基于MEC和NEF的5G游戏加速系统研究

伴随着移动互联网的发展,原有的4G网络已经无法满足需要,5G应时而生。5G提出了eMBB、mMTC和uRLLC三大场景,并引入了移动边缘计算(MEC),将计算能力向贴近用户侧迁移。本文通过对5G核心网中网络开放功能(NEF)和MEC架构的分析,提出了应用NEF和MEC组合,为游戏用户提供高可靠和低时延的网络服务。通过在MEC部署游戏加速平台,监测和分析用户使用情况,并将分析结果通过NEF反馈到5G网络,通知网络为用户建立高优先级的连接,达到为用户使用游戏业务加速的目的,提升用户使用体验。     

边缘计算中的网络建设需求分析

文章系统介绍了移动边缘计算关键技术,详细分析了MEC网络平台架构及功能,对于典型与应用场景中的数据分流业务进行了论述和介绍。在5G网络应用中,MEC技术通过为移动网边缘,无线接入网提供IT服务,同时提供强大的云计算能力,满足了本地化业务、近距离部署的功能要求,极大地提高了用户体验。     

5G边缘计算节点部署方法研究

随着5G商用的到来,基于5G三大应用场景的业务需求,现有核心网集中式部署不能满足新的需求,网络随业务流向边缘迁移是产业发展趋势。移动边缘计算靠近用户侧部署,能提供更短时延和保护隐私等功能。本文通过分析移动边缘计算面向的重点行业和重点领域等业务发展需求,协同构建客户的业务、无线和局房资源视图,匹配出移动边缘计算部署机房位置及资源储备。     

面向5G业务的边缘云网络组网方案探讨

伴随着5G技术的快速发展,5G将激发物联网、边缘计算、人工智能等领域产生大量应用场景落地,边缘计算成为业界关注的热点。边缘云网络是承载边缘计算、各类核心网虚拟化网元以及各类第三方应用程序(APP)的基础设施层,其建设是5G业务顺利开展的基础。文章分析5G业务需求,提出边缘云网络需要具有高安全性、低时延以及低成本的特征。详细介绍了边缘云网络建设主要采用的两种方案,即传统组网方案和SDN组网方案。探讨不同规模的边缘云网络所采用的组网建设方案,满足5G业务稳定承载和多样化的需求。     

5G边缘计算视讯体验增强解决方案

5G大带宽、低时延的特性正在促进高清视频业务的发展,快速高清视频分发、360°全景、AR/VR/全息视频等多种形式的视频应用极大地丰富了视频应用场景。这些视频业务,如高清视频、网购、直播、虚拟与增强现实等均需要更高的带宽、更低的网络时延为用户提供更好的视讯体验。通过深入分析5G网络中视讯资源下沉到网络边缘所需要解决的应用场景和技术需求,重点给出了5G边缘计算视讯体验增强解决方案,包括边缘侧视讯体验增强实现方式及优化手段,以供5G行业垂直应用规划与部署时参考。     

电力5G混合组网的安全风险分析

5G通信技术为电力物联网提供了有力支持,同时也在电力行业应用过程中引入了新的安全挑战。基于电力5G业务的需求,首先,提出了5种5G组网部署建设方案,并对其安全性与成本进行对比分析;其次,提出了5G与电力通信网混合组网架构,对5G网络切片架构按业务场景重新切分;最后,从终端接入、边缘计算、网络通道以及核心网4个部分,对5G技术引入的安全风险进行具体分析。     

5G网络驱动力及关键技术探讨

5G技术已成为各行业关注焦点,文章对5G网络驱动力、应用场景及能力指标进行了总结调研,并对5G网络发展的新型空口技术、网络切片功能、移动边缘计算等关键技术进行了分析。     

面向多业务场景的端到端网络切片安全部署算法

5G移动通信中,网络切片(NS)的引入成功解决了不同业务场景的网络资源分配不均问题.针对传统算法无法满足5G网络的多业务场景切片安全部署问题,该文提出一种针对于多业务场景的端到端网络切片安全需求(NSR)部署算法.首先,针对切片部署过程中节点的安全性进行了定义;其次,根据节点的安全性进行排序和映射,在此基础上,以最小化...     

5G赋能新型业务创新研究

当前,5G网络正在从基础网络建设转到赋能千行百业阶段,各行各业都在挖掘5G的应用潜力.文章以云游戏为例,首先介绍云游戏发展态势,接着分析云游戏业务对网络的挑战,以及5G、边缘计算等新兴技术对云游戏业务的关键赋能作用,并根据用户体验速率、流量密度、时延、能效和连接数等不同场景的关键指标,提出服务策略和技术方案.     

5G 2C超高清互动场景全面挖掘5G用户价值

丰富的超高清视频业务场景与5G结合,将能够大幅提升体育赛事、综艺节目和大型活动等在线直播的用户体验,培养用户在5G 2C场景下的业务使用习惯,促使其客观感知到5G网络能力的优势和价值。根据运营商业务发展目标规划,2020年年底国内5G用户数预计将发展到两亿,中国也将快速成为全球用户规模最大的5G市场。运营商如果延续4G时代以提供更高性价比流量套餐为主的模式,将很可能会陷入既难以为用户呈现5G的独特价值,又不易凸显运营商自身服务优势的困局。     

基于计算、存储、传送资源融合化的新型网络虚拟化架构

5G与边缘计算等应用场景的兴起,使得计算、存储等基础IT资源离散部署与多级部署成为一大发展趋势,如何结合网络基础设施为用户提供更为便捷的、定制化的专属服务,提高整体资源利用率,成为网络技术发展的新方向。重点分析了网络虚拟化的特征与发展、资源发展与融合趋势以及新兴业务对资源供给新需求等,提出了一种基于多维资源融合化的网络虚拟化架构,即通过在网络虚拟化架构中引入资源发现与资源交易过程,将多方、异构的资源有机整合成统一资源平面,在此基础上根据用户需求进行资源切割与虚拟化,以适应新兴业务对资源需求快速灵活的特点,并能够有效提高资源利用效率,降低运营成本。由于资源联合优化涉及多个领域的研究,网络虚拟化架构将随着业务需求与商业模式的发展而不断完善,以期为未来业务发挥重要作用。     

Physical and logical validation of a network based on all-opticalpacket switching systems

The large growth of telecommunication traffic demand generated by multiple new applications and expected to last at least for the next decade will force telecom operators to consider offering more flexible transport services. All-optical packet switching is a powerful technique to provide this flexibility and to support in a cost-efficient way a wide range of bandwidth consuming applications. After a very brief introduction about the packet-switched network architecture studied in the framework of the ACTS KEOPS project, we describe the structure of the packet-switching node we have defined. We then move into physical and logical analysis of the network including more than 40 network sections based on 160 Gb/s throughput optical packet switching nodes could operate error free. In addition, logical simulations have proved that such networks could provide a quality of service (packet loss rate and packet transfer delay per node) compatible with a large variety of service classes. Both results validate the feasibility of the network concept and pace the way toward a flexible network based on all-optical switching techniques     

基于在线拍卖的网络切片资源分配算法

为满足未来移动通信网络中多样化的业务需求,为用户提供定制化服务的同时提升网络经济效益,该文提出一种基于在线拍卖的网络切片资源分配算法。根据业务类型将用户的服务请求转化为相应投标信息,以最大化拍卖参与者的社会福利为目标,将切片资源分配问题建模为基于多业务的在线赢家确定问题。结合资源分配与价格更新策略,实现基于在线拍卖的资源优化配置。仿真结果表明,该算法能够在满足用户业务需求的同时,提升网络经济效益。     

探究网络切片业务性能保障

针对网络切片的业务性能要求,从5G子切片技术和核心网切片业务性能保障两方面进行研究,认为通过接入网、传输网和核心网的子切片的隔离技术,特别是核心网的逻辑隔离和物理隔离技术能够确保切片独立的网络资源;通过核心网的业务连续性模式和流量分流模式的选取可以保障网络切片需要的性能。     

区块链在轨道交通边缘计算网络中的应用

多接入边缘计算（multi-access edge computing,MEC）能为城市轨道交通中的计算密集型业务和时延敏感型业务提供高质量的服务能力,然而轨道交通边缘计算网络中的大量边缘设施暴露在开放式环境中,其隐私保护和传输安全面临着很大的挑战。区块链（blockchain）具有分布式账本、共识机制、智能合约、去中心化应用等功能特性,因此,区块链技术可以为分布式轨道交通边缘计算网络构建系统性的安全防护机制,从而保障网络安全和数据安全,实现高质量的城市轨道交通服务。首先,介绍了区块链的基本概念;其次,设计了轨道交通边缘计算网络架构,提出了融合区块链的轨道交通边缘计算网络安全防护机制和应用实例;最后,对该安全防护机制面临的问题和挑战进行了分析和展望。     

Introducing Mobile Edge Computing Capabilities through Distributed 5G Cloud Enabled Small Cells

Current trends in broadband mobile networks are addressed towards the placement of different capabilities at the edge of the mobile network in a centralised way. On one hand, the split of the eNB between baseband processing units and remote radio headers makes it possible to process some of the protocols in centralised premises, likely with virtualised resources. On the other hand, mobile edge computing makes use of processing and storage capabilities close to the air interface in order to deploy optimised services with minimum delay. The confluence of both trends is a hot topic in the definition of future 5G networks. The full centralisation of both technologies in cloud data centres imposes stringent requirements to the fronthaul connections in terms of throughput and latency. Therefore, all those cells with limited network access would not be able to offer these types of services. This paper proposes a solution for these cases, based on the placement of processing and storage capabilities close to the remote units, which is especially well suited for the deployment of clusters of small cells. The proposed cloud-enabled small cells include a highly efficient microserver with a limited set of virtualised resources offered to the cluster of small cells. As a result, a light data centre is created and commonly used for deploying centralised eNB and mobile edge computing functionalities. The paper covers the proposed architecture, with special focus on the integration of both aspects, and possible scenarios of application.     

Advanced cellular Internet service (ACIS)

The public's desire for mobile communications and computing, as evidenced by the popularity of cellular phones and laptop computers combined with the explosive demand for Internet access suggest a very promising future for wireless data services. The key to realizing this potential is the development and deployment of high-performance radio systems. In this article we describe a basic service concept, advanced cellular Internet service (ACIS), and the technologies for achieving reliable high-speed transmission to wide-area mobile and portable cellular subscribers with very high spectrum efficiency. Such a wireless service, optimized to meet the needs of a client-server model for information retrieval and Web browsing, and combined with evolutionary enhancements in second-generation technologies, can provide an attractive option for third-generation systems. The radio link design combines OFDM with transmit and receive antenna diversity and Reed-Solomon coding to overcome the link budget and dispersive fading limitations of the cellular mobile radio environment. For access, a dynamic packet assignment algorithm is proposed which combines rapid interference measurements, priority ordering, and a staggered frame assignment schedule to provide spectrum efficiencies of two-to-four times existing approaches     

Proposal of Asynchronous Time Division Multiple Access Radio Highway Using Chirp Multiplexing Transform

Asynchronous TDMA bus-link systems using chirp multiplexing transform(CMT) are proposed for radio highway networks to provide the flexibleconstruction of fiber-optic radio access networks and thepossibility of the universal use of these networks among future diverseradio services. The CMT equipped at the radio base station performs twofunctions. One is the conversion of FDM multiple radio services intosignals with a TDMA format and the other is the time compression ofthe generated signal in order to allow asynchronous access. As aresult, the proposed systems can realize the unified transmission ofmultiple radio services and the switching of them in the optical stage(photonic routing) in the networks according to the type of radioservice. The realization of such photonic routing of the radio servicewould greatly benefit the goal of a seamless and universalnetwork available to different types of radio service. Therelationship between the pulse-loss probability performance and thecall-blocking probability performance is theoretically analyzed. Theeffect on the performance of traffic partiality in the coveredarea and the way the performance can be improved are theoreticallyinvestigated. Finally, one of the ways to determine the network sizecovered by a bus link and the number of connected radio base stationsis introduced.     

面向智能化切片的服务化等级保障技术增强和研究

网络切片是5G垂直行业应用的重要使能技术,可以为不同应用场景提供差异化服务,切片服务等级保障使得运营商能够准确感知和评估各类业务的服务质量,以便进行服务质量的保障,然而,在切片的应用中,由于缺乏关于业务体验的实时监控,使运营商无法有效评估各类业务的服务质量。为了让运营商可以有效地评估各类业务的服务质量,首先利用网络数据分析功能分析得到切片中某个业务的用户体验,然后借助人工智能技术,基于业务体验数据建立业务模型,评估整个切片在运行态的切片SLA,从而更新切片的资源配置和调度,实现SLA的增强。