Contiki cooja simulation set of different link quality PRR RSSI for each link and its use

1. Different set of PRR,RSSIand LQI in Contiki
COOJAsimulation
By: RUGAMBA
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A Step by step process based on the existing COOJA
simulation features

2. Introduction
• When starting simulation, the cooja proposes 5 types of radio transmission
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3. Coojasimulation
• a
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4. Coojasimulation
• With the UDGM the Tx/Rx ratio can be set from this option
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5. Coojasimulation
• With the Tx/Rx ratio set to 90% all nodes set change to 90% as the max of success ratio
• The distance between node change the value between a node to another (each link)
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6. Coojasimulation
• To set different PRR or RSSI or LQI per link, we use Directed Graph Radio Medium (DGRM)
• The radio type is set when starting a new simulation
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7. Coojasimulation
• From the simulation tools we can choose the option to set each link value
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8. Coojasimulation
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9. Coojasimulation
• The first add link will show up and its default value
• This step only creates a mono-directional link with 2 a Tx and 1 a Rx
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10. Coojasimulation
• This add the link from 1 as Tx and 2 as Rx
• All the value are kept as default
• LQI stands for Link Quality Indicator (currently receive signal)
• Outgoing LQI values can be calculated from coherent (demodulated) Packet
Error Rates (PER), RSSI and incoming LQI values. The exact method depends
on the network stack being used
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11. Coojasimulation
• a Value [1.0,
Value [-10,
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12. Coojasimulation
• Bidirectional-link from 4 to 2 with Rx ration of 90%
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13. Coojasimulation
• Bidirectional-link from 4 to 3 with Rx ration of 90%
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14. Coojasimulation
• Exemple of link from/to node 2
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15. Coojasimulation
• It can also allow to check each mote duty cyle
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