Well, I can help you with the hardware tweaks for "sectored antennas."
But first you need to tell me how you plan on hooking up said sectored
antenna to the ath5k NIC.
Adrian
On 7 May 2013 00:27, Holger Schurig <holgerschu...@gmail.com> wrote:
> You're probably 5 years too late. The MADWIFI driver is quite out of fashion
> nowadays and few people are still hacking on it. I wouldn't base any new
> development on it.
>
> What you describe is a bit like diversity: receive with all antennas,
> determine which antenna had the highest RSSI, use that antenna for transmits
> towards the client. For this you'd need to maintain your own mac-hashed
> neightborhood table in the driver.
>
> However, to my best knowledge the hardware doesn't support 4 antennas. You'd
> need some circuitry to use only some or all of those antenna ("all antennas"
> in the beacon case). And that for the tx and rx case. As the chips usually
> only suport 2 antennas, you'd need some koax switching circuitry, and sync
> that to the transmits. Things get ugly and complex pretty fast.
>
> In the end it might be cheaper to just use one AP with one sectional antenna
> ... and simply put 3 or 4 of those APs into one casing. :-)
>
>
> 2013/5/6 Mofolo Mofolo <mofol...@gmail.com>
>>
>> Hi,
>>
>> I am integrating sectorised antenna with a Wi-Fi node, basically a PC
>> running Ubuntu. The network network is setup on ad-hoc mode. Currently
>> installed driver is MADWIFI
>>
>> Please advise on how can a node perform neighbor discovery while using
>> sectorised antennas. That means for every station in a neighbor's table, an
>> appropriate antenna sector has to be recorded so as for every packet
>> transmitted, the node can select and use suitable antenna sector.
>>
>> For example:
>>
>> If we say each node is equipped with an antenna with 4 sectors, then the
>> node has to determine which sector to use when communicating with
>> neighbors. in the case where nodes A, B, C and D are aligned in a straight
>> line; node 'B' has to use a different antenna sector when communicating with
>> node 'A', as opposed to when communicating to node 'C'.
>>
>> A B C D
>>
>>
>> How can this mapping of neigbouring nodes with specific antenna sectors be
>> achieved, if maybe RSSI is used as the determining factor during building up
>> of neighbor's table?
>>
>> Thanks.
>>
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>>
>
>
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