wiki:WIMXCOLUM/CUWIMAX

Version 24 (modified by SungHoon Seo, 9 years ago) (diff)

indoor installation

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 mask and ODU on outdoor site
  2. Request permission from Dean's office, facilities, and real-estate committee
  3. Preliminary base station testing with Wi-Fi antenna by using signal power attenuator (it should be set with reduced (lowest) TX power 0 dBm) See Section 7. Indoor testing for more details.
  4. Purchase additional necessary items
  5. Ethernet activation (1402B) when all equipments are ready via Patrick (CUIT staff)
  6. Check rack space (smaller size) for IDU and ASN-GW

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
  8. Complete setting of client testbed platform on Oct 29, 2010
  9. Meeting with Facilities on Nov 29, 2010
    • At CS office: an additional committe (real-estate) admission required.
  10. Site survery for a new outdoor site (indoor site as well) on 09, 2010
    • At Fairchild and Mudd building: Site change is necessary.
  11. Meeting with electrician for the antenna mount on Dec 16, 2010
    • At Mudd 14fl and IRT

4. Campus WiMAX radio coverage map (expected)

a. 2D map view (by Google map) b. Aerial view (by Bing map)
ThumbImage(coverage_map.png)? ThumbImage(coverage_aerial.jpg, thumb=450)?

5. Conceptual diagram for deployment

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

6. Site survey

Becuase of the various reaons, on Dec. 16 2010, we decide to change the outdoor and indoor sites to the southwest corner of Mudd building, 14 fl, rooftop.

New outdoor site at Mudd 14th floor

a. Wide view b. front view c. SW corner d. side view e. detail
ThumbImage(site1.JPG, thumb=200)? ThumbImage(wall3.jpg, thumb=200)? ThumbImage(wall4.jpg, thumb=200)? ThumbImage(wall1.jpg, thumb=200)? ThumbImage(wall2.jpg, thumb=200)?


line-of-sight view 1 LOS view 2
ThumbImage(los1.jpg, thumb=350)? ThumbImage(los2.jpg, thumb=350)?

New Indoor site at Mudd 14th floor (neer outdoor site, same level)

ThumbImage(rack_space.jpg, thumb=200)?
  • Need to check the space availabilitye: 5U + pwr suplies.

See Old outdoor/indoor sites.

7. Indoor testing

This section describes a note for the purpose of preliminary base station test at indoor environment.

Important notes

  • It is strongly recommended that connecting to the IDU (CHC's serial port) is allowed through `serial cable' by using any model control application (e.g., minicom) for the monitoring purpose. However, it can be substituted with ssh connection.
  • Preliminary base station testing with the sector-antenna: Signal power attenuator should be located between ODU and the antenna (bs_tx_power should be set in 0 dBm)

Testing topology

  1. ASN-GW
    • eth0: 10.41.0.3/16 -> connected to the monitoring console machine
    • eth1: 10.3.6.254/24 -> connected to the IDU
    • eth2: dhclient -> connected to the CU networks
  2. IDU
    1. CHC: 10.3.6.1/24
    2. NW INTFC: 10.3.6.2/24
  3. Monitoring console machine
    • eth0: 10.41.0.111/16 -> directly connected to the eth0@ASN-GW

Booting up sequence

First time, whenever we tried to boot up the ASN-GW server, IDU, and ODU, NW INTFC and CHC at IDU indicated that several warning and alram lights was turning on.

a. ALM light (red) at NW INTFC: It's occurred by GPS.
b. WARN light (orange) at NW INTFC: It indicates that "Real time clock seems stuck!" which is caused from time sync issues because GPS receiver is not connected at this time of testing.
c. ODU ALM light (red) at CHC: Setting up ODU fails.
d. ODU LINK light (green) at CHC: When it's on, it means the connection between IDU and ODU is successfully established.

We found that there is a turn-on sequence for these machines to work properly, which is as follows:

  1. Turn on the power of ASN-GW server
    • Send ping to 10.41.0.3 (IP address of ASN-GW) from monitoring console to check the server alive.
    • ssh 10.41.0.3
  2. Turn on the power of NW INTFC
    • Send ping to 10.3.6.2 (IP address of NW INTFC) from a console at ASN-GW to check the NW INTFC alive.
    • telnet 10.3.6.2
  3. Turn on the power of CHC
    • Send ping to 10.3.6.1 (Ip address of CHC) from a console at ASN-GW to check the CHC alive.
    • telnet 10.3.6.1
  4. Restart the asn-gw module at a console of ASN-GW
    • sudo /usr/bin/asn-gw stop
    • sudo /usr/bin/asn-gw start this command will reboot the CHC (internally bs_restart is called)
    • Wait until CHC is ready by sending ping to the 10.3.6.1 (IP address of CHC)
    • Check the ODU LINK light on at the CHC panel!!
  5. For the logging information, manually synchronize the time between machines.
    • We turn on ntpd at asn-gw for the testing purpose
    • ntpdate 10.3.6.254 (IP address of the ASN-GW)
    • export TZ=EST
    • NOTE: At CHC, TZ variable is automatically recovered to the JST.

Testing

  • Scanning test (02/10/11)
    • As soon as we checked the BTS works properly, we did a wide range of test for scanning procedures from linux based WiMAX client, but failed to see the GENI id'ed base station (NSP=51).

8. Client Setting

  • Platform: Dell Latitude D830 (IRT0045)
  • NIC: Intel Centrino Advanced-N WiMAX 6250 - Mini-PCI express with half size slot
  • OS: Ubuntu 10.10 Maverick with patched linux kernel 2.7.36-rc3

NIC installation

See network interface card installation for more detail.

Software installation

  • Required software (from http://linuxwimax.org)
    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 libeap.so library
    5. WiMAX network service: wimax-1.5.1, Intel's WiMAX daemon
  • History
    1. Initial compilation and installation (10/28/10)
      • It seems like working properly.
    2. NSP definition does not detect the geni NSP id 51 (01/07/11)
      • This issue has been discussed on linuxwimax.org mailing list
    3. Patch for GENI NSP ID '51' (02/02/11)
      • Update WPA supplicant (wpa_supplicant-0.7.3 + wpa_supplicant-0.7.3-generate-libeap-peer.patch
      • Replace XML file on wimax-1.5.1 (append geni NSP into ~/InfraStack/OSAgnostic/WiMax/Agents/NDnS/XML_Files/NDnSAgentConfig_forDriver.xml)
        • Note: Don't miss running ldconfig after the compilation completes.
      • Replace GENI definition and database files (WiMAX_Def.bin and WiMAX_DEF.bin obtained from orbit-lab) on ~/InfraStack/OSAgnostic/Product/AppSrvInfra)
        • Installation completed and checked working properly
        • Note: The file of /var/lib/wimax/WiMAX_DB.bin is changed whenever performing 'wimaxcu scan'

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