+------+   +--------+   +--------+   +-------+   +-------+   +------+
|      |   |        |   |        |   |       |   |       |   |      |
| CCM  |   | C-MADP |   | Wi-Fi  |   |  LTE  |   |  NCM  |   |N-MADP|
|      |   |        |   |  N/W   |   |  N/W  |   |       |   |      |
+------+   +--------+   +--------+   +-------+   +-------+   +------+
+-------------------------------------------------------------------+
|    Traffic over LTE in UL and DL over MPTCP Connection            |
+-------------------------------------------------------------------+
+-------------------------------------------------------------------+
|    Wi-Fi Connection Establishment and IP Address Allocation       |
+----------------------------------------------------------------+--+
 |             |             |             |          |         |
 |15. MX Reconfiguration REQ (Wi-Fi IP)    |          |         |
 +--------------------------------------------------->|         |
 |16. MX Reconfiguration RSP               |          |         |
 |<----------------------------------------+----------+         |
 |17. MX UP Setup REQ (MPTCP proxy IP/Port, Aggregation)        |
 |<--------------------------+-------------+----------+         |
 |18. MX UP Setup RSP        |             |          |         |
 +-------------+-------------+-------------+--------->|         |
 |             |19. IPsec Tunnel Establishment over Wi-Fi Path  |
 |             |<-------------------------------------+-------->|
 |             |             |             |          |         |
 |20. MX Meas Report (Wi-Fi RSSI,          |          |         |
 |    LTE RSRP, UL/DL TPUT)                |          |+------------+
 +-------------+-------------+-------------+--------->||Wait for    |
 |             |             |             |          ||good reports|
 |             |             |             |          |+------------+
 |21. MX Traffic Steering REQ (UL/DL access,          |         |
 |    Traffic Flow Templates (TFTs))                  | +----------+
 |<----------------------------------------+----------+ |Allow use |
 |                                         |          | |    of    |
 |22. MX Traffic Steering RSP (...)        |          | |Wi-Fi link|
 +-------------+-------------+----------------------->| +----------+
 |             |             |             |          |         |
 |             | 23. Add TCP subflow to the MPTCP connection    |
 |             |     over Wi-Fi link (IPsec Tunnel)             |
 |             |<---------------------------------------------->|
 |             |             |             |          |         |
+----------------------------------------------------------------+
||      Aggregated Wi-Fi and LTE capacity for UL and DL         ||
+----------------------------------------------------------------+
 |                                                              |
 |                                                              |