From f03add3640f27a7759cf8eebb876403f10758d15 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Fri, 13 Apr 2018 15:30:15 +0200 Subject: osmodevcon rbs6k initial version --- .../osmodevcon2018-rbs6xxx.html | 4353 ++++++++++++++++++++ 1 file changed, 4353 insertions(+) create mode 100644 2018/osmodevcon2018-rbs6xxx/osmodevcon2018-rbs6xxx.html (limited to '2018/osmodevcon2018-rbs6xxx/osmodevcon2018-rbs6xxx.html') diff --git a/2018/osmodevcon2018-rbs6xxx/osmodevcon2018-rbs6xxx.html b/2018/osmodevcon2018-rbs6xxx/osmodevcon2018-rbs6xxx.html new file mode 100644 index 0000000..11e3984 --- /dev/null +++ b/2018/osmodevcon2018-rbs6xxx/osmodevcon2018-rbs6xxx.html @@ -0,0 +1,4353 @@ + + + + +Ericsson RBS6000 Series + + + + + + + + +
+

Ericsson RBS 6000 Series

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+
    +
  • + +very popular series of Radio Base Stations (RBS) during last decade + +
    • +
  • + +supports many different configurations built from various modules + +
      +
    • + +Digital Units (DU) + +
      • +
    • + +Radio Units (DU) + +
      • +
    • + +miscellaneous bits like shelves / racks, fans, fuses, OVP, cables, PSU, … + +
      • +
    +
    • +
  • + +supports both + +
      +
    • + +classic BTS cabinets with radio + +
      • +
    • + +remote (tower mounted) radio heads + +
      • +
    +
    • +
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+

RBS 6000 Series Overview

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+rbs6k-intro.png +
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Think of it as "Lego"

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+rbs6k-lego.png +
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Example: RBS6201 Rack

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+rbs6201-rack.png +
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Example: RBS6201 Shelf

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Example shelf with 6x radio unit and 1x WCDMA digital unit

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+rbs6201-shelf.png +
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GSM: DUG 10 + RUG

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+
    +
  • + +first generation GSM modules for RBS6000 + +
    • +
  • + +closely resembles RBS2000 architecture + +
      +
    • + +DUG 10 like RBS2000 IXU/DXU + +
      • +
    • + +RUG like RBS2000 RRU: TRX + +
      • +
    +
    • +
  • + +interconnection between DUG 10 + RUG is still TDM, not baseband samples! + +
    • +
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Digital Unit GSM DUG 10

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+
    +
  • + +up to 12 TRX, grouped in 1..6 logical BTS + +
    • +
  • + +matches most closely IXU or DXU of previous RBS2xxx series + +
    • +
  • + +no baseband processing inside, just protocol logic (LAPDm + RSL + OM2000) + +
    • +
  • + +6x HSIO connector for interface towards RUG + +
    • +
  • + +4x E1/T1 ports exposed on RJ45 connectors + +
    • +
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Radio Unit GSM DUG

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+
    +
  • + +GSM only + +
    • +
  • + +2 TRX in hardware + +
      +
    • + +any of them can be GSM, WCDMA or LTE + +
      • +
    +
    • +
  • + +48W per TRX un-combined + +
    • +
  • + +22W per TRX combined (internal hybrid combiner) + +
    • +
+
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+dug.png +
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GSM: DUG 20 + RUS

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+
    +
  • + +second generation GSM modules for RBS6000 + +
    • +
  • + +more closely resembles the UMTS + LTE modules + +
    • +
  • + +all baseband processing in DUG 20 + +
      +
    • + +digital baseband I/Q samples between DUG 20 and RUS + +
      • +
    +
    • +
  • + +interconnection uses CPRI (Common Public Radio Interface) + +
    • +
  • + +connectors typically SFP format. + +
      +
    • + +can be used with SFP optics + fiber (many km long) + +
      • +
    • + +can be used with direct copper SFP interconnect cables (few m) + +
      • +
    +
    • +
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Digital Unit GSM DUG 20

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+
    +
  • + +up to 12 TRX, gruoped in 1..6 logical BTS + +
    • +
  • + +includes baseband processing, unlike DUG 10 + +
    • +
  • + +6 SFP slots with CPRI towards Radio Units (RUS) + +
    • +
  • + +4x E1/T1/J1 ports exposed on two RJ45 connectors + +
    • +
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Radio Unit Mulit-Standard RUS 01

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+
    +
  • + +GSM WCDMA and LTE + +
    • +
  • + +4 carriers over 20 MHz IBW + +
      +
    • + +any of them can be GSM, WCDMA or LTE + +
      • +
    +
    • +
  • + +up to 1x 80W (one multi-channel PA) + +
      +
    • + +20W without special license key + +
      • +
    • + +up to 80W with license keys + +
      • +
    +
    • +
+
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+rus.png +
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    +
  • + +RUS 02 has 40 MHz IBW + +
      +
    • + +up to 8 GSM carriers + +
      • +
    • + +up to 4 WCDMA or LTE carriers + +
      • +
    +
    • +
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UMTS: DUW + RUS

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    +
  • + +DUW is Digital Unit WCDMA + +
    • +
  • + +is used with RUS or RRUS (like DUG 20) + +
    • +
  • + +offers Iub interface to RNC + +
    • +
  • + +no FOSS RNC, so not very interesting :( + +
    • +
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LTE: DUL + RUS

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    +
  • + +DUL is Digital Unit LTE + +
    • +
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Combined UMTS + GSM setup (classic approach)

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+1ru_per_sector_rbb12_1a.png +
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    +
  • + +works the same way with DUL + DUG for LTE + GSM + +
    • +
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Combined UMTS + GSM setup (classic approach)

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+
+
+2ru_per_sector_rbb22_2b.png +
+
+
    +
  • + +works the same way with DUL + DUG for LTE + GSM + +
    • +
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+

GSM/UMTS/LTE in one: DUS 31 / 41

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+
    +
  • + +DUS are multi-standard DU (GSM/UMTS/LTE) + +
    • +
  • + +DUS 31 capacity up to 24 GSM TRX + +
      +
    • + +or up to 12 GSM TRX combined with LTE + +
      • +
    +
    • +
  • + +DUS 41 capacity up to 48 GSM TRX + +
      +
    • + +or up to 12 GSM TRX combined with LTE + +
      • +
    +
    • +
  • + +Back-haul is Ethernet only, no E1/T1/J1 anymore + +
      +
    • + +it is presumed that it’s like an internal software-only SIU-02 + +
      • +
    +
    • +
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+dus4101.png +
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Ericsson + Osmocom

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We do have some history of RBS2000 support

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    +
  • + +OsmoNITB has OM2000 implementation proven with RBS2000 + +
    • +
  • + +OsmoBSC inherits that, but breaks voice (no E1 in osmo-mgw yet) + +
    • +
  • + +OsmoBSC has pcu_sock interface for BSC-colocated PCU + +
    • +
  • + +Adding E1/TDM user plane support to osmo-mgw would enable using Ericsson RBS again + +
    • +
  • + +All that’s missing for low-cost macro BTS with Osmocm is an inexpensive E1 interface + +
      +
    • + +see separate talk + +
      • +
    +
    • +
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+

EOF

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End of File

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