# US 11,451,673 B2 · Coordinated session charging in roaming scenarios

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- Number: US 11,451,673 B2
- Document ID: US11451673B2
- Status: Granted
- Kind: B2
- Application number: 17/267,599
- Filed: 2018-08-10
- Published: 2021-10-07
- Granted: 2022-09-20
- Earliest claimed: 2018-08-10
- Assignees: Nokia Technologies Oy
- Applicants: Nokia Technologies Oy
- Inventors: Maryse Gardella; Gerald Goermer
- Web page: https://patentgrep.com/patent/US11451673B2

## CPC

- H04M 15/8038: {Roaming or handoff}
- H04W 4/24: Accounting or billing
- H04L 12/14: Charging, metering or billing arrangements specially adapted for data communications, e.g. authentication, authorisation and accounting [AAA] framework
- H04L 12/1403: {Architecture for metering, charging or billing}
- H04M 15/62: {based on trigger specification}
- H04M 15/8228: {Session based}
- H04M 15/41: {Billing record details, i.e. parameters, identifiers, structure of call data record [CDR]}
- H04M 15/67: {Transmitting arrangements for sending billing related information}
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

There are provided measures for coordinated session charging in roaming scenarios. Such measures (of a first session management entity of a first mobile network in a roaming charging related scenario between said first mobile network and a second mobile network) exemplarily comprise transmitting a session creation request message to a second session management entity of said second mobile network, said session creation request message including information indicative of a first configuration utilized for mobile network related charging, and receiving a session creation response message from said second session management entity of said second mobile network, said session creation response message including information indicative of a second configuration utilized for mobile network related charging.

## Claims

### Claim 1

A method in a roaming charging related scenario between a visited public land mobile network and a home public land mobile network, the method comprising:
receiving, at a visited session management entity from said visited public land mobile network, a session establishment request indication message;
discovering, by said visited session management entity, a visited charging entity of said visited public land mobile network;
transmitting, from said visited session management entity to said visited charging entity, a charging initiation request message for generation of partial charging data records in said visited public land mobile network;
receiving, at said visited session management entity, a charging initiation response message from said visited charging entity, said charging initiation response message being indicative of success of said generation of said partial charging data records in said visited public land mobile network and including information indicative of a first configuration utilized for mobile network related charging;
transmitting, from said visited session management entity to a home session management entity of said home public land mobile network, and receiving at said home session management entity, a session creation request message, said session creation request message including said information indicative of said first configuration utilized for mobile network related charging;
discovering, by said home session management entity a home charging entity of said home public land mobile network;
transmitting, from said home session management entity to said home charging entity, a charging initiation request message, said charging initiation request message including said information indicative of said first configuration utilised for mobile network related charging for generation of partial charging data records in said home public land mobile network;
receiving, at said home session management entity, a charging initiation response message from said home charging entity, said charging initiation response message being indicative of success of said generation of said partial charging data records in said home public land mobile network and including information indicative of a second configuration utilized for mobile network related charging;
transmitting, from said home session management entity to said visited session management entity, and receiving at said visited session management entity, a session creation response message, said session creation response message including said information indicative of said second configuration utilized for mobile network related charging;
transmitting, from said visited session management entity to said visited charging entity, a charging update request message, said charging update request message including said information indicative of said second configuration utilized for mobile network related charging;
updating, at said visited charging entity, said generation of said partial charging data records in said visited public land mobile network based on said second configuration utilized for mobile network related charging; and
transmitting, from said visited charging entity to said visited session management entity, and receiving at said visited session management entity, a charging update response message, said charging update response message being indicative of success of said updating said generation of said partial charging data records in said visited public land mobile network.

### Claim 2 (depends on 1)

The method according to claim 1, wherein
said first configuration is a roaming charging profile, or
said second configuration is a roaming charging profile, or
said partial charging data record is a partial roaming session management function protocol data unit charging data record.

### Claim 3 (depends on 1)

A computer program embodied on a non-transitory computer-readable medium, said computer program comprising computer-executable computer program code which, when the program is run on a computer, is configured to cause the computer to carry out the method according to claim 1.

### Claim 4

A system in a roaming charging related scenario, comprising:
a visited session management entity configured to:
receive a session establishment request indication message;
discover a visited charging entity of a visited public land mobile network;
transmit, to said visited charging entity, a charging initiation request message for generation of partial charging data records in said visited public land mobile network;
receive a charging initiation response message from said visited charging entity, said charging initiation response message being indicative of success of said generation of said partial charging data records in said visited public land mobile network and including information indicative of a first configuration utilized for mobile network related charging; and
transmit, to a home session management entity, and receiving at said home session management entity, a session creation request message, said session creation request message including said information indicative of said first configuration utilized for mobile network related charging;
the home session management entity configured to:
discover a home charging entity of a home public land mobile network;
transmit, to said home charging entity, a charging initiation request message, said charging initiation request message including said information indicative of said first configuration utilized for mobile network related charging for generation of partial charging data records in said home public land mobile network;
receive a charging initiation response message from said home charging entity, said charging initiation response message being indicative of success of said generation of said partial charging data records in said home public land mobile network and including information indicative of a second configuration utilized for mobile network related charging; and
transmit to said visited session management entity, and receiving at said visited session management entity, a session creation response message, said session creation response message including said information indicative of said second configuration utilized for mobile network related charging;
the visited session management entity configured to:
transmit to said visited charging entity, a charging update request message, said charging update request message including said information indicative of said second configuration utilized for mobile network related charging; and the visited charging entity configured to:
update said generation of said partial charging data records in said visited public land mobile network based on said second configuration utilized for mobile network related charging; and
transmit to said visited session management entity, and receiving at said visited session management entity, a charging update response message, said charging update response message being indicative of success of said updating said generation of said partial charging data records in said visited public land mobile network.

### Claim 5 (depends on 4)

The system according to claim 4, wherein
said first configuration is a roaming charging profile, or
said second configuration is a roaming charging profile, or
said partial charging data record is a partial roaming session management function protocol data unit charging data record.

### Claim 6

A computer program embodied on a non-transitory computer-readable medium, said computer program comprising computer-executable computer program code which, when the program is run on a computer, is configured to cause the computer to:
receive, at a visited session management entity from a visited public land mobile network, a session establishment request indication message;
discover, by said visited session management entity, a visited charging entity of said visited public land mobile network;
transmit, from said visited session management entity to said visited charging entity, a charging initiation request message for generation of partial charging data records in said visited public land mobile network;
receive, at said visited session management entity, a charging initiation response message from said visited charging entity, said charging initiation response message being indicative of success of said generation of said partial charging data records in said visited public land mobile network and including information indicative of a first configuration utilized for mobile network related charging;
transmit, from said visited session management entity to a home session management entity of said home public land mobile network, and receive at said home session management entity, a session creation request message, said session creation request message including said information indicative of said first configuration utilized for mobile network related charging;
discover, by said home session management entity a home charging entity of said home public land mobile network;
transmit, from said home session management entity to said home charging entity, a charging initiation request message, said charging initiation request message including said information indicative of said first configuration utilized for mobile network related charging for generation of partial charging data records in said home public land mobile network;
receive, at said home session management entity, a charging initiation response message from said home charging entity, said charging initiation response message being indicative of success of said generation of said partial charging data records in said home public land mobile network and including information indicative of a second configuration utilized for mobile network related charging;
transmit, from said home session management entity to said visited session management entity, and receive at said visited session management entity, a session creation response message, said session creation response message including said information indicative of said second configuration utilized for mobile network related charging;
transmit, from said visited session management entity to said visited charging entity, a charging update request message, said charging update request message including said information indicative of said second configuration utilized for mobile network related charging;
update, at said visited charging entity, said generation of said partial charging data records in said visited public land mobile network based on said second configuration utilized for mobile network related charging; and
transmit, from said visited charging entity to said visited session management entity, and receiving at said visited session management entity, a charging update response message, said charging update response message being indicative of success of said updating said generation of said partial charging data records in said visited public land mobile network.

### Claim 7 (depends on 6)

The computer program according to claim 6, wherein
said first configuration is a roaming charging profile, or
said second configuration is a roaming charging profile, or
said partial charging data record is a partial roaming session management function protocol data unit charging data record.