4 results about "Voice over packet" patented technology

A user equipment (UE) transmits a registration request message to a first public land mobile network (PLMN), wherein the first PLMN is a roaming PLMN, receives a registration accept message from the first PLMN, determines that the registration accept message includes a manipulated steering of roaming (SoR) container or does not include a SoR container, wherein the SoR container is configured by a home PLMN (HPLMN) of the UE and transmitted to the first PLMN from the HPLMN, determines that the registration accept message includes an indication that the first PLMN does not support voice over packet switching (VoPS) and adds the first PLMN to a first list of PLMNs in which voice service is not possible in an N1 mode.

A method of a user equipment having a usage setting set to voice centric, includes sending a registration request to a network associated with an access technology comprising a terrestrial next generation radio access network (NG-RAN) or satellite-based NG-RAN, receiving a response to the request, the response comprising information that internet protocol multimedia system (IMS) voice over packet switching (PS) session is not available, based on the response comprising information that internet protocol multimedia system (IMS) voice over packet switching (PS) session is not available, storing an identification of the network in association with an indication of the access technology for which IMS voice over PS session is not available, in information identifying networks with associated access technologies for which IMS voice over PS session is not available, and selecting, as a candidate network for sending a further registration request to, a further network and associated access technology, other than networks with associated access technologies identified in the information stored.

Methods and systems provided herein provide for IMS de-registration when a roaming network does not support voice over long term evolution (VoLTE) or voice over new radio (VoNR). An IMS de-registration system can trigger functionality in a home subscriber server and / or a unified data management (UDM) function to trigger de-registration from the IMS. The system may trigger identification of a non-voice over packet switched (non-VoPS) network and further trigger de-registration based on this identification.

A method of a user equipment (UE) having a usage setting set to voice centric, includes sending a registration request to a network associated with an access technology comprising one of terrestrial next generation radio access network (NG-RAN) and satellite-based NG-RAN, receiving a response to the request, the response comprising information that internet protocol multimedia system (IMS) voice over packet switching (PS) session is not available in N1 mode for the access technology associated with the network, storing an identification of the network in first information including identifications of networks, which first information is associated with the access technology comprising the one of the terrestrial NG-RAN and the satellite NG-RAN, and selecting, as a candidate network for sending a further registration request to, a further network and associated access technology, other than the networks associated with the access technology identified in the first information stored.