Version 15 (modified by SungHoon Seo, 14 years ago) (diff)


Columbia University WiMAX Campus Deployment and Installation

1. People

  • Henning Shculzrinne (PI)
  • SungHoon Seo (postdoctoral researcher)
  • Jan Janak (visiting scholar)

2. TODOs

  1. Contact Facilities to mount pole mount and ODU on Fairchild roof top
  2. Request permission from Dean's office
  3. Preliminary base station testing with Wi-Fi antenna by using attenuator (it should be set with reduced (lowest) TX power 0 dBm)
  4. Purchase additional necessary items
  5. Ethernet activation (1402B) when all equipments are ready via Patrick (CUIT staff)

3. History

  1. Obtained FCC licence on Apr 14, 2010
  2. Site survey on Jun 24 and Sep 30, 2010
    • We chose Fairchild building rooftop (12 fl) for mounting WiMAX antenna + ODU and HAM radio station (14 fl) to install IDU+server(s).
  3. The first WiMAX package arrived on Jun 16, 2010
    • shipment from Rutgers University
      1. Outdoor unit x 1 EA
      2. GPS receiver antenna x 1 EA
      3. Fiber cable x 1 ROLL (?? feet)
      4. Sector antenna x 1 EA
      5. Mounting brackets for ODU and the antenna x 1 SET
      6. Power connector for the ODU x 1 EA
      7. Ligthning surge protector for the WiMAX antenna x 1 EA
  4. Buying required items (via Elias Tesfaye, officer in CS department)
  5. Visiting WINLAB, Rutgers University on Oct 8, 2010
    • Obtained the rest of the equipments:
      1. WiMAX indoor unit (IDU) x 1 EA
      2. ASN-GW Server x 1 EA
      3. IDU/ODU power supplies x 2 EA
      4. AWB US210 USB clients x 10 EA
      5. Intel Link 6250 mini PCI module x 2 EA
  6. Project request to the Facilities on Oct 9, 2010
  7. Space Unit measurement on Oct 13, 2010 @ Fairchild building

4. Campus WiMAX radio coverage map (expected)

a. 2D map view (by Google map) b. Aerial view (by Bing map)
Campus WiMAX radio coverage Campus WiMAX radio coverage-aerial view

5. Conceptual diagram for deployment

Diagram for Columbia Univ. Campus WiMAX deployment Diagram (ODU+antenna)

Fairchild building rooftop (12 fl)

Antenna site on Fairchild Building Sight toward CEPSR from rooftop (12f) at Fairchild Building Rooftop, Fairchild Building

HAM radio station (14 fl)

Entrance door to HAM radio station HAM radio station
  1. Wall line hole (inside)
A wall on HAM Radio Station A wall line hole to the outside rooftop
  1. Ethernet connection to infrastructure
One Ethernet port remained
  1. Rack space for IDU, server, and power supplies
Rack for IDU Available rack slot for IDU
  1. Wall line hole (outside)
Outside wall line hole to the HAM radio station Outside wall line hole

6. Indoor installment


  • It is strongly required connecting with `serial cable' between IDU and ASN-GW server because of monitoring purpose.

7. Client Setting

  • Platform: Dell Latitude D830 (IRT0045)
  • NIC: Intel Centrino Advanced-N WiMAX 6250 - Mini-PCI express with half size slot (Note: It fails booting on Thinkpad laptops because of their BIOS allows authorized interfaces only. See for more details.)
  • OS: Ubuntu 10.10 Maverick with patched linux kernel 2.7.36-rc3
  • Others required software (from
    1. NIC firmware: i2400m-fw-1.5.0
    2. Driver:compiled and built by patched linux kernel
    3. WiMAX tool: wimax-tools-1.4.4
    4. Open source supplicant: wpa_supplicant-0.7.2 with patch to build library
    5. WiMAX network service: wimax-1.5.1, Intel's WiMAX daemon

Last updated on Timestamp?

Attachments (30)