Mobile Edge Server Deployment towards Task Offloading in Mobile Edge Computing: A Clustering Approach

Mobile Networks and Applications - Recent years have witnessed the effect of Mobile Edge Computing (MEC) during resource-intensive and time-critical applications toward various mobile devices....     

一种面向移动边缘计算的多用户细粒度任务卸载调度方法

在移动边缘计算中(Mobile Edge Computing,MEC),任务卸载可以有效地解决移动设备资源受限的问题,但是将全部任务都卸载到边缘服务器并非最优.本文提出一种面向移动边缘计算的多用户细粒度任务卸载调度新方法,把计算任务看作一个有向无环图(Directed Acyclic Graph,DAG),对节点的执行位置和调度顺序进行了优化决策.考虑系统的延迟把计算卸载看作一个约束多目标优化问题(Constrained Multi-object Optimization Problem,CMOP),提出了一个改进的NSGA-Ⅱ算法来解决CMOP.所提出的算法能够实现本地和边缘的并行处理从而减少延迟.实验结果表明,算法能够在实际应用程序中做出最优决策.     

Contract-theoretic Approach for Delay Constrained Offloading in Vehicular Edge Computing Networks

Mobile Networks and Applications - Mobile Edge Computing (MEC) is a promising solution to improve vehicular services through offloading computation to cloud servers in close proximity to mobile...     

软件定义网络在光传送网领域的应用探讨

为研究软件定义网络(SDN)在光传送网领域应用的可行性,首先简要介绍了SDN的概念和背景,分析了SDN技术应用于光传送网络的驱动力,探讨SDN在光传送网络中应用所面对的关键技术问题,最后对SDN在光传送网领域的应用提出若干建议.     

车载边缘计算卸载技术研究综述

通过将移动边缘计算技术应用在车联网,车载边缘计算技术可为车载用户提供低时延、高带宽、高可靠性的应用服务.首先详细介绍了车载边缘计算卸载技术的背景、意义以及本文的贡献.其次,分别概述了车载边缘计算卸载技术的网络架构、主要挑战以及应用场景.然后,从移动分析、卸载模式、资源协作和管理等多个维度全面综述了车载边缘计算卸载技术的...     

Encrypted Network Traffic Classification and Resource Allocation with Deep Learning in Software Defined Network

Wireless Personal Communications - The climate has changed absolutely in every area in just a few years as digitized, making high-speed internet service a significant need in the future. Future...     

基于非对称信道状态信息的协作通信：一种契约理论建模方法

In relay-assisted cooperative com-munication, relay nodes help forwarding the information of a source node in case of link failure between the source and a destination. Although user cooperation improves the over-all efficiency of the network, it requires incen-tive to stimulate potential relay nodes to assist the source by forwarding its data to the desti-nation. Moreover, the potential relays are bet-ter informed than the source about their chan-nel conditions to destination, which results in asymmetric information between the source and the relays. In this paper, we study the problem of lack of forwarding incentive in cooperative communication when channel state information of relays is private infor-mation and not known by the source. To tackle this problem, we apply the principle of contract theory to a cooperative wireless system. Source first designs incentive compatible and individually rational contract, consisting of a set of power-credit pairs. Then it broadcasts contract items to nearby nodes. Once the source node receives reply messages from the volunteer relays, it chooses one or more relays based on its re-quirements and communication starts. Simulation results show how credit assignment works in order to stimulate relays to cooperate and prevents relays from cheating behavior.     

Priority-MECE: A Mobile Edge Cloud Ecosystem Based on Priority Tasks Offloading

Mobile Networks and Applications - With the rapid development of Internet of things, the traditional city model is no longer applicable. Therefore, the emerging concept of smart city meets the...     

软件定义网络中快速和一致的流更新策略

在软件定义网络中,为了实现各种网络性能优化目标,控制面需要频繁的对数据面进行更新.然而,由于数据面的异步性,不合理的更新将严重降低网络性能.针对此问题,该文提出一种快速和一致的流更新策略(FCFU).该策略通过流分段减弱其原有的强依赖关系,使能并行更新,通过分析子流段与多个资源间的依赖关系得到总更新轮数较少的更新安排,最后基于延时队列完成一致性流更新.实验结果表明,与现有的流更新算法相比,该策略能够缩短流更新总时间达20.6％,同时保证了更新期间无拥塞和包乱序等问题的发生.     

A Software Defined Radio Platform with Direct Conversion: SOPRANO

In this paper, a new software defined radio platform with direct conversionisintroduced.The platform is named SOPRANO, which stands for Software Programmableand Hardware Reconfigurable Architecture for Network.Main features of SOPRANO include a high-level design methodologyfor digital circuits, direct conversion based on six-port technology, andnovel digital signal processingalgorithms for multi-band and multi-mode operation.The first prototype of the SOPRANO platform has been built and was ableto receive M-ary PSK (Phase Shift Keying)and QAM (Quadrature Amplitude Modulation) signals,with two different carrier frequencies at 2.45 GHz and 5.25 GHz,by changing signal-processing software.     

A Dominance of the Channel Capacity in Load Balancing of Software Defined Network

Wireless Personal Communications - Software defined networks concept is used to transfer the responsibility of route management from forwarding devices to a centralized control application which is...     

Correction to: Priority-MECE: A Mobile Edge Cloud Ecosystem Based on Priority Tasks Offloading

Mobile Networks and Applications -     

Performance Analysis of Software Defined Network Concepts in Networked Embedded Systems

Mobile Networks and Applications - Software-Defined Networking (SDN) has been largely used in wired networks to separate the control plane and the data plane and enable users to programmatically...     

Adaptive Task Offloading in Vehicular Edge Computing Networks: a Reinforcement Learning Based Scheme

Mobile Networks and Applications - In recent years, with the rapid development of Internet of Things (IoTs) and artificial intelligence, vehicular networks have transformed from simple interactive...     

Accurate Cluster Head Selection Technique for Software Defined Network in 5G VANET

Wireless Personal Communications - The vehicular Ad Hoc Network is a very dynamic network with uncertain presence of vehicles on the road and data transmission between vehicles and road-side units....     

Protection of Medical Information Systems Against Cyber Attacks: A Graph Theoretical Approach

Wireless Personal Communications - Securing electronic health records of patients is the paramount concern in medical information systems which faces unique set of challenges. Safeguarding a health...     

Real-Time Edge Follow: A Real-Time Path Search Approach

Real-time path search is the problem of searching a path from a starting point to a goal point in real-time. In dynamic and partially observable environments, agents need to observe the environment to track changes, explore to learn unknowns, and search suitable routes to reach the goal rapidly. These tasks frequently require real-time search. In this paper, we address the problem of real-time path search for grid-type environments; we propose an effective heuristic method, namely a real-time edge follow alternative reduction method (RTEF-ARM), which makes use of perceptual information in a real-time search. We developed several heuristics powered by the proposed method. Finally, we generated various grids (random-, maze-, and U-type), and compared our proposal with real-time A*, and its extended version real-time A* with n-look-ahead depth; we obtained very significant improvements in the solution quality.     

5G空口统一框架初探空口统一框架初探:软件定义空口

提出了软件定义空口(SDAI)的设计理念和框架,认为通过SDAI可以对多个无线空口功能模块进行灵活编程配置,有效地满足不同场景需求,是未来5G空口设计的基本理念。基于SDAI统一框架,帧结构、新波形、新型多址、调制编码、双工模式和多天线技术等可以自适应配置,使得无线信号对业务场景"量体裁衣"。另外,基本功能模块的可编程性、可配置性和可共享性,都可有效地提升空口实现效率。     

一种新的基于信息测度和神经网络的边缘检测方法

本文构造了不同的信息测度来定量描述阶跃边缘的三个本质特征,并给出由相应的三个分量组成的特征向量.用人工得到的样本对一BP神经网络进行训练,将训练后的神经网络直接用于图像的边缘检测.本文方法无需定阈值;在特征的选取上充分考虑了边缘和噪声的本质区别,具有优异的抗噪性能.实验证明本文方法具有令人满意的效果.