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Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 1 Altai Super WiFi Training WiFi.

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Presentation on theme: "Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 1 Altai Super WiFi Training WiFi."— Presentation transcript:

1 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 1 Altai Super WiFi Training WiFi Network Planning Professional Services Altai Technologies Limited

2 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 2 Module Outline Basic WiFi Technology Wireless Network Planning Coverage Planning Site Survey Wireless Backhaul Link

3 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 3 Basic WiFi Technology

4 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 4 WiFi Standard 11b11g11a11n HT 2011n HT 40 Frequency band 2.4GHz 5GHz2.4 or 5 GHz Maximum Data Rate 11Mbps54Mbps 130Mbps300Mbps UsageAccess BridgingBoth

5 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 5 Wireless Operation Modes 1.Access Point (AP Mode) – 2.4GHz for laptop access 2.Repeater Mode – 2.4GHz for wireless in and wireless out 3.CPE Mode – 2.4GHz for wireless in and Ethernet out 4.Bridge Mode – 5GHz for wireless backhaul link Bridge Access Point CPE Indoor Access Point Internet 1 2 3 4 Repeater

6 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 6 Wi-Fi Spectrum 802.11b/g/ng are operating at 2.4GHz Different countries have different spectrum allocated for Wi-Fi To minimize the overlapping, it is recommended to have a separation 25MHz, i.e. 5 channels. Example of Separate Channels at 2.4GHz are 1, 6, 11

7 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 7 Wi-Fi Spectrum 802.11a, 802.11na are operating at 5GHz All 5GHz channels are “non-overlapping” channels.

8 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 8 Wireless Network Planning

9 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 9 Wireless Network Planning Taking photos Determine power supply and backhaul determine a preliminary pole location Determine the coverage area and requirement Preliminary determine number of sites and locations Perform site survey (Site Info stored in the database) Conduct a coverage survey (Optional) May need to re- determine the pole, or even, site location

10 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 10 Wireless Network Planning Site acquisition & Installation Site configuration & acceptance test Keep maintenance OK Determine if the coverage and service meet the requirements. No Yes Go back and determine antenna configuration should be changed, or more sites are required

11 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 11 Wireless Network Requirements Target Coverage Area – Dimension of the area on a map – User distribution – Building/Trees distribution and height Anticipated Number of Users – Potential subscribers – Can take reference to no of schools, mobile phone subscriber number, WiMax users Wireless Application – Voice over IP – Surveillance camera – Email or web surfing Wired Backhaul – Uplink and downlink bandwidth – Availability and extensibility location Installation Site – Possible site acquisition – Power availability

12 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 12 Coverage Area Estimation In sub-urban area, we assumed cell radius of A8n to be 0.35 km In dense-urban area, we assumed cell radius of A8n to be 0.25 km In sub-urban area, we assumed cell radius of A8Ein to be 0.60 km In dense-urban area, we assumed cell radius of A8Ein to be 0.40 km

13 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 13 Network Capacity (A8Ein) Estimated maximum throughput per user is 1 Mbps An average of 20 Mbps throughput per A8Ein 20 concurrent users at maximum traffic for the A8Ein Typical activity ratio is 20% 100 concurrent users per A8Ein Oversell ratio is 4 100 x 4 = 400 subscribers per A8Ein

14 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 14 Site Survey Site information – Stored in a database for reference – Site Location – Site Location Details – Site Photo – Photo of each sector view

15 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 15 Site Survey A B C D N Configuration BearingDowntilt Sector A105 Sector B705 Sector C13010 Sector D19010 Example Site Information Example Site Map Example Site Configuration

16 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 16 Site Acquisition Site Negotiation Power Supply and Wired Network Link Antenna Installation Planning Site Confirmation Installation Layout and Construction Plan Site Information Database

17 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 17 Site Installation (A8Ein) North A 0.7m Rooftop Height  25m Side-View 3 Rooftop >1.7 m 0.8m Side-View 3 0.7m 1 m Pole base 1m x 1m x 0.125m

18 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 18 Coverage Planning

19 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 19 Calculate Downtilt The cell coverage could be confirmed by downtilt Assume – h : antenna height – d : distance –  : downtilt angle The down tilt angle is:  = arc-tan( h / d) – Example 1: h = 20m, d = 500m  = 2.3  – Example 2: h = 80m, d = 500m  = 9  h d 

20 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 20 Case Study – Scenario 1 Case Antenna at 20/F rooftop (  h = 80m), A8Ein vertical beam width is 12  Scenario 1 If the user needs to focus on the area of 500m location: then, d = 500m, h = 80m  = 9  Note: d1 = 290m d2 = 1,479m h d  d1 d2

21 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 21 Case Study – Scenario 2 Case – Antenna at 20/F rooftop (  h = 80m), A8Ein vertical beam width is 12  Scenario 2 – If the user needs to cover up to 500m, but most the WiFi clients are located close to the radio site, then, d2 = 500m, h = 80m - Downtilt = 9  + 6  = 15  Note: – d = 298m – d1 = 198m h d  d1 d2  = 9 

22 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 22 Angle Meter Depends on – Antenna height – Antenna vertical beam-width – Distance required – WiFi Users Distribution Angle Meter

23 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 23 Objective – Community Interact Program providing Internet access to non- profit and charity organizations Problem – Original mesh AP supports less than 2Mbps with latency problems Solution – Community Wireless selects Altai as the replacement product – 12 BTS deployed in an area of 7 sq. km – Blanket 70% of East Palo Alto City – Provide coverage to over 35,000 residents East Palo Alto, USA

24 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 24 East Palo Alto, CA, USA

25 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 25 Estimated Coverage

26 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 26 Hub Site Locations 2 km Hub 1 Hub 2

27 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 27 Location of the Test Site Site 06 Site 10 Site 09 Site 05 Site 03 Site 11 Hub 2 switch B4 B6 B7 B8 B9 Hub 1 B2 switch Turbo 11a Internet

28 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 28 Site 1: Predicted/Planned Coverage Site 1 0.32 mile Predicted Coverage Measured Coverage

29 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 29 Site 2: Predicted/Planned Coverage Site 2 0.32 mile Predicted Coverage Measured Coverage

30 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 30 Site Survey

31 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 31 Site 1 Site 2 Field Measurement in Hangzhou

32 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 32 Zhong Shan Road North Site Location Lower Rooftop (19/F) Upper Rooftop P2 P1 North Two site locations Building Height  75m

33 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 33 Site 1 A8 Antennas

34 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 34 View from Site 1 D (310°) A (150°) C (280°) B (220°) West South (Zhong Shan Road North) Northwest (Wulin Square)

35 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 35 Site 1, Sector A Zhongshan Road North

36 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 36 Site 1, Sector A (upward) Seeing the building from Fengqi Road (at 250m distance) Site 1

37 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 37 Wireless Backhaul Link

38 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 38 WiFi Bridge 5GHz External Antenna A2 WiFi Bridge 802.11na 5GHz Switch A8Ein Super WiFi 802.11b/g/ng 2.4GHz A2 WiFi Bridge802.11na 5GHz Switch A2 WiFi AP 802.11b/g/ng 2.4GHz B5 Ultra Bridge5GHz Bridge Switch A8-Ein Super WiFi 802.11b/g/ng 2.4GHz

39 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 39 WiFi Bridge External Antenna Options for A8Ein and A2e – High gain directional antenna: 20dBi WiFi Bridge Requirements – Clear Line of Sight (LOS) – Fine tuning antenna alignment – Configuring bridge distance in web admin Common Bridge Distance: 5~10km B5 Bridge Ultra Long Distance: 20~80km

40 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 40 Coverage Mapping

41 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 41 Coverage mapping Coverage mapping is important step to examine the result of the network planning. Measure the DL RSSI of different AP along the path in specified area. Tools for WiFi Coverage mapping – InSSIDer with GPS

42 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 42 Coverage mapping result example 600 m

43 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 43 Coverage mapping Result of the coverage mapping is used to – Adjust the down tilt, direction, height and transmit power of AP – Determine if additional sites required to add to improve the network coverage. Coverage test is always encouraging before site acquisition of new sites to confirm the new sites coverage – Setup A8Ein in the new sites temporary with tripod and do coverage mapping.

44 Altai Super WiFi Not for Distribution – Altai Confidential Altai Super WiFi Not for Distribution – Altai Confidential 44 Thank You


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