access contention 中文意思是什麼

access contention 解釋
接入爭用
  • access : n. 1. 接近；會面。2. 捷徑，門路〈指方法、手段〉；檢查孔；進路，入口；【自動化】（存貯器的）存取。3. （病的）發作；（怒氣等的）爆發。4. 增加。
  • contention : n. 1. 斗爭，競爭，爭論。2. （爭論中的）論點，主張。
  1. A qos - support protocol, m - dcf, and its schedule model are proposed. by providing different contention window for different classes, the higher class frames the higher access probability. the simulation proves that m - dcf has better performance than dcf protocol on system throughput, discard ratio, frame discard ratio of higher classes, average access delay of different classes

    提出了為不同等級幀提供不同競爭窗口的改進型dcf ： m - dcf協議，並給出了m - dcf的調度模型，通過採用不同的競爭窗口，為不同n西安電子科技大學博士學位論文:無線局域網和ip服務質量關鍵技術的研究的應用提供了不同的接入概率，保證了qos ;模擬結果證明了m一dcf在系統吞吐率、丟包率、高等級業務丟包率、不同等級業務的平均接入時延等方面都優于dcf協議。
  2. In this paper, on the basis of previous research works, the ivth system model is studied, and results are compared with the ii th one, and we get expressions for the transfer probability of the customers pij, the mean number of customers in the steady state m, and the mean detained time of the customers in the system w. so far, the theory foundation of the contention - collision elimination access mode has been established for its application

    其中競爭?沖突淘汰存取方式類、類、類、類系統模型的數學建模已經完成。本文就類系統模型進行了數學建模，提出了顧客轉移概率p _ ij 、平穩狀態下系統平均隊長（ ? ） 、顧客平均等待時間w等的算式。
  3. Introduces multi - user access, slot alignment and power control, contention resolution. presents the multi - user access method based on cdma employed in the backward link. then we give a brief compare to the m - serial, gold - serial and walsh - serial

    介紹了多址接入技術，討論了接入模式、時隙同步和功率控制、沖突解決的辦法，提出了基於cdma的反向鏈路多用戶接入技術。
  4. Based on the study of hfc mac protocol over contention / reservation scheme, an efficient method, which worked on random contention and polling model has been proposed in this article to meet the needs of a multi - priority service access control system

    摘要研究了基於爭用預約機制的混合光纖同軸寬帶接入網媒體接入控制協議原理，提出了隨機爭用與周期查詢排隊系統相結合的終端申請接入方式，使不同優先級的終端申請能以不同的控制機制實現接入。
  5. Specifically, for the first time all factors impairing tcp performance are identified based on network protocol hierarchy, i. e., lossy wireless channel at the physical layer ; excessive contention and unfair access at the mac layer ; frail routing protocol at the network layer, the mac layer and the network layer related mobile node ; unfit congestion window size at the transport layer and the transport layer related asymmetric path

    Tcp是一種面向連接的可靠傳輸層協議，最初是針對有線網路設計的。由於有線網路鏈路可靠性高，傳統tcp認為丟包和亂序是由網路擁塞所導致。然而，在manets中，眾多非擁塞因素導致了丟包和亂序。
  6. Since epon is a multipoint - to - point system, a major feature for this new architecture is the use of a shared transmission media between all users ; hence, medium access control arbitration mechanisms are essential for the successful implementation of epon : ensure a contention - free transmission and provide end users with an equal access to the shared media

    由於epon特殊的點到多點的網路拓撲結構，在上行方向各個光網路單元onu （ opticalnetworkunit ）共享通道帶寬，採用時分多址tdma的方式發送數據，因此需要採用媒體接入控制（ mac ）協議來協調各個onu的發送，避免上行數據的沖突。
  7. Since a cache memory system can reduce the need for main memory access, it greatly reduces the potential memory access contention in shared memory multiprocessor systems

    可以把cache看成是主存與cpu之間的緩沖適配器，藉助于cache ，可以高效地完成dram內存和cpu之間的速度匹配。
  8. Placing the pieces on separate i o paths reduces the contention of sql operations that need to access the npi

    將這些塊放在不同的i / o路徑中，可以減少訪問npi所需的sql操作的爭用。
  9. Based on the idea of contention reservation access and polling transmission, user - dependent perfect - scheduling multiple access ( upma ) protocol is presented, which supports both node mobility and multi - hop network architecture. it improves channel utilization greatly and guarantees that a node accesses the channel rapidly

    基於有效競爭預約接入、無沖突輪詢傳輸的思想提出了在無線adhoc網路中支持節點移動性和多跳網路結構的依據用戶妥善安排的多址接入（ upma ）協議。
  10. The paper also analyzed the request access delay ( rad ) when using the bandwidth allocation algorithm, and found that the number of allocated contention slots has little effect on the rad, however the rad connected with the length of upstream time segment being depicted

    論文還分析了在該帶寬分配演算法影響下的請求分組訪問延遲，發現請求分組訪問延遲受競爭時隙數的影響不大，而是與map幀所描述的上行時間段的長短有關。
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