Wiki » History » Version 10
ptrkrysik, 09/06/2018 09:28 AM
Hardware support
| 1 | 2 | ptrkrysik | h1. Welcome to [[SDR PHY for OsmocomBB]] project |
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| 2 | 1 | ptrkrysik | |
| 3 | 9 | ptrkrysik | {{>toc}} |
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| 5 | 1 | ptrkrysik | h2. Introduction |
| 6 | 2 | ptrkrysik | |
| 7 | 7 | ptrkrysik | [[OsmocomBB:]] project provides almost free software GSM mobile station implementation, from Layer 1 to Layer 3. The last non-free parts are: layer 1 and low level signal processing that are implemented in a non-free DSP software which is inside of the hardware platform that [[OsmocomBB:]] is currently based on (mainly reverse engineered [[OsmocomBB:TI_Calypso_Chipset|Calypso]] based mobile phones). |
| 8 | 2 | ptrkrysik | |
| 9 | 7 | ptrkrysik | The [[SDR PHY for OsmocomBB]] aims to replace these non-free parts through use Software Defined Radio devices and by creating missing software part for tasks such as scheduling, voice encoding/decoding, channel encoding/decoding, burst modulation/demodulation and controlling SDR hardware. In order to achieve this goal the [[SDR PHY for OsmocomBB]] brings together [[OsmocomBB:]] and [[gr-gsm:]] projects, where the role of [[gr-gsm:]] is to provide GSM bursts transmission and reception with everything starting from channel coding/decoding being done in [[OsmocomBB:]]. |
| 10 | 1 | ptrkrysik | |
| 11 | 7 | ptrkrysik | Having support for general purpose SDR hardware has additional advantage of not being locked to a single and already obsolete hardware platform. Adding support for a new well documented SDR platform is significantly easier than reverse-engineering mobile phone's hardware and software. This could sustain [[OsmocomBB:]] project's life even in the absence of hacked mobile phones it is able to run on. |
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| 13 | 8 | ptrkrysik | A comparison of [[OsmocomBB:TI_Calypso_Chipset|Calypso]] based and SDR based approaches can be found on [[SDR PHY vs Calypso]] subpage. |
| 14 | 3 | ptrkrysik | |
| 15 | 10 | ptrkrysik | h2. Supported SDR hardware |
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| 17 | At the moment only USRP hardware is supported via UHD driver. This limitation is caused by the requirement for the stream tags support by a GNU Radio interface of the SDR device. Currently only UHD USRP source/sink blocks provide that. |
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| 19 | The current implementation is known to work on the following devices: |
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| 21 | * USRP B2X0, including 'mini' |
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| 22 | * Fairwaves [[UmTRX:]] |
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| 24 | Note: *LimeSDR is not (yet?) supported* exactly because the stream tags are not supported by "_gr-limesdr_":https://github.com/myriadrf/gr-limesdr. |
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| 26 | 3 | ptrkrysik | h2. Project status |
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| 28 | Known limitations (not implemented): |
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| 30 | * Automatic PHY delay measurement |
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| 31 | * AGC (Automatic Gain Control) |
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| 32 | * Power measurement |
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| 33 | |||
| 34 | Work in progress: |
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| 36 | * Docker scripts (Dockerfiles) |
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| 37 | * GAPK based audio back-end |
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| 38 | * TCH/H implementation |
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| 39 | * Frequency Hopping |
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| 40 | |||
| 41 | Future plans: |
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| 43 | * Extend supported hardware list (Soapy?) |
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| 44 | * PC/SC physical SIM interface |
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| 45 | * AMR (Adaptive Multi-Rate) |
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| 47 | 5 | ptrkrysik | h2. Sponsors |
| 48 | 3 | ptrkrysik | |
| 49 | 4 | ptrkrysik | The "project":https://nlnet.nl/project/sdr-phy/ has support of NLnet Foundation |
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| 51 | !https://osmocom.org/attachments/download/3315/nlnet_logo_320x120.png(fsdafs)!:https://nlnet.nl. |
