公开(公告)号：US20130336365A1

公开(公告)日：2013-12-19

申请号：US13972061

申请日：2013-08-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Chan BANG ,  Tae Joong KIM ,  Jae Heung KIM ,  Jung Im KIM ,  Jong Suk CHAE ,  Hyuck Jae LEE ,  Jae Ryong SHIM ,  Narm Hee LEE

IPC: H04B1/7073

CPC classification number: H04B1/7073 ,  H04B2201/70703 ,  H04J13/0044 ,  H04J13/10 ,  H04J13/20

Abstract: A method for converting source data to a channel-modulated signal having a plurality of pairs of in-phase (I) and quadrature-phase (Q) data in a mobile station, wherein the mobile station uses at least one channel, includes the steps of: a) encoding the source data to generate at least one data part and a control part; b) generating at least one spreading code to be allocated to the channel, wherein each spreading code is selected on the basis of a data rate of the data part and the control part and spreading codes are selected so that two consecutive pairs of the I and Q data are correspondent to two points located on same point or symmetrical with respect to a zero point on a phase domain; and c) spreading the control part and the data part by using the spreading code, to thereby generate the channel-modulated signal.

公开(公告)号：US20240171245A1

公开(公告)日：2024-05-23

申请号：US18511154

申请日：2023-11-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jun Sik KIM ,  Woong Hee LEE ,  Minhoe KIM ,  Taewon SONG ,  Jung Im KIM ,  Soon Gi PARK ,  Sung Cheol CHANG ,  Sun Mi JUN ,  Yong Seouk CHOI

IPC: H04B7/06 ,  H04L5/00 ,  H04W72/21

CPC classification number: H04B7/0626 ,  H04L5/0051 ,  H04W72/21

Abstract: Disclosed is a wireless communication system, specifically, an apparatus and method for configuring a primary cell carrier/secondary cell carrier (PCC/SCC) prioritization only based on extremely partial channel state information in a wireless communication system. Specifically, a method of operating a user equipment (UE) in a wireless communication system includes: transmitting a sounding reference signal (SRS) or channel state information (CSI) to a base station; receiving a signal from the base station on the basis of the SRS or the CSI; and estimating a number of multi-paths using a neural network for the received signal, wherein the estimating of the number of multi-paths includes: re-shaping the received signal; extracting a singular value of the reshaped signal; and estimating the number of multi-paths based on the extracted singular value.

公开(公告)号：US20240137821A1

公开(公告)日：2024-04-25

申请号：US18492479

申请日：2023-10-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Soon Gi PARK ,  Young-Jo KO ,  IL GYU KIM ,  Jung Im KIM ,  Jun Sik KIM ,  Sung Cheol CHANG ,  Sun Mi JUN ,  Yong Seouk CHOI

IPC: H04W36/00

CPC classification number: H04W36/00695

Abstract: Disclosed is a technique for switching from a master node to a secondary node in a communication system. A method of a first communication node may comprise: adding the first communication node as a primary secondary cell (PSCell) to a second communication node through dual connectivity (DC); generating a first user plane path for smart dynamic switching (SDS) and a first instance for supporting the first user plane path according to a request from the second communication node; transmitting information on the first user plane path and the first instance to a terminal; receiving user data based on the first user plane path from the terminal as the first instance; and transmitting the user data to a core network using the first user plane path.

公开(公告)号：US20230397166A1

公开(公告)日：2023-12-07

申请号：US18237404

申请日：2023-08-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Heung KIM ,  Jung Im KIM ,  Kyoung Seok LEE ,  Soo Jung JUNG ,  Seung Chan BANG ,  Byung Han RYU

IPC: H04W68/02 ,  H04W72/23 ,  H04L5/00

CPC classification number: H04W68/025 ,  H04W72/23 ,  H04L5/0053 ,  H04W68/02

Abstract: Provided is a method for transmitting paging information in a cellular system. An object of the method is transmitting paging information which can improve applicability of a limited radio resource by variably and flexibly setting up and mapping a transport channel and a physical channel in order to transmit information notifying start of downlink information from a base station to a terminal in a cellular system for packet transmission. The method includes the steps of: forming a paging channel (PCH) in a transport channel corresponding to generation of paging information; setting a paging indication channel (PICH) based on the paging information and forming the paging indication channel in a radio resource of a physical layer; and allocating the paging channel to the radio resource of the physical layer.

公开(公告)号：US20210092713A1

公开(公告)日：2021-03-25

申请号：US17110346

申请日：2020-12-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Heung KIM ,  Jung Im KIM ,  Kyoung Seok LEE ,  Soo Jung JUNG ,  Seung Chan BANG ,  Byung Han RYU

IPC: H04W68/02 ,  H04L5/00 ,  H04W72/04

Abstract: Provided is a method for transmitting paging information in a cellular system. An object of the method is transmitting paging information which can improve applicability of a limited radio resource by variably and flexibly setting up and mapping a transport channel and a physical channel in order to transmit information notifying start of downlink information from a base station to a terminal in a cellular system for packet transmission. The method includes the steps of: forming a paging channel (PCH) in a transport channel corresponding to generation of paging information; setting a paging indication channel (PICH) based on the paging information and forming the paging indication channel in a radio resource of a physical layer; and allocating the paging channel to the radio resource of the physical layer.

公开(公告)号：US20140126611A1

公开(公告)日：2014-05-08

申请号：US14047435

申请日：2013-10-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Chan BANG ,  Jae Ryong SHIM ,  Ki Chul HAN ,  Jung Im KIM ,  Tae Joong KIM

IPC: H04B1/7097

CPC classification number: H04B1/7097 ,  H04J13/0048 ,  H04J13/102 ,  H04J2013/0037

Abstract: An orthogonal complex spreading method for a multichannel and an apparatus thereof are disclosed. The method includes the steps of complex-summing αn1WM,n1Xn1 which is obtained by multiplying an orthogonal Hadamard sequence WM,n1 by a first data Xn1 of a n-th block and αn2WM,n2Xn2 which is obtained by multiplying an orthogonal Hadamard sequence W1,n2 by a second data Xn2 of a n-th block; complex-multiplying αn1WM,n1Xn1+jαn2WM,n2Xn2 which is summed in the complex type and WM,n3+jPWM,n4 of the complex type using a complex multiplier and outputting as an in-phase information and quadrature phase information; and summing only in-phase information outputted from a plurality of blocks and only quadrature phase information outputted therefrom and spreading the same using a spreading code.

Abstract translation: 公开了一种用于多通道的正交复扩展方法及其装置。 该方法包括以下步骤：通过将正交哈达玛序列WM，n1乘以第n个块的第一数据Xn1和αn2WM，通过将正交哈达马列序列W1相乘得到的n2Xn2获得的αn1WM，n1Xn1， n2由第n个块的第二数据Xn2; 使用复数乘法器复合乘以αn1WM，n1Xn1 +jαn2WM，n2Xn2，其以复数类型和WM，n3 + jPWM，n4求和并作为同相信息和正交相位信息输出; 并且仅从多个块输出的同相信息和仅输出的正交相位信息相加，并使用扩展码进行扩展。