Changes between Version 154 and Version 155 of WiMAXInteg


Ignore:
Timestamp:
04/01/10 15:53:17 (10 years ago)
Author:
hmussman@bbn.com
Comment:

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  • WiMAXInteg

    v154 v155  
    256256=== 6.1  Configuration ===
    257257
    258 Fig 1-2a)  Hardware and Networking  [[BR]]
     258Fig 1-2a)  System Configuration with Three Servers  [[BR]]
    259259[[Image(Visio-111309b_WiMAXSystemOverview_Page_2.jpg, 90%)]]  [[BR]]
    260260
    261 Figure 1-2a) shows the full configuration with three servers: [[BR]]
     261Figure 1-2a) shows the system configuration with three servers: [[BR]]
    262262 ASNGW-03, that provides combined ASN GW functions. [[BR]]
    263263 ASNGW-02, that provides virtualized ASN GW functions, for separate slices. [[BR]]
     
    269269 Polytechnic Institute of NYU[[BR]]
    270270 
    271 For the initial bringup, it should be possible to load all functions into one server.[[BR]]
    272 
    273 Issue:  Are there campuses that can complete their expected experiments operating with only one server?  two servers?
     271In many cases, it should be possible to combine the ASNGW functions into one server, for a total of two servers;  see Figure 1-2b.  [[BR]]
     272
     273Fig 1-2b)  System Configuration with Two Servers  [[BR]]
     274[[Image(Visio-111309b_WiMAXSystemOverview_Page_2.jpg, 90%)]]  [[BR]]
     275
    274276
    275277
    276278=== 6.2  Base Station Hardware  ===
    277279
    278 Fig 1-2b)  NEC BTS IDU, ODU and Antenna  [[BR]]
     280Fig 1-2b)  NEC BTS IDU and ODU Base Station Hardware  [[BR]]
    279281[[Image(Visio-111309b_WiMAXSystemOverview_Page_3.jpg, 90%)]]  [[BR]]
    280282
    281283=== 6.3  WiMAX Antenna ===
    282284
    283 Ivan on 3/16:  NEC antenna in kit is 120 degree antenna, intended to cover one sector.  [[BR]]
    284 If campus prefers 360 degree, omni-direcitonal antenna, needs to purchase separetely.  [[BR]]
    285 NOTE:  Preference for each campus shown below.  [[BR]]
    286 ISSUE:  Provide spec for uni-direcitonal antenna  [[BR]]
     285There are two types of nominal 2.5GHz WiMAX antennas that may be installed at the site: [[BR]]
     286 *  NEC 120-degree sector antenna, provided by Rutgers as part of the kit [[BR]]
     287 *  Commercial 360-degree omni-directional antenna, not provided by Rutgers as part of the kit [[BR]]
     288
     289Two sources have been identified for a 2.5GHz WiMAX 360-degree omni-directional antenna: [[BR]]
     290 *  [http://www.l-com.com/item.aspx?id=20808  info] [[BR]]
     291 *  [http://www.wpsantennas.com/zdaqj2600-10-clear-sprint-xohm-wimax-omni-directional-antenna.aspx  info] [[BR]]
     292
     293Each campus should decide on the appropriate antenna;  see Section xx below. [[BR]]
     294
     295The antenna must be connected to the NEC ODU using a short length of low-loss cable, with N-type connectors: [[BR]]
     296 *  LMR-400 up to 6 ft. [[BR]]
     297 *  LMR-600 greater than 6 ft. [[BR]]
     298 
     299Note that the loss in the cable can have a significant impact on range. [[BR]]
     300Check [http://www.l-com.com/category.aspx?id=15 info] for cables with connectors [[BR]]
     301
     302It may be possible to include two antennas, with a manual or electronically-controlled coaxial switch.  UNDER STUDY [[BR]]
     303
    287304
    288305=== 6.4  GPS Antenna ===
     
    291308Candidate is [http://www.antenna.com/apg_products.cgi?id_num=11092  PCTel GPS-TMG-SP-40NGPS]  timing reference antenna, with integrated lightning protection  [[BR]]
    292309ISSUE:  Pick antenna with appropriate gain, and coax cable with appropriate attenuation.  [[BR]]
     310
     311
     312
     313The same antenna/mounting combo comes with 10, 20 and 40 dB of gain (the only issue is possible ringing with high gains so for cases where there is less than 50m of cable we should go with 10 or 20 dB max). I would definitely go for heavy duty mounting (like this one because it has built-in arrester so that all we need is a proper grounding which presumably already exist for the main antenna). As for what cable and where to get them, there are quite a few outfits; for example the site for WiMAX antenna:
     314
     315  http://www.l-com.com/category.aspx?id=15
     316
     317Ivan.
     318
     319-----Original Message-----
     320From: Harry Mussman [mailto:hmussman@bbn.com]
     321Sent: Wednesday, March 31, 2010 11:37 AM
     322To: 'michel,tony'; Ivan Seskar
     323Cc: 'Harry Mussman'
     324Subject: gps antenna and cable
     325
     326Tony and Ivan,
     327
     328I am updating the wiki, and am looking for:
     329
     330
     3311)  gps antenna spec. 
     332
     333Per Ivan earlier, a good one is attached.
     334
     335Which mounting hardware?  Heavy duty?
     336
     337
     338
     3392)  gps antenna coax cable
     340
     341Assume:  up to 100m, like fiber?
     342
     343Overall loss budget:
     344
     345        Output from antenna?
     346
     347        Input range to NEC ODU?
     348
     349        What coax, loss?
     350
     351
     352Connectors:
     353
     354NEC IDU:  GPS Antenna Terminal (GPS ANT): BNC connector
     355
     356GPS antenna:  N, female  (one - bottom fed)
     357
     358
     359Can we find a place that supplies cable with connectors?
     360
    293361
    294362=== 6.5  -48VDC Power  ===