Logistic Warehouse Coverage

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  • Updated 4 years ago
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Hi there,
i need your support. I need coverage big logistic warehouse (approx 17000 square meters) with 2,4GHz and 5GHz.
Warehouse contain acres of metal shelving holding tens of thousands of items (food, iron, spirits etc.)
Every metal shelving aisle is 55m long, 3m wide and 15m height.

I redrew floor plans to HiveManager Planner and deployed APs as needed. Final number approx of 65 APs :-).The proposed model is Aerohive AP141.

My problem is that coverage map not looks very good (set RSSI -75). I know where is the problem but do not know how to fix it.
Problem is that APs in aisle must by placed in 15m height in the midlle of aisle. It's too high for omni anntenas.

One option is to place the AP at the end of aisle to a height of about 5m. But question is: Will be AP141 able to cover the distance of 55m and 15m height?

Similar problem: http://www.aerohive.com/resources/inn...

Please advise me. I will be grateful for any opinions.
Have a nice day!
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Vladimir Stancik

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Posted 4 years ago

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Andrew MacTaggart, Champ

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This sounds like a tough environment to design for

To me it sounds like you are going to need a variety of antenna and APs.
You are going to want to get loaners of the APs and different antenna [most likely 3rd party] and mount them in different locations and take measurements.

It might be well worth the money to have a proper Site Survey done.

Also understanding the client devices would be important and the warehouse applications and how they work.

Also understand that as inventory changes it will have an effect on the RF.
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Crowdie, Champ

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At 15m height traditional omni-directional antennas will not provide the coverage you require at ground level and the access points will have high transmit errors due to all the signal propagating 15m up.

Your description is a classic warehouse deployment so placing directional antennas 5m up (or lower if they still avoid obstacles such as forklifts)  on the perimeter walls facing inward should do the trick.  If your warehouse has five aisles (numbered 1 to 5) and they run north to south then mount the first access point with external directional antennas at the northern end of aisle one directing signal down the aisle.  The second  access point with external directional antenna should be mounted at the southern end of aisle two directing signal up the aisle.  The three access point with external directional antennas should be mounted at the northern end of aisle three directing signal down the aisle and so forth.

You will need to test a number of different antennas, as Andrew advised, as their vertical and horizontal signal propagation patterns differ resulting in different wireless client performance.