Sliding Window Protocol

Sliding Window Protocol

Sliding windows protocol works as follows:
  1. Sender sends a fixed number of frames without acknowledgments.
  2. Each frame is labelled with a sequence number.
  3. On getting acknowledgments from the receiver.
  4. Sender sends more frames.
  5. Each acknowledgement is labelled with a respective frames sequence number.
Precautions:
There should not be duplicate sequence numbers.

Example of Sliding window protocol;
Window size is 7.
Sender can transmit 7 frames without acknowledgement.
Frame no. 1,2,3,4,5,6,7.

 1 6 7 8 9 10 11

Now sender transmit 4 frames and received an acknowledgment that the
first 3 frames are successfully received.

 1 6 7 8 9 10 11

The window will slide forward by three frames.

 1 5 6 7 8 9 10

Now sender will cover next 7 frames.
Frame no. 4,5,6,7,8,9,10.

Which looks like windows is sliding from left to right.

More topics from Computer Network to read.
Computer Network
EasyExamNotes.com covered following topics in Computer Network.
  1. Data Link Layer
  2. Framing
  3. Byte count framing method
  4. Flag bytes with byte stuffing framing method
  5. Flag bits with bit stuffing framing method
  6. Physical layer coding violations framing method
  7. Error control in data link layer
  8. Stop and Wait scheme
  9. Sliding Window Protocol
  10. One bit sliding window protocol
  11. A protocol Using Go-Back-N
  12. Selective repeat protocol
  13. Application layer
References:
  1. Andrew S. Tanenbaum, David J. Wetherall, “Computer Networks” Pearson Education.
  2. Douglas E Comer, “Internetworking with TCP/IP Principles, Protocols, And Architecture", Pearson Education
  3. Kaveh Pahlavan, Prashant Krishnamurthy, “Networking Fundamentals”, Wiley Publication.
  4. Ying-Dar Lin, Ren-Hung Hwang, Fred Baker, “Computer Networks: An Open Source Approach”, McGraw Hill.
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Principles of Programming Languages
EasyExamNotes.com covered following topics in these notes.

Practicals:
Previous years solved papers:
A list of Video lectures References:
  1. Sebesta,”Concept of programming Language”, Pearson Edu 
  2. Louden, “Programming Languages: Principles & Practices” , Cengage Learning 
  3. Tucker, “Programming Languages: Principles and paradigms “, Tata McGraw –Hill. 
  4. E Horowitz, "Programming Languages", 2nd Edition, Addison Wesley

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    Computer Organization and Architecture 

    EasyExamNotes.com covered following topics in these notes.

    1. Structure of desktop computers
    2. Logic gates
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    6. Register transfer language
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    8. Register in Assembly Language Programming
    9. Arrays in Assembly Language Programming

    References:

    1. William stalling ,“Computer Architecture and Organization” PHI
    2. Morris Mano , “Computer System Organization ”PHI

    Computer Network ↓ 👆
    Computer Network

    EasyExamNotes.com covered following topics in these notes.
    1. Data Link Layer
    2. Framing
    3. Byte count framing method
    4. Flag bytes with byte stuffing framing method
    5. Flag bits with bit stuffing framing method
    6. Physical layer coding violations framing method
    7. Error control in data link layer
    8. Stop and Wait scheme
    9. Sliding Window Protocol
    10. One bit sliding window protocol
    11. A protocol Using Go-Back-N
    12. Selective repeat protocol
    13. Application layer
    References:
    1. Andrew S. Tanenbaum, David J. Wetherall, “Computer Networks” Pearson Education.
    2. Douglas E Comer, “Internetworking with TCP/IP Principles, Protocols, And Architecture",Pearson Education
    3. KavehPahlavan, Prashant Krishnamurthy, “Networking Fundamentals”, Wiley Publication.
    4. Ying-Dar Lin, Ren-Hung Hwang, Fred Baker, “Computer Networks: An Open Source Approach”, McGraw Hill.