2015-12-11 - Re: [GRASE-Hotspot] AP Hardware Recomendation

Header Data

From: Luis Alberto <l.***g@gmail.com>
Message Hash: 11debb785fe1bb0ceaaffb38584bd82bd8db30c550e248f21c24082cbf1c0186
Message ID: <CAF3s1W9KXqZ7-ZRYd3hTzH5F5NzGUGvjuuiuTPQ_3iRwUfMA_g@mail.gmail.com>
Reply To: <5669779A.7020300@radez.hr>
UTC Datetime: 2015-12-11 14:30:08 UTC
Raw Date: Fri, 11 Dec 2015 15:30:08 -0600

Raw message 

On Thu, Dec 10, 2015 at 7:01 AM, Dražen Žuvela <dr***a@radez.hr>
wrote:

> Indoor or outdoor?
>

Outdoor
It would be a public hotspot.


>
> Most APs are omni already.
> Stronger antennas will rise up signal strengths as well the speed of
> communication in both way, but it has nothing to do with number of
> concurrent clients connected at AP.
>
> Each antenna declared with higher gain, 5, 10, 15, 20 ... dbi will have
> better performance in Rx as well Tx direction (Receiving and Transmitting)
> then lower gain declared antenna.
> But there is a trade off.
> Each gain improvement means better in one or several directions while
> making worse in other.  V-H radiation diagrams are important here.
> E.G. vertical stick with gain 9dbi is omnidirectional, but it has very
> narrow angle in vertical pane, and still 360. (Like lighthouse)
>
> However, today modern APs which are declared to have higher data speeds
> (150Mbps, 300bps ... ). Besides improvement in CPU/RAM part, there is also
> special handling with radio signals which is spreading trough more then one
> antennas build on AP board itself or as external sticks or even combination
> of integrated antennas on board and one or more sticks on housing.
> There are improvements in 801.11 types 'n' and 'ac' protocol, where better
> handling radio signal with more antennas of same source.
>

Thanks, that is very useful info.
The current outdoor ap that i'm using is a directional one, that's why i
added the omni antena, so it won't affect the users around.


> I admit that still don't understand how it works. There is some unclear
> facts too: What is the meaning of 150 or 300Mbps speed if Ethernet
> interface is still 100Mbps? Has not much sense other then "marketing"
>

Maybe on a gigabit ethernet lan we can make use of it :P


> Back to you.
> For serving many concurrent clients you will need more CPU/RAM power
> inside AP or divided among several APs.
>

Yeah, i thought about it, is there a ratio between users/ap?
Maybe some ubiquiti ap?


> You can place more APs at the same place (or mast) with "sector" antennas
> oriented in different directions, making a full 360 degs. or less coverage
> circle.
> In such scenario, it is important to set each AP with same SSID and force
> them to different radio channel.
> Set them 3 channels apart from each other would be quite good. It is
> necessary to take in count foreign WiFi signals (channels and their
> strenght) nearby.
>

> Same SSID will provide seamless clients roaming between different APs
> without interruption.
>

Nice, thanks!

>
>
> *Dražen Žuvela *
> <dr***a@radez.hr>
>
> 10.12.2015. u 5:01, Luis Alberto je napisao/la:
>
> Hi!,
>
> I'm trying to set up a Hotspot for ~80 up to 100 users.
> So far the software side works fine with the 10 daily users, but i need to
> change the AP since it won't meet the expected workload of 80 users.
>
> I'm planing on extending the signal with omnidirectional antenna, maybe
> sharing load using 2 AP but if you could recomend some tested one to work
> with i would highly appreciated.
>
> Thanks in advance.
>
> --
> *Luis *
> --
> This mailing list is for the Grase Hotspot Project
> <http://grasehotspot.org>http://grasehotspot.org
> ---
> You received this message because you are subscribed to the Google Groups
> "Grase Hotspot" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to gr***e@grasehotspot.org.
> To post to this group, send email to gr***t@grasehotspot.org.
> Visit this group at
> http://groups.google.com/a/grasehotspot.org/group/grase-hotspot/.
> To view this discussion on the web visit
> <https://groups.google.com/a/grasehotspot.org/d/msgid/grase-hotspot/CAF3s1W_Hx1f4_mB7Q%3DKUXwkjkFZ0Vh_ue%2BKm7s7DSS8XygfsaA%40mail.gmail.com?utm_medium=email&utm_source=footer>
> https://groups.google.com/a/grasehotspot.org/d/msgid/grase-hotspot/CAF3s1W_Hx1f4_mB7Q%3DKUXwkjkFZ0Vh_ue%2BKm7s7DSS8XygfsaA%40mail.gmail.com
> .
>
>
> --
> This mailing list is for the Grase Hotspot Project http://grasehotspot.org
> ---
> You received this message because you are subscribed to the Google Groups
> "Grase Hotspot" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to gr***e@grasehotspot.org.
> To post to this group, send email to gr***t@grasehotspot.org.
> Visit this group at
> http://groups.google.com/a/grasehotspot.org/group/grase-hotspot/.
> To view this discussion on the web visit
> https://groups.google.com/a/grasehotspot.org/d/msgid/grase-hotspot/5669779A.7020300%40radez.hr
> <https://groups.google.com/a/grasehotspot.org/d/msgid/grase-hotspot/5669779A.7020300%40radez.hr?utm_medium=email&utm_source=footer>
> .
>



-- 
*Luis A. Guzmán García*

Thread