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Coordination of networking and computing: toward new information infrastructure and new services mode

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Frontiers of Information Technology & Electronic Engineering 2024年第5期25卷 629-632页

作者： Xiaoyun wang Tao SUN Yong CUI Rajkumar BUYYA Deke GUO Qun HUANG Hassnaa MOUSTAFA Chen TIAN shangguang wang China Mobile Communications Corporation Beijing 100032China China Mobile Research Institute Beijing 100053China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China CLOUDS Lab School of Computing and Information SystemsUniversity of MelbourneMelbourneVIC 3010Australia National Key Laboratory of Information Systems Engineering National University of Defense TechnologyChangsha 410073China School of Computer Science Peking UniversityBeijing 100871China Intel Corporation Santa ClaraCA 95054USA State Key Laboratory for Novel Sofiware Technology Nanjing UniversityNanjing 210023China State Key Laboratory of Networking and Switching Technology Bejing University of Posts and TelecommunicationsBeijing 100876China

Computing,serving as the cornerstone of information processing,plays a pivotal role in the digital service ***"network"and"computing,"responsible for information transmission and processing respectively,traditionally belong to different stakeholders and have evolved ***,the recent trend toward the coordination and integration of computing and networks has garnered significant attention from both industry and *** such as"computility network"and"computing force network"have emerged,and the International Telecommunication Union-Telecommunication Standardization(ITU-T)has initiated efforts to develop standards for the coordination of networking and computing(CNC),focusing on the architecture and framework.

关键词： computing services network

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边缘辅助实时应用中信息年龄感知的任务调度

通信学报 2024年第6期45卷 144-159页

作者：王红艳孙其博马骁周傲王尚广北京邮电大学网络与交换技术国家重点实验室北京100876

针对无线设备资源受限导致状态提取滞后难以满足实时应用对信息新鲜度需求的问题,考虑到边缘节点处理容量的有限性,提出了一种联合考虑信息新鲜度与调度实时性的调度方法。该方法首先利用队列的系统时间和信息年龄分别刻画任务在计算之... 详细信息

针对无线设备资源受限导致状态提取滞后难以满足实时应用对信息新鲜度需求的问题,考虑到边缘节点处理容量的有限性,提出了一种联合考虑信息新鲜度与调度实时性的调度方法。该方法首先利用队列的系统时间和信息年龄分别刻画任务在计算之前的时延和计算之后的信息新鲜度,同时给每个卸载任务合理的截止期限,来保证任务进入计算过程之前的有效性。然后,采用最小处理速率约束方法对任务调度过程中的处理速率进行约束,保证任务调度的实时性。最后,基于Lyapunov优化技术实现优化长期任务调度决策的目的。仿真结果表明,所提方法在调度实时性和系统信息新鲜度方面均具有较好的性能。

关键词：边缘计算信息年龄任务调度截止期限 Lyapunov优化

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星载6G核心网架构与网元功能设计及验证

电信科学 2024年第9期40卷 28-43页

作者：王尚广王超马骁邢若粼周傲北京邮电大学深圳研究院广东深圳518063 北京邮电大学网络与交换技术全国重点实验室北京100876

为全面提升卫星的在轨服务能力,将6G核心网与卫星融合。针对6G核心网在低轨卫星部署的迫切需求,设计星载6G核心网体系架构,包括分布式架构、离线自治、网元智能化等功能。对星载6G核心网主要网元进行了优化设计,包括接入与移动性管理、... 详细信息

为全面提升卫星的在轨服务能力,将6G核心网与卫星融合。针对6G核心网在低轨卫星部署的迫切需求,设计星载6G核心网体系架构,包括分布式架构、离线自治、网元智能化等功能。对星载6G核心网主要网元进行了优化设计,包括接入与移动性管理、会话管理、分布式服务注册与发现等。通过在轨部署和仿真试验,验证了所提星载6G核心网体系架构的有效性。仿真结果表明,集中式星载5G核心网网元之间的平均通信时延为109.3 ms,而分布式星载6G核心网的平均通信时延为60.3 ms,相较而言降低了44.8%;此外,5G集中式服务注册和服务发现的平均时延分别为40.53 ms和40.04 ms,而6G分布式服务注册和服务发现的平均时延分别为35.18 ms和34.91 ms,分别降低13.2%和12.8%。

关键词：低轨卫星星载6G核心网分布式架构离线自治

CSMA/CN+: Improving the Performance of Collision Notification for Wireless LANs

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China Communications 2017年第7期14卷 34-43页

作者： Qinglin Zhao Fangxin Xu shangguang wang The Faculty of Information Technology Macao University of Science and Technology State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

In CSMA/CN, whenever inferring that a receiving frame gets corrupted, the receiver sends back its signature as a collision notification(CN) to the sender. Upon detecting an arrival of the CN, the sender will abort the ongoing transmission immediately. However, in low signal-to-interference-plus-noise ratio(SINR), the false alarm of the CN occurs frequently, which might force a sender not to transmit any frame at all. To overcome this drawback, this paper proposes CSMA/CN+ to enhance the performance of CSMA/CN. In CSMA/CN+, we introduce an additional signature. The receiver, adapting to channel conditions and self-signal suppression capability, prudently determines whether to send back zero, one, or two signatures to the sender. In this way, we can reduce or exclude false alarms and therefore improve the system performance. In this paper, we first present the design of CSMA/CN+. We then apply the design in a wireless LAN, and theoretically analyze the detection performance of the notification and the system throughput. Extensive simulations verify that CSMA/CN+ can remarkably improve the system throughput of CSMA/CN and our analysis is very accurate.

关键词： PHY/MAC CSMA/CN collision detection correlation

An Early Stage Detecting Method against SYN Flooding Attacks

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China Communications 2009年第4期6卷 108-115页

作者： Sun Qibo wang shangguang Yan Danfeng Yang Fangchun State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

Existing detection methods against SYN flooding attacks are effective only at the later stages when attacking signatures are *** this paper an early stage detecting method(ESDM) is *** ESDM is a simple but effective method to detect SYN flooding attacks at the early *** the ESDM the SYN traffic is forecasted by autoregressive integrated moving average model, and non-parametric cumulative sum algorithm is used to find the SYN flooding attacks according to the forecasted ***-driven simulations show that ESDM is accurate and efficient to detect the SYN flooding attacks.

关键词： denial-of-service attacks autoregressive integrated moving average model non-parametric cumulative sum algorithm

Edgence: A Blockchain-Enabled Edge-Computing Platform for Intelligent IoT-Based dApps

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China Communications 2020年第4期17卷 78-87页

作者： Jinliang Xu shangguang wang Ao Zhou Fangchun Yang State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China

Nowadays scalable Io T management is a bottleneck of Io T development due to the geographically dispersed distribution, fragmented ownerships, and ever-growing population of Io T devices. To intelligently manage massive decentralized applications(d Apps) in Io T usecases, Edgence(EDGe + intellig ENCE) is proposed to use edge clouds to access Io T devices and users, and then use its in-built blockchain to realize self-governing and self-supervision of the edge clouds. Edgence proposes to use masternode technology to introduce Io T devices and users into a closed blockchain system, which can extend the range of blockchain to Io T-based d Apps. Further, masternodes do good to scalability by raising the TPS(transactions per second) of the blockchain network. To support various d Apps, a three-tier validation is proposed, namely script validation, smartcontract validation, and masternode validation. To avoid energy consumption resulted by blockchain consensus, Edgence proposes a random but verifiable way to elect a masternode to generate each new block. The potential of the tailored Edgence is shown by examples of decentralized crowdsourcing and AI training.

关键词： mobile edge computing IoT crowd-intelligence blockchain dApp

SLA-driven container consolidation with usage prediction for green cloud computing

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Frontiers of Computer Science 2020年第1期14卷 42-52页

作者： Jialei LIU shangguang wang Ao ZHOU Jinliang XU Fangchun YANG State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100029China School of Computer and Communication Engineering Zhengzhou University of Light IndustryZhengzhou 450002China

Since service level agreement(SLA)is essentially used to maintain reliable quality of service between cloud providers and clients in cloud environment,there has been a growing effort in reducing power consumption while complying with the SLA by maximizing physical machine(PM)-level utilization and load balancing techniques in infrastructure as a ***,with the recent introduction of container as a service by cloud providers,containers are increasingly popular and will become the major deployment model in the cloud environment and specifically in platform as a ***,reducing power consumption while complying with the SLA at virtual machine(VM)-level becomes *** this context,we exploit a container consolidation scheme with usage prediction to achieve the above *** obtain a reliable characterization of overutilized and underutilized PMs,our scheme jointly exploits the current and predicted CPU utilization based on local history of the considered PMs in the process of the container *** demonstrate our solution through simulations on real *** experimental results show that the container consolidation scheme with usage prediction reduces the power consumption,number of container migrations,and average number of active VMs while complying with the SLA.

关键词： container consolidation service level agreement power consumption usage prediction

From Earth to Space:A First Deployment of 5G Core Network on Satellite

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China Communications 2023年第4期20卷 315-325页

作者： Ruolin Xing Xiao Ma Ao Zhou Schahram Dustdar shangguang wang State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China Distributed Systems Group TU Wien1040 ViennaAustria

Recent developments in the aerospace industry have led to a dramatic reduction in the manufacturing and launch costs of low Earth orbit *** new trend enables the paradigm shift of satelliteterrestrial integrated networks with global *** particular,the integration of 5G communication systems and satellites has the potential to restructure nextgeneration mobile *** leveraging the network function virtualization and network slicing,the satellite 5G core networks will facilitate the coordination and management of network functions in satellite-terrestrial integrated *** are the first to deploy a 5G core network on a real-world satellite to investigate its *** conducted experiments to validate the satellite 5G core network *** validated procedures include registration and session setup *** results show that the satellite 5G core network can function normally and generate correct signaling.

关键词： 5G core network satellite communications satellite Internet

BLOCKCHAIN FOR INTERNET OF THINGS

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China Communications 2020年第9期17卷 6-7页

作者： shangguang wang Hong-Ning Dai Wuhui Chen the State Key Laboratory of Networking and Switching Technology (BUPT) Macau University of Science and Technology Sun Yat-sen University

Internet of Things(IoT) is reshaping various sectors, such as manufacturing, logistics, transportation, healthcare, energy and utilities. IoT essentially consists of various smart objects distributed throughout the wh...

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