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OsmoSGSN » History » Revision 17

Revision 16 (laforge, 09/06/2017 11:47 AM) → Revision 17/28 (laforge, 10/21/2017 06:15 PM)

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 h1. [[OsmoSGSN:]] 

 Contact us via the osmocom-net-gprs@ mailing list, see [[Cellular Infrastructure:Mailing Lists]]. 
 Contributions are welcome via [[Cellular Infrastructure:Gerrit]]. 
 Git repository browser at https://git.osmocom.org/osmo-sgsn 

 Serving GPRS Support Node (SGSN).    As such it implements the GPRS Mobility Management (GMM) and SM (Session Management). 

 The SGSN connects via the Gb-Interface to the BSS (like the [[OsmoPCU:]] or an ip.access [[OpenBSC:nanoBTS]]), and it connects via the GTP protocol 
 to a Gateway GPRS Support Node (GGSN) like [[OpenGGSN:OsmoGGSN]]. 

 [[OsmoSGSN:]] is available from the http://git.osmocom.org/osmo-sgsn/ repository.    In order to build it, you will need a libgtp installation from the 
 [[OpenGGSN:OsmoGGSN]] project.   

 h2. Position in a typical Osmocom network 

 {{graphviz_link() 
 digraph G { 
     rankdir = LR; 
     OsmoBTS -> OsmoBSC [label="Abis/IP"]; 
     OsmoBSC -> OsmoMSC [label="3GPP AoIP"]; 
     OsmoBTS -> OsmoPCU [label="pcu_sock"]; 
     OsmoPCU -> OsmoSGSN [label="Gb/IP"]; 
     OsmoMSC -> OsmoHLR [label="GSUP"]; 
     OsmoSGSN -> OsmoHLR [label="GSUP"]; 
     hNodeB -> OsmoHNBGW [label="Iuh"]; 
     OsmoHNBGW -> OsmoMSC [label="IuCS"]; 
     OsmoHNBGW -> OsmoSGSN [label="IuPS"]; 
     OsmoSGSN -> OsmoGGSN [label="Gp"]; 
     OsmoGGSN -> Internet [label="Gi"]; 
     OsmoSGSN [color=red]; 
 } 
 }} 


   


 h2. Setup / Configuration 

 For more information regarding the setup + configuration, refer to [[cellular-infrastructure:OpenBSC_GPRS]] 

 h2. Manuals 

 * User Manual: http://ftp.osmocom.org/docs/latest/osmosgsn-usermanual.pdf 
 * VTY Reference: http://ftp.osmocom.org/docs/latest/osmosgsn-vty-reference.pdf 

 h2. TODO list 

 * secondary PDP contexts 
 * persistent storage of GMM and SM state 
 * recovery from GGSN outages 
 * SMS delivery via GPRS 
 * network-initiated PDP context activation
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