检索结果-内蒙古大学图书馆

HybridDep: An elastic hybrid resources allocation strategy for I/O-intensive applications

IET COMMUNICATIONS 2025年第1期19卷

作者： Li, Pengmiao Zhang, Yuchao Yun, Shaoxuan Yu, Fucai Wu, Aizhi Beijing Acad Safety Sci & Technol Urban Operat Safety Res Ctr Beijing Peoples R China Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing Peoples R China

Along with the rapid development of B5G/6G, the number of applications grows rapidly and the data amount explodes exponentially, putting a massive burden on the resource-limited edge servers. To fully utilize the limited resources, virtualization technology is introduced to provide elastic deployment for applications in edge servers. But for I/O-intensive applications, allocating elastic resources is not as easy as for compute-intensive ones, because the amount of required I/O resources is unknown due to the request uncertainty. Many existing researches try to solve this multi-application deployment problem by peaks clipping and valleys filling, to resource utilization. However, in fact, the times of peaks and valleys of most hybrid deployed applications are similar to each other, which invalidates those traditional solutions. To address this challenge, the actual data is analysed and complementary peak and valley periods in time and space dimensions are found. Based on this finding, an elastic hybrid deployment strategy HybridDep is proposed, for multiple I/O-intensive applications. Validated by simulation experiments using real datasets and traces, this algorithm can reduce about 3.2% deployment cost than the compared algorithm.

关键词： bandwidth allocation resource allocation

来源：评论

学校读者我要写书评

暂无评论

NeRFCom: Feature Transform Coding Meets Neural Radiance Field for Free-View 3D Scene Semantic Transmission

引用

IEEE Communications Letters 2025年第5期29卷 898-902页

作者： Yue, Weijie Si, Zhongwei Wu, Bolin Wang, Sixian Qin, Xiaoqi Niu, Kai Dai, Jincheng Zhang, Ping Beijing University of Posts and Telecommunications Key Laboratory of Universal Wireless Communications Ministry of Education Beijing100876 China Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing100876 China

We introduce NeRFCom, a novel communication system designed for end-to-end 3D scene transmission. Compared to traditional systems relying on handcrafted NeRF semantic feature decomposition for compression and well-adaptive channel coding for transmission error correction, our NeRFCom employs a nonlinear transform and learned probabilistic models, enabling flexible variable-rate joint source-channel coding and efficient bandwidth allocation aligned with the NeRF semantic feature's different contribution to the 3D scene synthesis fidelity. Experimental results demonstrate that NeRFCom achieves free-view 3D scene efficient transmission while maintaining robustness under adverse channel conditions. © 1997-2012 IEEE.

关键词： Channel coding

来源：评论

学校读者我要写书评

暂无评论

Scheduling of Digital Twin Synchronization in Industrial Internet of Things: A Hybrid Inverse Reinforcement Learning Approach

引用

IEEE INTERNET OF THINGS JOURNAL 2025年第5期12卷 5137-5147页

作者： Zhang, Qiuyang Wang, Ying Li, Zhendong Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Xi An Jiao Tong Univ Sch Informat & Commun Engn Xian 710049 Peoples R China

The digital transformation of industrial systems has been significantly influenced by the emergence of the Industrial Internet of Things. Digital twin (DT) technology plays a pivotal role in the transformation, serving as a bridge between the physical and digital realms. To support the efficient application of DT technology, the synchronization between physical entities (PEs) and DT models (DTMs) can not be ignored. Given the open nature of wireless channels, the diversity in synchronization mechanisms arising from the functional variations among PEs inevitably deteriorates the design of synchronization strategies. Moreover, a metric is required to gauge the synchronization between PEs and DTMs. In this article, a reinforcement learning (RL)-based online scheduling scheme is proposed to achieve efficient synchronization between DTMs and PEs with different mechanisms. Specifically, the Age of Information (AoI) is introduced as a metric to evaluate synchronization strategies. In addition, PEs are classified and share spectrum resources according to synchronous mechanisms, improving resource utilization efficiency. To ensure real-time scheduling, we propose a hybrid inverse RL-based scheme to support distributed time slot-level synchronization, reducing the need for manual intervention. Simulation results show that compared with other baseline RL schemes, the proposed scheme can reduce the AoI value more than 20% between the PE and the DTM.

关键词： Synchronization Digital twins Servers Production Wireless communication Internet of Things Optimization Job shop scheduling Industrial Internet of Things Cloud computing Age of Information (AoI) digital twin (DT) inverse reinforcement learning (RL) spectrum sharing

来源：评论

学校读者我要写书评

暂无评论

Environment Reconstruction With Multi-Targets Reflectors-Merged Sensing Method Based on THz Single-Sided Channel Characteristics

引用

IEEE Wireless Communications Letters 2025年第5期14卷 1471-1475页

作者： Chang, Zhaowei Tang, Pan Zhang, Jianhua Jiang, Hao Liu, Guangyi Beijing University of Posts and Telecommunications State Key Lab of Networking and Switching Technology Beijing100876 China Nanjing University of Information Science and Technology School of Artificial Intelligence/School of Future Technology Nanjing210044 China China Mobile Research Institute Beijing100053 China

Terahertz (THz) integrated sensing and communication (ISAC) holds the potential to achieve high data rates and high-resolution sensing. Reconstructing the propagation environment is a vital step for THz ISAC, as it enhances the predictability of the communication channel to reduce communication overhead. In this letter, we propose an environment reconstruction methodology (ERM) merging reflectors of multi-targets based on THz single-sided channel small-scale characteristics. In this method, the inclination and position of tiny reflection faces of one single multi-path (MPC) are initially detected by double-triangle equations based on Snell's law and geometry properties. Then, those reflection faces of multi-target MPCs, which are filtrated as available and one-order reflection MPCs, are globally merged to accurately reconstruct the entire propagation environment. The ERM is capable of operating with only small-scale parameters of receiving MPC. Subsequently, we validate our ERM through two experiments: bi-static ray-tracing simulations in an L-shaped room and channel measurements in an urban macrocellular (UMa) scenario in THz bands. The validation results demonstrate a small deviation of 0.03 m between the sensing outcomes and the predefined reflectors in the ray-tracing simulation and a small sensing root-mean-square error of 1.28 m and 0.45 m in line-of-sight and non-line-of-sight cases respectively based on channel measurements. Overall, this work is valuable for designing THz communication systems and facilitating the application of THz ISAC communication techniques. © 2012 IEEE.

关键词： Channel estimation

来源：评论

学校读者我要写书评

暂无评论

Anti-Main-Lobe Jamming Beamforming With Covariance Matrix Reconstruction for Wireless Communication Systems Under Jamming Attacks

引用

IEEE TRANSACTIONS ON VEHICULAR technology 2025年第4期74卷 6168-6179页

作者： Chen, Siru Qi, Xiaolei Peng, Mugen Yan, Shi Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China North China Elect Power Univ Dept Elect & Commun Engn Hebei Key Lab Power Internet Things Technol Baoding 071003 Peoples R China

This paper investigates an eigenpair substitution-based covariance matrix reconstruction beamforming algorithm to achieve reliable wireless communication under interference attacks. Our objective is to accurately eliminate main and side lobe interferences in the communication scenario without affecting the communication signal. Specifically, we design a precise interference-plus-noise (IPN) covariance matrix based on the received signals. The interference covariance matrix is obtained using the integration method at first, and then the eigenpair substitution is utilized to further eliminate the communication signal components in the interference covariance matrix. After that, diagonal loading is performed on the interference covariance matrix to obtain the IPN covariance matrix for designing the beamforming vector. Additionally, we derive the correlation between eigenvectors and signal steering vectors, thereby validating the rationale for employing eigenpair substitution to eliminate communication signal components from the IPN covariance matrix. Simulation results show that the proposed algorithm is superior to other benchmark algorithms, especially when the signal-to-noise ratio is high or the number of snapshots is small.

关键词： Covariance matrices Interference Array signal processing Vectors Jamming Wireless communication Loading Signal to noise ratio Training data Internet of Things Adaptive beamforming covariance matrix reconstruction diagonal loading eigenpair processing main lobe interference

来源：评论

学校读者我要写书评

暂无评论

Channel Characterization and Comparison in Industrial Scenario from Sub-6 GHz to Visible Light Bands for 6G

引用

PHOTONICS 2025年第3期12卷 257-257页

作者： Yin, Yue Tang, Pan Zhang, Jianhua Hu, Zheng Jiang, Tao Xia, Liang Liu, Guangyi Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China China Mobile Res Inst Beijing 100053 Peoples R China

The industrial scenario is indispensable for ubiquitous 6G coverage, which demands hyper-reliable and low-latency communication for full automation, control, and operation. To meet these demands, it is widely believed that it is necessary to introduce not only the conventional sub-6 GHz bands but also high-frequency technologies, such as millimeter wave (mmWave), terahertz (THz), and visible light bands. In this paper, we conduct a channel characterization and comparison in the industrial scenario from the sub-6 GHz to visible light bands. The channel characteristics, including the path loss (PL), root mean square (RMS) delay spread (DS), and angle spread (AS), were analyzed with respect to the frequency dependence and the distance dependence. On the one hand, the visible light band exhibited significant differences in channel characteristics compared to the electronic wave band. Due to the line-of-sight transmission of VLC, the visible light band had a higher path loss, and the path loss exponent reached 3.84. Due to the Lambertian radiation pattern, which has a wide range of reflection angles, the AS of the visible light band was much larger than that of the electronic wave band, which were 1.73 and 0.80 for the visible light and THz bands, respectively. On the other hand, the blockage effect of the metal instruments in the industrial scenario will greatly affect the channel characteristics. As the transceiver distance grows large, signals from both sides of the receiver will be blocked by metal instruments, resulting in a decreasing trend in the RMS DS for the electronic wave band. Moreover, the statistical characteristics of the channel properties were modeled and compared with the 3GPP TR 38.901 standard. It was found that the height of the receiver caused the difference between the proposed model and the 3GPP model and needs to be taken into account when modeling. Furthermore, we extended the 3GPP model to the THz and VLC bands and provided the statistical par

关键词： channel characteristics comparison industrial scenario VLC mmWave THz sub-6 GHz

来源：评论

学校读者我要写书评

暂无评论

An optimal bound for factoring unbalanced RSA moduli by solving Generalized Implicit Factorization Problem

引用

JOURNAL OF SUPERCOMPUTING 2025年第1期81卷 1-24页

作者： Zhang, Ran Bi, Jingguo Li, Lixiang Peng, Haipeng Beijing Univ Posts & Telecommun Sch Cyberspace Secur Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun Informat Secur Ctr State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China State Key Lab Cryptol POB 5159 Beijing 100878 Peoples R China

The integer factorization problem, concerning the product of two primes N = pq, has been a focal point for researchers since its rise to prominence with the RSA algorithm, a renowned public key scheme. It is well known that the integer factorization problem can be solved by the Number Field Sieve (NFS) algorithm in sub-exponential time, this challenge may also find resolution in polynomial time under certain conditions for the primes. In this paper, we revisit the problem of factoring RSA moduli with the implicit hint, where the implicit hint is the shared bits of primes. As for k RSA moduli, we present a novel implicit factorization approach applicable when the unknown multiples ap of the prime factors p share a certain number of most significant bits (MSBs) or least significant bits (LSBs). By drawing inspiration from addressing the Approximate Common Divisor Problem (ACDP), we transform this problem into solving the small roots of k-1 trivariate polynomials. To compute these small roots, we employ Coppersmith's method to construct a lattice basis for the modular polynomials. We modify the lattice basis by introducing new variables, achieving an optimal bound in the MSB and LSB cases. Our attack breaks the RSA system and improves upon all previous attacks on such variants when the amount of the shared bits is sufficiently large. Concluding our paper, we meticulously validate the theoretical analysis results, with experimental data confirming the full practical feasibility of our attack on such an RSA variant system.

关键词： RSA system Generalized Implicit Factorization Problem Coppersmith's method LLL algorithm

来源：评论

学校读者我要写书评

暂无评论

Sublinear smart semantic search based on knowledge graph over encrypted database

引用

COMPUTERS & SECURITY 2025年 151卷

作者： Li, Jiaxin Peng, Haipeng Li, Lixiang Beijing Univ Posts & Telecommun Informat Secur Ctr State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun Natl Engn Lab Disaster Backup & Recovery Beijing 100876 Peoples R China

In light of the growing significance of data privacy in cloud computing, searchable encryption has emerged as a prominent area of research in recent years. Given that the majority of achievements are only concentrated on keyword-based search, there is a clear need to explore secure semantic extension to enhance the utilization of information. Nevertheless, majority of secure semantic schemes mainly focus on the direct combination of traditional searchable encryption and semantic extension techniques, which results in the high computation and communication overheads for multi-keyword queries. Besides, to enhance the flexibility and extensibility of secure semantic search, some researchers have already proposed encryption methods for structured data. However, the effectiveness and practicality of these methods above are often limited by their rigid structure description and redundant index building. To handle these problems, we present a secure sublinear semantic search scheme based on the knowledge graph, which can achieve sublinear knowledge graph (KG) search and smart sentence queries concurrently. The knowledge graph encryption index is constructed with the same structure as the inverted index, thereby enabling sublinear efficiency. Furthermore, the system also offers functions for both node and edge semantic extension in the knowledge graph. We demonstrate that our proposed scheme is adaptively secure and present a series of experiments to analyze its performance. The experimental results show that our scheme exhibits significant advantages in all computation, communication and expression situations.

关键词： Semantic search Searchable encryption Sublinear Knowledge graph Inverted index

来源：评论

学校读者我要写书评

暂无评论

Distributed and Parallel Blockchain: Towards a Multi-Chain System With Enhanced Security

引用

IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING 2025年第1期22卷 723-739页

作者： Liu, Weikang Cao, Bin Peng, Mugen Li, Bo Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Hong Kong Univ Sci & Technol Dept Comp Sci & Engn Kowloon Hong Kong Peoples R China

Isolatability and scalability are two critical issues faced by blockchain. Blockchain interoperability addresses isolatability between heterogeneous blockchains, while sharding-based blockchain achieves scalability by solving isolatability of homogeneous blockchains running in different shards. To ensure atomicity between different blockchains, they both need to overcome two significant problems: 1) how to handle cross-chain transactions without trusting any third parties;2) how to enhance the resistance to double-spending attacks of participating blockchains. To this end, this work presents a two-tier multi-zone architecture, Distributed and Parallel Blockchain (DP-Chain), where Consensus Zone in tier-1 features blockchain interoperability and sharding-based blockchain by allowing homogeneous or heterogeneous blockchains run in different zones, while Coordination Layer in tier-2 allows them to interoperate as a Direct Acyclic Graph (DAG) without trusting any third parties. Meanwhile, the coordination scheme between the two tiers is designed to resist potential double-spending attacks. Then, stochastic models are used to capture DP-Chain consensus process and analyze the probability of successful double-spending attacks. These analyses can help understand DP-Chain easily and offer theoretical guidelines for further implementations. Finally, based on the proposed architecture, a practical system is realized with C++ and open in Github for testing. Extensive experiments show correctness and effectiveness of this design.

关键词： Blockchains Consensus algorithm Interoperability Security Scalability Resists Resistance Blockchain direct acyclic graph sharding interoperability isolatability scalability

来源：评论

学校读者我要写书评

暂无评论

DPU-Enhanced Network Security Situation Awareness Model for New Power Systems 24

DPU-Enhanced Network Security Situation Awareness Model for ...

引用

3rd International Conference on Algorithms, Data Mining, and Information technology, ADMIT 2024

作者： Hao, Jiakai Li, Yuting Bai, Haoyang Dong, Xu Wang, Han Xiao, Yitao State Grid Beijing Electric Power Company Beijing China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9798400718120

As the development of new power systems progresses, the edge side exhibits emerging challenges such as diversified new network services, rapid extensions of access and local networks, and a dramatic increase in the number of sensing terminals. These conditions pose extremely severe challenges to security protection. Traditional network security situation awareness models are predominantly software-based, neglecting the intensive I/O overhead in big data network environments. Such approaches fail to keep pace with the increasing network traffic in new power systems and do not fully meet the demands for high concurrency and low latency. Additionally, conventional methods lack effective security isolation measures, rendering systems vulnerable to malicious attacks and security breaches, potentially triggering a series of stability issues within the system. In response, this paper proposes an integrated hardware-software co-design architecture for traffic extraction based on Data Processing Unit (DPU). By offloading some regex matching tasks to the hardware, this architecture significantly enhances the system’s overall processing capability and throughput. Furthermore, this study introduces a multi-source fusion-based network security situation awareness model tailored for new power system environments, markedly improving the accurate identification of attack behaviors and providing robust support for network security. © 2024 Copyright held by the owner/author(s).

关键词： HDCP

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：