擁塞度 的英文怎麼說

中文拼音 [yōngsèdù]
擁塞度 英文
degree of congestion
  • 擁 : 動詞1 （抱） hold in one s arms; embrace; hug 2 （圍著） gather around 3 （擠著走） crowd; throng...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 擁塞 : jam; congest
  1. Because of the unique issues in the networks, including mobility - induced disconnection, network partition, high out - of - order delivery ratios and channel errors, the congestion control and the error recovery in the network is challenging. in this environment, the interaction between tcp and mac layer protocols, the affection of route protocols on the performance of tcp and the particular congestion control and error recovery mechanism are first discussed. then a particular transport layer protocol scheme based on the non - feedback mechanism is presented, with emphasis on the analysis and simulation of the key parameter

    文中主要討論了兩種不同網路結構中的無線tcp協議改進方案，其一在最後一跳為無線鏈路的網路環境中，針對基本tcp擁塞控制機制存在的缺陷，文中在現有解決方案的基礎上提出一綜合性的方案，其中包括無線鏈路的高誤碼率和連接斷開問題的解決，並重點對方案中出現的交叉層問題進行分析和模擬；其二，考慮的是分散式網路（ adhoc ） ，在文中較為詳細的分析了tcp和mac層機制間的相互作用、路由協議中造成tcp性能降低的因素、 adhoc網路中應採取的特殊擁塞控制和差錯恢復機制，在此基礎上提出了一種採用非反饋機制的解決方案，重點對方案中的關鍵參數進行分析和模擬，分析和模擬結果表明此機制可在很大程度上提高adhoc網路中tcp的性能。
  2. The success of internet owes to the effective congestion control

    很大程度上internet的發展成功是其擁塞控制的有效執行。
  3. The dijkstra algorithm of the least of hops is used for path calculated in olsr. but the protocol only tries its best to transmit data, not considering the state of wireless link

    它採用dijkstra演算法計算跳數最短路徑，並盡力而為地傳送數據包，沒有考慮無線鏈路時延、帶寬等狀態和節點擁塞程度，這樣的路徑計算方式已經不能滿足用戶對網路提供服務質量的要求。
  4. However, with many burst traffic simultaneously arriving at a node, the queue length may become larger and buffer overflow in a moment, or high - speed link is emerged into slower one, there will be in congestion

    然而，當多個突發業務同時到達一個節點時，緩存隊列長度迅速增加，在極短的時間內出現緩沖溢出，或高速鏈路接入慢速網路中引起輸入鏈路速率大於輸出鏈路速率，則導致網路擁塞。
  5. ( 2 ) with the increasing applications of real - time multimedia on internet, an ecn - based tcp - friendly congestion control ( etcc ) scheme was proposed. the scheme emphasizes on the improvement of end host with the support of extended router. red was adopted in the router, and early congestion state was notified to the sender using ecn

    （ 2 ）針對internet上與日俱增的實時多媒體應用，提出了一種基於ecn的tcp友好擁塞控制機制etcc ，該機制側重於端系統功能的改進，同時擴展了路由器的功能來支持端系統的工作，在路由器中採用red管理隊列長度，以ecn的方式將網路的早期擁塞狀況通知端主機，端系統根據相應的速率調節機制來調節數據的發送速率。
  6. When the traffic load becomes heavy mred increases the value of maxp, and on the other hand when the traffic load becomes light mred decreases the value of maxp, and therefore mred can effectively adjust the congestion notification sending rate and stabilize the queue size. the differentiated services architecture, proposed by the ietf diffserv working group has recently become the preferred service model for addressing qos issues in ip networks because of its simplicity and scalability

    當tcp連接數很大也就是擁塞程度嚴重時需要採用激進的方法，也即增大max _ p的值；當tcp連接數較小也就是擁塞程度較輕時需要採用保守的方法，也即減小max _ p的值；從而及時調整向源端發送擁塞通知的速率，維持隊列長度的穩定，避免不必要的傳輸延時和抖動。
  7. The existing methods for rtt - aware conditioner work well when the congestion level is low. otherwise, they often over - protect the flows with long rtt and starve short rtt flows

    但是當網路擁塞程度較重時，由於對rtt較大流的過分保護而導致rtt較小流饑餓。
  8. The multipath olsr protocol will calculate all of possible paths from the source node to destination node. then, it should select one of paths with less congestion nodes for the second path. the paper has designed an effective algorithm of load assigned, to avoid overwhelming some central nodes in the network

    多路徑將選擇一條擁塞程度更輕的路徑作為備用路徑，這樣可以減輕中間部分擁塞節點的處理負擔，將網路負載分配到全網所有節點，即達到負載均衡的效果;二是為了提供qos業務而改進的olsr約束路由協議。
  9. The aimd has got a widely apply for its briefness and ease. at the other hand, it contain limited information because it has only two status : overload or under load. it cannot represent the true demand of the receiver and at the same time the policies of window adjust destroy the demand of smoothness of load, so it cannot afford the request of real - time streaming media

    Aimd從演算法的簡單性和實際網路容易實現的角度考慮，反饋給發送方的信息有限，只有過載或欠載兩種二進制狀態； aimd演算法根據瓶頸資源的擁塞狀態向所有用戶發送相同的反饋信號，並不能真實反映接收節點對發送方負載量的要求;同時， aimd的窗口調整策略破壞了負載平滑性的要求，不能滿足當前實時流媒體應用， aimd的這些不足，體現了一種性能和系統復雜度之間的折衷。
  10. With regard to the flow regulation of the best - effort traffic, the controllable traffic in high speed computer communication networks, the present paper proposes a novel control theoretic approach that designs a proportional - integrative ( pi ) controller based on multi - rate sampling for congestion controlling. based on the traffic model of a single node and on system stability criterion, it is shown that this pi controller can regulate the source rate on the basis of the knowledge of buffer occupancy of the destination node in such a manner that the congestion - controlled network is asymptotically stable without oscillation in terms of the buffer occupancy of the destionation node ; and the steady value of queue length is consistent with the specified threshold value

    本文從控制理論的角度出發，針對計算機高速網際網路中最大服務交通流即能控交通流的調節問題提出了一種基於多速率采樣的具有比例積分（ pi ）控制器結構的擁塞控制理論和方法，在單個節點的交通流的模型基礎上，運用控制理論中的系統穩定性分析方法，討論如何利用信終端節點緩沖佔有量的比例加積分的反饋形式來調節信源節點的能控交通流的輸入速率，從而使被控網路節點的緩沖佔有量趨于穩定;同時使被控網路節點的穩定隊列長度逼近指定的門限值。
  11. However, the resulting average queue length is quite sensitive to the level of congestion and to the parameter settings of red

    然而這種演算法使得平均隊列長度對于網路的擁塞水平以及red參數設置非常敏感。
  12. It is found ecn could n ' t solve the problem that the sender responds to congestion slowly, and the average queue length of router is sensitive to the static parameters of ecn. in chapter four we propose an algorithm called fecn, which provides congestion control and indication messages in router, so that the sender could response to congestion in good time. this algorithm can also adjust the max drop probability according to the active conne

    Ik的特性，而且平均隊列長度和網路吞吐量對ecn的靜態參數較為敏感，因此本文在第4章中提出了一種fecn演算法，該演算法在路山器處提供擁塞控制和指示機制，使源端能夠快速響應路由器發回的擁塞指示消息，調整發送速率，避兔擁塞的發生，該演算法還可以通過估計鏈路中的活動連接數動態調整最大丟棄概率。
  13. This approach has made full use of the fine granularity character of fgs coding and reduces the complexity of the traditional congestion control scheme. in the sixth part, the paper has surveyed the error control schemes in video transmission

    這一做法充分利用了精細分層編碼的精細粒度特性，與其它基於網路節點的組播擁塞控制演算法相比，避免了網路節點間的復雜通信協議。
  14. We discuss structure of the end - to - end congestion control schemes with active queue management ( aqm ) in ip network from the control theoretic point of view. and propose a fuzzy logic based aqm which can improve the robustness of the control algorithms. give out the detailed simulations

    本文從擁塞控制的角度出發，強調路由器隊列管理在系統控制中的地位，並從閉環控制的角度出發，描述擁塞控制的結構，研究主動隊列的控制系統模型，設計了一種用於主動隊列管理（ aqm ）的模糊控制器，模擬證明了這種aqm演算法的有效性。
  15. You may also be accessing our site from a location that has a slow connection to the internet. since neither of these problems are in your control or our control to fix, we can only suggest you be patient and try to listen again at another time

    答：若同時有太多的人上同一網站就會有線路擁塞的情形，或者您所藉以連上我們的網站之線路速度比較慢。這些情形並非您所能掌握的，請您耐心等待，或是另外找時間再為嘗試。
  16. 16 hanbali a a, altman e, nain p. a survey of tcp over mobile ad hoc networks. available at http : www. inria. fr rrrt rr - 5182. html, may 2004. 17 jain s, lv y, das s r. exploiting path diversity in the link layer in wireless ad hoc networks

    我們指出，這些非擁塞因素包括易損耗的無線通道mac層中的過度競爭和不公平接入節點移動脆弱的路由協議不適合的擁塞窗口不對稱路徑。
  17. When congestion occurs, red randomly select sources to notify congestion before queue overflow and once tcp sources receive the notification it will reduce the congestion window to decrease the packet sending rate, and therefore, mitigate the network congestion

    Red的基本思想是路由器通過監控隊列的平均長度來探測擁塞。一旦發現擁塞逼近，就隨機地選擇源端來通知擁塞，使他們在隊列溢出導致丟包之前減小擁塞窗口，降低發送數據速度。
  18. This scheme can avoid the emergency of orphan effectively, and gives a good solution when the node isn ’ t available. the protocol we design is named as soptt, which is shorted as “ self - organize protocol of tree topology ”. the layer of application we design can gather and send data, realize the function of data fusion to avoid the potential communication congestion so that the communication will be more effectively

    該協議解決了節點路由的建立和重建，還可以根據節點剩餘電能的情況智能選擇簇首節點，並且有效地避免了孤兒節點的產生，對于節點失效的情況也能夠很好處理;在應用層，基於智能樓宇溫度監測應用環境，設計並實現了採集發送數據的程序，使得採集、發送數據的頻率符合應用需要，並且提出了數據融合的思想，以避免可能發生的通信擁塞，同時也達到了通信的高效性。
  19. This thesis analyzes the differentiated service architecture and studies its control mechanisms of realizing ip qos, including packet marking policy, queue scheduling algorithm and packet dropping mechanism etc. after that a diffserv simulation platform is built using the improved diffserv model in ns2 ( network simulation 2 ) developed by u. c. berkeley and simulations have been done on it, which shows that the platform, can service different traffic flows and provide a better solution for realizing point - to - point ip qos. this thesis studies the control mechanisms of realizing ip qos in diffserv and does research work as below : firstly, this thesis studies the packet marking policies

    本文通過分析區分服務（ diffserv ）模型的體系結構，研究其實現ipqos的各種控制策略，包括分組標記策略、隊列調度演算法及擁塞時的分組丟棄機制等，利用加州大學伯克萊分校的ns2作為模擬工具，對其已有的區分服務模塊進行了改進和完善，搭建了區分服務模擬實驗平臺，並在該平臺上進行模擬測試，實現了對具有不同qos請求的業務流的區分服務，為實現端到端的ipqos提供了更好的解決方案。
  20. Another disadvantage for sra algorithm is that it cannot avoid the instance that some traffic classes may be jammed abruptly, but other traffic classes have free resources. the thesis presents an algorithm, called peb _ esra ( pre - estimation and borrow based esra algorithm ), which permits borrowing resources among traffic classes. to some extent, it solves the short - term unbalance of resources allocation

    針對sra演算法無法解決可能出現的某業務類突發性擁塞，而其他業務類尚有空閑資源的情況，論文在繼承peesra演算法的基礎上，提出允許業務類之間資源借用的pebesra （ pre - estimationandborrowbasedesraalgorithm ）演算法，該演算法在一定程度上緩解了由於業務流突發性擁塞造成的資源配置短期失衡問題。
分享友人
分享到 Line

分享到臉書