Present :Daniel Hochberger

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Wireless Protocol performance
Seminar Presentation

• Present Daniel Hochberger
• Yonatan Keller
• Supervisor Shay Auster

2
Project Overview

• Environment OPNET
• Working over a TDMA wireless and clean network .
• Developing a MAC algorithm and a unify layer
  algorithm to unify/separate packets.
• Implementing an acknowledgment mechanism over the
  network.
• Collect statistics and analyze algorithm
  performances

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Project motivation

• Increase network performances
• Lower number of transmitted packets.
• Optimize the throughput of the channel.
• Maximal exploitation of the time-slot allowed.
• Reduce bit transmission by unifying headers
• Adapt the protocol to changing transmission rates
  network.

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Layers diagram
Ack source
Data source
Packet storing queues
Unifying layer
MAC/physical layer
5
General node algorithm
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Packet format
Data packet format
DATA
SRC Id
DST Id
Ack packet format
RN
Ack
Unified packet format
RN
SN
RN
Ack
DATA 1
DATA N
SRC Id
DST Id
Has a ack
Request number of the ack
Serial number of the packet
Request number to be sendin ack for this
packet.(Piggybacking)
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Unify/separate packets
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Unify/Separate Node
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Stop and Wait protocol
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GBN/SR protocol
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Performance measurement

• Message transmission rapidity
• t t packet transmission t packet creation
• Ack time reception t t ack reception t
  packet creation
• Network general efficiency N
• Channel throughput
• SW
• GbN
• SR

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Progress

• General design
• Unifying protocol implementation
• StopWait, Go-back-N, Selective repeat
  implementation
• Setting changing transmission rates
• Addressing issue
• Performance evaluation and measurement