In the WebRTC and IMS post we briefly described the IMS and WebRTC integration. We explained that the WebRTC allows a rapid development of clients. The clients still need some infrastructure for the signalling and services – that’s the IMS. The network element which is acting as an interface between these two worlds – the world of web and the world of IMS is called a WebRTC GW. The WebRTC GW is a collection of network functions which we need for the translation of protocols, interworking and authentication procedures. It can be implemented as an enhancement of already present elements (e.g. eP-CSCF) or we can have a new stand-alone entity.
As we said the flows and procedures are described in the reference architecture for WebRTC – IMS communication in 3GPP TR 23.701 and 3GPP TR 33.871. Some new information and experience can be also found in GSMA WebRTC to complement IP Communication Services.
WebRTC GW
From the high-level WebRTC GW does the translation between http/ws to SIP and vice versa. When we go a bit more in detail there are many issues which have to be addressed.
- Authentication and Security Issues
- Protocol Issues
- Network Issues
- Media Issues
- Legal Issues
Real Time Communication 