GSM网络优化——干扰分析

网络优化是GSM系统建设中一个非常重要的过程,其目的是提高网络通信质量.文章先介绍了GSM网络干扰的分类,然后分析了产生网络干扰的原因,以及干扰的定位方法,最后结合移动通信网络优化工程实例,介绍如何分析测试数据,掌握网络实际运行情况,通过调整频率规划、小区参数达到抑制干扰的目的,从而提高系统性能,改善网络服务质量,使现有网络资源获得最佳效益.     

GSM网络优化-干扰分析

网络优化是GSM系统建设中一个非常重要的过程,其目的是提高网络通信质量.本文先介绍了GSM网络干扰的分类,然后分析了产生网络干扰的原因,以及干扰的定位方法,最后结合移动通信网络优化工程实例,介绍如何分析测试数据,掌握网络实际运行情况,通过调整频率规划、小区参数达到抑制干扰的目的,从而提高系统性能,改善网络服务质量,使现有网络资源获得最佳效益.     

CDMA直放站的网络规划

网络规划是移动通信网的建设中极其重要的环节,它对于网络的建设成本与网络建立后的运行质量都有重要的影响.本文通过对CDMA直放站的分析,结合CDMA网络的特点,重点阐述了由于直放站的引入对网络产生的不利影响,以及通信运营商和设备制造商应如何对其进行网络规划.     

净化网络 构建和谐通信环境

1 引言 （1）“网络透视” “网络透视”是指利用移动通信网络运行过程中产生的海量数据进行分析和数据挖掘,找出网络中存在的漏洞和薄弱环节,从而保证网络安全和运行质量,就像给人的身体做透视检查一样。通过“网络透视”,定期对网络安全和运行问题进行细致深入的诊断,分析出“病因”,     

GSM网络上行干扰的排查及解决方法

在日常的GSM网络优化工作中,上行干扰已经成为影响网络质量的突出问题,然而产生GSM网络上行干扰的原因有很多,不同的原因解决方法会有所不同,这里给出了针对各种原因产生干扰的解决方法,重点介绍了直放站产生的上行干扰.最后对上行干扰的排查流程做了重点分析,给出了优化思路和优化处理方案,帮助快速定位并解决上行干扰,从而优化网络质量、提高用户的感知度、保障移动 GSM 网络畅通运行.     

4G网络优化

网络优化是维护网络正常运行,保障网络运行质量的重要手段,但其技术难度大,工作复杂,运营成本较高.在2G时代,移动运营商已建立了一批网络优化管理平台,很好地支持了网络的正常运行,提高了网络运维管理效率,降低了网络运维成本.但随着4G网络的普及移动互联网的迅速发展,数据业务逐渐成为移动通信网络的主流业务,由此也对网络优化提出了新的要求.     

HFC网络中电缆连接器理论与实践分析

本文分析了电缆连接器的质量对HFC网络中传输的各类信号的影响,从结构、材料、电性能参数、机械性能、环境适应性、安装过程、可靠性等方面阐述了HFC网络中电缆连接器的各项质量要求,并给出在实际的网络维护维修中的一些实例,表明电缆连接器对数字信号质量、网络中的噪声情况的影响.最后得出结论电缆连接器的质量对HFC网络的运行起到十分重要的作用,必须从保证产品本身质量和施工工艺两个方面来控制电缆连接器的质量.     

移动通信网络基站优化探讨

移动通信网络中,采取基站优化的方法,完善网络的运行,以此来提高网络的通信质量.基站优化是一项重要的工作,能够拓宽移动通信网络的覆盖范围,一方面提高基站的运行效率,二来降低基站建设的成本规模,进而体现移动通信网络的运行效率.所以本文主要探讨移动通信网络基站优化的相关内容.     

陕西联通VoIP网络的呼损分析与优化

随着网络的快速发展,网络优化在网络运营中日益重要.在评价网络运行质量时,各项业务的网络接通率与应答率是衡量电信网络运行的主要标准,因而提高网络接通率和应答率对提高全网效率和服务质量具有极其重要的意义.     

TD-SCDMA话音业务倒流GSM网络的研究

该文简要分析当前TD-SCDMA网络整体较闲、GSM网络整体较忙的基本情况,指出TD-SCDMA话音业务存在不同程度的在GSM网络承载的现象,并从终端性能、用户行为、设备运行质量、网络覆盖和优化等方面对该现象进行了原因分析,最后提出了改善建议.     

网络经济离不开网络安全

专家曾预言,2000年的上半年将是数字革命的历史转折点,其具体含义是指网络正在从非主流地位转化为主流地位。网络经济正在从美国向世界各个地区扩散。在发展新经济的指导思想下,欧洲各国都憋着一股劲向前赶,以期赶上美国。在亚洲,传统经济向新经济的转变尤为明显,我国已有2250万人上网,2000年7月,企业上网工程正式启动,在这之前的政府上网工程取得了阶段性成果,电子商务也由一个时髦名词变为拥有无数实践者和牺牲者的创业模式。     

光网络拓展了DWDM网络的性能

Lucent Technologies公司的研发机构——批在贝尔实验室工作的科学家,开发出了一项能够显著延伸DWDM网络性能范围的新技术。这项被称为LambdaXtreme Transport的技术可以在不采用电子再生的情况下在长达     

网络结构中容量评估方法

在网络结构的评估中,根据无线网络特征,将无线网络结构分为覆盖、容量和频率三个维度。容量作为其中一个最为主要的方面,在评估中,包括两个主要方面,即容量是否充足,容量是否均衡,通过制定了4个与容量相对应的指数,通过量化的数据对网络的容量做出一个合理科学的评估分析。     

本地网汇接局交换网络的调整

通过对哈尔滨本地网市话汇接局和无线市话汇接局现状和存在的问题的调查研究，结合本地网未来的发展趋势，提出了本地网汇接局的交换网络调整方案。     

浅析我国数字集群的专网、共网与公网

从数字集群的特点和作用出发，结合我国数字集群发展的现状．分析了数字集群专网．共同和公阐三者关系．依据信息产业部对数字集群的发展政策辩证地论述了我国现阶段数字集群通信系统的发展观。     

Wide area ubiquitous network: the network operator's view of a sensor network

This article describes a network concept called the wide area ubiquitous network (WAUN) and its research activities. WAUN is a network for sensors and actuators, and can support low-end wireless terminals, which are expected to be used for new applications. Among the many types of R&D being performed in the WAUN project, this article focuses on the feasibility of its basic feature and target. The basic feature is ?wide coverage using very-low-power-consumption terminals,? and its specific target is a ?5-km cell radius using 10-mW transmission power terminals with a battery life of 10 years.? The results of a basic field experiment and a laboratory experiment suggest that the target seems to be feasible using wireless technologies such as diversity reception (with additional future effort to improve the packet error rate for use in business districts) and LSI technologies such as a power switch fabricated in a CMOS/SOI LSI.     

网络环境下车联网通信协议的研究

随着我国汽车保有量的剧增以及我国计算机网络技术的不断成熟,车联网成为人们生活和工作的一项重要辅助工具,也成为政府进行交通管理的重要辅助工具。因此,对车联网通信协议和车联网的研究就显得意义重大。文章首先论述了车联网的概念以及研究背景,接着阐述了车联网通信协议的研究内容,最后列举了车联网未来的一些应用,以期能为车联网通信协议的研究者和车联网的使用者提供一些有意义的参考。     

The ATM Forum's private network/network interface

The ATM Forum completed the first version of its private network/network interface (PNNI) in March 1996 and many ATM switch manufacturers are now offering early implementations. PNNI offers a different type of internetwork or internodal interface from the traditional Signalling System No 7 based approach favoured to date by 'public' network operators, such as BT. In spite of its name, however, PNNI may find its place in network service provider networks as well as in 'private' or customer networks. Some of the perceived limitations of the current specification for such an environment are currently being addressed in version 2, tentatively due for completion in the second half of 1998.The PNNI really consists of two parts, a signalling protocol based around the ATM Forum's UNI signalling specification, and a dynamic source routeing protocol. This paper aims to provide an overview of the functionality and mechanics of PNNI, and to compare and contrast with the functionality offered by ITU-T's B-ISUP.     

Neural network design of a banyan network controller

The algorithm for choosing nonblocking sets of data cells from the queues can significantly affect the throughput and queuing behavior. The authors present an algorithm that is shown to have maximum throughput. This algorithm is reduced on a banyan network to a constraint satisfaction problem by using an equivalence approach. To gain the required computational speed, the massive parallelism of neural networks is used. A neural network design using multiple overlapping winner-take-all circuits is defined. This is shown to be stable and to result only in nonblocking sets of data cells. An efficient interface between the neural network and the queue is also defined. The performance of the banyan with a neural network controller is compared to a noninternal-blocking switch with various controllers. The banyan is within a factor of two of the nonblocking switch     

Efficient software-defined passive optical network with network coding

The huge increase in broadband service requires much more bandwidth than ever before; however, due to the cost sensitivity, it is not possible to pursue high transmission rate blindly in the access network, which requires us to consider how to improve network efficiency. In this paper, a software-defined passive optical network architecture with network coding (NC) is proposed to reduce downstream bandwidth consumption and thus increases the throughput and network efficiency. To flexibly implement the coding operation on local peer traffic, the NC pair management scheme is provided and keeps the compatibility with the current multi-point control protocol (MPCP) in a single optical line terminal (OLT). Considering the trends in OLT pooling and the requirement of smooth network upgrade, software-defined networking (SDN) techniques are applied in the NC-based passive optical networks. Through re-arranging the affiliations between the OLTs and optical network units (ONUs), the local traffic between peer ONUs will be led from non-NC-supported OLTs to NC-supported OLTs, and then the downstream efficiency will be still quite high even in a hybrid OLT pool. The experiments and evaluation results show that, the software-defined passive optical networks with NC reduce nearly 50 % occupied downstream bandwidth, when there is local traffic between peer ONUs, even in a hybrid OLT pool.