检索结果-内蒙古大学图书馆

9th International Conference on Cloud Computing and Big Data Analytics, ICCCBDA 2024

作者： Qin, Yuqin Liu, Jiali Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing China

ISBN: (纸本)9798350373554

With the rapid increase of data, the scale of cloud is gradually expanding, forming a wide-area cloud platform consisting of multiple data centers distributed across different locations. For industry professionals, maintaining the normal operation of such a large platform relies on reasonable system architecture and operational methods. This article provides an in-depth analysis of the operational requirements for wide-area cloud platforms, investigates relevant anomaly detection methods, and proposes suitable anomaly detection methods for high-frequency local operational status data in data center operations systems and global operational status data in central operations systems respectively. In addition, based on edge-cloud architecture, an operational framework tailored to wide-area cloud platforms is proposed to provide reference means for improving the efficiency of operations personnel. The feasibility of the framework has been verified through actual project testing. © 2024 IEEE.

关键词： Cloud computing architecture

来源：评论

学校读者我要写书评

暂无评论

Multi-Task Semantic Communication for Image Transmission over MIMO Channel 16

Multi-Task Semantic Communication for Image Transmission ove...

引用

16th International Conference on Wireless Communications and Signal Processing, WCSP 2024

作者： Peng, keyi Meng, Yue Wu, Di Zhang, Zhi Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing China

ISBN: (纸本)9798350390643

Semantic communication has emerged as a promising paradigm through the transmission of semantic features to improve spectrum efficiency. This paper proposes an end-to-end semantic communication system for multi-task image transmission based on multi-input multi-output (MIMO) channel, which benefits from space multiplexing and higher channel capacity. First, we design a deep joint source-channel coding (DeepJSCC) scheme, which introduces an image cluster method at the transmitter based on the common semantic information among multiple images. Furthermore, to achieve semantic transmission of different clusters in the MIMO channel, a precoding scheme based on transformer is proposed, guaranteeing the receiver can correctly recover the semantic features. Finally, numerical results demonstrate that our proposed framework significantly outperforms other frameworks in terms of improving transmission efficiency. © 2024 IEEE.

关键词： Channel coding

来源：评论

学校读者我要写书评

暂无评论

Routing Strategy in LEO Satellite Networks: A Multi-Agent Reinforcement Learning Approach 16

Routing Strategy in LEO Satellite Networks: A Multi-Agent Re...

引用

16th International Conference on Wireless Communications and Signal Processing, WCSP 2024

作者： Lian, Xinru Zhang, Qiuyang Wang, Ying Guo, Ce Chen, Xi Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing China

ISBN: (纸本)9798350390643

Low earth orbit (LEO) satellite network is promising to meet the low latency, extensive coverage, and flexible networking requirements for future 6G communications. To realize efficient data transmission in dynamic LEO satellite network, an appropriate routing strategy is essential. In this paper, we investigate a multi-task LEO satellite network. Specifically, the routing strategies for all tasks are designed to maximize the quality of service (QoS) for data transmission. Since the formulated problem is a mixed-integer nonlinear programming problem, a multi-agent reinforcement learning-based routing algorithm (MARL-RA) is proposed to address this problem. Simulation results demonstrate that the proposed algorithm significantly improves the QoS of data transmission and reduces the end-to-end (E2E) delay by 50%, 33% and 16.7% compared to other benchmark schemes, respectively. © 2024 IEEE.

关键词： Satellite communication systems

来源：评论

学校读者我要写书评

暂无评论

Self-Healing in Knowledge-Driven Autonomous Networks: Context, Challenges, and Future Directions

引用

IEEE NETWORK 2024年第6期38卷 425-432页

作者： Fang, Honglin Yu, Peng Tan, Can Zhang, Junye Lin, Dahua Zhang, Liyan Zhang, Yong Li, Wenjing Meng, Luoming Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing Peoples R China Huawei Technol Co Ltd Shenzhen 518129 Peoples R China

With the advancement of communication and computer technology, network architectures have become increasingly complex, accompanied by the continual emergence of novel services. This increase in sophistication surpasses the abilities of manual maintenance and traditional network management solutions, thereby elevating the potential risk of network failures. This article provides a comprehensive review of significant network incidents that have occurred over the past decade and outlines the evolution of network self-healing. Building on these findings, we propose an effective knowledge-driven self-healing pattern (KSHP) suitable for a broad spectrum of network failure scenarios, designed to alleviate the challenges of automation and scalability in autonomous networks. In our case study, we implemented a self-healing agent following the KSHP schema to mitigate network service failures caused by link congestion. The experimental results validate the efficacy and practicality of KSHP in network fault scenarios. Furthermore, future directions are discussed and analyzed in detail. The insights presented in this article provide a basic pattern for the knowledge-driven self-healing framework, facilitating the achievement of Level 5 autonomous networks.

关键词： Artificial intelligence Software Knowledge engineering Human factors Autonomous networks Fault tolerant systems Scalability Failure analysis Autonomous networks Self-healing materials

来源：评论

学校读者我要写书评

暂无评论

INT-LLPP: Lightweight in-band network-wide telemetry with low-latency and low-overhead path planning

引用

COMPUTER COMMUNICATIONS 2025年 236卷

作者： Zhang, Penghui Zhang, Hua Dai, Yuqi Zeng, Cheng Wang, Jingyu Liao, Jianxin Southeast Univ Natl Mobile Commun Res Lab Nanjing 211111 Peoples R China Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China

With the increasing complexity of networks, network telemetry becomes a critical part of network management. However, existing network telemetry systems still suffer from excessive control overhead, forwarding overhead, and latency. In this paper, we propose INT-LLPP, a novel in-band network-wide telemetry system with low-latency and low-overhead path planning. The network telemetry architecture of INT-LLPP is unique in that it only requires a set of probes to collect telemetry items for multiple service flows. Moreover, the proposed Probe Path Generation (PPG) algorithm optimizes the probe paths to reduce the forwarding overhead and achieve full network coverage. To balance the telemetry latency and control overhead, we propose an efficient algorithm called the Simulated Annealing Maximum Latency Setting (SAMLS) algorithm, which controls the length of the probe paths. Simulation results show that INT-LLPP can reduce network telemetry control overhead by over 50% and reduce forwarding overhead by 5% to 10%. Moreover, INT-LLPP can lower telemetry latency by 30% to 40%.

关键词： Network telemetry Network measurement Control overhead Telemetry latency Forwarding overhead

来源：评论

学校读者我要写书评

暂无评论

Efficient 2-Segment Routing Based on Local Search With Failure Recovery 22

Efficient 2-Segment Routing Based on Local Search With Failu...

引用

22nd IEEE International Symposium on Parallel and Distributed Processing with Applications, ISPA 2024

作者： Chen, Jingjing Ling, Xueyun Wang, Ying Qiu, Xuesong Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing China

ISBN: (纸本)9798331509712

Segment Routing (SR) is a flexible and efficient source-routing technology. It can forward traffic along arbitrary paths in the network and has good scalability without the maintenance of routing information at intermediate nodes. These advantages make SR widely used in data centers, WANs, MANs, and other networks, particularly in the context of parallel and distributed processing. However, current SR traffic engineering has some shortcomings in terms of network load balancing, failure resiliency, and complete use of SR characteristics, which prevents better optimization of comprehensive network performance. In this paper, we propose a heuristic traffic engineering algorithm (2-SRLS) based on a two-segment routing model (2-SR), which incorporates a traffic-splitting strategy, adjacency segments and failure resiliency. The algorithm supports the technical characteristic of adjacency segments in SR with a flexible source node traffic splitting strategy and can efficiently recover from single-link failures. Experimental results show that our algorithm is close to the theoretical optimum in terms of the performance of reducing the maximum link utilization and has a 10%-16% improvement in active link coverage compared to existing algorithms. The running time is reduced by 70% compared to existing heuristics. In addition, the proposed algorithm can effectively recover from single-link failures on the basis of guaranteed the stability of the maximum link utilization (MLU). © 2024 IEEE.

关键词： Local search (optimization)

来源：评论

学校读者我要写书评

暂无评论

Empirical Analysis of Clutter Loss in an Urban Macrocellular Scenario in the Frequency Range of 3.3 to 7.5 GHz 11

Empirical Analysis of Clutter Loss in an Urban Macrocellular...

引用

11th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2023 - Proceedings

作者： Liu, Peijie Tang, Pan Tian, Lei Zhao, Xinyu Zhang, Jianhua Beijing University of Posts and Telecommunications State Key Lab of Networking and Switching Technology Beijing China

ISBN: (纸本)9798350326277

Air-space-ground integrated network (ASGIN) is considered as one of the candidate technologies for the sixth generation (6G) mobile communication due to its ubiquitous connectivity and wide coverage. And accurate clutter loss modeling is essential for designing and evaluating satellite/aerial communication systems. This paper presents clutter loss measurements in an urban macrocellular (UMa) scenario in the frequency range of 3.3 to 7.5 GHz. Based on the measured data, we analyze the clutter loss and compare it to the standard model. This work contributes to the investigation and modeling of clutter loss in air-to-ground or space-to-ground channels. © 2023 IEEE.

关键词： 6G ASGIN Channel measurement clutter loss

来源：评论

学校读者我要写书评

暂无评论

An optimization method for accelerating TCP convergence in metaverse scenarios 10

An optimization method for accelerating TCP convergence in m...

引用

10th IEEE Smart World Congress, SWC 2024

作者： Zhao, Qing Wang, Mu Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing China

ISBN: (纸本)9798331520861

In recent years, the rapid development of virtual reality (VR) technology has brought the concept of the metaverse from science fiction to reality. VR devices have made significant progress in the consumer market, with new hardware and technologies constantly emerging. However, the initialization time for VR application software is quite long, severely impacting user experience. We closely examined the Transmission Control Protocol (TCP) connection behavior during software startup and found that current congestion control algorithms take a long time to converge to the maximum available bandwidth in highbandwidth networks after the slow start phase. This is because the internal parameters of widely used congestion control algorithms, including CUBIC, are fixed within the kernel, leading to prolonged convergence times in high-bandwidth environments. In this paper, we propose FWMB, a dynamic parameter adjustment method based on CUBIC that optimizes parameter settings using the current network's maximum available bandwidth. We implemented this algorithm in a Linux environment, and comprehensive experiments show that compared to the default CUBIC algorithm, FWMB reduces the convergence time to maximum bandwidth by 11.2 % to 19.7 %. © 2024 IEEE.

关键词： Application programs

来源：评论

学校读者我要写书评

暂无评论

Following in the Footsteps: Predicting Human Trajectories Using Motion Pattern Memory 6

Following in the Footsteps: Predicting Human Trajectories Us...

引用

6th ACM International Conference on Multimedia in Asia, MMAsia 2024

作者： Yang, Yuxin Zhu, Pengfei Qi, Mengshi Ma, Huadong State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9798400712739

Human trajectory forecasting is a crucial challenge in the social security and autonomous driving due to the inherent uncertainty in human actions and intentions. To leverage the potential motion patterns of human behavior, we propose a novel approach that integrates a Motion Pattern Memory with Transformer diffusion for trajectory prediction. Our method constructs a memory bank from clustered motion patterns observed in the training set trajectories. We introduce an addressing mechanism to retrieve relevant patterns and potential target distributions from the memory bank, generating target memory tokens for each prediction. We then use these tokens to guide the diffusion model as an additional condition for generating trajectories. Extensive experiments demonstrate that our approach achieves state-of-the-art accuracy in trajectory prediction. The code is available on https://***/aurora-xin/MPM. © 2024 Copyright held by the owner/author(s). Publication rights licensed to ACM.

关键词： Clustering Diffusion Model Memory Network Trajectory Prediction

来源：评论

学校读者我要写书评

暂无评论

Quantum discriminative canonical correlation analysis

引用

QUANTUM INFORMATION PROCESSING 2023年第4期22卷 1-21页

作者： Li, Yong-Mei Liu, Hai-Ling Pan, Shi-Jie Qin, Su-Juan Gao, Fei Wen, Qiao-Yan Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China State Key Lab Cryptol POB 5159 Beijing 100878 Peoples R China

Discriminative canonical correlation analysis (DCCA) is a powerful supervised feature extraction technique for two sets of multivariate data, which has wide applications in pattern recognition. DCCA consists of two parts: (i) mean-centering that subtracts the sample mean from the sample and (ii) solving the generalized eigenvalue problem. The cost of DCCA is expensive when dealing with a large number of high-dimensional samples. To solve this problem, here we propose a quantum DCCA algorithm. Specifically, we devise an efficient method to compute the mean of all samples and then use block-Hamiltonian simulation and quantum phase estimation to solve the generalized eigenvalue problem. Our algorithm achieves a polynomial speedup in the dimension of samples under certain conditions over its classical counterpart.

关键词： Quantum computing Quantum algorithm Discriminative canonical correlation analysis Feature extraction

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：