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公开(公告)号：US11973553B2
公开(公告)日：2024-04-30
申请号：US17917930
申请日：2021-01-12
申请人： GCT RESEARCH, INC
发明人： Jeong Min Kim , Hyungkoo Lee
IPC分类号： H04B7/06 , H04B1/3827
CPC分类号： H04B7/0617 , H04B1/3827 , H04B7/0691
摘要： Proposed is a mobile router for transmitting and receiving millimeter waves to and from a base station, the mobile router including a first member including an antenna array configured to transmit and receive the millimeter waves, a second member, and an angle adjustment part connecting the first member to the second member, wherein the angle adjustment part is formed such that the first member and the second member are adjusted at a predetermined angle so as to allow the antenna array to transmit and receive the millimeter waves at a specific angle. The first member including the antenna array is configured to be unfolded at a predetermined angle with respect to the second member in order to transmit and receive a 5G millimeter wave beam signal at a specific angle, and thus a user can optimally adjust the transmission/reception sensitivity of 5G millimeter waves.
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2.发明授权公开(公告)号：US11316618B2
公开(公告)日：2022-04-26
申请号：US16729597
申请日：2019-12-30
申请人： GCT Research, Inc.
发明人： Tae Won Park , Ji Ho Jang , In Seok Hwang
摘要： The present invention relates to a method of accumulating and decoding a PBCH signal received by a 5G NR receiver, the method including: generating an inversion vector for negating at least one bit of a system frame number (SFN) included the received PBCH signal; performing accumulation over at least one frame by performing modulo addition on the generated inversion vector and the received PBCH signal; decoding the accumulated PBCH signals; and checking validity of the decode PBCH and reconstructing the SFN.
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公开(公告)号：US20230008254A1
公开(公告)日：2023-01-12
申请号：US17858020
申请日：2022-07-05
申请人： GCT Research, Inc.
发明人： Eal Wan LEE , Jeong Min KIM
摘要： Provided are an electronic device and an operation method of the electronic device for finding a direction of a neighboring device effectively in a wireless communication system without additional hardware. According to the present disclosure, there is provided an electronic device for finding a direction of a neighboring device in a wireless communication system, the electronic device includes an antenna array including a first antenna and a second antenna for receiving a radio frequency (RF) signal, an antenna switch configured to switch antennas for receiving the RF signal among the plurality of antennas, and a controller. The controller is configured to control the antenna switch to receive the RF signal from the neighboring device through the first antenna, control the antenna switch to switch from the first antenna to the second antenna to receive the RF signal during a time interval in which an error detection code is detected, and detect the direction in which the neighboring device is located based on a result of decoding the error detection code.
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4.发明授权公开(公告)号：US10931341B2
公开(公告)日：2021-02-23
申请号：US16748859
申请日：2020-01-22
申请人： GCT Research, Inc.
发明人： In Seok Hwang , Ji Ho Jang , Tae Won Park
IPC分类号： H04L1/02 , H04B7/0456 , H04L5/00 , H04B7/06
摘要： The present invention relates to a CSI extraction method in a MIMO receiver used in a wireless communication system, the method including: obtaining an effective channel matrix by matrix multiplication of a precoding matrix and a channel estimation value obtained through a CSI-RS; calculating an upper and a lower bound of a minimum distance for each layer through QR decomposition for the effective channel matrix; and mapping the upper and the lower bound of the minimum distance for each layer to each codeword, and extracting a mean mutual information per bit (MMIB) metric that is a transmission capacity per unit frequency for each codeword. According to the present invention, QR decomposition and a MMIB metric are used to obtain the minimum distance for each layer without a multidimensional search process, whereby the CSI is extracted with fewer operations than the conventional method when the MIMO transmission order is high.
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公开(公告)号：US10897294B2
公开(公告)日：2021-01-19
申请号：US16701157
申请日：2019-12-03
申请人： GCT Research, Inc.
发明人： Ji Ho Jang , In Seok Hwang , Tae Won Park
IPC分类号： H04B7/0456
摘要： The present invention relate to a method of extracting an optimum rank without considering a precoding matrix indicator (PMI) in a multiple-input multiple-output (MIMO) receiver, the method including calculating a correlation matrix from a MIMO channel matrix between a base station antenna and an MIMO receiver antenna; obtaining an eigenvalue from the correlation matrix; calculating channel capacity for each rank on the basis of the obtained eigenvalue; and selecting a rank corresponding to a channel capacity having a maximum value among the calculated channel capacities for each rank as an optimum rank.
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公开(公告)号：US20230198589A1
公开(公告)日：2023-06-22
申请号：US17917930
申请日：2021-01-12
申请人： GCT RESEARCH, INC
发明人： Jeong Min KIM , Hyungkoo LEE
IPC分类号： H04B7/06 , H04B1/3827
CPC分类号： H04B7/0617 , H04B1/3827 , H04B7/0691
摘要： Proposed is a mobile router for transmitting and receiving millimeter waves to and from a base station, the mobile router including a first member including an antenna array configured to transmit and receive the millimeter waves, a second member, and an angle adjustment part connecting the first member to the second member, wherein the angle adjustment part is formed such that the first member and the second member are adjusted at a predetermined angle so as to allow the antenna array to transmit and receive the millimeter waves at a specific angle. The first member including the antenna array is configured to be unfolded at a predetermined angle with respect to the second member in order to transmit and receive a 5G millimeter wave beam signal at a specific angle, and thus a user can optimally adjust the transmission/reception sensitivity of 5G millimeter waves.
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7.发明申请公开(公告)号：US20200235795A1
公开(公告)日：2020-07-23
申请号：US16748859
申请日：2020-01-22
申请人： GCT Research, Inc.
发明人： In Seok HWANG , Ji Ho JANG , Tae Won PARK
IPC分类号： H04B7/0456 , H04L5/00 , H04B7/06
摘要： The present invention relates to a CSI extraction method in a MIMO receiver used in a wireless communication system, the method including: obtaining an effective channel matrix by matrix multiplication of a precoding matrix and a channel estimation value obtained through a CSI-RS; calculating an upper and a lower bound of a minimum distance for each layer through QR decomposition for the effective channel matrix; and mapping the upper and the lower bound of the minimum distance for each layer to each codeword, and extracting a mean mutual information per bit (MMIB) metric that is a transmission capacity per unit frequency for each codeword. According to the present invention, QR decomposition and a MMIB metric are used to obtain the minimum distance for each layer without a multidimensional search process, whereby the CSI is extracted with fewer operations than the conventional method when the MIMO transmission order is high.
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8.发明申请公开(公告)号：US20200220662A1
公开(公告)日：2020-07-09
申请号：US16729597
申请日：2019-12-30
申请人： GCT Research, Inc.
发明人： Tae Won PARK , Ji Ho JANG , In Seok HWANG
摘要： The present invention relates to a method of accumulating and decoding a PBCH signal received by a 5G NR receiver, the method including: generating an inversion vector for negating at least one bit of a system frame number (SFN) included the received PBCH signal; performing accumulation over at least one frame by performing modulo addition on the generated inversion vector and the received PBCH signal; decoding the accumulated PBCH signals; and checking validity of the decode PBCH and reconstructing the SFN.
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