Handoff Algorithm in wireless NIC..
Anand S Parhar <[email protected]> Mon, 16 Oct 2006 05:02:57 +0530 (IST)
| Newsgroups | gmane.linux.linux-wlan.user |
|---|---|
| Message-ID | <[email protected]> |
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Hello all,=0A I am a newbie in the wireless lan field, so I first apolog=
ise if you think my question is very basic/stupid.=0A I am currently wor=
king on implementation of a handoff algorithm to support VoIP in wireless L=
ANs. Typically the complete handoff process takes time from 300 ms to sever=
al seconds depending on the vendors of NIC and the AP. Obviously, VoIP flow=
s cannot tolerate this much delay. Hence modification to current handoff al=
gorithm is necessary.=0A Now the first thing I want to know is where is =
the handoff algorithm located? I mean is it in the card firmware? or is it =
in the device driver of the card? It would be very helpful, if somebody can=
clearly tell what functions actually firmware and device drivers do? Also =
please provide some useful links if you know any.=0A Having said this, I=
would like to ask, if it is possible to change the handoff algorithm code =
in proprietary NICs? I mean has anybody tried this out before? or is there =
any open-source code available which can be used for modifying the handoff =
algorithm? =0A Please give your valuable comments on this. Many thanks i=
n advance.=0A=0AThanks and Regards,=0AAnand.=0A=0A =0A=0A
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<html><head><style type=3D"text/css"><!-- DIV {margin:0px;} --></style></he=
ad><body><div style=3D"font-family:times new roman, new york, times, serif;=
font-size:12pt">Hello all,<br> I am a newbie in the wirel=
ess lan field, so I first apologise if you think my question is very basic/=
stupid.<br> I am currently working on implementation of a=
handoff algorithm to support VoIP in wireless LANs. Typically the complete=
handoff process takes time from 300 ms to several seconds depending on the=
vendors of NIC and the AP. Obviously, VoIP flows cannot tolerate this much=
delay. Hence modification to current handoff algorithm is necessary.<br>&n=
bsp; Now the first thing I want to know is where is the handoff=
algorithm located? I mean is it in the card firmware? or is it in the devi=
ce driver of the card? It would be very helpful, if somebody can clearly te=
ll what functions actually firmware and device drivers do? Also please prov=
ide some useful
links if you know any.<br> Having said this, I would lik=
e to ask, if it is possible to change the handoff algorithm code in proprie=
tary NICs? I mean has anybody tried this out before? or is there any open-s=
ource code available which can be used for modifying the handoff algorithm?=
<br> Please give your valuable comments on this. Many th=
anks in advance.<br><br>Thanks and Regards,<br>Anand.<br><br> </div><br></b=
ody></html>
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