System, methods, nodes, and instruction set for routing a session invitation from a first network (101) to a second network (112) are described. The first network (101) and the second network (112) are interconnected via at least two points of interconnect (114, 120). A first control node (124) receives a session invitation to a first user equipment (106), both are part of the first network (101). The first control node (124) determines whether a breakout condition for routing of the session invitation to the second network (112) is fulfilled. If so, a second control node (128) of the first network (101) selects a point of interconnect (114, 120) to the second network (112), considering a capability information characterizing the first control node (124). Therefore the session invitation may be routed in an efficient way from the first network (101) to the second network (112).

A method is described for processing a request by server of a multimedia IP network core, the request issued by a first device registered with a first multimedia IP network core and destined for a public identity allocated to at least one second device. The method includes replication of the request as a first request and at least one second request; triggering a routing of the first request within the first multimedia IP network core; and triggering a routing of the at least one second request according to at least one predetermined route destined for at least one entity for interconnection of the first multimedia IP network core with a second network core distinct from the first multimedia IP network core.

Method for digital video transmission in real time to multi-homed devices over heterogeneous networks by adopting a packaging forwarding strategy with path and content monitoring to the MPEG media transport protocol (MMT), method for reception and communication system, wherein a sender side has four modules: video parser, feedback packet receiving module, scheduler module and packet transmitter, and a receiver side has six modules: packet receiver, statistics calculator, feedback packet sender, reassembler, video decoder and video renderer.

A fifth generation (5G) radio access network (RAN) can determine that a user equipment (UE) should fall back to engaging in a communication session over an LTE-based Evolved Packet System (EPS) instead of a 5G system. However, to avoid interrupting setup operations that may be occurring separately for that communication session in an IP Multimedia Subsystem (IMS) apart from the 5G system, the EPS fallback can be delayed such that setup in the IMS can proceed at least to a point at which IMS signaling messages are less likely to be undeliverable due to the EPS fallback.

Embodiments of the present disclosure disclose a live broadcast method and system, and a related device. The method in the embodiments of the present disclosure includes: receiving, by a live broadcast client, a push-stream address sent by the live broadcast management server; sending, by the live broadcast client, a proxy push-stream request to a live broadcast proxy client; and sending, by the live broadcast client, collected live broadcast data to the live broadcast proxy client, and pushing the live broadcast data to a live broadcast server over an uplink of a dedicated network connected to the live broadcast proxy client.

Systems and methods can be implemented for IP multimedia subsystem (IMS) resource reservation. A first electronic device can transmit, through an IP network, a non-Session Initiation Protocol (SIP) message to an application server in an IMS network, where the non-IMS SIP message includes a request to initiate an IMS communication session through the IMS network with a second electronic device. A SIP message can also be transmitted through the IMS network to the application server that initiates a SIP INVITE session between the first electronic device and the application server, where the SIP INVITE session is routed through the IMS network. The first electronic device can then, receive a SIP response message that identifies a resource reservation for the IMS communication session from the application server.

A method to manage call continuity in a network environment including a circuit-switched network and an IP multimedia subsystem (IMS) network is provided. A UE monitors one or more ongoing sessions in an IMS network, and the ongoing sessions contain at least one conference call. The UE detects a network-switching event for the UE to switch from the IMS network to a circuit-switched CS network. The UE then determines the one or more ongoing sessions within the IMS network to be released or transferred to the CS network. Finally, the UE performs a session transfer procedure for transferring the determined sessions.

Delivery of high quality video in an adaptive bit rate (ABR) download session is achieved using obtained using lower quality communication paths. The method involves detecting that an ABR download session of a video is in a steady-state condition. If so a further determination is made as to whether there is sufficient pre-fetch time available to download an (N+1)th video segment of the video using at alternative connection path through a virtual WAN having a lower quality than a first connection path through the virtual WAN. If sufficient pre-fetch time is available, the (N+1)th video segment is prefetched using at least the second connection path instead of the first connection path.

One example method of operation may include identifying a call destined for a mobile device, querying a number portability database for call routing information, receiving one or more of a location routing number assigned to the mobile network operator and a location routing number assigned to the mobile virtual network operator, forwarding a call message associated with the call to a session border control device operated by the mobile network operator, and determining whether to route the call to a mobile network operator subscriber or a mobile virtual network operator based on whether the location routing number is assigned to the mobile network operator or the mobile virtual network operator.

An S-CSCF component within an IMS receives a registration request associated with the UE. The registration request is associated with the UE switching from a first network that provides support for a first feature set to a second network that provides support for the second feature set. Instead of performing registration actions and deregistration actions with an application server in response to the registration request, the S-CSCF compares the feature tags of the registration request with previous feature tags that are associated with currently registered features. The S-CSCF causes a registration action to be performed in response to determining that the current registration request includes a feature tag that is not currently registered. The S-CSCF causes a deregistration action to be performed in response to determining that the current registration request does not include a feature that is currently registered.