119 lines
3.3 KiB
Plaintext
119 lines
3.3 KiB
Plaintext
Osmocom BTS Hardware Support
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============================
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:author: Harald Welte <hwelte@sysmocom.de>
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:copyright: 2017 by Harald Welte (License: CC-BY-SA)
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:backend: slidy
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:max-width: 45em
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== Overview
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[graphviz]
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----
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include::osmocom_ran_options.dot[]
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----
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== Clasic E1/T1 based BTS
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Supported Vendors/Dialects
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* Siemens (only BS-11 tested)
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* Ericsson RBS2xxx (RBS2307, 2308, 2111 tested)
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* Nokia InSite, MetroSite
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[options="header"]
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|===
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|Pro|Con
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|available inexpensively from decomissioned sites | appears a bit antiquated
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|up to 12 TRX | not many people familiar with E1/T1 anymore
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|high RF output power | no convenient testing/debugging of E1/T1 issues
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|rugged mechanical build, high MTTF | high power consumption
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| | older models no EGPRS, no AMR
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|===
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== Classic E1/T1 based BTS
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image::images/har2009-bs11_at_tree.jpg[width="80%"]
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== Clasic E1/T1 based BTS
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image::images/har2009-bs11_antennas2.small.jpg[width="50%",role="gimmick_right"]
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* This is how it all started
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* E1 based BTS (Siemens BS-11)
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* HAR 2009 - Dutch Hacker Camp
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* Antennas mounted with duct tape to tree
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* E1 back-haul over CAT5 to OpenBSC running in tent
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== Ericsson RBS 2308
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image::images/rbs2308.jpg[width="60%",role="gimmick_right"]
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* Many RBS2000 models
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* All very similar on protocol
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* Not all models tested
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* Good results with RBS2308 + RBS2111
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== ip.access nanoBTS
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image::images/nanoBTS_small.png[width="40%",role="gimmick_right"]
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* PoE-enabled single-TRX 200mW indoor BTS
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* GPRS/GSM only models and EGPRS-enabled models
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* available in band-specific versions for all four bands
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* proprietary BTS and PCU inside
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** lots of PCU crashes reported by users :(
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** no way for us to fix it
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* No fully dynamic channels (TCH/F + TCH/H + PDCH)
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== sysmoBTS
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image::images/symoBTS_v2D_front_1024.jpg[width="35%",role="gimmick_right"]
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* sysmocom builds family of GSM BTS based on OsmoBTS + OsmoPCU
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* revenue from this sales used to cross-subsidize OsmoBTS development
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* *osmo-bts-sysmo* uses shared-memory /dev to talk to PHY
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* *osmo-pcu* uses shared-memory /dev to talk to PHY
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[options="header",cols="2,1,1,1,1,1"]
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|===
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|Model | RF Pwr |TRX|Outdoor|PoE | Quad-Band
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|sysmoBTS 1002 | 0.2 W | 1 | No | No | Yes
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|sysmoBTS 1002 OD | 0.2 W | 1 | Yes | Yes | Yes
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|sysmoBTS 1020 | 2.0 W | 1 | Yes | Yes | No
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|sysmoBTS 1100 | 10.0 W | 1 | Yes | No | No
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|sysmoBTS 2050 | 2x 5 W | 2 | Yes | No | No
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|sysmoBTS 2100 | 2x10 W | 2 | Yes | No | No
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|===
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== Nuran LiteCell 1.5
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image::images/litecell15.jpg[width="40%",role="gimmick_right"]
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* 10W 2-TRX Outdoor BTS
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* *osmo-bts-litecell15* uses shared-memory /dev to talk to PHY
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* *osmo-pcu* uses shared-memory /dev to talk to PHY
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== Octasic OCTBTS with OCTPHY-2G
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image::images/octbts_3600_photo__large.png[width="40%",role="gimmick_right"]
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* not a ready-to-deploy BTS product, more a BTS development board
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** no enclosure, no PA, no filters
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* proprietary PHY runs in Octasic DSP
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** raw Ethernet frames towards *osmo-bts-octphy*
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** unix domain pcu-socket to *osmo-pcu*
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* series of different board models (3000, 3500, 3600) with different
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number of DSPs, radio interfaces, ARM/x86 processor core
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* two TRX per DSP possible
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* not all voice codecs supported
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* EGRPS integration with OsmoPCU not working yet
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== EOF
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End of File
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