Changes between Version 178 and Version 179 of WiMAXInteg


Ignore:
Timestamp:
04/22/10 16:15:44 (11 years ago)
Author:
hmussman@bbn.com
Comment:

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  • WiMAXInteg

    v178 v179  
    277277[[Image(Visio-111309b_WiMAXSystemOverview_Page_2.jpg, 90%)]]  [[BR]]
    278278
    279 In some cases, it should be possible to combine the ASNGW functions into one server, for a WiMAX testbed system configuration that utilizes two servers, per Figure 1-2b).  [[BR]]
     279In some cases, it should be possible to combine the ASN GW functions into one server, for a WiMAX testbed system configuration that utilizes two servers, per Figure 1-2b).  [[BR]]
    280280 ASNGW, that provides all ASN GW functions
    281281 OMF, that provides a full set of OMF/OML functions. [[BR]]
     
    293293
    294294Finally, in many cases, it should be possible to combine all funtions within one server, for a WiMAX testbed system configuration that utilizes one server, per Figure 1-2c).  [[BR]]
    295  ASNGW_OMF that provides all ASN GW and OMF/OML functions. [[BR]]
    296  
    297 This server runs ubuntu Linux, and implements kvm virtualization, with the combined ASN GW (non-virtualized) and OMF/OML functions running in Dom0. Note that this server must have a total of four ethernet ports to provide all of the requirted conenctivity. [[BR]]
    298 
    299 When this configuration uses a high-capacity (i.e., dual-CPU) server, it should have sufficient capacity for most installations.  Thus, it is the configuration that will be used for the initila installations at all campuses/sites.  [[BR]]
     295 ASNGW-OMF that provides all ASN GW and OMF/OML functions. [[BR]]
     296 
     297This server runs ubuntu Linux, and implements kvm virtualization, with the combined ASN GW (non-virtualized) and OMF/OML functions running in Dom0. Note that this server must have a total of four ethernet ports to provide all of the required conenctivity. [[BR]]
     298
     299When this configuration uses a high-capacity (i.e., dual-CPU) server, it should have sufficient capacity for most installations.  Thus, it is the configuration that will be used for the initial installations at all campuses/sites.  [[BR]]
    300300
    301301Later, additonal servers can be added as necessary for capacity.  For example, if specialized functions such as video coding were included in a slice's VM, then additional capacity may be required.[[BR]]
     
    307307=== 6.2  Base Station Hardware  ===
    308308
    309 The NEC BTS base station hardware includes the following units, connected via a dual fiber cable:[[BR]]
    310  *  InDoor Unit (IDU), rack mounted in an equipment room.[[BR]]
    311  *  OutDoor Unit (ODU), bolted to a pole near the antenna, and connected to the antenna via a coax.[[BR]]
    312  
    313 Installation of the BTS base station hardware is described in [http://groups.geni.net/geni/attachment/wiki/WiMAXInteg/CampusInstallation/BS_INSTALLATION.pdf     manual][[BR]]
    314 
    315 
    316 Fig 1-2b)  NEC BTS IDU and ODU Base Station Hardware  [[BR]]
     309The NEC BTS base station hardware includes the following units, ashown in Figure 1-2d:[[BR]]
     310 *  OutDoor Unit (ODU), bolted to a pole near the WiMAX antenna, and connected via a coax to the WiMAX antenna.[[BR]]
     311 *  InDoor Unit (IDU), rack mounted in an equipment room, connected via a dual fiber cable to the ODU.[[BR]]
     312 
     313For installation details, see [http://groups.geni.net/geni/attachment/wiki/WiMAXInteg/CampusInstallation/BS_INSTALLATION.pdf     NEC Installation Manual for Base Station (IMN:BS)][[BR]]
     314
     315
     316Fig 1-2d)  NEC BTS IDU and ODU Base Station Hardware  [[BR]]
    317317[[Image(Visio-111309b_WiMAXSystemOverview_Page_3.jpg, 90%)]]  [[BR]]
    318318
     
    324324 *  [http://www.l-com.com/item.aspx?id=20419  Commercial 2.6GHz 30-degree directional patch antenna], not provided by Rutgers as part of the kit [[BR]]
    325325
    326 Each campus should decide on the appropriate antenna (or antennas);  see Section xx below. [[BR]]
     326Each campus should decide on the appropriate antenna (or antennas), for thier planned experiments and their local topography. [[BR]]
    327327
    328328The antenna must be connected to the NEC ODU using a short length of low-loss cable, with N-type connectors: [[BR]]
     
    330330 *  [http://www.l-com.com/productfamily.aspx?id=6517 LMR-600-series cables with N-type connectors], with 0.44 dB loss for 10 feet;  recommended for long runs [[BR]]
    331331 
    332 Typical cable components:[[BR]]
     332Typical WiMAX cable components are:[[BR]]
    333333 *  [http://www.l-com.com/item.aspx?id=22733  N-male to N-male cable], 2 feet in length.[[BR]]
    334334 *  [http://www.l-com.com/item.aspx?id=26015  N-male to N-male cable], 4 feet in length.[[BR]]
     
    340340It should be possible to include two (or more) antennas, and move the coax cable between antennas to select the antenna in use.  [[BR]]
    341341
     342As an alternative, a coaxial relay switch can be mounted on the roof, and used to remotely select the antenna in use.  [[BR]]
     343
    342344
    343345=== 6.4  GPS Antenna ===
    344346
    345 A GPS antenna assembly is provided, and connected to the IDU, to provide a stable and precise timing source to the base station. [[BR]]
    346 
    347 The antenna assembly is connected to the NEC IDU using a 50-ohm coax, that carries the received signal to the IDU, and power to the antenna assembly.  [[BR]]
    348 
    349 Connectors:[[BR]]
    350  * NEC IDU:  GPS Antenna Terminal (GPS ANT): BNC connector[[BR]]
    351  * GPS antenna:  N, female  (one - bottom fed)[[BR]]
    352 
    353 
    354 The GPS antenna assembly can be mounted in any outdoor location where it can "see" the sky, but we will assume that it is mounted in the same location as the WiMAX antenna.[[BR]]
    355 
    356 
    357 The suggested GPS antenna assembly is the [http://www.antenna.com/apg_products.cgi?id_num=11092  PCTel GPS-TMG-SPS-40NCB]  timing reference antenna.  It provides:[[BR]]
     347A GPS antenna is mounted on the roof and connected to the IDU to provide a stable and precise timing source to the base station. [[BR]]
     348
     349The GPS antenna can be mounted in any outdoor location where it can "see" the sky, but it is typically mounted in the same location as the WiMAX antenna.[[BR]]
     350
     351The suggested GPS antenna is the [http://www.antenna.com/apg_products.cgi?id_num=11092  PCTel GPS-TMG-SPS-40NCB]  timing reference antenna.  It provides:[[BR]]
    358352 * integrated lightning protection  [[BR]]
    359353 * heavy duty mounting clamp[[BR]]
    360354 * amplifier with 40 dB of gain[[BR]]
    361 
    362 The amplifier with 40 dB of gain compensates for loss in the 50-ohm coax cable run from the GPS antenna assembly at outside site, to the IDU at the indoor site.[[BR]]
    363 
    364 The suggested 50-ohm coax cable is [http://www.l-com.com/multimedia/diagrams/D_RG58C-_.JPG  RG58C/U], which has a loss at the GPS frequency of approxiamately 1000MHz of 40 dB for 200 ft of cable.[[BR]]
    365 
    366 Typical cable components:[[BR]]
     355 
     356The GPS antenna is connected to the NEC IDU using a 50-ohm coax, that carries the received signal to the IDU, and power to the antenna assembly.  Connectors are:[[BR]]
     357 * NEC IDU:  GPS Antenna Terminal (GPS ANT): BNC connector[[BR]]
     358 * GPS antenna:  N, female  (one - bottom fed)[[BR]]
     359
     360The suggested 50-ohm coax cable is [http://www.l-com.com/multimedia/diagrams/D_RG58C-_.JPG  RG58C/U], which has a loss at the GPS frequency of approxiamately 1000MHz of 40 dB for 200 ft of cable.  The amplifier with 40 dB of gain compensates for this loss.[[BR]]
     361
     362Typical GPS antenna cable components are:[[BR]]
    367363 *  [http://www.l-com.com/productfamily.aspx?id=70  BNC-male to BNC-male cable], multiple lengths.[[BR]]
    368364 *  [http://www.l-com.com/item.aspx?id=347  BNC-male to BNC-male cable], 200 ft length.[[BR]]