diff --git a/TS-0041-oneM2M-SensorThings_interworking.md b/TS-0041-oneM2M-SensorThings_interworking.md index 7a27d09848adeb2380c812bea393c34466c92fa1..7bb4af1572c1d203b918f1b107ab639bd7a41965 100644 --- a/TS-0041-oneM2M-SensorThings_interworking.md +++ b/TS-0041-oneM2M-SensorThings_interworking.md @@ -204,7 +204,7 @@ Both directions of the data flow between the OGC/STA server and the IPE require #### 6.3.1.1 Communication direction OGC/STA Server towards IPE -In Figure 6.3.1.1-1, an OGC/STA client is connected to an OGC/STA server, and its data is forwarded to the IPE. he OGC/STA client publishes data to the OGC/STA server via an HTTP-POST message. The 'result' attribute of an "Observation" contains the sensor data. +In Figure 6.3.1.1-1, an OGC/STA client is connected to an OGC/STA server, and its data is forwarded to the IPE. The OGC/STA client publishes data to the OGC/STA server via an HTTP-POST message. The 'result' attribute of an "Observation" contains the sensor data. An "Observation" according to STA Sensing Entities Data Model <a href="#_ref_i.1">[i.1]</a> belongs to a "Datastream" (see Figure 5-2). The IPE shall subscribe to the relevant "Datastream" at the MQTT-Broker of the OGC/STA Server using its specific URL or topic like e.g. {"sta-example-server-address.com/v1.0/Datastreams(8715)"}. After subscribing, the IPE receives every "Observation" that is pushed to that "Datastream".