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1.发明公开公开(公告)号：US20240048264A1
公开(公告)日：2024-02-08
申请号：US18365356
申请日：2023-08-04
Inventor： Hee Wook KIM
CPC classification number: H04J13/0048 , H04J13/16 , H04L5/0048
Abstract: A method of a base station may comprise: mapping at least one port of the base station to each of a plurality of user equipments (UEs) to be overloaded; configuring overloading signatures for a code division multiplexing (CDM) scheme; mapping the overloading signatures with the plurality of UEs to be overloaded, respectively; transmitting a message including configuration information of the overloading signatures to the plurality of UEs; and transmitting, to the plurality of UEs, signals multiplexed by the CDM scheme using the overloading signatures.
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公开(公告)号：US20250167837A1
公开(公告)日：2025-05-22
申请号：US18952488
申请日：2024-11-19
Inventor： Satya CHAN , Hee Wook KIM , Dae Sub OH
Abstract: A security enhancement method, performed by a controller controlling a reconfigurable intelligent surface (RIS), may comprise: selecting first RIS elements for a first signal transmitted between a transmitter and a first receiver that is a legitimate receiver, the first RIS elements including at least part of elements of the RIS; transmitting the first signal to the first receiver using the first RIS elements; and dynamically rendering a channel with another receiver or an eavesdropper without changing a channel with the first receiver during a channel coherence time between the transmitter and the first receiver, by changing phase(s) of at least part of the first RIS elements at least once during the channel coherence time.
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公开(公告)号：US20250150880A1
公开(公告)日：2025-05-08
申请号：US18934230
申请日：2024-10-31
Inventor： Hee Wook KIM
Abstract: A method of a terminal may comprise: obtaining information on a dedicated service area of a non-terrestrial base station from the non-terrestrial base station; receiving neighboring cell information from the non-terrestrial base station; identifying a measurement target neighboring cell based on the neighboring cell information; and determining whether to initiate cell measurement on the measurement target neighboring cell based on the information on the dedicated service area.
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公开(公告)号：US20250106797A1
公开(公告)日：2025-03-27
申请号：US18896575
申请日：2024-09-25
Inventor： Hee Wook KIM
Abstract: A method of a terminal may comprise: receiving, from a base station, information on Timing Advance (TA) groups, which are divided into groups, each having a specific unit size, based on a range for TAs occurring within a cell, and information on group-specific scheduling offsets mapped to the TA groups; calculating a pre-compensated TA based on satellite ephemeris information of the base station and location information of the terminal; identifying a group-specific scheduling offset mapped to a TA group corresponding to the pre-compensated TA; and transmitting a first uplink signal including a preamble to the base station using an uplink timing adjusted based on the group-specific scheduling offset.
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公开(公告)号：US20190013969A1
公开(公告)日：2019-01-10
申请号：US16104467
申请日：2018-08-17
Inventor： Tae Chul HONG , Hee Wook KIM , Kwang Jae LIM
Abstract: A handover method and a control transfer method are provided. A handover method of performing an inter-cell handover between a first ground station and a second ground station may include setting a first channel to the second ground station, measuring, by an airborne radio station, a second channel and reporting a measurement result to the first ground station, sending, by the first ground station, a handover request to at least one of a ground control station (GCS) or a control and non-payload communication (CNPC) network, determining, by the at least one of the GCS or the CNPC network, whether to perform a handover, and transmitting, by the at least one of the GCS or the CNPC network, a handover instruction to the airborne radio station based on a result of the determining.
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Patent Agency Ranking
公开(公告)号：US20180139074A1
公开(公告)日：2018-05-17
申请号：US15607889
申请日：2017-05-30
Inventor： Tae Chul HONG , Hee Wook KIM , Kwang Jae LIM
CPC classification number: H04L12/56 , H04B7/185 , H04W36/08 , H04W36/16 , H04W36/28 , H04W72/0406 , H04W84/045
Abstract: A handover method and a control transfer method are provided. A handover method of performing an inter-cell handover between a first ground station and a second ground station may include setting a first channel to the second ground station, measuring, by an airborne radio station, a second channel and reporting a measurement result to the first ground station, sending, by the first ground station, a handover request to at least one of a ground control station (GCS) or a control and non-payload communication (CNPC) network, determining, by the at least one of the GCS or the CNPC network, whether to perform a handover, and transmitting, by the at least one of the GCS or the CNPC network, a handover instruction to the airborne radio station based on a result of the determining.
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公开(公告)号：US20170215178A1
公开(公告)日：2017-07-27
申请号：US15394151
申请日：2016-12-29
Inventor： Hee Wook KIM , Jae Young AHN
CPC classification number: H04W72/048 , G08G5/0013 , G08G5/0069 , H04W72/0453
Abstract: A dynamic channel assignment method includes receiving, at a ground control station (GCS), assignment of a first communication channel set from a spectrum authority before takeoff of the unmanned aircraft; receiving, at the GCS, assignment of a second communication channel set when the unmanned aircraft is to move from a first area using the first communication channel set to a second area using the second communication channel set due to a flight plan of the unmanned aircraft after takeoff of the unmanned aircraft; and after the unmanned aircraft enters the second area, maintaining, at the GCS, the first communication channel set when the unmanned aircraft reenters the first area due to the flight plan, and returning, at the GCS, the first communication channel set to the spectrum authority when the unmanned aircraft does not reenter the first area due to the flight plan.
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8.发明申请公开(公告)号：US20250106793A1
公开(公告)日：2025-03-27
申请号：US18896287
申请日：2024-09-25
Inventor： Hee Wook KIM
Abstract: A method of a base station may comprise: receiving a link signal from a satellite; obtaining a first reference time of the satellite from the link signal; configuring a second reference time of the base station based on the first reference time; and transmitting a downlink signal to a terminal based on the second reference time, wherein the satellite belongs to a non-terrestrial network and the base station belongs to a terrestrial network.
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9.发明申请公开(公告)号：US20180160433A1
公开(公告)日：2018-06-07
申请号：US15827527
申请日：2017-11-30
Inventor： Hee Wook KIM , Kwang Jae LIM , Tae Chul HONG
CPC classification number: H04W72/082 , H04B7/18504 , H04W72/0406 , H04W72/0446
Abstract: Disclosed is a channel assignment method of a communication system for controlling an unmanned aerial vehicle (UAV), the method including receiving assignment data and an interference analysis criterion from a spectrum authority; performing an interference analysis and selecting a control and non-payload communication (CNPC) channel based on the assignment data and the interference analysis criterion; and requesting the spectrum authority for assigning the CNPC channel.
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10.发明申请MULTILAYER-BASED MULTIBEAM SATELLITE COMMUNICATION SYSTEM AND SIGNAL TRANSMISSION METHOD USING THE SAME 审中-公开基于多层多媒体卫星通信系统和信号传输方法公开(公告)号：US20160261334A1
公开(公告)日：2016-09-08
申请号：US15060903
申请日：2016-03-04
Inventor： Hee Wook KIM
CPC classification number: H04B7/18513 , H04B7/0413 , H04B7/0671
Abstract: Provided a method and a system for increasing system capacity in a multibeam satellite communication system. A signal transmission method of a multilayer-based multibeam structure of a satellite communication system may include generating a multilayer-based multibeam structure; selecting two or more layers for forming a single frequency selective channel; generating a transmission signal by applying the same channel encoding scheme to the two or more selected layer; and transmitting the transmission signal.
Abstract translation: 提供了一种用于增加多波束卫星通信系统中的系统容量的方法和系统。 卫星通信系统的基于多层的多波束结构的信号传输方法可以包括生成基于多层的多波束结构; 选择用于形成单个频率选择性信道的两个或更多个层; 通过将相同的信道编码方案应用于两个或更多个所选择的层来产生传输信号; 并发送发送信号。
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