packet frame 中文意思是什麼
packet frame
解釋
包幀-
First, the user access flow of inrp protocol is discussed. second, the frame architecture of inrp is introduced. third, packet process is the kernel process of inrp and the tag which differs from dns protocol, the dissertation has a deeply discussion here
我們首先概述了inrp的訪問流程，和dns的主要區別，概述了基於名字路由技術的inrp協議的幾個主要功能模塊，然後對其中幾個主要模塊進行了較深入的研究。 -
By tacking on the appropriate ip heade, this interface encapsulates each tl or el frame in an ip packet
網路介面系統用ip報頭封裝e1語音數據幀后，通過ip網路傳送。 -
Based service time distribution difference, we obtain distribution of packet number and queue of frame in system through queue theory
根據服務時間的分佈不同，用排隊論的方法分析了系統中包數的分佈和隊列長度的分佈。 -
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。 -
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。 -
Secondly, we implement a bpf model called mybpf on linux as a kernel module. it can collect packets within the netfilter frame, provide the applications with an interface in char device file manner and be attached to the nf _ ip _ pre _ routing hook defined by netfilter frame for ipv4 as a hook function. finally, we evaluate the performance between mybpf and other bpf on sock _ packet socket
該模塊以字元設備文件的形式為應用程序提供介面，並在netfilter框架為ipv4定義的nf _ ip _ pre _ routing鉤子上掛接了一個鉤子函數，該鉤子函數實現bpf虛擬機，完成對數據包的捕獲；最後，本文對mybpf模塊作了相應的測試並與在sock _ packet套介面上實現的bpf做了性能比較。 -
After data decoding, this paper analyzes the structure of transfer frame and source packet. the information of every bit is obtained from the frame and packet according to ccsds protocol and furthermore discusses the possibility of recovering the every data field bit ’ s meaning
在得到解碼數據后自動對數據幀格式和比特位的信息識別分析，實現了符合ccsds標準格式的各信息位的提取分析，並探討了完全恢復原信息含義的可能性。 -
In this paper we analyze the characteristics of the source of space data system and give three types of source packet model ; the relationship between m _ pdu multiplexing efficiency and transfer frame completion waiting time has been educed by the analysis of the process of packet multiplexing and frame completion ; then we analyze several key aspects that affect the protocol throughput performance metric to formulate the throughput performance metric of aos packet service
本文在理論方面，在總結分析空間數據系統信源特徵基礎上，建立三種信源包模型;通過分析包通道復用與成幀過程，得出m _ pdu復用效率與成幀等待時間的關系;探討了三種虛擬通道復用方案;對影響aos協議包業務吞吐量性能指標的幾個關鍵因素加以分析，推導出aos協議包業務吞吐量指標計算公式。 -
One of the characteristics of gprs service different from real - time voice service is that it requires very low erroneous frame rate. the accuracy of packet data can be guaranteed through the mechanism of retransmission, which, however, leads to longer transmission delay and low payload in spite of busy channels
Gprs業務不同於實時語音的一個特點是它要求有很低的誤幀率，這可以通過重傳機制保證分組數據的正確，但重傳將使傳輸時延大、通道盡管很忙但有效的負荷卻低。 -
Theoretical source of transparent model " s advantages is discussed, and then solutions of its key technology, last a programming realization - setting network card promsic to receive packets, keeping mac address, and checking packets base mac frame to realize transparent model in ip protocol rebuilding. the key technologies of firewall are packet filter and application proxy both of which can " t keep in step with network attack development
鑒於此，本文從透明模式防火墻的特徵和功能出發，探討了其本質、技術實現要點及可行性方案，給出有別于上述兩方案的實現：網卡置於混雜模式，保留mac地址， ip重組、檢查、轉發過程一氣呵成，將透明模式的實現融合在ip重建中，使得整個防火墻體系結構更加緊湊，提高了效率。 -
The sender tracks the packet loss status according to the algorithm - loss rate estimation based on variable frame size and switches two audio sample files in accordance with packet loss status
傳送端根據以變動框架長度為基礎之遺失率估演算法，來估算目前網路上封包遺失的狀況，並以此作為切換高低音質檔案的依據。 -
With increasing demand for higher bandwidth and lower latency packet switching, communications providers introduced frame relay
因為較高的頻寬及較低延遲的分封交換的需求增加，通訊提供者引入了訊框中繼。 -
An error detecting method which can prevent the decoding error affecting the next video packet head is used, and a restoration measure for b frame based on the mv prediction which can improve the visual quality has been studied. 3. a novel marking algorithm for ip diffserv based on the transmission condition and the different importance of video streams for decoder has been introduced
2實現了mpeg - 4的差錯檢測、可逆變長解碼rvld和差錯掩蓋方法:對i或p幀紋理區的差錯先用rvld進行解碼，然後對殘留的差錯用空間插值或運動補償方法進行掩蓋，而對p幀的運動矢量mv ，利用圖像的空間平滑特性進行恢復; 3針對b幀差錯的復原，我們還提出了一種基於運動估計的方法。 -
In analysis, we establish a packet service model and obtain the distribution of frame internal, and discussed the relation between packet delay and frame efficiency
建立了包業務模型，得到成幀間隔的概率分佈，並討論了包延時與幀效率的問題。 -
The other is the local cosine bases developed as a kind of orthogonal basis based on the fourier analysis and wavelet - packet theory. in this thesis, theoretical analysis and numerical applications are mainly focused on the beamlet - domain wave field extrapolation using g - d frame propagators. the whole thesis consists of six chapters
通過對具體信號的分析，對不同變換方法的信號表示效率進行了對比，並總結了g - d框架及對其進行尺度擴展組成的gabor函數族在應用於波場相關的研究中時，優于其它正交分解方法的特性。 -
Because orthogonal wavelet packet makes sure of not only tight frame, orthogonal, symmetries, and high order vanished - moment but linear phase as well. and its resolution is two times of the that of the two order wavelet
因為這樣的一個正交小波包，它具有正交，對稱，緊支，高階消失距，能保持線性相位；而且解析度是二進小波的二倍。 -
This dnids is composed of four parts : ldu, smu, gau and mcu. finally, the author studies the technology of nids in linux including the intrusion technology and system design. brings forward a integrated frame of a dnids, it concludes the following modules : network packet capture module, network protocol analysis module, rules analysis module, etc
最後在linux平臺下分析研究了基於網路的入侵檢測技術及其系統設計，提出了一個結構完整的入侵檢測系統框架，主要包括的模塊有:網路數據包捕獲模塊、網路協議解析模塊、規則解析模塊、決策模塊、響應模塊、通信模塊、存儲模塊、互動介面和界面管理模塊。 -
1 ) realization of software packet embedded in m - es and md - is respectively to accomplish main function of mdlp, including assignment of tei ( temporary equipment identifier ), establishment of multiple frame operation, framing, flow control and error - free transmission of packets, is detailed. 2 ) a test model is established to evaluate the robustness and stability of mdlp and verify the validity of software packets. 3 ) according to the design of radio modem construction used in m - es, the modules of interface between data terminal equipment and radio modem are achieved to enable transmission of short message and continuous pseudo - random bit stream via rs232 uart
本文首先概述了蜂窩數字分組數據網的結構和空中協議，詳細分析了移動數據鏈路協議，並在此基礎上，重點敘述了以下方面的工作： 1 ）設計並完成了分別應用於m - es和md - is端無線控制器的兩套程序實現數據鏈路層的主要功能，包括分配臨時設備號、建立鏈路、組幀和面向連接的服務保證分組正確無誤地傳輸，並進行適當的流控； 2 ）建立測試模型測試移動數據鏈路協議的可靠性和穩定性，證明了程序包的效用； 3 ）根據cdpd系統無線數據機的軟硬體總體設計方案，完成了介面模塊，實現了rs232異步串口通信，使用戶可以根據需要發送短消息或連續的偽隨機比特流； 4 ）在tms320c54x的軟體、硬體模擬平臺上，建立了cdpd試驗模型，實現了cdpd系統的mdlp基本功能。 -
In this paper, we create the network, node and process model using opnet software to simulate throughput performance of aos packet service, and choose various combinations of source packet length, transfer frame length and channel error rate to form different simulation scenarios. by analyzing the throughput - packet length, throughput - frame length simulation curves at different channel ber we get the optimal packet length and frame length configurations, and give some advice for the optimization of protocol configuration parameters according to throughput performance metric ; the complete node and process model of aos protocol have been built by opnet software, and a simple network scenario has been built to simulate and verify the validation of the protocol model
本文在建模模擬方面，用opnet軟體建立模擬aos協議包業務吞吐量性能的網路、節點、進程模型，選取不同的包長、幀長與通道誤比特率組合建立模擬場景進行模擬，得到不同誤比特率條件下吞吐量-包長、吞吐量-幀長關系曲線，經過分析得出最大吞吐量對應的最佳幀長、包長配置，給出以吞吐量性能為指標優化協議配置參數的建議;用opnet軟體搭建aos協議封裝節點模型和各個進程模型，建立簡單網路場景進行模擬驗證協議封裝節點模型的有效性。 -
Packet placed in frame to final destination
幀中的數據包被發送到最終主機
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