公开(公告)号：US09603174B2

公开(公告)日：2017-03-21

申请号：US14484547

申请日：2014-09-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyoung-Soo Lim ,  Woo-Yong Choi ,  Yong-Sun Kim ,  Jae-Young Ahn

IPC: H04W4/00 ,  H04L1/16 ,  H04W76/02 ,  H04L1/00 ,  H04L5/02 ,  H04W28/04 ,  H04W72/04 ,  H04L27/26 ,  H04W8/26 ,  H04W76/06

CPC classification number: H04W76/021 ,  H04L1/0001 ,  H04L1/0083 ,  H04L1/1621 ,  H04L1/1664 ,  H04L5/023 ,  H04L27/2601 ,  H04L27/2608 ,  H04L2001/0093 ,  H04W8/26 ,  H04W28/04 ,  H04W72/042 ,  H04W72/0453 ,  H04W76/10 ,  H04W76/11 ,  H04W76/30

Abstract: The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.

公开(公告)号：US11076394B2

公开(公告)日：2021-07-27

申请号：US16237767

申请日：2019-01-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyoung-Soo Lim ,  Woo-Yong Choi ,  Yong-Sun Kim ,  Jae-Young Ahn

IPC: H04W72/04 ,  H04L1/00 ,  H04L1/16 ,  H04L5/02 ,  H04W76/11 ,  H04W28/04 ,  H04L27/26 ,  H04W8/26 ,  H04W76/30 ,  H04W76/10

Abstract: The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.

公开(公告)号：US10142140B2

公开(公告)日：2018-11-27

申请号：US15421295

申请日：2017-01-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joung-Il Yun ,  Sang-Woon Kwak ,  Myung-Sun Baek ,  Hae-Chan Kwon ,  Hyoung-Soo Lim ,  Nam-Ho Hur ,  Nam-Shik Kim ,  Bi-Woong Chung

IPC: H04L1/00 ,  H04L27/01 ,  H04L25/06 ,  H04L25/03 ,  H04B1/7107

Abstract: Disclosed herein are an apparatus and method for receiving a signal based on FTN. The apparatus for receiving a signal based on FTN includes an equalizer for creating a Log Likelihood Ratio (LLR) sequence by equalizing an FTN signal sequence sampled at an FTN signaling rate; a deinterleaver for deinterleaving the created LLR sequence; a decoder for decoding the LLR sequence by correcting errors in the deinterleaved LLR sequence; an interleaver for interleaving the decoded LLR sequence and providing the interleaved LLR sequence to the equalizer; and an FTN interference estimation unit for providing the FTN signal sequence, from which an FTN interference sequence is eliminated, to the equalizer, using the interleaved LLR sequence.

公开(公告)号：US10206207B2

公开(公告)日：2019-02-12

申请号：US15450808

申请日：2017-03-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyoung-Soo Lim ,  Woo-Yong Choi ,  Yong-Sun Kim ,  Jae-Young Ahn

IPC: H04W4/00 ,  H04L1/16 ,  H04W72/04 ,  H04L1/00 ,  H04L5/02 ,  H04W28/04 ,  H04W76/11 ,  H04L27/26 ,  H04W8/26 ,  H04W76/30 ,  H04W76/10

Abstract: The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.

公开(公告)号：US10129051B2

公开(公告)日：2018-11-13

申请号：US15659453

申请日：2017-07-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang-Woon Kwak ,  Joung-Il Yun ,  Myung-Sun Baek ,  Hae-Chan Kwon ,  Young-Su Kim ,  Hyoung-Soo Lim ,  Nam-Ho Hur

IPC: H04L25/02 ,  H04L1/00 ,  H04L25/03

Abstract: Disclosed herein are a method and apparatus for iterative interference cancellation and channel estimation in a system based on FTN communication including a pilot. Interference of a pilot symbol on a data symbol is estimated, and the estimated interference is eliminated from a sequence of data symbols. When demodulation and channel decoding are performed on the sequence of data symbols, interference between data symbols and interference of a data symbol on a pilot symbol are estimated. Such estimation is repeatedly performed, and as FTN interference is repeatedly estimated and eliminated, channel estimation performance is improved, and through the improved channel estimation performance, the reception performance of the entire system is improved.