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Charging in IMS networks for sessions that are transferred between access networks

An access network and wireless access network technology, which is applied in the field of offline charging for sessions of dual-mode devices, and can solve problems such as overpayment and inability to correlate CDRs.

Active Publication Date: 2014-04-30
WSOU INVESTMENTS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the CGF cannot correlate the CDRs of the session
As a result, the end user may underpay or overpay for the session

Method used

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  • Charging in IMS networks for sessions that are transferred between access networks
  • Charging in IMS networks for sessions that are transferred between access networks
  • Charging in IMS networks for sessions that are transferred between access networks

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[0055] Figure 5-8 Embodiments are described for charging for a session handed over seamlessly from one access network to another. Figure 5 A communication network 500 in an exemplary embodiment of the invention is illustrated. The communication network 500 includes a GSM network 502 , a WiFi network 503 , and an IMS network 110 . Figure 5 The IMS network 110 further includes a Media Gateway Control Function (MGCF) 512 and a P-CSCF 514 . Figure 5-8 The embodiment in illustrates a seamless handover from the GSM network 502 to the WiFi network 503 when the dual-mode device 106 is invited to a session by the endpoint 140 .

[0056] Figure 6-8 is a message diagram illustrating messages used in a session in an exemplary embodiment of the invention. The message diagram illustrates SIP and Diameter messages used within the communication network 500, although other protocols may be used in other implementations. Assume IMS endpoint 140 (see Figure 5 ) wishes to initiate a s...

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Abstract

IMS networks and methods are disclosed for charging for a session of a dual mode device that is transferred (seamless handover) from a first access network to a second access network. When a session is transferred between access networks, multiple charging identifiers (e.g., ICID) are assigned to the session. One or more network elements in the IMS network identify both an original ICID and a handover ICID for the session, and insert the original and handover ICID in a charging message that is transmitted to a charging system. The charging system then inserts the original ICID and the handover ICID in a CDR for the session. When the session ends, the charging system may use the original ICID and the handover ICID to correlate multiple CDRs for the session. Thus, even if CDRs for the same session have different ICIDs, the charging system is able to correlate the CDRs.

Description

technical field [0001] The present invention relates to the field of communication networks and, in particular, to providing offline provisioning in IMS networks for sessions of dual-mode devices that are transferred between access networks (for example, sessions are transferred (handovered seamlessly) from a GSM network to a WiFi network). Billing. Background technique [0002] One type of communication network that is gaining in popularity is the IP Multimedia Subsystem (IMS) network. In the so-called 3rd Generation Partnership Project (3GPP), IMS provides a common core network with a network structure allowing different types of access networks. The access network between the communication device and the IMS network may be a cellular network (eg CDMA or GSM), WLAN (eg WiFi or WiMAX), Ethernet, or another wireless or wired access network. The IMS architecture was originally defined by 3GPP for providing multimedia services to communication devices on Internet Protocol (I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/14H04L29/06H04W4/24H04W4/26
CPCH04L12/1403H04L12/14H04M2215/7442H04M15/57H04M2215/7833H04L65/1083H04M15/00H04L65/1016H04M15/8228H04M2215/74H04M2215/2026H04M2215/208H04M2215/204H04M15/80G06Q30/04H04W4/24H04W36/14H04M15/8038
Inventor 蔡亦钢李玉栋裴珂徐春光
Owner WSOU INVESTMENTS LLC
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