IMS gateway systems and methods for online charging in ims networks

A gateway and network technology, applied in the field of communication, can solve problems such as legacy IMS networks

Inactive Publication Date: 2011-08-03
LUCENT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, a problem remains for specifying the functionality to enable online charging of IMS networks

Method used

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  • IMS gateway systems and methods for online charging in ims networks
  • IMS gateway systems and methods for online charging in ims networks
  • IMS gateway systems and methods for online charging in ims networks

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0077] Figure 10 explained Figure 5 A case of originating an IMS call in the IMS network 500 shown in . At first, the calling party (or calling station) sends a SIP INVITE message to CSCF510. CSCF510 sends the INVITE message to IMS gateway system 501 . The IMS gateway system 501 evaluates that this is the first INVITE message of the session, and the current call status is set to "null". The IMS Gateway system 501 invokes a Charging Policy Enforcement Point (PEP) to request a Charging Policy Decision Point (PDP) for charging trigger processing. In this policy management, the charging trigger point is configured as "interruption". The IMS gateway system 501 starts a timer to maintain the current session. The charging trigger rules in PDP can be expressed as follows:

[0078] IF SIP_Method="INVITE" AND Call_Status="NULL"

[0079] AND Trigger_Point_Type="INTERRUPT"

[0080] THEN

[0081] Hold on the current session

[0082] Send “CCR [INITIAL]” charging report to OCS ...

example 2

[0112] Figure 11 explained Figure 5 A case of terminating an IMS call for the IMS network 500 shown in . Initially, the called party's CSCF 510 receives a SIP INVITE message from the calling party. CSCF510 sends the INVITE message to IMS gateway system 501 . The IMS gateway system 501 evaluates that this is the first INVITE message of the session, and the current call status is set to "null". Then, the IMS gateway system 501 invokes the charging PEP to request the charging PDP for charging trigger processing. In this policy management, the charging trigger point is configured as "interruption". The IMS gateway system 501 starts a timer to keep the current session. The charging trigger rules in PDP can be expressed as follows:

[0113] IF SIP_Method="INVITE" AND Call_Status="NULL"

[0114] AND Trigger_Point_Type="INTERRRUPT"

[0115] THEN

[0116] Hold on the current session

[0117] Send “CCR [INITLAL]” charging report to OCS

[0118] Start timer to wait for the “...

example 3

[0158] Figure 12 explained Figure 5 The IMS network 500 shown in is a kind of session termination after the credit is exhausted. At first, the calling party (or calling station) sends a SIP INVITE message to CSCF510. CSCF510 sends the INVITE message to IMS gateway system 501 . The IMS gateway system 501 evaluates that this is the first INVITE message of the session, and the current call status is set to "null". The IMS Gateway system 501 invokes a Charging Policy Enforcement Point (PEP) to request a Charging Policy Decision Point (PDP) for charging trigger processing. In this policy management, the charging trigger point is configured as "interruption". The IMS gateway system 501 starts a timer to maintain the current session. The charging trigger rules in PDP can be expressed as follows:

[0159] IF SIP_Method="INVITE" AND Call_Status="NULL"

[0160] AND Trigger_Point_Type="INTERR UPT"

[0161] THEN

[0162] Hold on the current session

[0163] Send “CCR [INITIAL]...

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Abstract

The present invention provides systems and methods are disclosed for providing online charging in an IMS network. An IMS gateway system receives a first message from a CSCF through a first interface for a call session, and processes the first message to determine whether to contact an OCS for online charging for the call session. If the determination is to contact the OCS, then the IMS gateway system generates a second message that comprises a charging request to transmit to the OCS. The IMS gateway system then maps fields of the first message in the first protocol to fields in the second message in a second protocol used by the OCS, and transmits the second message to the OCS through a second interface. The second message provides the OCS the proper information to perform online chargingfunctions for the call session.

Description

technical field [0001] The invention relates to the field of communication, in particular to an IMS gateway system and method for providing online charging in an IMS network. Background technique [0002] As described in the 3rd Generation Partnership Project (3GPP), the IP Multimedia Subsystem (IMS) provides converged networks with a common core network with an access-agnostic network architecture. Service providers are embracing this architecture in the evolution of next-generation networks. It is very important for the successful deployment of the IMS network to provide an effective IMS online charging method for the operator's revenue output. [0003] Some 3GPP technical specifications describe online charging for IMS networks. For example, the 3GPP TS32.200 specification describes an Online Charging Server (OCS) with a session charging function. The OCS is connected with the Call Session Control Function (CSCF) through the IMS Service Control (ISC) interface. The CS...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/14H04L12/66
CPCH04M15/854H04L12/1403H04L12/14H04M15/00H04L29/06217H04M2215/7295H04W4/24H04M15/57H04M15/62H04M15/63H04M2215/8162H04M15/851H04M2215/7833H04L12/1467H04M15/8292H04M2215/815H04M17/00H04M15/785H04M15/8228H04M15/85H04M2215/2026H04M2215/204H04M2215/208H04M2215/32H04M15/59H04M15/853H04L65/1016H04L12/66
Inventor 蔡亦钢李向阳王鹏赵子军
Owner LUCENT TECH INC
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