通信的

An interval transmission channel of the truck communication system is used as exchange system line; the concerted action of controllers in different stations choose the same relay channel to realize the communication among the users on different stations; an interoffice truck circuit is arranged between two end stations in the system, in order to realize the communication between the system and the exterior.

本发明为一种集交换和传输为一体的中继通信系统，即用中继传输系统中的区间传输信道作为交换系统的线路，由不同站的控制器协同动作选通同一条中继信道实现不同站用户间的通信，该系统两端站设置局间中继电路，实现本系统与外界的通信。

In this way, the flow control states of the local terminal and the communication remote terminal are assured to be consistent, and the packet loss situation is avoided happening due to the disorder of the flow control state in the communication process between the local terminal and the communication remote terminal, thereby improving the work quality of the switch to a great degree and the stability of the system.

这样，便保证了本端与通信对端的流控状态的一致性，使本端和通信对端在通信过程中不会因流控状态的错乱而发生丢包现象，这在很大程度上提高了交换机的工作质量，也提高了系统的稳定性。

With the further development of computer network, communication network and the distributed system, communication protocols are more and more complicated, formal description technology plays the indispensable role in the network protocol design. LOTOS - as one of the ISO standards of FDT, is designed for distributed systems, especially for communication service and communication protocol.

随着计算机网络、通信网络以及分布式系统的不断发展，通信协议有日渐复杂化的趋势，形式描述技术在网络协议设计中占有举足轻重的作用，作为国际化标准之一的LOTOS技术是专为分布式系统设计的形式描述技术，特别是通信服务和协议。

To resolve the problem of the communication and control subsystem design and implementation on the Multi-processor Tight Coupling YH Digital Control Wire-cut System, the paper has discussed the communication and processing controlling method between master CPU and slave processor controlling board under Windows environment.

针对多机紧耦合YH数控线切割系统通信与控制子系统的设计与实现课题，讨论了在Windows环境下实现主CPU与从处理器控制板的通信与加工控制方法，对多机紧耦合系统中的通信代码设计、数控加工控制软件设计及其在YH数控线切割系统上的实现作了详细的叙述

In order to confront with the increasingly complicated electromagnetic environments and adapt to the development necessary of the integrative electronic warfare,this paper studies the integrative reconnaissance technology for radar and communication signals from single-platform,analyzes the characteristics of radar and communication signals in detail from the different aspects of the electromagnetic frequency band,function,power,signal waveform and modulation mode,researches some key technologies to realize the integrative reconnaissance for radar and communication signals,such as integrative microwave front technology,digital receiver technology,digital signal processing and modularity technology,especially analyzes and researches the integrative signal sorting and identification technology deeply.

为对抗日益复杂的电磁环境，适应一体化综合电子战发展的需要，对单平台雷达/通信侦察一体化技术进行了研究。从电磁频段、功能、功率、信号波形及调制方式等不同角度，详细地分析了雷达与通信信号的特点；对实现雷达/通信侦察一体化的一体化微波前端技术、一体化数字接收机技术、一体化数字信号处理技术、模块化技术等关键技术进行了研究，尤其是对一体化信号分选、识别技术进行了深入的分析研究。

Chapter 2 gives the structure design of the network sensor node 、 circuit diagram and PCB.

第四章讨论了无线传感器网络的数据链路层的功能，并且指出了存在于无线传感器网络中的通信问题，最后分析无线报警网络在链路层协议的控制下进行网络节点间的通信和网络通信中问题的解决。

The proposed algorithm is a particle swarm optimization based two phases process, one is mapping core onto NoC, and another is the allocation of the routing path. The proposed algorithm uses a novel representation for PSO particle which minimizes the NoC communication energy consumption and keeps the NoC link load balance.

PLBMR是一个两步PSO优化算法，在建立NoC的通信功耗和链路负载的数学表示的基础上，采用一种有效IP核映射与路由分配的PSO粒子编码方法，使得NoC的通信能量消耗最小以及保证NoC的通信链路负载平衡。

The method comprises: 1 when GSM module needs to select a network, it firstly decides if there is a 900 MHz frequency range network capable of meeting the communication need; if yes, then selecting the 900 MHz frequency range network as the working network of the dual-mode mobile phone; otherwise, entering the step 2; 2 deciding if there is a 1800 frequency range network; if not, then returning the step 1 to reselect network; if yes, then selecting 1800 frequency range network as the working network of the dual-mode mobile phone.

本发明公开了一种PHS及GSM双模手机中GSM模块择网的方法，涉及无线通信领域，为解决PHS及GSM双模手机不同网络间信号干扰而提出，采用的技术方案为：(1)GSM模块需要择网时，首先判断是否存在满足通信要求的900MHz频段网络，若存在则选择该900MHz频段网络作为所述双模手机的工作网络，否则进入步骤(2)；(2)判断是否存在符合通信要求的1800MHz频段网络，若不存在则返回步骤(1)重新择网；若存在则选择1800MHz频段网络作为该双模手机的工作网络。

A kind of multifunctional hardware-system of monitoring device for motor vehicles road test was designed, based on vehicles-bus technology and GPRS.which adopts AU1250 embedded CPU to acquist data from the CAN/LIN bus in vehicles traffic environment ,with GPS and image monitoring as environment monitoring complements, at the same time to interact with monitoring center,function of vehicle road test data acquisition and remote monitoring and management was realized.

&一种多功能汽车行车试验监控装置硬件设计&一文介绍了一种具有远程GPRS通信模块，局部CAN、LIN 总线通信，具有位置信息采集GPS模块和图像模块的硬件架构，较好的进行了硬件设计，但文中缺乏明确的设计目标，如通讯带宽需求如何，选择的GPRS通信模块是否合乎要求，能否实现实时图像远程传输；同时文中缺乏实际验证数据，论文题目的&多功能&体现在何处。

Firstly, this paper puts forward an improved authentication and key distribution scheme for internet environment, in which we adhibit multilevel authentication center, encryption technology of DES, RSA and one-way function to actualize the safety of communication among the different user on network and reduces the workload of the authentication institution; at the same time, this scheme can also assure the security of network. Besides, it use the temporary symbol and the responds" sign of both-side correspondent to replace time stamp and applies them to internet communication to countercheck "rebroadcast attack and accordingly resolves the problem that it needs synchronization for network clock.

本文在首先提出一种改进的Internet网络环境下的认证及密钥分配方案，该方案考虑采用了多级认证中心，DES、RSA和单向函数加密机制，实现了网络上不同用户间的安全通信，降低了网上认证机构的工作量，同时也能够保证网络的安全性；并用通信双方的临时标志和响应者标识来代替时间戳应用于Internet通信中以防止&重播&攻击，从而解决了以往需要网络时钟同步这一难题。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。