Indoor Cell Site An...
 
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Indoor Cell Site Analysis

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(@trewmte)
Posts: 1877
Noble Member
Topic starter
 

Here is a pleasant presentation from Ericsson regarding expectation for indoor radio coverage.

View the video and see if you can identify 15 key points for cell site analysis and make a comment about them below. It is fun and there is no pressure to get it right, just say what you think you might look to establish?

http//www.youtube.com/watch?v=PcvZ2BwXZ7A

 
Posted : 24/03/2011 7:14 pm
jhup
 jhup
(@jhup)
Posts: 1442
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This is not my area but I'll bite.

Presuppositions - In building cell has the same issues as regular towers - obstacles, interference, strength. We still want the same information - location, direction, speed of travel. That is, was communication made or not made from a specific location, and often at a specific time?

Spot reading, route reading, triangulation . . . same thing as outside, except much smaller,maybe even precise scale.

 
Posted : 24/03/2011 9:16 pm
hcso1510
(@hcso1510)
Posts: 303
Reputable Member
 

Greg,
I'll try and start this off and maybe come back later.

1. What is the distance of the building from the outer antenna(s) Can the signal strength of the antenna be strengthened or weakened in any way to assist in this installation. And if the strength can be modified what effect would that have on the signals outside the building that are using that antenna as well?

2. What type of RF shielding is present in the building due to its construction. Brick, concrete, metal?

3. What is the layout of the floors. Are the floors broken up into individual offices or is there a large open area with cubicles? It would seem as thought that would have an effect on the location if the installation of these internal antennas?

Next!

 
Posted : 24/03/2011 9:20 pm
(@trewmte)
Posts: 1877
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Topic starter
 

Jhup and hcso1510 - good observations

I'll chuck in some observations

1) assuming it is cell coverage is one operator involved or more than one?

2) what broadcast cell IDs would be relevant would they be network specific or building specific?

3) cell coverage area (pico or microcell)?

4) would the coverage be sustainable for the LTE ambitions given the reference to mobile broadband in the presentation?

5) what happens if it is WiFi coverage and not cellular, would it still be considered cell site analysis (CSA) or would it be called wireless site analysis (WSA)?

6) would the inbuilding coverage exclude certain types of mobile handsets from using the coverage?

7) what test equipment would be used?

Anymore anyone can think of?

 
Posted : 25/03/2011 12:31 am
jhup
 jhup
(@jhup)
Posts: 1442
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Are the micro towers cycled, that is turned off, or go to "sleep" mode (ex. after hours, power saving mode when no neighbor is working)?

Interference timing. Ex. Some A/C units kick on at specific conditions. Microwaves go crazy at lunch time on each floor at the same approximate coordinate.

Is it close to highway, stop sign, red light? Some badly made "Obstacle Detection Sensor System" equipped trucks can wreak havoc in all radio ranges for a short period.

Is there a large body of water nearby? (I had some fun experiments with this D)

We are also now dealing with vertical placement of towers. Will the phone pick up the micro tower right under my foot, or right above my head? What if there are sewage pipes in the floor (attenuation issue)… What was for lunch in the cafeteria? mrgreen

 
Posted : 25/03/2011 4:53 am
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