公开(公告)号：US20150117270A1

公开(公告)日：2015-04-30

申请号：US14520401

申请日：2014-10-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Byung Jang JEONG ,  Sung Hyun HWANG ,  Hoi Yoon JUNG ,  Jae Ick CHOI

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

CPC classification number: H04L5/1461 ,  H04B7/2656 ,  H04L5/0007 ,  H04L5/0069 ,  H04L5/1469 ,  H04W72/0446

Abstract: Disclosed are a method and an apparatus for determining a Guard Period (GP) in a Time Division Duplexing (TDD) system. A communication method based on Time Division Duplexing (TDD) includes: determining, by a base station, a guard period based on information on a distance between user equipment and the base station; and performing, by the base station, downlink transmission to the user equipment based on the determined guard period, wherein the guard period is determined based on one of a default guard period mode, a reduced guard period mode, and a zero guard period mode, and the reduced guard period mode is a mode for setting a reduced guard period, which is shorter than the default guard period set based on the default guard period mode, and the zero guard period mode is a mode for setting a length of the guard period to 0.

Abstract translation: 公开了一种用于在时分双工（TDD）系统中确定保护周期（GP）的方法和装置。 基于时分双工（TDD）的通信方法包括：基站基于用户设备与基站之间的距离的信息确定保护周期; 并且基于所确定的保护周期，由所述基站对所述用户设备进行下行链路传输，其中，所述保护周期是基于默认保护周期模式，减小保护周期模式和零保护周期模式之一来确定的， 并且减小的保护周期模式是用于设置比基于默认保护时段模式设置的默认保护时段短的保护时段的模式，并且保护保护周期模式是用于设置保护时段的长度的模式 到0。

公开(公告)号：US20250039933A1

公开(公告)日：2025-01-30

申请号：US18785859

申请日：2024-07-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Hoi Yoon JUNG ,  Sung-Ik PARK ,  Nam Ho HUR

IPC: H04W74/0816 ,  H04L27/26 ,  H04W74/08 ,  H04W92/18

Abstract: A method of a first terminal may comprise: receiving a higher layer message including basic sidelink synchronization signal block (S-SSB) information on a basic S-SSB transmitted in an unlicensed band; obtaining a channel occupancy time (COT) through a listen-before-talk (LBT) procedure in the unlicensed band; and transmitting COT information including additional S-SSB configuration information to other terminals, wherein the basic S-SSB information includes information on a transmission occasion of the basic S-SSB and information on a frequency of the basic S-SSB, and the additional S-SSB configuration information includes information for transmission of an additional S-SSB that is transmitted in addition to the basic S-SSB within the COT.

公开(公告)号：US20180323917A1

公开(公告)日：2018-11-08

申请号：US15769897

申请日：2016-12-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Sun UM ,  Hoiyoon JUNG ,  Seung Keun PARK ,  Sungjin YOO

IPC: H04L5/00 ,  H04W72/14 ,  H04W16/14 ,  H04W72/04

CPC classification number: H04L5/00 ,  H04L27/26 ,  H04W72/12 ,  H04W84/04 ,  H04W84/12

Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.

公开(公告)号：US20180110090A1

公开(公告)日：2018-04-19

申请号：US15562005

申请日：2016-01-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Kyu Min KANG ,  Seung Keun PARK ,  Jae Cheol PARK ,  Sung Jin YOO ,  Dong Hun LEE ,  Hoi Yoon JUNG ,  Su Na CHOI ,  Sung Hyun HWANG

IPC: H04W76/16 ,  H04W74/08 ,  H04W72/12 ,  H04W16/14 ,  H04W28/06 ,  H04W72/04

Abstract: The present invention relates to a device and method for allocating a coexistence resource in an unlicensed band. The device according to the present invention comprises: a frame configuration unit for configuring a subframe in which data and a reference signal for a channel in an unlicensed band are allocated, and allocating a part of the symbols of the subframe as a coexistence resource; a signal detection unit for detecting a signal of another LTE system or Wi-Fi system during a transmission idle period where the coexistence resource is allocated; and a transmission processing unit which, when the signal of another system is detected during the transmission idle period, does not occupy a resource for the next subframe, and when the occupation of the coexistence resource by the another system has ended, occupies the resource for the next subframe.

公开(公告)号：US20180092128A1

公开(公告)日：2018-03-29

申请号：US15565141

申请日：2016-03-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Sung Jin YOO ,  Hoi Yoon JUNG ,  Seung Keun PARK

IPC: H04W74/08 ,  H04W72/12 ,  H04W74/00 ,  H04W16/14 ,  H04W72/04

CPC classification number: H04W74/0825 ,  H04W16/14 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1289 ,  H04W74/006 ,  H04W74/0808

Abstract: The present invention relates to a method for transmitting uplink data in a spectrum sharing wireless communication system wherein, in order to enhance uplink transmission efficiency in an LTE-U service, clear channel assessment (CCA) is performed on a user terminal so as to consider the hidden node problem, and channel occupation based on an uplink signal of another terminal is considered, wherein applied are: a method for generating and transmitting a random backoff counter value at a base station so that all terminals can equally use a channel connection parameter needed for transmitting an uplink subframe in an unlicensed band; and a downlink controlling method for scheduling an uplink multi-subframe.

公开(公告)号：US20170048884A1

公开(公告)日：2017-02-16

申请号：US15234278

申请日：2016-08-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hoi Yoon JUNG ,  Sung Jin YOO ,  Jung Sun UM ,  Seung Keun PARK

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0053 ,  H04L5/001 ,  H04L27/0006 ,  H04W72/042

Abstract: Disclosed is a scheduling method for a communication network supporting an unlicensed band. An operation method of a user equipment (UE) may comprise obtaining a control channel from a partial subframe having a length of less than 1 millisecond in an unlicensed band; obtaining scheduling information from the control channel; and obtaining a data channel indicated by the scheduling information from the partial subframe. Therefore, performance of the communication network can be enhanced.

Abstract translation: 公开了一种支持非许可频带的通信网络的调度方法。 用户设备（UE）的操作方法可以包括在非许可频带中从具有小于1毫秒的长度的部分子帧获得控制信道; 从控制信道获取调度信息; 以及从所述部分子帧获取由所述调度信息指示的数据信道。 因此，可以提高通信网络的性能。

公开(公告)号：US20170048828A1

公开(公告)日：2017-02-16

申请号：US15234121

申请日：2016-08-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Sun UM ,  Hoi Yoon JUNG ,  Sung Jin YOO ,  Seung Keun PARK

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

Abstract: Disclosed are operation methods of a communication node in a network supporting licensed and unlicensed bands. An operation method of a user equipment (UE) may comprises receiving, from a base station, a physical downlink control channel (PDCCH) including downlink control information (DCI) in a subframe n−1 of an unlicensed band; decoding the DCI using a common radio network temporary identifier (RNTI); and identifying the number of symbols of the subframe n−1 or a subframe n based on the decoded DCI. Therefore, a performance of the network can be enhanced.

Abstract translation: 公开了支持许可和未授权频带的网络中的通信节点的操作方法。 用户设备（UE）的操作方法可以包括从基站接收在非许可频带的子帧n-1中包括下行链路控制信息（DCI）的物理下行链路控制信道（PDCCH）; 使用公共无线电网络临时标识符（RNTI）对DCI进行解码; 以及基于解码的DCI来识别子帧n-1或子帧n的符号数。 因此，可以提高网络的性能。

公开(公告)号：US20140162715A1

公开(公告)日：2014-06-12

申请号：US13938935

申请日：2013-07-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Suk PAK ,  Sung Jin YOO ,  Sang Won KIM ,  Jung Sun UM ,  Byung Jang JEONG

IPC: H04W72/10

CPC classification number: H04W72/085 ,  H04W16/14 ,  H04W64/00

Abstract: The present invention provides a channel information providing method, a channel information providing database server, and a channel information providing system which receive channel quality information from a cognitive radio terminal which receives channel information based on position information and efficiently use channels using the received information. A channel information providing method which uses a database server to provide channel information to a cognitive radio terminal based on position information includes providing channel information to at least one cognitive radio terminal; receiving collected information regarding a quality of the channel from the at least one cognitive radio terminal; and determining to update the channel information provided in the providing using the information received in the receiving.

Abstract translation: 本发明提供了一种信道信息提供方法，信道信息提供数据库服务器和信道信息提供系统，其从认知无线终端接收信道质量信息，所述认知无线终端基于位置信息接收信道信息，并使用所接收的信息有效地使用信道。 基于位置信息使用数据库服务器向认知无线终端提供频道信息的频道信息提供方法包括向至少一个认知无线电终端提供频道信息; 从所述至少一个认知无线电终端接收关于所述信道的质量的收集的信息; 以及确定使用在所述接收中接收到的信息来更新所述提供中提供的信道信息。

公开(公告)号：US20130336175A1

公开(公告)日：2013-12-19

申请号：US13912854

申请日：2013-06-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Sun UM ,  Byung Jang JEONG ,  Sang Won KIM ,  Sung Jin YOO ,  Jae Ick CHOI

IPC: H04L5/14

CPC classification number: H04L5/14 ,  H04L5/0032 ,  H04W16/14

Abstract: Provided is a method for duplex in a cognitive radio communication system, including: collecting radio environment information including information of usable radio resources; determining a duplex scheme for each radio resource based on the radio environment information; and allocating at least one of the radio resources to information to be transmitted and received, depending on characteristics of the information.

Abstract translation: 提供了一种认知无线电通信系统中的双工方法，包括：收集包括可用无线电资源信息的无线环境信息; 基于所述无线电环境信息确定每个无线电资源的双工方案; 以及根据所述信息的特征，将所述无线电资源中的至少一个分配给要发送和接收的信息。

公开(公告)号：US20130163575A1

公开(公告)日：2013-06-27

申请号：US13627319

申请日：2012-09-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin Suk PAK ,  Jung Sun UM ,  Gwang Zeen KO ,  Sung Jin YOO ,  Sang Won KIM ,  Byung Jang JEONG

IPC: H04W84/12 ,  H04L12/413

CPC classification number: H04W74/0808 ,  H04W72/042 ,  H04W84/12

Abstract: Disclosed is a contention based channel occupying method in a wireless network using a plurality of channels, including: acquiring, by terminals that are incapable of transmitting a data frame through primary contention, occupation channel information from a terminal that transmits the data frame through the primary contention; verifying, by the terminals, an occupiable channel based on the occupation channel information; and performing, by the terminals, secondary contention in the occupiable channel.

Abstract translation: 公开了一种使用多个信道的无线网络中的基于竞争的信道占用方法，包括：通过主要争用不能发送数据帧的终端从通过主要发送数据帧的终端获取占用信道信息 争用 基于所述占用频道信息，由所述终端验证占用频道; 并且由终端执行在占用信道中的二次争用。