Aspects of the present disclosure involve systems, methods, computer program products, and the like, for implementing a registrar component or functionality in a telecommunications network. In one implementation, the registrar functionality is handled at a Session Border Controller (SBC) or Network Address Translation (NAT) Traversal Manager (NTM) device of the network to alleviate an application server of the network from performing the registration function.

A message (203) of a first communication service is received from a service provider. On the basis of the received message (203) of the first communication service, an information element for personalizing communication services is stored. The received message (203) of the first communication service is then forwarded towards a subscriber (10). Further, a message (205) of a second communication service is received from the subscriber. The stored information element is inserted into the received message (205) of the second communication service. The received message (205) of the second communication service with the inserted information element is then forwarded towards the service provider. The service provider may then personalize the second communication service based on the information element.

Examples disclosed herein involve receiving a request from a calling device to establish a communication session between a mobile device and the calling device, the mobile device assigned a virtual telephone number, retrieving location information corresponding to a location of the mobile device from a location register, and sending a redirect to a session border controller (SBC) to establish the communication session between the calling device and the mobile device based on the location information.

Methods and systems are disclosed for supporting delay budget information in IMS systems. Requests for DBI are received by a first node, contained within a SIP message. This can be achieved by filling a feedback field within the signal with a delay budget indicator. The first node analyzes the received signal in order to determine whether DBI is being requested. Based on this analysis, a request signal is forwarded to a second node, which carries out resource reservation. The request signal can be based on a H.248:Add.req message. In this manner, DBI can be signaled and supported even without dedicated DBI messaging.

Methods and systems are disclosed for supporting delay budget information in IMS systems. Requests for DBI are received by a first node, contained within a SIP message. This can be achieved by filling a feedback field within the signal with a delay budget indicator. The first node analyzes the received signal in order to determine whether DBI is being requested. Based on this analysis, a request signal is forwarded to a second node, which carries out resource reservation. The request signal can be based on a H.248:Add.req message. In this manner, DBI can be signaled and supported even without dedicated DBI messaging.

A method, a device, and a non-transitory storage medium provide to receive a trigger to initiate a media session that is to be supported by a control channel and a media channel; generate a first Short Message Service (SMS) message, which includes a first Session Initiation Protocol (SIP) message configured to initiate the media session, in response to the trigger; transmit, via non-access stratum as the control channel, the first SMS message that includes the first SIP message to a server via a mobility management entity, in response to the generation; determine whether a bearer for the media channel is already established; establish the bearer in response to a determination that the bearer is not already established; use the bearer as the media channel in response to the establishment; and use the bearer as the media channel in response to a determination that the bearer is already established.

A method of call handling when multiple namespaces are present for a call of a priority or emergency call type initiated by a subscriber of a wireless network includes: obtaining, by an originating Proxy Call Session Control Function (P-CSCF), a predetermined precedence order for the multiple namespaces; retrieving, by the originating P-CSCF, each namespace and associated priority from the subscriber's Registration Context; inserting, by the originating P-CSCF, a SIP Resource-Priority header for each namespace and associated priority; and inserting, by the originating P-CSCF, an additional SIP Resource-Priority header with an additional specified namespace (Multiple Namespace Precedence Order (MNPO)) and priority value identifying the predetermined precedence order for the multiple namespaces. The originating P-CSCF uses the namespace with the highest precedence order to select the appropriate values to fill in Reservation-Priority Attribute-Value Pair (AVP) and Multimedia-priority services (MPS) Identifier AVP in Rx interface signaling to a Policy and Charging Rules Function (PCRF).

A method of call handling when multiple namespaces are present for a call of a priority or emergency call type initiated by a subscriber of a wireless network includes: obtaining, by an originating Proxy Call Session Control Function (P-CSCF), a predetermined precedence order for the multiple namespaces; retrieving, by the originating P-CSCF, each namespace and associated priority from the subscriber's Registration Context; inserting, by the originating P-CSCF, a SIP Resource-Priority header for each namespace and associated priority; and inserting, by the originating P-CSCF, an additional SIP Resource-Priority header with an additional specified namespace (Multiple Namespace Precedence Order (MNPO)) and priority value identifying the predetermined precedence order for the multiple namespaces. The originating P-CSCF uses the namespace with the highest precedence order to select the appropriate values to fill in Reservation-Priority Attribute-Value Pair (AVP) and Multimedia-priority services (MPS) Identifier AVP in Rx interface signaling to a Policy and Charging Rules Function (PCRF).

The disclosure relates to a 5th Generation (5G) or 6th Generation (6G) communication system for supporting a higher data transmission rate. The method of a first entity performing a media resource function (MRF) includes transmitting, to a second entity, a session description protocol (SDP) offer message for an SDP negotiation associated with a conference providing a plurality of 360-degree videos, and receiving, from the second entity, an SDP answer message. Wherein the SDP offer message includes a plurality of media descriptions for the plurality of 360-degree videos, and wherein, in case that a first 360-degree video of the plurality of 360-degree videos is originated from one of a plurality of sources at a conference location of the conference, a first media description for the first 360-degree video includes a content attribute for identifying a source from which the first 360-degree video is originated.

The disclosure relates to a 5th Generation (5G) or 6th Generation (6G) communication system for supporting a higher data transmission rate. The method of a first entity performing a media resource function (MRF) includes transmitting, to a second entity, a session description protocol (SDP) offer message for an SDP negotiation associated with a conference providing a plurality of 360-degree videos, and receiving, from the second entity, an SDP answer message. Wherein the SDP offer message includes a plurality of media descriptions for the plurality of 360-degree videos, and wherein, in case that a first 360-degree video of the plurality of 360-degree videos is originated from one of a plurality of sources at a conference location of the conference, a first media description for the first 360-degree video includes a content attribute for identifying a source from which the first 360-degree video is originated.