[Question] Different PCR curve, data rate, and packet size for separate nodes?

[James-Sloop]

I am interested in developing my own EMANE model and so far I have been working with the 802.11 and RFPipe models to learn EMANE. RFPipe has a single PCR curve, packet size, and data rate used across the emulation and it seems like the 802.11 has multiple PCR curves, a single packet size, and a single data rate. The 802.11 uses just 1 PCR curve at a time (the same for every node) and doesn't change the data rate index dynamically based on network performance. Is this understanding correct? I am curious if it is possible to have different nodes within the emulation use different PCR curves and data rates or if those have to be emulation-wide parameters. Is there an easy way to configure as a model plug-in or will it require modifying EMANE? If it does require modifying EMANE, how difficult would that be to do and could anyone point me in the right direction to get that started? Thank you for the help.

[patelkb]

EMANE framework does not need to be modified to support what you want to do. Your radio model implementation would contain everything you mention you want to do. It is up to the radio model implementation to determine how it handles receive packet processing as it pertains to packet completion rates, dyanmic rate adaptation and any other other features the waveform is required to emulate. If the model you are developing supports N different modulations and each modulation has varying bit error rate curves, your model should have a separate curve to capture that behavior. In theory, you are not required to use curves. It is up to you to implement that processing however you want to achieve it. As far as dynamic rate/modulation adaptation goes, none of the open source models has dynamic rate adaptation. For the 802.11 model, each node can be configured to use a different rate as long as they are all configured to use the same mode. The model also allows you to change that rate runtime. The feature to dynamically change the rate based on network conditions is not implemented within the model. So if your model requires dynamic rate adaptation, you would implement that within your model using your specific algorithm. In the case of the 802.11 model, you can actually have a separate application outside of the model that gets access to transmit and receive metrics via the EMANE control port and dynamically determines what rate each node should be using and update the configuration via the control port. kb Kaushik B. Patel Adjacent Link LLC CEO, Director of Engineering

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On 2/23/24 16:32, James-Sloop wrote: I am interested in developing my own EMANE model and so far I have been working with the 802.11 and RFPipe models to learn EMANE. RFPipe has a single PCR curve, packet size, and data rate used across the emulation and it seems like the 802.11 has multiple PCR curves, a single packet size, and a single data rate. The 802.11 uses just 1 PCR curve at a time (the same for every node) and doesn't change the data rate index dynamically based on network performance. Is this understanding correct? I am curious if it is possible to have different nodes within the emulation use different PCR curves and data rates or if those have to be emulation-wide parameters. Is there an easy way to configure as a model plug-in or will it require modifying EMANE? If it does require modifying EMANE, how difficult would that be to do and could anyone point me in the right direction to get that started? Thank you for the help. — Reply to this email directly, view it on GitHub <#243>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABPLXM4WH55JJIOE5ZIHWVLYVEDH3AVCNFSM6AAAAABDXL6RYCVHI2DSMVQWIX3LMV43ASLTON2WKOZSGE2TCOBTG44TOMY>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[James-Sloop]

This was a very helpful response, thank you so much.