Osmocom Home NodeB Gateway, for attaching femtocells to the 3G CN (OsmoMSC, OsmoSGSN)
https://osmocom.org/projects/osmohnbgw
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60 lines
2.6 KiB
60 lines
2.6 KiB
Protocols Around the Home Node B Gateway |
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======================================== |
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+--------+ |
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,-->| Osmo | |
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/ | MGCPGW | |
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| | |<--MGCP |
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| +--------+ \ |
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/ | |
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+------------+<--RTP +--------+ `->+----------+ |
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UE <-->| hNodeB | | Osmo | | OsmoMSC | +------+ |
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UE <-->| femto cell |<--Iuh---->| HNB-GW |<--IuCS-->| | | Osmo | |
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| | | | | (VLR)|<-GSUP->| HLR | |
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| | | | +----------+ GSUP->+------+ |
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+------------+<--GTP-U | | / |
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\ | | +------+<---' +------+ |
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| | |<--IuPS-->| Osmo |<--GTP-C--->| Open | |
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| +--------+ | SGSN | GTP-U--->| GGSN | |
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| +------+ / +------+ |
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\_______________________________/ |
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Iuh IuCS/IuPS |
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NAS +----+----+ +----+----+ |
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Non-Access Stratum | CC | MM | | CC | MM | |
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- - - - - - - - - - - +----+----+-------+ +----+----+ |
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| RANAP | | H | RANAP | |
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Access Stratum +---------+ HNBAP | N +---------+ - - SCCP USER SAP |
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| RUA | | B | SUA | \ |
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+---------+-------+ - +---------+ | |
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| SCTP | G | SCTP | } SIGTRAN |
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+-----------------+ W +---------+ | |
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| IP | | IP | / |
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+-----------------+ +---------+ |
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Various SIGTRAN implementations: |
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IuCS/IuPS |
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usual |
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| simplest |
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v v |
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+------+------+------+-----+ |
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| SCCP | SCCP | | | |
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+------+------+ SCCP | | |
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| MTP3 | MTP3 | | | |
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+------+------+------+ SUA | |
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| MTP2 | | | | |
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+------+ M2UA | M3UA | | |
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| M2PA | | | | |
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+------+------+------+-----+ |
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| SCTP | |
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+--------------------------+ |
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| IP | |
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+--------------------------+ |
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UE (User Endpoint) == MS (Mobile Subscriber) == mobile device
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