{"title":"An Improved Residual Frequency Synchronization Method for Wireless Communication System","authors":"Yong-An Jung, Sang-Bong Byun, Dong Han, Soo-Hyun Cho, Sung-Hun Lee, J. Kwon","doi":"10.1109/ICUFN57995.2023.10200025","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10200025","url":null,"abstract":"This paper proposes an improved residual frequency offset (RFO) estimation method in the cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) based wireless communication system. The proposed method is based on the sidelink primary synchronization signal (S-PSS) sequences inserted into the sidelink synchronization signal/physical sidelink broadcast channel (S-SS/PSBCH) block used to estimate the synchronization error in the 5G NR sidelink system. The proposed RFO estimation method has a more improved estimation performance than the conventional method. The computer simulation is used to assess the performance of the proposed scheme and to make comparison with the conventional scheme.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125014323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"5G Network Simulator for Network Caching","authors":"Dongju Kim, Joonyoung Lim, Younghwan Yoo","doi":"10.1109/ICUFN57995.2023.10200595","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10200595","url":null,"abstract":"This paper proposes a simulator for network caching research in a hierarchical 5G network. The proposed simulator adopts a modular structure to simply and quickly test new caching policies, and also includes well-known methods such as Leave Copy Everywhere (LCE) and Leave Copy Down (LCD) for performance comparison. The functions of combining existing caching policies and adjusting the number of components enable researchers to easily test their own caching policies. Additionally, the simulator provides the module to test a caching policy based on the Deep Q-Network (DQN). Recently, mobile edge caching (MEC), which stores frequently accessed content at the edge of the network, has been proposed to reduce the backhaul traffic. The proposed simulator also offers a way for evaluating MEC performance in hierarchical 5G wireless networks.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125142582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuna Sim, S. Sin, Ji-Haeng Cho, Kyunam Kim, Sangmi Moon, I. Hwang
{"title":"Cooperative Beam Selection based on Fingerprint Database using User Types in Unmanned Aerial Vehicle Supported Systems","authors":"Yuna Sim, S. Sin, Ji-Haeng Cho, Kyunam Kim, Sangmi Moon, I. Hwang","doi":"10.1109/ICUFN57995.2023.10200328","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10200328","url":null,"abstract":"Unmanned aerial vehicles (UAVs) are attracting attention in the New Radio (NR) system due to their high altitude and mobility features, but high altitude UAVs can be greatly affected by interference between different cells with high line-of-sight (LOS) probabilities. Therefore, in this paper, we propose an algorithm to select the optimal beam to reduce the effect of interference and maximize the transmission efficiency. The proposed algorithm is divided into a process of constructing a user position-based fingerprint database that stores the necessary information and a cooperative beam selection process. As a performance analysis indicator, the Signal-to-Interference-plus-Noise Ratio Cumulative Distribution Function (SINR CDF) was used.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124074647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Comprehensive Study on Blockchain-based Cloud-Native Storage for Data Confidence","authors":"Hannie Zang, JongWon Kim","doi":"10.1109/ICUFN57995.2023.10200136","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10200136","url":null,"abstract":"This paper explores the concept of blockchain-based cloud-native storage, which combines the decentralized and immutable nature of blockchain with the scalability and agility of cloud-native architecture. We discuss the significant contributions of leveraging blockchain and cloud-native concepts in storage systems for edge computing, specifically focusing on data security, reliability, and scalability. Furthermore, we address the challenges associated with implementing blockchain and cloud-native concepts in edge storage systems, including network connectivity and resource constraints. By examining these challenges, we aim to provide insights into the practical considerations and potential solutions for effectively integrating blockchain and cloud-native technologies in edge storage environments.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130086418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Building a Metaverse for Transportation Systems: A Brief Review and Demonstration","authors":"J. Njoku, C. I. Nwakanma, Dong Seong Kim","doi":"10.1109/ICUFN57995.2023.10199405","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10199405","url":null,"abstract":"The prospective applications of extended reality and the digital twin have previously been reviewed for transportation systems. With the current interest in the metaverse, it is necessary to examine ways in which it can help improve transportation systems. Thus, this study provides a brief review of these previous reviews and discusses the potential impact of the metaverse on transportation systems. This study also examines three prospective solutions including; parking spot detection, parking assistance, and lane detection. It also examines two current case studies that employ the metaverse and its technologies for transportation systems, including Hyundai Motorstudio and WayRay’s Holograktor","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130208066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jeahack Lee, Hyeonseong Kim, Sihyeong Park, Yun-Shik Hong, Seokhun Jeon, Byung-Soo Kim
{"title":"Soft-Error Injection System for Processor on FPGA Platform","authors":"Jeahack Lee, Hyeonseong Kim, Sihyeong Park, Yun-Shik Hong, Seokhun Jeon, Byung-Soo Kim","doi":"10.1109/ICUFN57995.2023.10200315","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10200315","url":null,"abstract":"This paper presents a soft-error injection system on the FPGA platform using an ARM Cortex-M3 processor. The system consists of an error injector that generates random numbers using a Fibonacci linear feedback shift register to introduce errors into an application program status register. The efficacy of the soft-error injection system is assessed and validated on an FPGA platform employing Xilinx XCKU115. Additionally, a user interface is created to configure and test the error-injection system. The system is capable of simulating both single-event transient and single-event upset errors, and it can determine the error duration before returning to the previous error-free state. The soft-error injection system is a valuable tool for evaluating the dependability of embedded systems used in industries such as automotive, industrial control, and consumer electronics.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127179568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Akhrorjon Akhmadjon Ugli Rakhmonov, B. Subramanian, Taehun Kim, Jeonghong Kim
{"title":"Airy YOLOv5 for Disabled Sign Detection","authors":"Akhrorjon Akhmadjon Ugli Rakhmonov, B. Subramanian, Taehun Kim, Jeonghong Kim","doi":"10.1109/ICUFN57995.2023.10200853","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10200853","url":null,"abstract":"Designated parking spaces for individuals with disabilities are only meant to be used by vehicles with proper handicapped signage. Real-time monitoring is necessary to ensure that only authorized vehicles are parked in these spaces and to prevent unauthorized vehicles from using them. First, this research proposes to replace the backbone of a baseline YOLOv5 model which has 9 blocks with 6 EfficientNet blocks with less parameters but still have a higher accuracy in detecting disabled signs among other signages on the windshield of cars. Second, to compensate for the loss of blocks we have included an attention mechanism before detection part in our architecture which allows us to focus on the important regions needed for the task. Additionally, we propose to use a better optimizer AdamW to prevent overfitting. Based on these improvements, we have created a new object detector named Airy YOLOv5. To evaluate the effectiveness of our proposed method, a dataset containing images of cars with disabled signage on their windshields will be gathered and labeled. Experiments using this dataset show that our model achieves a better F1 score of 0.67 with 5 percent less parameters compared to the baseline model.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128039870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Read-Rate Improvement in 920MHz RFID System with Circular-Polarized 2D Beam Scan R/W Antenna","authors":"Y. Yamao, Sora Funayama","doi":"10.1109/ICUFN57995.2023.10200725","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10200725","url":null,"abstract":"Radio frequency identification (RFID) is a promising Internet of things (IoT) solution that bring about innovation in supply chain management. However, RFID has a read reliability issue in multipath radio propagation environment. In order to improve the reliability, we proposed a reader/writer (R/W) beam modulating scheme with a moving conductor. By modulating the R/W antenna beam, the multipath propagation structure can be changed and null points caused by standing waves are shifted. Thus, read success rate can be improved by the combination of repeated transmission and selection combining. In this paper, we propose a new 2D beam scan antenna for circular-polarized operation that is necessary for actual RFID systems. It has been confirmed from the simulation that the electric field distribution in a typical storage shelf can be changed by the proposed scheme. A prototype beam modulator with a decentered rotating circular conductor is fabricated and tested. RFID read measurement result shows that the proposed scheme can reduce the dead zone rate to less than half of the normal system.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127619968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of En-route Reassignment of Hospitals for Ambulances","authors":"Junghoon Lee, Soyeon Kim, E. Park","doi":"10.1109/ICUFN57995.2023.10199808","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10199808","url":null,"abstract":"This paper proposes a hospital assignment scheme for ambulances transporting patients, aiming at efficiently re-matching both parties even in the case of a demand surge. Built on top of the minimum cost maximum flow model, the allocation process adjusts link connectivity in the flow graph according to whether a patient can be cured at a hospital, reach within a deadline, and be reallocated to another hospital even while on the move. The prototype implementation using the Java language shows that the proposed scheme can reallocate patients with stable reassignment overhead, with the total moving distance being managed below 4.3 %.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124357998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yongsheng Wang, Yugong Luo, Yanchen Ku, Jia Shi, M. Bian
{"title":"An Interactive Decision-making Method for Autonomous Valet Parking Based on Non-cooperative Complete Information Static Game","authors":"Yongsheng Wang, Yugong Luo, Yanchen Ku, Jia Shi, M. Bian","doi":"10.1109/ICUFN57995.2023.10200863","DOIUrl":"https://doi.org/10.1109/ICUFN57995.2023.10200863","url":null,"abstract":"For the decision-making problem involving the interaction of an autonomous vehicle with other participating vehicles during the process of autonomous valet parking (AVP), an interactive decision-making method is proposed based on non-cooperative complete information static game theory. Firstly, the conflict types that occur between participating vehicles during the AVP process are analyzed, specifically in the intersection scenario and the front of the parking spot scenario within the parking lot. And all conflict modes are systematically summarized based on the inductive method. Then, the non-cooperative complete information static game is adopted to model the vehicle-vehicle interaction process, additionally, an interactive game cost function is designed by integrating driving style, driving safety, and traffic efficiency. Finally, the optimal driving strategy is obtained by solving the Nash equilibrium solution of the non-cooperative complete information static game. Through simulating various diverse vehicle-vehicle interaction scenarios in the parking lot, the experimental results demonstrate that this method dynamically determines correct and reasonable driving strategies and the effectiveness of the proposed method is verified.","PeriodicalId":341881,"journal":{"name":"2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124547008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}