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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Institute of Electronics and Information Engineers
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The Institute of Electronics Engineers of Korea
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Volume & Issues
Volume 52, Issue 12 - Dec 2015
Volume 52, Issue 11 - Nov 2015
Volume 52, Issue 10 - Oct 2015
Volume 52, Issue 9 - Sep 2015
Volume 52, Issue 8 - Aug 2015
Volume 52, Issue 7 - Jul 2015
Volume 52, Issue 6 - Jun 2015
Volume 52, Issue 5 - May 2015
Volume 52, Issue 4 - Apr 2015
Volume 52, Issue 3 - Mar 2015
Volume 52, Issue 2 - Feb 2015
Volume 52, Issue 1 - Jan 2015
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Selection of Cross-layered Retransmission Schemes based on Service Characteristics
Go, Kwang-Chun ; Kim, Jae-Hyun ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 3~9
DOI : 10.5573/ieie.2015.52.5.003
The wireless communication system adopts an appropriate retransmission scheme on each system protocol layer to improve reliability of data transmission. In each system protocol layer, the retransmission scheme operates in independently other layers and operates based on the parameters without reference to end-to-end performance of wireless communication system. For this reason, it is difficult to design the optimal system parameters that satisfy the QoS requirements for each service class. Thus, the performance analysis of wireless communication system is needed to design the optimal system parameters according to the end-to-end QoS requirements for each service class. In this paper, we derive the mathematical model to formulate the end-to-end performance of wireless communication system. We also evaluate the performance at the MAC and transport layers in terms of average spectral efficiency and average transmission delay. Based on the results of performance evaluations, we design the optimal system parameters according to the QoS requirements of service classes. From the results, the HARQ combined with AMC is appropriate for the delay-sensitive service and the ARQ combined with AMC is appropriate for a service that is insensitive to transmission delay. Also, the TCP can be applied for the delay-insensitive service only.
Design of Antenna Array and Hybrid Receiver in Sidehaul System
Moon, Sangmi ; Choe, Hun ; Chu, Myeonghun ; Kim, Daejin ; Kim, Cheol-Sung ; Hwang, Intae ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 10~22
DOI : 10.5573/ieie.2015.52.5.010
Recently, 3rd Generation Partnership Project (3GPP) has developed sidehaul system to cope with the explosively increasing mobile data traffic. The sidehaul system is based on single carrier-frequency division multiple access (SC-FMDA) due to its low peak to average power ratio (PAPR). Also, antenna array is designed to support multiple input multiple output (MIMO) in a restricted space. In this paper, we design the antenna array about uniform linear array (ULA), uniform circular array (UCA) and uniform planar array (UPA), and analysis the performance in sidehaul system. In addition, we propose the novel hybrid receiver full suppression cancellation (FSC) to reduce the interference from neighbor cell in sidehaul system. The proposed receiver can suppress and cancel the interference by combining interference rejection combining (IRC) with successive interference cancellation (SIC).
Design and Performance Analysis of Hybrid Receiver based on System Level Simulation in Backhaul System
Moon, Sangmi ; Choe, Hun ; Chu, Myeonghun ; Kim, Hanjong ; Hwang, Intae ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 23~32
DOI : 10.5573/ieie.2015.52.5.023
The advanced receiver which can manage inter-cell interference is required to cope with the explosively increasing mobile data traffic. 3rd Generation Partnership Project (3GPP) has discussed network assisted interference cancellation and suppression (NAICS) to improve signal-to-noise-plus-interference ratio (SINR) and receiver performance by suppression or cancellation of interference signal from inter-cells. In this paper, we propose the novel hybrid receiver Full Suppression Cancellation (FSC) to reduce the interference from neighbor cell in backhaul system. The proposed receiver can suppress and cancel the interference by combining Interference Rejection Combining (IRC) with Successive Interference Cancellation (SIC). We perform the system level simulation based on 20MHz bandwidth of 3GPP LTE-Advanced system. Simulation results show that the proposed receiver can improve error rate and throughput of conventional system.
Design and Performance Analysis of FSC Receiver for Improvement of D2D Communication in Cellular Network
Moon, Sangmi ; Choe, Hun ; Chu, Myeonghun ; Kim, Hanjong ; Hwang, Intae ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 33~47
DOI : 10.5573/ieie.2015.52.5.033
Cellular Network assisted device-to-device (D2D) communication has been growing to reduce the overload of eNodeB and mitigate the frequency shortage. However, by sharing the uplink frequency resource with the cellular network, the interference between cellular and D2D is increased. In this paper, we propose an advanced receiver for full suppression cancellation (FSC) to reduce the interference between cellular and D2D. The proposed receiver can suppress and cancel the interference by integrating the interference rejection combining (IRC) technique with successive interference cancellation (SIC). We perform a system level simulation based on the 20-MHz bandwidth of the 3GPP LTE-A system. Simulation results show that the proposed receiver can improve SINR, throughput and spectral efficiency compared to conventional receivers.
A Design of a Reconfigurable 4th Order ΣΔ Modulator Using Two Op-amps
Yang, Su-Hun ; Choi, Jeong-Hoon ; Yoon, Kwang Sub ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 51~57
DOI : 10.5573/ieie.2015.52.5.051
In this paper, in order to design the A / D converter with a high resolution of 14 bits or more for the biological signal processing, CMOS delta sigma modulator that is a 1.8V power supply voltage - were designed. we propose a new structure of The fourth order delta-sigma modulator that needs four op amps but we use only two op amps. By using a time -interleaving technique, we can re-construct the circuit and reuse the op amps. Also, we proposed a KT/C noise reduction circuit to reduce the thermal noise from a noisy resistor. We adjust the size of sampling capacitor between sampling time and integrating time, so we can reduce almost a half of KT/C noise. The measurement results of the chip is fabricated using a Magna 0.18um CMOS n-well1 poly 6 metal process. Power consumption is
from a 1.8V supply voltage. The peak SNDR is measured as a 75.7dB and 81.3dB of DR at 1kHz input frequency and 256kHz sampling frequency. Measurement results show that KT/C noise reduction circuit enhance the 3dB of SNDR. FOM of the circuit is calculated to be 142dB and 41pJ / step.
A High-Voltage Compliant Neural Stimulation IC for Implant Devices Using Standard CMOS Process
Abdi, Alfian ; Cha, Hyouk-Kyu ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 58~65
DOI : 10.5573/ieie.2015.52.5.058
This paper presents the design of an implantable stimulation IC intended for neural prosthetic devices using
standard CMOS technology. The proposed single-channel biphasic current stimulator prototype is designed to deliver up to 1 mA of current to the tissue-equivalent
load using 12.8-V supply voltage. To utilize only low-voltage standard CMOS transistors in the design, transistor stacking with dynamic gate biasing technique is used for reliable operation at high-voltage. In addition, active charge balancing circuit is used to maintain zero net charge at the stimulation site over the complete stimulation cycle. The area of the total stimulator IC consisting of DAC, current stimulation output driver, level-shifters, digital logic, and active charge balancer is
and is suitable to be applied for multi-channel neural prosthetic devices.
Memory Reduction Method of DIT-based IFFT Bit-Reversal
Kim, Jun-Ho ; Piao, Zheyan ; Cho, Kyung-Ju ; Chung, Jin-Gyun ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 66~73
DOI : 10.5573/ieie.2015.52.5.066
IFFT is one of the key components in OFDM-based communication systems. In this paper, we propose a new memory efficient IFFT design method for OFDM-based communication systems, based on a mapping of three IFFT input signals which consist of modulated data, pilot and null signals. The proposed method focuses on reducing the memory size in the bit-reversal block which requires the largest number of memory cells in IFFT architectures. To reduce the memory size, we propose a selection mapping method based on decimation-in-time (DIT) algorithm. It is shown that the proposed method achieves a memory reduction of about 50% compared to conventional methods.
Evaluation of EM Susceptibility of an PLL on Power Domain Networks of Various Printed Circuit Boards
Hwang, Won-Jun ; Wee, Jae-Kyung ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 74~82
DOI : 10.5573/ieie.2015.52.5.074
As the complexity of an electronic device and the reduction of its operating voltage is progressing, susceptibility test of the chip and module for internal or external noises is essential. Although the immunity compliance of the chip was served with IEC 62132-4 Direct Power Injection method as an industry standard, in fact, EM immunity of the chip is influenced by their Power Domain Network (PDN). This paper evaluates the EM noise tolerance of a PLL and compares their noise transfer characteristics to the PLL on various PCB boards. To make differences of the PDNs of PCBs, various PCBs with or without LDO and with several types of capacitors are tested. For evaluation of discrepancies between EM characteristics of an IC only and the IC on real boards, the analysis of the noise transfer characteristics according to the PDNs shows that it gives important information for the design having robust EM characteristics. DPI measurement results show that greatly improved immunity of the PLL in the low-frequency region according to using the LDO and a frequency change of the PLL according to the DPI could also check with TEM cell measurement spectrum.
Accuracy Improvement of Frame Interpolation Algorithm using Wedge-shaped Block Partitioning
Jeong, Jae Heon ; Jung, Ho Sun ; Sunwoo, Myung Hoon ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 85~91
DOI : 10.5573/ieie.2015.52.5.085
This paper presents a novel frame rate up-conversion (FRUC) algorithm. Existing algorithms, in general, employ rectangular blocks for motion estimation and arbitrary shape of an actual object region cannot be precisely represented. On the other hand, the proposed wedge-shaped block partitioning algorithm partitions a rectangular block into two wedge-shaped blocks using the texture information, which makes better approximation for an actual object region. The wedge-shaped block partitioning algorithm as well as the adaptive motion vector prediction algorithm is used to reliably estimate the actual motion. Experimental results show that the proposed FRUC algorithm is superior to existing algorithms up to 1.988dB in PSNR and 0.0167 in SSIM comparisons.
Random Access Phase Optimal Allocation Method Through Pattern Correction in WBAN
Lee, ChangHo ; Kim, Kanghee ; Kim, JiWon ; Choi, SangBang ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 92~105
DOI : 10.5573/ieie.2015.52.5.092
WBAN (Wireless Body Area Network) is a network which is to consistently monitor body signals with implanted or attached sensor nodes. Especially, nodes that are used in medical services have to operate with low power consumption since they are hard to replace, and have to guarantee high data rate and low transmission delay for consistent signal monitor. In this paper, we propose an algorithm that aims to reduce transmission delay and power consumption, and guarantees stable throughput, by assuming the number of active nodes, and followed by dynamically adjusting the random access period and transmission possibilities in a superframe. The assumed number of active nodes may be incorrect since it only relies on the channel status of a previous superframe. Therefore, we assume the number of active nodes and define a pattern. And revise the number of the active nodes with the defined pattern. To evaluate the performance of the proposed algorithm, we have implemented a WBAN environment with the MATLAB. The simulation results show that the proposed algorithm provides better throughput, low power consumption, and low transmission delay when compared to the slotted ALOHA of the IEEE 802.15.6.
Buffer Management Algorithm for Performance Improvement in WBAN
Kim, JiWon ; Kim, Kanghee ; Lee, ChangHo ; Choi, SangBang ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 106~114
DOI : 10.5573/ieie.2015.52.5.106
Wireless Body Area Network(WBAN) is a network standard around a human body which connects various medical sensor and devices It has to satisfy various demands such as data transmission rate, priority, and delay time. In this paper, considering a data priority and transmission delay time, is proposed to improve efficiency of WBAN service depending on congestion status of network. The proposed algorithm operates with adapted data removal probability according to data priority when the hub buffer is congested than before. And in the case of lower congestion within the hub buffer data is served considering data delay time. Through the comparison with other existing scheduling algorithms, it is confirmed that quality of WBAN service is improved due to lower data loss rate of medical data and less delay time in the proposed algorithm.
Selective Incremental Learning for Face Tracking Using Staggered Multi-Scale LBP
Lee, Yonggeol ; Choi, Sang-Il ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 115~123
DOI : 10.5573/ieie.2015.52.5.115
The incremental learning method performs well in face face tracking. However, it has a drawback in that it is sensitive to the tracking error in the previous frame due to the environmental changes. In this paper, we propose a selective incremental learning method to track a face more reliably under various conditions. The proposed method is robust to illumination variation by using the LBP(Local Binary Pattern) features for each individual frame. We select patches to be used in incremental learning by using Staggered Multi-Scale LBP, which prevents the propagation of tracking errors occurred in the previous frame. The experimental results show that the proposed method improves the face tracking performance on the videos with environmental changes such as illumination variation.
Semi-Auto Camera Calibration Method for 3D Information Generation
Kim, Hyungtae ; Paik, Joonki ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 127~135
DOI : 10.5573/ieie.2015.52.5.127
In this paper, we propose the semi-auto camera calibration method including user input. The proposed method estimates the vanishing points using user defined reference lines and defines the constraint for reducing outlier in vanishing points estimation process. The proposed camera calibration method based on both algebraic and geometric method improves a calibration performance for difficult condition, which represents that existing method can't calibrate a image. Experimental results show that the proposed method calibration accuracy higher than existing method.
Vehicle Recognition using Non-negative Tensor Factorization
Ban, Jae Min ; Kang, Hyunchul ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 136~146
DOI : 10.5573/ieie.2015.52.5.136
The active control of a vehicle based on vehicle recognition is one of key technologies for the intelligent vehicle, and the part-based image representation is necessary to recognize vehicles with only partial shapes of vehicles especially in urban scene where occlusions frequently occur. In this paper, we implemented a part-based image representation scheme using non-negative tensor factorization(NTF) and realized a robust vehicle recognition system using the NTF feature. The result shows that the proposed method gives more intuitive part-based representation and more robust recognition in urban scene.
Coding Unit-level Multi-loop Encoding Method based on JND for Perceptual Coding
Lim, Woong ; Sim, Donggyu ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 147~154
DOI : 10.5573/ieie.2015.52.5.147
In this paper, we employed a model which defines the sensitivity according to the background luminance, so called JND (Just Noticeable Difference), and applied to the video coding. The proposed method finds out the maximum possible quantization parameter for the current unit based on the threshold of JND model and reduce the bitrate with similar perceptual quality. It selects the higher quantization parameter and reduce the bitrate when the reconstructed signal which is coded with higher quantization parameter is in a range of allowance based on the JND threshold, i.e. the signal has the similar perceptual quality compared to that is coded with the initial quantization parameter. The proposed algorithm was implemented on HM16.0, which is a reference software of the latest video coding standard HEVC (High Efficiency Video Coding) and the coding performance was evaluated. Compared to HM16.0, the proposed algorithm achieved maximum 20.21% and 6.18% of average bitrate reduction with the similar perceptual quality.
A Design of Pipelined-parallel CABAC Decoder Adaptive to HEVC Syntax Elements
Bae, Bong-Hee ; Kong, Jin-Hyeung ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 155~164
DOI : 10.5573/ieie.2015.52.5.155
This paper describes a design and implementation of CABAC decoder, which would handle HEVC syntax elements in adaptively pipelined-parallel computation manner. Even though CABAC offers the high compression rate, it is limited in decoding performance due to context-based sequential computation, and strong data dependency between context models, as well as decoding procedure bin by bin. In order to enhance the decoding computation of HEVC CABAC, the flag-type syntax elements are adaptively pipelined by precomputing consecutive flag-type ones; and multi-bin syntax elements are decoded by processing bins in parallel up to three. Further, in order to accelerate Binary Arithmetic Decoder by reducing the critical path delay, the update and renormalization of context modeling are precomputed parallel for the cases of LPS as well as MPS, and then the context modeling renewal is selected by the precedent decoding result. It is simulated that the new HEVC CABAC architecture could achieve the max. performance of 1.01 bins/cycle, which is two times faster with respect to the conventional approach. In ASIC design with 65nm library, the CABAC architecture would handle 224 Mbins/sec, which could decode QFHD HEVC video data in real time.
Implementation of a Re-coloring System on Monitor for Red-green Color Vision Deficiency
Cho, Kyung-Seon ; Ko, Sung-Jea ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 165~173
DOI : 10.5573/ieie.2015.52.5.165
People with color vision deficiency (CVD) experience difficulties in discriminating some color combinations and color differences due to the abnormal retinal cone systems. While there exist smartphones with a re-coloring function for CVD, monitors do not provide the re-coloring function. In this paper, we propose a new re-coloring algorithm that adjusts the displayed colors for CVD using a color controller embedded in the monitor. The proposed algorithm converts the hue and saturation in HSV color space, according to the type and strength of the color deficiency. The results of the performance evaluation with a certain number of people with CVD show that the proposed system can convert colors imperceptible into perceptible.
Underwater Target Information Estimation using Proximity Sensor
Kim, JungHoon ; Yoon, KyungSik ; Seo, IkSu ; Lee, KyunKyung ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 174~180
DOI : 10.5573/ieie.2015.52.5.174
In this paper, we propose the passive sonar signal processing technique for estimating target information using proximity sensor. This algorithm is performed by single sensor which is constituted underwater sensor network and has a hierarchical structure. The estimated parameter is the velocity, the depth, the distance and bearing at CPA situations and we can improve the accuracy of signal processing techniques through having a hierarchical structure. We verify the performance of the proposed method by computer simulation and then we check the result that 20% error can be occurred in maximum detectable range. We also confirm that proposed method has the reliability in the actual sea environment through the sea experiment.
Efficient Implementation of LED Current-voltage Source and Measurement System Using Single Power
Park, Chang Hee ; Ahn, Tae-Young ; Cho, Sung Ho ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 183~189
DOI : 10.5573/ieie.2015.52.5.183
In this paper, we propose an efficient implementation method that current-voltage sourcing and measuring for LED using (+) single power. this method has the advantage of reducing the error of the circuit and calibration of system, and also improving the complexity of hardware than the method of using a (+)(-) current or voltage sourcing and measuring.
GPS/INS Fusion Using Multiple Compensation Method Based on Kalman Filter
Kwon, Youngmin ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 190~196
DOI : 10.5573/ieie.2015.52.5.190
In this paper, we propose multiple location error compensation algorithm for GPS/INS fusion using kalman filter and introduce the way to reduce location error in 9-axis navigation devices for implementing inertial navigation technique. When evaluating location, there is an increase of location error. So navigation systems need robust algorithms to compensate location error in GPS/INS fusion. In order to improve robustness of 9-axis inertial sensor(mpu-9150) over its disturbance, we used tilt compensation method using compensation algorithm of acceleration sensor and Yaw angle compensation to have exact azimuth information of the object. And it shows improved location result using these methods combined with kalman filter.
Reliability Improvement of the Electro Optical Tracking System by using DLC Films
Shim, Bo-Hyun ; Jo, Hee-Jin ; Kim, Jang-Eun ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 197~205
DOI : 10.5573/ieie.2015.52.5.197
The Diamond Like Carbon(DLC) films for the Electro Optical Tracking System(EOTS) by using Plasma Enhanced Chemical Vapor Deposition(PECVD) method is presented. We achieve that the DLC films can reduce the surface delamination of thermal observation sensor front window due to the high hardness, low friction and chemical inertness which is comparable to a Si film. According to our experiment results, DLC films can be used for various electro optical systems to eliminate surface delamination.
Image Tracking Interference Minimize of Electro Optical Tracking System by MgF
Nano Structure Antireflective Coating Films
Shim, Bo-Hyun ; Jo, Hee-Jin ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 206~213
DOI : 10.5573/ieie.2015.52.5.206
An omni-directional, graded-index and textured ZnO nanorods with
anti-reflective(AR) coating films for the electro optical tracking system(EOTS) by e-beam evaporation method are presented. we achieved that the graded index structure can minimize image tracking interference of EOTS which is comparable to a general AR coating films. Optimized ZnO nanorods with
AR coating films lead to decreasing Fresnel reflection by gradient refractive index. According to our experiment results, ZnO nanorods with
AR coating films can be used for various electro optical system to improve the optical performance.
Robust Estimation Algorithm for Switching Signal and State of Discrete-time Switched Linear Systems
Lee, Chanhwa ; Shim, Hyungbo ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 214~221
DOI : 10.5573/ieie.2015.52.5.214
In this paper, we present robust estimation and detection algorithms for discrete-time switched linear systems whose output measurements are corrupted by noises. First, a mode estimation algorithm is proposed based on the minimum distance criterion. Then, state variables are also observed under the active mode estimate. Second, a detection algorithm is constructed to detect the mode switching of the switched system. With the boundedness of measurement noise, the proposed estimation algorithm returns the exact active mode and approximate state information of the switched system. In addition, the detection algorithm can detect the switching time within a pre-determined time interval after the actual switching occurred.
Large-scale Virtual Power Plant Management Method Considering Variable and Sensitive Loads
Park, Yong Kuk ; Lee, Min Goo ; Jung, Kyung Kwon ; Lee, Yong-Gu ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 225~234
DOI : 10.5573/ieie.2015.52.5.225
Nowadays a Virtual Power Plant (VPP) represents an aggregation of distributed energy resource such as Distributed Generation (DG), Combined Heat and Power generation (CHP), Energy Storage Systems (ESS) and load in order to operate as a single power plant by using Information and Communication Technologies, ICT. The VPP has been developed and verified based on a single virtual plant platform which is connected with a number of various distributed energy resources. As the VPP's distributed energy resources increase, so does the number of data from distributed energy. Moreover, it is obviously inefficient in the aspects of technique and cost that a virtual plant platform operates in a centralized manner over widespread region. In this paper the concept of the large-scale VPP which can reduce a error probability of system's load and increase the robustness of data exchange among distributed energy resources will be proposed. In addition, it can directly control and supervise energy resource by making small size's virtual platform which can make a optimal resource scheduling to consider of variable and sensitive load in the large-scale VPP. It makes certain the result is verified by simulation.
Bug Reports Attribute Analysis for Fixing The Bug on The Internet of Things
Knon, Ki Mun ; Jeong, Seong Soon ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 5, 2015, Pages 235~241
DOI : 10.5573/ieie.2015.52.5.235
Nowadays, research and industry on the internet of things is rapidly developing. Bug fixed field of the Software development related internet of things is a very important things. In this study, we analyze the properties that can affect what the bug fix-time by analyzing the time required to fix a bug associated with the Internet of Things. Using the k-NN classification method based on the attribute information to be classified as bug reports. Extracts a bug report based on the results of a similar property. Bug fixed by calculating the time of a similar bug report predicts the fix-time for new bugs. Depending on the prediction of the properties that affect the bug correction time, the properties of os, component, reporter, and assignee showed the best prediction accuracy.