自由通信網 的英文怎麼說
中文拼音 [zìyóutōngxìnwǎng]
自由通信網
英文
free net-
It mainly focuses on the development of optical fiber communication and maintenance of the optical fiber line operation resulting from the expansion of network. it also changes from the positive method of maintenance to an automatic, real - time alarming and optical fiber automatic reversion system. finally the system can supervise the power of local optical fiber cable network and provide information ( including geographic information ) for the equipment management in local computer center
它主要解決由於光通信的發展，網路規模的擴大所帶來的光纜線路的運行維護問題，並且把以前的被動維護方式過渡到自動、實時告警（報警）和光路自動倒換的模式上，同時系統提供了本地網光纜的光功率監控和本地機房設備管理信息（包括地理信息）功能。We study the design of routing algorithm. after analyzing the characteristics of message routing in the interconnection network, one new concept " the best network for routing " ( bnr ) is proposed. base on it, we present the framework for designing high performance minimal deadlock - free fully adaptive routing algorithms
基於「最佳尋徑網」框架，以低通信延遲、高通信帶寬和易vlsi實現為目標，設計了自適應性強、可擴展性好、性能優越的bbfam （ bnr - basedfully - adaptivealgorithmonmesh ）完全自適應路由演算法。In the meanwhile, we build a complete simulation model of layered wireless self - organizing routing network and verify feasibility of network architecture and key technologies, including operating mode of wireless interface, addressing and routing in lwsrn we study the performance of wsrn in terms of routing overhead, packet delivery ratio, and the communication capability, and compare these result with that of ad hoc network
同時，構造了完整的分層結構的無線自組織路由網路模擬模型。驗證了網路體系結構和關鍵技術的可行性，包括無線通道工作方式、網路編址技術、網路路由過程。並通過模擬分析了分層結構的無線自組織路由網路的路由負載、網路數據到達率和網路通信容量。Providing an extremely flexible method for establishing communications, the mobile self - organizing network has potential applications in both military and commercial communications. based on the gsm wireless communication system and the ad hoc network, there are two level hierarchies in the mobile self - organizing network : wireless routers and wireless hosts. wireless routers perform the function of constructing routes, forwarding data, and locating mobile hosts
結合蜂窩式無線移動通信系統和adhoc網路的特點，本文設計了具有兩級網路結構的無線移動自組織網路系統，使用專門的無線設備? ? 「無線路由器」構成具有用戶無線接入、無線組網和路由功能的無線互連網路，為移動用戶提供無線接入、路由和中繼服務。It must be appreciated and accepted in telecom market, due to its advanced technology reliable performance and high cost performance. a series of technical key problems have been solved, mainly f an overal exhaustive design of the 128k switching network system was presented based on 4k net - chips, with our own intellectual property a 3 level 64k switching net was successfully designed, in which the tlevel consists of l6 4k net - chips and the s - level consists of a self designed single vlsi fpga chip with 560 pins. an optical net interface and an optical multiplexer were designed to carry out the voice transmission and distribution of l28, 000 users
在研究開發過程中，解決了一系列的技術關鍵問題，主要有：提出了基於有自主知識產權的4k網片的128k網路系統的總體設計方案；研究設計了tst三級結構64k交換網，其中t級含有16片4k網片， s級由自行設計的、 560pins的、單片大規模fpga實現；研究設計了雙機雙網雙余度的通信控制處理器系統，實現了對用戶呼叫、 tst各級網路的控制、報警等各種功能；研究設計了光網介面oni和光復用器omux ，實現了12 . 8萬用戶話音的傳輸分配。Due to its simple structure, pioneer - net switch only needs to automatically identify " pioneer control token " and " channel cancel token ", used to establish and cancel channel
先鋒尋徑式交換機的構造簡單，它只需自動識別由先鋒網卡所發出的用於建立通道的「先鋒信令」和撤消通道信令。First, it gives a snapshot of some typical self - organized routing protocols in manet. then the design of self - organized routing algorithm based on ktrp is elaborated as the main part of this dissertation, including the choosing of key nodes, the main algorithm modification of ktrp to accommodate with the interior routing in subnet, the access flow between two layers, primary packet formats, tables, and ip routing algorithm. at last, the simulation model of the self - organized routing algorithm
本文首先分析了現有的manet自組織路由協議;然後針對本信息傳輸分系統的網路結構，詳細分析了基於ktrp的子網內部以及相鄰層間的自組織路由演算法的設計，包括對多個關鍵節點的選取、為適應本課題子網內路由通信而對ktrp做出的主要演算法更改、相鄰層間接入互連的流程、自組織路由演算法中涉及的主要報文格式和表，並且舉例說明了ip選路演算法;最後對所設計的自組織路由演算法進行了模擬，以驗證演算法的有效性。The system is embedded software, working on the wdpf ii control system of westinghouse corp. of usa and communicating to the control system real time, calling the global database, using some tools of wdpf system. in order to improve ocs working efficiency, we have to research the wdpf control system constructions, network structure, data type, database structure, communication mode, system tools applying and so on. so ocs uses the wdpf ii resource as possible as it can in developing program
由於本系統為典型的嵌入式軟體，工作在西屋公司wdpf控制系統之上，並與控制系統實時保持通信，隨時訪問系統的全局數據庫，同時訪問利用該系統的各種工具軟體，所以在軟體設計前對wdpf自動化控制系統的系統組成、網路結構、數據類型、數據庫結構、通信方式、系統軟體應用等方面都作了非常仔細的研究並在系統編制時對數據及設備資源作了最大的利用。With the rapid development of wireless communication technology and computer technology ， people wish to get reliable data communication service any time and any where. traditional network can not supply communication service if the whole network need to move because the network devices are fixed by wires and can not move. so, ad hoc network comes. it can provide mobile data communication service compared with traditional network. ad hoc is a network with plat structure and all the nodes is equal. all the nodes need provide relay. but not all the nodes will provide relay and the performance of plat structure is poor in large scale. so the wireless mobile self - organized network adopts a two - level structure by referencing the cell mobile communication system. wmsn uses wireless routers to construct network. it can provide wireless access, relay services to users
考慮到不是所有的站點都願意提供中繼服務及平面結構的局限性（在網路規模較大時性能會很差） ，本課題的無線移動自組織網路參考了蜂窩移動通信系統的特點，是一種具有兩級結構的網路。使用專門的無線設備? ? 「無線路由器」構成具有用戶無線接入、無線組網和路由功能的無線互連網路，為移動用戶提供無線接入、路由和中繼服務。 ieee802 . 11b可以提供很高的通信速率，可以提供很好的接入性能，並且支持ieee802 . 11b協議的設備正成普及的態勢，因此成為我們所選擇的鏈路層協議。Discussing the network - control function of inverters with two kinds of methods : one is computers control inverters basing on the self - definition protocol through rs485 serial port ; the other is connecting the inverter which is controlled by the master to the fieldbus network through interfaces
對于交流變頻調速器的網路控制功能討論了兩種方式：一種是用上位機通過rs485的串列通信以自定義協議控制交流變頻調速器；另一種是用總線通信適配器將交流變頻調速器掛接在現場總線網路中由主站進行控制。The current communication network in the world consists of many private networks and public switching networks. these private networks are connected by switching networks and separately managed. some private networks have built management system, but some have n ' t
當今世界上現有的通信網一般是由許許多多個獨自管理的專用網和多個公用交換網相互聯組成的，有的專用網已經建立起網路管理系統，有的則正在建立之中。The main idea in this paper is to design greenhouse computer distributed auto - control system. the system is a kind of principal and subordinate structure made up of one pc and several microcontrollers, principal can bus communication network and crc validated algorithms to ensure data transmitted correctly. the local operation in greenhouse can be obtained by monitoring environment parameters and warning information can be read into pc
本文的主要設計思想是構建溫室計算機分散式自動控制系統，由一臺pc機與多個微電腦控制裝置組成主從式分佈結構，採用總線式can通信網路和crc校驗的通信演算法進行數據傳輸，通過讀取實時和歷史存儲的環境參數值和報警信息來監測溫室的運行情況。Mobile ad - hoc networks ( manets ) are expected to play an important role in future communication systems. routing has a key role in manets
自組網可望在未來通信系統中發揮重要作用，路由協議是其關鍵技術之一。Manets ( mobile ad - hoc networks ) are temporary infrastructure - less multi - hop wireless networks that consist of many autonomous wireless mobile nodes. besides normal functions, each node should also act as a router. service discovery is the operation of finding proper servers that provide services matching one ’ s request
無線自組網是由多個無線移動節點臨時組成的不依賴任何基礎通信設施的無線多跳對等網，網路中的每一個節點同時具有普通網路節點和路由器的雙重功能。In the manufacture of communication equipment, we shall further raise the proportion of homemade products in the newly added fixed switching devices ( 99 % ) ; we shall lay emphasis on the science research for development of equipment of mobile communication and optical communication equipment and try to raise the proportion of independent intellectual property rights so as to make homemade equipment take the leading position in the domestic market and let the market proportion of newly installed equipment exceed 50 % and 30 % ( for the trunk network ) respectively ; we shall basically let the low - end equipment and border equipment of the data communication network be homemade products, and quicken our steps in nationalization of the core equipment ( the backbone atm switchboard and the high - bit routing device ) on the basis of introduction, digestion and assimilation of foreign advanced technology
對于通信設備製造業，將進一步擴大新增固定交換設備國產化的比例（ 99 % ） ；將重點加強移動通信和光通信設備的科研開發力度，努力擴大自主知識產權的比例，使國產化設備在國內市場中佔主導地位，新增設備市場佔有率分別超過50 %和30 % （骨幹網）以上；基本實現數據通信網路低端設備和邊緣設備國產化，在引進、消化、吸收國外先進技術的基礎上，加快骨幹核心設備（骨幹atm交換機、高比特路由器）的國產化步伐。At last, a test is done by the bpa100 protocol analyzer, then we can find that bluetooth office automation system in nayong power plant guizhou province carrys into the wireless office in the plant, all the devices in the net can communicate with the right routing, and the applications based on the hardware platformform run credibly, the network can improve the level of office automation
通過bpa100協議分析儀的測試，可以看出，本課題設計的貴州省納雍發電廠藍牙辦公自動化系統，實現了發電廠的無線辦公，網路內部的各個設備之間的通信也能進行正確的路由，且基於硬體平臺的應用程序能夠正確可靠的運行，從而大大提高了納雍發電廠的辦公自動化水平。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。The iec 61850 communication networks and system in substations designed by iec tc 57 is a new international standard on substation automation
Iec61850變電站通信網路和系統是由iectc57負責制定的關于變電站自動化的國際標準。It has many benefits due to its ultra - wideband nature which including the following : not sensitive to channel fading, low transmit power, extremely difficult to intercept, low complexity of transceiver structure, fine range resolution ( centimeter scale ) for location and so on this paper combines uwb technology and mobile ad hoc network technology, concerting the lasn project of national key laboratory of communication, researchs the baseband process cell of uwb communication transceivers on the base of arithmetic research and spot test
本文結合uwb技術和移動自組織網（ manet ，即mobileadhocnetwork ）技術，配合通信抗干擾技術國防重點實驗室uwb技術研究項目「 lasnproject 」的工作進展，在演算法研究和現場測試的基礎上，對uwb通信節點樣機的基帶處理單元進行設計研究。樣機結構包含三大模塊:天線、用分立器件形成的射頻電路、由fpga構建的基帶處理單元。The automation of electric power system is developing toward open, standardization and distribution. the problem caused by the disunity of communication protocol in electric system, is becoming standing out more and more. the demand for standardization of the protocol and the desirability of constructing a transparent data environment are more urgent. it has become a common problem that realizing data communication and data sharing in different protocol systems
電力系統自動化正朝著標準化、分散式和開放性的方向發展。在電力系統通信中由於規約不統一而引起的問題顯得日益突出，人們對網路協議標準化的要求和建立透明的數據環境的願望也越來越來迫切。在不同的協議體系中實現數據通信和數據共享成為了一個普遍問題。分享友人