公开(公告)号：US12003254B2

公开(公告)日：2024-06-04

申请号：US17297705

申请日：2019-12-05

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Kwangseok Noh ,  Ilmin Kim

IPC: H03M13/13 ,  H04L1/00 ,  H04L1/1812 ,  H04L1/1829

CPC classification number: H03M13/13 ,  H04L1/0061 ,  H04L1/1812 ,  H04L1/1861

Abstract: A method for transmitting data on the basis of polar coding in a wireless communication system, according to the present disclosure may comprise the steps of: transmitting data including a plurality of information blocks, each of which contains a corresponding cyclic redundancy check (CRC); receiving a hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ ACK/NACK) of the transmitted data; performing learning in order to retransmit the plurality of information blocks; and retransmitting the plurality of information blocks on the basis of the HARQ ACK/NACK, wherein the step of performing learning comprises the steps of: obtaining current state sn; obtaining actions to be applied to current state sn; and selecting, from the actions, an action maximizing expected reward value Qn+1, wherein expected reward value Qn+1 is obtained on the basis of rewards R1, R2, . . . , Rn corresponding to states s1, s2, . . . , sn, and the plurality of information blocks is retransmitted on the basis of the selected action.

公开(公告)号：US09516607B2

公开(公告)日：2016-12-06

申请号：US14532885

申请日：2014-11-04

Applicant: LG ELECTRONICS INC.

Inventor： Daesung Hwang ,  Ilmin Kim

IPC: H04B7/00 ,  H04W52/26 ,  H04W52/20

CPC classification number: H04W52/267 ,  H04W52/20

Abstract: There is a provided a method for deciding transmission power to securely transmit data, the method comprising: determining a transmission rate toward an intended receiver, based on an upper limit of a decoding error probability of the intended receiver and a lower limit of a decoding error probability of an unwanted over hearer; and deciding a transmission power toward the intended receiver based on the upper limit and the lower limit. Here, if the upper limit is lower than the lower limit, the transmission toward the intended receiver is not performed.

Abstract translation: 提供了一种用于确定发送功率以安全地发送数据的方法，所述方法包括：基于预期接收机的解码错误概率的上限和解码错误的下限来确定朝向预期接收机的传输速率 不必要的超过听众的可能性; 并且基于上限和下限来确定朝向预期接收机的传输功率。 这里，如果上限低于下限，则不进行向目的接收机的发送。

公开(公告)号：US09954645B2

公开(公告)日：2018-04-24

申请号：US14959828

申请日：2015-12-04

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Ilmin Kim ,  Byounghoon Kim

IPC: H03M13/00 ,  H04L1/00

CPC classification number: H04L1/0041 ,  H03M13/13 ,  H04L1/0009 ,  H04L1/0057 ,  H04L63/0428

Abstract: A method and apparatus for providing a secure transmission based on a polar code are provided. A device generates an output bit sequence by applying a polar code generator matrix to an input bit sequence and transmits the output bit sequence to a target receiver. The input bit sequence includes first information bits, second information bits and third information bits. The first information bits correspond to gray bit channels for the target receiver and bad bit channels for an eavesdropper. The third information bits correspond to good bit channels for the target receiver and gray bit channels for the eavesdropper.

公开(公告)号：US09735925B2

公开(公告)日：2017-08-15

申请号：US14820457

申请日：2015-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Ilmin Kim ,  Byounghoon Kim

IPC: H04L1/18 ,  H04L1/08 ,  H04L1/20

CPC classification number: H04L1/08 ,  H04L1/1812 ,  H04L1/1896 ,  H04L1/203

Abstract: Provided is a method for performing Hybrid Automatic Repeat Request (HARQ) by a data transmitting terminal in a wireless communication system. The terminal transmits data using a specific code word selected from a plurality of code words included in a mother code, calculates a Bit Error Rate (BER) upper bound for a receiving terminal that receives the data, calculates a BER lower bound for another terminal that is able to eavesdrop the data, and performs the HARQ based on whether the BER upper bound is greater than a BER reference level for the receiving terminal and whether a probability of the BER lower bound being less than the BER reference level for the another terminal is less than a predetermined value.

公开(公告)号：US10231121B2

公开(公告)日：2019-03-12

申请号：US15191158

申请日：2016-06-23

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Ilmin Kim ,  Kijun Kim ,  Byounghoon Kim

IPC: H04L29/06 ,  H04W12/02 ,  H04L9/08

Abstract: A method and apparatus for providing a security communication are provided. A device generates an output bit sequence by applying a polar code scheme to an input bit sequence and transmit the output bit sequence to a target receiver. The output bit sequence is generagted based on a double layer polar coding scheme.

公开(公告)号：US09401806B2

公开(公告)日：2016-07-26

申请号：US14572570

申请日：2014-12-16

Applicant: LG ELECTRONICS INC.

Inventor： Daesung Hwang ,  Ilmin Kim ,  Byounghoon Kim

IPC: H03M13/00 ,  H04L9/08 ,  H03M13/23 ,  H03M13/29 ,  H04L1/00

CPC classification number: H04L9/0875 ,  H03M13/23 ,  H03M13/2957 ,  H04L1/0066 ,  H04L2209/34

Abstract: The present invention develops a wireless communication transmitting scheme which allows a desired receiver to stably receive data so that data are not tapped by a third party when a transmitter transmits data to the receiver in a wireless scheme. In particular, the third party not a desired receiver taps, a bit error probability of received data is maintained to have about 50%, so that the third party cannot substantially obtain valid data. A suggested scheme of the present invention may transmit security data in a state that a transmitter and a receiver do not have a secret key unlike an existing cryptography.

Abstract translation: 本发明开发了一种无线通信发送方案，其允许期望的接收机稳定地接收数据，使得当发射机以无线方案向接收机发射数据时，数据不被第三方利用。 特别地，第三方不是期望的接收器抽头，所以接收到的数据的位错误概率被保持为具有约50％，使得第三方基本上不能获得有效的数据。 本发明的建议方案可以在发送器和接收器不具有现有加密技术的情况下不具有密钥的状态下发送安全数据。