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Patent Agency Ranking
公开(公告)号：US11184025B2
公开(公告)日：2021-11-23
申请号：US17159681
申请日：2021-01-27
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
Inventor： Sang-Hyo Kim , Gi Yoon Park , Ok-Sun Park , Hyunjae Lee , Hyosang Ju , Jaesheung Shin
Abstract: An LDPC decoding method of a received signal including a plurality of received symbols is provided. A decoding apparatus selects a perturbation space in which perturbation is to be performed based on a code length of the received signal and a maximum number of perturbation rounds indicating a number of perturbation rounds that can be performed, and performs a perturbation round. The decoding apparatus performs perturbation on a corresponding received symbol among the plurality of received symbols in each perturbation round, and decodes the received signal on which the perturbation has been performed. The decoding apparatus determines that decoding is successful when there is a perturbation round in which a decoding result of the received signal satisfies a predetermined condition.
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公开(公告)号：US20170201362A1
公开(公告)日：2017-07-13
申请号：US15403498
申请日：2017-01-11
Inventor： Ok-Sun Park , Cheulsoon Kim , Gi Yoon Park , Changhee Lee
Abstract: In a system supporting narrowband Internet of things (NB-IoT), a terminal maps an uplink reference signal to a plurality of resource elements in a scheduled resource allocation unit, and transmits the uplink reference signal mapped to the plurality of resource elements. Here, the scheduled resource allocation unit includes a first number of contiguous slots in a time domain and a second number of contiguous subcarriers in a frequency domain.
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3.发明授权公开(公告)号：US10004089B2
公开(公告)日：2018-06-19
申请号：US15192328
申请日：2016-06-24
Inventor： Changhee Lee , Taesoo Kwon , Jae Heung Kim , Jung-Im Kim , Ok-Sun Park , JaeSheung Shin , Sung-Min Oh , Hyun-yong Hwang
CPC classification number: H04W74/0841 , H04W74/006
Abstract: A base station infers a random access failure rate depending on a random access collision of terminals performing random access and controls a random access opportunity of a terminal that fails the random access by using the random access failure rate of each terminal. Also, information for the controlled random access opportunity is transmitted to the terminal that fails the random access.
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公开(公告)号：US10447445B2
公开(公告)日：2019-10-15
申请号：US15403498
申请日：2017-01-11
Inventor： Ok-Sun Park , Cheulsoon Kim , Gi Yoon Park , Changhee Lee
Abstract: In a system supporting narrowband Internet of things (NB-IoT), a terminal maps an uplink reference signal to a plurality of resource elements in a scheduled resource allocation unit, and transmits the uplink reference signal mapped to the plurality of resource elements. Here, the scheduled resource allocation unit includes a first number of contiguous slots in a time domain and a second number of contiguous subcarriers in a frequency domain.
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公开(公告)号：US10172123B2
公开(公告)日：2019-01-01
申请号：US15014143
申请日：2016-02-03
Inventor： Ji Hyung Kim , Ok-Sun Park , Moon-Sik Lee , Seung Chan Bang
Abstract: Provided are a communication method based on device's property and an apparatus for allocating a resource by using the method. Devices are classified based on the device's property and a signal including information based on the resource allocation to the devices is transmitted to the devices. Data are received from a device through the allocated resource. Here, the devices transmitting pilot signals including device data values corresponding to preset expected reference data information transmit data through the allocated resource.
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