Modbus 协议是应用于电子控制器上的一种通用语言。通过此协议，控制器相互之间、控制器经由网络（例如以太网）和其它设备之间可以通信。它已经成为一通用工业标准。有了它，不同厂商生产的控制设备可以连成工业网络，进行集中监控。
Modbus protocol is used in a common language electronic controller. Through this agreement, between the controller, the controller can communicate via the network (such as Ethernet) and other devices. It has become a common industry standard. With it, different manufacturers of industrial control devices can be connected into a network, centralized monitoring. (2014-07-25, WORD, 17KB, 下载3次)
TD-LTE数字蜂窝移动通信网
Uu接口技术要求
第2部分：物理信道和调制
TD-LTE Uu digital cellular mobile communication network interface technology requirements- Part 2: Physical channels and modulation (2014-04-14, WORD, 3525KB, 下载2次)
《TD-SCDMA无线接入网信令介绍》是我公司培训课程中的高级课程。综合考虑了培训对象的基础知识水平，以及对TD-SCDMA系统的了解需求，本教材从TD-SCDMA整网系统级的角度，给出各种端到端呼叫及业务处理的流程定义、设计及描述。从而满足相关产品级文档所提出的对各种TD-SCDMA呼叫及业务功能特性和网络解决方案的支持。
本教材适合从事是系统设计、实现及测试的技术人员，也可用于产品管理及市场人员阅读。
TD-scdma signal process. (2012-05-08, WORD, 1787KB, 下载3次)
opnet 12个实例中的第一个以太网。
one of opnet examples the ethernet. (2012-03-15, WORD, 355KB, 下载6次)
2G与3G互通技术实现文章，随着3G的日益临近，国内运营商正筹备各种资源，为3G建设做准备。在GSM网络向WCDMA网络演进过程中，运营商将会面临很长一段2G/3G网络混和共存的时期。文章从3G网元的设置、2G网元的升级以及2G/3G网络互通等多个方面。
2G and 3G interoperability technology articles, as 3G is approaching, domestic carriers are in the process of various resources, to prepare for the 3G construction. In the GSM network to WCDMA network evolution, operators will face a long period of coexistence of mixed 2G/3G network. Articles 3G network elements from the set, 2G network elements and the 2G/3G network upgrade and many other aspects of interoperability. (2011-02-23, WORD, 162KB, 下载3次)
TD-SCDMA技术独立和混合组网对比分析.TD的东西不多，补充下
for TD-SCDMA (2010-06-30, WORD, 111KB, 下载1次)
中国移动第三代移动通信网网络管理技术接口规范－3G直放站部分_数据集技术要求(V1.0-2007).doc
China Mobile third-generation mobile communications network management technology Interface Specification-3G Repeater part of the technical requirements of a data set _ (V1.0-2007). Doc (2007-08-14, WORD, 1327KB, 下载24次)
中华人民共和国通信行业标准
900/1800MHz TDMA数字蜂窝移动通信网SIM-ME应用工具箱技术规范
900/1800MHz TDMA Digital Cellular Mobile Telecommunication
Netowrk Technical Specification of SIM
Application Toolkit for(SIM-ME)interface
the People's Republic of China Communication Industry Standard 21.4mm TDMA digital cellular mobile communications Network SIM-ME application toolkit TDMA technology standard 21.4mm Digital Ce llular Mobile Telecommunication Tech Netowrk nical Specification of SIM Application Toolki t for (SIM-ME) interface (2007-03-31, WORD, 322KB, 下载36次)
中国联通GSM直放站系统统一监控管理协议规范1.0
本技术规范规定中国联通GSM直放站网络管理协议和直放站设备的网管接口技术要求。
直放站网管系统一般由监控中心、通信信道和直放站三部分组成。监控中心的主要职能是对众多厂家提供的多类型、多数量的直放站进行“集中控制，统一监管”。监控中心对直放站的操作主要包括参数设置、数据查询、告警处理三种主业务；直放站作为被监管对象，在被动应答来自监控中心的命令外还必须将当前故障信息以告警命令的形式主动上报给监控中心。监控中心和直放站的通信方式可以是RS232串口直连、有线MODEM拨号和GSM短信方式等
China Unicom GSM Repeater Monitoring System unified management protocol specification 1.0 Technical Specification provides China Unicom GSM Network Management Protocol Repeater Repeater equipment and network management interface technical requirements. Repeater Network Management System by the general control center, communications channels and Repeater three components. Control center's main function is to provide manufacturers of a large number of diversified, multi-Repeater number of "centralized control, unified supervision. " Repeater control center for the operation, including the main parameter setting, data inquiries, warning handles three main business; Repeater as by the regulatory target, in a passive response from the control center orders must also be present fau (2007-01-24, WORD, 76KB, 下载45次)