Cellular Network Infrastructure » OsmoSMLC

OsmoSMLC » History » Revision 7

Revision 6 (laforge, 07/25/2022 06:55 AM) → Revision 7/9 (laforge, 07/25/2022 06:56 AM)

h1. OsmoSMLC 

 OsmoSMLC is the Osmocom Serving Mobile Location Centre.    It implements the SMLC functionality 
 as specified in 3GPP networks [[Location_Services]] architecture. 

 h2. Functionality 

 * Location Methods 
 ** currently only the _Timing Advance based method_ of determining a mobile station. 
 *** operator must configure the locations of the cells in the osmo-smlc configuration file 
 * 3GPP Lb (BSC-SMLC) interface using BSSAP-LE on top of connection-oriented SCCP and M3UA/SCTP/IP 

 If you run a network based on [[OsmoBSC:]] and [[osmo-smlc:|OsmoSMLC]], the serving MSC (such as [[OsmoMSC:]] can subsequently issue _PERFORM LOCATION REQUEST_ queries on the A interface.    The BSC will work with the SMLC to obtain the position, and return a _PERFORM LOCATION RESPONSE_ back to the inquiring serving MSC. 

 h2. Position in the network 

 The below graph shows the SMLC in the network. 


 {{graphviz_link() 
 digraph G { 
   rankdir=LR; 
   MS; 
   BTS; 
   BSC; 
   MSC; 
   SMLC [color=red]; 
   { rank=same; BSC; SMLC; } 
   MS->BTS [label="Um"]; 
   BTS->BSC [label="Abis"]; 
   BSC->MSC [label="A"]; 
   BSC->SMLC [label="Lb"]; 
 } 
 }} 


 {{include(cellular-infrastructure:MacroBinaryPackages)}} 

 h2. Manuals 

 * osmo-smlc User Manual: https://ftp.osmocom.org/docs/latest/osmosmlc-usermanual.pdf 
 * osmo-smlc VTY Reference: https://ftp.osmocom.org/docs/latest/osmosmlc-vty-reference.pdf 

 h2. Source Code 

 The source code is available from @git.osmocom.org@ (module @osmo-cbc@). 

 Public read-only access is available via 
 <pre> 
 git clone https://gitea.osmocom.org/cellular-infrastructure/osmo-smlc 
 </pre> 

 You can also web-browse the repository at https://gitea.osmocom.org/cellular-infrastructure/osmo-smlc 

 Contributions are welcome via [[cellular-infrastructure:Gerrit]]. 

 h2. Test Suite 

 We have a TTCN-3 test suite as part of our [[cellular-infrastructure:Titan_TTCN3_Testsuites]] 
 * source code: https://gitea.osmocom.org/ttcn3/osmo-ttcn3-hacks/src/branch/master/smlc https://git.osmocom.org/osmo-ttcn3-hacks/tree/smlc 
 * results: https://jenkins.osmocom.org/jenkins/job/ttcn3-smlc-test/test_results_analyzer/ 

 

 h2. Child Pages 

 {{child_pages}} 

 h2. Contact 

 * Contact us via the openbsc@ mailing list, see [[cellular-infrastructure:Mailing Lists]]. 
 * Contributions are welcome via [[cellular-infrastructure:Gerrit]]. 

 {{include(cellular-infrastructure:MacroCommercialSupport)}}