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author | Ivaylo Kostov <ikostov@sysmocom.de> | 2016-12-29 15:26:59 +0100 |
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committer | Neels Hofmeyr <neels@hofmeyr.de> | 2018-11-27 17:54:20 +0100 |
commit | f87f1113ca5b6905322d40624980e1655f33b999 (patch) | |
tree | 23c198e21453ff9ee5522d8fd77d4f62e8a7c379 /doc | |
parent | dd4160e00331a9df8e0c5ce9a673f31bac0218a6 (diff) |
BSC,BTS: add diagrams of PCU-BTS-NITB-SGSN relationships
Change-Id: I0eb09706efb768fa4f6810872fb6568cbc9838cb
Diffstat (limited to 'doc')
-rw-r--r-- | doc/manuals/chapters/interfaces.adoc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/manuals/chapters/interfaces.adoc b/doc/manuals/chapters/interfaces.adoc index 242fa235..127d4dc5 100644 --- a/doc/manuals/chapters/interfaces.adoc +++ b/doc/manuals/chapters/interfaces.adoc @@ -113,6 +113,32 @@ Contrary to that, many classic E1-based implementations of the GSM RAN co-locate the PCU with the BSC. However, the GSM specifications keep the location up to the implementor. +The GPRS network architecture is shown in <<fig-gprs-pcubts>>. + +[[fig-gprs-pcubts]] +.GPRS network architecture +[graphviz] +---- +digraph G { + rankdir=LR; + MS0 [label="MS"]; + MS1 [label="MS"]; + BTS; + BSC; + MSC; + PCU; + SGSN; + GGSN; + MS0->BTS [label="Um"]; + MS1->BTS [label="Um"]; + BTS->BSC [label="Abis"]; + BSC->MSC [label="A"]; + BTS->PCU [label="pcu_sock"]; + PCU->SGSN [label="Gb"]; + SGSN->GGSN [label="GTP"]; +} +---- + The PCU socket interface serves the following purposes: * to pass PCU relevant configuration from BTS to PCU |