packet control 中文意思是什麼
packet control
解釋
包控制, 報文分組控制-
As a whole the system may compart three modules : ndis drivers in the kernel mode, the dll program in the user mode and the user application program, adopting the share memory technology three modules realize the data share of the control canal rule, the encapsulation data and the network neiborhood name and so on, so we can easily finis1 " the packet authentication by the control canal rule, improve the filtering efficiency of the system. whereas the current of firewall technology, the system has wide utily value and business value. this software is based on windows 2000 operating system, the programming language is chosen as visual c + + 6. 0 and win2000 ddk
從總體上可以劃分為以下三個模塊：核心層的ndis網路驅動程序、應用層的動態鏈接庫程序以及用戶應用程序，這三個模塊之間通過內存共享技術完成對控管規則、封裝數據、網上鄰居名字列表等數據的讀寫操作，從而很方便的根據控管規則實現了對網路封包的認證操作，提高了系統的過濾效率。鑒于目前防火墻技術的發展趨勢，本系統具有廣泛的實用價值和商業價值，因此具有一定的推廣前景。軟體的開發基於windows2000操作系統，開發語言採用visualc + + 6 . 0和win2000ddk 。 -
Finally, the paper gives an example of the system used in the automatically spinning control system in the machine. many essential parameters were tested, which includes communication speed, the percentage of errorness or lost packet, and the response time etc. all prove that the system has very good performance and great value in application
測試表明系統具有極好的性能，能夠在100米左右的范圍內掛接100個以上的控制節點並以500kbps的速率通信，系統響應時間小於lins ，出錯率和丟包率均低於萬分之一，囚此該系統在工業自動化中具有很大的應用價值。 -
After that, qos management methods are introduced, including packet classification, congestion control and buffer queue management. several queuing principles are compared such as fifo queuing, prioritized queuing and weighted fair queuing. tail drop and active queue management are also introduced in this part
同時對epon系統採用的qos管理策略做了詳細的闡述，分析了報文分類方法、擁塞管理策略、緩沖隊列管理策略，對比了fifo隊列、 pq隊列和wfq隊列等幾種主要的隊列特點，以及尾丟棄和主動隊列管理aqm的區別。 -
The internet - induced problems such as packet dropout and asynchrony can all be regarded as problems induced by the communication delays. hence, how to deal with the stability issue incurred by the time - varying communication delays is the key problem in the control of the internet based telerobotic systems
從網路對控制系統的影響來看，丟包和亂序等問題都可以轉化為時延問題，所以研究隨機時延對系統的影響是網路遙操作系統穩定性分析和設計的關鍵。 -
Secondly, the paper describe the principle of atm network, and the function of ' sar " ( segmentation and reassembly ) and the format of packet aal5, and introduce the basic idea of ipoa, and the design project and implementing of the control chip. later, the paper introduce the logic function and operational principle of packet buffer control chip and prove the feasibity and correctness of the arithmetic. at last the paper introduce crc - 32 arithmetic based on look up and implement it with hardware
接著詳細論述了核心路由器atm網路實現的原理，包括「 sar 」 （ segmentationandreassembly ）功能和aal5報文的格式， ipoa基本思想，以及控制晶元的設計方案和實現途徑等。然後又論述報文緩存區控制晶元的工作原理和邏輯功能等，並對演算法的可行性，正確性等進行論證。最後介紹了一種基於查表的crc - 32演算法的原理及其硬體實現。 -
The communication control unit ( ccu ) is a machine which can connect the group host computer with its subordinate command post computers and observe post computers, and which can scan the communicating channels 、 deal with the packet 、 differentiate and ascertain the route etc.
通信控制器是連接群主機和下屬各指揮所、觀察所計算機的設備，它可以掃描各條通信線路，進行報文處理，判別和確定路由等。 -
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。 -
Control the number of times a multicast packet can be forwarded by a router, also known as the time to live, or hop count
控制路由器可以轉發多路廣播數據包的次數，也稱作生存時間（ ttl ）或躍點計數。 -
When studying the network performance, flow control and resource provisioning of communication networks, traffic model plays a very important role. the recent studies show that the date network traffic is self - similar, so the markovian model, which describes telephone networks accurately, is not suitable for date networks. the self - similarity of the network traffic has severe impact on flow control and queuing analysis in date networks, therefore it has received significant attention. in this paper, g m 1 queuing model is used to analyze the queuing performance of generic variable length packet networks for the first time. the self - similar traffic is generated by multiplexing a large set of independent pareto heavy - tailed interarrival on off sources. the simulation results show that the heavy - tailed traffic results in queuing performance deterioration for variable length packet networks, which is in accordance with the analytical results for atm switches
業務量的自相似特徵顯著影響網路的流量控制與排隊分析，已經引起人們的極大重視。採用g m 1排隊模型對分組長度可變的網路的排隊性能進行了分析和模擬，其中自相似業務量是通過疊加大量獨立的到達間隔為pareto重尾分佈的on off源來生成的。模擬結果表明，自相似業務量導致網路的排隊性能劣化，這與有關文獻對atm交換的分析結果一致。 -
Attempting to use eapol in a shared medium environment that does not support the use of secure associations renders port - based network access control highly vulnerable to attack ; for example, station a can mount a successful denial - of - service attack on station b simply by issuing an eapol - logoff packet using station b s individual mac address. " see ieee 802. 1x specifications, page 21, section 7. 9, lines 34 - 39, available to link to in the
在不支持使用安全關聯的共享媒體環境中進行使用eapol的嘗試會導致基於埠的網路訪問控制極易受到攻擊；例如，工作站a只要發出一個使用工作站b的個體mac地址的eapol - logoff包，就能夠在工作站b上掛裝一個成功的拒絕服務攻擊。 」 -
A double time - scale rate control algorithm for multimedia real - time applications in packet switched networks
分組網上多媒體實時業務雙時間尺度速率控制演算法 -
In packet based wireless video communications, when best band distribution, not only source distortion should be considered, but also channel distortion caused by channel errors. the existing macroblock - layer rate control schemes calculates quantization parameters of all macroblocks ( mb ) in a frame in a raster scan order, and then encodes the mbs in the same order. actually, the quantization distortion is heavily dependent upon the coding order of mbs
在基於包的無線視頻傳輸中，最佳帶寬分配時，不僅要考慮信源編碼失真，也要考慮由於通道差錯引起的通道失真；已有的宏塊層碼率控制演算法以矩陣掃描的順序計算一幀中所有宏塊的量化參數，事實上量化失真與宏塊的編碼順序有很大關系，改變宏塊的編碼順序，使復雜的宏塊分配到更多的比特數，顯然能大大提高編碼效率。 -
Packet data service - logical - link control
分組數據服務.邏輯鏈路控制 -
A control scheme for packet acquisition is described in this paper, which is an adapitive threshold control system for packet acquisition
摘要提出一種自適應報文分組捕獲閾值控制方法。 -
As the scheme of packet distributed influence the performance of parallelism, in this paper, the hdw ( hash - based dynamic weight ) scheme for allocation packets in network processors is presented. the scheme is building and keeping one mapping relationship between packets ’ identifier and pes in a table of hash. the mapping formula is derived from the hrw ( highest random weight ) scheme, it is complemented by a feedback control mechanism designed to monitor processor ’ s utilization
由於報文分配策略影響網路處理器并行性能，我們提出了hdw （ hash - baseddynamicweight ）負載分配演算法，基於報文流標識與pe間建立映射關系，並將映射關系保存在哈希表中，映射關系基於hrw （ highestrandomweight ）演算法，增加了負載反饋迴路監控pe負載狀況，通過動態調整策略阻止pe間負載偏差。 -
This text has analysed load balancing method of existent especially lvs cluster system and recommended the net packet and netfilter ’ s frame structures in the linux operating system ; it has compared the cooperative - type - cluster with tradictional cluster in the net packets ’ queue ways and with active cluster in the load balancing dispatcher way, which has reflected the superiority of cooperation type cluster ; the three major parts of the cooperative - type - cluster have been designed and realized in this text, which includes sync packets ’ priority service for dmcs 、 “ priority and avoid sudden load unbalance ” dispatch way at the cooperation of nodal servers and director and active nodal server which ensure cluster normally running when cluster join or rduce node server ; the cooperative - type - cluster ’ s control frame controlled by homepage has been constructed ; the mulit - services cluster system has been realized ; this text has used the existing server pressure testing tools to test the cooperative - type - cluster and lvs cluster, then has comparaed and analysed the two
本文分析了現有服務器集群特別是lvs集群系統的負載均衡方法，介紹了linux系統下的報文和netfilter的框架結構;將所提出的合作式集群與傳統集群在報文排隊方式上進行比較，與主動式集群在負載均衡調度方式上進行比較，體現了合作式集群的優越性;設計並實現了合作式集群體系結構的三大部分:針對分散式測控系統的加權服務、負載均衡器與節點服務器合作式「加權防突」負載調度、保證集群運行不受加減節點干擾的主動性真實服務器;構建了通過網頁界面控制合作式集群的控制框架;實現了一個可運行的合作式多服務集群系統，運用現有服務器壓力測試工具對合作式集群和lvs集群進行負載測試，並對測試結果進行比較分析，同時通過壓力測試實現加權服務。 -
Rbtcp is rate based, uses only end - to - end mechanism, performs rate control at the receiver, and uses inter - packet delays as the primary metric for rate control
Rbtcp是基於速率的，運用端到端的機制，以分組間的延遲作為主要的監控標準在接受端執行速率控制。 -
Di ffserv model is composite of data path and control path, the data path finishes packet pretreatment and forward while the control path finishes resource manage
實現diffserv模型可以分為數據通路和控制通路兩部分，數據通路完成分組的預處理和轉發，控制通路完成資源的管理。 -
The medium access control ( mac ) layer protocol of the airlink interface between the mobile data base station ( mdbs ) and mobile end systems ( m - ess ) in cellular digital packet data ( cdpd ) is studied firstly. the access method of slotted non - persistent digital sense multiple access with collision detection ( dsma / cd ) is described mainly
本文首先研究了蜂窩數字分組數據（ cdpd ）空中介面中的介質接入控制層（ mac ）協議，詳細論述了基於時隙的非堅持的、帶沖突檢測的數字載波偵聽多址接入協議（ dsma cd ） 。 -
From the above figure, we can see the original structure remains unchanged and the new packet - switched network is formed by adding a packet control unit ( pcu ) to the bss part
圖1gprs網路結構從網路結構圖可以看到，原有的網路結構保持不變，只是在bss部分增加了分組控制單元（ pcu ） ，新建了一個分組網路。
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