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flow and error control techniques ppt Papaikou, Hawaii

University of Education Go-Back-N ARQ, lost frame 33. If the frame successfully reaches the destination, next frame is sent. Data can be corrupted during transmission. But if collision occurs than the station will transmit again.

For more details on NPTEL visit http://nptel.iitm.ac.in Kategorie Bildung Lizenz Standard-YouTube-Lizenz Mehr anzeigen Weniger anzeigen Wird geladen... Single point of failure (token), token overhead, latency are the concerns in token passing. The system returned: (22) Invalid argument The remote host or network may be down. Please try the request again.

bygondwe Ben 28509views Ch 11 bysoumya ranjan moh... 7244views Go Back N ARQ byguesta1b35273 27509views Share SlideShare Facebook Twitter LinkedIn Google+ Email Email sent successfully! There are four interval defined. Whether in the other case with the large window size at receiver end as we can see in the figure (b) if the 2nd packet comes with error than the receiver So this way the problem of duplication is solved.

Exp: If 16 bits 10001010 00100011 is to be sent to receiver. In the response, if B wants to grant the permission, it will send the CTS packet to A giving permission to A for sending the packet. Here when a station wants to send packets, first it senses the channel. Parity checking Parity adds a single bit that indicates whether the number of 1 bits in the preceding data is even or odd.

the same method for rest of the parity bits. Model of Frame Transmission University of Education 6. Carrier sensing allows the station to detect whether the medium is currently being used. Transkript Das interaktive Transkript konnte nicht geladen werden.

Generated Fri, 14 Oct 2016 10:34:24 GMT by s_ac4 (squid/3.5.20) In ALOHA Collision probability is quite high. All implementations must support DCF but PCF is optional. Wird geladen... Über YouTube Presse Urheberrecht YouTuber Werbung Entwickler +YouTube Nutzungsbedingungen Datenschutz Richtlinien und Sicherheit Feedback senden Probier mal was Neues aus!

Diagram shows how to CRC process works. [a] sender CRC generator [b] receiver CRC checker Checksum Check sum is the third method for error detection mechanism. When A wants to transmit a packet to B, first it sends RTS (Request to Send) packet of 30 bytes to B with length L. Start clipping No thanks. So in this case the loss of data is more.

A Simplex Stop-and-Wait Protocol In this Protocol we have taken the following assumptions: It provides unidirectional flow of data from sender to receiver. CSMA/CA CSMA/CA is Carrier Sense Multiple Access/Collision Avoidance. Melde dich bei YouTube an, damit dein Feedback gezählt wird. Receiver's window size is fixed and equal to the maximum number of sender's window size.

The system returned: (22) Invalid argument The remote host or network may be down. If it senses the channel idle, station starts transmitting the data. ii. Generated Fri, 14 Oct 2016 10:34:24 GMT by s_ac4 (squid/3.5.20) ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://0.0.0.7/ Connection

Error Control[edit] Network is responsible for transmission of data from one device to another device. A Protocol Using Go Back N iii. Flow Control

  • Limits the amount or rate of data that is sent
  • Reasons:
    • Source may send frames faster than destination can process headers
    • Higher-level protocol user at destination may be slow Error Detection Error detection is the process of detecting the error during the transmission between the sender and the receiver.

      If the remainder result in this division process is zero then it is error free data, otherwise it is corrupted. So the protocol called Go back N and Selective Repeat were introduced to solve this problem.In this protocol, there are two possibility at the receiver’s end, it may be with large After that MAC layer is explained. Final data unit is 10001010 00100011 01010000.

      Data unit is composite by number of 0s, which is one less than the divisor. It becomes Checksum and sends along with data unit. Melde dich bei YouTube an, damit dein Feedback gezählt wird. Pal, Department of Computer Science Engineering,IIT Kharagpur.

      Station D will not receive RTS, but it will receive CTS from B. Please try the request again.