IEICE Transactions on Communications最新文献_第2页

NOMA-Based Highly-Efficient Low-Latency HARQ with Inter-Base Station Cooperation for URLLC 基于noma的URLLC基站间高效低延迟HARQ

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023ebt0005

Ryota Kobayashi, Takanori Hara, Y. Yuda, K. Higuchi

{"title":"NOMA-Based Highly-Efficient Low-Latency HARQ with Inter-Base Station Cooperation for URLLC","authors":"Ryota Kobayashi, Takanori Hara, Y. Yuda, K. Higuchi","doi":"10.1587/transcom.2023ebt0005","DOIUrl":"https://doi.org/10.1587/transcom.2023ebt0005","url":null,"abstract":"SUMMARY This paper extends our previously reported non-orthogonal multiple access (NOMA)-based highly-efficient and low-latency hybrid automatic repeat request (HARQ) method for ultra-reliable low latency communications (URLLC) to the case with inter-base station cooperation. In the proposed method, delay-sensitive URLLC packets are preferentially multiplexed with best-effort enhanced mobile broadband (eMBB) packets in the same channel using superposition coding to reduce the transmission latency of the URLLC packet while alleviating the throughput loss in eMBB. Although data transmission to the URLLC terminal is conducted by multiple base stations based on inter-base station cooperation, the proposed method allocates radio resources to URLLC terminals which include scheduling (bandwidth allocation) and power allocation at each base station independently to achieve the short transmission latency required for URLLC. To avoid excessive radio resource assignment to URLLC terminals due to independent resource assignment at each base station, which may result in throughput degradation in eMBB terminals, we employ an adaptive path-loss-dependent weighting approach in the scheduling-metric calculation. This achieves appropriate radio resource assignment to URLLC terminals while reducing the packet error rate (PER) and transmission delay time thanks to the inter-base station cooperation. We show that the proposed method significantly improves the overall performance of the system that provides simultaneous eMBB and URLLC services.","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67305071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smart Radio Environments with Intelligent Reflecting Surfaces for 6G Sub-Terahertz-Band Communications 6G次太赫兹波段通信的智能反射面智能无线电环境

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022fgi0002

Y. Ogawa, Shuto Tadokoro, Satoshi Suyama, M. Iwabuchi, T. Nishimura, Takanori Sato, J. Hagiwara, T. Ohgane

{"title":"Smart Radio Environments with Intelligent Reflecting Surfaces for 6G Sub-Terahertz-Band Communications","authors":"Y. Ogawa, Shuto Tadokoro, Satoshi Suyama, M. Iwabuchi, T. Nishimura, Takanori Sato, J. Hagiwara, T. Ohgane","doi":"10.1587/transcom.2022fgi0002","DOIUrl":"https://doi.org/10.1587/transcom.2022fgi0002","url":null,"abstract":"SUMMARY Technology for sixth-generation (6G) mobile communication system is now being widely studied. A sub-Terahertz band is expected to play a great role in 6G to enable extremely high data-rate transmission. This paper has two goals. (1) Introduction of 6G concept and propagation characteristics of sub-Terahertz-band radio waves. (2) Performance evaluation of intelligent reﬂecting surfaces (IRSs) based on beamforming in a sub-Terahertz band for smart radio environments (SREs). We brieﬂy review research on SREs with reconﬁgurable intelligent surfaces (RISs), and describe requirements and key features of 6G with a sub-Terahertz band. After that, we explain propagation characteristics of sub-Terahertz band radio waves. Important feature is that the number of multipath components is small in a sub-Terahertz band in indoor oﬃce environments. This leads to an IRS control method based on beamforming because the number of radio waves out of the optimum beam is very small and power that is not used for transmission from the IRS to user equipment (UE) is little in the environments. We use beams generated by a Butler matrix or a DFT matrix. In simulations, we compare the received power at a UE with that of the upper bound value. Simulation results show that the proposed method reveals good performance in the sense that the received power is not so lower than the upper bound value.","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67303984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Decoupling Method for Four Closely Spaced Planar Inverted-F Antennas Using Parasitic Elements and Bridge Lines 基于寄生单元和桥接线的四间距平面倒f天线解耦方法

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3190

Quang Quan Phung, T. Nguyen, N. Michishita, Hiroshi Sato, Y. Koyanagi, H. Morishita

引用次数: 0

GNSS Spoofing Detection using Multiple Sensing Devices and LSTM Networks 基于多传感设备和LSTM网络的GNSS欺骗检测

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023cep0008

Xin Qi, Toshio Sato, Zheng Wen, Yutaka Katsuyama, Kazuhiko Tamesue, Takuro Sato

引用次数: 0

Numerical Derivation of Design Guidelines for Tightness and Shaking Amplitude of Vibrating Intrinsic Reverberation Chamber by Method of Moment 用矩量法数值推导振动本征混响室的密封性和振幅设计准则

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023ebp3002

Makoto Hara, Jianqing Wang, F. Leferink

引用次数: 0

Experimental Evaluation of 920 MHz Band Air-to-Ground Radio Wave Propagation in Mountainous Areas 山区920mhz频段空对地无线电波传播实验评估

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023ebp3007

Tekkan Okuda, Hiraku Okada, C. B. Naila, M. Katayama

引用次数: 0

A Network Design Scheme in Delay Sensitive Monitoring Services 一种时延敏感监控业务网络设计方案

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023ebp3010

Akio Kawabata, Takuya Tojo, Bijoy Chand Chatterjee, E. Oki

{"title":"A Network Design Scheme in Delay Sensitive Monitoring Services","authors":"Akio Kawabata, Takuya Tojo, Bijoy Chand Chatterjee, E. Oki","doi":"10.1587/transcom.2023ebp3010","DOIUrl":"https://doi.org/10.1587/transcom.2023ebp3010","url":null,"abstract":"SUMMARY Mission-criticalmonitoringservices, suchasﬁndingcrim-inals with a monitoring camera, require rapid detection of newly updated data, where suppressing delay is desirable. Taking this direction, this paper proposes a network design scheme to minimize this delay for monitoring services that consist of Internet-of-Things (IoT) devices located at terminal endpoints (TEs), databases (DB), and applications (APLs). The proposed scheme determines the allocation of DB and APLs and the selection of the server to which TE belongs. DB and APL are allocated on an optimal server from multiple servers in the network. We formulate the proposed network design scheme as an integer linear programming problem. The delay reduction eﬀect of the proposed scheme is evaluated under two network topologies and a monitoring camera system network. In the two network topologies, the delays of the proposed scheme are 78 and 80 percent, compared to that of the conventional scheme. In the monitoring camera system network, the delay of the proposed scheme is 77 percent compared to that of the conventional scheme. These results indicate that the proposed scheme reduces the delay compared to the conventional scheme where APLs are located near TEs. The computation time of the proposed scheme is acceptable for the design phase before the service is launched. The proposed scheme can contribute to a network design that detects newly added objects quickly in the monitoring services.","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-segment Verification FrFT Frame Synchronization Detection in Underwater Acoustic Communications 水声通信中的多段验证FrFT帧同步检测

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023ebp3048

Guojin Liao, Yongpeng Zuo, Qiao Liao, Xiaofeng Tian

引用次数: 0

Robustness of intensity-modulation/direct-detection secret key distribution against spontaneous Raman scattering in wavelength-multiplexed systems with existing optical transmission signals 波长复用系统中强度调制/直接检测密钥分配对自发拉曼散射的鲁棒性

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023ebp3068

Kyo Inoue, Daichi Terazawa

引用次数: 0

Non-Orthogonal Multiple Access Based on Orthogonal Space-Time Block Codes for Mobile Communications 基于正交空时分组码的移动通信非正交多址

IF 0.7 4区计算机科学

IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3166

Yuyuan Chang, K. Fukawa

引用次数: 0