CN108632882B - Code rate control method, PCF entity, AMF entity and SMF entity - Google Patents

Code rate control method, PCF entity, AMF entity and SMF entity Download PDF

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CN108632882B
CN108632882B CN201710160174.8A CN201710160174A CN108632882B CN 108632882 B CN108632882 B CN 108632882B CN 201710160174 A CN201710160174 A CN 201710160174A CN 108632882 B CN108632882 B CN 108632882B
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terminal
maximum bit
bit rate
entity
session
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CN108632882A (en
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郭雅莉
艾明
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H04W28/0257—Traffic management, e.g. flow control or congestion control per individual bearer or channel the individual bearer or channel having a maximum bit rate or a bit rate guarantee
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data

Abstract

The invention provides a code rate control method, a PCF entity, an AMF entity and an SMF entity, and relates to the technical field of communication. The code rate control method comprises the following steps: when request information for establishing a terminal context of an access and mobility management function (AMF) entity is received, acquiring signing data of the terminal, wherein the signing data comprises a terminal aggregation maximum bit rate signed by the terminal; acquiring a session aggregation maximum bit rate of a session of the terminal in an activated state; determining the maximum bit rate used by the terminal according to the maximum bit rate aggregated by the terminal and the maximum bit rate aggregated by the session; and feeding back the aggregated maximum bit rate to the AMF entity, so that the AMF entity sends the aggregated maximum bit rate to the access network, and the access network controls the data code rate of the terminal according to the aggregated maximum bit rate. The scheme realizes the control of the access network on the data code rate of the terminal and ensures the reliability of network communication.

Description

Code rate control method, PCF entity, AMF entity and SMF entity
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a code rate control method, a PCF entity, an AMF entity, and an SMF entity.
Background
The architecture diagram of the next generation (NextGen) network is shown in fig. 1, which mainly includes: a User Plane Function (UPF), an Access and Mobility Management Function (AMF), a Session Management Function (SMF), a Policy Control Function (PCF), and a Unified Data Management (UDM), wherein UPF is a User Plane anchor point; the AMF is responsible for mobility management and is connected to User Equipment (UE, also called a terminal) and AN Access Network (AN); the SMF is a control plane network node, is responsible for session management and is connected with the UPF; PCF is responsible for policy control, and UDM is responsible for user subscription data management.
It should be noted that, in the NextGen network, one UE may establish multiple sessions (sessions) in the core network, and establish a session tunnel (session tunnel) in the core network for each session, and data belonging to the session is transmitted between the AN and the UPF through the session tunnel. And transmitting the data of the session through one or more air interface bearers (RBs) at the air interface sides of the AN and the UE. In each session, data with different Quality of Service (QoS) requirements can be transmitted, which is called a QoS data stream, where the QoS data stream is divided into two types, namely, Guaranteed Bit Rate (GBR) and non-Guaranteed Bit Rate (non-GBR), for a GBR type QoS data stream, the network may allocate sufficient resources to guarantee data transmission with the minimum Guaranteed Bit Rate set for one QoS data stream, for a non-GBR type QoS data stream, the network does not set the minimum Guaranteed Bit Rate, and for one session established by one UE, the sum of the Bit rates of all non-GBR type QoS data streams therein may be subjected to Rate control, and the sum of the Bit rates of all non-GBR type QoS data streams of the UE may also be subjected to Rate control, and the excess part may be discarded, so as to ensure that network resources may be used more effectively.
For each session established by one UE, performing aggregated Maximum rate control on the sum of all non-GBR type QoS data streams in one session, where the value of the aggregated Maximum rate control is referred to as session Aggregated Maximum Bit Rate (AMBR), and a part of one session established by one UE, where the sum of the code rates of all non-GBR type QoS data streams exceeds the session-AMBR, is discarded, so as to ensure that network resources can be used more effectively.
In the prior art, the sum of the code rates of QoS flows of non-GBR types in a session is controlled, a packet exceeding the session-AMBR in a session is discarded, and effective utilization of network resources is guaranteed, but because one UE can establish multiple sessions, each session independently controls the session-AMBR, and cannot control the total data flow of the UE, and network resources may still be wasted, therefore, for one UE, the network also performs maximum code rate control on the sum of the code rates of QoS data flows of all non-GBR types of the UE, the value of the maximum code rate control is called UE-AMBR (i.e., AMBR that can be actually used by the UE), and the part of the sum of the code rates of QoS data flows of all non-GBR types of the UE exceeding the UE-AMBR is discarded, so as to guarantee that network resources can be more effectively used.
However, how to determine the AMBR used by the UE is not defined in the prior art, which causes a problem that an access network side cannot effectively control a terminal data code rate, thereby affecting communication reliability.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a code rate control method, a PCF entity, an AMF entity and an SMF entity, so as to solve the problem that the reliability of network communication cannot be guaranteed because an access network cannot effectively control a terminal data code rate because no scheme for determining an AMBR used by a UE exists in the prior art.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a code rate control method, including:
when request information for establishing a terminal context of an access and mobility management function (AMF) entity is received, acquiring signing data of the terminal, wherein the signing data comprises a terminal aggregation maximum bit rate signed by the terminal;
acquiring a session aggregation maximum bit rate of a session of the terminal in an activated state;
determining the maximum bit rate used by the terminal according to the maximum bit rate aggregated by the terminal and the maximum bit rate aggregated by the session;
and feeding back the aggregated maximum bit rate to the AMF entity, so that the AMF entity sends the aggregated maximum bit rate to the access network, and the access network controls the data code rate of the terminal according to the aggregated maximum bit rate.
Further, the step of acquiring the subscription data of the terminal includes:
sending a signing data acquisition request to a unified data storage (UDR) entity;
and receiving subscription data which are fed back by the UDR entity and contain the maximum bit rate of terminal aggregation signed by the terminal.
Further, the step of acquiring the subscription data of the terminal includes:
and acquiring subscription data containing the maximum bit rate of the terminal aggregation signed by the terminal from the request information for establishing the terminal context.
Further, the step of obtaining the session aggregation maximum bit rate of the session in which the terminal is in the active state includes:
acquiring an aggregation maximum bit rate of a subscription of a session established by a terminal;
acquiring a user plane state of a session established by the terminal from a Session Management Function (SMF) entity;
and determining the session aggregation maximum bit rate of the session with the user plane state being the activated state according to the user plane state and the signed aggregation maximum bit rate of the session established by the terminal.
Further, the step of obtaining the maximum bit rate aggregated under the subscription of the session established by the terminal includes:
acquiring an aggregated maximum bit rate of a subscription of a session established by a terminal from an SMF entity; or
Obtaining an aggregated maximum bit rate for a subscription of a session established by a terminal from a UDR entity.
Further, the code rate control method further includes:
and when the user plane state of the session established by the terminal is updated, acquiring the updated user plane state of the session from the SMF entity.
Further, the step of determining the aggregated maximum bit rate used by the terminal according to the terminal aggregated maximum bit rate and the session aggregated maximum bit rate includes:
if the sum of the session aggregated maximum bit rates of all the sessions in the active state is greater than or equal to the terminal aggregated maximum bit rate, determining that the terminal aggregated maximum bit rate is the aggregated maximum bit rate used by the terminal, otherwise, determining that the sum of the session aggregated maximum bit rates of all the sessions in the active state is the aggregated maximum bit rate used by the terminal.
Further, the step of feeding back the aggregated maximum bit rate to the AMF entity comprises:
sending the aggregated maximum bit rate directly to the AMF entity; or
Feeding back the aggregated maximum bit rate to the AMF entity through the SMF entity.
The embodiment of the invention provides a policy control functional entity, which comprises:
the system comprises a first acquisition module, a first mapping module and a second acquisition module, wherein the first acquisition module is used for acquiring the signing data of the terminal when receiving request information for establishing a terminal context of an access and mobility management function (AMF) entity, and the signing data comprises the terminal aggregation maximum bit rate signed by the terminal;
a second obtaining module, configured to obtain a session aggregation maximum bit rate of a session in an active state of the terminal;
a determining module, configured to determine an aggregated maximum bit rate used by the terminal according to the terminal aggregated maximum bit rate and the session aggregated maximum bit rate;
and the first feedback module is used for feeding back the aggregated maximum bit rate to the AMF entity, so that the AMF entity sends the aggregated maximum bit rate to the access network, and the access network controls the data code rate of the terminal according to the aggregated maximum bit rate.
Further, the first obtaining module comprises:
the first sending unit is used for sending a signing data acquisition request to the unified data storage UDR entity;
a first receiving unit, configured to receive subscription data including a terminal aggregated maximum bit rate subscribed by the terminal and fed back by the UDR entity.
Further, the first obtaining module comprises:
a first obtaining unit, configured to obtain, in the request information for establishing a context of the terminal, subscription data including a maximum bit rate aggregated by the terminal subscribed to the terminal.
Further, the second obtaining module includes:
a second obtaining unit, configured to obtain an aggregated maximum bit rate of a subscription of a session established by a terminal;
a third obtaining unit, configured to obtain a user plane state of a session established by the terminal from a session management function SMF entity;
and the fourth obtaining unit is used for determining the session aggregation maximum bit rate of the session with the user plane state being the activated state according to the user plane state and the session subscription aggregation maximum bit rate established by the terminal.
Further, the second obtaining unit is configured to:
acquiring an aggregated maximum bit rate of a subscription of a session established by a terminal from an SMF entity; or
Obtaining an aggregated maximum bit rate for a subscription of a session established by a terminal from a UDR entity.
Further, the policy control function entity further includes:
and the third obtaining module is used for obtaining the user plane state of the session after updating from the SMF entity when the user plane state of the session established by the terminal is updated.
Further, the determination module is to:
if the sum of the session aggregated maximum bit rates of all the sessions in the active state is greater than or equal to the terminal aggregated maximum bit rate, determining that the terminal aggregated maximum bit rate is the aggregated maximum bit rate used by the terminal, otherwise, determining that the sum of the session aggregated maximum bit rates of all the sessions in the active state is the aggregated maximum bit rate used by the terminal.
Further, the first feedback module is configured to:
sending the aggregated maximum bit rate directly to the AMF entity; or
Feeding back the aggregated maximum bit rate to the AMF entity through the SMF entity.
The embodiment of the invention provides a policy control functional entity, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the processor implements the steps in the code rate control method when executing the computer program.
The embodiment of the invention provides a code rate control method, which comprises the following steps:
when a terminal registers to a network, sending request information for establishing a terminal context to a Policy Control Function (PCF) entity;
receiving the aggregation maximum bit rate used by the terminal fed back by the PCF entity according to the aggregation maximum bit rate of the terminal;
and sending the aggregated maximum bit rate to an access network, so that the access network controls the data code rate of the terminal according to the aggregated maximum bit rate.
Further, when the request information contains subscription data including a maximum bit rate aggregated by the terminal subscribed by the terminal, the step of sending the request information for establishing the context of the terminal to the policy control function PCF entity when the terminal registers in the network includes:
when the terminal registers to the network, a signing data acquisition request is sent to a Unified Data Management (UDM) entity;
receiving subscription data which are fed back by the UDM entity and contain the maximum bit rate of terminal aggregation signed by the terminal;
and sending request information containing the subscription data for establishing the terminal context to the PCF entity.
The embodiment of the invention provides an access and mobility management functional entity, which comprises the following components:
the first sending module is used for sending request information for establishing the context of the terminal to a Policy Control Function (PCF) entity when the terminal is registered to a network;
a receiving module, configured to receive an aggregated maximum bit rate used by the terminal, where the aggregated maximum bit rate is fed back by the PCF entity according to the terminal aggregated maximum bit rate;
and a second sending module, configured to send the aggregated maximum bit rate to an access network, so that the access network controls a data code rate of the terminal according to the aggregated maximum bit rate.
Further, when the request information includes subscription data including a terminal aggregated maximum bit rate for the terminal subscription, the first sending module includes:
the second sending unit is used for sending a signing data acquisition request to the Unified Data Management (UDM) entity when the terminal is registered to the network;
a second receiving unit, configured to receive subscription data including a terminal aggregated maximum bit rate for terminal subscription, fed back by the UDM entity;
a third sending unit, configured to send request information for establishing a terminal context, which includes the subscription data, to the PCF entity.
The embodiment of the present invention provides an access and mobility management functional entity, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor implements the steps in the above code rate control method when executing the computer program.
The embodiment of the invention provides a code rate control method, which comprises the following steps:
when a terminal establishes a Protocol Data Unit (PDU) session, a request is made to a Policy Control Function (PCF) entity for establishing a Policy and Charging Control (PCC) session;
and feeding back the user plane state of the PDU conversation to the PCF entity.
Further, the code rate control method further includes:
sending the acquired maximum bit rate of the PDU session subscription aggregation to the PCF entity; wherein the content of the first and second substances,
the signed maximum aggregated bit rate is obtained by a Session Management Function (SMF) entity directly from a Unified Data Management (UDM) entity, or the signed maximum aggregated bit rate is sent to the SMF entity by a receiving access and mobility management function (AMF) entity.
Further, the code rate control method further includes:
and receiving the aggregated maximum bit rate sent by the PCF entity, and feeding back the aggregated maximum bit rate to an access and mobility management function (AMF) entity.
Further, the code rate control method further includes:
and when the user plane state of the session established by the terminal is updated, sending the updated user plane state of the session to the PCF entity.
The embodiment of the invention provides a session management functional entity, which comprises:
the request module is used for requesting a Policy Control Function (PCF) entity to establish a Policy and Charging Control (PCC) session when a Protocol Data Unit (PDU) session is established by a terminal;
and the second feedback module is used for feeding back the user plane state of the PDU conversation to the PCF entity.
Further, the session management function entity further includes:
a third sending module, configured to send the obtained maximum bit rate of the PDU session subscription aggregation to the PCF entity; wherein the content of the first and second substances,
the signed maximum aggregated bit rate is obtained by a Session Management Function (SMF) entity directly from a Unified Data Management (UDM) entity, or the signed maximum aggregated bit rate is sent to the SMF entity by a receiving access and mobility management function (AMF) entity.
Further, the session management function entity further includes:
and the third feedback module is used for receiving the aggregated maximum bit rate sent by the PCF entity and feeding back the aggregated maximum bit rate to the access and mobility management function AMF entity.
Further, the session management function entity further includes:
and the fourth sending module is used for sending the updated user plane state of the session to the PCF entity when the user plane state of the session established by the terminal is updated.
The embodiment of the invention provides a session management functional entity, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the processor realizes the steps in the code rate control method when executing the computer program.
The invention has the beneficial effects that:
according to the scheme, the maximum bit rate of the aggregation of the terminal signed by the terminal and the maximum bit rate of the aggregation of the session in the activated state are determined to obtain the maximum bit rate of the aggregation which can be actually used by the terminal, and the data code rate of the terminal is controlled by the access network according to the maximum bit rate of the aggregation.
Drawings
FIG. 1 shows an architecture diagram of a NextGen network;
fig. 2 is a flowchart illustrating a code rate control method according to a first embodiment of the invention;
fig. 3 is a diagram illustrating a specific implementation process of a code rate control method in a first implementation manner;
fig. 4 is a diagram illustrating a specific implementation process of a code rate control method in a second implementation manner;
fig. 5 is a block diagram of a policy control function entity according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a policy control function entity according to a third embodiment of the present invention;
fig. 7 is a flowchart illustrating a code rate control method according to a fourth embodiment of the present invention;
fig. 8 is a schematic block diagram of an access and mobility management functional entity according to a fifth embodiment of the present invention;
fig. 9 is a schematic structural diagram of an access and mobility management functional entity according to a sixth embodiment of the present invention;
fig. 10 is a flowchart illustrating a code rate control method according to a seventh embodiment of the present invention;
fig. 11 is a schematic block diagram of a session management function entity according to an eighth embodiment of the present invention;
fig. 12 is a schematic structural diagram of a session management functional entity according to a ninth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a code rate control method, a PCF entity, an AMF entity and an SMF entity, aiming at the problems that an access network cannot effectively control a terminal data code rate and cannot ensure the reliability of network communication because an AMBR used by UE is not determined in the prior art.
Example one
As shown in fig. 2, an embodiment of the present invention provides a method for controlling a code rate, including:
step 21, when receiving request information for establishing a terminal context of an access and mobility management function (AMF) entity, acquiring subscription data of the terminal, wherein the subscription data comprises a terminal aggregation maximum bit rate signed by the terminal;
it should be noted that, the code rate control method of this embodiment is applied to a Policy Control Function (PCF) entity, when a terminal registers in a network, an AMF entity needs to initiate a request for establishing a context of the terminal to the PCF entity, and when receiving request information of the AMF entity, the PCF entity starts a determination process of an Aggregate Maximum Bit Rate (AMBR) used by the terminal.
Step 22, obtaining a session aggregation maximum bit rate of the session of the terminal in the activated state;
it should be noted that, when the terminal accesses the network, multiple sessions may be established with the network, the network may stipulate an available AMBR for each session, the available AMBR for each session may affect a UE-AMBR used by the terminal, and only the active session may affect the determination of the UE-AMBR, so that a session-aggregated maximum bit rate (session-AMBR) of the active session needs to be obtained in this step.
Step 23, determining the aggregated maximum bit rate used by the terminal according to the terminal aggregated maximum bit rate and the session aggregated maximum bit rate;
in this step, the actually used AMBR of the terminal can be determined and obtained directly according to the UE-AMBR and the session-AMBR obtained in the previous two steps, and the specific determination method is as follows: if the sum of the session-AMBRs of all the sessions in the activated state is greater than or equal to the UE-AMBR, determining the UE-AMBR to be the AMBR used by the terminal, otherwise, determining the sum of the session-AMBRs of all the sessions in the activated state to be the AMBR used by the terminal; the AMBR used by the terminal determined by the method does not exceed the AMBR actually distributed by the network, and the stability of network communication is ensured while the network resources are fully utilized.
And 24, feeding back the aggregated maximum bit rate to the AMF entity, so that the AMF entity sends the aggregated maximum bit rate to the access network, and the access network controls the data code rate of the terminal according to the aggregated maximum bit rate.
According to the embodiment of the invention, the PCF entity determines to obtain the AMBR which can be actually used by the terminal according to the UE-AMBR signed by the terminal and the session-AMBR of the active session, and the access network controls the data code rate of the terminal according to the AMBR.
Optionally, one implementation manner of step 21 in the embodiment of the present invention includes:
sending a signing data acquisition request to a unified data storage (UDR) entity;
it should be noted that, because the UDR entity is responsible for storing the subscription data, and the PCF entity can directly communicate with the UDR entity, the PCF entity can directly send a subscription data acquisition request to the UDR entity, and acquire the relevant subscription data from the UDR entity.
And receiving subscription data which are fed back by the UDR entity and contain the maximum bit rate of terminal aggregation signed by the terminal.
In this embodiment, after receiving the request information of the AMF entity, the PCF entity mainly determines the AMBRs that can be actually used by the terminal, so the subscription data acquired by the PCF entity must include the UE-AMBRs subscribed by the terminal, and it should be noted that the subscription data may also include the AMBRs of the session subscribed by the terminal, and specifically, whether to send the AMBRs of the subscribed session in the communication at this time may be configured according to the actual usage of the network, so that excessive limitation is not performed.
In order to reduce the information interaction flow of the PCF entity, the AMF entity may directly send the UE-AMBR signed by the terminal to the PCF entity when sending the request information for establishing the context of the terminal, so that another implementation manner of step 21 in the embodiment of the present invention is as follows:
and acquiring subscription data containing the maximum bit rate of the terminal aggregation signed by the terminal from the request information for establishing the terminal context.
In the implementation mode, when receiving the request information of the AMF entity, the PCF entity directly acquires the subscription data containing the UE-AMBR signed by the terminal from the request information, and in this way, the PCF entity does not need to perform information interaction with the UDR entity, thereby reducing the information interaction flow in the PCF entity and simultaneously shortening the time for determining the AMBR actually used by the terminal by the PCF entity.
It should be noted here that, because the AMF entity does not store the subscription data related to the terminal, the AMF entity also needs to acquire the subscription data of the terminal from an external network element, it should be noted that the UDR entity is responsible for storing the subscription data, but the AMF entity cannot directly communicate with the UDR entity, and a network element including the UDR entity is usually provided with a Unified Data Management (UDM) entity, and the UDM entity may directly communicate with the AMF entity or acquire the subscription data from the UDR entity, and therefore, a specific implementation manner of acquiring the subscription data of the UE-AMBR including the terminal subscription by the AMF entity is as follows: when the terminal registers in the network, a signing data acquisition request is sent to the UDM entity, the UDM entity interacts with the UDR entity to acquire related signing data, then the signing data is sent to the AMF entity, and the AMF entity directly receives the signing data which are fed back by the UDM entity and contain the UE-AMBR signed by the terminal.
It should be noted that the PCF entity may store session states of multiple sessions of the terminal, but the session state of the terminal is monitored by a Session Management Function (SMF) entity, so that the PCF entity needs to acquire which sessions are active and needs to acquire a user plane state of the session of the terminal from the SMF entity, and therefore, in the embodiment of the present invention, the step 22 includes:
acquiring an aggregation maximum bit rate of a subscription of a session established by a terminal;
it should be noted that the PCF entity obtains the maximum bit rate of the subscription aggregate of the sessions established by all the terminals, and the AMBR of the subscription of the session may be obtained by the SMF entity and the UDM entity through communication interaction, or obtained by the AMF entity and the UDM entity through communication interaction, and sent to the SMF entity by the AMF entity; it should be further noted that, since the subscribed AMBR of the session is directly stored in the UDR entity, the PCF entity directly performs communication interaction with the UDR entity to obtain the subscribed AMBR of the session from the UDR entity.
Acquiring a user plane state of a session established by the terminal from a Session Management Function (SMF) entity;
the SMF entity records the state of whether each session of the terminal is activated, and the SMF entity needs to inform the PCF entity of the user plane states of all sessions in time, and specifically, the SMF entity can periodically report the user plane state of the session established by the terminal, or when the PCF entity needs the user plane state of the session, the SMF entity feeds back the user plane state of the session according to the request of the PCF entity.
It should be further noted that, when the user plane state of the session established by the terminal is updated, the PCF entity may further obtain the updated user plane state of the session from the SMF entity, and this is implemented in a manner that, when detecting that the user plane state of the session changes, the SMF entity sends the updated user plane state of the session to the PCF entity.
And determining the session aggregation maximum bit rate of the session with the user plane state being the activated state according to the user plane state and the signed aggregation maximum bit rate of the session established by the terminal.
It should be noted that, when acquiring the user plane state of a session, the PCF entity may know which sessions are in the active state, and then may determine the session-AMBR in the active state by using the subscribed-to-AMBR of the session in the active state, and optionally, after acquiring the subscribed-to-AMBR of each session in the active state, the PCF entity acquires the session-AMBR of each session in the active state according to a preset criterion, where it is noted that the preset criterion may be an operator policy formulated by an operator, for example, the operator policy is the session-AMBR taking a preset percentage of the subscribed-to-terminal as the session.
It should be noted that step 24 may be implemented as follows:
sending the aggregated maximum bit rate directly to the AMF entity; or
Feeding back the aggregated maximum bit rate to the AMF entity through the SMF entity.
In practical applications, a specific implementation process of the code rate control method according to the embodiment of the present invention is described as follows.
In this case, when the terminal registers in the network, the AMF entity requests the PCF entity to establish a terminal context in PCF, and the PCF entity requests the UDR entity for terminal subscription data so as to obtain UE-AMBR signed by the terminal; when a terminal establishes a Protocol Data Unit (PDU) session, AN SMF entity establishes a Policy and Charging Control (PCC) session to a PCF entity, the PCF entity determines a session-AMBR of the session, determines AN AMBR really used by the terminal according to a UE-AMBR signed by the terminal and the session-AMBR of the session currently activated by the UE, and sends the value of the AMBR to the AMF entity and then the AMF entity sends the value of the AMBR to AN AN to execute code rate control of the terminal.
As shown in fig. 3, the main implementation flow in this case is:
step 31, when the terminal registers to the network, the AMF entity requests the PCF entity to establish a terminal context on the PCF entity;
step 32, the PCF entity requests the UDR entity for terminal subscription data;
it should be noted that the acquired terminal subscription data includes UE-AMBR subscribed by the terminal, and optionally may also include AMBR subscribed by the UE for multiple sessions. It should be further noted that, after this step, if the UE-AMBR subscribed to by the terminal changes, the UDR entity may update the value of the subscribed UE-AMBR to the PCR entity; optionally, the value of the AMBR for the subscribed session is also updated.
Step 33, when the terminal establishes the PDU session, the SMF entity requests the PCF entity to establish a PCC session;
after the step, if the user plane of the PDU session is disconnected or activated, the SMF entity feeds back the state of the user plane of the session to the PCF entity in time.
Step 34, if the value of the AMBR signed by the terminal for the session is not stored in the current PCF entity, the PCR entity requests the UDR entity for signing data again, and obtains the AMBR signed by the session.
And the PCF entity determines the session-AMBR used by the session according to the AMBR signed by the session and the operator strategy. After this step, if the AMBR of the session signed by the terminal to which the terminal has signed changes, the UDR entity updates the value of the AMBR of the session to the PCF entity.
And step 35, the PCF entity determines the AMBR needed by the terminal according to the UE-AMBR signed by the terminal, the user plane state of the current session of the UE and the session-AMBR of the activated state session.
The specific implementation method includes, for example, adding values of session-AMBRs of active sessions, and if the calculated value is smaller than a UE-AMBR subscribed by the terminal, using the value as the AMBR used by the terminal, and if the calculated value is greater than or equal to the UE-AMBR subscribed by the terminal, using the UE-AMBR subscribed by the terminal as the AMBR used by the terminal.
Step 36, the PCF entity sends the determined AMBR used by the terminal to the AMF entity;
specifically, the PCF entity may be directly sent to the AMF entity, or the PCF entity may be sent to the AMF entity through the SMF entity.
Step 37, the AMF entity sends the AMBR used by the terminal to the AN;
the AN controls the data code rate of all non-GBR types of the terminal according to the AMBR used by the terminal, and if the data exceeds the AMBR, the data is discarded in the AN, so that the effective utilization of network resources is guaranteed.
In this case, when the AMF entity registers in the network, the AMF entity requests a UDM entity for terminal subscription data so as to obtain UE-AMBR signed by the terminal, and the AMF entity requests a PCF entity for establishing a terminal context in the PCF entity and sends the AMBR signed by the terminal to the PCF entity; when a PDU session is established at a terminal, AN SMF entity requests a PCF entity to establish a PCC session, the request comprises AN AMBR of the session signed by the terminal, the PCF entity determines a session-AMBR of the session according to the received AMBR of the session, and determines the AMBR really used by the terminal according to the UE-AMBR signed by the terminal and the session-AMBR of the session currently activated by the terminal, the PCF entity sends the value of the AMBR to the AMF entity, and then the AMF entity sends the value of the AMBR to AN AN to execute code rate control of the terminal.
As shown in fig. 4, the main implementation flow in this case is:
step 41, when the terminal registers to the network, the AMF entity requests the terminal to sign data to the UDM, so as to obtain the UE-AMBR signed by the terminal;
it should be noted that, after this step, if the UE-AMBR subscribed to by the terminal has changed, the UDM entity updates the value of the UE-AMBR subscribed to by the AMF entity.
Step 42, AMF entity requests PCF entity to establish terminal context in PCF entity, AMF entity includes UE-AMBR signed by terminal in the request;
it should be noted that, after this step, if the UE-AMBR subscribed to by the terminal changes, the AMF entity updates the value of the subscribed UE-AMBR to the PCF entity.
Step 43, when the terminal establishes the PDU session, the SMF entity requests the PCF entity to establish a PCC session, where the request includes an AMBR signed by the session of the terminal;
it should be noted that the SMF entity may directly obtain the AMBR of the session subscribed by the terminal from the UDM entity, or the AMF entity obtains the AMBR of the session subscribed by the terminal from the UDM entity and sends the AMBR to the SMF entity; and the PCF determines the session-AMBR of the session according to the received AMBR of the session and the operator policy. After this step, if the user plane of the PDU session is disconnected or activated, the SMF entity may timely feed back the user plane status of the session. After this step, if the AMBR of the session of the terminal is changed, the SMF entity updates the value of the AMBR of the session to the PCF entity.
Step 44, PCF entity determines AMBR needed to be used according to UE-AMBR signed by terminal, user plane state of current session of UE, and session-AMBR of active state session;
the specific implementation method includes, for example, adding values of session-AMBRs of active sessions, and if the calculated value is smaller than a UE-AMBR subscribed by the terminal, using the value as the AMBR used by the terminal, and if the calculated value is greater than or equal to the UE-AMBR subscribed by the terminal, using the UE-AMBR subscribed by the terminal as the AMBR used by the terminal.
Step 45, the PCF entity sends the AMBR used by the determined terminal to the AMF entity;
specifically, the PCF entity may be directly sent to the AMF entity, or the PCF entity may be sent to the AMF entity through the SMF entity.
Step 46, the AMF entity sends the AMBR used by the terminal to the AN;
the AN controls the data code rate of all non-GBR types of the terminal according to the AMBR used by the terminal, and if the data exceeds the AMBR, the data is discarded in the AN, so that the effective utilization of network resources is guaranteed.
The invention solves the problem of controlling the sum of the code rates of non-GBR data of all sessions of the whole terminal in the NextGen network, and the part of the sum of the code rates of all non-GBR type QoS data streams of one terminal, which exceeds the AMBR used by the terminal, can be discarded, thereby ensuring that network resources can be more effectively used and ensuring the reliability of network communication.
Example two
As shown in fig. 5, the policy control function entity 50 according to the embodiment of the present invention includes:
a first obtaining module 51, configured to obtain subscription data of the terminal when receiving request information for establishing a terminal context of an access and mobility management function AMF entity, where the subscription data includes a terminal aggregated maximum bit rate subscribed by the terminal;
a second obtaining module 52, configured to obtain a session aggregation maximum bit rate of a session in which the terminal is in an active state;
a determining module 53, configured to determine, according to the terminal aggregated maximum bit rate and the session aggregated maximum bit rate, an aggregated maximum bit rate used by the terminal;
a first feedback module 54, configured to feed back the aggregated maximum bit rate to the AMF entity, so that the AMF entity sends the aggregated maximum bit rate to the access network, and the access network controls the data code rate of the terminal according to the aggregated maximum bit rate.
Further, the first obtaining module 51 includes:
the first sending unit is used for sending a signing data acquisition request to the unified data storage UDR entity;
a first receiving unit, configured to receive subscription data including a terminal aggregated maximum bit rate subscribed by the terminal and fed back by the UDR entity.
Further, the first obtaining module 51 includes:
a first obtaining unit, configured to obtain, in the request information for establishing a context of the terminal, subscription data including a maximum bit rate aggregated by the terminal subscribed to the terminal.
Further, the second obtaining module 52 includes:
a second obtaining unit, configured to obtain an aggregated maximum bit rate of a subscription of a session established by a terminal;
a third obtaining unit, configured to obtain a user plane state of a session established by the terminal from a session management function SMF entity;
and the fourth obtaining unit is used for determining the session aggregation maximum bit rate of the session with the user plane state being the activated state according to the user plane state and the session subscription aggregation maximum bit rate established by the terminal.
Further, the second obtaining unit is configured to:
acquiring an aggregated maximum bit rate of a subscription of a session established by a terminal from an SMF entity; or
Obtaining an aggregated maximum bit rate for a subscription of a session established by a terminal from a UDR entity.
Optionally, the policy control function entity further includes:
and the third obtaining module is used for obtaining the user plane state of the session after updating from the SMF entity when the user plane state of the session established by the terminal is updated.
Further, the determining module 53 is configured to:
if the sum of the session aggregated maximum bit rates of all the sessions in the active state is greater than or equal to the terminal aggregated maximum bit rate, determining that the terminal aggregated maximum bit rate is the aggregated maximum bit rate used by the terminal, otherwise, determining that the sum of the session aggregated maximum bit rates of all the sessions in the active state is the aggregated maximum bit rate used by the terminal.
Further, the first feedback module 54 is configured to:
sending the aggregated maximum bit rate directly to the AMF entity; or
Feeding back the aggregated maximum bit rate to the AMF entity through the SMF entity.
It should be noted that the embodiment of the policy control function entity is a policy control function entity corresponding to the above method embodiments one to one, and all implementation manners in the above method embodiments are applicable to the embodiment of the policy control function entity, and the same technical effect can be achieved.
EXAMPLE III
As shown in fig. 6, an embodiment of the present invention provides a policy control function entity, including:
a processor 61; and a memory 63 connected to the processor 61 through a bus interface 62, wherein the memory 63 is used for storing a computer program used by the processor 61 in executing operations, and when the processor 61 calls and executes the computer program stored in the memory 63, the following processes are executed:
when receiving request information for establishing a terminal context of an access and mobility management function (AMF) entity by using a transceiver 64, acquiring subscription data of the terminal, wherein the subscription data comprises a terminal aggregation maximum bit rate signed by the terminal;
acquiring a session aggregation maximum bit rate of a session of the terminal in an activated state;
determining the maximum bit rate used by the terminal according to the maximum bit rate aggregated by the terminal and the maximum bit rate aggregated by the session;
the aggregate maximum bit rate is fed back to the AMF entity through the transceiver 64, so that the AMF entity sends the aggregate maximum bit rate to the access network, and the access network controls the data code rate of the terminal according to the aggregate maximum bit rate.
It is noted that the transceiver 64 is connected to the bus interface 62 for receiving the request information and the aggregate maximum bit rate used by the transmitting terminal under the control of the processor 61.
Optionally, the processor 61 further implements:
sending a subscription data acquisition request to the unified data storage UDR entity via transceiver 64;
and receiving subscription data which contains the terminal aggregation maximum bit rate subscribed by the terminal and is fed back by the UDR entity through a transceiver 64.
Optionally, the processor 61 further implements:
and acquiring subscription data containing the maximum bit rate of the terminal aggregation signed by the terminal from the request information for establishing the terminal context.
Optionally, the processor 61 further implements:
acquiring an aggregation maximum bit rate of a subscription of a session established by a terminal;
acquiring a user plane state of a session established by the terminal from a Session Management Function (SMF) entity;
and determining the session aggregation maximum bit rate of the session with the user plane state being the activated state according to the user plane state and the signed aggregation maximum bit rate of the session established by the terminal.
Optionally, the processor 61 further implements:
acquiring an aggregated maximum bit rate of a subscription of a session established by a terminal from an SMF entity; or
Obtaining an aggregated maximum bit rate for a subscription of a session established by a terminal from a UDR entity.
Optionally, the processor 61 further implements:
and when the user plane state of the session established by the terminal is updated, acquiring the updated user plane state of the session from the SMF entity.
Optionally, the processor 61 further implements:
if the sum of the session aggregated maximum bit rates of all the sessions in the active state is greater than or equal to the terminal aggregated maximum bit rate, determining that the terminal aggregated maximum bit rate is the aggregated maximum bit rate used by the terminal, otherwise, determining that the sum of the session aggregated maximum bit rates of all the sessions in the active state is the aggregated maximum bit rate used by the terminal.
Optionally, the processor 61 further implements:
sending the aggregated maximum bit rate directly to the AMF entity through a transceiver 64; or
Feeding back the aggregated maximum bit rate to the AMF entity through the SMF entity.
It should be noted that in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 61 and various circuits of memory represented by memory 63 being linked together. The bus architecture may also link together 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. The bus interface provides an interface. The transceiver 64 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 61 is responsible for managing the bus architecture and general processing, and the memory 63 may store data used by the processor 61 in performing operations.
Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.
Example four
As shown in fig. 7, an embodiment of the present invention provides a method for controlling a code rate, including:
step 71, when the terminal registers to the network, sending request information for establishing the context of the terminal to a policy control function PCF entity;
step 72, receiving the aggregated maximum bit rate used by the terminal fed back by the PCF entity according to the aggregated maximum bit rate of the terminal;
and 73, sending the aggregated maximum bit rate to an access network, so that the access network controls the data code rate of the terminal according to the aggregated maximum bit rate.
Optionally, when the request information includes subscription data including a terminal aggregated maximum bit rate signed by the terminal, the specific implementation manner of step 71 is:
when the terminal registers to the network, a signing data acquisition request is sent to a Unified Data Management (UDM) entity;
receiving subscription data which are fed back by the UDM entity and contain the maximum bit rate of terminal aggregation signed by the terminal;
and sending request information containing the subscription data for establishing the terminal context to the PCF entity.
In the first embodiment, all the descriptions about the access and mobility management functional entity are applied to the embodiment of the code rate control method applied to the access and mobility management functional entity, and the same technical effect as that can be achieved.
EXAMPLE five
As shown in fig. 8, an embodiment of the present invention provides an access and mobility management function entity 80, including:
a first sending module 81, configured to send, when the terminal registers in the network, request information for establishing a context of the terminal to a policy control function PCF entity;
a receiving module 82, configured to receive the aggregated maximum bit rate used by the terminal, which is fed back by the PCF entity according to the aggregated maximum bit rate of the terminal;
a second sending module 83, configured to send the aggregated maximum bit rate to an access network, so that the access network controls the data code rate of the terminal according to the aggregated maximum bit rate.
Optionally, when the request information includes subscription data including a maximum bit rate aggregated by a terminal subscribed by the terminal, the first sending module 81 includes:
the second sending unit is used for sending a signing data acquisition request to the Unified Data Management (UDM) entity when the terminal is registered to the network;
a second receiving unit, configured to receive subscription data including a terminal aggregated maximum bit rate for terminal subscription, fed back by the UDM entity;
a third sending unit, configured to send request information for establishing a terminal context, which includes the subscription data, to the PCF entity.
It should be noted that the embodiment of the access and mobility management functional entity is an access and mobility management functional entity corresponding to the above method embodiment one to one, and all implementation manners in the above method embodiment are applicable to the embodiment of the access and mobility management functional entity, and the same technical effect can also be achieved.
EXAMPLE six
As shown in fig. 9, an embodiment of the present invention provides an access and mobility management functional entity, including:
a processor 91; and a memory 93 connected to the processor 91 through a bus interface 92, wherein the memory 93 is used for storing a computer program used by the processor 91 in executing operations, and when the processor 91 calls and executes the computer program stored in the memory 93, the following processes are performed:
when the terminal registers to the network, it sends the request information for establishing the terminal context to the policy control function PCF entity through the transceiver 94;
receiving, by the transceiver 94, an aggregated maximum bit rate used by the terminal fed back by the PCF entity according to the aggregated maximum bit rate of the terminal;
and sending the aggregated maximum bit rate to an access network through the transceiver 94, so that the access network controls the data code rate of the terminal according to the aggregated maximum bit rate.
It is noted that a transceiver 94 is connected to the bus interface 92 for sending the request information and the aggregated maximum bit rate used by the terminal receiving the PCF entity feedback under the control of the processor 91.
When the request information includes subscription data including a terminal aggregated maximum bit rate for the terminal subscription, the processor 91 is further configured to perform the following process:
when the terminal registers to the network, a signing data acquisition request is sent to a Unified Data Management (UDM) entity;
receiving subscription data which are fed back by the UDM entity and contain the maximum bit rate of terminal aggregation signed by the terminal;
and sending request information containing the subscription data for establishing the terminal context to the PCF entity.
It should be noted that in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 91 and various circuits of memory represented by memory 93 being linked together. The bus architecture may also link together 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. The bus interface provides an interface. The transceiver 94 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 91 is responsible for managing the bus architecture and general processing, and the memory 93 may store data used by the processor 91 in performing operations.
Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.
EXAMPLE seven
As shown in fig. 10, an embodiment of the present invention provides a method for controlling a code rate, including:
step 101, when a terminal establishes a protocol data unit PDU session, requesting a Policy Control Function (PCF) entity to establish a Policy and Charging Control (PCC) session;
and step 102, feeding back the user plane state of the PDU session to the PCF entity.
Optionally, the code rate control method further includes:
sending the acquired maximum bit rate of the PDU session subscription aggregation to the PCF entity; wherein the content of the first and second substances,
the signed maximum aggregated bit rate is obtained by a Session Management Function (SMF) entity directly from a Unified Data Management (UDM) entity, or the signed maximum aggregated bit rate is sent to the SMF entity by a receiving access and mobility management function (AMF) entity.
Optionally, the code rate control method further includes:
and receiving the aggregated maximum bit rate sent by the PCF entity, and feeding back the aggregated maximum bit rate to an access and mobility management function (AMF) entity.
Optionally, the code rate control method further includes:
and when the user plane state of the session established by the terminal is updated, sending the updated user plane state of the session to the PCF entity.
In the first embodiment, all the descriptions about the session management function entity are applicable to the embodiment of the code rate control method applied to the session management function entity, and the same technical effects as those of the embodiment can be achieved.
Example eight
As shown in fig. 11, an embodiment of the present invention provides a session management function entity 110, including:
a request module 111, configured to request a policy control function PCF entity to establish a policy and charging control PCC session when a terminal establishes a protocol data unit PDU session;
and a second feedback module 112, configured to feed back the user plane status of the PDU session to the PCF entity.
Optionally, the session management function entity 110 further includes:
a third sending module, configured to send the obtained maximum bit rate of the PDU session subscription aggregation to the PCF entity; wherein the content of the first and second substances,
the signed maximum aggregated bit rate is obtained by a Session Management Function (SMF) entity directly from a Unified Data Management (UDM) entity, or the signed maximum aggregated bit rate is sent to the SMF entity by a receiving access and mobility management function (AMF) entity.
Optionally, the session management function entity 110 further includes:
and the third feedback module is used for receiving the aggregated maximum bit rate sent by the PCF entity and feeding back the aggregated maximum bit rate to the access and mobility management function AMF entity.
Optionally, the session management function entity 110 further includes:
and the fourth sending module is used for sending the updated user plane state of the session to the PCF entity when the user plane state of the session established by the terminal is updated.
It should be noted that the embodiment of the session management function entity is a session management function entity corresponding to the above method embodiments one to one, and all implementation manners in the above method embodiments are applicable to the embodiment of the session management function entity, and the same technical effect can also be achieved.
Example nine
As shown in fig. 12, an embodiment of the present invention provides a session management function entity, including:
a processor 121; and a memory 123 connected to the processor 121 through the bus interface 122, wherein the memory 123 is used for storing a computer program used by the processor 121 when executing operations, and when the processor 121 calls and executes the computer program stored in the memory 123, the following processes are performed:
when a terminal establishes a Protocol Data Unit (PDU) session, a request is made to a Policy Control Function (PCF) entity for establishing a Policy and Charging Control (PCC) session;
the user plane status of the PDU session is fed back to the PCF entity via transceiver 124.
It is noted that the transceiver 124 is connected to the bus interface 122 for sending a session establishment request under the control of the processor 121.
Optionally, the processor 121 is further configured to perform the following processes:
sending the acquired maximum bit rate of the PDU session subscription aggregation to the PCF entity; wherein the content of the first and second substances,
the signed maximum aggregated bit rate is obtained by a Session Management Function (SMF) entity directly from a Unified Data Management (UDM) entity, or the signed maximum aggregated bit rate is sent to the SMF entity by a receiving access and mobility management function (AMF) entity.
Optionally, the processor 121 is further configured to perform the following processes:
the aggregated maximum bit rate sent by the PCF entity is received by the transceiver 124 and fed back to the access and mobility management function AMF entity.
Optionally, the processor 121 is further configured to perform the following processes:
and when the user plane state of the session established by the terminal is updated, sending the updated user plane state of the session to the PCF entity.
It should be noted that in fig. 12, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 121 and various circuits of memory represented by memory 123 being linked together. The bus architecture may also link together 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. The bus interface provides an interface. The transceiver 124 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 121 is responsible for managing a bus architecture and general processing, and the memory 123 may store data used by the processor 121 when performing operations.
Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims (22)

1. A code rate control method is applied to a Policy Control Function (PCF) entity, and is characterized by comprising the following steps:
when request information for establishing a terminal context of an access and mobility management function (AMF) entity is received, acquiring signing data of the terminal, wherein the signing data comprises a terminal aggregation maximum bit rate signed by the terminal;
acquiring a session aggregation maximum bit rate of a session of the terminal in an activated state;
determining the maximum bit rate used by the terminal according to the maximum bit rate aggregated by the terminal and the maximum bit rate aggregated by the session;
feeding back the aggregated maximum bit rate to the AMF entity, so that the AMF entity sends the aggregated maximum bit rate to an access network, and the access network controls the data code rate of the terminal according to the aggregated maximum bit rate;
wherein, the request information includes the subscription data of the terminal aggregation maximum bit rate signed by the terminal.
2. The code rate control method according to claim 1, wherein the step of obtaining the subscription data of the terminal comprises:
sending a signing data acquisition request to a unified data storage (UDR) entity;
and receiving subscription data which are fed back by the UDR entity and contain the maximum bit rate of terminal aggregation signed by the terminal.
3. The code rate control method according to claim 1, wherein the step of obtaining the subscription data of the terminal comprises:
and acquiring subscription data containing the maximum bit rate of the terminal aggregation signed by the terminal from the request information for establishing the terminal context.
4. The rate control method according to claim 1, wherein the step of obtaining the session aggregated maximum bit rate of the session in which the terminal is in the active state comprises:
acquiring an aggregation maximum bit rate of a subscription of a session established by a terminal;
acquiring a user plane state of a session established by the terminal from a Session Management Function (SMF) entity;
and determining the session aggregation maximum bit rate of the session with the user plane state being the activated state according to the user plane state and the signed aggregation maximum bit rate of the session established by the terminal.
5. The rate control method of claim 4, wherein the step of obtaining the contracted aggregated maximum bit rate for the session established by the terminal comprises:
acquiring an aggregated maximum bit rate of a subscription of a session established by a terminal from an SMF entity; or
Obtaining an aggregated maximum bit rate for a subscription of a session established by a terminal from a UDR entity.
6. The code rate control method of claim 4, further comprising:
and when the user plane state of the session established by the terminal is updated, acquiring the updated user plane state of the session from the SMF entity.
7. The rate control method of claim 1, wherein the step of determining the aggregated maximum bit rate used by the terminal based on the terminal aggregated maximum bit rate and the session aggregated maximum bit rate comprises:
if the sum of the session aggregated maximum bit rates of all the sessions in the active state is greater than or equal to the terminal aggregated maximum bit rate, determining that the terminal aggregated maximum bit rate is the aggregated maximum bit rate used by the terminal, otherwise, determining that the sum of the session aggregated maximum bit rates of all the sessions in the active state is the aggregated maximum bit rate used by the terminal.
8. The rate control method of claim 1, wherein the step of feeding back the aggregated maximum bit rate to the AMF entity comprises:
sending the aggregated maximum bit rate directly to the AMF entity; or
Feeding back the aggregated maximum bit rate to the AMF entity through the SMF entity.
9. A policy control function entity, comprising:
the system comprises a first acquisition module, a first mapping module and a second acquisition module, wherein the first acquisition module is used for acquiring the signing data of the terminal when receiving request information for establishing a terminal context of an access and mobility management function (AMF) entity, and the signing data comprises the terminal aggregation maximum bit rate signed by the terminal;
a second obtaining module, configured to obtain a session aggregation maximum bit rate of a session in an active state of the terminal;
a determining module, configured to determine an aggregated maximum bit rate used by the terminal according to the terminal aggregated maximum bit rate and the session aggregated maximum bit rate;
a first feedback module, configured to feed back the aggregated maximum bit rate to an AMF entity, so that the AMF entity sends the aggregated maximum bit rate to an access network, and the access network controls a data code rate of the terminal according to the aggregated maximum bit rate;
wherein, the request information includes the subscription data of the terminal aggregation maximum bit rate signed by the terminal.
10. The policy control function entity according to claim 9, wherein said first obtaining module comprises:
the first sending unit is used for sending a signing data acquisition request to the unified data storage UDR entity;
a first receiving unit, configured to receive subscription data including a terminal aggregated maximum bit rate subscribed by the terminal and fed back by the UDR entity.
11. The policy control function entity according to claim 9, wherein said first obtaining module comprises:
a first obtaining unit, configured to obtain, in the request information for establishing a context of the terminal, subscription data including a maximum bit rate aggregated by the terminal subscribed to the terminal.
12. The policy control function entity according to claim 9, wherein said second obtaining module comprises:
a second obtaining unit, configured to obtain an aggregated maximum bit rate of a subscription of a session established by a terminal;
a third obtaining unit, configured to obtain a user plane state of a session established by the terminal from a session management function SMF entity;
and the fourth obtaining unit is used for determining the session aggregation maximum bit rate of the session with the user plane state being the activated state according to the user plane state and the session subscription aggregation maximum bit rate established by the terminal.
13. The policy control function entity according to claim 12, wherein said second obtaining unit is configured to:
acquiring an aggregated maximum bit rate of a subscription of a session established by a terminal from an SMF entity; or
Obtaining an aggregated maximum bit rate for a subscription of a session established by a terminal from a UDR entity.
14. The policy control function entity according to claim 12, further comprising:
and the third obtaining module is used for obtaining the user plane state of the session after updating from the SMF entity when the user plane state of the session established by the terminal is updated.
15. The policy control function entity according to claim 9, wherein said determining module is configured to:
if the sum of the session aggregated maximum bit rates of all the sessions in the active state is greater than or equal to the terminal aggregated maximum bit rate, determining that the terminal aggregated maximum bit rate is the aggregated maximum bit rate used by the terminal, otherwise, determining that the sum of the session aggregated maximum bit rates of all the sessions in the active state is the aggregated maximum bit rate used by the terminal.
16. The policy control function entity according to claim 9, wherein said first feedback module is configured to:
sending the aggregated maximum bit rate directly to the AMF entity; or
Feeding back the aggregated maximum bit rate to the AMF entity through the SMF entity.
17. A policy control function entity comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the rate control method according to any one of claims 1 to 8 when executing the computer program.
18. A method for rate control, comprising:
when a terminal registers to a network, sending request information for establishing a terminal context to a Policy Control Function (PCF) entity;
receiving the aggregation maximum bit rate used by the terminal fed back by the PCF entity according to the aggregation maximum bit rate of the terminal;
sending the aggregated maximum bit rate to an access network, so that the access network controls the data code rate of the terminal according to the aggregated maximum bit rate;
wherein, the request information includes the subscription data of the terminal aggregation maximum bit rate signed by the terminal.
19. The rate control method of claim 18, wherein the step of sending a request message for establishing a context of the terminal to a Policy Control Function (PCF) entity when the terminal registers to the network comprises:
when the terminal registers to the network, a signing data acquisition request is sent to a Unified Data Management (UDM) entity;
receiving subscription data which are fed back by the UDM entity and contain the maximum bit rate of terminal aggregation signed by the terminal;
and sending request information containing the subscription data for establishing the terminal context to the PCF entity.
20. An access and mobility management function entity, comprising:
the first sending module is used for sending request information for establishing the context of the terminal to a Policy Control Function (PCF) entity when the terminal is registered to a network;
a receiving module, configured to receive an aggregated maximum bit rate used by the terminal, where the aggregated maximum bit rate is fed back by the PCF entity according to the terminal aggregated maximum bit rate;
a second sending module, configured to send the aggregated maximum bit rate to an access network, so that the access network controls a data code rate of the terminal according to the aggregated maximum bit rate;
wherein, the request information includes the subscription data of the terminal aggregation maximum bit rate signed by the terminal.
21. The access and mobility management function entity according to claim 20, wherein the first sending module comprises:
the second sending unit is used for sending a signing data acquisition request to the Unified Data Management (UDM) entity when the terminal is registered to the network;
a second receiving unit, configured to receive subscription data including a terminal aggregated maximum bit rate for terminal subscription, fed back by the UDM entity;
a third sending unit, configured to send request information for establishing a terminal context, which includes the subscription data, to the PCF entity.
22. An access and mobility management functional entity comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps in the rate control method according to claim 18 or 19 when executing the computer program.
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