公开(公告)号：US20250142572A1

公开(公告)日：2025-05-01

申请号：US18930074

申请日：2024-10-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyung Yul CHEON ,  Hye Yeon KWON ,  Kyung Won KIM ,  Seung Keun PARK ,  Eun Sook JIN

IPC: H04W72/20 ,  H04B17/318 ,  H04L5/00 ,  H04W56/00 ,  H04W72/1273

Abstract: The present disclosure relates to a method for determining whether a resource is occupied in a mobile communication system and a device therefor. A method for determining a resource occupancy in a mobile communication network according to an embodiment of the present disclosure may include calculating an occupancy threshold value based on received power for a transmission-limited resource; and based on a reference signal correlation power value for a specific resource block and the occupancy threshold value, determining whether the specific resource block is occupied.

公开(公告)号：US20150207593A1

公开(公告)日：2015-07-23

申请号：US14589328

申请日：2015-01-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyung Yul CHEON ,  Eun Sook JIN ,  Chang Joo KIM

IPC: H04L1/16 ,  H04L27/26 ,  H04L1/18 ,  H04W74/08

CPC classification number: H04L27/2627 ,  H04L1/1812 ,  H04L1/1845 ,  H04L27/2647 ,  H04W74/0825

Abstract: A method and apparatus of an effective and reliable retransmission based on soft combining when using orthogonal frequency division multiplexing (OFDM) modulation technique in a contention based access system. The method includes receiving a data signal from a transmission node, performing soft combining the valid section part of the data signal which have been previously received and the data signal currently received, determining a collision section of the data signal which is currently received, and saving a valid section part except the collision section of the data signal which is currently received in a buffer. In the contention based access system that uses OFDM modulation technique, in case that data signal reception failure occurs due to a transmission collision, the valid part of the received data signal may be detected and effectively applied to the soft combining, and consequently, the reception probability of data signal can be increased.

Abstract translation: 一种在基于竞争的接入系统中使用正交频分复用（OFDM）调制技术时，基于软组合的有效且可靠的重传的方法和装置。 该方法包括从发送节点接收数据信号，对先前接收到的数据信号的有效部分部分和当前接收的数据信号进行软组合，确定当前接收到的数据信号的冲突部分并保存 除了当前在缓冲器中接收的数据信号的冲突部分之外的有效部分部分。 在使用OFDM调制技术的基于争用的接入系统中，在由于传输冲突而发生数据信号接收失败的情况下，接收到的数据信号的有效部分可以被检测并有效地应用于软合并，因此接收 可以增加数据信号的概率。