physical control layer 中文意思是什麼

physical control layer 解釋
實體控制層
  • physical : adj 1 物質的，有形的，形而下的 （opp psychical spiritual mental moral）; 確鑿的；外界的。2 身體的...
  • control : n 1 支配，管理，管制，統制，控制；監督。2 抑制（力）；壓制，節制，拘束；【農業】防治。3 檢查；核...
  • layer : n 1 放置者，鋪設者，計劃者。2 【賽馬】（一般）賭客。3 產卵的雞。4 【軍事】瞄準手。5 層；階層；地...
  1. 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。
  2. Electricity metering - data exchange for meter reading, tariff and load control - part 42 : physical layer services and procedures for connection - oriented asynchronous data exchange

    電量計.抄表電費和負荷控制的數據交換.第42部分:面向連接的異步數據交換用物理層使用和程序
  3. Secondly, based on the function requirement of usb device controller the system was divided into five modules, clock extracting, event detect, physical layer interface, media access controller, endpoint control layer and every module was designed in detail

    其次，針對usb設備控制器的功能要求，將系統分為時鐘提取、事件檢測、物理層、介質訪問層、端點控制層五個模塊並對每個模塊進行了詳細設計。
  4. 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） 。
  5. Mac 5ghz supplement to standard for information technology - telecommunications and information exchange between systems - local and metropolitan area networks - specific requirements - part 11 : wireless lan medium access control and physical layer specifications : high speed physical layer in the 5 ghz band

    信息技術補充標準.系統間電信和信息交換.局域網和城域網.特殊要求.第11部分:無線lan媒體訪問控制
  6. Mac : 2. 4ghz supplement to standard for information technology - telecommunications and information exchange between systems - local and metropolitan area networks - specific requirements - part 11 : wireless lan medium access control and physical layer specifications : higher speed physical layer extension in the 2. 4 ghz band

    信息技術補充標準.系統間電信和信息交換.局域網和城域網.特殊要求.第11部分:無線局域網媒體存取控制
  7. Electricity metering - data exchange for meter reading, tariff and load control - physical layer services and procedures for connection - oriented asynchronous data exchange

    電量測量.表讀數計費和負載控制的數據交換.定向連接異步數據交換的物理層工作和程序
  8. In wireless network data link layer is built on the physical layer, and it consists of two part : mac layer and llc ( logic link control ) layer

    在此基礎上進行了無線收發電路的設計和調試。數據鏈路層建立在無線通道之上，包括mac層和llc層。
  9. Tractors and machinery for agriculture and forestry - serial control and communications data network - part 2 : physical layer

    農業和林業用拖拉機和機械.系列控制和通信數據網.第2部分:物理層
  10. In this paper we analyzed the structure, function and characteristics of the private office network, discussed the primary threats to the office network security and common attack methods, based on the p2dr model, we distributed the office network security policy across three layers : network layer, system layer and application layer. the security principle, implement solution and the relationship among these three layers were illustrated in this paper, including physical access control, logical access control, vpn, data encryption, authentication, authorization, audit, ids ( intrusion detection systems ), system leak test and anti - virus protection

    本文中將辦公網路的安全策略由下至上劃分為網路層、系統層和應用層三個層次，分別敘述了各個層次上的安全原則和實現方式，以及各層之間的相互關系，詳細介紹了物理控制、邏輯控制、 vpn與數據加密、用戶認證和授權、審計與入侵檢測、漏洞掃描及病毒防護等方面的策略和實現方式。
  11. We firstly study some aspects, such as the modulation ( ofdm ) in the physical layer and the media access control ( mac ) protocols, combining reliable data transmission with high - throughput access methods and real - time, quality - of - service ( qos ) features. some problems exist in tcp applications over plc, because the high bit error rate makes it difficult to estimate the round trip time ( rtt ) and causes unnecessary retransmission

    通過對現有的兩種產品（ homeplug和inari ）的mac協議：類似無線通訊csma ca協議（以競爭為基礎）和集中式的令牌環（ ctp ）協議（避免競爭）的媒質接入控制的原理進行分析和計算，對兩個協議進行了性能評價及分析了它們對qos的支持。
  12. In this paper, to resolve the coupling phenomena between temperature and humidity in wood drying system, a bp neural network based pid controller is proposed and applied to wood drying system. the architecture and learning algorithm of the proposed controller is more simpler and the physical meanings of the input layer ' s neurons and output layer ' s neurons are explicit. based on predefined control rules and self - learning, the bp network changs the scaling integral and differential parameters, therefore is able to control the variants using classical pid control algorithms and at the same time, decoupling control is implemented as well during the control procedure

    本文針對木材幹燥過程中溫、濕度耦合的現象，提出一種將新的基於bp神經網路的pid控制器應用於木材幹燥控制系統的方案，其結構和學習演算法相對簡單，輸入層和輸出層神經元物理意義明確；它根據設定的某一控制規律，通過網路的自學習，調整pid控制器的比例、積分和微分參數，從而利用經典的pid控制演算法得到相應各變量的控制量參與控制，並在該過程中實現解耦控制，而不用給定樣本信號進行在線的學習。
  13. Wpan standard for telecommunications and information exchange between systems - lan man specific requirements - part 15. 3 : wireless medium access control and physical layer specifications for high rate wireless personal area networks

    系統間遠程通信和信息交換標準.局域網和城域網特殊要求.第15 . 3部分:高速無線個人網路
  14. After analyzing the urban traffic control system ' s development tendency of integration and intelligentization, this paper researched on the basic principle, prototype system and the system architecture of the new iutcs, and analyzed the physical architecture and logical architecture which consist of three layers : central network control layer, area network control layer and intersection control layer

    介紹了目前城市交通控制系統的發展趨勢集成化和智能化，在此基礎上研究了所開發的集成化城市交通控制系統的開發原理、系統原型和系統結構（包括系統物理結構及邏輯結構） 。
  15. In view of geological and hydro - geological situations of the south anchor runyang yangtze river highway bridge, the paper bring forward mathematical model and calculation method of double deck structure groundwater, which can be used to lively calculate every layer ' s water table, so that we can realize every layer ' s settlement calculation and control ; establish the inter relationship between non - linear physical - mechanics parameter and hydro - geological parameter, objectively describe the non - linear change process of the porosity, hydraulic conductivity, specific storativity in the process of soil dewater and concretion

    針對潤揚長江公路大橋南錨場地地質、水文地質條件提出了雙層結構地下水運動的數學模型和計算方法，該方法可以實時計算出各分層的地下水位，實現了各分層沉降計算與控制研究；建立了土層非線性物理力學參數與水文地質參數之間的內在聯系，客觀地描述土層降水? ?固結過程中孔隙度、滲透系數和貯水率等參數非線性變化過程。
  16. Mac : amendment to standard for information technology - telecommunications and information exchange between systems - local and metropolitan area networks - specific requirements - part 11 : wireless lan medium access control and physical layer specifications : medium access control security enhancements

    對信息技術標準的修改.系統間的遠程通信和信息交換.局域網和城域網.特定要求.第11部分:無線局域網媒體訪問控制
  17. Mac : 4. 9 ghz - 5 ghz amendment to standard for information technology - telecommunications and information exchange between systems - local and metropolitan networks - specific requirements - part 11 : wireless lan medium access control and physical layer specifications : 4. 9 ghz - 5 ghz operation in japan

    對信息技術標準的修改.系統間的遠程通信和信息交換.局域網和城域網.特定要求.第11部分:無線局域網媒體訪問控制
  18. On the other hand, recent advances in communication and modulation methodologice, as well as in adaptive digital signal processing and error detection and correction, have opened the way for the development of effective medium access control and physical layer protocols that support power line communications ( plc ) networks operating at speeds comparable to those obtained from specially wired and more recent wireless local area network in mid - 2001, an industrial standards organization called the homeplug powerline alliance, originally founded by 13 companies including cisco, motorola, intel, panasonic, and texas instruments, announced the completion of the homeplugl. o specification for a l. 0mb / s class in - home power line networking technology based on orthogonal frequency - division multiplexing ( ofdm )

    但是，近年來通信和調制技術的發展，特別是自適應數字信號處理和錯誤檢測及糾正技術，使電力線通信技術出現新的mac層和物理層協議，其性能可以和一些專用有線網路以及最近十年流行的無線局域網技術想媲美。在2001年，一個由13個公司（包括cisco ， motorola ， intel ， panasonic ， andtexasinstruments ）組成的組成的標準組織? ? homeplugpowerline聯盟，頒布了完整的homeplug1 . 0規范，改規范使基於正交頻分復用技術，主要針對10mb s室內電力線網路技術。
  19. Routing and wavelength assignment ( rwa ) algorithm is the key problem of mplms control layer. a dynamic routing and wavelength assignment ( rwa ) algorithm with the design pr otection is proposed, with load balance and capacity constraint of physical links taken into account

    路由和波長分配（ rwa ）是mplms控制層面的一個重要問題，本文基於考慮鏈路負載均衡和容量限制提出了一種具有保護設計的動態路由和波長分配演算法。
  20. Essentially, this new architecture added intelligence at the medium access control ( mac ) layer 2 and at the physical ( phy ) layer 1, fostering cooperation between the two layers in performing the critical tasks involved with initiating and maintaining wireless communications

    本質上，這種新的體系結構在介質接入控制（ mac ）層（第二層）和物理層（第一層）增加了智能，建立這兩層之間在執行涉及開始和保持無線通信的關鍵任務時的協作關系。
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