qos quality of service 中文意思是什麼

qos quality of service 解釋
通信服務質量
  • qos : 超時
  • quality : n 1 質，質量；性質，特質；品質，品位。2 優質，美質，優點。3 才能，能力，技能，素養。4 品種。5 身...
  • of : OF ＝Old French 古法語。
  • service : n 塞維斯〈姓氏〉。n 1 服務；工作；公務；職務；事務；業務；行政部門（人員），服務機構（人員）。2 ...
  1. In tranditional ip network, only the “ best effort ” service is provided, but the quality of service can not be guaranteed. though the interserv, deffserv and mpls are presented afterward to guarantee the qos for the ip network. but as a layer network, the realization of the qos function need span different layers ( such as rsvp protocol ) in the ip network, which may result in the function iterance and chaos

    多媒體和實時業務的出現要求網路能夠提供足夠的qos保證，在傳統的ip網路中只能提供「盡量傳輸」的服務而不能保證服務質量，后來提出的綜合服務模型（ interserv ）以及區分服務模型（ deffserv ）以及mpls技術保證了ip網路上的服務質量，但由於ip網路是層次結構的網路，因此對qos的支持需要跨層（如rsvp協議） ，這就可能引起功能的重復和混亂，而微通信元系統是無層次結構的網路系統，就克服了這些的問題，變得簡單，效率更高。
  2. Quality of service ( qos ) - specific performance guarantees for cable modem and other high - speed services

    服務質量-有線電視數據機和其他高速服務的具體性能保證。
  3. Different service has its own traffic characteristics and differentiated quality of service ( qos ) requirement. so it is necessary to study traffic control mechanisms enabling the network to meet various qos constraints defined for different services while achieving high resource utilization, in which connection admission control ( cac ) plays an important role

    由於不同類型的業務具有不同的業務特性和服務質量（ qos ）需求，這就要求atm網路能夠提供相應的機制以便在高效地提高資源利用率的同時確保不同類型業務的qos ，而連接允許控制（ cac ）則是其中一種十分重要的機制。
  4. The current internet only provides the service called best - effort, in which, all traffics are treated indistinguishably and compete for the network resources equally. this service model is insufficient for those applications that have special requirements for bandwidth, delay and delay jitter, and these requirements result in the emergence of concept of quality of service ( qos )

    現有的internet網路基本上只提供「 best - effort 」的服務，在這種服務模型下，所有的數據流（ traffic ）被「一視同仁」 ，公平地競爭網路資源，這對一些對帶寬、延遲、延遲抖動等有特殊要求的應用來說，無疑是不能滿足要求的。
  5. There lacks of efficient queue management. congestion happens here and there between whiles, which causes the dropping of packets or the jitteriness of transport, and even pervades to collapse the network. with the development of internet based business and applications, quality of service ( qos ) is required and internet is expected to support the qos

    但是「盡力而為」服務仍是目前internet中主要的一種服務類別，所有分組在網路中被同等對待，缺少有效的管理，局部的擁塞經常發生，導致網路性能下降、應用的分組丟失和數據抖動，不能保證服務質量（ qos ） 。
  6. Second, it do research on the theory of quality of service, such as intserv and diffserv module, qos protocols, qos array techniques and qos architecture. third, based on the current techniques as j2ee, wfe and xml, an architecture of a pbnm system using ejb and wfe is presented. forth, it is discussed for some key components in pbnm domain, such as qos information module, policy based metwork management framework and the relations among components fifth, it designed the relations and communication interface between pbnms and other oss modules, and elaborated a strategy of building a distributed object information model and discussed its specific implementation, and implement the policy hierarchy using domain

    本文的主要研究工作和成果如下：分析了傳統的網路管理技術和發展歷程，對網路管理的國際標準cmip 、 tmn 、 snmp和cops等及網路管理的功能進行了討論；對服務質量（ qualityofservice ， qos ）中的主要理論，如intserv和diffserv服務模型、 qos協議、 qos隊列技術、 qos體系結構進行了探討；基於當今的流行技術j2ee 、 wfe 、 xml ，提出並設計了以ejb wfe框架構築的策略管理體系結構；討論了基於策略的網路管理（ pbnm ）中的若干關鍵技術問題，如策略信息模型、策略網路的系統構架及組件間的交互關系；設計了基於策略的網路管理系統（ policybasednetworkmanagementsystem ， pbnms ）與運營支撐系統（ operationsupportsystem ， oss ）各模塊間的關系和通信介面，運用分佈對象技術建立網管信息模型，運用域進行策略的等級管理；討論了策略服務器（ pdp ）和策略實施點（ pep ）的工作流程，採用關系數據庫進行策略的存儲，設計並實現了策略數據庫、策略服務器（ pdp ） 。
  7. The concern problem is how to guarantee the qos ( quality of service ) of the high priority traffic while to reduce the delay of data traffic

    如何在保證高優先級業務的qos （ qualityofservice ）同時，減小數據業務的時延成為衛星網路資源調度所關注的問題。
  8. Because mpeg video need more storage space ( though achievements in compression algorithms have decrease it to a reasonable degree ), high transmission bandwidth, low transmission delay and delay jitter ( especially to real - time video ). how to guarantee video transmission qos ( quality of service )

    如何在寬帶ip和atm網路上有效地傳輸mpeg視頻，才能有效地保證視頻傳輸的服務質量參數qos （如延遲、延遲變化等） ，以及用戶終端表示的表現質量參數qop ，一直是近年來學術界研究的熱點。
  9. Simulations results under rayleigh fading channel and on / off traffic model show that asama protocol can effectively support the application of smart antennas and provides high channel utilization and low delay. in chapter 5, we propose a qos ( quality - of - service ) - supported adaptive slot allocation multiple access ( qasama ) protocol

    在考慮多波束智能天線，及話音與數據業務特點的基礎上，提出了提供qos保障的自適應時隙分配多址接入協議（ qasama 、 。
  10. Although the congestion control research of host - ends has made great strides, the current queue management mechanism in router is not able to provide end - to - end congestion control mechanism to sustain the above environment, namely, the unfairness of assigned bandwidth or drop - rate for different types of flows and the synchronization of all tcp flows in network. so it is necessary to improve the classical queue management mecnanism such as drop _ tail and red in order to boost the qos ( quality of service ). this article analyzes the main traits of host - ends congestion control and all kinds of fashionable queue management machanism, which include queue mechanism with absolute priority, weighted fair queue mechanism and class - based queue mechanism

    本文分析了主機端的擁塞控制機制和網路中路由器的現有各種隊列管理機制：絕對優先級隊列機制、加權公平隊列（ weightedfairqueue ） [ 1 ]機制、基於類的隊列（ class - basedqueue ） [ 2 ]機制以及red （ randomearlydetection ） [ 3 ]機制的主要特點，並重點針對ietf （ internetengineeringtaskforce ）推薦的把red演算法與明確的擁塞通告ecn （ explicitcongestionnotification ） [ 4 ]結合的方法進行了分析，發現隨著internet流量的日益遞增， red機制的依賴平均隊列長度來管理擁塞控制的演算法並不能有效地阻止包丟失：與drop - tail相比， red確實消除了對陣發流量（ tcp ）的偏見，但是增加了平滑流量（ udp ）的丟包概率。
  11. The former one is related to the transmission of the atm cell and to offer the perfection qos ( quality of service ) ; the latter is related to the transmission of the length - variable ip data pack

    前者側重於atm信元的傳輸，提供了完善的qos支持；後者側重於變長ip數據包的傳輸，在docsisv1 . 1中提出了qos的概念。
  12. This paper proposes an end - to - end utilization control architecture and an ic - eat integration control for end - to - end aperiodic tasks algorithm, which features a distributed feedback loop that dynamically enforces the desired utilization bound on multiple processors. ic - eat integrates admission control with feedback control, which is able to dynamically determine the qos quality of service of incoming tasks and guarantee the end - to - end deadlines of admitted tasks

    在這樣的系統中，每一個任務由多個子任務組成，子任務之間有著前驅后繼關系，形成一個執行鏈chain ，並分階段依次運行於不同的cpu上，比如：一個監控任務需要經過以下3個子任務的處理：傳感器采樣數據傳輸本地數據顯示，而每個子任務分別運行在不同處理機上。
  13. Qos quality of service

    Qos服務質量
  14. Offers such standard features as qos quality of service technology including proprietary adaptive rate control and real - time auto repeat request

    像sony其他會議系統一樣， pcs - tl50提供諸如包括專有的適應率控制arc和即時汽車重復要求arq的qos服務的品質技術這樣標準的特性。
  15. Ensure a tighter coupling between the business processes and the delivered it services, as well as the expected qos quality of service, by streamlining the end - to - end communication process

    通過簡化端到端的通信流程，確保業務流程和交付的it服務之間具有更強的耦合性以及期望的服務質量quality of service ， qos 。
  16. Chapter 1 introduces the important role of mobile communication in communication field, and points out the significance for promoting the research work of guaranteeing qos ( quality of service ) using modern radio resource management techniques with limited bandwidth

    第一章介紹了移動通信在通信領域的重要位置及其發展過程，以及移動通信中無線資源管理涉及的各項技術在有限帶寬條件下為盡可能多的用戶提供業務質量保障的重要意義。
  17. Multimedia synchronization is a special and important qos ( quality of service ) in multimedia systems. as a key technology in multimedia communications, research on multimedia synchronization has received a wide range of attention in the recent years

    媒體同步是多媒體通信中一個特殊的也是極為重要的qos （服務質量） ，作為多媒體通信中的一項關鍵技術，多媒體同步已經引起了學術界的廣泛關注。
  18. We divide traffic into two kinds : real - time and non - real - time, and present a new packet scheduling algorithm. the simulation results show that this algorithm not only provide different qos ( quality of service ) guarantees for real - time traffic ( voice ) and non - real - time traffic ( data ), but also can assign bandwidth fairly in long term

    我們提出一種符合統計時分復用（ stdm ）概念的分組調度演算法，將業務源按實時和非實時分為兩種固定優先級，在優先確保語音業務的實時性的情況下，對非實時業務源動態的分配帶寬，並通過彷真表明該演算法的實用性。
  19. In next mobile communication system to suffice more and more high - speed data service and demand of qos ( quality of service ) many new wireless link layer transport technologies are going to be used such as mimo ( multiple input multiple output ), ofdm ( orthogonal frequency division multiplexing ), channel coding and acm ( adaptive coding modulation ) etc. low density parity check ( ldpc ) codes were first discovered in 1960 ’ s which belong to linear block codes with their parity matrix being sparse

    下一代移動通信系統為了滿足移動用戶對高速、寬帶數據傳輸業務不斷增長和更高服務質量的要求，採用了許多新的無線鏈路傳輸技術，包括多天線發射和接收技術、正交頻分復用技術、通道糾錯編碼技術和自適應編碼調制技術等。上世紀60年代提出的低密度校驗碼，是一種校驗矩陣為稀疏矩陣的線性分組碼。
  20. Multimedia applications transporting the real - time data on internet become more and more at present, but because of the characteristic of multimedia data transport, it is a very difficult to transmit multimedia real - time data on internet which does not offer a qos ( quality of service ) guarantee, and services which tcp / ip suite can offer are far not enough to support this kind of applications now

    當前在internet上傳輸多媒體實時數據的要求及應用越來越多。然而由於多媒體數倨傳輸的特點，要在沒有qos （ qualityofservice ）保證的internet上傳輸多媒體實時數據是非常困難的，而且就現在tcp / ip協議族所提供的服務是遠遠不夠的。
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