(Device)            (NGW)                              (App)

      +--------+                                           +--------+
      |  CoAP  |                                           |  CoAP  |
      +--------+                                           +--------+
      |  UDP   |                                           |  UDP   |
      +--------+     +----------------+                    +--------+
      |  IPv6  |     |      IPv6      |                    |  IPv6  |
      +--------+     +--------+-------+                    +--------+
      |  SCHC  |     |  SCHC  |       |                    |        |
      +--------+     +--------+       +                    +        +
      |  LPWAN |     | LPWAN  |       |                    |        |
      +--------+     +--------+-------+                    +--------+
          ((((LPWAN))))             ------   Internet  ------