Cellular Network Infrastructure » Distributed GSM

h1. NetworkLayout

h2. Individual autonomous network (AN)

This diagram shows the components of a single autonomous network.  

{{graphviz_link()

digraph G {

  rankdir = LR;

  OsmoBTS -> OsmoBSC [label="Abis/IP"];

  OsmoBSC -> OsmoSTP [label="AoIP"];

  OsmoSTP -> OsmoMSC [label="AoIP"];

  OsmoBSC -> OsmoMGW [label="MGCP"];

  OsmoMSC -> OsmoMGW [label="MGCP"];

  OsmoBTS -> OsmoMGW [label="RTP"];

  OsmoMSC -> OsmoSipConnector [label="MNCC"];

  OsmoSipConnector -> Universe [label="SIP"];

  OsmoMGW -> Universe [label="RTP or OSMUX"];

  Universe [shape="box"];

  OsmoBTS -> OsmoPCU [label="pcu_sock"];

  OsmoPCU -> OsmoSGSN [label="Gb/IP"];

  OsmoSGSN -> OsmoGGSN [label="GTP"];

  OsmoGGSN -> Universe [label="IP"];

  OsmoSGSN -> GsupProxy [label="GSUP"];

  OsmoMSC -> GsupProxy [label="GSUP"];

  GsupProxy -> Universe [label="GSUP"];

  GsupProxy -> Universe [label="mDNS"];

  OsmoSipConnector -> Universe [label="mDNS"];

  GsupProxy -> OsmoHLR [label="GSUP"];

  { rank = same; OsmoHLR; OsmoMSC; OsmoGGSN; }

}

}}

h2. Macro-Network

In the current proposal, there is no central database. It's a fully peer-to-peer architecture.  All AN and the VoIP uplink / external connectivity are all connected to a shared IP-network with multicast capability.

{{graphviz_link()

digraph G {

  TransNet [shape="diamond", label="IP Network"];

  AN1 [shape="box"];

  AN2 [shape="box"];

  AN3 [shape="box"];

  AN4 [shape="box"];

  AN1 -> TransNet

  AN2 -> TransNet

  AN3 -> TransNet

  AN4 -> TransNet

  VoIP -> TransNet

}

}}