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

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04L1/00

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.

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

IPC: H04W72/04 ,  H04W24/08

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.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04W24/08 ,  H04L27/26 ,  H04W48/12 ,  H04W88/08 ,  H04W88/02

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.

公开(公告)号：US20150333892A1

公开(公告)日：2015-11-19

申请号：US14810505

申请日：2015-07-28

Applicant: OPTIS CELLULAR TECHNOLOGY, LLC

Inventor： Joon Kui AHN ,  Dae Won LEE ,  Young Woo YUN ,  Ki Jun KIM

IPC: H04L5/00 ,  H04L5/14 ,  H04W72/04

CPC classification number: H04L5/0055 ,  H04L1/1812 ,  H04L5/14 ,  H04L12/1868 ,  H04L12/52 ,  H04W72/0406

Abstract: Methods and apparatus for performing HARQ performed by a user equipment (UE) are provided. A bundling indicator is received which indicates the number of bundled downlink subframes, and a determination is made whether at least one bundled downlink subframe is missed by comparing the bundling indicator with the number of detected bundled downlink subframes. A representative ACK/NACK signal is generated when no bundled downlink subframe is missed, and the representative ACK/NACK signal is transmitted on an uplink channel. Recovery capability is maximized and packet loss is reduced so that fewer ACK/NACK signals are fed back than downlink packets.

Abstract translation: 提供了由用户设备（UE）执行的用于执行HARQ的方法和装置。 接收指示捆绑的下行链路子帧的数量的捆绑指示符，并且通过将捆绑指示符与检测到的捆绑的下行链路子帧的数量进行比较来确定是否错过了至少一个捆绑的下行链路子帧。 当没有捆绑的下行链路子帧丢失时生成代表性的ACK / NACK信号，并且在上行链路信道上发送代表性的ACK / NACK信号。 恢复能力最大化，并且分组丢失减少，使得比下行链路分组反馈的ACK / NACK信号更少。

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.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W48/12 ,  H04W24/08

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.

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

IPC: H04L5/00 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18

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.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W48/12 ,  H04W24/08

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.

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

IPC: H04W72/04 ,  H04W24/08

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。

公开(公告)号：US20160254900A1

公开(公告)日：2016-09-01

申请号：US15149208

申请日：2016-05-09

Applicant: OPTIS CELLULAR TECHNOLOGY, LLC

Inventor： Joon Kui AHN ,  Dae Won LEE ,  Young Woo YUN ,  Ki Jun KIM

IPC: H04L5/14 ,  H04L1/18 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L5/0055 ,  H04L1/1812 ,  H04L5/14 ,  H04L12/1868 ,  H04L12/52 ,  H04W72/0406

Abstract: A user equipment receives configuration information from a base station in a wireless communication system. Radio signals carrying configuration control information are received by a user equipment (UE) that includes an ACK/NACK feedback mode indicator. The UE also receives downlink subframes. The ACK/NACK feedback mode indicator is processed to determine if the ACK/NACK feedback mode indicator indicates the user equipment should (a) send an ACK/NACK signal in a one-to-one mapping between a downlink subframe and a corresponding uplink ACK/NACK signal or (b) send an ACK/NACK signal in an N-to-one mapping between N downlink subframes, where N is an integer greater than one, and a corresponding single uplink ACK/NACK signal. One or more ACK/NACK signals is transmitted in accordance with the determination of the processor.

Abstract translation: 用户设备从无线通信系统中的基站接收配置信息。 携带配置控制信息的无线电信号由包括ACK / NACK反馈模式指示符的用户设备（UE）接收。 UE还接收下行子帧。 处理ACK / NACK反馈模式指示符以确定ACK / NACK反馈模式指示符是否指示用户设备应当（a）在下行链路子帧和对应的上行链路ACK之间的一对一映射中发送ACK / NACK信号 / NACK信号，或（b）在N个下行链路子帧之间的N对1映射中发送ACK / NACK信号，其中N是大于1的整数，以及对应的单个上行链路ACK / NACK信号。 根据处理器的确定来发送一个或多个ACK / NACK信号。