US 12,519,881 B2Granted

Routing determination systems and methods

AssigneeT-Mobile USA, Inc.

InventorsMayank Bhutani, Homer Nicolas B. Filart, Dinko Dinkov, Willie Dorance King

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Abstract

System and methods for performing routing determinations for communications requests for both assisted communications and non-assisted communications with devices operated by deaf or hard-of-hearing (DHH) users using a single number are described. A network component may determine whether to use routing that directs such requests to an assistance system based on the type of communications requested and one or more identifiers in a request. If a communications request includes a DHH user device's identifier and communications type that are represented in single number communications data, the network component may forward that request to an assistance system. Otherwise, the network component may route such a request normally.

Claims20

Dependent claims

A method comprising:

receiving, from a source user equipment (UE) at a serving call session control function (S-CSCF) configured at a wireless communications network, a first request to establish a communications session between the source UE and a destination UE;
determining, at the S-CSCF and based at least in part on the first request, a requested communications type and a device identifier associated with the destination UE;
determining, at the S-CSCF and based at least in part on the device identifier and initial filter criteria (iFC) data, routing data associated with the destination UE;
generating, based at least in part on the first request, a second request to establish the communications session between the source UE and the destination UE;
transmitting, by the S-CSCF and based at least in part on the routing data, the second request to one of a video relay service (VRS) system or a terminating telephony application server (T-TAS);
and
establishing, via the wireless communications network and based at least in part on the second request, the communications session between the source UE and the destination UE.

4 more elements

A call session control function (CSCF) comprising:

one or more processors;
one or more transceivers;
and
non-transitory computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
receiving a first request from a source user equipment (UE) to establish a communications session between the source UE and a destination UE;
determining, based at least in part on the first request, a requested communications type and a device identifier associated with the destination UE;
determining, based at least in part on the device identifier and filter criteria data, routing data associated with the destination UE;
generating, based at least in part on the first request, a second request to establish the communications session between the source UE and the destination UE;
transmitting, based at least in part on the routing data, the second request to one of an assisted voice communications system or a video communications system;
and
establishing, based at least in part on the second request, the communications session between the source UE and the destination UE.

8 more elements

Dependencies are inferred from the claim text.