OsmoSGSN » History » Version 6
laforge, 02/19/2016 10:48 PM
| 1 | 1 | laforge | [[PageOutline]] |
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| 2 | = OsmoSGSN = |
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| 4 | OsmoSGSN (also spelled {{{osmo-sgsn}}} when referring to the program name) is a Free Software implementation of the GPRS |
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| 5 | Serving GPRS Support Node (SGSN). As such it implements the GPRS Mobility Management (GMM) and SM (Session Management). |
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| 7 | 6 | laforge | The SGSN connects via the Gb-Interface to the BSS (like the [wiki:osmo-pcu] or an ip.access nanoBTS), and it connects via the GTP protocol |
| 8 | 1 | laforge | to a Gateway GPRS Support Node (GGSN) like [wiki:OpenGGSN]. |
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| 10 | OsmoSGSN is part of the openbsc git repository. In order to build it, you will need a libgtp installation from the |
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| 11 | 3 | laforge | OpenGGSN project. |
| 12 | 1 | laforge | |
| 13 | == Setup / Configuration == |
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| 14 | 3 | laforge | For more information regarding the setup + configuration, refer to [wiki:OpenBSC_GPRS] |
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| 16 | 4 | laforge | |
| 17 | 2 | laforge | == TODO list == |
| 18 | 6 | laforge | * use the OsmoNITB HLR to identify (and possibly authenticate) subscribers |
| 19 | 2 | laforge | * secondary PDP contexts |
| 20 | * persistent storage of GMM and SM state |
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| 21 | * recovery from GGSN outages |
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| 22 | * SNDCP header and data compression |
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| 23 | * use proper XID exchange and actually use the results to configure the LLC SAPIs |
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| 24 | * GEA3 encryption |
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| 25 | * SMS delivery via GPRS |
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| 26 | * network-initiated PDP context activation |
