Method, device and system for realizing IMS cross-domain billing and settlement
A domain name system and equipment technology, applied in the IMS field, can solve the problems of inability to implement cross-domain settlement bills, difficult to separate inter-domain settlement bills from billing bills, and inability to distinguish cross-domain bills.
Active Publication Date: 2018-09-21
CHINA TELECOM CORP LTD
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[0003] In the case of an existing network, the IMS billing point that generates the original bill is set at P-CSCF (Proxy CallSession Control Function, proxy call session control function), MMTEL (Multi Media Telephony, multimedia telephony service) or E-CSCF (Emergency Call Session Control Function, emergency call session control function), these billing points are not set between IMS domains, and the outgoing traffic is not subdivided, and cross-domain bills cannot be distinguished, so the billing points generated It is difficult to separate the bills for inter-domain settlement from billing bills
[0004] Using the BCF (Breakout Gateway Control Function) network element in the IMS architecture, the cross-domain settlement bill can be generated, but if the IMS network does not have a BCF network element, the cross-domain settlement bill cannot be realized
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0027] figure 1 It describes the network structure diagram of the IMS system. Among them, the S-CSCF handles the call initiated by the local IMS domain, and queries the ENUM / DNS according to the called number. If the ENUM / DNS query returns the number of the local IMS domain, the call is controlled t...
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The invention discloses a method, device and system for realizing IMS (IP Multimedia Subsystem) cross-domain charging and settlement and belongs to the IMS field. According to the embodiment of the invention, business logic is additionally realized on a calling-domain call session control device, such as a calling-domain S / I-CSCF device(Serving Call Session Control Function device and Interrogating Call Session Control Function device); whether a certain service is inter-domain call is judged according to the interrogating information of a called number returned by a telephone number mapping system or domain name system; charging and settlement information required by IMS inter-domain call is sent to a CCF (Charging Collection Function) device for recording the information; and therefore, with a network structure not changed and network element equipment not increased, IMS inter-domain charging and settlement can be realized.
Description
technical field [0001] The present invention relates to the field of IMS (IP Multimedia Subsystem, IP Multimedia Subsystem), in particular to a method, device and system for realizing IMS cross-domain charging and settlement. Background technique [0002] With the development of multimedia services, IMS will be at the core of the network, and services between multiple IMS domains of different operators, between multiple IMS domains of the same operator, and between IMS and CS (circuit switched) domains Interworking is also becoming more prevalent, and the mutual billing and settlement issues involved between these networks are becoming more prominent. [0003] In the case of an existing network, the IMS billing point that generates the original bill is set at P-CSCF (Proxy CallSession Control Function, proxy call session control function), MMTEL (Multi Media Telephony, multimedia telephony service) or E-CSCF (Emergency Call Session Control Function, emergency call session c...
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IPC IPC(8): H04L12/14
Inventor 戎琪黄挺时新建
Owner CHINA TELECOM CORP LTD