15360442
申请日：2016-11-23
Inventor： Yu Ro LEE , Kwang Jae LIM , Sung Cheol CHANG
CPC classification number: H04L5/0044 , H04B1/713 , H04L5/0012 , H04L5/0048 , H04L5/0051 , H04W72/0413 , H04W72/1268
Abstract: Disclosed herein are a method and an apparatus for transmitting an uplink signal. The method for transmitting an uplink signal includes: transmitting an uplink data in at least one symbol included in a short transmit time interval (sTTI) including 7 symbols or less; and transmitting a demodulation reference signal (DMRS) for the uplink data through an even-numbered subcarrier or an odd-numbered subcarrier in one symbol in which the uplink data is not transmitted, among the symbols included in the sTTI.
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公开(公告)号：US20170135001A1
公开(公告)日：2017-05-11
申请号：US15343942
申请日：2016-11-04
Inventor： Won-Ik KIM , Seokki KIM , Taegyun NOH , Yu Ro LEE , Kwang Jae LIM , Sung Cheol CHANG , Soojung JUNG , Seungkwon CHO
CPC classification number: H04W36/0077 , H04L5/0055 , H04L69/324 , H04W74/006 , H04W74/0833
Abstract: A terminal executes a random access procedure with a target base station depending on a pre-random access channel (pre-RACH) command in a handover preparation step executed between a source base station currently accessed by the terminal and the target base station when the terminal receives the pre-RACH command from the source base station through layer2 (L2) signaling in the handover preparation step.
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79.发明申请公开(公告)号：US20160360518A1
公开(公告)日：2016-12-08
申请号：US15173074
申请日：2016-06-03
Inventor： Taegyun NOH , Kwang Jae LIM , Chul Sik YOON , Yu Ro LEE , Sung Cheol CHANG
CPC classification number: H04L27/2607 , H04L5/0051 , H04L5/0053 , H04L5/0055
Abstract: A method and an apparatus for transmitting the physical uplink control channel including an uplink control channel expressed by product of a uplink control information and a sequence and demodulation reference signal expressed by a sequence having different cyclic shift values through a short resource block are provided.
Abstract translation: 提供了一种用于发送包括由上行链路控制信息的乘积表示的上行链路控制信道和通过短资源块由具有不同的循环移位值的序列表示的序列和解调参考信号的物理上行链路控制信道的方法和装置。
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80.发明申请WIRELESS COMMUNICATION METHOD FOR ENHANCING TRANSMISSION EFFICIENCY THROUGH SEPARATING TRANSMISSION INTERVAL IN WIRELESS LOCAL AREA NETWORK (WLAN) SYSTEM 审中-公开无线局域网（WLAN）系统通过分离传输间隔来提高传输效率的无线通信方法公开(公告)号：US20160150557A1
公开(公告)日：2016-05-26
申请号：US14946551
申请日：2015-11-19
Inventor： Jae Seung LEE , IL Gyu KIM , Jae Woo PARK , Yu Ro LEE , Jee Yon CHOI
CPC classification number: H04W52/0206 , H04W48/12 , H04W74/04 , H04W84/12 , Y02D70/1224 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146 , Y02D70/166
Abstract: Provided is a wireless communication method performed at an access point to enhance the transmission efficiency in a wireless local area network (WLAN) system, the method including scheduling a transmission time of an enhanced traffic indicator map (TIM) frame based on a type of a station, and transmitting a second beacon including the enhanced TIM frame to the station at a point in time aside from a transmission point in time of a first beacon.
Abstract translation: 提供了一种在接入点执行的无线通信方法，以提高无线局域网（WLAN）系统中的传输效率，所述方法包括基于类型的一种类型调度增强业务指示符映射（TIM）帧的传输时间 并且在除了第一信标的时间的传输点之外的时间点将包括增强的TIM帧的第二信标发送到所述站。
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