T-mobile Usa, Inc.

Muhilan Vamadevan

Joel Arends

Rahul Amin

Rex Maristela

Tharunika Sridhar

Karthik Chandrasekaran

Srinivasan Sridharan

Techniques for optimizing terminating access domain selection (TADS) flow for a Fifth Generation (5G) standalone (SA) capable interworking device with legacy Fourth Generation (4G) voice over long term evolution (VoLTE) network are discussed herein. A 5G SA capable user equipment (UE) may receive a voice call from any generation network. To receive a 5G voice call on an IP Multimedia Subsystem (IMS) network, a terminating UE must be currently connected to a 5G SA network. However, the system has to determine the currently connected radio access technology (RAT) type before establishing a connection; otherwise, attempts to establish a 5G NR connection would result in network call completion errors. The system may configure a home subscriber server to receive a TADS request for the terminating UE and return a TADS status.

Optimizing terminating access domain selection for a 5G SA interworking device with legacy network

Methods, a system, and computer readable media are disclosed to provide an enhanced Communication Waiting applications service. Enhancements include a method for handling an incoming communication received before an outgoing communication is acknowledged and a method to handle a second incoming communications to a user device before the first incoming communication is acknowledged by the user. Such methods remove limitations on existing techniques by allowing users to select between pending and new incoming calls. In some embodiments, calls not selected by the users are placed on hold or routed to voicemail.

Handling incoming communication during communication set up

Disclosed is an architecture that distributes session control logic across multiple points of a telecommunications network. Also disclosed are techniques and systems using Internet Protocol (IP)-based routing to establish communication sessions. A user equipment (UE) may receive user input to initiate a communication session, derive a destination IP address, generate a session request having at least the destination IP address, and send the session request a server. The server may receive the session request from the UE, replace the destination IP address in the session request with an IP address of an endpoint device to generate a modified session request, and route the modified session request to the endpoint device based at least in part on the IP address of the endpoint device.

Session control logic with internet protocol (IP)-based routing

Aspects of the present disclosure include techniques for dynamically exchanging session initiation protocol (SIP) configurations between a SIP node and a neighbor SIP node. For example, a SIP node may send a first request to the neighbor SIP node to subscribe to neighbor SIP node configurations. The SIP node may then receive a second request from the neighbor SIP node for the neighbor SIP node to subscribe to SIP node configurations. The SIP node then sends the SIP node configurations from the SIP node to the neighbor SIP node and receives the neighbor SIP node configurations from the neighbor SIP node. In some aspects, the SIP node may store the neighbor SIP node configurations to a data store for formatting subsequent SIP messages exchanged between the SIP node and the neighbor SIP node.

Growing community of inventors

Bellevue, WA, United States of America

Muhilan Vamadevan