neels has uploaded this change for review.
manual: update overview chart with PFCP
Change from ascii art to the dotty chart, taken from the osmocom.org
wiki. No need to keep a separate representation here.
Change-Id: Ifd8843aeb8ff28fec53323c8fb37b10d4d1f2f9b
---
M doc/manuals/chapters/overview.adoc
1 file changed, 64 insertions(+), 26 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-hnbgw refs/changes/76/29076/1
diff --git a/doc/manuals/chapters/overview.adoc b/doc/manuals/chapters/overview.adoc
index aecb21a..65150d7 100644
--- a/doc/manuals/chapters/overview.adoc
+++ b/doc/manuals/chapters/overview.adoc
@@ -9,44 +9,82 @@
as a gateway between the classic 3G core network (CN) domain with its IuCS and IuPS interface
and the femtocell based RAN.
-A typical 3G network consisting of Osmocom components will look as illustrated in the following
+A typical 3G network consisting of Osmocom components is illustrated in the following
diagram:
[[fig-3g]]
.Typical 3G network architecture used with OsmoHNBGW
+[graphviz]
----
- +------------+ +----------+ +---------+ +---------+
- UE <-->| hNodeB |<----Iuh----->| HNB-GW |<--IuCS-->| OsmoMSC |<--GSUP-->| OsmoHLR |
- UE <-->| femto cell | | | | | | |
- | | | | +---------+ +---------+
- | |<---IuUP--\ | |
- | |<-------. | | | +---------+ +------+
- +------------+ | | | |<--IuPS-->| SGSN |<--GTP-C-->| GGSN |
- | | +----------+ | | .------>| |
- | | +---------+ | +------+
- | | +----------+ +---------+ |
- | \-->| MGW |<--IuUP-->| MGW | |
- | | (HNB-GW) | | (MSC) | |
- | +----------+ +---------+ |
- `--------------------GTP-U----------------'
+digraph G {
+ rankdir = LR;
+
+ UE [label="UE\n(3G phone)"]
+ PBX [label="PBX\nAsterisk, FreeSwitch,\nKamailio, Yate, ..."]
+
+ subgraph cluster_msc_mgw {
+ style=dotted
+ MSC
+ MGW1 [label="MGW"]
+ MSC -> MGW1 [label="MGCP",constraint=false]
+ }
+
+ subgraph cluster_hnbgw_mgw_upf {
+ style=dotted
+ MGW3 [label="MGW"]
+ UPF
+ HNBGW [label=HNBGW,style=bold]
+ HNBGW -> MGW3 [label="MGCP",constraint=false]
+ HNBGW -> UPF [label="PFCP",constraint=false]
+ }
+
+ hNodeB [shape="box",label="hNodeB\n(3G femto cell)"]
+
+ MSC -> HLR [label="\nGSUP",style=bold]
+ SGSN -> HLR [label="GSUP",style="dashed,bold"]
+ UE -> hNodeB [label="Uu",style=bold]
+ UE -> hNodeB [style="dashed,bold"]
+ hNodeB -> HNBGW [label="Iuh",style="bold"]
+ STP2 [label="STP\n(SCCP/M3UA)"]
+ HNBGW -> STP2 -> SGSN [label="IuPS",style="dashed,bold"]
+ HNBGW -> STP2 -> MSC [label="IuCS",style="bold"]
+ SGSN -> GGSN [label="GTP-C",style="dashed,bold"]
+ hNodeB -> UPF -> GGSN [label="GTP-U(3G)",style="dashed"]
+ GGSN -> internet [label="tun",style="dashed"]
+
+ hNodeB -> MGW3 [label="IuUP/RTP",constraint=false]
+ MGW3 -> MGW1 [label="IuUP/RTP"]
+
+ MSC -> SIPConnector [label="MNCC socket",style=bold]
+
+ SIPConnector -> PBX [label="SIP",style=bold]
+ MGW1 -> PBX [label="RTP"]
+
+ A, B, C, D [style="invisible"]
+ A -> B [label="data (PS)",style="dashed"]
+ C -> D [label="voice/SMS/USSD (CS)"]
+
+}
----
+
The HNB-GW performs a translation interface between the IuCS/IuPS interfaces on the one hand
side, and the Iuh interface on the or ther hand:
----
Iuh IuCS/IuPS
-
-NAS +----+----+ +----+----+
-Non-Access Stratum | CC | MM | | CC | MM |
-- - - - - - - - - - - +----+----+-------+ +----+----+
- | RANAP | | H | RANAP |
-Access Stratum +---------+ HNBAP | N +---------+ - - SCCP USER SAP
- | RUA | | B | SUA | \
- +---------+-------+ - +---------+ |
- | SCTP | G | SCTP | } SIGTRAN
- +-----------------+ W +---------+ |
- | IP | | IP | /
+ +----+----+
+ | CC | MM |
+NAS +----+----+ . . +----+----+
+Non-Access Stratum | CC | MM | . | RANAP |
+- - - - - - - - - - - +----+----+-------+ +---------+
+ | RANAP | | H | SCCP |
+Access Stratum +---------+ HNBAP | N +---------+
+ | RUA | | B | M3UA |
+ +---------+-------+ - +---------+
+ | SCTP | G | SCTP |
+ +-----------------+ W +---------+
+ | IP | | IP |
+-----------------+ +---------+
----
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