Changes between Version 154 and Version 155 of WiMAXInteg

Timestamp:

04/01/10 15:53:17 (14 years ago)

Author:

hmussman@bbn.com

Comment:

--

WiMAXInteg

@@ -256 +256 @@
 === 6.1  Configuration ===
 
-Fig 1-2a)  Hardware and Networking  [[BR]]
+Fig 1-2a)  System Configuration with Three Servers  [[BR]]
 [[Image(Visio-111309b_WiMAXSystemOverview_Page_2.jpg, 90%)]]  [[BR]]
 
-Figure 1-2a) shows the full configuration with three servers: [[BR]]
+Figure 1-2a) shows the system configuration with three servers: [[BR]]
  ASNGW-03, that provides combined ASN GW functions. [[BR]]
  ASNGW-02, that provides virtualized ASN GW functions, for separate slices. [[BR]]
@@ -269 +269 @@
  Polytechnic Institute of NYU[[BR]]
  
-For the initial bringup, it should be possible to load all functions into one server.[[BR]]
-
-Issue:  Are there campuses that can complete their expected experiments operating with only one server?  two servers?
+In 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]]
+
+Fig 1-2b)  System Configuration with Two Servers  [[BR]]
+[[Image(Visio-111309b_WiMAXSystemOverview_Page_2.jpg, 90%)]]  [[BR]]
+
 
 
 === 6.2  Base Station Hardware  ===
 
-Fig 1-2b)  NEC BTS IDU, ODU and Antenna  [[BR]]
+Fig 1-2b)  NEC BTS IDU and ODU Base Station Hardware  [[BR]]
 [[Image(Visio-111309b_WiMAXSystemOverview_Page_3.jpg, 90%)]]  [[BR]]
 
 === 6.3  WiMAX Antenna ===
 
-Ivan on 3/16:  NEC antenna in kit is 120 degree antenna, intended to cover one sector.  [[BR]] 
-If campus prefers 360 degree, omni-direcitonal antenna, needs to purchase separetely.  [[BR]] 
-NOTE:  Preference for each campus shown below.  [[BR]] 
-ISSUE:  Provide spec for uni-direcitonal antenna  [[BR]] 
+There are two types of nominal 2.5GHz WiMAX antennas that may be installed at the site: [[BR]]
+ *  NEC 120-degree sector antenna, provided by Rutgers as part of the kit [[BR]]
+ *  Commercial 360-degree omni-directional antenna, not provided by Rutgers as part of the kit [[BR]]
+
+Two sources have been identified for a 2.5GHz WiMAX 360-degree omni-directional antenna: [[BR]]
+ *  [http://www.l-com.com/item.aspx?id=20808  info] [[BR]]
+ *  [http://www.wpsantennas.com/zdaqj2600-10-clear-sprint-xohm-wimax-omni-directional-antenna.aspx  info] [[BR]]
+
+Each campus should decide on the appropriate antenna;  see Section xx below. [[BR]]
+
+The antenna must be connected to the NEC ODU using a short length of low-loss cable, with N-type connectors: [[BR]]
+ *  LMR-400 up to 6 ft. [[BR]]
+ *  LMR-600 greater than 6 ft. [[BR]]
+ 
+Note that the loss in the cable can have a significant impact on range. [[BR]]
+Check [http://www.l-com.com/category.aspx?id=15 info] for cables with connectors [[BR]]
+
+It may be possible to include two antennas, with a manual or electronically-controlled coaxial switch.  UNDER STUDY [[BR]]
+
 
 === 6.4  GPS Antenna ===
@@ -291 +308 @@
 Candidate is [http://www.antenna.com/apg_products.cgi?id_num=11092  PCTel GPS-TMG-SP-40NGPS]  timing reference antenna, with integrated lightning protection  [[BR]]
 ISSUE:  Pick antenna with appropriate gain, and coax cable with appropriate attenuation.  [[BR]] 
+
+
+
+The 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: 
+
+  http://www.l-com.com/category.aspx?id=15
+
+Ivan.
+
+-----Original Message-----
+From: Harry Mussman [mailto:hmussman@bbn.com] 
+Sent: Wednesday, March 31, 2010 11:37 AM
+To: 'michel,tony'; Ivan Seskar
+Cc: 'Harry Mussman'
+Subject: gps antenna and cable
+
+Tony and Ivan,
+
+I am updating the wiki, and am looking for:
+
+
+1)  gps antenna spec.  
+
+Per Ivan earlier, a good one is attached.
+
+Which mounting hardware?  Heavy duty?
+
+
+
+2)  gps antenna coax cable
+
+Assume:  up to 100m, like fiber?
+
+Overall loss budget:
+
+        Output from antenna?
+
+        Input range to NEC ODU?
+
+        What coax, loss?
+
+
+Connectors:
+
+NEC IDU:  GPS Antenna Terminal (GPS ANT): BNC connector
+
+GPS antenna:  N, female  (one - bottom fed)
+
+
+Can we find a place that supplies cable with connectors?
+
 
 === 6.5  -48VDC Power  ===