[cisco-voip] Wireless Coverage problem

Wed Sep 1 17:40:06 EDT 2010

Hi Ben,

*         The antennas are two dipole antennas with Omni directional
radiation pattern.

*         The antennas are oriented vertically and perpendicular to the
AP body.

*         The coverage is weak with all clients but with different
levels but my main concern is to make it work with this hand held.

*         The place was a warehouse.

*         The tests were identical without any type of security (no
encryption and open authentication) and with the same SSID.

The main thing that come into my mind is whether there is a settings on
the controller that make the AP optimized for the coverage not for the
throughput as the main purpose of this solution is for hand held which
means that the data rate is not critical.

Another thing there are 10 APs in the warehouse, so is it possible that
the controller by default reduces the coverage of each AP to reduce
interference and if this is right, is there is a way to override this
behavior to solve the coverage problem ?

Your help is high appreciated.

Best Regards

Ahmed Abd EL-Rahman

From: Ben Story [mailto:ben.story at gmail.com] 
Sent: Wednesday, September 01, 2010 11:25 PM
To: Ahmed Abd EL-Rahman
Subject: Re: [cisco-voip] Wireless Coverage problem

What kind of antennae are you using?  How are they oriented?  Does the
same thing happen with a client with a different wireless chipset?  Were
the tests identical (ie was the linksys setup for the same
authentication, wireless security and SSID Broadcast settings)?

On Wed, Sep 1, 2010 at 2:46 PM, Ahmed Abd EL-Rahman
<Ahmed.Rahman at bmbgroup.com> wrote:

Hi All,

                I have 1 WLAN controller 2112 and 10 APs 1242G with
external antennas and I'm facing a problem in the coverage, as while
standing directly under any AP (about 4 meters far) without any
obstacles in-between the signal received at the hand held device is good
and when moving little a bit away the signal decreases to fair and poor
while by using a cheap stand alone Linksys AP in the same place the
signal in the hand held is excellent which is normal due to the small
distance.

So anyone has any reasons or solution for this situation ?, maybe there
are some settings in the controller can make the AP optimized for
coverage distance or something like this, please advise.

Best Regards

Ahmed Abd EL-Rahman I Senior Network Engineer 

CCVP, CCNP, CCNA, CCNA-VOICE, IPTX, UCCX, CRMCS, WLSS

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