packet data flow 中文意思是什麼
packet data flow
解釋
信息包數據流-
Make clear the procedure of sending and receiving packet of kernel and the implementation of traffic control. the special mechanism in linux such as wait queue, task queue, time interrupt is also explained. after analyzing the file system of linux at large, we bring forward the design of modifying of file system. since many little file is created during the service of email and file service, we introduce the non volatile random access ram, by modifying the arithmetic of file system, changing the data flow of file system
本文詳細介紹了針對網路專用服務器的專用linux系統的設計，對linux文件系統進行了詳盡的解析，包括vfs的實現， buffercache的作用等；並對塊設備驅動程序在內核中各個介面進行了分析；解析了內核接收和發送數據包的全過程以及流量控制在內核中的全過程；並對linux系統的一些特殊的機制如等待隊列，任務隊列，時鐘中斷等進行了詳細的解釋。 -
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。 -
Such a gprs packet access method not only increases the connection speed but also solves the problem of charging for the access to wap content. the price - sensitive gprs users of always - on service will be charged on the basis of data flow ; they do not have to worry about the duration - based charging system
Gprs這種分組接入的方式不但提高了連接速度，而且解決了接入wap內容的資費問題，人們不用擔心按照通信時長計費的模式， gprs使用戶隨時在線，並按數據流量計費，在用戶對價格非常敏感的情況下，對業務的開展是很有好處的。 -
As a result, it is no need for the endpoints to maintenance any system control task. in this article we propose a compactness coupling conference system architecture, and at the same time we analysis the system key techniques, giving a part of flow chart and pseudocode as examples. main content are given as below : how to use direcshow technique to obtain multimedia data ; multimedia data transport over ip network ; multicast principal and application in the system ; packing and unpacking rtp / rtcp packet so as to control network flow and in this part we introduce spillage arithmetic ; as the core part of the system, conference control and management are the main concern in our design
323框架基礎上提出緊耦合式會議系統體系結構，並以c s結構作為實現模型；本文對會議系統的中心mcu流程進行分析設計，並建立數據結構；該部分還涉及到對各個資源的調度；為了對會議控制有更好的理解，用petri網描述了會議控制會議管理的過程並提出了靈活的授權管理機制；對服務器端的數據通信設計了多播通信的實現方案；本文簡單回顧了directshow技術的應用，並在此基礎上實現了多媒體數據的採集和回放；為實現多媒體在網路上實時傳輸選擇不可靠傳輸協議udp ，為使數據能正確回放，採用了rtp和rtcp協議。 -
Based on the research of videoconference systems of h. 323 protocol over ip networks and the author ' s experiences of implementing h. 323 videoconference systems in remote education area, in this thesis the main factors that affect videoconference quality are analyzed, and a dynamic bit rate allocation model is proposed and partly implemented. this model is designed to dynamically allocate bit rate for multi - media data flow ( including audio data and video data ) in fixed bandwidth network environment. when continuous multi - media packet losses are detected in ip based h. 323 videoconference system, the bit rate of video data is adjusted meanwhile the bit rate of audio data remains unchanged, and the bit rate allocation of multi - media data ( including audio data and video data ) is optimized as a whole effect
本文結合作者在h . 323視頻會議系統應用於遠程教育的經驗，通過對現有的基於ip網路的h . 323協議視頻會議系統的研究，分析了影響視頻會議質量的原因，提出並部分實現了在固定帶寬的網路環境下，基於ip的h . 323視頻會議的多媒體數據包發生丟包、抖動或延時時，保持音頻數據位速率不變，通過對視頻數據的位速率的進行調整，最終實現旨在提高視頻會議語音質量的多媒體數據位速率動態調整的模型。 -
Also the very important factor quality of service ( qos ) is investigated, the different qos supports in the ip packet switch network are given and analyzed, including intr - serv mode and related rsvp and diff - serv qos mode. the architecture to guarantee the end - to - end qos over the different protocols and different network domains in transmitting the real time vocal data flow is provided
此外，論文對于實時語音數據網路的服務質量qos保障進行了闡述，對于正在發展的ip網路qos保障協議包括資源預留協議、區分服務模式和多標簽交換協議進行了探討，並結合語音的ip網路特點，提出在整個系統中實現端到端的有保障qos的實現方式。 -
To supply the gap of current network protocol used in tele - medical monitoring systems, according to a complete life signal monitoring system based on mobile platform, this dissertation presents life signal wearable monitoring protocol. firstly, designing the proper format of data packet and control packet on the basis of life signal ’ s specialty to enhance the transmitting efficiency. secondly, describing the protocol in the method of formalization, designing the flow of the protocol and implementing it by coding. thirdly, analyzing the performance of the protocol on both local machine and lan, debugging and modifying the software to meet the require
首先，根據生命信號的特點，本著提高傳輸效率的原則，設計了生命信號數據報文和控制報文的合理格式;其次，採用形式化方法對協議進行了描述，設計了協議的工作流程並編碼實現;再次，在單機和網路環境下進行了性能分析，調試修改軟體並使其達到設計要求。 -
In the last few years, the network attack technology has greatly changed from the scale to method, while the traditional packet - filtering firewall has many limitations to the modern network attack : 1. the traditional packet - filtering firewall filters the data flow according to the rules established beforehand to reject illegal access and accept the legal access
近年來，網路攻擊技術在規模與方法上都發生了較大變化，傳統的包過濾防火墻在應對現代網路攻擊時，卻存在著許多的缺陷： 1 、傳統的包過濾防火墻都是根據一些事先規定好的過濾規則對網路的數據流進行過濾，從而阻止不合法的訪問，同時允許合法的訪問順利通過。
分享友人