CN102026140B - Charging information processing method and equipment and communication system - Google Patents

Charging information processing method and equipment and communication system Download PDF

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Publication number
CN102026140B
CN102026140B CN 201010548437 CN201010548437A CN102026140B CN 102026140 B CN102026140 B CN 102026140B CN 201010548437 CN201010548437 CN 201010548437 CN 201010548437 A CN201010548437 A CN 201010548437A CN 102026140 B CN102026140 B CN 102026140B
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information
charging
base station
imsi
call detail
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CN102026140A (en
Inventor
曾弘毅
魏巍
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN 201010548437 priority Critical patent/CN102026140B/en
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Priority to PCT/CN2011/074580 priority patent/WO2011137818A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/31—Distributed metering or calculation of charges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/41—Billing record details, i.e. parameters, identifiers, structure of call data record [CDR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/70—Administration or customization aspects; Counter-checking correct charges
    • H04M15/755—Account identification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/20—Technology dependant metering
    • H04M2215/204—UMTS; GPRS

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Meter Arrangements (AREA)

Abstract

The embodiment of the invention provides charging information processing method and equipment and a communication system. The method comprises the step of: obtaining charge relevance information; and sending the charging relevance information to first equipment in a wireless access network to ensure that the first equipment obtains charging information used for generating a first call detail record based on the maintained charge relevance information before sending the first call detail record of using shunt services by user equipment to a charging gateway. The embodiment of the invention canrealize that the Gi Offload shunt services are charged.

Description

Charging information processing method, device and communication system
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a charging information processing method, charging information processing equipment and a communication system.
Background
With the continuous development of General Packet Radio Service (GPRS) and third Generation (3th Generation, 3G) services, User Equipment (UE) capable of performing internet services, such as smart phones and data card-based netbooks, are widely used, and their corresponding internet services are explosively increasing.
If these internet services and traditional services, such as short messages and voice, are transmitted by using a mobile network, overload of a Packet Switched Domain (hereinafter referred to as PS Domain) may be caused, which may affect the quality of service of the traditional services, such as short messages and voice, as well as the quality of service of the internet services. In compliance with the situation, in the prior art, Gi Offload traffic is performed at a base station and/or a base station controller network element of a Radio Access Network (RAN) side. Fig. 1 is a schematic structural diagram of a UE accessing the internet through a Gi interface between a base station controller and the internet in the prior art, fig. 2 is a schematic structural diagram of a UE accessing the internet through a Gi interface between a base station controller and the internet in the prior art, as shown in fig. 1 or 2, a conventional Service, such as a Wireless Application Protocol (WAP) Application and a Multimedia Messaging Service (MMS) Application, still accesses the internet through a Core Network packet switching (Core Network PS, CN-PS) domain via a base station or a base station controller on a RAN side; some common internet access services, such as web browsing, video on demand, etc., can access the internet through the Gi interface between the base station or the base station controller and the internet, thereby saving the transmission cost from the return link from the base station to the base station controller and from the RAN side to the core network, and reducing the capacity expansion pressure of the RAN side and the core network data services.
When the network provides service to the UE, the network element device needs to perform charging processing according to the situation that the UE occupies network resources. For the case that the UE accesses the internet through the CN-PS domain via the base station or the base station controller on the RAN side, a Serving GPRS Support Node (SGSN) and/or a Gateway GPRS Support Node (GGSN) in the CN-PS domain may be used for charging, but the GGSN or the SGSN may not charge the Gi Offload traffic.
Disclosure of Invention
The embodiment of the invention provides a charging information processing method, a device and a communication system, which are used for charging a shunting service.
The embodiment of the invention provides a charging information processing method, which comprises the following steps:
acquiring charging associated information;
and sending the charging associated information to first equipment in a radio access network, so that the first equipment obtains charging information required for generating a first call detail record based on the maintained charging associated information before sending the first call detail record of the user equipment using the offload service to a charging gateway.
The embodiment of the invention provides another charging information processing method, which comprises the following steps:
receiving and maintaining charging correlation information sent by second equipment in a core network packet switching domain;
based on the maintained charging correlation information, acquiring C-ID and MSISDN information associated with IMSI and PDP dynamic address information in bearer data transmitted on the wireless access network;
and generating a first call detail record of the user equipment using the shunting service according to the IMSI, the PDP dynamic address information, the C-ID and the MSISDN information.
An embodiment of the present invention provides a core network device, including:
the first acquisition module is used for acquiring the charging correlation information;
a first sending module, configured to send the charging associated information obtained by the first obtaining module to a first device in a radio access network, so that the first device obtains, according to the maintained charging associated information, charging information required for generating a first call detail record before sending the first call detail record of the user equipment using the offload service to a charging gateway.
An embodiment of the present invention provides a wireless access network device, including:
the management module is used for receiving and maintaining charging correlation information sent by second equipment in a core network packet switching domain;
a second obtaining module, configured to obtain, based on the charging association information maintained by the management module, C-ID and MSISDN information associated with IMSI and PDP dynamic address information in bearer data transmitted over the ran;
and the generating module is used for generating a first call detail record of the user equipment using the shunting service according to the IMSI, the PDP dynamic address information, the C-ID acquired by the second acquiring module and the MSISDN information.
An embodiment of the present invention provides a communication system, including: core network equipment and radio access network equipment;
the core network device is configured to send charging association information to the radio access network device;
the radio access network equipment is used for acquiring a charging identifier C-ID and MSISDN information of a mobile station integrated service digital network, wherein the charging identifier C-ID is associated with international mobile subscriber identity IMSI and packet data protocol PDP dynamic address information in bearer data transmitted on the radio access network according to the charging associated information sent by the core network equipment; and generating a first call detail record of the user equipment using the shunting service according to the IMSI, the PDP dynamic address information, the C-ID and the MSISDN information.
Therefore, in the embodiment of the present invention, the second device in the core network sends the charging correlation information to the first device on the RAN side, so that the first device on the RAN side can obtain the charging information required for generating the first CDR based on the maintained charging correlation information before sending the first CDR of the offload service used by the user equipment to the charging gateway, thereby facilitating the charging gateway to perform charging processing on the giofload offload service according to the first CDR.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a UE accessing the internet through a Gi interface between a base station controller and the internet in the prior art;
fig. 2 is a schematic structural diagram of a UE accessing the internet through a Gi interface between a base station and the internet in the prior art;
fig. 3a is a flowchart of an embodiment of a charging information processing method according to the present invention;
fig. 3b is a flowchart of another embodiment of the charging information processing method of the present invention;
fig. 4a is a flowchart of a charging information processing method according to another embodiment of the present invention;
FIG. 4b is a flowchart of a charging information processing method according to another embodiment of the present invention;
fig. 5 is a signaling flowchart of a charging information processing method according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of an embodiment of a core network device according to the present invention;
fig. 7 is a schematic structural diagram of an embodiment of a radio access network device of the present invention;
fig. 8 is a schematic structural diagram of another embodiment of the radio access network device of the present invention;
fig. 9 is a schematic structural diagram of a radio access network device according to still another embodiment of the present invention;
FIG. 10 is a block diagram of one embodiment of a communication system of the present invention;
FIG. 11 is a schematic diagram of a network architecture of another embodiment of the communication system of the present invention;
FIG. 12 is a schematic network architecture of a further embodiment of the communication system of the present invention;
FIG. 13 is a schematic network architecture of a communication system according to another embodiment of the present invention;
fig. 14 is a schematic network architecture diagram of a communication system according to still another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Before using the internet service, the UE needs to perform Packet Data Protocol (PDP) context activation. The PDP context activation procedure may be:
the UE sends a PDP activation Request message (Activate PDP Context Request) to the SGSN, and the message can carry the following parameters: a Network Service Access Point Identifier (NSAPI), a session Identifier (TI), a PDP Type (PDP Type), a PDP Address (PDP Address), an Access Point Name (APN), a Quality of Service (QoS) parameter, and an International Mobile Subscriber Identity (IMSI) of the UE.
The SGSN verifies the validity of the Activate PDP Context Request through the PDP Type, the PDP Address, the Access Point Name and the PDP subscription data, and acquires the Mobile Station international ISDN number (MSISDN) corresponding to the IMSI by inquiring a Home Location Register (HLR).
The SGSN sends a create PDP Context request to the GGSN, which may carry the following parameters: PDP Type, PDP Address, APN, negotiated QoS, NSAPI, and IMSI and MSISDN, etc.
The GGSN allocates PDP dynamic address for PDP Context, creates Charging ID (C-ID), and transmits PDP dynamic address information and C-ID back to SGSN. So far, both the SGSN and the GGSN can obtain the IMSI, the MSISDN, the PDP dynamic address information and the C-ID of the UE.
SGSN sends PDP dynamic address information and QoS information to UE through PDP activation response message ActivatePDP Context Accept.
The PDP activation process can be completed. After the PDP is successfully activated, a route between the UE and the GGSN may be established, so that the SGSN and/or the GGSN may perform charging processing on the conventional service used by the UE. GPRS and 3G wireless communication share 5 types of CDRs, namely, Serving GPRS Support Node-Call Detail Record (S-CDR), Mobility Management-Call Detail Record (M-CDR), gateway GPRS Support Node-Call Detail Record (G-CDR), SGSN-mobile originated Short message-Call Detail Record (SGSN delivery-Short message Mobile ordered-Call Detail Record, hereinafter called S-SMO-CDR) and SGSN-Mobile terminated Short message-Call Detail Record (SGSN delivery-Short message Mobile terminated-Call Detail Record, hereinafter called S-SMT-CDR). Of these 5 CDRs, 4 other CDRs are generated by the SGSN, except for the G-CDR generated by the GGSN. Wherein, the S-CDR reflects the use condition of wireless resources; the G-CDR reflects the use condition of external data network resources; the M-CDR reflects the overhead of the system on mobility management; the S-SMO-CDR and S-SMT-CDR reflect short message services using GPRS bearers. The CDRs are output to a Charging Gateway (CG) through a Ga interface, and the CG integrates the CDRs and sends the integrated CDRs to a Charging center for Charging. The CDR is generated when the SGSN or GGSN charges the conventional service of the UE, for example, the service such as short message and voice.
The information required for generating the CDR at least requires C-ID, MSISDN, IMSI and PDP dynamic address information, but the Uu interface between the UE and the base station, the lub interface between the base station and the base station controller, and the lu-PS interface between the base station controller and the core network can only carry IMSI data and cannot carry MSISDN data, so the first device on the RAN side, such as the base station and the base station controller, cannot know the MSISDN information required for generating the first CDR, and the first device on the RAN side cannot know the C-ID required for generating the first CDR. Therefore, neither the base station nor the base station controller can generate the first CDR for the user equipment to use the Gi Offload service, that is, cannot charge the Gi Offload service.
Fig. 3a is a flowchart of an embodiment of a charging information processing method according to the present invention, where the method may be applied to a second device in a core network packet switched domain, as shown in fig. 3a, the method of this embodiment may include:
step 301, obtaining charging associated information.
The second device in the core network packet switched domain may obtain charging correlation information. The second device in the core network packet switched domain may be a GGSN, an SGSN or a snooping device connected to the GGSN and SGSN.
Step 302, sending the charging correlation information to a first device in a radio access network, so that the first device obtains charging information required for generating a first call detail record based on the maintained charging correlation information before sending the first call detail record of the user equipment using the offload service to a charging gateway.
The second device in the core network packet switching domain may send charging associated information to the first device in the RAN, so that the first device obtains charging information required for generating a first Call Detail Record (CDR) used by the user equipment before sending the CDR to the charging gateway, so that the charging gateway can perform charging processing on the Gi Offload traffic used by the user equipment according to the first CDR. The first device in the RAN may be a Base Station, a Base Station Controller, or a Charging Gateway Proxy device (CG-Proxy) communicating with the Base Station and the Base Station Controller, where the Base Station may be a Node or a Base Transceiver Station (BTS), and the Base Station Controller may be a Radio Network Controller (Radio Network Controller, RNC) or a Base Station Controller (BSC).
The embodiment of the present invention may send charging correlation information to a first device on the RAN side in the following manner, so that the first device in the radio access network obtains charging information required for generating a first CDR according to the maintained charging correlation information before sending the first CDR, which uses the split service, to a charging gateway:
1. the function of the GGSN is extended, so that the GGSN can obtain charging correlation information of the C-ID, IMSI, MSISDN information and PDP dynamic address information having a correlation relationship, and send the charging correlation information to a first device in the RAN, for example, to a base station on the RAN side, a base station controller, or a newly deployed CG-Proxy.
2. The function of the SGSN is extended, so that the SGSN can obtain charging correlation information of the C-ID, IMSI, MSISDN information and PDP dynamic address information having a correlation relationship, and send the charging correlation information to a first device in the RAN, for example, to a base station on the RAN side, a base station controller, or a newly added CG-Proxy.
3. The snooping equipment which is communicated with the GGSN and the SGSN is additionally arranged in the core network, the snooping equipment can capture a second CDR which is sent to the CG by the GGSN or the SGSN and uses the traditional service, the second CDR is analyzed and processed to obtain the charging relevant information of C-ID, IMSI, MSISDN information and PDP dynamic address information with relevant relations, and the charging relevant information is sent to a base station, a base station controller or a newly added CG-Proxy at the RAN side.
It can be seen that, in the embodiment of the present invention, by expanding the function of the SGSN or the GGSN in the core network, or newly deploying a snooping device in communication with the SGSN or the GGSN in the core network, the charging association information is sent to the first device on the RAN side, so that the first device on the RAN side can obtain the charging information required for generating the first CDR according to the maintained charging association information before sending the first CDR of the Offload service used by the user equipment to the charging gateway, thereby facilitating the charging gateway to perform charging processing on the Gi off load Offload service according to the first CDR.
A detailed description is given below of a manner in which a snooping device is additionally deployed in a core network side to assist a first device on a RAN side in performing charging processing by using a specific embodiment.
Fig. 3b is a flowchart of another embodiment of the charging information processing method of the present invention, as shown in fig. 3b, the method of this embodiment may include:
step 311, receiving the second CDR using the legacy service sent by the SGSN in the CN-PS domain.
The snooping device may receive a second CDR for the user equipment to use legacy traffic sent by the SGSN in the CN-PS domain. Specifically, the snooping device captures a second CDR sent by the SGSN in the CN-PS domain to the CG. The second CDR is used for charging the legacy service used by the UE.
It will be appreciated that the snooping device may also capture each second CDR sent to the CG by the GGSN in the CN-PS domain.
The second CDR may include a C-ID, an IMSI, MSISDN information, and PDP dynamic address information having an association relationship.
Snooping devices in this embodiment include, but are not limited to, splitters or accounting protocol proxy devices.
And step 312, analyzing the second CDR to obtain charging correlation information.
The snooping device can analyze the second CDR, and extract C-ID, IMSI, MSISDN information and PDP dynamic address information from various information obtained by analysis.
In one implementation, the charging correlation information includes: C-ID, IMSI, MSISDN information and PDP dynamic address information with correlation. It should be understood that the charging correlation information includes, but is not limited to, the aforementioned parameter information.
Step 313, sending the charging associated information to a first device in the radio access network, so that the first device obtains charging information required for generating a first call detail record according to the maintained charging associated information before sending the first call detail record of the user equipment using the offload service to a charging gateway, and sends the second CDR of the user equipment using the conventional service to the CG.
The snooping device may send the extracted C-ID, IMSI, MSISDN information and PDP dynamic address information to a first device on the RAN side, e.g. to a base station in the RAN, to a base station controller or to a CG-Proxy communicating with the base station and the base station controller over a Ga interface.
Moreover, the snooping device may also send to the CG a second CDR captured characterizing use of legacy traffic by the user device. It should be noted that, the process of sending the second CDR to the CG by the snooping device may also be directly forwarded when receiving the second CDR in step 311, and this embodiment does not limit the timing when the snooping device sends the second CDR to the CG.
Therefore, the snooping device newly added in the core network of this embodiment is mainly responsible for two functions, one is to forward the second CDR which is sent to the CG by the SGSN or the GGSN and represents that the user equipment uses the conventional service, and the other is to extract the charging correlation information contained in the second CDR and send it to the first device on the RAN side.
After receiving the charging correlation information sent by the snooping device, the first device on the RAN side, such as a base station, a base station controller or a CG-Proxy, may establish the correlation table. Each entry in the association table may include a set of C-ID, IMSI, MSISDN information, and PDP dynamic address information that are associated with each other. Because the first device at the RAN side can acquire the IMSI and PDP dynamic address information of the UE when the Gi Offload service is performed, the charging device at the RAN side can search the association table according to the IMSI and PDP dynamic address information, and acquire the corresponding C-ID and MSISDN information, thereby generating a first CDR representing that the user equipment uses the Gi Offload service according to the known IMSI and PDP dynamic address information and the C-ID and MSISDN information acquired by table lookup, and sending the first CDR to the CG for performing charging processing of the Gi Offload service.
The method for the first device on the RAN side to know the IMSI and PDP dynamic address information of the UE includes, but is not limited to, the following two methods:
firstly, if the first device is a base station or a base station controller integrated with a CG agent function, the base station or the base station controller analyzes and extracts IMSI and PDP dynamic address information from a service access request after receiving the service access request;
secondly, if the first device is a CG proxy device deployed independently, the CG proxy device receives a call detail record sent by a base station or a base station controller in a radio access network, and parses the call detail record to obtain IMSI and PDP dynamic address information.
It can be seen that, in this embodiment, a snooping device communicating with an SGSN or a GGSN may be newly deployed in a core network, where the snooping device may capture a second CDR sent to a CG by the SGSN or the GGSN to characterize that a user equipment uses a traditional service, so as to analyze charging association information in the second CDR and send the charging association information to a first device on a RAN side, so that the first device on the RAN side may obtain charging information required for generating the first CDR according to the maintained charging association information before sending the first CDR used by the user equipment for offloading service to a charging gateway, so that the charging gateway may perform charging processing on a Gi Offload service according to the first CDR.
The following describes the procedure of processing charging information by the first device on the RAN side in detail.
Before the charging information processing is performed on the Gi Offload traffic, the first device on the RAN side, for example, a base station controller, or a newly added CG-Proxy on the RAN side, has received the charging association information sent by the second device in the PS-CN domain, for example, GGSN, SGSN, or a snooping device in communication with GGSN and SGSN in the core network, and in a process of initiating a service access by the UE, for example, in a process of activating a PDP, the first device on the RAN side can already know the IMSI and PDP dynamic address information of the UE using the Gi Offload traffic through a PDP context activation request. Therefore, when the Gi Offload service is charged, the first device on the RAN side may acquire the C-ID and MSISDN information corresponding to the IMSI and PDP dynamic address information based on the charging association information sent by the second device in the PS-CN domain, and then generate the first CDR according to the known IMSI, PDP dynamic address information, and the acquired C-ID and MSISDN information, so that the CG may perform charging processing on the Gi Offload service according to the first CDR.
Fig. 4a is a flowchart of a charging information processing method according to still another embodiment of the present invention, which may be applied to a first device on the RAN side, as shown in fig. 4a, the method may include: :
step 401, receiving and maintaining charging correlation information sent by a second device in a core network packet switching domain;
step 402, based on the maintained charging correlation information, obtaining C-ID and MSISDN information correlated with IMSI and PDP dynamic address information in the bearing data transmitted on the wireless access network;
it should be noted that, in an implementation manner, if the main body of the method execution is specifically a base station or a base station controller integrated with a CG proxy function, the bearer data transmitted on the radio access network is a service access request received by the base station or the base station controller in the radio access network, and the service access request includes the IMSI and PDP dynamic address information;
in another implementation, if the method execution subject is specifically a CG proxy device deployed independently, the bearer data transmitted over the radio access network is a call detail record sent by a base station or a base station controller in the radio access network.
Step 403, generating a first call detail record of the user equipment using the split service according to the IMSI, the PDP dynamic address information, the C-ID, and the MSISDN information.
The embodiment of the invention can adopt the following modes to enable the first equipment at the RAN side to generate the first CDR:
1. the base station of RAN side, for example Node, as the first device, receives the charging correlation information sent by the second device in the core network, if the service access request received by the base station of RAN side includes the IMSI and PDP dynamic address information. The base station at the RAN side can obtain C-ID and MSISDN information associated with the IMSI and the PDP dynamic address information in the service access request based on the charging associated information, and generate a first CDR according to the IMSI, the PDP dynamic address information C-ID and the MSISDN information;
2. a base station controller on the RAN side, for example, an RNC, as a first device, receives charging association information sent by a second device in the core network, and if a service access request received by the base station controller on the RAN side includes the IMSI and the PDP dynamic address information. The base station controller at the RAN side can obtain C-ID and MSISDN information associated with the IMSI and the PDP dynamic address information in the service access request based on the charging associated information, and generate a first CDR according to the IMSI, the PDP dynamic address information C-ID and the MSISDN information;
3. the method comprises the steps that a CG-Proxy which is newly deployed at a RAN side and communicated with a base station or a base station controller is used as first equipment, charging relevant information sent by second equipment in a core network is received, if the CG-Proxy at the RAN side receives a CDR from the base station or the base station controller, the CDR contains IMSI and PDP dynamic address information, the CG-Proxy can obtain C-ID and MSISDN information related to the IMSI and the PDP dynamic address information in the CDR based on the charging relevant information, and a first CDR is synthesized again according to the IMSI, the PDP dynamic address information C-ID and the MSISDN information.
A detailed description will be given below of a method for adding a snooping device in a core network and additionally deploying CG-Proxy on the RAN side to perform charging information processing on Gi off load split service by using a specific embodiment.
Fig. 4b is a flowchart of another embodiment of the charging information processing method of the present invention, as shown in fig. 4b, the method of this embodiment may include:
step 411, receiving and maintaining the charging correlation information sent by the snooping device in the CN-PS domain.
Specifically, the CG-Proxy can receive charging associated information sent by the snooping device through the Ga interface, wherein the charging associated information can comprise IMSI, PDP dynamic address information, C-ID and MSISDN information which are associated into a group. Specifically, the CG-Proxy may generate an association table according to the IMSI, PDP dynamic address information, C-ID, and MSISDN information, or add the group of IMSI, PDP dynamic address information, C-ID, and MSISDN information as an entry to an existing association table.
Step 412, receiving a CDR sent by a base station or a base station controller in the radio access network, where the CDR includes IMSI and PDP dynamic address information.
The CG-Proxy can receive the CDR sent by the base station or the base station controller through the Ga interface, analyze the CDR and acquire the IMSI and PDP dynamic address information contained in the CDR.
Step 413, based on the maintained charging correlation information, obtaining the C-ID and MSISDN information corresponding to the IMSI and PDP dynamic address information in the CDR.
For example, the CG-Proxy may query the association table to obtain the C-ID and MSISDN information corresponding to the IMSI and PDP dynamic address information in the association table.
And 414, generating a first CDR according to the IMSI, the PDP dynamic address information, the C-ID and the MSISDN information.
The CG-Proxy may generate a first CDR based on the IMSI and PDP dynamic address information obtained from the base station or the base station controller, and the C-ID and MSISDN information obtained by table lookup.
Step 415, the first CDR is sent to the CG.
The CG-Proxy may send this first CDR to the CG via the Ga interface.
It can be seen that, in this embodiment, a CG-Proxy that communicates with a base station and a base station controller may be newly deployed in the RAN side, where the CG-Proxy may receive charging association information sent by an SGSN, a GGSN, or a snooping device newly added in a core network, so that the CG-Proxy may obtain, based on the charging association information, charging information required for generating the first CDR, and generate a first CDR that represents a Offload service used by a user equipment, thereby facilitating a charging gateway to perform charging processing on a Gi Offload service according to the first CDR.
Fig. 5 is a signaling flowchart of a charging information processing method according to another embodiment of the present invention, as shown in fig. 5, in this embodiment, a snooping device is newly deployed in a core network, a CG-Proxy is newly deployed on a RAN side, the snooping device communicates with a GGSN, the SGSN, and the CG-Proxy through Ga interfaces, and the CG-Proxy communicates with a base station, a base station controller, and a CG through Ga interfaces, as shown in fig. 5, the method in this embodiment includes:
step 501, the SGSN/GGSN sends a second CDR.
The second CDR is used for charging the legacy service used by the UE. The second CDR may include a C-ID, an IMSI, MSISDN information, and PDP dynamic address information.
Step 502, the snooping device receives the first CDR and extracts the charging correlation information in the second CDR.
The snooping device can analyze the second CDR, and extract C-ID, IMSI, MSISDN information and PDP dynamic address information from various information obtained by analysis.
At step 503, the snooping device sends the second CDR to the CG.
The snooping device may further send the captured second CDR characterizing the legacy service used by the UE to the CG, so that the CG performs charging processing on the legacy service used by the UE.
And step 504, the snooping device sends the extracted charging correlation information to the CG-Proxy.
The snooping device may send the extracted C-ID, IMSI, MSISDN information, and PDP dynamic address information to the CG-Proxy on the RAN side.
It should be noted that there may be no sequence between step 503 and step 504.
And step 505, the CG-Proxy establishes or updates an association table according to the charging association information.
The CG-Proxy may generate an association table according to the IMSI, PDP dynamic address information, C-ID and MSISDN information, or add the set of IMSI, PDP dynamic address information, C-ID and MSISDN information as an entry to an existing association table.
Step 506, the base station/base station controller sends the CDR to CG-Proxy.
Step 507, CG-Proxy extracts IMSI and PDP dynamic address information in the CDR, inquires the association table, obtains C-ID and MSISDN information corresponding to the IMSI and PDP dynamic address information, and regenerates the first CDR according to the IMSI and PDP dynamic address information, C-ID and MSISDN information.
The CG-Proxy may receive the CDR sent by the base station or the base station controller through the Ga interface, and then parse the CDR to obtain the IMSI and PDP dynamic address information included in the CDR.
CG-Proxy can inquire the association table to obtain the C-ID and MSISDN information corresponding to IMSI and PDP dynamic address information in the association table. The CG-Proxy may regenerate the first CDR based on the IMSI and PDP dynamic address information obtained from the base station or the base station controller, and the C-ID and MSISDN information obtained by table lookup.
Step 508, the CG-Proxy sends the first CDR to the CG.
The CG-Proxy can send the first CDR to the CG through the Ga interface, so that the CG can charge Gi Offload shunt service.
It can be seen that, in this embodiment, a snooping device communicating with an SGSN and a GGSN may be newly added in a core network, a CG-Proxy communicating with a base station and a base station controller is newly added in a RAN side, and the snooping device may capture a second CDR, which is sent to the CG by the SGSN or the GGSN and characterizes that a user equipment uses a traditional service, so as to extract charging correlation information in the second CDR of the traditional service and send the charging correlation information to the CG-Proxy of the RAN side, and the CG-Proxy of the RAN side may obtain charging information required for generating the first CDR based on the charging correlation information and generate a first CDR characterizing that the user equipment uses a Offload service, so that a charging gateway performs charging processing on a Gi Offload traffic service according to the first CDR.
Fig. 6 is a schematic structural diagram of an embodiment of a core network device of the present invention, and as shown in fig. 6, the core network device of this embodiment may be understood as a second device in the PS-CN domain related to the foregoing method embodiment, such as a GGSN, an SGSN, or a snooping device connected to the GGSN and the SGSN, and the core network device of this embodiment may include: a first acquisition module 12 and a first sending module 13, wherein:
the first obtaining module 12 is configured to obtain charging correlation information;
the first sending module 13 is configured to send the charging association information obtained by the first obtaining module 12 to a first device in a radio access network, so that the first device obtains charging information required for generating a first call detail record based on the maintained charging association information before sending the first call detail record of the user equipment using the offload service to a charging gateway.
It should be understood that, if the core network device of this embodiment is specifically a snooping device that is deployed independently and connected to the GGSN and the SGSN, correspondingly, the core network device of this embodiment may further include:
the first receiving module 11 is configured to receive a second call detail record, which is sent by an SGSN or a GGSN in the packet switched domain of the core network and characterizes that the user equipment uses the legacy service.
Correspondingly, the first obtaining module 12 may be specifically configured to analyze the second call detail record received by the first receiving module 11, so as to obtain the charging correlation information.
Accordingly, the first sending module 13 may be further configured to send the second call detail record received by the first receiving module 11 to a charging gateway.
If the core network device of this embodiment is specifically GGSN and SGSN with snooping function, correspondingly, the first obtaining module 12 may directly obtain the charging correlation information; for example, the GGSN and the SGSN acquire the charging association information by using the prior art, which is not described herein again.
The specific working modes of each functional module and unit in the device embodiment of the invention are referred to the method embodiment of the invention. The functional modules and units in the device embodiment of the invention can be realized separately, or can be integrated in one or more units for realization.
It can be seen that, the core network device of this embodiment obtains the charging correlation information (for example, by analyzing the charging correlation information in the second CDR that represents that the user equipment uses the traditional service) and sends the charging correlation information to the first device on the RAN side, so that the first device on the RAN side can obtain the charging information required for generating the first CDR based on the maintained charging correlation information before sending the first CDR that represents that the user equipment uses the offload service to the charging gateway, and thus the charging gateway can perform charging processing on the giofload offload service according to the first CDR.
Fig. 7 is a schematic structural diagram of an embodiment of a radio access network device of the present invention, and as shown in fig. 7, the device of this embodiment may be understood as a first device on the radio access network side related to the foregoing method embodiment, for example, a base station on the RAN side, a base station controller, or a newly added CG-Proxy, and the device of this embodiment may include: a management module 21, a second obtaining module 22, and a generating module 23, wherein:
the management module 21 is configured to receive and maintain charging correlation information sent by a second device in a core network packet switched domain;
the second obtaining module 22 is configured to obtain, based on the charging association information maintained by the management module 21, C-ID and MSISDN information associated with IMSI and PDP dynamic address information in bearer data transmitted over the wireless access network;
the generating module 23 is configured to generate a first call detail record of the user equipment using the split service according to the IMSI, the PDP dynamic address information, and the C-ID and MSISDN information acquired by the second acquiring module 22.
The apparatus of this embodiment may further include a second sending module 26, configured to send the first call detail record generated by the generating module 23 to the billing gateway.
Fig. 8 is a schematic structural diagram of another embodiment of a radio access network device of the present invention, as shown in fig. 8, in this embodiment, on the basis of the device shown in fig. 7, if the bearer data transmitted on the radio access network is a call detail record, the device of this embodiment may further include a second receiving module 24, where: the second receiving module 24 is configured to receive the call detail record sent by the base station or the base station controller in the radio access network (here, the call detail record may be understood as an original CDR sent by the base station or the base station controller, and the original CDR is a complete CDR that does not meet the requirement of the charging gateway CG);
correspondingly, the second obtaining module 22 may specifically include a first parsing unit 221 and a first obtaining unit 222, where:
the first parsing unit 221 is configured to parse the call detail record received by the second receiving module 24 to obtain the IMSI and the PDP dynamic address information;
the first obtaining unit 222 is configured to obtain, according to the IMSI and the PDP dynamic address information obtained by analyzing by the first analyzing unit 221, the corresponding C-ID and MSISDN information from the charging association information maintained by the management module 21 through matching.
Accordingly, the generation module 23 regenerates the original CDR sent by the base station or the base station controller into a complete CDR, i.e. a standard CDR, meeting CG requirements.
Fig. 9 is a schematic structural diagram of a further embodiment of a radio access network device of the present invention, as shown in fig. 9, in this embodiment, on the basis of the device shown in fig. 7, if bearer data transmitted on the radio access network is a service access request, the radio access network device further includes a third receiving module 25, where the third receiving module 25 is configured to receive the service access request transmitted by a previous level of network element device;
correspondingly, the second obtaining module 22 may specifically include a second parsing unit 223 and a second obtaining unit 224, where:
the second parsing unit 223 is configured to parse the service access request received by the third receiving module 25 to obtain the IMSI and the PDP dynamic address information;
the second obtaining unit 224 is configured to obtain, according to the IMSI and the PDP dynamic address information obtained by analyzing by the second analyzing unit, the corresponding C-ID and MSISDN information from the charging association information maintained by the management module 21 through matching.
The specific working modes of each functional module and unit in the device embodiment of the invention are referred to the method embodiment of the invention. The functional modules and units in the device embodiment of the invention can be realized separately, or can be integrated in one or more units for realization.
Therefore, the radio access network device of the embodiment of the invention obtains the charging information required for generating the first CDR based on the received and maintained charging correlation information, and generates the first CDR representing the user equipment to use the Offload service, thereby facilitating the charging gateway to charge the Gi Offload service according to the first CDR.
Fig. 10 is a schematic structural diagram of an embodiment of a communication system of the present invention, and as shown in fig. 10, the system of this embodiment may include: a core network device 1 and a radio access network device 2;
the core network device 1 is configured to send charging correlation information to the radio access network device 2;
the radio access network equipment 2 is used for acquiring C-ID and MSISDN information associated with IMSI and PDP dynamic address information in bearer data transmitted on the radio access network according to the charging associated information sent by the core network equipment 1; and generating a first call detail record of the user equipment using the shunting service according to the IMSI, the PDP dynamic address information, the C-ID and the MSISDN information.
In an implementation manner, the core network device 1 is specifically configured to analyze the second call detail record of the conventional service used by the user equipment to obtain charging associated information, and send the charging associated information to the radio access network device 2.
It should be understood that the core network device 1 may be understood as the second device in the PS-CN domain related to the foregoing method embodiment, and the radio access network device 2 may be understood as the first device on the radio access network side related to the foregoing method embodiment.
Fig. 11 is a schematic diagram of a network architecture of another embodiment of the communication system of the present invention, as shown in fig. 11, in this embodiment, the core network device is a snooping device that is added in the core network and communicates with an SGSN and a GGSN, and the radio access network device is a CG-Proxy that is added in the RAN and communicates with a base station and a base station controller. The method interaction flow shown in fig. 5 is applied to the network structure shown in fig. 11.
Fig. 12 is a schematic diagram of a network architecture of a further embodiment of the communication system of the present invention, as shown in fig. 12, in this embodiment, a core network device is an SGSN or a GGSN in a core network, the SGSN or the GGSN has a snooping function, and a radio access network device is a CG-Proxy that communicates with a base station on a RAN side and a base station controller. The method interaction process of the embodiment of the present invention may also be applied to the network structure shown in fig. 12, and the implementation principle and technical effect thereof are not described herein again.
Fig. 13 is a schematic diagram of a network architecture of another embodiment of the communication system of the present invention, as shown in fig. 13, in this embodiment, the core network device is a snooping device that is additionally arranged in the core network and communicates with an SGSN and a GGSN, and the radio access network device is a base station or a base station controller on the RAN side, where the base station or the base station controller has a charging proxy function. The method interaction process of the embodiment of the present invention may also be applied to the network structure shown in fig. 13, and the implementation principle and technical effect thereof are not described herein again.
Fig. 14 is a schematic diagram of a network architecture of a communication system according to still another embodiment of the present invention, as shown in fig. 14, in this embodiment, a core network device is an SGSN or a GGSN in a core network, the SGSN or the GGSN has a snooping function, a radio access network device is a base station or a base station controller on a RAN side, and the base station or the base station controller has a charging proxy function. The method interaction process of the embodiment of the present invention may also be applied to the network structure shown in fig. 14, and the implementation principle and technical effect thereof are not described herein again.
The core network device in the foregoing embodiment may be configured to execute the technical solution of the foregoing corresponding method embodiment, and the radio access network device may be configured to execute the technical solution of the foregoing corresponding method embodiment.
In summary, in the embodiment of the present invention, by adding a snooping device in communication with the SGSN and the GGSN in the core network, or expanding the function of the SGSN or the GGSN in the core network, the charging association information is extracted and sent to the RAN side, and adding a CG-Proxy in communication with the base station and the base station controller, or a base station controller with an expanded function, so that the CG-Proxy on the RAN side, or the base station controller with an expanded function can obtain the charging information required for generating the first CDR based on the received and maintained charging association information, and generate the first CDR representing the Offload service used by the user equipment, thereby facilitating the charging gateway to perform charging processing on the Gi Offload traffic according to the first CDR.
The embodiment of the invention meets the scene of the similar Gi Offload that the charging information is acquired and output by a base station or a base station controller at the RAN side. The newly added snooping equipment communicated with the SGSN and the GGSN in the core network or the newly added CG-Proxy communicated with the base station and the base station controller support a standard Ga interface, do not need to define any private protocol and have no impact on the existing network.
The technical scheme of the embodiment of the invention is not limited to supporting Gi Offload.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (15)

1. A communication system, comprising: core network equipment and radio access network equipment;
the core network device is configured to send charging association information to the radio access network device;
the radio access network equipment is used for acquiring a charging identifier C-ID and MSISDN information of a mobile station integrated service digital network, wherein the charging identifier C-ID is associated with international mobile subscriber identity IMSI and packet data protocol PDP dynamic address information in bearer data transmitted on the radio access network according to the charging associated information sent by the core network equipment; and generating a first call detail record of the user equipment using the shunting service according to the IMSI, the PDP dynamic address information, the C-ID and the MSISDN information.
2. The system of claim 1,
the core network equipment is a service GPRS supporting node SGSN, a gateway GPRS supporting node GGSN or snooping equipment communicated with the SGSN and the GGSN; the wireless access network equipment is a base station, a base station controller or charging gateway agent equipment communicated with the base station and the base station controller.
3. A method for processing charging information is characterized by comprising the following steps:
acquiring charging associated information;
and sending the charging associated information to first equipment in a radio access network, so that the first equipment obtains charging information required for generating a first call detail record based on the maintained charging associated information before sending the first call detail record of the user equipment using the offload service to a charging gateway.
4. The method of claim 3, wherein before obtaining the charging correlation information, the method further comprises:
receiving a second call detail record which is sent by SGSN or GGSN in a core network packet switching domain and is used by the user equipment for the traditional service;
the obtaining of the charging correlation information includes:
and analyzing the second call detail record to obtain the charging correlation information.
5. The method of claim 3 or 4, wherein the sending the charging correlation information to the first device in the radio access network comprises:
and sending the charging correlation information to a base station, a base station controller or charging gateway proxy equipment in communication with the base station and the base station controller in a wireless access network.
6. The method according to claim 3 or 4, wherein the charging correlation information comprises: C-ID, IMSI, MSISDN information and PDP dynamic address information with the association relationship;
the charging information comprises C-ID and MSISDN information which are related to IMSI and PDP dynamic address information in the bearing data transmitted on the wireless access network.
7. A method for processing charging information is characterized by comprising the following steps:
receiving and maintaining charging correlation information sent by second equipment in a core network packet switching domain;
based on the maintained charging correlation information, acquiring C-ID and MSISDN information correlated with IMSI and PDP dynamic address information in the bearing data transmitted on the wireless access network;
and generating a first call detail record of the user equipment using the shunting service according to the IMSI, the PDP dynamic address information, the C-ID and the MSISDN information.
8. The method of claim 7, wherein the bearer data transmitted over the radio access network is a service access request received by a base station or a base station controller in the radio access network, and the service access request includes the IMSI and the PDP dynamic address information;
or,
before the obtaining of the C-ID and MSISDN information associated with the IMSI and PDP dynamic address information in the bearer data transmitted over the radio access network, the method includes:
receiving a call detail record sent by a base station or a base station controller in a wireless access network, and analyzing the call detail record to obtain the IMSI and PDP dynamic address information; and the bearer data transmitted on the wireless access network is the call detail record.
9. The method according to claim 7 or 8, wherein the receiving and maintaining the charging correlation information sent by the second device in the core network packet switched domain comprises:
receiving and maintaining charging associated information sent by an SGSN, a GGSN or a snooping device communicated with the SGSN and the GGSN in a core network packet switching domain, wherein the charging associated information comprises: C-ID, IMSI, MSISDN information and PDP dynamic address information with correlation.
10. The method of claim 7 or 8, wherein after generating the first call detail record, further comprising:
and sending the first call detail record to a charging gateway.
11. A core network device, comprising:
the first acquisition module is used for acquiring the charging correlation information;
a first sending module, configured to send the charging associated information obtained by the first obtaining module to a first device in a radio access network, so that the first device obtains, according to the maintained charging associated information, charging information required for generating a first call detail record before sending the first call detail record of the user equipment using the offload service to a charging gateway.
12. The apparatus of claim 11, further comprising:
a first receiving module, configured to receive a second call detail record, which is sent by an SGSN or a GGSN in a core network packet switching domain and used by a user equipment for using a conventional service;
the first obtaining module is specifically configured to analyze the second call detail record received by the first receiving module to obtain the charging correlation information;
the first sending module is further configured to send the second call detail record received by the first receiving module to a charging gateway.
13. A radio access network device, comprising:
the management module is used for receiving and maintaining charging correlation information sent by second equipment in a core network packet switching domain;
a second obtaining module, configured to obtain, based on the charging association information maintained by the management module, C-ID and MSISDN information associated with IMSI and PDP dynamic address information in bearer data transmitted over the ran;
and the generating module is used for generating a first call detail record of the user equipment using the shunting service according to the IMSI, the PDP dynamic address information, the C-ID acquired by the second acquiring module and the MSISDN information.
14. The apparatus of claim 13, wherein the bearer data transmitted over the radio access network is a call detail record, the apparatus further comprising:
a second receiving module, configured to receive the call detail record sent by a base station or a base station controller in a radio access network;
the second acquisition module includes:
the first analysis unit is used for analyzing the call detail record received by the second receiving module to obtain the IMSI and the PDP dynamic address information;
the first obtaining unit is used for matching corresponding C-ID and MSISDN information from the charging correlation information maintained by the management module according to the IMSI and the PDP dynamic address information obtained by the analysis of the first analyzing unit;
or,
the bearer data transmitted over the radio access network is a service access request, and the apparatus further includes:
a third receiving module, configured to receive the service access request transmitted by the upper level network element device;
the second acquisition module includes:
a second analyzing unit, configured to analyze the IMSI and the PDP dynamic address information from the service access request received by the third receiving module;
and the second acquisition unit is used for matching and acquiring corresponding C-ID and MSISDN information from the charging correlation information maintained by the management module according to the IMSI and the PDP dynamic address information acquired by the analysis of the second analysis unit.
15. The apparatus of claim 13, further comprising:
and the second sending module is used for sending the first call detail record generated by the generating module to a charging gateway.
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