WO2016173363A1

WO2016173363A1 - Method, system and apparatus for making policy rule

Info

Publication number: WO2016173363A1
Application number: PCT/CN2016/077902
Authority: WO
Inventors: 周晓云; 宗在峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-04-29
Filing date: 2016-03-30
Publication date: 2016-11-03
Also published as: CN106211116A

Abstract

The present invention provides a method, system and apparatus for making a policy rule. The method comprises: a protocol converter (PC) or an application access control (AAC) function provides, if private network stream description information mapped by the PC or the AAC function according to public network stream description information in two or more pieces of public network service description information provided by an AF is identical, private network service description information to a PCRF, wherein the private network stream description information and accumulative request bandwidth information are carried, and the accumulative request bandwidth information is generated according to request bandwidth information in the two or more pieces of public network service description information; and the PCRF makes, according to the private network stream description information and the accumulative request bandwidth information, a PCC rule. The problem of incorrect resource reservation and resource control caused by of a user terminal for a plurality of service accesses initiated for a service simultaneously is solved, and resource reservation and control of a user terminal for a plurality of service accesses initiated for a service simultaneously are achieved.

Description

Strategy rule making method, system and device

Technical field

The present invention relates to the field of communications, and in particular to a method, system and apparatus for formulating policy rules.

Background technique

1 is a schematic diagram of a PCC architecture according to the related art. As shown in FIG. 1, FIG. 1 is a policy and charging control architecture defined by a 3rd Generation Partnership Project (3GPP). Referred to as PCC).

Policy and Charging Rules Function (PCRF) is used to formulate Quality of Service (QoS) and charging policies for services using network resources. The PCRF needs to combine the service information received from the Application Function (AF), the user subscription information received from the Subscription Profile Repository (SPR), and the policy configured by the operator. The PCRF sends the control policy for the service to the Policy and Charging Enforcement Function (PCEF) or the Bearer Binding and Event Report Function (BBERF). At the same time, the PCRF can subscribe to the bearer layer related events to the PCEF and/or the BBERF to sense in time when the bearer layer occurs, and change the control strategy. In addition, the PCEF and the Traffic Detection Function (TDF) can perform application detection and control functions according to the PCC rules (PCEF) or Application Detection Control (ADC) rules (TDF) delivered by the PCRF. .

With the development of the mobile Internet, operators need to communicate with third-party data application providers to provide QoS for services provided by third-party data application providers. 2 is a schematic diagram of a PCC architecture of Application Access Control (AAC) according to the related art. As shown in FIG. 2, the Diameter protocol adopted by the RX interface supported by the PCC is currently used for most third-party data. For application providers, they are better at developing based on SOAP and REST protocols. Currently, the industry research PCC architecture supports the Rx interface based on the SOAP/REST protocol. A logic function called Protocol Converter (PC) is directly set up in the PCRF and AF to convert the SOAP or REST protocol into a Diameter. In the embodiment of the present invention, some access control functions may be added to the PC to better implement the access control of the third-party data application by the operator. The logic function is also referred to as an AAC functional entity.

FIG. 3 is a schematic diagram of a PCC architecture of a NAT according to the related art. As shown in FIG. 3, in order to solve the problem of shortage of an IP address, an operator usually follows a PDN (Pocket Data Network Gateway, P-GW for short). Network Address Translation (NAT) is deployed. Because the NAT exists, the same PDN connection carries the private IP address and port number used inside the Evolved Packet Core (EPC), which is different from the public IP address and port number used in the external packet network. . In the related art, the service information that the AF provides to the PCRF for formulating the PCC rule is based on the transformed IP address in the external packet network. And the port number. First, the PCRF cannot associate the AF session with the IP-connectivity Access Network (IP-CAN) according to the public IP address provided by the AF and the private IP address provided by the PCEF. Secondly, if PCRF According to the external IP address and port number, the filter template in the PCC rule is provided to the PCEF or BBERF for execution, and the PCEF or BBERF will not be able to match the correct data stream.

In order to solve the above problem, a solution is proposed in the related art, that is, the NAT sends the address translation mapping table to the PCRF, and the PCRF can find the corresponding private network IP address and port number according to the mapping table and the information provided by the AF. However, this scheme requires an interworking mechanism between NAT and PCRF, which has a great impact on the existing network.

The related technologies also propose two implementations that have less impact on the existing network. (1) Configure the same public network source IP address, public network source port number segment, and private network source IP address on the NAT and AAC or PCRF. Correspondence. The AAC and the PCRF can uniquely determine the private network source IP address based on the public network source IP address and the public network source port number. (2) The PCEF inserts the private network IP address of the UE in the header of the packet data packet sent by the UE, and the AF provides the private network IP address of the UE when providing the service information to the PCRF, so that the PCRF can be based on the private network IP address. Make a session association. However, the above two implementations can only perform session binding. Because the PCRF cannot obtain the private network source port number of the service, the UE may not be able to perform correct resource reservation and resource control for multiple service access initiated by one UE at the same time. Two HTTP service requests are initiated simultaneously to the same service. The private IP addresses, server IP addresses, and server port numbers of the service data flows of the two services are the same. In the existing mechanism, the PCRF cannot deliver the correct PCC rules for resource reservation and control for two simultaneous service accesses.

In the related art, the problem that the user terminal may initiate correct resource reservation and resource control for multiple service access initiated by one service at the same time has not yet proposed an effective solution.

Summary of the invention

The invention provides a method, a system and a device for formulating a policy rule to solve at least the problem that the user terminal may not perform correct resource reservation and resource control for multiple service access initiated by a user terminal simultaneously for one service.

According to an embodiment of the present invention, a policy rule setting method is provided, if the protocol converter PC or the application access control function AAC is based on the public network in two or more public network service description information provided by the application function AF If the flow description information is the same as the private network flow description information, the PC or the AAC provides the private network service description information to the policy and charging rule function PCRF, where the private network flow description information and the accumulated request bandwidth information are carried. The cumulative request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information;

The PCRF formulates a PCC rule according to the private network flow description information and the accumulated request bandwidth information.

In the embodiment of the present invention, the PC or the AAC is configured with a mapping table of the same private network IP address as the network address translation device NAT to the public network IP address and the public network source port number segment.

In the embodiment of the present invention, the PC or the AAC determines a private network IP address according to the mapping table and the source port number and the source IP address in the two or more public network flow description information. And replacing the source IP address with the private network IP address, and the source port is replaced by the flow description information generated after the wildcard is the same.

In the embodiment of the present invention, the cumulative request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information, including:

The accumulated request bandwidth information is a sum or a maximum value of the requested bandwidth information in the two or more public network service description information.

According to another embodiment of the present invention, a method for formulating a policy rule is further provided, including:

The PCRF according to the public network flow description information in the two or more public network service description information provided by the AF is the same as the private network flow description information, and the PCRF according to the private network flow description information and the cumulative request The bandwidth information defines a PCC rule, wherein the accumulated request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information.

In the embodiment of the present invention, a mapping table of a private network IP address consistent with a network address translation device NAT to a public network IP address and a public network source port number segment is configured on the PCRF.

In the embodiment of the present invention, the PCRF determines a private network IP address according to the mapping table and the source port number and the source IP address in the two or more public network flow description information, and the The source IP address is replaced with the private network IP address, and the flow port description information generated after the source port is replaced by the wildcard is the same.

According to another embodiment of the present invention, a policy rule making system is further provided, including:

The PC or the AAC is configured to provide the private network service description information to the PCRF when the description information of the private network flow mapped by the public network flow description information in the two or more public network service description information provided by the AF is the same. Carrying the private network flow description information and the cumulative request bandwidth information, where the accumulated request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information;

The PCRF is configured to formulate a PCC rule according to the private network flow description information and the accumulated request bandwidth information.

In the embodiment of the present invention, a mapping table between a private network IP address and a public network IP address and a public network source port number segment that are consistent with the network address translation device NAT is configured on the PC or the AAC.

In the embodiment of the present invention, the PC or the AAC determines the private network IP address according to the mapping table and the source port number and the source IP address in the two or more public network flow description information, and The source IP address is replaced with the private network IP address, and the flow port description information generated after the source port is replaced by the wildcard is the same.

In an embodiment of the present invention, the PC or the AAC sets the sum or maximum value of the requested bandwidth information in the two or more public network service description information to the accumulated request bandwidth information.

According to another embodiment of the present invention, there is also provided a PC or AAC device, comprising:

a receiving module, configured to receive public network flow description information in two or more public network service description information provided by the AF;

The first mapping module is configured to map the public network flow description information in the two or more public network service description information into the private network flow description information;

a sending module: when the mapped private network flow description information is the same, providing the private network service description information to the PCRF, where the private network flow description information and the accumulated request bandwidth information are carried, where the accumulated request bandwidth information is The request bandwidth information in the two or more public network service description information is generated.

In an embodiment of the present invention, the apparatus further includes a first configuration module configured to configure a mapping table of the private network IP address consistent with the network address translation device NAT to the public network IP address and the public network source port number segment.

In an embodiment of the invention, the device further includes:

The first mapping module determines the private network IP address according to the mapping table configured by the first configuration module and the source port number and the source IP address in the two or more public network flow description information received by the receiving module. And replacing the source IP address with the private network IP address, and the source port is replaced by the flow description information generated after the wildcard is the same.

In an embodiment of the present invention, the sending module sets the accumulated request bandwidth information to a sum or a maximum value of the requested bandwidth information in the two or more public network service description information.

According to another embodiment of the present invention, there is also provided a PCRF device, comprising:

The second mapping module is configured to map the public network flow description information in the two or more public network service description information provided by the AF into the private network flow description information;

a setting module, configured to: when the mapping of the private network flow description information is the same, formulating a PCC rule according to the private network flow description information and the accumulated request bandwidth information, where the cumulative request bandwidth information is according to the two Or request bandwidth information generated in two or more public network service description information.

In an embodiment of the present invention, the second configuration module is further configured to be configured to configure a mapping table of the private network IP address consistent with the network address translation device NAT to the public network IP address and the public network source port number segment.

According to the present invention, if the private network flow description information mapped by the public network flow description information in the two or more public network service description information provided by the AF is the same, if the protocol converter PC or the application access control function AAC is the same, The PC or the AAC provides the private network service description information to the PCRF, where the private network flow description information and the accumulated request bandwidth information are carried, wherein the accumulated request bandwidth information is based on the requested bandwidth in the two or more public network service description information. Information generation, the PCRF formulates a PCC rule according to the private network flow description information and the accumulated request bandwidth information, and solves the problem that the user terminal may not perform correct resource reservation and resource control for multiple service access initiated by one user at the same time. User terminal Resource reservation and control for multiple service access initiated by one service at the same time.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a PCC architecture according to the related art;

2 is a schematic diagram of a PCC architecture of an AAC according to the related art;

3 is a schematic diagram of a PCC architecture of a NAT according to the related art;

4 is a flowchart of a method for formulating a policy rule according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of a PC or AAC device according to an embodiment of the present invention; FIG.

6 is a structural block diagram of a PCRF device according to an embodiment of the present invention;

7 is a flowchart 1 of implementing a PCRF to formulate a PCC rule according to a preferred embodiment of the present invention;

8 is a flow chart 2 of implementing a PCRF to formulate PCC rules in accordance with a preferred embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

A method for formulating a policy rule is provided in this embodiment. FIG. 4 is a flowchart of a method for formulating a policy rule according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:

Step S402, if the protocol converter PC or the application access control function AAC maps the private network flow description information into the same according to the public network flow description information in the two or more public network service description information provided by the application function AF, The PC or the AAC provides the private network service description information to the policy and charging rule function PCRF, where the private network flow description information and the accumulated request bandwidth information are carried, wherein the accumulated request bandwidth information is based on the two or more public network services. Request bandwidth information generation in the description information;

Step S404, the PCRF formulates a PCC rule according to the private network flow description information and the accumulated request bandwidth information.

Through the above steps, if the protocol converter PC or the application access control function AAC maps the private network flow description information into the same according to the public network flow description information in the two or more public network service description information provided by the AF, The PC or the AAC provides the private network service description information to the PCRF, where the private network flow description information and the accumulated request bandwidth information are carried, wherein the accumulated request bandwidth information is based on the requested bandwidth information in the two or more public network service description information. Generated, the PCRF The PCC rule is formulated according to the private network flow description information and the accumulated request bandwidth information, which solves the problem that the user terminal may not perform correct resource reservation and resource control for multiple service access initiated by one user at the same time, and implements the user terminal pair. Resource reservation and control of multiple service access initiated by one service at the same time.

In this embodiment, the PC or the AAC is configured with a mapping table of the same private network IP address as the network address translation device NAT to the public network IP address and the public network source port number segment.

In this embodiment, the PC or the AAC determines a private network IP address according to the mapping table and the source port number and the source IP address in the two or more public network flow description information, and the source IP address is obtained. Replace the IP address with the private network. The source port is replaced with the same flow description information generated after the wildcard.

In this embodiment, the accumulated request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information, including:

In an embodiment of the present invention, a method for formulating a policy rule is further provided, including:

The PCRF is configured according to the public network flow description information mapped by the public network flow description information in the two or more public network service description information provided by the AF, and the PCRF is determined according to the private network flow description information and the accumulated request bandwidth information. The PCC rule, wherein the accumulated request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information.

In this embodiment, a mapping table between the private network IP address and the public network source port number and the public network source port number segment that is consistent with the network address translation device NAT is configured on the PCRF.

In this embodiment, the PCRF determines a private network IP address according to the mapping table and the source port number and the source IP address in the two or more public network flow description information, and replaces the source IP address with the source IP address. The private network IP address is the same as the flow description information generated after the source port is replaced with the wildcard.

In an embodiment of the present invention, a policy rule making system is further provided, which includes:

The PC or the AAC is configured to provide the private network service description information to the PCRF when the description information of the private network flow mapped by the public network flow description information in the two or more public network service description information provided by the AF is the same. Carrying the private network flow description information and the accumulated request bandwidth information, where the accumulated request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information;

In this embodiment, the private network IP address that is consistent with the NAT of the network address translation device is configured on the PC or the AAC. A mapping table between the network IP address and the public network source port number segment.

In this embodiment, the PC or the AAC determines the private network IP address according to the mapping table and the source port number and the source IP address in the two or more public network flow description information, and replaces the source IP address. The IP address of the private network is the same as the flow description information generated after the source port is replaced with the wildcard.

In this embodiment, the PC or the AAC sets the sum or maximum value of the requested bandwidth information in the two or more public network service description information to the accumulated request bandwidth information.

In the embodiment, a PC or an AAC device and a PCRF device are provided, which are used to implement the above-mentioned embodiments and preferred embodiments, and are not described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 5 is a structural block diagram of a PC or an AAC device according to an embodiment of the present invention. As shown in FIG. 5, the device includes:

The receiving module 52 is configured to receive public network flow description information in two or more public network service description information provided by the AF;

The first mapping module 54 is configured to map the public network flow description information in the two or more public network service description information into the private network flow description information;

The sending module 56: when the mapped private network flow description information is the same, the private network service description information is provided to the PCRF, where the private network flow description information and the accumulated request bandwidth information are carried, where the accumulated request bandwidth information is according to the two Or request bandwidth information generated in two or more public network service description information.

In this embodiment, the apparatus further includes a first configuration module configured to configure a mapping table of the private network IP address consistent with the network address translation device NAT to the public network IP address and the public network source port number segment.

In this embodiment, the device further includes:

The first mapping module 54 determines the private network IP address according to the mapping table configured by the first configuration module and the source port number and the source IP address in the two or more public network flow description information received by the receiving module, and The source IP address is replaced with the private network IP address, and the source port is replaced with the same flow description information generated after the wildcard.

In this embodiment, the sending module 56 sets the accumulated request bandwidth information as the sum or maximum value of the requested bandwidth information in the two or more public network service description information.

FIG. 6 is a structural block diagram of a PCRF device according to an embodiment of the present invention. As shown in FIG. 6, the device includes:

The second mapping module 62 is configured to map the public network flow description information in the two or more public network service description information provided by the AF into the private network flow description information.

The setting module 64 is configured to: when the mapped private network flow description information is the same, formulate a PCC rule according to the private network flow description information and the accumulated request bandwidth information, wherein the accumulated request bandwidth information is based on the two or more Request bandwidth information generation in the public network service description information.

In this embodiment, the second configuration module is further configured to be configured to configure a mapping table between the private network IP address and the public network source port number and the public network source port number segment that are consistent with the NAT of the network address translation device.

The invention will now be described in detail in connection with the preferred embodiments.

Embodiment 1

In this embodiment, the private network source IP address is provided to the PCRF by configuring the corresponding relationship between the public network IP address, the public network source port number, and the private network IP address on the AAC, and the AAC accumulates the bandwidth requested by the AF. Resource reservation for business data streams. A mapping table between a private network IP address and a public network IP address and a public network source port number segment is configured on both the NAT and the AAC. (In the embodiment of the present invention, the source IP address, the source port number, the destination IP address, and the destination port number are all for the uplink direction).

FIG. 7 is a flowchart 1 of implementing a PCRF to formulate a PCC rule according to a preferred embodiment of the present invention, as shown in FIG.

Step 701: The UE attaches to the network to establish an IP-CAN session. In this process, a Gx session for policy and charging control is established between the PCEF and the PCRF. If the IP-CAN session involves BBERF, a gateway control session for policy control is established between the BBERF and the PCRF.

Step 702: The UE initiates a service access. After the service packet passes the NAT, the source IP address (that is, the private IP address of the UE) and the source port number (represented as the private network source port number 1) in the quintuple of the data packet are translated into the public IP address by NAT. And the public network source port number (represented as the public network source port number 1). The NAT maps the private network IP address to the corresponding public network IP address according to the mapping table of the private IP address to the public network IP address and the public network source port number segment, and selects the corresponding public network source port number segment. Replace the private network source port number with a port number. The application server obtains the packet quintuple.

Step 703: The AF sends an HTTP POST message to the AAC, where the message carries the service description information and the public network IP address. The service description information includes the service description information identifier 1, the flow description information, the media type, and the requested bandwidth information. The flow description information is the quintuple of the data packet acquired by the application server in step 802.

Step 704: The AAC determines the private network IP according to the mapping table of the configured private network IP address to the public network IP address and the public network source port number segment, and the public network source port number and the public network IP address in the flow description provided by the AF. address. The AAC adjusts the flow description information in the service description, and the source address is changed to the private network IP address, and the source port number is modified to the wildcard.

Step 705: The AAC sends an AAR message to the PCRF, where the message carries the service description information, the private network IP address, and the public network IP address.

Step 706: After the PCRF saves the information, a confirmation message is returned.

Step 707: The AAC returns an acknowledgement message to the AF.

Step 708: The PCRF formulates the PCC rule 1 according to the service information, the network policy, and the user subscription information. The flow description information carried in the PCC rule 1 (that is, the service data flow template) is the flow description information provided by the AAC. The QoS information carried in the PCC rule 1 includes a QoS Class Identifier (QCI), and an Allocation And Retention Priority (ARP). If the QCI defined by the PCRF is GBR-QCI, the QoS information includes a Guaranteed Bit Rate (GBR) and a Maximum Bit Rate (MBR); if the QCI is a non-guaranteed bit Rate (Non-GBR) QCI, the MBR may be included in the QoS information, and the value is set according to the requested bandwidth information. If the BBERF exists, the PCRF also formulates the QoS rule 1 according to the PCC rule 1.

Step 709: The PCRF provides QoS rule 1 to the BBERF;

Step 710: The PCRF provides PCC rule 1 to the PCEF;

Step 711: The UE initiates a service access again. After the service packet passes the NAT, the source IP address (that is, the private IP address of the UE) and the source port number (represented as the private network source port number 2) in the quintuple of the packet header are translated into the public IP address by NAT. And public network source port number (expressed as source port number 2). The NAT maps the private network IP address to the corresponding public network IP address according to the mapping table of the private IP address to the public network IP address and the public network source port number segment, and selects the corresponding public network source port number segment. Replace the private network source port number with a port number. The application server obtains the packet quintuple.

Step 712: The AF sends an HTTP PUT message to the AAC, where the message carries the service description information and the public network IP address. The service description information includes the service description information identifier 2, the flow description information, the media type, and the requested bandwidth information. The flow description information is the quintuple of the data packet acquired in the application server in step 811.

Step 713: The AAC determines the private network IP according to the mapping table of the configured private network IP address to the public network IP address and the public network source port number segment, and the public network source port number and public network IP address in the flow description provided by the AF. address. The AAC adjusts the flow description information in the service description, and the source address is changed to the private network IP address, and the source port number is modified to the wildcard. Since the AAC-adjusted flow description information is consistent with the step 804, the AAC determines the service description information before the update, that is, the new service description information includes the adjusted flow description information, the media type, and the requested bandwidth information (where the bandwidth information is requested). The sum of the bandwidth information requested for two AFs or the larger of the bandwidth information for two AF requests).

Step 714: The AAC sends an AAR message to the PCRF, and updates the previous service description information, where the message carries the service flow description information, the public network IP address, the private network IP address, and the new request bandwidth information.

Step 715: After the PCRF saves the information, a confirmation message is returned.

Step 716: The AAC returns an acknowledgement message to the AF.

Step 717: The PCRF updates the PCC Rule 1 according to the updated service description information. The QoS information carried in the PCC rule 1 includes QCI and ARP. If the QCI defined by the PCRF is GBR-QCI, the QoS information includes the GBR and the MBR, and the GBR and the MBR are respectively set according to the new request bandwidth information; if the QCI defined by the PCRF is the Non-GBR QCI, the QoS information may be included. MBR, and the MBR is set according to the new request bandwidth information. If BBERF exists, the PCRF also formulates QoS rules according to PCC Rule 1.

Step 718: The PCRF provides an updated QoS rule 1 to the BBERF;

Step 719: The PCRF provides an update PCC rule 1 to the PCEF;

Because of the above process, the PCRF ensures that two service accesses are normally performed by formulating a cumulative resource reserved for two service accesses by a PCC rule.

The foregoing embodiment only describes the case where the UE initiates two service accesses at the same time. For the case of more than two times, the process is similar, and details are not described herein again.

Embodiment 2

In the preferred embodiment, the corresponding private network source IP address is obtained by configuring the correspondence between the public network IP address, the public network source port number, and the private network IP address on the PCRF, and the bandwidth requested by the AFF is accumulated by the PCRF. To achieve resource reservation for business data streams. In the following embodiments, a mapping table between a private network IP address and a public network IP address and a public network source port number segment is fixedly configured on the NAT and the PCC.

FIG. 8 is a second flowchart of implementing a PCRF to formulate a PCC rule according to a preferred embodiment of the present invention, as shown in FIG.

Step 801: The UE attaches to the network to establish an IP-CAN session. In this process, a Gx session for policy and charging control is established between the PCEF and the PCRF. If the IP-CAN session involves BBERF, a gateway control session for policy control is established between the BBERF and the PCRF.

Step 802: The UE initiates a service access. After the service packet passes the NAT, the source IP address (that is, the private IP address of the UE) and the source port number (represented as the private network source port number 1) in the quintuple of the packet header are translated into the public IP address by NAT. And the public network source port number (represented as the public network source port number 1). The NAT maps the private network IP address to the corresponding public network IP address according to the mapping table of the private IP address to the public network IP address and the public network source port number segment, and selects the corresponding public network source port number segment. Replace the private network source port number with a port number. The application server obtains the packet header quintuple.

Step 803: The AF sends an AAR message to the PCRF, where the message carries the service description information and the public network IP address. The service description information includes flow description information, media type, and requested bandwidth information. The stream description information is the quintuple of the data packet obtained in step 902. The PCRF determines the private network IP address based on the mapping between the configured private IP address to the public network IP address and the public network source port number segment, and the public network source port number and public network IP address in the flow description provided by the AF. The PCRF adjusts the flow description information in the service description to change the source address to the private network IP address, and the source port number is modified to wildcard.

Step 804: After the PCRF saves the information, a confirmation message is returned.

Step 805: The PCRF formulates the PCC rule 1 according to the service information, the network policy, and the user subscription information, where the carried flow description information (that is, the service data flow template) in the PCC rule 1 is the flow description information provided by the AF. The QoS information carried in the PCC rule 1 includes QCI and ARP. If the QCI defined by the PCRF is GBR-QCI, the QoS information includes the GBR and the MBR, and the value is set according to the requested bandwidth information provided by the AF; if the QCI defined by the PCRF is the Non-GBR QCI, the QoS information may include the MBR. The value is set according to the requested bandwidth information provided by the AF. If BBERF exists, the PCRF also formulates QoS rules according to PCC Rule 1.

Step 806: Optionally, the PCRF provides QoS rule 1 to the BBERF;

Step 807: The PCRF provides PCC rule 1 to the PCEF;

Step 808: The UE initiates a service access again. After the service packet passes the NAT, the source IP address (that is, the private IP address of the UE) and the source port number (represented as the private network source port number 2) in the quintuple of the data packet are translated into the public IP address by NAT. And the public network source port number (represented as the public network source port number 2). The NAT maps the private network IP address to the corresponding public network IP address according to the mapping table of the private IP address to the public network IP address and the public network source port number segment, and selects the corresponding public network source port number segment. Replace the private network source port number with a port number. The application server obtains the packet quintuple.

Step 809: The AF sends an AAR message to the PCRF, where the message carries the service description information and the public network IP address. The service description information includes flow description information, media type, and requested bandwidth information. The flow description information is the quintuple of the data packet acquired by the application server in step 908.

Step 810: The PCRF determines the private network IP according to the mapping table of the configured private network IP address to the public network IP address and the public network source port number segment, and the public network source port number and the public network IP address in the flow description provided by the AF. address. The PCRF adjusts the flow description information in the service description to change the source address to the private network IP address, and the source port number is modified to wildcard.

Step 811: After the PCRF saves the information, a confirmation message is returned.

Step 812: Since the PCRF adjusted flow description information is the same as the flow description information in step 903, the PCRF updates the PCC rule 1 in step 808 according to the service information, the network policy, and the user subscription information, wherein the updated The flow description letter carried in PCC rule 1 is consistent with that before the update. The QoS information carried in the PCC rule 1 includes QCI and ARP. If the QCI defined by the PCRF is GBR-QCI, the QoS information includes the GBR and the MBR, and the GBR and the MBR are respectively set according to the bandwidth of the AF request twice, that is, the sum of the bandwidth information of the two AF requests or twice. The larger value of the bandwidth information requested by the AF; if the QCI defined by the PCRF is the Non-GBR QCI, the QoS information may include the MBR, and the value of the MBR is set according to the bandwidth of the two requests of the AF, that is, two AF requests. The sum of the bandwidth information is either the larger of the bandwidth information of the two AF requests. If BBERF exists, the PCRF also formulates QoS rules according to PCC Rule 1.

Step 813: The PCRF provides an updated QoS rule 1 to the BBERF;

Step 814: The PCRF provides an update PCC Rule 1 to the PCEF.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of various embodiments of the present invention.

Embodiments of the present invention also provide a storage medium. Optionally, in this embodiment, the foregoing storage medium may be Set to store program code for performing the above embodiments:

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in the embodiment, the processor executes the method of the above embodiment according to the stored program code in the storage medium.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

According to the foregoing technical solution provided by the embodiment of the present invention, if the protocol converter PC or the application access control function AAC maps the public network according to the public network flow description information in the two or more public network service description information provided by the AF If the flow description information is the same, the PC or the AAC provides the private network service description information to the PCRF, where the private network flow description information and the accumulated request bandwidth information are carried, where the accumulated request bandwidth information is based on the two or more public network services. The request bandwidth information is generated in the description information, and the PCRF formulates a PCC rule according to the private network flow description information and the accumulated request bandwidth information, and solves that multiple service access initiated by the user terminal for one service may not be able to perform correct resource reservation. And the problem of resource control, realizing the resource reservation and control of multiple service access initiated by the user terminal to one service at the same time.

Claims

A method for formulating policy rules, including:

If the private network flow description information mapped by the protocol converter PC or the application access control function AAC is the same according to the public network flow description information in the two or more public network service description information provided by the application function AF, the PC Or the AAC provides the private network service description information to the policy and charging rule function PCRF, where the private network flow description information and the accumulated request bandwidth information are carried, where the accumulated request bandwidth information is based on the two or more public networks. Request bandwidth information generation in the service description information;

The PCRF formulates a PCC rule according to the private network flow description information and the accumulated request bandwidth information.
The method of claim 1 comprising:

A mapping table between the private IP address of the network address translation device NAT and the public network IP address and the public network source port number segment is configured on the PC or the AAC.
The method of claim 2, comprising:

Determining, by the PC or the AAC, the private network IP address according to the source port number and the source IP address in the mapping table and the two or more public network flow description information, and replacing the source IP address In the private network IP address, the flow description information generated after the source port is replaced by the wildcard is the same.
The method according to claim 1, wherein the cumulative request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information, including:

The accumulated request bandwidth information is a sum or a maximum value of the requested bandwidth information in the two or more public network service description information.
A method for formulating policy rules, including:

The PCRF according to the public network flow description information in the two or more public network service description information provided by the AF is the same as the private network flow description information, and the PCRF according to the private network flow description information and the accumulated request bandwidth information. A PCC rule is formulated, wherein the accumulated request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information.
The method according to claim 5, wherein a mapping table of a private network IP address consistent with the network address translation device NAT to the public network IP address and the public network source port number segment is configured on the PCRF.
The method of claim 6 comprising:

The PCRF determines a private network IP address according to the mapping table and the source port number and the source IP address in the two or more public network flow description information, and replaces the source IP address with the private IP address. The network IP address is the same as the flow description information generated after the source port is replaced by the wildcard.
The method according to claim 5, wherein the cumulative request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information, including:

The accumulated request bandwidth information is a sum or a maximum value of the requested bandwidth information in the two or more public network service description information.
A policy rulemaking system that includes:

The PC or the AAC is configured to provide the private network service description information to the PCRF when the description information of the private network flow mapped by the public network flow description information in the two or more public network service description information provided by the AF is the same. Carrying the private network flow description information and the cumulative request bandwidth information, where the accumulated request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information;

The PCRF is configured to formulate a PCC rule according to the private network flow description information and the accumulated request bandwidth information.
The system according to claim 9, wherein the mapping form of the private network IP address consistent with the network address translation device NAT to the public network IP address and the public network source port number segment is configured on the PC or the AAC.
The system according to claim 9, wherein the PC or the AAC determines the private network IP address according to the mapping table and the source port number and the source IP address in the two or more public network flow description information. And replacing the source IP address with the private network IP address, and the source port is replaced by the flow description information generated after the wildcard is the same.
The system according to claim 9, wherein the PC or the AAC sets the sum or maximum value of the requested bandwidth information in the two or more public network service description information to the accumulated request bandwidth information.
A PC or AAC device, including:

a receiving module, configured to receive public network flow description information in two or more public network service description information provided by the AF;

The first mapping module is configured to map the public network flow description information in the two or more public network service description information into the private network flow description information;

a sending module: when the mapped private network flow description information is the same, providing the private network service description information to the PCRF, where the private network flow description information and the accumulated request bandwidth information are carried, where the accumulated request bandwidth information is The request bandwidth information in the two or more public network service description information is generated.
The apparatus according to claim 13, further comprising a first configuration module configured to configure a mapping table of a private network IP address consistent with the network address translation device NAT to the public network IP address and the public network source port number segment.
The apparatus of claim 14 wherein said apparatus further comprises:

The first mapping module determines the private network IP address according to the mapping table configured by the first configuration module and the source port number and the source IP address in the two or more public network flow description information received by the receiving module. And replacing the source IP address with the private network IP address, and the source port is replaced by the flow description information generated after the wildcard is the same.
The apparatus according to claim 13, wherein said transmitting module sets said accumulated request bandwidth information as a sum or a maximum value of requested bandwidth information in said two or more public network service description information.
A PCRF device comprising:

The second mapping module is configured to map the public network flow description information in the two or more public network service description information provided by the AF into the private network flow description information;

And formulating a module, configured to: when the mapping of the private network flow description information is the same, formulating a PCC rule according to the private network flow description information and the accumulated request bandwidth information, where the accumulated request bandwidth information is according to the two or two Request bandwidth information generation in more than one public network service description information.
The apparatus according to claim 17, further comprising a second configuration module configured to configure a mapping table of a private network IP address consistent with the network address translation device NAT to the public network IP address and the public network source port number segment.
The device according to claim 17, wherein the cumulative request bandwidth information is generated according to the requested bandwidth information in the two or more public network service description information, including:

The accumulated request bandwidth information is a sum or a maximum value of the requested bandwidth information in the two or more public network service description information.