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公开(公告)号：US20200229160A1
公开(公告)日：2020-07-16
申请号：US16827892
申请日：2020-03-24
Applicant: Optis Cellular Technology, LLC
Inventor： Dae Won LEE , Ki Jun KIM , Dong Wook ROH , Yu Jin NOH , Joon Kui AHN , Jung Hoon LEE
Abstract: A User Equipment (UE) monitors a set of Physical Downlink Control Channel (PDCCH) candidates for control information received from a base station at subframe k. The set of PDCCH candidates to monitor are defined in terms of search spaces. The UE monitors a UE-specific search space, among the search spaces, at each of aggregation levels (L) of 1, 2, 4 and 8 control channel elements (CCEs), the CCE being a resource unit comprising a specific number of resource elements and used for transmission of the control information. The L CCEs correspond to a first PDCCH candidate among the set of PDCCH candidates of the search space at a subframe k are located at positions given by: L*{(Yk)mod(floor(C))}+i, wherein i−0, . . . , L-1, where Yk is defined by: Yk−(A*Yk−1B) mod D. The variable C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L), and A, B, and D are predetermined constant values predetermined regardless of the aggregation levels L. The UE decodes the control information of the PDCCH.
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公开(公告)号：US20160381668A1
公开(公告)日：2016-12-29
申请号：US15262298
申请日：2016-09-12
Applicant: Optis Cellular Technology, LLC
Inventor： Dae Won LEE , Ki Jun KIM , Dong Wook ROH , Yu Jin NOH , Joon Kui AHN , Jung Hoon LEE
CPC classification number: H04W72/042 , H04L5/0007 , H04L5/0037 , H04L5/0053 , H04L27/2626 , H04L27/2647 , H04L27/2656 , H04L27/2666 , H04W24/08 , H04W48/12 , H04W88/02 , H04W88/08
Abstract: A method for efficiently transmitting and receiving control information through a Physical Downlink Control Channel (PDCCH) is provided. When a User Equipment (UE) receives control information through a PDCCH, the received control information is set to be decoded in units of search spaces, each having a specific start position in the specific subframe. Here, a modulo operation according to a predetermined first constant value (D) is performed on an input value to calculate a first result value, and a modulo operation according to a predetermined first variable value (C) corresponding to the number of candidate start positions that can be used as the specific start position is performed on the calculated first result value to calculate a second result value and an index position corresponding to the second result value is used as the specific start position. Transmitting control information in this manner enables a plurality of UEs to efficiently receive PDCCHs without collisions.
Abstract translation: 提供了一种通过物理下行链路控制信道（PDCCH）高效地发送和接收控制信息的方法。 当用户设备（UE）通过PDCCH接收到控制信息时，所接收的控制信息被设置为以搜索空间为单位进行解码，每个搜索空间在特定子帧中具有特定的开始位置。 这里，对输入值执行根据预定的第一常数值（D）的模运算以计算第一结果值，并且根据与候选开始位置的数量相对应的预定的第一可变值（C）进行模运算 对计算出的第一结果值执行可用作特定开始位置的计算第二结果值，并将与第二结果值对应的索引位置用作特定开始位置。 以这种方式发送控制信息使得多个UE能够有效地接收PDCCH而不发生冲突。
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公开(公告)号：US20210234661A1
公开(公告)日：2021-07-29
申请号：US17230593
申请日：2021-04-14
Applicant: Optis Cellular Technology, LLC
Inventor： Dae Won Lee , Bong Hoe KIM , Young Woo YUN , Ki Jun KIM , Dong Wook ROH , Hak Seong KIM , Hyun Wook PARK
Abstract: A method for transmitting uplink signals comprises multiplexing data and first type control information to output multiplexed signals; mapping the multiplexed signals to a resource region matrix; mapping second type control information to the resource region matrix to overwrite some of the multiplexed signals mapped to specific positions of the resource region matrix corresponding to symbols which are near symbols used for reference signals; and transmitting an output sequence of the resource region matrix to the base station. The second type control information comprises at least one of an ACK/NACK information and a rank indicator (RI), and the first type control information comprises control information other than the rank indicator (RI) and the ACK/NACK information.
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Patent Agency Ranking
公开(公告)号：US20190029008A1
公开(公告)日：2019-01-24
申请号：US16142027
申请日：2018-09-26
Applicant: Optis Cellular Technology, LLC
Inventor： Dae Won LEE , Ki Jun KIM , Dong Wook ROH , Yu Jin NOH , Joon Kui AHN , Jung Hoon LEE
Abstract: A User Equipment (UE) receives control information via a Physical Downlink Control Channel (PDCCH) at subframe k. A decoder monitors a set of PDCCH candidates a UE-specific search space, among the search spaces, at each of aggregation levels (L) of 1, 2, 4 and 8 control channel elements (CCEs). The UE-specific search space is given based on a modulus operation using variables Yk and C for the subframe k. Yk is defined by: Yk=(A*Yk−1+B) mod D. C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L). A, B, and D are predetermined constant values regardless of the aggregation levels (L). Y−1 is determined based on a UE identifier having 16-bits when k=0. The decoder decodes the control information of the PDCCH.
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公开(公告)号：US20180035414A1
公开(公告)日：2018-02-01
申请号：US15730783
申请日：2017-10-12
Applicant: Optis Cellular Technology, LLC
Inventor： Dae Won LEE , Ki Jun KIM , Dong Wook ROH , Yu Jin NOH , Joon Kui AHN , Jung Hoon LEE
CPC classification number: H04W72/042 , H04L5/0007 , H04L5/0037 , H04L5/0053 , H04L27/2626 , H04L27/2647 , H04L27/2656 , H04L27/2666 , H04W24/08 , H04W48/12 , H04W88/02 , H04W88/08
Abstract: A User Equipment (UE) receives a Physical Downlink Control Channel (PDCCH) at subframe k and decodes at the subframe k a set of PDCCH candidates including L control channel elements (CCEs). The L CCEs are contiguously located from a position given by using a variable of Yk and a modulo (N/L) operation, where N represents a total number of CCEs in the subframe k, Yk is defined by Yk=(A*Yk−1)mod D, and A and D are predetermined constant values. When k=0, Y−1 is determined based on a UE identifier having 16-bits.
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公开(公告)号：US20150180638A1
公开(公告)日：2015-06-25
申请号：US14631315
申请日：2015-02-25
Applicant: OPTIS CELLULAR TECHNOLOGY, LLC
Inventor： Dae Won LEE , Bong Hoe KIM , Young Woo YUN , Ki Jun KIM , Dong Wook ROH , Hak Seong KIM , Hyun Wook PARK
IPC: H04L5/00
CPC classification number: H04L5/0055 , H04L1/0081 , H04L1/1664 , H04L1/1671 , H04L1/1861 , H04L5/0007 , H04L5/0053 , H04L5/0057
Abstract: A method for transmitting uplink signals, which include ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals, is disclosed. The method comprises serially multiplexing the control signals and the data signals; sequentially mapping the multiplexed signals within a specific resource region in accordance with a time-first mapping method, the specific resource region including a plurality of symbols and a plurality of virtual subcarriers; and arranging the ACK/NACK signals at both symbols near symbols to which a reference signal of the plurality of symbols is transmitted. Thus, the uplink signals can be transmitted to improve receiving reliability of signals having high priority.
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公开(公告)号：US20210266884A1
公开(公告)日：2021-08-26
申请号：US17317001
申请日：2021-05-11
Applicant: Optis Cellular Technology, LLC
Inventor： Dae Won LEE , Ki Jun KIM , Dong Wook ROH , Yu Jin NOH , Joon Kui AHN , Jung Hoon LEE
Abstract: A User Equipment (UE) monitors a set of Physical Downlink Control Channel (PDCCH) candidates for control information received from a base station at subframe k. The set of PDCCH candidates to monitor are defined in terms of search spaces. The UE monitors a UE-specific search space, among the search spaces, at each of aggregation levels (L) of 1, 2, 4 and 8 control channel elements (CCEs), the CCE being a resource unit comprising a specific number of resource elements and used for transmission of the control information. The L CCEs correspond to a first PDCCH candidate among the set of PDCCH candidates of the search space at a subframe k are located at positions given by: L*{(Yk)mod(floor(C))}+i, wherein i=0, . . . , L−1, where Yk is defined by: Yk=(A*Yk−1+B) mod D. The variable C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L), and A, B, and D are predetermined constant values predetermined regardless of the aggregation levels L. The UE decodes the control information of the PDCCH.
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公开(公告)号：US20190319769A1
公开(公告)日：2019-10-17
申请号：US16453069
申请日：2019-06-26
Applicant: Optis Cellular Technology, LLC
Inventor： Dae Won Lee , Bong Hoe KIM , Young Woo YUN , Ki Jun KIM , Dong Wook ROH , Hak Seong KIM , Hyun Wook PARK
Abstract: A method for transmitting uplink signals, which include ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals, is disclosed. The method comprises serially multiplexing the control signals and the data signals; sequentially mapping the multiplexed signals within a specific resource region in accordance with a time-first mapping method, the specific resource region including a plurality of symbols and a plurality of virtual subcarriers; and arranging the ACK/NACK signals at both symbols near symbols to which a reference signal of the plurality of symbols is transmitted. Thus, the uplink signals can be transmitted to improve receiving reliability of signals having high priority.
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