公开(公告)号：US09954754B2

公开(公告)日：2018-04-24

申请号：US14928473

申请日：2015-10-30

Applicant: Electronics and Telecommunications Research Institute ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byung-Jae Kwak ,  June-Koo Rhee ,  Junhyuk Kim ,  Kyounghye Kim

IPC: H04W4/00 ,  H04L12/26 ,  H04W74/08

CPC classification number: H04L43/10 ,  H04W74/0816

Abstract: Provided are a random access method and a terminal supporting the random access method. The terminal may monitor a state of a channel, when the state of the channel is idle, attempt a packet transmission at a first packet transmission probability, and transmit a packet including the first packet transmission probability.

公开(公告)号：US09699747B2

公开(公告)日：2017-07-04

申请号：US14852375

申请日：2015-09-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byung-Jae Kwak ,  Kapseok Chang ,  June-Koo Rhee ,  Junhyuk Kim ,  Kyounghye Kim

IPC: H04J3/06 ,  H04W56/00 ,  H04L12/807 ,  H04W72/00

CPC classification number: H04W56/001 ,  H04L47/27 ,  H04W72/00

Abstract: Disclosed is a synchronization method in a distributed wireless communication system and a terminal supporting the same. In a synchronization method, a terminal splits a synchronization period into a plurality of backoff slots and randomly selects a backoff counter using the contention window. Furthermore, the terminal checks whether a channel is idle during at least one of the plurality of backoff slots and changes the backoff counter based on a result of the check.