IMS data channel concept of 5g vonr+

VoNR, namely Voice over New Radio, yes VoLTE(Voice over LTE) The evolution version of . Compared with VoLTE,VoNR Except that empty words have become NR outside , other IMS The basic structure and process are related to VoLTE No big change .

VoNR Can provide voice calls 、 Video call and RBT 、 Value added services such as Caizhen . So-called VoNR+, Is hope beyond this , Provide pictures 、 written words 、 Webpage 、 Location and other richer new businesses .

stay VoNR In business , There are three empty ports ,IMS Signalling Bearer 、IMS voice Bearing and IMS video bearing . And in order to support VoNR+ Increased business needs , A new bearing , be called IMS DC( namely Data Chennel). The following figure is the white paper of China Mobile IMS DC Sketch Map .

be based on VoNR+ IMS DC The typical application scenario of is intelligent customer service , Compared with the traditional way of communication through buttons , Added interactive menu , Combine voice and menu interaction , It can greatly improve the user experience and service efficiency .

stay 3GPP TS 26.114 in , Yes MTSI Business (Multimedia Telephony Service for IMS) The architecture of is defined .

  

among , The part of interaction with users includes , keyboard 、 camera 、 Microphone 、 display 、 horn . The content they produce and interact with includes text 、 Audio 、 video 、 There are also media content such as web pages . In this architecture diagram ,Packet-based network interface It is the load of the empty port , That's what I said earlier IMS Signalling Bearer 、IMS Voice bearer 、IMS video bearing 、Data channel.

Reference resources ：

1. China Mobile ,5G VoNR+ Technology and industry white paper
2. 3GPP TS 26.114