direction toward IPE

TS-0041-oneM2M-SensorThings_interworking.md

@@ -185,18 +185,31 @@ The IPE shall map the 'result' attribute of an OGC/STA 'Observation' to the 'con
 
 **Figure 6.1-1: OGC / STA-to-oneM2M data model mapping** 
 
-<mark>The following text is to be used when appropriate:</mark>
 
 ### 6.3.2 Configuration of the oneM2M CSE
 
-#### 6.3.3.0 Overview
+#### 6.3.2.0 Overview
+
+The IPE needs to perform configuration steps at the hosting CSE.
+
+#### 6.3.2.1 Communication direction oneM2M CSE towards IPE
+
+In figure 6.3.2.1-1 a oneM2M `<AE>` triggert by a sensor sends data to the CSE by creating a `<contentInstance>` in a `<container>` at the CSE. The IPE set a `<subscription>` to the `<container>` and gets a `<notification>` message along with a `<contentInstance>`, when new data arrives.
+
+![Figure 6.3.2.1-1: Data message flow from AE to CSE to IPE](media/config_cse1.png)
+
+**Figure 6.3.2.1-1: Data message flow from AE to CSE to IPE** 
 
-The IPE needs also to perform configuration steps at the hosting CSE.
+The IPE shall set a `<subscription>` to the `<container>` that holds data that should be forwarded to OGC/STA server.
 
-#### Communication direction oneM2M CSE towards IPE
+![Figure 6.3.2.1-2: Configuration message flow for CSE-to-IPE direction](media/config_cse_flow1.png)
 
-The...
+**Figure 6.3.2.1-2: Configuration message flow for CSE-to-IPE direction** 
 
+The detailed configuration messages are shown in Figure 6.3.2.1-2:
+1)	The IPE creates a `<subscription>` to the `<container>` that is appointed to hold data to be forwarded to the OGC/STA side.
+2)	The hosting CSE evaluates the request, performs the appropriate checks, and creates the `<subscription>` resource.
+3)	The hosting CSE responds with the successful result of the `<subscription>` resource creation, otherwise it responds with an error.
 
 
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