Site Survey Verification MAH
Dokumentnamn: Site Survey Verification MAH
Dokumentansvarig: Martin Johansson
Version: 1.0
Klassificering: Externt
Utgivningsdatum: den 18 mars 2013
Sida 2 (8)
AddPro | www.addpro.se
Malmö: 040-59 24 00 | Stockholm: 08-555 366 00 | Göteborg: 031-89 04 00
Helsingborg: 042-25 06 60 | Kalmar: 0480-296 56 | Örebro: 019-761 45 00 | Kristianstad: 044-781 42 00
Index
1 . Introduction ................................................................................................................................3
1.1 Contact Information ........................................................................................................................................ 3
1.2 Scope of Survey ............................................................................................................................................... 3
1.3 Validity ............................................................................................................................................................. 3
2 . Report .........................................................................................................................................4
2.1 Coverage .......................................................................................................................................................... 4
2.2 Signal Strength vs. Signal to Noise ration – S/N .............................................................................................. 5
3 . Notes ..........................................................................................................................................6
3.1 Signal Strength ................................................................................................................................................. 6
3.2 Signal to Noise ratio......................................................................................................................................... 6
3.3 Spectrum ......................................................................................................................................................... 6
3.4 Number of AP .................................................................................................................................................. 6
3.5 Interference ..................................................................................................................................................... 6
3.6 Other WLAN..................................................................................................................................................... 6
3.7 Possition of AP ................................................................................................................................................. 6
4 . Summary .....................................................................................................................................7
5 . Document Information ...............................................................................................................8
5.1 Version ............................................................................................................................................................. 8
Dokumentnamn: Site Survey Verification MAH
Dokumentansvarig: Martin Johansson
Version: 1.0
Klassificering: Externt
Utgivningsdatum: den 18 mars 2013
Sida 3 (8)
AddPro | www.addpro.se
Malmö: 040-59 24 00 | Stockholm: 08-555 366 00 | Göteborg: 031-89 04 00
Helsingborg: 042-25 06 60 | Kalmar: 0480-296 56 | Örebro: 019-761 45 00 | Kristianstad: 044-781 42 00
AddPro AB has conducted a Site Survey Verification of floor 4 in the building Orkanen held by Malmö Hög-
skola to review the changes made in accordance with the Site Survey performed during the summer of 2012.
This report is to compare the WLAN based on the same prerequisite as the last report and conclude the re-
sult.
This Site Survey was performed by:
Martin Johansson
AddPro AB
Stenbärsgatan 6
21231 Malmö
+46736255321
Site Survey is a method used to collect data from present Wi-Fi Access Point to determine coverage, signal to noise ratios, co-channel interference and Access Point placements in the existing Wi-Fi Environment. Spec-
trum analysis is a tool to identify none 802.11 interferences caused by other equipment or environment.
The validity of this report is based on todays and the days of the site surveys current situation. If there is any changes made to current environment or infrastructure it could affect the conclusions of this report and
must so be taken into account.
1 Introduction
1.1 Contact Information
1.2 Scope of Survey
1.3 Validity
Dokumentnamn: Site Survey Verification MAH
Dokumentansvarig: Martin Johansson
Version: 1.0
Klassificering: Externt
Utgivningsdatum: den 18 mars 2013
Sida 4 (8)
AddPro | www.addpro.se
Malmö: 040-59 24 00 | Stockholm: 08-555 366 00 | Göteborg: 031-89 04 00
Helsingborg: 042-25 06 60 | Kalmar: 0480-296 56 | Örebro: 019-761 45 00 | Kristianstad: 044-781 42 00
Attached below is 2,4Ghz and 5.0 GHz showing the current (date of survey) coverage.
2,4 Ghz
5,0 Ghz
2 Report
2.1 Coverage
Dokumentnamn: Site Survey Verification MAH
Dokumentansvarig: Martin Johansson
Version: 1.0
Klassificering: Externt
Utgivningsdatum: den 18 mars 2013
Sida 5 (8)
AddPro | www.addpro.se
Malmö: 040-59 24 00 | Stockholm: 08-555 366 00 | Göteborg: 031-89 04 00
Helsingborg: 042-25 06 60 | Kalmar: 0480-296 56 | Örebro: 019-761 45 00 | Kristianstad: 044-781 42 00
Below is the current (date of site survey) S/N ratio.
2,4 Ghz
5,0 Ghz
2.2 Signal Strength vs. Signal to Noise ration – S/N
Dokumentnamn: Site Survey Verification MAH
Dokumentansvarig: Martin Johansson
Version: 1.0
Klassificering: Externt
Utgivningsdatum: den 18 mars 2013
Sida 6 (8)
AddPro | www.addpro.se
Malmö: 040-59 24 00 | Stockholm: 08-555 366 00 | Göteborg: 031-89 04 00
Helsingborg: 042-25 06 60 | Kalmar: 0480-296 56 | Örebro: 019-761 45 00 | Kristianstad: 044-781 42 00
The signal strength is now between 35 and 65 dBi throughout 98% of the floor which is to consider nominal.
The Signal to Noise ratio is now between 30 and 55 dBi throughout 95% of the floor which is good.
None 802.11 RF disturbances were not measured during this survey as the area remain unchanged regarding
installation of other systems or products that could interfere.
The number of Aps has been increased by about 25-30% compared to before. Overall the AP count is high in
my experience for covering this area. The Signal Strength of this model of AP is lower than, from what my
experience gives, one would expect requiring an increase in Access Points.
The interference has increased as a toll for adding sufficient coverage to all parts of the floor. This will pro-
vide slower overall throughput but in this case is necessary to provide sufficient coverage to the area.
There is still an ESSID present on Floor 5 called “Perspective Free WiFi” that is provided by another set of APs
from another manufacturer. This contributes a lot to Co-Channel interference especially since its communi-
cation is on odd channels as Channel 4 and Channel 13 which is not recommended. See Signal Strength from
this WLAN below:
All AccessPoints are changed to be mounted in accordance with best practice for signal propagation. This
meaning the position, height and direction of the AP.
3 Notes
3.1 Signal Strength
3.2 Signal to Noise ratio
3.3 Spectrum
3.4 Number of AP
3.5 Interference
3.6 Other WLAN
3.7 Possition of AP
Dokumentnamn: Site Survey Verification MAH
Dokumentansvarig: Martin Johansson
Version: 1.0
Klassificering: Externt
Utgivningsdatum: den 18 mars 2013
Sida 7 (8)
AddPro | www.addpro.se
Malmö: 040-59 24 00 | Stockholm: 08-555 366 00 | Göteborg: 031-89 04 00
Helsingborg: 042-25 06 60 | Kalmar: 0480-296 56 | Örebro: 019-761 45 00 | Kristianstad: 044-781 42 00
It is my opinion that under the current circumstances the Wireless LAN at floor 4 Orkanen Malmö Högskola
is planned in accordance with Best Practice of Wireless regardless of choice in manufacturer if disregarding
the WLAN with ESSID “Perspective Free WiFi”. The survey shows that recommended levels regarding Signal
Coverage and S/N ratio are meet. The amount of APs required to provide adequate coverage is higher than I
expected comparing my experience using other product vendors. The amount of APs is also higher then
when customer upgraded from their old 802.11b/g network even tough 802.11n is considered to provide
atleast the same or better range as it uses MIMO technology.
4 Summary
Dokumentnamn: Site Survey Verification MAH
Dokumentansvarig: Martin Johansson
Version: 1.0
Klassificering: Externt
Utgivningsdatum: den 18 mars 2013
Sida 8 (8)
AddPro | www.addpro.se
Malmö: 040-59 24 00 | Stockholm: 08-555 366 00 | Göteborg: 031-89 04 00
Helsingborg: 042-25 06 60 | Kalmar: 0480-296 56 | Örebro: 019-761 45 00 | Kristianstad: 044-781 42 00
Version Description Author Date
1.0 First version Martin Johansson 2013-03-18
5 Document Information
5.1 Version