T-Mobile USA, Inc.

Saad Hamid

Muhammad Waqar Afzal

Omer Ocak

Kashif Nadeem

Robert L Engelhart

Nader Nabil Farouk Riad

Shujaur Rehman Mufti

Karunakalage Viraj Rakitha Silva

Nitin Bhakri

Systems, methods, and devices can be utilized to provide charging function (CHF) fallback in a 5Generation Core (5GC). An example method is performed by a fail-open function (FOF), and includes receiving, from the CHF, information corresponding to a subscriber of a network. The information is stored in a database. Further, the example method includes receiving, from the CHF or a connected function, a request corresponding to the subscriber. The connected function is a session management function (SMF) and/or a policy control function (PCF). Based on the request, the information stored in the database is at least one of accessed or modified. Based on performing at least one of accessing or modifying the information stored in the database, a response is generated and transmitted to the CHF or the connected function.

Charging function fallback

Techniques for allowing online charging in cases where the online charging system (OCS) is unreachable or partially unreachable are discussed herein. For example, when the OCS cannot be reached and is unable to authorize the requested services, the services can be provided (e.g., a voice communication session established between two devices) without having to wait for authorization from the OCS. Upon completion of the communication session, the OCS is contacted to report the actual number of units used during the session so that the account of the subscriber can be adjusted. In some examples, the IMS tags the CDR provided to the billing system to indicate that the OCS was not able to authorize the communication session. In this way, the billing system is notified that the OCS is to be contacted so that the subscriber's balance can be adjusted.

Online charging of ro fail-open sessions

A method for discovering an interface session within a wireless communication network is discussed herein. The method includes establishing an Internet Protocol (IP) packet-switched network registration between a first node of a plurality of nodes within the wireless communication network and a second node of the plurality of nodes. The method further includes, requesting, by a third node of the plurality of nodes from a fourth node of the plurality of nodes, service for a call of a mobile device within the wireless communication network. Based upon not having an appropriate interface session established between the first node and the fourth node, the method also includes performing, by the fourth node, an interface session discovery. Based at least in part on the interface session discovery, a dedicated bearer is established at the second node for the call.

Interface session discovery within wireless communication networks

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Bellevue, WA, United States of America

Saad Hamid