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Proactive Congestion Control by Fast Optical Switching Within 1-ms Delay at Mobile Backhaul Utilizing Traffic Data Volume 利用流量数据量，在移动回程 1 毫秒延迟内通过快速光交换实现主动拥塞控制
IF 0.3
IEICE Communications Express Pub Date : 2024-03-09 DOI: 10.23919/comex.2024XBL0055
Yuka Okamoto;Hirotaka Ujikawa;Kota Asaka;Tatsuya Shimada;Tomoaki Yoshida
{"title":"Proactive Congestion Control by Fast Optical Switching Within 1-ms Delay at Mobile Backhaul Utilizing Traffic Data Volume","authors":"Yuka Okamoto;Hirotaka Ujikawa;Kota Asaka;Tatsuya Shimada;Tomoaki Yoshida","doi":"10.23919/comex.2024XBL0055","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0055","url":null,"abstract":"The development and introduction of real-time remote control of robots using mobile NWs is expected. To realize this control, a network configuration in which the User Plane Function (UPF) and Mobile Edge Computing (MEC) are located near the Central Unit (CU) is considered. If traffic exceeds the processing capability of the UPF, there is the concern of congestion. In this paper, we propose and demonstrate a method for obtaining the uplink traffic volume from the CU and predicting the future traffic to switch the optical path and UPF before congestion occurs within the Mobile Backhaul (MBH) delay of 1ms.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 7","pages":"256-259"},"PeriodicalIF":0.3,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10528223","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141583432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Capacity Enhancement Using LEO-QZS MIMO Transmission in Non-Terrestrial Network Systems 在非地面网络系统中利用 LEO-QZS 多输入多输出传输增强容量
IF 0.3
IEICE Communications Express Pub Date : 2024-03-09 DOI: 10.23919/comex.2024XBL0063
Takeshi Shimizu;Eiji Okamoto;Amane Miura;Hiroyuki Tsuji
{"title":"Capacity Enhancement Using LEO-QZS MIMO Transmission in Non-Terrestrial Network Systems","authors":"Takeshi Shimizu;Eiji Okamoto;Amane Miura;Hiroyuki Tsuji","doi":"10.23919/comex.2024XBL0063","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0063","url":null,"abstract":"In recent years, the demand for satellite communication has increased, and the realization of a higher capacity has become a challenge. However, the service area of each low-Earth orbital satellite changes constantly, requiring many satellites for continuous communication, which increases space debris and the risk of collision accidents. This paper proposes a multiple-input multiple-output transmission system using low-Earth orbit and quasi-zenith satellites that can expand the channel capacity while reducing the number of required satellites. Numerical simulations demonstrate a 50% increase in throughput or a quarter reduction in the number of satellites required to achieve the same performance.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 7","pages":"260-263"},"PeriodicalIF":0.3,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10528236","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141583434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ISAR Imaging for Drone Detection Based on Backprojection Algorithm Using Millimeter-Wave Fast Chirp Modulation MIMO Radar 利用毫米波快速啁啾调制多输入多输出雷达，基于反投影算法的无人机探测 ISAR 成像技术
IF 0.3
IEICE Communications Express Pub Date : 2024-03-09 DOI: 10.23919/comex.2024XBL0054
Kenshi Ogawa;Dovchin Tsagaanbayar;Ryohei Nakamura
{"title":"ISAR Imaging for Drone Detection Based on Backprojection Algorithm Using Millimeter-Wave Fast Chirp Modulation MIMO Radar","authors":"Kenshi Ogawa;Dovchin Tsagaanbayar;Ryohei Nakamura","doi":"10.23919/comex.2024XBL0054","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0054","url":null,"abstract":"In this paper, we propose an inverse synthetic aperture radar (ISAR) imaging method using a millimeter wave (mmW) fast chirp modulation (FCM) multi-input and multi-output (MIMO) radar for drone detection. To obtain high-resolution ISAR images, the backprojection algorithm is adopted for the ISAR processing. This algorithm is suitable for ISAR imaging of a moving drone with an irregular motion. The measurement experiments were conducted using flying drones (DJI Phantom 3, DJI Mavic Pro and DJI Mavic Mini) in indoor situations to examine the effectiveness of our proposal. The measurement results demonstrated that the proposed method could generate the high-resolution ISAR images enough to recognize the approximate size and shape of each drone.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 7","pages":"276-279"},"PeriodicalIF":0.3,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10528227","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141583477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Preliminary Study on the Impact of User's Sociality on Content Caching of ICN 用户社交性对 ICN 内容缓存影响的初步研究
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2024XBL0013
Kodai Honda;Ryo Nakamura;Noriaki Kamiyama
{"title":"A Preliminary Study on the Impact of User's Sociality on Content Caching of ICN","authors":"Kodai Honda;Ryo Nakamura;Noriaki Kamiyama","doi":"10.23919/comex.2024XBL0013","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0013","url":null,"abstract":"In this letter, we consider socially-aware ICN (Information-Centric Networking) and empirically reveal the impact of user's sociality, which is corresponding to human factors on social media, on the content caching of ICN. To this end, among user's sociality, we focus on the information propagation behavior and the community structure, and describe a sociality-aware ICN model incorporating these two sociality. Also, we investigate the impact of these two sociality on the performance of ICN. Our key finding is, for instance, that the effectiveness of cache is significantly affected by the community structure rather than the information propagation behavior.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"142-145"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Index-Modulated FSCM Systems with Low Complexity Algorithm and Enhanced Data Rate 具有低复杂度算法和更高数据速率的指数调制 FSCM 系统
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2024XBL0011
Li Li;Zujun Liu;Yurong Guo
{"title":"An Index-Modulated FSCM Systems with Low Complexity Algorithm and Enhanced Data Rate","authors":"Li Li;Zujun Liu;Yurong Guo","doi":"10.23919/comex.2024XBL0011","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0011","url":null,"abstract":"Frequency-Shift Chirp Modulation (FSCM) also known as LoRa modulation, enables long-distance transmission with low power consumption for Internet of Things (IOT), but has a limited transmission rate. Frequency-shift chirp spread spectrum system with index modulation (FSCSS_IM) introduces index modulation to improve the transmission rate of FSCM at the cost of high demodulation complexity. This letter propose an improved FSCSS_IM scheme to further improve the transmission rate of FSCM by adding indexes with equal values to the codebook. And then we design a low complexity demodulation algorithm which employs index matching to replace the index search matching algorithm in FSCSS_IM. Finally, we derive the approximate BER expression of the proposed scheme. The analysis and simulation results show that the transmission rate of the proposed scheme is up to 91.7% higher than that of the FSCM and 8.3% higher than that of the existing FSCSS_IM scheme, and the demodulation algorithm has the almost the same computational complexity as the FSCM and much lower than that of FSCSS_IM.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"138-141"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Delay Analysis of UAV Networks with Hybrid Wireless and Power Line Communication 混合无线和电力线通信无人机网络的延迟分析
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0169
Liangbin Zhu;Qinghai Yang;Shuman Ding
{"title":"Delay Analysis of UAV Networks with Hybrid Wireless and Power Line Communication","authors":"Liangbin Zhu;Qinghai Yang;Shuman Ding","doi":"10.23919/comex.2023XBL0169","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0169","url":null,"abstract":"The unmanned aerial vehicle (UAV) network has been widely studied for for various metrics, e.g., flexible and reliable. Among these metrics, delay is a major performance metric for UAV network. This paper models a UAV network with hybrid wirless and power line communication (PLC) where data is first relayed through a wireless channel and then transmitted through a PLC system. We analysis the delay performance of the hybrid network via SNC approach. Numerical results shows how various parameters affect the delay performance under the service capability derived.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"110-113"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient Distribution of CRL with Grouping Method in V2X Communication 在 V2X 通信中使用分组方法高效分发 CRL
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2024XBL0006
Sasuke Nishikawa;Kenya Sato
{"title":"Efficient Distribution of CRL with Grouping Method in V2X Communication","authors":"Sasuke Nishikawa;Kenya Sato","doi":"10.23919/comex.2024XBL0006","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0006","url":null,"abstract":"In the realm of V2X (Vehicle to Everything) communication research, privacy is upheld through the use of pseudonym technology. However, employing pseudonyms necessitates the distribution of Certificate Revocation Lists (CRLs), posing challenges as the CRL size grows with the increase in invalidated pseudonyms, congesting communication bandwidth. To address this, our proposed method distributes CRLs exclusively to a lead vehicle, tasked with validating pseudonyms for nearby vehicles. Simulation results demonstrate the efficacy of our approach, reducing communication traffic and maintaining delays below 100ms. The proposed technique effectively mitigates the challenges associated with pseudonym-based CRL distribution in V2X communication.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"134-137"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Knife-Edge Diffraction Model for Vehicle Shadowing Estimation in Site- and Scenario-Specific Wireless Channel Emulator 用于特定地点和场景无线信道模拟器中车辆阴影估计的刀刃衍射模型
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0177
Siraphop Saisa-Ard;Nopphon Keerativoranan;Jun-Ichi Takada
{"title":"Knife-Edge Diffraction Model for Vehicle Shadowing Estimation in Site- and Scenario-Specific Wireless Channel Emulator","authors":"Siraphop Saisa-Ard;Nopphon Keerativoranan;Jun-Ichi Takada","doi":"10.23919/comex.2023XBL0177","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0177","url":null,"abstract":"In developing a site- and scenario-specific wireless channel emulator, a computationally efficient shadowing model for vehicles is essential for dynamic emulation with constrained computational resources. In this work, a single-dominant-ray knife-edge diffraction model is proposed to approximate the overall shadowing gain from a cuboid-shaped vehicle by a single diffraction ray. The proposed model is validated with full-wave simulations at 760 MHz. The efficacy of the model is demonstrated through a comparison of the coefficient of determination with that obtained from full-wave simulations and the 3GPP rectangular screen model.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"97-100"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel Micro-Burst Detection Method in Access/Edge Networks Using Periodic IoT Messages 使用周期性物联网信息的新型接入/边缘网络微脉冲检测方法
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0174
Keita Nishimoto;Kota Asaka;Tatsuya Shimada;Tomoaki Yoshida
{"title":"Novel Micro-Burst Detection Method in Access/Edge Networks Using Periodic IoT Messages","authors":"Keita Nishimoto;Kota Asaka;Tatsuya Shimada;Tomoaki Yoshida","doi":"10.23919/comex.2023XBL0174","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0174","url":null,"abstract":"Real-time access edge computing demands access networks to connect a lot of IoT devices to edge servers with ultra-low latency. A lot of connected devices will cause the data bursts and sudden increase of delay (i.e. micro-burst) in the upstream queues in gateways. This study proposes a novel method for detecting such bursts to ensure low-latency communication. The proposed method leverages the periodic messaging behavior of certain IoT devices. It detects bursts based on the variation in the arrival times of messages transmitted from already deployed multiple IoT devices. This approach enables monitoring of delays and detecting bursts without the need for additional probes or modifications to gateways. The study validates the detection accuracy and feasibility through numerical analysis and simulations.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"101-105"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Game Theory Approach for Autonomous Mobility-Assisted Piggyback Network with mm-Wave Links 毫米波链路自主移动辅助捎带网络的博弈论方法
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0180
Daisuke Yamamoto;So Hasegawa;Yozo Shoji;Mikio Hasegawa
{"title":"Game Theory Approach for Autonomous Mobility-Assisted Piggyback Network with mm-Wave Links","authors":"Daisuke Yamamoto;So Hasegawa;Yozo Shoji;Mikio Hasegawa","doi":"10.23919/comex.2023XBL0180","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0180","url":null,"abstract":"A Piggyback network, which is a store-carry-forward network organized by working mobilities of delivery trucks and serving robots, realizes a large-scale data distribution platform. However, when the working mobilities participate in the Piggyback network, the data carrying and forwarding tasks influence their original tasks, resulting in additional transfer costs necessitating appropriate data transfer management. This study proposes a data-transfer management scheme in the Piggyback network. We have developed an algorithm based on the Stackelberg game to balance the end-to-end throughput and the cost required by working mobilities for each data delivery, and we have formulated a rule for the users to select the best mobility based on the balanced throughput and costs. The simulation results show that the proposed method maximizes the utility and achieves a high average throughput of the entire network.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"118-121"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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