无线供能移动边缘网络中计算时延最小化资源分配方法研究

针对无线供能移动边缘计算(MEC)网络,该文将计算时延定义为数据卸载与计算所消耗的时间,并提出一种节点计算时延之和最小化的多维资源分配方法。首先,在节点能量因果约束下,通过联合优化专用能量站工作时长、任务分割系数、节点计算频率和发射功率来建立一个计算时延之和最小化的多维资源分配问题。由于存在优化变量耦合与max-max函数,所建问题非凸且无法采用凸优化工具获取最优解。为此,通过引入一系列松弛变量和辅助变量来进行优化问题简化以及优化变量解耦,并在此基础上,通过深入分析简化问题的结构特性,提出一种基于二分法的迭代算法来求解原问题的最优解。最后,计算机仿真验证了所提迭代算法的正确性以及所提资源分配方法在计算时延方面的优越性。     

一种面向云服务提供商的资源分配机制

针对用户、服务提供商(SP)和基础设施提供商三者之间的市场行为所带来的收益问题,该文面向服务提供商提出了一种两阶段多虚拟机资源分配机制。首先,建立能力规划模型并引入粒子群算法,决策出服务提供商收益最大化的资源购买方案。然后,提出一种优化用户满意度的服务提供策略,优化了服务提供商的长期收益。最后仿真实验结果表明,该方法有效提高了服务提供商的收益,并取得了较好的用户满意度。     

Rate Adaptation Schemes for Different Service Requirements in the Code Division Multiple Access Environment

1IntroductionCodeDivisionMultiplg,.Access(CDMA)isamultipleaccesstechniquebasedonspreadspectrum.Actually,thisisa"secondmodulationtechnique."Inthedirectsequencespreadspectrum,theservicedatastreamisproceededbyaconventionalstandarddigitalmodulation,suchasBinaryPhaseShiftkeying(BPSK),andthenaspreadingsignalisappliedforthesecondtimemodulationoftheservicestream.ThepurposeofspreadspectrumistotransformasignalwithbandwidthB.B.intoanoise-likesignalofmuchlargerbandwidthB..Typically,thepowerofradia…     

GlitchLess: Dynamic Power Minimization in FPGAs Through Edge Alignment and Glitch Filtering

This paper describes GlitchLess, a circuit-level technique for reducing power in field-programmable gate arrays (FPGAs) by eliminating unnecessary logic transitions called glitches. This is done by adding programmable delay elements to the logic blocks of the FPGA. After routing a circuit and performing static timing analysis, these delay elements are programmed to align the arrival times of the inputs of each lookup table (LUT), thereby preventing new glitches from being generated. Moreover, the delay elements also behave as filters that eliminate other glitches generated by upstream logic or off-chip circuitry. On average, the proposed implementation eliminates 87% of the glitching, which reduces overall FPGA power by 17%. The added circuitry increases the overall FPGA area by 6% and critical-path delay by less than 1%. Furthermore, since it is applied after routing, the proposed technique requires little or no modifications to the routing architecture or computer-aided design (CAD) flow.      

工作流技术在“电信业务市场综合管理信息系统”中的应用

提出应用工作流技术解决许可审批流程电子化过程中所面临的流程、申请材料、人员分工等方面的复杂多变的问题,并结合实际工作进行了工作流系统的模型分析,展示了工作流技术在实际系统中的应用结果。     

Deep Reinforcement Learning-Based Task Offloading and Service Migrating Policies in Service Caching-Assisted Mobile Edge Computing

Emerging mobile edge computing(MEC)is considered a feasible solution for offloading the computation-intensive request tasks generated from mobile wireless equipment(MWE) with limited computational resources and energy. Due to the homogeneity of request tasks from one MWE during a longterm time period, it is vital to predeploy the particular service cachings required by the request tasks at the MEC server. In this paper, we model a service caching-assisted MEC framework that takes into account th...     

智能网业务生成环境中的业务编辑及业务装配技术

本文首先介绍智能网的概念和智能网业务生成环境的原理，然后描述了智能网ＣＩＮ０１系统中业务生成环境的基本结构及关键部分：业务逻辑编辑器及业务装配器的实现，最后介绍了ＣＩＮ０１中实现业务生成环境的软件环境与方法。     

基于网格的科学计算的公平服务方法研究

在科学与工程计算领域，各种科学计算库及其工具软件扮演着十分重要的角色。在科学计算网格中．通过引入软件代理可以更好地利用这些计算库和工具软件库。本文通过对网络化科学计算工具NetSolve的分析．通过引入服务队列、访问率、时差和连续性等因子，改进了其中的用户访问策略和资源调度方法，使其具有资源访问的公正性和负载均衡性。     

基于策略的下一代网络业务管理环境

对下一代网络的业务管理环境构建方法问题进行了研究.下一代网络的业务管理环境应保证业务的服务质量,能适应多业务的环境并提供方便的多业务管理功能.提出基于策略的业务管理模型,将策略执行点、管理功能执行点和管理功能程序三者分离,在此基础上设计并实现了一个适用于多业务环境的、具有QoS保证的、扩展性强的基于策略的业务管理环境（PB-SME）.PBSME较好地满足了下一代网络对业务管理环境的要求.     

TD-MRBT系统中的业务逻辑执行环境

SLEE（Service Logic Execution Environment）是业务逻辑的执行环境,能够满足下一代网络对新业务的极大需求。本文首先介绍了SLEE的总体结构,然后重点阐述了SLEE的两个主要组成部分：支撑容器和业务容器的体系结构以及功能特点。最后介绍了SLEE在TD-MRBT（TD-Multimedia Ring Back Tone）系统中的应用。     

Modeling Service Activation in a Multimedia Environment

The emergence of multimedia applications requires appropriate management and control activities to be provided and organized in an integrated framework. This article presents an architectural approach to the modeling of service activation processing in a multimedia environment.     

Time-Cost Efficient Scheduling Algorithms for Executing Workflow in Infrastructure as a Service Clouds

Cloud Computing enables delivery of IT resources over the Internet and follows the pay-as-you-go billing model. The cloud infrastructures can be used as an appropriate environment for executing of workflow applications. To execute workflow applications in this environment, it is necessary to develop the workflow scheduling algorithms that consider different QoS parameters such as execution time and cost. Therefore, in this paper we focus on two criteria: total completion time (makespan) and execution cost of workflow, and propose two heuristic algorithms: MTDC (Minimum Time and Decreased Cost) which aims to create a schedule that minimizes the makespan and decreases execution cost, and CTDC (Constrained Time and Decreased Cost) which is based on the first algorithm (MTDC) and aims to create a schedule that decreases the execution cost while satisfying the deadline constraint of the workflow application. The proposed algorithms are evaluated by a simulation process using WorkflowSim. To evaluate the proposed algorithms, the results of MTDC are compared with the results of HEFT (Heterogeneous Earliest Finish Time), and the results of CTDC are compared with the results of heuristic based algorithms [such as IC-PCP (IaaS Cloud Partial Critical Paths), IC-PCPD2 (Deadline Distribution) and BDHEFT (Budget and Deadline HEFT)] and meta-heuristic based algorithms [such as PSO (Particle Swarm Optimization) and CGA2 (Coevolutionary Genetic Algorithm with Adaptive penalty function)]. The results show that the proposed algorithms perform better than the mentioned algorithms in most cases.     

多粒度多业务环境下的传送平面

文章从多粒度多业务环境对智能光网传送平面的要求出发,分析了光电光结构和全光结构的传送平面的实现技术,提出了一种适合WDM网络的传送平面结构。     

多域服务环境下的分布式故障诊断算法

多域服务环境下,域间故障传播导致的跨域症状会对故障诊断算法性能造成影响。该文提出了多域服务环境下的分布式依赖模型,在该模型基础上提出分布式故障诊断算法,并从减小通信开销、更准确的症状引发评估函数和虚假症状概率3个方面对算法进行了改进。仿真结果显示,该文算法可以有效诊断多域环境下的服务故障。     

IN中业务创建环境的设计与实现

文章介绍了ＩＮ中业务创建环境的思想、概念及相关标准，重点论述了业务创建环境的具体设计与实现。     

嵌入式环境下Web Service技术的实现

为了解决嵌入式系统与其他异构系统之间互联和集成的难题,提出了Web Service技术在低端嵌入式设备上的实现方法。以ARM Cortex-M3微处理器为核心,基于小型实时操作系统和嵌入式TCP/IP协议栈,详细阐述了Web Service的实现过程,包括HTTP接收,XML与SOAP协议的解析,以及同具体服务实现的绑定,并针对嵌入式环境下资源受限的特点,给出了相应的优化方法。使用专用测试软件进行的压力测试表明,该实现运行稳定,具有良好的可行性。     

云计算环境下的情景感知服务模式

This paper discussed the differences of context-aware service between the cloud computing environment and the traditional service system. Given the above differences, the paper subsequently analyzed the changes of context-aware service during preparation, organization and delivery, as well as the resulting changes in service acceptance of consumers. Because of these changes, the context-aware service modes in the cloud computing environment change are intelligent, immersive, highly interactive, and real-time. According to active and responded service, and authorization and non-authorized service, the paper drew a case diagram of context-aware service in Unified Modeling Language (UML) and established four categories of context-aware service modes.     

下一代网络中业务执行环境框架系统的设计

随着网络的不断融合，网络能力开放和业务引入的安全性问题亟待解决。通过分析下一代网络开放式的编程接口——Parlay API的特点及其功能，提出了一种安全、高效的基于Parlay框架接口的应用侧框架系统结构，对其系统结构及关键模块进行了详细介绍。     

移动边缘计算中服务功能链的自适应优化部署策略

为解决移动边缘计算中面向用户的服务功能链（Service Function Chain,SFC）部署成本开销过大、时延过长问题,提出了针对SFC的支出成本与时延联合自适应优化的部署策略。首先,在虚拟网络功能（Virtualized Network Function,VNF）节点选取阶段,考虑路径损耗这一无线信道衰落问题,根据有线用户与无线用户的位置情况,选择当前最佳节点以降低SFC的响应时延。其次,在服务节点配置阶段,根据用户请求处理的数据内容的新鲜度记录,自适应动态增加和删减相应的缓存,利用资源感知算法在保证数据传递可靠性的同时,减少服务节点的配置个数,降低配置开销。最后,在SFC部署阶段,利用基于KSP（K-shortest Paths）的功耗感知算法确定最佳节点映射排序与通信链路,在减少通信链路重映射的同时还能保证部署的SFC的低成本与低时延。实验仿真结果表明,相比于已有方案,该方法能够有效降低部署成本与时延,并能对不同用户的SFC部署做到自适应优化,提高了SFC的部署成功率。