移动互联网端到端流量管控策略研究

本文通过对无线网络新技术和新架构的分析,针对2G/3G/LTE/WLAN多网络环境下,研究如何对不同的用户类型、业务类型、时间段、累积量进行QoS控制,以提升业务体验和用户满意度。基于PCC承载架构和ANDSF多连接管理机制,通过端到端的流量管控技术提升互联网带宽的使用率。借鉴都江堰水利工程原理,通过实施网络流量控制、均匀网络流量、降低并有效控制流量峰值,提出了移动互联网网络协同的融合策略控制方案,实现了合理配置网络资源、合理有效控制网络投资,为移动互联网业务发展创造条件,为移动互联网时代应对数字洪水做好充分的技术储备。     

CDMA 2000 1xEVDO Rev.A系统的QoS应用

随着数据用户和数据业务的迅猛发展,运营商网络的承载压力不断加大,如何综合考虑网络资源利用最大化和用户间公平性,是目前网络运行商面临的主要问题。文章对QoS概念、QoS模型、3G业务的QoS分类以及CDMA 2000 1xEVDORev.A端到端QoS的体系结构进行了说明,并对EVDORev.A系统中端到端QoS保证的系统实现进行了介绍。文章认为第三代无线通信技术CDMA 2000 1xEVDORev.A能提供端到端的QoS解决方案,它不仅增强了对实时业务的支持,还可以大大提升网络服务性能。     

基于业务特征的TDD-LTE端到端QoS参数研究

针对移动互联网快速发展对无线接入网的高带宽和业务质量需求,首先进行了常用的移动互联网业务研究分析;其次,依据业务特性、3GPP网络协议规范和本地已部署的TDD-LTE网络结构,提出了端到端QoS设置模型;最后,在商用网络上进行QoS 参数部署验证。研究结果表明：在典型高速率业务环境下,TDD-LTE单小区峰值调度用户数增加253.92%;在现网混合业务拥塞环境下,TDD-LTE 单小区峰值调度用户数增加81.80%。研究结果具备良好的行业应用性和推广性。     

5G NSA网络端到端差异化QoS策略研究

通过将不同的业务、用户映射到不同的QCI类型承载,并对不同的QCI类型承载配置不同的QoS参数,可以实现基于业务和用户的网络差异化服务。首先对NSA网络进行整体介绍,明确NSA网络无线承载类型,并逐一介绍相关的QoS参数。之后从业务差异化和用户差异化2个维度,制定相应的QoS策略,同时基于不同的策略,对无线网、传输网和核心网参数进行统一梳理,实现5G NSA网络端到端差异化QoS参数的合理化、标准化。     

UMTS网络的端到端服务质量（QoS）

随着移动通信的不断普及,人们越来越不满足于话音通信和低速率的数据业务,第三代移动通信技术3G的引入,将在不久的将来为我们带来高达2Mbits/s的用户数据速率和前所未有的各种移动多媒体业务。而服务质量(QoS)将是3G能否被广大用户所接受的关键因素之一。北电网络《UMTS网络的端到端服务质量(QoS)》一文介绍了UMTS对QoS的定义和要求,以及北电网络QoS解决方案的策略,其中特别介绍了如何通过采用智能化的无线资源管理算法,提高频谱利用率,同时又保证用户的QoS。这对于研究3G技术,特别是UMTS系统的研制开发、3G网络/系统优化都很有参考价值。     

思博伦LTE端到端业务质量测试解决方案

移动通讯演进到LTE,要求端到端全IP传输,并在此基础上,对业务的支持从单一的话务业务扩展到包括数据、语音、视频等各种应用服务。由于相对于有线网络,无线网络存在高时延、低带宽和不稳定等因素,所以在测试方面,除了进行L2～L3性能测试以外,需要从用户体验角度出发,进行真实业务服务质量的验证。思博伦通信赵隽琪所撰《思博伦LTE端到端业务质量测试解决方案》一文详细介绍了思博伦通信LTE端到端业务质量测试解决方案。此方案可以从基本功能和性能,QoS能力,真实应用业务仿真和质量测试,现网应用场景测试等方面对LTE系统进行端到端的研发测试、选型验证和运维验证。     

从NG—SDH到PTN的多业务融合承载平台

新型的业务不断涌现,不单只有WLAN、3G、WiMAX等无线业务,还有Triple play、HDTV、VoD、以太网商业用户和存储类业务等,这些业务都是天然的IP业务。不断增长的数据业务需求进一步驱动传送网络的发展和融合,要求新的融合的传送网络能够继承类似SDH的电信级特征和IP网络的优势,例如快速保护倒换、可管理性、易用性、高效带宽统计复用、多业务接口、网络可扩展性、可测量的端到端QoS以及低成本。     

基于用户体验的4G端到端业务与网络质量测试工具

中国移动自主研发了基于用户体验的端到端业务与网络质量评测工具,实现端到端业务质量和性能评测,实现现网真实"用户感知"的可测、可量、可知.基于用户体验的4G端到端业务与网络质量测试工具是面向业务质量和移动互联网网络测试的专业工具,支持Android、iOS操作系统,贴近用户的真实使用场景,实现真正以"用户"为中心的端到端业务质量评测,具备基础通信、网络性能、用户体验、终端性能等测试能力,能够从用户的角度反映实际业务和网络的运行情况、性能质量.该工具多个版本全面支撑了中国移动全网4G试商用城市验收测试、4G全网常态化端到端服务监测,填补了业内自有用户体验评测工具的空白,受到多方好评.     

IP电话接入端QoS服务的设计与实现

IP电话系统的业务是实时业务，对延迟、抖动等因素十分敏感，而IP网络本身并不提供QoS服务，所以QoS服务实现是IP电话系统必须研究的内容。本文在新一代电话体系结构的基础上设计了一个带控器来控制H.323zone的出口带宽资源，以提供端QoS服务。从而带控器与主干QoS服务一起构成IP电话系统的端到端QoS服务系统。     

光网端到端高宽带业务接入方案探讨

目前,光网络中OLT所用主要设备以PON为主,少量10G PON为辅,随着4K视频、企业云服务业务发展,G/EPON已不能完全满足日益增长的带宽需求。文章基于三种PON设备并存的现状,提出运营商在满足更高带宽、更低建网成本的情况下,如何更快速的实现高带宽(主要为500M、1000M)业务接入、老用户提速升级及业务安装,实现高带宽业务快速体验。     

一种基于分层架构的端到端QoS保障系统与方法

随着互联网+、NFV/SDN、5G/MEC、业务编排器的快速发展,业界对端到端质量保障需求旺盛,通过研究一种基于分层架构的端到端QoS保障系统与方法,采用新的QoS质量保障系统,通过省级业务编排器,与全国业务编排器、省分/地(市)核心云、地(市)边缘云、省内核心网、城域网、传输网、宽带网对接为全网提供端到端的全业务Qo...     

电信运营商互联网视频业务集约运营建设方案探讨

对电信运营商互联网视频业务集约运营的建设方案进行了探讨,从业务发展模式、CDN建设方案、网络承载方案、服务质量保障方案等方面进行了研究,对电信运营商的视频业务运营和网络建设具有借鉴意义。     

Analysis of effective capacity for visible light communication systems with mobility support

Visible light communications (VLCs) are competitive and attractive candidates for next generation indoor communication networks which are required to support mobility and guarantee delay QoS (Quality of Service) for users. User movement in VLC systems changes the propagation path, including the distance, the angle of incidence and irradiance, all of which have a significant impact on channel gain and link capacity. In this paper, we present a user mobility model for indoor VLC systems with the help of discrete time Markov chain theory. Considering a service process with temporal correlation caused by user mobility, we derive the effective capacity (EC) for VLC systems which characterizes the capacity performance subject to the user’s statistical delay QoS. Moreover, the effect of the user’s mobility on effective capacity is revealed.     

基于3G用户优先级的流量优化研究

在移动互联网流量规模增长、应用和内容极大丰富、用户个性化需求不断提升的背景下,如何在满足用户不断发展的业务需求的同时,提升网络运营价值,是运营商在移动互联网时代所亟待解决的难题。本文通过对3G用户行为精细化分析,实施EV-DO用户级QoS流量优化,根据用户价值级别和业务属性合理调度网络资源,提升3G用户感知和流量价值。     

Do we need quality of service in the customer environment?

The paper introduces the concept of quality of service (QoS) in the customer environment, as related to broadband customer premises equipment. The paper describes the BT vision for the customer environment, with a QoS-enabled ‘customer gateway’ and ‘home networks’ delivering a range of broadband services to the end user. The reasons behind the need for QoS are discussed and the differing requirements of the downstream (network to end user) as distinct from the upstream (end user to network) data paths are described.Incorporating downstream QoS protocols in the customer gateway is less likely to give an effective perceived performance benefit due to the simple fact that the traffic priority is essentially predetermined by the network/service provider and only marginal benefits can be seen by its application. Extending downstream QoS across the home network will be essential to provide an effective customer experience. The paper looks at the future strategy for implementing QoS, not just within the customer gateway, but also up to the end terminal, as it should be remembered that all elements of the service such as end user appliances, home networks, customer gateways, the network provider and service provider all have their own distinct parts to play to guarantee the best quality of service and customer experience.The paper concludes that the predominant area for QoS implementation in the customer environment, is in the upstream direction where even a basic QoS implementation such as simple queuing is likely to give noticeable improvements in the customer experience. New real-time services such as voice over IP (VoIP) will require upstream QoS.Thus it should be possible to specify QoS enhancements that are straightforward and likely to be simple (and therefore cost effective) to implement, in low-cost CPE. The paper concludes that it is essential that the next generation of customer gateways and home networks, support appropriate QoS functionality to support new services delivered over BT’s network.     

精确识别MPLS L2VPN QoS方法

随着MPLS VPN技术在企业网络中的广泛应用,同时也对VPN的服务质量(QoS)提出了更高的要求。精确识别MPLS L2VPN QoS的方法是通过在PE侧对用户L2VPN数据包进行深入分析提取OSI七层协议中关键信息,从而得到该报文的优先级别,实现网络监控及流量控制等功能。实际应用表明, 精确识别MPLS L2VPN QoS方法可识别现有网络各种业务流量,单独采用不同的QoS规则,实现各个业务系统之间的隔离以及企业信息外网与信息内网的高效结合,保障电力网络的安全稳定运行。     

机会波束成形系统中一种新的调度方案

主要研究机会波束成形系统中的调度算法,将宽带无线IP网络调度算法应用于机会波束成形系统。提出了一个保证用户QoS要求的新方案。数值分析表明,所提的方案较之传统的方案在保证系统吞吐量和用户间公平性的同时,也保证了用户的QoS。     

应用RSVP提高视频会议系统业务传输质量

传统的IP网络基于尽力而为的设计思想,不对上层承载业务提供任何服务质量保障。而视频会议应用对服务质量要求相对严格,延迟及延迟抖动会降低用户的应用体验。针对基于IP网络的视频会议系统中缺少服务质量保障的问题,提出了在视频会议系统中部署资源预留协议以提供服务质量保障的方案,并且在Vxworks系统中完成资源预留协议的开发。为了验证方案效果,分别在中度负载和重度负载的情况下对业务性能进行测试。测试结果表明,该方案能够为视频会议系统提供有效的服务质量保障。     

Quality user experience in advanced IP video services

The continuous improvement in the delivery of advanced video services, along with evolved technical conditions at the client side, contributed to the appearance of new methods for the evaluation of quality of service (QoS) and quality of experience (QoE) from the user’s point of view. This article describes the development of a model that correlates QoS parameters and QoE factors with impact on the variation of the user’s perception of the quality. A quality assessment test was performed with 40 participants that ranked more than 140 videos. The detailed analysis of the collected data from the test allowed to conclude that all the considered factors had significant impact on the perceived quality. Those factors were aggregated in a single model using linear regression techniques to join their behavior and associate adequate weights to each factor. The results from validity tests of the model were encouraging, achieving 99 % of accuracy. This model can be considered a new no-reference metric to infer the perceived quality, applicable in many contexts, but essentially as a tool for service providers to estimate the rank customers may give to a content.     

IPTV QoS adaptation for multi-homed mobile terminals in a new IMS based architecture

With the emergence of multimedia applications that have real constraints, ensuring a satisfying quality of service to mobile users presents a big challenge in heterogeneous wireless networks. In such environment, the asymmetry of the available resources as well as user’s mobility can cause offered QoS degradation. In this paper, we propose the use of the Stream Control Transmission Protocol (SCTP) within a QoS adaptive IPTV services in a novel IMS architecture. The multi-homing feature and the partial reliability extension allow improving the network performance and increasing the user satisfaction. In addition, we have proposed an mSCTP based mobility scheme to guarantee service continuity during handover to IPTV users over IMS. The handover decision includes Perceived QoS (PQoS) measurement reflecting the user satisfaction and Media Independent Handover (MIH) information. An analytical study of the time required to perform IPTV adaptation, show that our approach improves the performance by minimizing the delay and maximizing the user satisfaction.