Site Survey Report - Wifi-solutions.ru
WLAN Design Prepared for: VA Ann Arbor Healthcare System (VAAAHS) Prepared by: Chris Redmond Location: Building 1 (Main Campus) - 10th Floor Powered by AirMagnet
Table of Contents 1 Executive Summary 1.1 Survey Overview 1.1.1 Floor Plan Overview 2 Current AP Placement and Configuration 2.1 AP Placement Overview 2.2 AP Detail Breakdown 3 Current Deployment Site Survey 3.1 Access Point Coverage Regions 3.2 Overall Signal Coverage 4 AirWISE Validation Against Requirements 4.1 AirWISE Requirement 4.2 AP List 4.3 Signal Coverage 4.3.1 Redundant AP Coverage 4.4 Channel Interference 4.5 Channel Width 4.5.1 Overall 5 Planner Report 5.1 Planner AP List 5.2 Planner AP Location Map 5.3 Planner Signal Coverage 5.4 Channel Interference 6 Conclusions
WLAN AP Design Location AirMagnet Survey 1 Executive Summary This wireless site survey and RF analysis were performed in order to gain an in-depth understanding of present RF interference sources and to meet overall wireless coverage requirements. The primary goal and subsequent objectives were designed with coverage, desired throughput and usability as primary driving requirements from the business group. This survey was created using an industry standard set of AirMagnet Survey PRO wireless tools and software, which are used for building and securing wireless networks. This survey encompasses site surveying, RF spectrum analysis surveying and real time active site surveying techniques. This document includes site survey specific information, Access Point configuration and installation data sheets, and RF coverage pattern maps. A wireless survey was performed at the customer site. The purpose of the survey is to determine the number and placement of wireless access points necessary to provide ubiquitous coverage for the entire building. 1.1 Survey Overview Powered by AirMagnet CONFIDENTIAL Page 3 of 34
WLAN AP Design Location AirMagnet Survey 1.1.1 Floor Plan Overview The image below details the area that was surveyed. It includes the floor plan and the dimensions of the building. It can be useful to refer back to this view from some of the other graphs to help orient yourself. Dimensions Powered by AirMagnet X 210.76 ft Y 130.00 ft CONFIDENTIAL Page 4 of 34
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WLAN AP Design Location AirMagnet Survey 2 Current AP Placement and Configuration The floor plan below shows the locations of the currently installed APs or desired if this is a new deployment. The specific details for each AP are described in the section labeled "AP Detail Breakdown". 2.1 AP Placement Overview Powered by AirMagnet CONFIDENTIAL Page 6 of 34
WLAN AP Design Location AirMagnet Survey 2.2 AP Detail Breakdown Powered by AirMagnet CONFIDENTIAL Page 7 of 34
WLAN AP Design Location AirMagnet Survey Access Points AP Name Media Type MAC Address Channel Power,mW SSID Max Signal ---- Non ACL, Neighbors, Rogues ---AP-1 802.11n-2.4 GHz 00:0D:C8:00:00:02 CH (1) Unknown SSID 3 -34 AP-2 802.11n-2.4 GHz 00:0D:C8:00:00:04 CH (1) Unknown SSID 3 -34 AP-1 802.11n-5.0 GHz 00:0D:C8:00:00:03 CH (36) Unknown SSID 12 -35 AP-2 802.11n-5.0 GHz 00:0D:C8:00:00:05 CH (36) Unknown SSID 12 -35 AP-3 802.11n-5.0 GHz 00:0D:C8:00:00:07 CH (36) Unknown SSID 12 -35 AP-4 802.11n-5.0 GHz 00:0D:C8:00:00:09 CH (36) Unknown SSID 12 -35 AP-5 802.11n-5.0 GHz 00:0D:C8:00:00:0B CH (36) Unknown SSID 12 -35 AP-6 802.11n-5.0 GHz 00:0D:C8:00:00:0D CH (36) Unknown SSID 12 -35 AP-7 802.11n-5.0 GHz 00:0D:C8:00:00:0F CH (36) Unknown SSID 12 -35 Number of AP Total APs: 9 9 Total BSSIDs: 9 AP Signal Strength (dBm) AP-1 AP-2 AP-2 -35 -34 -35 AP-1 -34 AP-3 maxSignal 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -35 -35 AP-7 -35 -35 AP-4 -35 AP-6 AP-5 Powered by AirMagnet CONFIDENTIAL Page 8 of 34
WLAN AP Design Location AirMagnet Survey 3 Current Deployment Site Survey Powered by AirMagnet CONFIDENTIAL Page 9 of 34
WLAN AP Design Location AirMagnet Survey 3.1 Access Point Coverage Regions The image below shows the areas covered by the access points (in dBm). The color shown represents the AP with the strongest signal in any given area.This map will give you a visual representation of the Wi-Fi coverage area for the AP's. Powered by AirMagnet CONFIDENTIAL Page 10 of 34
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WLAN AP Design Location AirMagnet Survey 3.2 Overall Signal Coverage The image below displays the signal coverage (in dBm) at each point in the map layout. As a general rule, regions with signal levels below -67 dBm provide insufficient coverage for standard use (this value may vary depending on user requirements, service level agreements, applications used, number of users serviced, etc.). APs are displayed in their detected locations (and reflect the existing power and antenna properties). Note: An active Wi-Fi area can incorporate a variety of environmental factors that can vary throughout the day and may adversely affect RF coverage. Powered by AirMagnet CONFIDENTIAL Page 12 of 34
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WLAN AP Design Location AirMagnet Survey 4 AirWISE Validation Against Requirements This report section provides a comprehensive summary of all AirWISE data relating to the current survey project. AirMagnet's AirWISE engine allows users to specify minimum acceptable thresholds for various requirements within the network. It compares the data gathered during the survey process against the requirements. Requirements that are not met are highlighted in their respective sections. Several sections also contain signal heat maps that help demonstrate exactly where the threshold violations can be found. Each section provides a breakdown of each requirement and displays a pass/fail rating based on how well the collected results stand up against the objectives. Powered by AirMagnet CONFIDENTIAL Page 14 of 34
WLAN AP Design Location AirMagnet Survey 4.1 AirWISE Requirement The chart below lists each AirWISE requirement configured for the current survey project file . These thresholds are governed by the settings in the AirWISE page and can be adjusted at any time (although any changes made to the AirWISE requirements will require that this report be regenerated ). Every AirWISE setting below displays the percentage of the current project that meets its requirement; any areas that are below 90% show up in red, indicating that there is room for improvement in that particular category.The sections later in this report describe each AirWISE alarm in more detail . Fail Description Value Desired Signal Coverage 100.00% of Good Area. Minimum AP signal strength required -67 dBm Multiple AP Signal Coverage 99.70% of Good Area. Number of APs required to provide coverage 3 Minimum AP signal strength required to provide coverage -67 dBm Channel Interference 0.00% of Good Area. Interfered APs: Exclude APs if signal strength is weaker than -75 dBm Interfering APs: Exclude APs if signal strength is weaker than -85 dBm Channel Width 100.00% of Good Area. 40 MHz Channel Width Allowed 20HT MHz Channel Width Allowed 20 MHz Legacy Channel Width Allowed 80 MHz Channel Width Allowed Powered by AirMagnet CONFIDENTIAL Pass/Fail Result Pass: 90.00% of Good Area. required to pass Pass: 90.00% of Good Area. required to pass Fail: 90.00% of Good Area. required to pass Pass: 100.00% of Good Area. required to pass Page 15 of 34
WLAN AP Design Location AirMagnet Survey 160 MHz Channel Width Allowed 4.2 AP List The table below displays information regarding each AP detected during the current survey project , including the AP name, media type, channel, SSID, power level, signal strength, and MAC address. As noted in the column headings, power is measured in increments of miliWatts and signal in dBm . This information can help reveal any unauthorized or unexpected APs detected within the network ; should an unknown AP appear, steps can be taken to identify or eliminate it from the wireless environment. AP Name Media Type MAC Address Channel SSID AP-1 802.11n-2.4 GHz 00:0D:C8:00:00:02 1 Unknown SSID 3 -34 AP-2 802.11n-2.4 GHz 00:0D:C8:00:00:04 1 Unknown SSID 3 -34 AP-1 802.11n-5.0 GHz 00:0D:C8:00:00:03 36 Unknown SSID 12 -35 AP-2 802.11n-5.0 GHz 00:0D:C8:00:00:05 36 Unknown SSID 12 -35 AP-3 802.11n-5.0 GHz 00:0D:C8:00:00:07 36 Unknown SSID 12 -35 AP-4 802.11n-5.0 GHz 00:0D:C8:00:00:09 36 Unknown SSID 12 -35 AP-5 802.11n-5.0 GHz 00:0D:C8:00:00:0B 36 Unknown SSID 12 -35 AP-6 802.11n-5.0 GHz 00:0D:C8:00:00:0D 36 Unknown SSID 12 -35 AP-7 802.11n-5.0 GHz 00:0D:C8:00:00:0F 36 Unknown SSID 12 -35 Number of AP: Powered by AirMagnet 9 Total BSSIDs: CONFIDENTIAL Power,mW Max Signal 9 Page 16 of 34
WLAN AP Design Location AirMagnet Survey 4.3 Signal Coverage The Signal Coverage requirement allows the user to specify that certain regions of the deployment must have sufficient coverage to provide adequate service . Areas of the map that meet the current requirements for Signal coverage are labeled in light green. Areas that do not meet the requirement are displayed according to the color code on the slider bar below the image. Powered by AirMagnet CONFIDENTIAL Page 17 of 34
WLAN AP Design Location AirMagnet Survey Desired Signal Coverage Pass/Fail Result Pass: 100.00% of the surveyed area meets the Minimum requirement. (90.00% of Good Area. required to pass) Minimum AP signal strength required Minimum of -67 dBm Powered by AirMagnet CONFIDENTIAL Page 18 of 34
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WLAN AP Design Location AirMagnet Survey 4.3.1 Redundant AP Coverage The Redundant AP Coverage requirement allows the user to specify that certain regions of the deployment must have coverage from more than one AP in order to be considered adequate service . Areas of the map that meet the current requirements for AP coverage are labeled in light green . Areas that do not meet the requirement are displayed according to the color code on the slider bar below the image.This requirement contains two configurable thresholds: the user must specify the minimum number of APs required for the site as well as the minimum signal level that is considered acceptable for the APs to warrant consideration. If either one of these two thresholds is not met, the area is considered non-compliant. Multiple AP Signal Coverage Pass/Fail Result Pass: 99.70% of the surveyed area meets the Minimum requirement. (90.00% of Good Area. required to pass) Number of APs required to provide coverage 3 Minimum AP signal strength required to provide coverage -67 dBm Powered by AirMagnet CONFIDENTIAL Page 20 of 34
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WLAN AP Design Location AirMagnet Survey 4.4 Channel Interference Areas of the map that meet the current requirement for Supported Speed are labeled in light green. Areas that do not meet the requirement are displayed according to the color code on the slider bar below the image. Let the mouse hover over any area of the map to show additional details. Important Note: AirMagnet Survey measures interference from the point of view of a particular AP . Thus for a given AP, AirMagnet shows a cumulative view of all the various Wi-Fi sources that are interfering with that one AP. As a result, users should deselect all APs that are not the focus of investigation (using the device tree to the left on the Display page). The signals from de-selected devices are still considered when determining interference to other APs . Channel Interference Pass/Fail Result Fail: 0.00% of the surveyed area meets the Minimum requirement. (90.00% of Good Area. required to pass) Interfered APs: Exclude APs if signal strength is weaker than -75 dBm Interfering APs: Exclude APs if signal strength is weaker than -85 dBm Powered by AirMagnet CONFIDENTIAL Page 22 of 34
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WLAN AP Design Location AirMagnet Survey 4.5 Channel Width This section of the channel width requirements will show the actual detected channel usages detected. The heat map will show the areas that will be the cause of the pass or failure of the requirements specified for the channel width. 4.5.1 Overall Channel Width Pass/Fail Result Pass: 100.00% of the surveyed area meets the Minimum requirement. (100.00% of Good Area. required to pass) 40 MHz Channel Width Allowed 20HT MHz Channel Width Allowed 20 MHz Legacy Channel Width Allowed 80 MHz Channel Width Allowed 160 MHz Channel Width Allowed Powered by AirMagnet CONFIDENTIAL Page 24 of 34
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WLAN AP Design Location AirMagnet Survey 5 Planner Report AirMagnet Planner simulates Access Points as well as antenna and building characteristics to predict the number of Access Points needed and their respective locations before an actual WiFi deployment . This report provides real-time Access Point signal coverage for the floor plan and recommends the number of Access Points needed and their locations on a floor plan (marked by numbers in red). This report also provides detailed information for the Access Points being deployed : Name/ MAC address of the Access Point. Channel/SSID allocated. Planned location co-ordinates for the Access Point. Height of the Access Point/antenna above floor level. Type of the antenna and its specifications. Powered by AirMagnet CONFIDENTIAL Page 26 of 34
WLAN AP Design Location AirMagnet Survey 5.1 Planner AP List The table below lists the properties for each AP placed on the plan , including its name, location (as obtained from the grid on the previous page), MAC address, SSID, height, antenna type and angle of orientation, channel, and power. Note that some APs may have two listings: the first represents the AP's 802.11a antenna, and the second 802.11b/g. Since these two mediums may have different antenna types and properties , they are separated in the table. This list can be used as a 'shopping list' or 'bill of materials list' for the wireless equipment to be purchased. 1 AP Name Location: MAC SSID AP-1(BGN) 4-D 00:0D:C8:00:00:02 Unknown SSID Antenna: Cisco Aironet 3700i 2.4GHz 4dBi Channel: 1 Angle: 0 Heigth 10 Power: 3 mWatts A 4-D AP-1(AN) Antenna: Cisco Aironet 3700i 5GHz 4dBi A 2 2-C AP-2(BGN) Antenna: Cisco Aironet 3700i 2.4GHz 4dBi 00:0D:C8:00:00:03 Channel: 36 00:0D:C8:00:00:04 Channel: 1 Unknown SSID Angle: 0 Unknown SSID Angle: 0 10 Power: 12 mWatts 10 Power: 3 mWatts A AP-2(AN) 2-C Antenna: Cisco Aironet 3700i 5GHz 4dBi A 3 AP-3(AN) 2-D Antenna: Cisco Aironet 3700i 5GHz 4dBi A 4 AP-4(AN) 2-B Antenna: Cisco Aironet 3700i 5GHz 4dBi A 5 AP-5(AN) 4-B Antenna: Cisco Aironet 3700i 5GHz 4dBi A 6 AP-6(AN) 4-E Antenna: Cisco Aironet 3700i 5GHz 4dBi A 7 AP-7(AN) 3-E Antenna: Cisco Aironet 3700i 5GHz 4dBi A Powered by AirMagnet 00:0D:C8:00:00:05 Channel: 36 00:0D:C8:00:00:07 Channel: 36 00:0D:C8:00:00:09 Channel: 36 00:0D:C8:00:00:0B Channel: 36 00:0D:C8:00:00:0D Channel: 36 00:0D:C8:00:00:0F Channel: 36 CONFIDENTIAL Unknown SSID Angle: 0 Unknown SSID Angle: 0 Unknown SSID Angle: 0 Unknown SSID Angle: 0 Unknown SSID Angle: 0 Unknown SSID Angle: 0 10 Power: 12 mWatts 10 Power: 12 mWatts 10 Power: 12 mWatts 10 Power: 12 mWatts 10 Power: 12 mWatts 10 Power: 12 mWatts Page 27 of 34
WLAN AP Design Location AirMagnet Survey 5.2 Planner AP Location Map The image below displays the site map with a grid overlay to provide a means of describing each AP 's location (for example, an AP placed in the top-left corner of the grid will be described by location "1-A"). The APs are numbered in the sequence that they were placed on the plan ; these numbers correspond to the APs listed in the AP List Powered by AirMagnet CONFIDENTIAL Page 28 of 34
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WLAN AP Design Location AirMagnet Survey 5.3 Planner Signal Coverage The image below displays the signal coverage (in dBm) at each point in the map layout. Refer to the legend below the map for the dBm values corresponding to each color region. As a general rule, regions with signal strengths below -67 dBm provide insufficient coverage for standard use (this value may vary depending on user requirements, service level agreements, applications used, number of users serviced, etc.).APs are displayed in their planned locations and reflect the specified power and antenna properties. Note that an active WiFi area can incorporate a variety of environmental factors that can vary throughout the day and may adversely affect projected RF coverage . Powered by AirMagnet CONFIDENTIAL Page 30 of 34
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WLAN AP Design Location AirMagnet Survey 5.4 Channel Interference The image below displays the interference level (in percentage) at each point in the map layout. Refer to the legend below the map for the percent values corresponding to each color region.APs are displayed in their planned locations and reflect the specified power and antenna properties. Note that the interference levels present in the environment can vary depending on several factors, such as the number of APs on a single channel, number of devices present, non-802.11 interferers, etc. It is also important to note that while the report may indicate a particular channel, the Radio Resource Management (RRM) on the Wireless Controller will choose a channel that best suits the deployed environment. Powered by AirMagnet CONFIDENTIAL Page 32 of 34
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WLAN AP Design Location AirMagnet Survey 6 Conclusions Overall, based on planned placement of the access points, more than 90% of the facility will meet the levels of RF signal strength (-67 dBm) as specified in the Statement of Work. Adjusting the scale to - 67 dBm showed 100% of the entire survey area is covered at this signal strength. Description Value Desired Signal Coverage 100.00% of Good Area. Minimum AP signal strength required -67 dBm Multiple AP Signal Coverage 99.70% of Good Area. Number of APs required to provide coverage 3 Minimum AP signal strength required to provide coverage -67 dBm Channel Interference 0.00% of Good Area. Interfered APs: Exclude APs if signal strength is weaker than -75 dBm Interfering APs: Exclude APs if signal strength is weaker than -85 dBm Channel Width 100.00% of Good Area. 40 MHz Channel Width Allowed 20HT MHz Channel Width Allowed 20 MHz Legacy Channel Width Allowed 80 MHz Channel Width Allowed 160 MHz Channel Width Allowed Powered by AirMagnet CONFIDENTIAL Pass/Fail Result Pass: 90.00% of Good Area. required to pass Pass: 90.00% of Good Area. required to pass Fail: 90.00% of Good Area. required to pass Pass: 100.00% of Good Area. required to pass Page 34 of 34
This survey was created using an industry standard set of AirMagnet Survey PRO wireless tools and software, which are used for building and securing wireless networks. This survey encompasses site surveying, RF spectrum analysis surveying and real time active site surveying techniques. This document includes site survey specific information, Access
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5 SUGGESTED READINGS Smith, G.M. 1971. Cryptogamic Botny. Vol.I Algae & Fungi. Tata McGraw Hill Publishing Co., New Delhi. Sharma, O.P. 1992.
