通信网络

This paper analyzes the security in a mobile telephone network with emphasis on its identification authentication, data encryption, key assignation and integrity authentication.

分析了移动通信网络中的不安全因素，重点讨论了移动通信网络中的身份认证和密钥分配，数据加密与完整性检测方案，并对其安全性进行了详细分析。

Company has experienced for many years engaged in communications network products and communications network services to young people.

公司下有一批经验丰富，多年从事通信网络产品和通信网络服务的年轻人。

First, we study and research existing UAN and its protocols at home and abroad. And we do them abroad in deep-going way.

首先学习、研究了现有国内外有关通信网络及其协议，并对国外现有水声通信网络进行了较深入的研究和分析。

Then the implementation scheme of multimedia communication terminal based on PC is presented, and the structure of hardware and software is given.

多媒体通信技术可分为三部分：即多媒体通信终端技术、支持多媒体业务的通信网络和多媒体通信应用系统。

For the breaker's "four remotion" communication requirements, the paper studies Modbus fieldbus communication protocol which is widely used in low-voltage electrical fields, and bring forward a plan of intelligent controller communication network based on Modbus fieldbus, which realizes the communication of intelligent controller and PC, and is good for the PC's centralized monitoring and management to the intelligent breaker.

针对断路器的"四遥"通信功能要求，论文研究了在低压电器领域广泛使用的Modbus现场总线通信协议，提出了基于Modbus总线的智能控制器通信网络设计方案，实现了智能控制器和PC机的双向通信，有利于实现PC机对智能化断路器的集中监控和管理。

The main research issues of RRM on the circumstances of different standard wireless communication systems and various services are also discussed in the paper.

文章结合当前正在研究的后3代(B3G)、第4代(4G)移动通信系统的发展和处于运营及推广阶段的第3代移动通信系统，分析了未来移动通信系统中无线资源管理系统的关键技术，探讨了多体制标准下的无线通信网络和多种业务情况下的无线资源管理的研究方向。

The key technologies of radio resource management for future mobile communication system are analyzed, based on the development of B3G and 4G mobile communication systems and the third-generation mobile communication system. The main research issues of RRM on the circumstances of different standard wireless communication systems and various services are also discussed in the paper.

文章结合当前正在研究的后3代(B3G)、第4代(4G)移动通信系统的发展和处于运营及推广阶段的第3代移动通信系统，分析了未来移动通信系统中无线资源管理系统的关键技术，探讨了多体制标准下的无线通信网络和多种业务情况下的无线资源管理的研究方向。

The key technologies of radio resource managementfor future mobile communication system are analyzed, based on the development of B3G and 4G mobile communication systems and the third-generation mobile communication system. The main research issues of RRM on the circumstances of different standard wireless communication systems and various services are also discussed in the paper.

文章结合当前正在研究的后3代、第4代移动通信系统的发展和处于运营及推广阶段的第3代移动通信系统，分析了未来移动通信系统中无线资源治理系统的要害技术，探讨了多体制标准下的无线通信网络和多种业务情况下的无线资源治理的研究方向。

Main research utilizes mobile network to control long-rangly publically, network data transceiver , control equipment and interface , centre computer and interface , equipment of communication network of transceiver control software ,etc.Clear up the interface signal of the data transceiver GSM engine module and control yard, it is mainly some materials that knowledge of AT order and GSM module are dispatched from the factory.

主要研究利用公共移动通信网络进行远程控制、网络数据收发器、控制设备与收发器的接口、中心计算机与通信网络的接口、设备控制软件等弄清楚数据收发器GSM引擎模块的接口信号和控制码，主要是AT指令相关的知识和GSM模块出厂的一些资料。

To help improve Henan Netcom Company's ability of competition, we also make the environmental analysis, the strategy analysis and the competitive analysis; distinct it's external internal strength as well as weakness opportunity, threat. We assure that the core competition abilities include advanced telecommunication network, large numbers of subscribers and various services. Then this text analysis the competitors, the potential competitors, substitutions, equipment providers and customers by using Porter theory, compare each competitor's ability and the field that they compete drastically. Through conforming the costumer's utilitarian and personal services requirement, it discover that the key factor of development is holding the group subscribers. By Boston Matrix we find out key services, staring services, problem services, then study which service is the most important for us and which one should be throw off. Base on analysis above, this article concludes the general strategy and the service strategy of Henan Netcom: enforce the stable development strategy for certain period, and perform expansion strategy when time is fit.

在对河南省通信公司的发展战略的分析中，以战略管理理论战略分析为基础，进行了河南省通信公司的内部的优势和劣势以及外部机遇和威胁分析，确定了河南网通公司的优势是先进的通信网络、庞大的客户资源和丰富的业务；运用波特五种竞争力分析方法，通过竞争对手分析、潜在竞争对手分析、替代品分析、供应商分析、用户分析，探讨了几个竞争者实力对比和相互竞争激烈的领域；明确了用户需求是在方便和实用的同时，追求个性化服务，得出了今后竞争的重点是保住关键的大客户；运用波士顿矩阵分析法，找出了河南省通信公司的金牛业务、明星业务和问题业务，研究了公司各种业务产品的发展重点和取舍战略。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。