pdsn中文是什么意思

• 分组数据服务节点

• "pdsn packet data support node" 中文翻译 :    分组数据支持节点
• "pdsm" 中文翻译 :    香港警察卓越奖章
• "pdsp project defined standard processes" 中文翻译 :    项目定义标准过程
• "pdsch physical downlink shared channel" 中文翻译 :    物理下行共享信道
• "pdsta" 中文翻译 :    芳砜纶
• "pdsch physical dedicated shared channel" 中文翻译 :    物理专用共享信道
• "pdstow" 中文翻译 :    帕德斯托
• "pdsa plan-do-study-action" 中文翻译 :    品质之
• "pdt" 中文翻译 :    PDT ＝Pacific Daylight Time 太平洋夏季时间。
• "pdsa" 中文翻译 :    工厂设计软件包; 管理模式

• Finally , with the compressing performance test , the testing results are presented . through this new algorithm , the average size of data packet is around 50 % of original one and the data transmitting velocity nearly doubled
  测试结果显示通过mppc压缩可将数据报文大小压缩到原有报文的50 %左右,数据传输速率提高将近一倍,大大优化了pdsn系统的性能。
• The cmt system is made up of eight sub - systems : was , cs , lr , pdsn , omc , wau , cmg and csg . if different hardware platforms were used , the complexity of the whole system will increase greatly , so does the maintenance difficulty
  Cmt系统由was 、 cs 、 lr 、 pdsn 、 omc 、 wau 、 cmg和csg子系统构成，各硬件子系统单板若采用不同的硬件平台将使系统硬件的复杂度提高、且增加维护的难度。
• In pdsn system , data packet between ms and pdsn compressed by compressing algorithm can reduce the size of the transmitting packet , improve the efficiency of data transmission and support large number of simultaneous connected users
  在pdsn ( packetdataservicenode :分组数据服务节点)系统中,用压缩算法对移动用户与pdsn之间传输的数据报文内容进行压缩,可大大减小传输报文的大小,提高数据传输速率,支持更大用户的同时接入。
• This paper makes use of mppc algorithm to compress transmitting data in pdsn system and implements the function methioned above . first , this auther focuses on the expatiation of the working principle and system structure of pdsn and analyzing the dada transmission between ms and pdsn
  本文采用mppc ( microsoftpointtopointcompress :微软点对点压缩)压缩算法对pdsn系统中传输的数据报文进行压缩,并设计实现了该压缩功能。
• This paper is made in the background of the development of pdsn ( packed data service node ) , the core component of cdma2000 system . and we discussed the current and future situation of cdma2000 communication system and embedded systems . also , we utilized the linux platform to apply the testing platform of the accessing into pdsn
  本论文以开发第三代移动通信系统cdma2000中的核心设备pdsn (分组数据服务节点)为背景，讨论了cdma2000通信系统以及嵌入式操作系统的现状及发展趋势，利用linux平台实现了pdsn系统的接入测试平台，不仅完成了对pdsn系统的测试目标，而且有力的尝试了利用linux开发企业级别的通讯设备嵌入式系统。
• And it describes the position of the testing platform hi cdma2000 network in third chapter . in the forth chapter it details the interface between the testing platform and pdsn system and how to implement the access - testing platform under linux . last section figures out a conclusion
  第三章介绍了接入测试平台在整个cdma2000网络中的位置，第四章介绍了接入测试平台和pdsn之间的接口，然后具体描述了如何利用linux平台实现接入测试平台的主要功能，以及实现难点和相关的一些技术细节。
• With a combination of the design principles and characteristics of pdsn , a method for compressing data packet using mppc compressing algorithm is put forward . after studying ppp protocol and mppc compressing standards , an algorithm using packet matching sliding window buffer to code and decode is provided . considering not making a great change of current pdsn system , a mppc compressing module is designed and the function to compress data packet through vxworks platform is implemented
  作者首先阐述了pdsn系统的工作原理和系统结构,对移动用户与pdsn之间的数据传输进行了分析,并结合pdsn系统的设计原理和特点采用mppc压缩算法对数据报文内容进行压缩;然后阐述了ppp ( pointtopointprotocol :点对点协议)协议和mppc压缩标准,采用报文匹配的滑动窗口机制进行编码和解码;接着考虑在不对现有pdsn系统进行大改动的基础上,设计了mppc压缩模块,并基于vxworks系统平台实现了对数据报文内容压缩的功能;最后对压缩功能进行了测试并给出测试数据。
• Having made a synthetic consideration of systematic architecture character , we decide to design a common hardware platform in order to decrease the hardware complexity and improve the system stability . the platform can be used in some different sub - systems ( such as was , cs , lr , pdsn , omc , etc . ) with their own software running on it
  为降低系统硬件复杂度、提高系统可靠性，并综合考虑系统基于ip的结构特点，将部分硬件子系统单板设计为一个通用的硬件处理平台，该平台可以应用到was 、 cs 、 lr 、 pdsn和omc子系统。
• Currently , it ' s more and more popular to use linux as an embedded system in developing communication devices . but for some reasons in history , some traditional embedded systems , such as vxworks , psos , are still playing a main role in some large enterprise communication equipments . for an instance , the pdsn is also developed in the vxworks embedded system
  但是由于历史的原因，在一些大型的企业级别的通讯设备的嵌入式操作系统的开发中，主要还是采用比较成熟的一些嵌入式操作系统，比如vxworks ， psos等等，在本文中提到pdsn设备也是采用的vxworks嵌入式操作系统来开发的，但是linux也越来越显示出它的优势。