Antenna Type and channel bandwidth

[ines-s-santos]

Hi!

I have two important questions in order to proceed with my work:

1. Can I choose the type of antenna? For example, a tri-sectorized one (not omnidirectional).

2. Can I define a channel bandwidth? I want to use a 10 MHz channel, it is possible?

Thank you.

[ramonfontes]

Hi, 1. Not yet. It could be implemented with wmediumd. 2. Yes, you can. I just added support to ht_capab and you can use the param with the same name when you create APs. For example: *ap1 = net.addAccessPoint('ap1', ssid="simplewifi", mode="n", ht_capab="[HT40-][SHORT-GI-20][SHORT-GI-40]", channel="5")* Please refer to hostapd.conf <https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf> for further information on how to configure HT. If you need support to VHT please let me know which parameters you need to make it work. BTW, I don't know what is the impact of this type of configuration during data transmission (I couldn't read about it yet). Any help is welcome ;). 2017-08-29 13:39 GMT-03:00 ines-s-santos <notifications@github.com>:

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Hi! I have two important questions in order to proceed with my work: 1. Can I choose the type of antenna? For example, a tri-sectorized one (not omnidirectional). 2. Can I define a channel bandwidth? I want to use a 10 MHz channel, it is possible? Thank you. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#105>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEnmeqwBkUExiHZ3WP8gs-XrX7z6uCk1ks5sdD7PgaJpZM4PGOzf> .

[ines-s-santos]

Alright thank you, I'll try that. Other question:

• And can I change the frequency ? I know that the frequency depends on the mode, but can I define a frequency value and not use the mode ?

[ramonfontes]

Yes, you can. If you change the channel, you change the frequency.

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Sent from my android

On 31 Aug 2017 09:02, "ines-s-santos" ***@***.***> wrote: Alright thank you, I'll try that. Other question: - And can I change the frequency ? I know that the frequency depends on the mode, but can I define a frequency value and not use the mode ? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#105 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEnmeu9dkiPJsqftM5jkLbKQgpquqh7Oks5sdqDZgaJpZM4PGOzf> .

[ines-s-santos]

Yes, but I want a specific frequency, 2 GHz, and do not correspond to any channel frequency.

[ramonfontes]

Hi Inês, Could you please let me know which wifi technology works with 2Ghz?

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Sent from my android On 31 Aug 2017 12:14, "ines-s-santos" <notifications@github.com> wrote: Yes, but I want a specific frequency, 2 GHz, and do not correspond to any channel frequency. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#105 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEnmeuLxWHeHgDWDFSqiu05XKZQeNbi7ks5sds3ygaJpZM4PGOzf> .

[ines-s-santos]

It is not a Wi-Fi technology, I am simulating a Mobile Network, LTE (4G).

[ramonfontes]

As probably you know, mac80211_hwsim was designed for wifi networks. If you want to simulate 4G, you should manipulate bw, loss, latency and delay.

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Sent from my android

On 31 Aug 2017 12:32, "ines-s-santos" ***@***.***> wrote: It is not a Wi-Fi technology, I am simulating a Mobile Network, LTE (4G). — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#105 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEnmeiEaijiQ76HORPDo9qqdhhnFRSy0ks5sdtIEgaJpZM4PGOzf> .

[ines-s-santos]

Alright. Those parameters are defined for each link ? Or can be defined for the network in general or for an access point ?

[ramonfontes]

For the network in general (by default). You can change it if you want. https://github.com/intrig-unicamp/mininet-wifi/blob/master/mininet/wifiLink.py

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Sent from my android

On 31 Aug 2017 12:50, "ines-s-santos" ***@***.***> wrote: Alright. Those parameters are defined for each link ? Or can be defined for the network in general or for an access point ? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#105 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEnmegqpday0NMEc9CX7OoD9yR2E_RQUks5sdtY5gaJpZM4PGOzf> .

[ines-s-santos]

Okay thank you !
I'll take the opportunity to ask another question:
I want to do a graph with the throughput depending on the distance with mobility, so I need to print the sta distance as she moves, so how can I get the distance of a specific sta at any second and print it to a txt?

[ramonfontes]

Since you have the position of every node (node.params['position']), you just have to use the formula for calculating the distance.

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Sent from my android

On 1 Sep 2017 05:57, "ines-s-santos" ***@***.***> wrote: Okay thank you ! I'll take the opportunity to ask another question: I want to do a graph with the throughput depending on the distance with mobility, so I need to print the sta distance as she moves, so how can I get the distance of a specific sta at any second and print it to a txt? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#105 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEnmesAVQRtq4AjjLPZG6BUfXKbuMaEmks5sd8cPgaJpZM4PGOzf> .

[NadiaMOUAWAD]

Hello, I just read the conversation.
I am wondering if it is possible to integrate 4G in mininet-wifi knowing that mac80211_hwsim was designed for wifi networks. If it is so, how can we do this? Could it be by simply changing the network parameters?

[ramonfontes]

Hello, Yes, you can do this by changing the network parameters. A new mode (4G mode) could be created for wmediumd as well. As a consequence, the module mac80211_hwsim could be extended as well. 2017-11-01 10:22 GMT-03:00 NadiaMOUAWAD <notifications@github.com>:

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Hello, I just read the conversation. I am wondering if it is possible to integrate 4G in mininet-wifi knowing that mac80211_hwsim was designed for wifi networks. If it is so, how can we do this? Could it be by simply changing the network parameters? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#105 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEnmel9PlYPJ4IB7qiZGMf3Gv-QHjppfks5syHCMgaJpZM4PGOzf> .