CN112994905A - Policy and charging control method, system, electronic device and storage medium - Google Patents
Policy and charging control method, system, electronic device and storage medium Download PDFInfo
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- H04L12/1407—Policy-and-charging control [PCC] architecture
Abstract
The embodiment of the invention relates to the communication field, and discloses a control method of strategy and charging, which is applied to a PCRF (policy and charging rules function) network element and comprises the following steps: receiving a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1; generating a Policy and Charging Control (PCC) rule according to the request message, wherein the generated PCC rule comprises: and the PCC rule corresponds to the RAT currently adopted by the user terminal. The invention also provides a control system, electronic equipment and a storage medium for the strategy and the charging. The policy and charging control method, the policy and charging control system, the electronic device and the storage medium provided by the invention have the advantages that the signaling overhead of a PCC architecture is reduced, and the network resources are saved.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a method, a system, electronic equipment and a storage medium for controlling policy and charging.
Background
In a Policy and Charging Control architecture (PCC) defined by the third generation partnership project, a Policy and Charging Rules Function network element (PCRF) can generate a PCC rule according to media stream information and a requested bandwidth provided by an Application Function network element (AF), and send the PCC rule to a Policy and Charging Enforcement Function network element (PCEF) for execution, so as to trigger the PCEF to establish a dedicated bearer to a user terminal.
Because the guaranteed bandwidth that the user terminal and the Radio Access network can support under different Radio Access technologies (RAT for short) are very different, when the RAT adopted by the user terminal changes, it is necessary to determine an appropriate requested bandwidth and generate and execute a new PCC rule according to the changed RAT, thereby ensuring the service quality of AF media stream transmission.
However, the inventors found that at least the following problems exist in the prior art: when the RAT is changed, the AF and the PCRF need to perform signaling interaction for multiple times to determine the bandwidth request and generate a new PCC rule, and the signaling overhead of the PCC architecture is high, which causes waste of network resources.
Disclosure of Invention
Embodiments of the present invention provide a method, a system, an electronic device, and a storage medium for controlling policy and charging, so that signaling overhead of a PCC architecture is reduced, and network resources are saved.
In order to solve the above technical problem, an embodiment of the present invention provides a policy and charging control method, which is applied to a policy and charging rule function network element PCRF, and includes: receiving a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1; generating a Policy and Charging Control (PCC) rule according to the request message, wherein the generated PCC rule comprises: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
The embodiment of the invention also provides a policy and charging control method, which is applied to an application function network element (AF) and comprises the following steps: sending a request message to a Policy and Charging Rule Function (PCRF) network element, wherein the request message comprises media stream information and N request bandwidths; wherein the N request bandwidths correspond to different radio access technologies, RATs, and N is a natural number greater than 1, so that the PCRF generates a policy and charging control PCC rule according to the request message, where the generated PCC rule includes: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
The embodiment of the invention also provides a policy and charging control method, which is applied to a Policy and Charging Enforcement Function (PCEF) network element and comprises the following steps: receiving Policy and Charging Control (PCC) rules sent by a Policy and Charging Rules Function (PCRF) network element, wherein the PCC rules comprise: a PCC rule corresponding to the RAT currently adopted by the user terminal; the PCC rule is generated according to a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths, the N request bandwidths correspond to different Radio Access Technologies (RAT) respectively, and N is a natural number greater than 1; and executing the PCC rules corresponding to the RAT currently adopted by the user terminal.
The embodiment of the invention also provides a policy and charging control system, which comprises: an application function network element AF, a policy and charging rule function network element PCRF and a policy and charging enforcement function network element PCEF; the AF is configured to send a request message to the PCRF, where the request message includes media stream information and N request bandwidths, where the N request bandwidths correspond to different radio access technologies, RATs, respectively, and N is a natural number greater than 1; the PCRF is configured to receive a request message of the AF, and generate a policy and charging control PCC rule according to the request message, where the generated PCC rule includes: a PCC rule corresponding to the RAT currently adopted by the user terminal; and the PCEF is used for receiving the PCC rules sent by the PCRF and executing the PCC rules corresponding to the RAT currently adopted by the user terminal.
An embodiment of the present invention also provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; the storage stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the policy and charging control method.
Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, which when executed by a processor implements the policy and charging control method described above.
Compared with the prior art, the implementation mode of the invention has the advantages that the PCRF receives the request message of the AF, which comprises the media stream information and N request bandwidths, the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and then generates the policy and charging control PCC rules according to the request message. By receiving a request message carrying a plurality of bandwidth requests corresponding to different RATs, when the RAT adopted by a subsequent user terminal changes and a PCRF needs to generate a new PCC rule according to the changed RAT, the PCRF does not need to perform signaling interaction with an AF to acquire the request bandwidth corresponding to the changed RAT, and can acquire the request bandwidth corresponding to the changed RAT from the previously received request message and generate the new PCC rule, so that the number of signaling interaction between the PCRF and the AF is reduced, the signaling overhead of a PCC architecture is reduced, and network resources are saved.
In addition, after the generating a policy and charging control PCC rule according to the request message, the method further includes: and sending the generated PCC rule to a Policy and Charging Enforcement Function (PCEF) network element for enforcement.
In addition, the generating a policy and charging control, PCC, rule according to the request message includes: respectively generating N PCC rules according to N request bandwidths in the request message, wherein the N PCC rules correspond to the N request bandwidths one by one; the sending the generated PCC rule to a policy and charging enforcement function, network element, PCEF, for enforcement, including: and sending the N PCC rules to a PCEF (policy and charging enforcement function), so that the PCEF executes the PCC rules corresponding to the RAT currently adopted by the user terminal. By generating a plurality of PCC rules corresponding to different RATs and sending the PCC rules to the PCEF, when the RAT adopted by a subsequent user terminal is changed and the PCEF is required to execute a new PCC rule, the PCEF does not need to perform signaling interaction with the PCRF to acquire the new PCC rule, but can acquire and execute the PCC rule corresponding to the changed RAT from the plurality of PCC rules received before, so that the number of signaling interaction between the PCRF and the PCEF is reduced, the signaling overhead of a PCC architecture is reduced, and network resources are saved.
In addition, the generating a policy and charging control, PCC, rule according to the request message includes: acquiring the RAT currently adopted by the user terminal; determining a request bandwidth corresponding to the RAT currently adopted by the user terminal in the N request bandwidths; generating a PCC rule corresponding to the RAT currently adopted by the user terminal according to the determined request bandwidth; the sending the generated PCC rule to a policy and charging enforcement function, network element, PCEF, for enforcement, including: and sending the generated PCC rule corresponding to the RAT currently adopted by the user terminal to a PCEF for execution. By generating a plurality of PCC rules corresponding to different RATs according to the received request message and sending the PCC rules corresponding to the RAT adopted by the user terminal to the PCEF, the RAT adopted by the subsequent user terminal is changed, the PCRF needs to generate new PCC rules according to the changed RAT and send the new PCC rules to the PCEF for execution, the PCRF does not need to carry out signaling interaction with the AF to acquire the request bandwidth corresponding to the changed RAT, but can acquire the request bandwidth corresponding to the changed RAT from the received request message and generate the new PCC rules, the number of signaling interaction times between the PCRF and the AF is reduced, and therefore the signaling overhead of a PCC architecture is reduced, and network resources are saved.
In addition, the acquiring the RAT currently adopted by the ue includes: receiving the RAT currently adopted by the user terminal reported by the PCEF; or, determining the RAT currently adopted by the ue according to the RAT change event reported by the PCEF.
Drawings
One or more embodiments are illustrated by the corresponding figures in the drawings, which are not meant to be limiting.
Fig. 1 is a flowchart illustrating a policy and charging control method according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating a policy and charging control method according to a second embodiment of the present invention;
fig. 3 is an interactive flowchart of a policy and charging control method according to a second embodiment of the present invention;
fig. 4 is a flowchart illustrating a policy and charging control method according to a third embodiment of the present invention;
fig. 5 is an interactive flowchart of a policy and charging control method according to a third embodiment of the present invention;
fig. 6 is a flowchart illustrating a policy and charging control method according to a fourth embodiment of the present invention;
fig. 7 is a flowchart illustrating a policy and charging control method according to a fifth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a policy and charging control system according to a sixth embodiment of the present invention;
fig. 9 is a schematic structural diagram of an electronic device according to a seventh embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
The first embodiment of the invention relates to a control method of strategy and charging, apply to the functional network element PCRF of strategy and charging, in this embodiment, receive the solicited message of the functional network element AF of the application, the said solicited message includes media flow information and N request bandwidth; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1; generating a Policy and Charging Control (PCC) rule according to the request message, wherein the generated PCC rule comprises: and the PCC rule corresponds to the RAT currently adopted by the user terminal. The embodiment can reduce signaling overhead. The following describes implementation details of the policy and charging control method in this embodiment in detail, and the following is only provided for easy understanding and is not necessary for implementing this embodiment.
The policy and charging control method in this embodiment is shown in fig. 1:
step 101: receiving a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1.
Specifically, the PCRF receives a request message sent by the AF, where the request message is used to request the PCRF to provide network resource guarantee for AF media stream transmission, and the request message carries media stream information and N request bandwidths. Each request bandwidth includes an uplink bandwidth parameter value and a downlink bandwidth parameter value, and one request bandwidth is applicable to one RAT, for example, the uplink request bandwidth of request bandwidth 1 is 1Mbps, the downlink request bandwidth is 1Mbps, and the corresponding RAT is UTRAN (3G); the uplink request bandwidth of the request bandwidth 2 is 10Mbps, the downlink request bandwidth is 10Mbps, and the corresponding RAT is E-UTRAN (4G).
Step 102: generating a Policy and Charging Control (PCC) rule according to the request message, wherein the generated PCC rule comprises: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
Specifically, the PCRF at least generates a PCC rule corresponding to the RAT currently used by the user terminal according to the bandwidth parameter values of the requested bandwidths of the N corresponding different RATs in the request message. The generated PCC rule may be sent to the PCEF for execution, and the PCEF establishes a dedicated bearer with the user terminal according to the PCC rule, so as to transmit the AF media stream that sends the request message, thereby ensuring transmission of the AF media stream.
It is worth mentioning that the embodiment is applicable to PCC architectures of EPC (Evolved Packet Core Network) and 5GC (5G Core Network, 5 th generation mobile communication Core Network) defined by the third generation partnership project.
Compared with the prior art, in the embodiment of the invention, the PCRF receives the request message of the AF, the request message comprises the media stream information and N request bandwidths, the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and then the PCC rules of policy and charging control are generated according to the request message. By receiving a request message carrying a plurality of bandwidth requests corresponding to different RATs, when the RAT adopted by a subsequent user terminal changes and a PCRF needs to generate a new PCC rule according to the changed RAT, the PCRF does not need to perform signaling interaction with an AF to acquire the request bandwidth corresponding to the changed RAT, and can acquire the request bandwidth corresponding to the changed RAT from the previously received request message and generate the new PCC rule, so that the number of signaling interaction between the PCRF and the AF is reduced, the signaling overhead of a PCC architecture is reduced, and network resources are saved.
A second embodiment of the present invention relates to a policy and charging control method. The second embodiment is further refined on the basis of the first embodiment, in the step of generating policy and charging control PCC rules according to the request message, N PCC rules are respectively generated according to N request bandwidths in the request message, and the N PCC rules are in one-to-one correspondence with the N request bandwidths; after the step of generating the policy and charging control PCC rule according to the request message, the second embodiment further includes sending the N PCC rules to the PCEF, so that the PCEF executes the PCC rule corresponding to the RAT currently adopted by the user equipment.
As shown in fig. 2, the policy and charging control method in this embodiment specifically includes:
step 201: receiving a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1.
Step 202: respectively generating N PCC rules according to the N request bandwidths in the request message, wherein the N PCC rules correspond to the N request bandwidths one by one, and the generated PCC rules comprise: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
Specifically, the PCRF generates the PCC rules according to the bandwidth parameter value included in each request bandwidth included in the received request message. Since each requested bandwidth corresponds to one RAT, each PCC rule also corresponds to one RAT. And the generated PCC rules comprise PCC rules corresponding to the RAT currently adopted by the user terminal.
Step 203: and sending the N PCC rules to a PCEF (policy and charging enforcement function), so that the PCEF executes the PCC rules corresponding to the RAT currently adopted by the user terminal.
Specifically, the PCRF sends all the N PCC rules generated in the previous step to the PCEF, and the PCEF determines and executes a PCC rule corresponding to an adopted RAT among the N PCC rules according to the RAT currently adopted by the user terminal, and establishes a dedicated bearer between the PCEF and the user terminal for transmitting the AF media stream that sends the request message, thereby ensuring the transmission of the AF media stream.
Further, when the PCEF subsequently receives the RAT change event of the ue, the PCEF selects and executes one PCC rule corresponding to the RAT currently adopted by the ue among the N PCC rules received before, and the new PCC rule can be executed by using the changed RAT without reporting the RAT change event of the ue to the PCRF or waiting for the PCRF to issue the new PCC rule.
In an actual application scenario, an interaction flow between the PCRF, the AF, and the PCEF, which executes the control method for policy and charging in this embodiment, is shown in fig. 3, and includes:
step 1: the AF requests the PCRF to provide network resource guarantee for media stream transmission, and sends a request message to the PCRF, wherein the request message comprises media stream information and N request bandwidths corresponding to different RATs. For example, N equals 2, and the requested bandwidths are:
request bandwidth 1: the corresponding RAT is UTRAN (3G), the uplink request bandwidth is 1Mbps, and the downlink request bandwidth is 1 Mbps;
request bandwidth 2: the corresponding RAT is E-UTRAN (4G), the uplink request bandwidth is 10Mbps, and the downlink request bandwidth is 10 Mbps.
Step 2: and the PCRF receives the request message sent by the AF, and generates N PCC rules corresponding to different RATs according to the N request bandwidths corresponding to different RATs in the request message. For example, the PCRE receives a request message including 2 bandwidth requests in step 1, and in this step, two PCC rules are generated according to the request message, where the two PCC rules are:
PCC rule 1: the corresponding RAT is UTRAN (3G), the uplink request bandwidth is 1Mbps, and the downlink request bandwidth is 1 Mbps;
PCC rule 2: the corresponding RAT is E-UTRAN (4G), the uplink request bandwidth is 10Mbps, and the downlink request bandwidth is 10 Mbps.
And step 3: and the PCRF issues a plurality of PCC rules corresponding to different RATs to the PCEF. For example, in step 2, the PCRF generates 2 PCC rules, and correspondingly, in this step, the PCRF issues all the generated 2 PCC rules to the PCEF.
And 4, step 4: and the PCEF selects one PCC rule corresponding to the current RAT of the user terminal from the received N PCC rules to execute. For example, the PCEF receives the PCC rule 1 and the PCC rule 2 sent by the PCRF in step 3, in this step, it is determined that the current RAT of the user equipment is E-UTRAN (4G), the PCEF selects to execute the PCC rule 2 corresponding to the RAT, and a dedicated bearer with an uplink guaranteed bandwidth of 10Mbps and a downlink guaranteed bandwidth of 10Mbps is established between the PCEF and the user equipment, and is used for transmitting the media stream of the AF.
And 5: the user terminal movement causes a RAT change and the PCEF receives a RAT change event. For example, the ue moves, causing the RAT of the ue to change from E-UTRAN (4G) to UTRAN (3G), and the PCEF receives the information that the RAT sent the change.
Step 6: and the PCEF selects one PCC rule corresponding to the current RAT of the user terminal from the N PCC rules received before according to the latest RAT. For example, according to the foregoing steps, the RAT of the ue is changed from E-UTRAN (4G) to UTRAN (3G), the PCEF selects PCC rule 1 from the previously received 2 PCC rules to execute, and adjusts the uplink guaranteed bandwidth exclusively carried by the AF media stream to 1Mbps and the downlink guaranteed bandwidth to 1Mbps according to PCC rule 1.
Compared with the first embodiment, in the embodiment, the PCRF generates the multiple PCC rules corresponding to different RATs according to the received request message, and sends all the generated PCC rules to the PCEF, so that when the RAT adopted by the subsequent user terminal changes and the PCEF needs to execute a new PCC rule, the PCEF can acquire and execute the PCC rule corresponding to the changed RAT from the multiple PCC rules received before without performing signaling interaction with the PCRF to acquire the new PCC rule, thereby reducing the number of signaling interaction times between the PCRF and the PCEF, reducing the signaling overhead of the PCC architecture, and saving network resources.
A third embodiment of the present invention relates to a policy and charging control method. The third embodiment is substantially the same as the second embodiment, except that in the step of generating the policy and charging control PCC rule according to the request message, the RAT currently adopted by the user terminal is obtained, a request bandwidth corresponding to the RAT currently adopted by the user terminal is determined in N request bandwidths, and the PCC rule corresponding to the RAT currently adopted by the user terminal is generated according to the determined request bandwidth; after the step of generating the policy and charging control PCC rule according to the request message, the third embodiment further includes sending the generated PCC rule corresponding to the RAT currently adopted by the user equipment to the PCEF for execution.
As shown in fig. 4, the policy and charging control method in this embodiment specifically includes:
step 301: receiving a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths; wherein the N request bandwidths correspond to different Radio Access Technologies (RATs), respectively.
Step 301 is substantially the same as step 101 in the first embodiment, and is not described herein again to avoid repetition.
Step 302: acquiring the RAT currently adopted by the user terminal; and determining the request bandwidth corresponding to the RAT currently adopted by the user terminal in the N request bandwidths.
Specifically, the acquiring the RAT currently adopted by the ue includes: receiving the RAT currently adopted by the user terminal reported by the PCEF; or, determining the RAT currently adopted by the ue according to the RAT change event reported by the PCEF. After receiving the request message, the PCRF determines a request bandwidth corresponding to the RAT adopted by the user terminal from the N request bandwidths of the request message by receiving the RAT adopted by the user terminal reported by the PCEF; in addition, when the RAT adopted by the ue changes, the PCRF obtains the RAT currently adopted by the ue by receiving the RAT change event of the ue reported by the PCEF, and determines a request bandwidth corresponding to the RAT adopted by the changed ue among the N request bandwidths of the request message.
Step 303: generating a PCC rule corresponding to the RAT currently adopted by the user terminal according to the determined request bandwidth
Specifically, the PCRF uses a bandwidth parameter value in the request bandwidth corresponding to the RAT currently employed by the user terminal as a bandwidth parameter value of the PCC rule to generate the PCC rule, so that the generated PCC rule is applicable to the RAT currently employed by the user terminal.
Step 304: and sending the generated PCC rule corresponding to the RAT currently adopted by the user terminal to a PCEF for execution.
Specifically, the PCRF sends the PCC rule corresponding to the RAT currently used by the ue to the PCEF, which receives and executes the PCC rule, and establishes a dedicated bearer between the PCEF and the ue, for transmitting the AF media stream that sends the request message, thereby ensuring the transmission of the AF media stream.
In an actual application scenario, an interaction flow between the PCRF, the AF, and the PCEF, which executes the policy and charging control method in this embodiment, is shown in fig. 5, and includes:
step 1: the AF requests the PCRF to provide network resource guarantee for media stream transmission, and sends a request message to the PCRF, wherein the request message comprises media stream information and N request bandwidths corresponding to different RATs. For example, N equals 2, and the requested bandwidths are:
request bandwidth 1: the corresponding RAT is UTRAN (3G), the uplink request bandwidth is 1Mbps, and the downlink request bandwidth is 1 Mbps;
request bandwidth 2: the corresponding RAT is E-UTRAN (4G), the uplink request bandwidth is 10Mbps, and the downlink request bandwidth is 10 Mbps.
Step 2: and the PCRF acquires the current RAT of the user terminal according to the access information of the user terminal reported by the PCEF, and after receiving the request message of the AF, the PCRF determines the bandwidth parameter value of the PCC rule according to the current RAT of the user terminal and generates the PCC rule for the AF media stream. For example, the PCRF learns that the current RAT of the user terminal is E-UTRAN (4G), uses the broadband parameter value in the request broadband 2 as the bandwidth parameter value of the PCC rule, and determines that the uplink guaranteed bandwidth of the PCC rule is 10Mbps and the downlink guaranteed bandwidth is 10 Mbps.
And step 3: and the PCRF issues the generated PCC rules to the PCEF, and the PCEF installs and executes the PCC rules. For example, the PCEF receives the PCC rule generated in step 2, and establishes a dedicated bearer with an uplink guaranteed bandwidth of 10Mbps and a downlink guaranteed bandwidth of 10Mbps with the user terminal, for transmitting the AF media stream.
And 4, step 4: the UE moves to cause the RAT to change, and the PCEF receives the RAT changing event and reports the RAT changing event to the PCRF. For example, the ue moves, which causes the RAT of the ue to change from E-UTRAN (4G) to UTRAN (3G), and the PCEF receives the information about the RAT change and reports the information about the RAT change to the PCRF.
And 5: and the PCRF determines the bandwidth parameter value of the PCC rule according to the RAT adopted by the current user terminal and generates a new PCC rule. For example, when the RAT of the user terminal is switched to UTRAN (3G), PCRF uses the broadband parameter value in the request broadband 1 as the bandwidth parameter value of the PCC rule, and determines that the uplink guaranteed bandwidth of the PCC rule is 1Mbps and the downlink guaranteed bandwidth is 1 Mbps.
Step 6: and the PCRF issues the regenerated PCC rules to the PCEF, and the PCEF installs and executes the PCC rules. For example, the PCEF issues the PCC rule generated in step 5 to the PCEF, and according to the PCC rule, the PCEF adjusts the uplink guaranteed bandwidth of the dedicated bearer for the AF media stream to 1Mbps, and adjusts the downlink guaranteed bandwidth to 1 Mbps.
Compared with the prior art, in the embodiment, the PCRF generates a plurality of PCC rules corresponding to different RATs according to the received request message, and sends the PCC rules corresponding to the RATs adopted by the user terminal to the PCEF, so that when the RATs adopted by the subsequent user terminal change and the PCRF needs to generate new PCC rules according to the changed RATs and send the new PCC rules to the PCEF for execution, the PCRF can acquire the request bandwidth corresponding to the changed RATs from the previously received request message without signaling interaction with the AF to acquire the request bandwidth corresponding to the changed RATs and generate the new PCC rules, thereby reducing the number of signaling interaction between the PCRF and the AF, reducing the signaling overhead of the PCC architecture, and saving network resources.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
The fourth embodiment of the present invention relates to a policy and charging control method, which is applied to an application function network element AF, and includes: sending a request message to a Policy and Charging Rule Function (PCRF) network element, wherein the request message comprises media stream information and N request bandwidths; wherein the N request bandwidths correspond to different radio access technologies, RATs, and N is a natural number greater than 1, so that the PCRF generates a policy and charging control PCC rule according to the request message, where the generated PCC rule includes: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
The policy and charging control method in this embodiment is shown in fig. 6:
step 401: constructing a request message, wherein the request message comprises media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1.
Specifically, the AF constructs a request message, where the request message is used to request the PCRF to provide network resource guarantee for AF media stream transmission, and the request message carries media stream information and N request bandwidths. Each request bandwidth includes an uplink bandwidth parameter value and a downlink bandwidth parameter value, and one request bandwidth is applicable to one RAT, for example, the uplink request bandwidth of request bandwidth 1 is 1Mbps, the downlink request bandwidth is 1Mbps, and the corresponding RAT is UTRAN (3G); the uplink request bandwidth of the request bandwidth 2 is 10Mbps, the downlink request bandwidth is 10Mbps, and the corresponding RAT is E-UTRAN (4G).
Step 402: sending a request message to the PCRF, so that the PCRF generates a PCC rule according to the request message, wherein the generated PCC rule comprises: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
Compared with the prior art, in the embodiment, the application function network element AF sends a request message, where the request message includes media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1. By sending a request message carrying a plurality of bandwidth requests corresponding to different RATs, when the RAT adopted by a subsequent user terminal changes and a PCRF needs to generate a new PCC rule according to the changed RAT, the PCRF does not need to perform signaling interaction with an AF to acquire the request bandwidth corresponding to the changed RAT, but can acquire the request bandwidth corresponding to the changed RAT from the previously received request message and generate the new PCC rule, so that the number of signaling interaction between the PCRF and the AF is reduced, the signaling overhead of a PCC architecture is reduced, and network resources are saved.
A fifth embodiment of the present invention relates to a policy and charging control method, which is applied to a policy and charging enforcement function network element PCEF, and includes: receiving Policy and Charging Control (PCC) rules sent by a Policy and Charging Rules Function (PCRF) network element, wherein the PCC rules comprise: a PCC rule corresponding to the RAT currently adopted by the user terminal; the PCC rule is generated according to a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths, the N request bandwidths correspond to different Radio Access Technologies (RAT) respectively, and N is a natural number greater than 1; and executing the PCC rules corresponding to the RAT currently adopted by the user terminal.
The policy and charging control method in this embodiment is shown in fig. 7:
step 501: receiving a PCC rule sent by the PCRF, wherein the PCC rule is generated according to a request message of the AF, the request message comprises media flow information and N request bandwidths, the N request bandwidths correspond to different Radio Access Technologies (RAT) respectively, and N is a natural number larger than 1.
Specifically, the PCEF receives the PCC rules generated by the PCRF, where the PCC rules include at least one PCC rule corresponding to the RAT adopted by the current user. The PCC rule is that the PCEF generates according to a request message of the AF, where the request message includes media stream information and N request bandwidths, each request bandwidth includes an uplink bandwidth parameter value and a downlink bandwidth parameter value, and one request bandwidth is applicable to one RAT, for example, an uplink request bandwidth of a request bandwidth 1 is 1Mbps, a downlink request bandwidth is 1Mbps, and a corresponding RAT is UTRAN (3G); the uplink request bandwidth of the request bandwidth 2 is 10Mbps, the downlink request bandwidth is 10Mbps, and the corresponding RAT is E-UTRAN (4G).
Step 502: and executing the PCC rules corresponding to the RAT currently adopted by the user terminal.
In a specific example, in step 501, the PCC rule received by the PCEF specifically includes: and respectively generating N PCC rules according to the N request bandwidths in the request message, wherein the N PCC rules are in one-to-one correspondence with the N request bandwidths. In step 502, executing a PCC rule corresponding to the RAT currently used by the user terminal, specifically including: selecting a PCC rule corresponding to the RAT currently adopted by the user terminal from the N PCC rules; executing the selected PCC rule. By receiving a plurality of PCC rules corresponding to different RATs and selecting the PCC rule corresponding to the RAT adopted by the user terminal from the PCC rules to execute, when the RAT adopted by the subsequent user terminal is changed and the PCEF is required to execute the new PCC rule, the PCEF does not need to perform signaling interaction with the PCRF to acquire the new PCC rule, but can acquire and execute the PCC rule corresponding to the changed RAT from the PCC rules received before, so that the signaling interaction times between the PCRF and the PCEF are reduced, the signaling overhead of a PCC architecture is reduced, and the network resources are saved.
Compared with the prior art, in this embodiment, the policy and charging enforcement function network element PCEF receives the PCC rule generated by the PCRF according to the request message sent by the AF, where the request message includes media flow information and N request bandwidths, and the N request bandwidths correspond to different radio access technologies RATs, respectively. By receiving the PCC rule generated according to the request message carrying the plurality of request bandwidths corresponding to different RATs, when the RAT adopted by the subsequent user terminal is changed and the PCRF is required to generate a new PCC rule according to the changed RAT, the PCRF does not need to perform signaling interaction with the AF to acquire the request bandwidth corresponding to the changed RAT, can acquire the request bandwidth corresponding to the changed RAT from the received request message and generate the new PCC rule, reduces the number of signaling interaction between the PCRF and the AF, thereby reducing the signaling overhead of a PCC architecture and saving network resources.
A sixth embodiment of the present invention relates to a policy and charging control system, including: an application function network element AF, a policy and charging rules function network element PCRF and a policy and charging enforcement function network element PCEF. The policy and charging control system in this embodiment is specifically shown in fig. 8:
601 an application function network element AF, configured to send a request message to the PCRF, where the request message includes media stream information and N request bandwidths, where the N request bandwidths correspond to different radio access technologies RATs, respectively, and N is a natural number greater than 1.
602 a policy and charging rules function, PCRF, configured to receive the request message of the AF, and generate a policy and charging control, PCC, rule according to the request message, where the generated PCC rule includes: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
603 policy and charging enforcement function, PCEF, of the network element, configured to receive the PCC rule sent by the PCRF, and enforce the PCC rule corresponding to the RAT currently employed by the user terminal.
In an example, the PCRF is specifically configured to receive a request message of an application function network element AF, where the request message includes media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1; respectively generating N PCC rules according to N request bandwidths in the request message, wherein the N PCC rules correspond to the N request bandwidths one by one; and sending the N PCC rules to a PCEF (policy and charging enforcement function), so that the PCEF executes the PCC rules corresponding to the RAT currently adopted by the user terminal.
In an example, the PCRF is specifically configured to receive a request message of an application function network element AF, where the request message includes media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1; acquiring the RAT currently adopted by the user terminal; determining a request bandwidth corresponding to the RAT currently adopted by the user terminal in the N request bandwidths; generating a PCC rule corresponding to the RAT currently adopted by the user terminal according to the determined request bandwidth; and sending the generated PCC rule corresponding to the RAT currently adopted by the user terminal to a PCEF for execution.
In an example, the PCEF is specifically configured to receive a policy and charging control PCC rule sent by a policy and charging rules function network element PCRF, where the PCC rule includes: respectively generating N PCC rules according to N request bandwidths in the request message, wherein the N PCC rules are in one-to-one correspondence with the N request bandwidths; the PCC rule is generated according to a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths, the N request bandwidths correspond to different Radio Access Technologies (RAT) respectively, and N is a natural number greater than 1; selecting a PCC rule corresponding to the RAT currently adopted by the user terminal from the N PCC rules; executing the selected PCC rule.
It should be understood that this embodiment is a system example corresponding to the first embodiment, and may be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
A seventh embodiment of the present invention relates to an electronic device, as shown in fig. 9, including at least one processor 701; and, a memory 702 communicatively coupled to the at least one processor 701; the memory 702 stores instructions executable by the at least one processor 701, and the instructions are executed by the at least one processor 701 to enable the at least one processor 701 to execute the policy and charging control method in any one of the above method embodiments.
The memory 702 and the processor 701 are coupled by a bus, which may comprise any number of interconnecting buses and bridges that couple one or more of the various circuits of the processor 701 and the memory 702. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 701 is transmitted over a wireless medium through an antenna, which receives the data and transmits the data to the processor 701.
The processor 701 is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 702 may be used for storing data used by the processor 701 in performing operations.
The embodiment of the invention also provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the policy and charging control method in any method embodiment.
That is, as can be understood by those skilled in the art, all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (11)
1. A control method for policy and charging is applied to a Policy and Charging Rules Function (PCRF) network element, and comprises the following steps:
receiving a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths; the N request bandwidths respectively correspond to different Radio Access Technologies (RAT), and N is a natural number greater than 1;
generating a Policy and Charging Control (PCC) rule according to the request message, wherein the generated PCC rule comprises: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
2. The method of claim 1, wherein after the generating the PCC rule according to the request message, the method further comprises:
and sending the generated PCC rule to a Policy and Charging Enforcement Function (PCEF) network element for enforcement.
3. The method of claim 2, wherein the generating the PCC rule according to the request message comprises:
respectively generating N PCC rules according to N request bandwidths in the request message, wherein the N PCC rules correspond to the N request bandwidths one by one;
the sending the generated PCC rule to a policy and charging enforcement function, network element, PCEF, for enforcement, including:
and sending the N PCC rules to a PCEF (policy and charging enforcement function), so that the PCEF executes the PCC rules corresponding to the RAT currently adopted by the user terminal.
4. The method of claim 2, wherein the generating the PCC rule according to the request message comprises:
acquiring the RAT currently adopted by the user terminal;
determining a request bandwidth corresponding to the RAT currently adopted by the user terminal in the N request bandwidths;
generating a PCC rule corresponding to the RAT currently adopted by the user terminal according to the determined request bandwidth;
the sending the generated PCC rule to a policy and charging enforcement function, network element, PCEF, for enforcement, including:
and sending the generated PCC rule corresponding to the RAT currently adopted by the user terminal to a PCEF for execution.
5. The method of claim 4, wherein the obtaining the RAT currently adopted by the UE comprises:
receiving the RAT currently adopted by the user terminal reported by the PCEF;
or, determining the RAT currently adopted by the ue according to the RAT change event reported by the PCEF.
6. A control method for policy and charging is applied to an application function network element (AF), and comprises the following steps:
sending a request message to a Policy and Charging Rule Function (PCRF) network element, wherein the request message comprises media stream information and N request bandwidths; wherein the N request bandwidths correspond to different radio access technologies, RATs, and N is a natural number greater than 1, so that the PCRF generates a policy and charging control PCC rule according to the request message, where the generated PCC rule includes: and the PCC rule corresponds to the RAT currently adopted by the user terminal.
7. A control method for policy and charging is applied to a Policy and Charging Enforcement Function (PCEF) network element, and comprises the following steps:
receiving Policy and Charging Control (PCC) rules sent by a Policy and Charging Rules Function (PCRF) network element, wherein the PCC rules comprise: a PCC rule corresponding to the RAT currently adopted by the user terminal; the PCC rule is generated according to a request message of an application function network element (AF), wherein the request message comprises media stream information and N request bandwidths, the N request bandwidths correspond to different Radio Access Technologies (RAT) respectively, and N is a natural number greater than 1;
and executing the PCC rules corresponding to the RAT currently adopted by the user terminal.
8. The method of claim 7, wherein the PCC rule comprises:
respectively generating N PCC rules according to N request bandwidths in the request message, wherein the N PCC rules are in one-to-one correspondence with the N request bandwidths;
the executing the PCC rule corresponding to the RAT currently adopted by the user terminal includes:
selecting a PCC rule corresponding to the RAT currently adopted by the user terminal from the N PCC rules;
executing the selected PCC rule.
9. A policy and charging control system, comprising: an application function network element AF, a policy and charging rule function network element PCRF and a policy and charging enforcement function network element PCEF;
the AF is configured to send a request message to the PCRF, where the request message includes media stream information and N request bandwidths, where the N request bandwidths correspond to different radio access technologies, RATs, respectively, and N is a natural number greater than 1;
the PCRF is configured to receive a request message of the AF, and generate a policy and charging control PCC rule according to the request message, where the generated PCC rule includes: a PCC rule corresponding to the RAT currently adopted by the user terminal;
and the PCEF is used for receiving the PCC rules sent by the PCRF and executing the PCC rules corresponding to the RAT currently adopted by the user terminal.
10. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of controlling policy and charging according to any one of claims 1 to 5; or performing the policy and charging control method according to claim 6; or to perform the policy and charging control method according to claim 7 or 8.
11. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the policy and charging control method according to any one of claims 1 to 5; or performing the policy and charging control method according to claim 6; or to perform the policy and charging control method according to claim 7 or 8.
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