物理鏈路 的英文怎麼說

中文拼音 [wùlǐliànlù]
物理鏈路 英文
physical link
  • 物 : 名詞1 （東西） thing; matter; object 2 （指自己以外的人或與己相對的環境） other people; the outsi...
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 鏈 : Ⅰ名詞1. （鏈子） chain Ⅱ動詞（用鏈栓住） chain; enchain Ⅲ量詞（計量海洋上距離的長度單位） cable length
  • 路 : 1 （道路） road; way; path 2 （路程） journey; distance 3 （途徑; 門路） way; means 4 （條理） se...
  • 物理 : 1. （事物的內在規律） innate laws of things2. （物理學） physics
  • 鏈路 : chain circuit; periodic line; link; link circuit; path of chain
  1. Firstly, hart protocol is illustrated, its fsk physical layer specifies the transmittal manner of signal and voltage of signal. data link layer specifies the device type and data transport protocols

    Hart協議採用iso osi簡化模型， iso osi分為七個功能層， hart協議只用了第一、二、七層，即物理層，數據鏈路層和應用層。
  2. This thesis has introduced the development of the traditional wireless sensor network and current situation at first, then analyzed the principle an framework of the wireless sensor network, and the challenge to the traditional wireless sensor network technology for environmental monitoring, put forward the novel environmental monitoring system based on wireless sensor network technology, have recommended a kind of brand - new wireless node design plan of framework of wireless sensor network and node hardware to be designed and realized, then based on ieee 802. 15. 4 standard, this thesis analysed the design faces the wireless communication protocol stack used in environmental monitoring, have introduced the realize of physics layer, data chain layer, network layer, application layer. have solved the wireless sensor network data sampling, systematic energy - conservation optimize, this thesis summarized the preceding work finally, have looked forward to the development, application and commoditization in the future

    本文首先介紹了傳統無線傳感器網路的發展概況及現狀，然後分析了無線傳感器網路的原理與架構及其在環境監測對傳統無線傳感器網路技術的挑戰，接著本文提出了新穎的基於無線傳感器網路技術的環境監測系統架構設計，介紹了一種針對大氣環境監測的全新的無線傳感器網路節點的構架設計方案以及節點的硬體設計和實現，然後本文以ieee802 . 15 . 4標準為基礎分析設計了面向環境監測應用的無線通信網路協議棧，從工程角度介紹了物理層、數據鏈路層、網路層、應用層的設計實現，解決了無線傳感器網路節點的數據採集、節點互聯以及系統節能優化等問題，最後本文總結了前面的工作，展望了基於無線傳感器網路技術的環境監測系統在未來的發展方向和應用方式等幾個方面的發展遠景。
  3. Hsupa ( high speed uplink packet access ) is the new technique of r6, first in this thesis, the hsupa physical layer is introduced in detail. then base on the physical layer technique characteristic, according to the 3gpp simulation requirements and system simulation requirements, the hsupa downlink and uplink can be constructed by using matlab. then the data channel and control channel can be simulated, so the channels performance can be realized, provide the results can be provided to the system simulation, these ground the future practical applications

    Hsupa （ highspeeduplinkpacketaccess ） ? ?高速上行分組接入就是r6版本中的新技術，本文首先詳細介紹了hsupa物理層的技術特徵，然後以其技術特點為依據，按照3gpp的模擬需求和系統級的模擬需求，使用matlab構建hsupa的上下行物理層鏈路，對其數據通道和控制通道進行模擬驗證，從而了解通道的性能，為系統模擬提供模擬數據，為以後的實際應用打下基礎，達到預研的目的。
  4. The software system provides the switch with the ability to support each user monopolize lombps bandwidth, through which the user can use vod, voip and other digital services, and it also allows the switch to support multicasting, trunk, and traffic isolation. this thesis consists of five parts. the first chapter introduces ethernet access technologies and requirements for the switches

    通過軟體系統的配置，接入交換機能夠使用戶獨享10mbps帶寬，使用視頻點播、 voip等實時業務，支持組播以提高網路帶寬的利用率，支持鏈路聚合，在互連交換機的多條可用的物理鏈路間實現自動的負載均衡。
  5. Secondly, we build the physics and mathematical model of space - to - ground optical communication systems. and the link equation is deducted, based on which we calculate the communication link

    其次，建立了空-地激光通信系統的物理和數學模型，得到了空間光通信的鏈路方程，並依據鏈路方程進行了通信鏈路的模擬計算。
  6. Ethernet maps the two lowest layers of osi model ( seven - layer module ) : data link layer and physical layer and divides them to some function sublayers including pcs ( physical coding sublayer ), pma ( physical medium attachment ) and pmd ( physical medium depend ) in physical layer. in these sublayers, logical link control ( llc ) is implemented through operation system, nic driver software and medium access control ( mac ) and the physical layer below it are implemented by the nic

    以太網對應了osi開放系統模型（ 7層網路模型）的最下兩層：數據鏈路層和物理層，並將其細分為一些功能子層，包括數據鏈路層的llc （邏輯鏈路控制）子層和mac （介質訪問控制）子層，物理層的pcs （物理編碼子層） 、 pma （物理介質附加子層）和pmd廈門大學碩士學位論文摘要（物理介質相關于層） 。
  7. At first, information security in internet environment is analyzed in this paper, under the situation of an enterprise in jiangxi, in which the implement of supply chain management information system is carried out. then based on some approaches in common use for resolving information security, and based on the fact of this enterprise, this paper from point of view of physical isolation brings a new way named " wengcheng " strategy to resolve this problem

    本文首先就江西某企業實施網路環境下的供應鏈管理信息系統帶來的信息安全問題作了一定的分析，並在比較目前常用的幾種信息安全解決方案的基礎上，根據企業實際應用背景，從物理隔離的角度出發，提出了「甕城」信息安全解決總體架構模型。
  8. The problem is addressed through mathematical programming approach, the linear integer formulation is developed for optimizing the network throughput, and then the similarity between the original problem and the graph edge coloring problem is shown through the conflict graph concept. a column generation solution is proposed and several enhancements are made in order to fasten its convergence. numerical results demonstrate that the theoretical limit of the throughput can be efficiently computed for networks of realistic sizes

    一個對tdma機制的有效改進方法是空分tdma機制，它將無線結點之間的物理距離考慮在內，規定互相不干擾的通訊鏈路可以在相同的時間片內傳輸，從而減少了網路所需時間片的總量，從而提高了單位時間內可傳輸數據包的數量，即提高了整個網路的吞吐量throughput 。
  9. Chongqing expressway networking toll data communication network cotains 2 - ring and 8 - ray network structure based on expressway physical structure, setting up a trasmission trunk layer of sdh stm - 4 ( can be up - graded to stm - 16 ), and channel protection business entry layer consisting of sdh onu / olt stm - 1 ( can be up - graded to stm - 4 ). data exchange layer, through ip route exchange network above sdh network, forms 3 - level computer network structure of account settlement center - road section management company - toll station. to ensure obtaining original and reliable toll data from communication network, 2m circuitous chain is established between each toll station, accountsettlement center and road section management company, and also pstn dialing backup chain is set up between toll station and account settlement center. in order to maintain clock synchronization of the whole communication network, a proposal of sub - stage clock sychrononization signal network for differet network construction scale has been put forward in this design. in view of sensitivity and importance of toll data, this design particularly gives considerations of network safety and information safety for external and internel of network. therefore, communication safety, smoothness and reliability of networking toll system can be able to maintained in many ways

    重慶高速公路聯網收費數據通信網的結構是根據高速公路的物理結構構築了2環8射的網狀結構，建立了以sdhstm - 4 （可升級到stm - 16 ）的傳輸主幹層，以sdhonu / oltstm - 1 （可升級到stm - 4 ）組成的通道保護業務接入層。數據的交換層是在sdh網之上的ip路由交換網，形成了結算中心-路段管理公司-收費站之間的3級計算機網路結構。為從通信網路上保證收費數據的原始性和可靠性，每個收費站和結算中心、路段管理公司之間建立了2m迂迴鏈路，同時在收費站和結算中心之間建立了pstn的撥號備份鏈路。
  10. The content of this article is the research on the protocols for wireless communications on the media access control ( mac ) layer, which is a sublayer of the link layer, one of the five layers ( the physics layer, the link layer, the network layer, the transmission layer and the application layer ) which construct the stack of protocols for wireless communications. the emphasis of the research is on the applicability and superiority of two protocols on the mac layer

    本文的研究內容是mac （ mediaaccesscontrol ）層? ?無線傳輸的五層協議棧結構（物理層、鏈路層、網路層、傳輸層、應用層）中數據鏈路層的媒體接入控制子層? ?無線通信協議，重點研究兩種協議在傳感器網路應用中的適用性和優越性。
  11. Many network users use tcp / ip protocols that were composed of a series of protocol layers to finish their communication tasks. the user ' s data information is divided into a great many of data blocks. when the data blocks are transported through the layers of the protocols, they are added the controlled information in their headers

    網路用戶終端大多使用tcp / ip通信協議完成信息的傳輸任務， tcp / ip協議是層次結構的通信協議，用戶數據信息被劃分成一個個的數據分段，經過各層協議時，添加上各層協議的控制信息，作為數據分段的頭部信息，這個頭部信息說明了各相應層通信的規則，數據分段經各層封裝后最終形成物理數據幀通過物理鏈路送到通信網路上傳輸。
  12. The thesis is organized as below : in chapter 1, the background knowledge is given which is needed for study on bluetooth security mechanism and implementation. first bluetooth technology is overviewed including its develop history, radio interface, physical links, interference, network topology, core protocol, etc. next communication security is introduced according to the model of network security architecture from osi. finally some primary cryptographic techniques are discussed based on symmetric encryption, asymmetric encryption and advanced encryption standard published years ago

    本文研究了利用藍牙技術提供各種安全服務和實現的課題，並通過一些具體實現的實例進行闡述，具體安排如下：在第一部分，本文首先回顧了藍牙技術及發展情況，主要包括藍牙發展簡史、藍牙標準的射頻介面、物理鏈路、干擾情況、網路拓撲結構以及核心協議等；然後介紹了通信安全的基礎知識，討論了osi系統中的四層網路安全結構模型；最後給出了各種加密技術的基本理論，包括對稱加密體制如des和blowfish 、非對稱加密體制（ rsa公鑰演算法、數字簽名和身份證明等）以及新一代的高級加密標準（ advancedencryptionstandard ， aes ）等。
  13. Road vehicles - interchange of digital information on electrical connections between towing and towed vehicles - part 1 : physical layer and data - link layer

    道路車輛.牽引和被牽引車輛之間電氣連接的數字信息的交換.第1部分:物理層和數據鏈接層
  14. Protection of telecommunications links from physical stress and radiation effects and associated requirements for dc power systems

    物理壓力和輻射效應的電信鏈路保護裝置及直流電力系統的相關要求
  15. The scheme of the physical layer of the ale protocol was designed according to the hf channel characters and the capability of the current dsp system

    文中針對所要求的通道條件和現有dsp系統的情況提出了鏈路自動建立協議物理層的設計方案。
  16. In order to clear up these causes, i proposes vendor centrally managed inventory mode and design operational steps to implement this mode, including business structure reorganizing and functional department integrating ; constituting strategic partnership with core vendor ; information system ' s building ; combining of the third part logistic and self - support logistic ; distribution network redesigning. finally, this article establishes a mathematic optimal model to find out the number and locations of inventory transferring centers

    針對這些問題，論文提出了供應商集中管理庫存的模型，並且對神龍公司實行供應鏈管理庫存進行了模式設計，包括組織結構重組，職能部門集成；與核心分銷商建立戰略夥伴關系；信息系統建設；第三方物流與自營物流相結合的配送體系；整車物流網路的再設計。
  17. We studied many methods to improve the tcp / ip in wireless environment, such as tcp / ip initial slow start algorithm, initial window and retransmission time out ( rto ) estimate. finally, we consider the round - trip time ( rtt ) with the physical layer and the transfer layer combined together. physical layer using rtt related to the channel state and transfer layer using the constant rtt, the interference between the two layers can be eliminated, and so the effectiveness of the wireless data link can be enhanced

    研究了tcp ip的慢速啟動演算法、初始窗口、重傳超時估計以及改善無線tcp ip性能的各種方法，提出了一種把物理層鏈路和傳輸層相結合處理往返時間（ rtt ）的方法：物理層鏈路採用與通道相關的動態rtt ，傳輸層採用常數rtt ，消除了兩層rtt之間的相互干擾，從而提高了無線鏈路的利用率。
  18. Telecommunications - description of above - baseline physical threats to telecommunications links

    電信.基線上對電信鏈路的物理性威脅的描述
  19. Although frame relay lessens the overhead of link retransmission, frame relay still requires that the voice traffic cross many physical paths

    雖然幀中繼減少了鏈路重發傳輸的開銷，但幀中繼仍需要話音通信穿過多個物理通道。
  20. Common data interfaces used in radio include rs - 232, etc. as the rapid growth of data speed in data radio, asynchronous serial port does not meet the need of data transmission of high - speed data radio. data radio is gradually using ethernet interface as high - speed data radio ’ s data interface, to function as a high - speed data channel between host computer and data radio. this paper brings forward a universal radio interface protocol model, whose core is taking ethernet as a high speed data channel in network protocol stack

    本文針對電臺的以太網介面，經過對各種電臺的功能分析，提出了一種通用的在以太網通信中適用的報文介面協議模型，其核心思想是將以太網作為網路協議棧中內部的高速數據傳輸通道來使用，作為鏈路層和物理層之間的內部介面，同時提供電臺控制和數據傳輸兩大功能模塊。
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