CN106488582B - Method, device and system for establishing LTE PCC session - Google Patents
Method, device and system for establishing LTE PCC session Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for establishing an LTE PCC session, wherein the method comprises the following steps: after receiving a session request, extracting a user IP address from the session request; inquiring a PGW corresponding to the IP address of the user; acquiring user subscription information associated with a user IP address from a PGW; generating a corresponding PCC rule according to the user subscription information; and sending the PCC rule to the PGW so that the PGW executes the PCC rule. The method, the device and the system provided by the disclosure can enable an LTE user to establish the LTE PCC conversation for the user based on the network element at the network side without going off the line, and enable the user to dynamically adjust the QoS in real time, thereby reducing the time delay for the user to acquire the QoS dynamic adjustment service or other services.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for establishing an LTE PCC session.
Background
According to the current international standard of 3GPP (3rd Generation Partnership Project), when an LTE (Long Term Evolution) user accesses, in order to save system resources or for other reasons, the network side may not establish a PCC (Policy Control and Charging) session for the user. However, according to the existing standard, unless the user goes offline and re-accesses the network, the network side cannot establish the LTE PCC session for the user, and thus cannot dynamically adjust the QoS (Quality of Service) of the user.
Therefore, it is necessary to provide an LTE PCC session establishment method to solve the above technical problems.
Disclosure of Invention
The technical problem to be solved by the present disclosure is how to provide an LTE PCC session establishment method, so that a user can establish an LTE PCC session based on a network side without going offline and re-accessing the network.
The present disclosure provides a method for establishing an LTE PCC session, comprising: after receiving a session request, extracting a user IP address from the session request; querying a PGW corresponding to the user IP address; acquiring user subscription information associated with the user IP address from the PGW; generating a corresponding PCC rule according to the user subscription information; and sending the PCC rule to the PGW so that the PGW executes the PCC rule.
Further, the step of querying the PGW corresponding to the user IP address includes: judging whether a PGW corresponding to the user IP address exists or not; if the PGW corresponding to the user IP address exists, executing a step of acquiring user subscription information associated with the user IP address from the PGW; and if the PGW corresponding to the user IP address does not exist, sending an LTE PCC session establishment failure message.
Further, the step of obtaining the user subscription information associated with the user IP address from the PGW includes: sending a query request to the PGW, wherein the query request includes the user IP address, so that the PGW queries user subscription information associated with the user IP address; after receiving a query response sent by the PGW, judging whether the PGW queries user subscription information associated with the user IP address according to the query response; and if the PGW inquires the user subscription information associated with the user IP address, after receiving credit control request information sent by the PGW, extracting the user subscription information associated with the user IP address from the credit control request information.
Further, if the PGW does not inquire the user subscription information associated with the user IP address, an LTE PCC session establishment failure message is sent.
Further, the subscriber subscription information includes the IMSI and related session information of the subscriber.
The present disclosure also provides a PCRF unit for establishing an LTE PCC session, including: the receiving module is used for extracting the IP address of the user from the session request after receiving the session request; the query module is used for querying the PGW corresponding to the user IP address; an obtaining module, configured to obtain, from the PGW, user subscription information associated with the user IP address; a PCC rule generating module, configured to generate a corresponding PCC rule according to the user subscription information; a sending module, configured to send the PCC rule to the PGW, so that the PGW executes the PCC rule.
Further, the query module specifically judges whether a PGW corresponding to the user IP address exists; if the PGW corresponding to the user IP address exists, indicating an acquisition module to execute an operation of acquiring user subscription information associated with the user IP address from the PGW; and if the PGW corresponding to the user IP address does not exist, indicating the sending module to send an LTE PCC session establishment failure message.
Further, the obtaining module comprises a sending submodule, a receiving submodule and a obtaining submodule, wherein: a sending sub-module, configured to send a query request to the PGW, where the query request includes the user IP address, so that the PGW queries user subscription information associated with the user IP address; the receiving submodule is used for receiving the query response sent by the PGW; the obtaining sub-module is used for judging whether the PGW inquires the user subscription information associated with the user IP address according to the inquiry response after the receiving sub-module receives the inquiry response sent by the PGW; if the PGW queries the user subscription information associated with the user IP address, after the receiving sub-module receives the credit control request information sent by the PGW, the user subscription information associated with the user IP address is extracted from the credit control request information.
Further, the obtaining sub-module is further configured to instruct the sending module to send an LTE PCC session establishment failure message when the PGW does not query the user subscription information associated with the user IP address.
Further, the subscriber subscription information includes the IMSI and related session information of the subscriber.
The invention also provides a system for establishing the LTE PCC session, which comprises the PCRF unit and the PGW, wherein: a PCRF unit configured to perform the above-mentioned operations; the PGW is used for providing user subscription information associated with a user IP address to the PCRF unit according to the query request sent by the PCRF unit; and executing the PCC rules after receiving the PCC rules sent by the PCRF unit.
Further, after receiving the query request sent by the PCRF unit, the PGW queries the user subscription information associated with the user IP address; if the user subscription information associated with the user IP address is inquired, sending an inquiry response to the PCRF unit to indicate that the inquiry is successful; and sending credit control request information to the PGW, wherein the credit control request information comprises user subscription information associated with the user IP address.
Further, the PGW is further configured to send, to the PCRF unit, a query response to indicate that the query fails if the user subscription information associated with the user IP address is not queried.
According to the LTE PCC session establishing method, the PCRF unit and the system, the LTE user can establish the LTE PCC session for the user based on the network element on the network side without going off the line, so that the user can dynamically adjust the QoS in real time, and the time delay for the user to acquire the QoS dynamic adjustment service or other services is reduced.
Drawings
Fig. 1 shows a flow chart of a method for establishing an LTE PCC session according to one embodiment of the invention.
Fig. 2 shows a flow diagram of a method for establishing an LTE PCC session according to another embodiment of the invention.
Fig. 3 shows a block diagram of a PCRF unit for establishing an LTE PCC session according to an embodiment of the present invention.
Fig. 4 shows a block diagram of a PCRF unit for establishing an LTE PCC session according to an embodiment of the present invention.
Fig. 5 shows a block diagram of a system for establishing an LTE PCC session according to an embodiment of the present invention.
Fig. 6 shows a block diagram of a PCRF device according to another embodiment of the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.
The invention provides a party which can initiate to establish LTE PCC (Policy control and Charging) session by PCRF (Policy and Charging rules function), thereby realizing functions of subsequent QoS management and control and the like. Fig. 1 shows a flow chart of a method for establishing an LTE PCC session according to one embodiment of the invention. As shown in fig. 1, the method mainly includes:
step 100, after receiving the session request, the PCRF unit extracts a user IP (internet protocol) address from the session request.
In one implementation, the PCRF pre-stores user IP address pool information configured by each PGW, where the address pool may specifically include an IP address range of each address pool and an Rx interface IP address of a corresponding PGW.
In one embodiment, the session request may be a request for QoS adjustment sent by an AF (Application Function) unit or sent by another network element, and the QoS adjustment request may further include QoS information.
In one embodiment, the session request may also be a location acquisition request message sent by other network elements.
Step 102, the PCRF queries a PGW corresponding to the user IP address.
In one embodiment, the step of querying the PGW corresponding to the IP address of the user may include: judging whether a PGW corresponding to the IP address of the user exists or not; if the PGW corresponding to the user IP address exists, a step of acquiring user subscription information associated with the user IP address from the PGW is executed; and if the PGW corresponding to the user IP address does not exist, sending an LTE PCC session establishment failure message to the application function unit.
For example, after receiving a session request sent by the AF, the PCRF searches for a corresponding PGW (Public Data Network Gateway) according to an IP address of a user, for example, when the PCRF is to initiate an LTE PCC session for a certain user, the PCRF searches for an IP address of the PGW corresponding to the user according to the IP address of the user.
Step 104, the PCRF acquires user subscription information associated with the user IP address from the PGW;
in one embodiment, this step may include sending a query request to the PGW, where the query request includes the user IP address, so that the PGW queries the user subscription information associated with the user IP address; after receiving a query response sent by the PGW, judging whether the PGW queries user subscription information associated with the user IP address according to the query response; and if the PGW inquires the user subscription information associated with the user IP address, after receiving the credit control request information sent by the PGW, extracting the user subscription information associated with the user IP address from the credit control request information.
In a specific embodiment, if the PGW does not query the user subscription information associated with the user IP address, the LTE PCC session establishment failure message is sent to the application function unit AF.
In one specific embodiment, the subscription information includes IMSI and related session information of the subscriber.
And step 106, the PCRF generates a corresponding PCC rule according to the user subscription information.
The invention provides a method for establishing LTE PCC conversation initiated by PCRF based on user IP address, aiming at the problem that the LTE PCC conversation can not be established again by the follow-up user in the service process when the current LTE user is initially accessed, if the LTE PCC conversation is not established by the follow-up user, a user address pool corresponding to each PGW is stored by PCRF, when the PCRF initiates the LTEPCC conversation establishment to a certain user according to the requirement, the corresponding PGW is searched according to the IP address of the user, then the LTE PCC conversation is initiated to the PGW, wherein the LTE PCC conversation is carried with the IP address of the user, the corresponding IMSI and the context information of the user are searched according to the IP address after the PGW receives the request, and the relevant information is sent to PCRF to complete the establishment of the LTE PCC conversation, thus, the user can establish the LTE PCC conversation for the user based on the network side without disconnecting the network element, and the user can dynamically adjust the QoS in real time, and the position information of the user can be obtained in time, and the time delay of the user for obtaining the QoS dynamic adjustment service or the position information service is reduced.
Fig. 2 shows a flow diagram of a method for establishing an LTE PCC session according to another embodiment of the invention. As shown in fig. 2, the method mainly includes:
step 201, the PCRF prestores the IP address pool information of each PGW and the Gx interface IP address with each PGW.
Specifically, the PCRF prestores user IP address pool information configured by each PGW, which may specifically include an IP address range of each address pool and an Rx interface IP address of a corresponding PGW.
In step 202, when an LTE user initially accesses an EPC (Evolved Packet Core) network, an LTE PCC session is not established for the user.
Step 203, the AF sends a session request to the PCRF, where the session request may be a request for adjusting QoS of a user, and the session request carries an IP address of the user.
In one embodiment, the session request may be a QoS adjustment request, a geographic location acquisition request, or the like. It should be noted that, although the AF sends the session request for adjusting the QoS of the user, the geographic location obtaining request, and the like to the PCRF for illustration, those skilled in the art will understand that the present invention is not limited thereto, and the session request may also be a session request sent by another network element.
And step 204, the PCRF queries the corresponding PGW according to the IP address of the user.
In one embodiment, when the PCRF fails to find the corresponding PGW according to the user IP address information, the LTE PCC session establishment fails.
Step 205, the PCRF sends an RAR (Re-Auth Request) message to the PGW, requesting to establish the LTE PCC session, where the RAR message carries the IP address of the user.
In step 206, the PGW searches for the IMSI and the relevant session information of the user according to the IP address of the user.
Specifically, the PGW searches for the IMSI of the user and session information thereof according to the IP address of the user, and sends a response message to the PCRF after finding the user information, where the response message carries the IMSI of the user and the related session information, to complete the LTE PCC session establishment; and when the PGW fails to find the IMSI and the related session information of the user according to the IP address of the user, the LTE PCC session is failed to be established.
Step 207, the PGW returns an RAA (Re-Auth Answer) message to the PCRF.
Step 208, the PGW sends a CCR (Credit Control Request) message to the PCRF, where the message carries the IMSI of the user and the relevant session information.
And step 209, the PCRF generates a PCC rule according to the subscription information of the user. In one embodiment, the subscriber subscription information includes the IMSI and related session information of the subscriber.
Step 210, the PCRF returns a CCA (Credit Control Answer) message, which carries the PCC rule, until the LTE PCC session establishment of the user is completed.
In step 211, the PCRF sends a session response to the AF.
Specifically, if the request sent by the AF is a QoS adjustment request, the session response includes QoS adjustment information.
The invention provides a method for establishing an LTE PCC conversation initiated by a PCRF based on a user IP address, which can enable an EPC user to establish the LTE PCC conversation for the user based on a network element at a network side without going off the line, enable the user to dynamically adjust QoS in real time, and also can timely obtain the position information of the user, thereby reducing the time delay for the user to obtain services such as QoS dynamic adjustment and the like.
Fig. 3 shows a block diagram of a PCRF unit for establishing an LTE PCC session according to an embodiment of the present invention. As shown in fig. 3, the PCRF unit 300 mainly includes: a receiving module 301, configured to extract a user IP address from a session request after receiving the session request; a query module 302, configured to query a PGW corresponding to an IP address of a user; an obtaining module 303, configured to obtain, from the PGW, user subscription information associated with the user IP address; a PCC rule generating module 304, configured to generate a corresponding PCC rule according to the user subscription information; a sending module 305, configured to send the PCC rule to the PGW, so that the PGW executes the PCC rule.
The PCRF unit of the embodiment of the invention can pre-store the IP address pool information of the PGW, and after receiving a QoS request or other requests based on LTE PCC conversation, the corresponding PGW is searched based on the IP address of the user in the conversation request, so that the PGW reestablishes the connection according to the PCC rule generated by the PCRF, the user can establish the LTE PCC conversation for the user based on the network element at the network side without disconnecting the network again, the user can dynamically adjust the QoS in real time, the current position information is timely obtained, and the time delay of the user for obtaining the QoS dynamic adjustment service is reduced.
Fig. 4 shows a block diagram of a PCRF unit for establishing an LTE PCC session according to an embodiment of the present invention. As shown in fig. 4, the query module 402 specifically determines whether a PGW corresponding to the user IP address exists; if the PGW corresponding to the user IP address exists, indicating an acquisition module to execute an operation of acquiring user subscription information associated with the user IP address from the PGW; and if the PGW corresponding to the user IP address does not exist, indicating the sending module to send an LTE PCC session establishment failure message.
In one embodiment, the obtaining module 403 includes a sending sub-module 4031, a receiving sub-module 4032, and an obtaining sub-module 4033, where: a sending sub-module 4031, configured to send an inquiry request to the PGW, where the inquiry request includes the user IP address, so that the PGW inquires user subscription information associated with the user IP address; a receiving submodule 4032, configured to receive a query response sent by the PGW; the obtaining sub-module 4033 is configured to, after the receiving sub-module 4032 receives the query response sent by the PGW, determine, according to the query response, whether the PGW queries the user subscription information associated with the user IP address; if the PGW queries the user subscription information associated with the user IP address, after receiving the credit control request information sent by the PGW, the receiving sub-module 4032 extracts the user subscription information associated with the user IP address from the credit control request information.
In an embodiment, the obtaining sub-module 4033 is further configured to instruct the sending module 405 to send an LTE PCC session establishment failure message when the PGW does not query the user subscription information associated with the user IP address.
In one embodiment, the subscriber subscription information includes the IMSI and related session information of the subscriber.
Fig. 5 shows a block diagram of a system for establishing an LTE PCC session according to an embodiment of the present invention. As shown in fig. 5, the LTE PCC session establishment system 500 mainly includes: PCRF unit 501 and PGW502, wherein: the PCRF unit 501 is the above-mentioned related PCRF unit, which is not described herein again; the PGW502 is configured to provide, to the PCRF unit 501, user subscription information associated with the user IP address according to the query request sent by the PCRF unit 501; after receiving the PCC rule sent by PCRF unit 501, the PCC rule is executed.
In one embodiment, the PGW502 specifically queries the user subscription information associated with the user IP address after receiving the query request sent by the PCRF unit 501; if the user subscription information associated with the user IP address is queried, a query response is sent to the PCRF unit 501 to indicate that the query is successful; credit control request information is sent to the PGW502, where the credit control request information includes user subscription information associated with the user IP address.
In one embodiment, the PGW502 is further configured to send a query response to the PCRF unit 501 to indicate that the query failed if the user subscription information associated with the user IP address is not queried.
Fig. 6 shows a block diagram of a PCRF device according to another embodiment of the present invention. The PCRF device 600 may be a host server with computing capabilities, a personal computer PC, or a portable computer, a mobile terminal or other terminal, etc. The specific embodiments of the present invention do not limit the specific implementation of the compute node.
The PCRF device 600 includes a processor (processor)601, a communication interface (communications interface)602, a memory (memory)603, and a bus 604. The processor 601, the communication interface 602, and the memory 603 communicate with each other via the bus 604.
The communication interface 602 is used to communicate with network devices, including, for example, virtual machine management centers, shared storage, and the like.
The processor 601 is used to execute programs. The processor 601 may be a central processing unit CPU or may be an application Specific integrated circuit asic or one or more integrated circuits configured to implement embodiments of the present invention.
The memory 603 is used for storing files. The memory 603 may comprise a high-speed RAM memory, and may further comprise a non-volatile memory (e.g., at least one disk memory). The memory 603 may also be a memory array. The memory 603 may also be partitioned, and the blocks may be combined into virtual volumes according to certain rules.
In one embodiment, the program may be a program code including computer operation instructions. The procedure is particularly useful for: after receiving a session request, extracting a user IP address from the session request; querying a PGW corresponding to the user IP address; acquiring user subscription information associated with the user IP address from the PGW; generating a corresponding PCC rule according to the user subscription information; and sending the PCC rule to the PGW so that the PGW executes the PCC rule.
In a specific embodiment, the step of querying the PGW corresponding to the IP address of the user includes: judging whether a PGW corresponding to the user IP address exists or not; if the PGW corresponding to the user IP address exists, executing a step of acquiring user subscription information associated with the user IP address from the PGW; and if the PGW corresponding to the user IP address does not exist, sending an LTE PCC session establishment failure message.
In a specific embodiment, the step of obtaining the user subscription information associated with the user IP address from the PGW includes: sending a query request to the PGW, wherein the query request includes the user IP address, so that the PGW queries user subscription information associated with the user IP address; after receiving a query response sent by the PGW, judging whether the PGW queries user subscription information associated with the user IP address according to the query response; and if the PGW inquires the user subscription information associated with the user IP address, after receiving credit control request information sent by the PGW, extracting the user subscription information associated with the user IP address from the credit control request information.
In a specific embodiment, if the PGW does not query the user subscription information associated with the user IP address, an LTE PCC session establishment failure message is sent.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may select different ways to implement the described functionality for specific applications, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
If the functionality is implemented in the form of computer software and sold or used as a stand-alone product, it is considered that all or part (e.g., a part contributing to the prior art) of the technical solution of the present invention is embodied in the form of a computer software product to some extent. The computer software product is generally stored in a non-volatile storage medium readable by a computer and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the methods according to the embodiments of the present invention. The storage medium includes various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (13)
1. A method for establishing an LTE Policy Control and Charging (PCC) session, comprising:
after receiving a session request, a Policy and Charging Rule Function (PCRF) unit extracts a user IP address from the session request; the session request comprises a request for adjusting the quality of service (QoS) sent by an application function unit (AF), a request for adjusting the QoS sent by other network elements, or position acquisition request information sent by other network elements;
the PCRF unit inquires a public data network gateway (PGW) corresponding to the user IP address;
the PCRF unit acquires user subscription information associated with the user IP address from the PGW;
the PCRF unit generates a corresponding PCC rule according to the user subscription information;
the PCRF unit sends the PCC rules to the PGW so that the PGW executes the PCC rules.
2. The method of claim 1,
the step of querying the PGW corresponding to the user IP address by the PCRF unit includes:
the PCRF unit judges whether a PGW corresponding to the user IP address exists or not;
if a PGW corresponding to the user IP address exists, the PCRF unit performs a step of acquiring, from the PGW, user subscription information associated with the user IP address;
and if the PGW corresponding to the user IP address does not exist, the PCRF unit sends an LTE PCC session establishment failure message.
3. The method according to claim 1 or 2,
the step of the PCRF unit obtaining, from the PGW, user subscription information associated with the user IP address includes:
the PCRF unit sends a query request to the PGW, wherein the query request includes the user IP address, so that the PGW queries user subscription information associated with the user IP address;
after receiving a query response sent by the PGW, the PCRF unit judges whether the PGW queries user subscription information associated with the user IP address according to the query response;
if the PGW queries the user subscription information associated with the user IP address, the PCRF unit extracts the user subscription information associated with the user IP address from the credit control request information after receiving the credit control request information sent by the PGW.
4. The method of claim 3,
and if the PGW does not inquire the user subscription information associated with the user IP address, the PCRF unit sends an LTE PCC session establishment failure message.
5. The method according to claim 1 or 2,
the user subscription information includes the IMSI and related session information of the user.
6. A policy and charging rules function, PCRF, unit for establishing an LTE policy control and charging, PCC, session, comprising:
the receiving module is used for extracting the IP address of the user from the session request after receiving the session request; the session request comprises a request for adjusting the quality of service (QoS) sent by an application function unit (AF), a request for adjusting the QoS sent by other network elements, or position acquisition request information sent by other network elements;
the query module is used for querying a public data network gateway (PGW) corresponding to the user IP address;
an obtaining module, configured to obtain, from the PGW, user subscription information associated with the user IP address;
a PCC rule generating module, configured to generate a corresponding PCC rule according to the user subscription information;
a sending module, configured to send the PCC rule to the PGW, so that the PGW executes the PCC rule.
7. The PCRF unit of claim 6,
the query module specifically judges whether a PGW corresponding to the user IP address exists; if the PGW corresponding to the user IP address exists, indicating an acquisition module to execute an operation of acquiring user subscription information associated with the user IP address from the PGW; and if the PGW corresponding to the user IP address does not exist, indicating the sending module to send an LTE PCC session establishment failure message.
8. The PCRF unit of claim 6 or 7, wherein the obtaining module comprises a sending submodule, a receiving submodule and an obtaining submodule, wherein:
a sending sub-module, configured to send a query request to the PGW, where the query request includes the user IP address, so that the PGW queries user subscription information associated with the user IP address;
the receiving submodule is used for receiving the query response sent by the PGW;
the obtaining sub-module is used for judging whether the PGW inquires the user subscription information associated with the user IP address according to the inquiry response after the receiving sub-module receives the inquiry response sent by the PGW; if the PGW queries the user subscription information associated with the user IP address, after the receiving sub-module receives the credit control request information sent by the PGW, the user subscription information associated with the user IP address is extracted from the credit control request information.
9. The PCRF unit of claim 8,
the obtaining sub-module is further configured to instruct the sending module to send an LTE PCC session establishment failure message when the PGW does not query the user subscription information associated with the user IP address.
10. The PCRF unit of claim 6 or 7,
the user subscription information includes the IMSI and related session information of the user.
11. A system for establishing an LTE PCC session, comprising a PCRF unit and a PGW, wherein:
the PCRF unit is the PCRF unit as referred to in any of claims 6-10;
the PGW is used for providing user subscription information associated with a user IP address to the PCRF unit according to the query request sent by the PCRF unit; and executing the PCC rules after receiving the PCC rules sent by the PCRF unit.
12. The system of claim 11,
after receiving the query request sent by the PCRF unit, the PGW queries user subscription information associated with the user IP address; if the user subscription information associated with the user IP address is inquired, sending an inquiry response to the PCRF unit to indicate that the inquiry is successful; and sending credit control request information to the PGW, wherein the credit control request information comprises user subscription information associated with the user IP address.
13. The system of claim 12,
the PGW is further configured to send a query response to the PCRF unit to indicate that the query fails if the user subscription information associated with the user IP address is not queried.
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| CN102868988A (en) * | 2011-07-05 | 2013-01-09 | 中国电信股份有限公司 | Policy charging control-based business processing method and system in wireless network |
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| CN101471797A (en) * | 2008-03-31 | 2009-07-01 | 华为技术有限公司 | Decision-making method and system as well as policy decision unit |
| CN102868988A (en) * | 2011-07-05 | 2013-01-09 | 中国电信股份有限公司 | Policy charging control-based business processing method and system in wireless network |
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