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OsmoSGSN » History » Revision 7

Revision 6 (laforge, 02/19/2016 10:48 PM) → Revision 7/28 (laforge, 02/19/2016 10:48 PM)

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 h1. [[OsmoSGSN]] 


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 = OsmoSGSN = 

 OsmoSGSN (also spelled {{{osmo-sgsn}}} when referring to the program name) is a Free Software implementation of the GPRS 
 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 [[osmo-pcu]] [wiki:osmo-pcu] or an ip.access nanoBTS), and it connects via the GTP protocol 
 to a Gateway GPRS Support Node (GGSN) like [[OpenGGSN]]. [wiki:OpenGGSN]. 

 [[OsmoSGSN]] OsmoSGSN is part of the openbsc git repository.    In order to build it, you will need a libgtp installation from the 
 [[OpenGGSN]] OpenGGSN project.   


 h2.   

 == Setup / Configuration 

 == 
 For more information regarding the setup + configuration, refer to [[OpenBSC_GPRS]] 



 h2. [wiki:OpenBSC_GPRS] 


 == TODO list 

 == 
  * use the [[OsmoNITB]] OsmoNITB HLR to identify (and possibly authenticate) subscribers 
 
  * secondary PDP contexts 
 
  * persistent storage of GMM and SM state 
 
  * recovery from GGSN outages 
 
  * SNDCP header and data compression 
 
  * use proper XID exchange and actually use the results to configure the LLC SAPIs 
 
  * GEA3 encryption 
 
  * SMS delivery via GPRS 
 
  * network-initiated PDP context activation 
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