CN113556778B - Guaranteed bit rate data transmission control method, device, system and medium - Google Patents

Guaranteed bit rate data transmission control method, device, system and medium Download PDF

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Publication number
CN113556778B
CN113556778B CN202010339681.XA CN202010339681A CN113556778B CN 113556778 B CN113556778 B CN 113556778B CN 202010339681 A CN202010339681 A CN 202010339681A CN 113556778 B CN113556778 B CN 113556778B
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gbr
pcf
session
establishment request
session establishment
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CN113556778A (en
Inventor
孙悦
龙彪
王丹墨
刘佳一凡
刘柳
黎明雪
张琳峰
王庆扬
赵晔
王波
曹磊
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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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
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate

Abstract

The present disclosure provides a guaranteed bit rate data transmission control method, apparatus, system, and storage medium, wherein the method includes: the PCF receives a session establishment request initiated by the terminal and used for establishing a guaranteed bit rate GBR session on a network slice; the PCF acquires first GBR limit information, wherein the first GBR limit information comprises the following steps: ensuring a slice bit rate GSBR and a maximum slice bit rate MSBR; the PCF processes the session establishment request according to the first GBR limit information. Methods, apparatus, systems, and storage media of the present disclosure use QoS parameters GSBR and MSBR based on network slicing dimensions for performing slice-level GBR data rate limiting; the rate of the multi-PDU session on the network slice is distributed based on GSBR and MSBR, so that the session quality and efficiency can be ensured.

Description

Guaranteed bit rate data transmission control method, device, system and medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a system, and a storage medium for controlling transmission of guaranteed bit rate data.
Background
Network slicing is one of key technologies of a 5G bearing scheme, and a plurality of different logic networks are virtualized on a unified network infrastructure by utilizing a virtualization technology to respectively meet different service and user requirements. GBR (Guaranteed Bit Rate ) refers to the minimum bit rate that the system guarantees to carry, the corresponding bit rate being maintained even in case of network resource shortage. The 5G QoS model supports GBR flows, i.e. GBR QoS flows, but there is no network slice level based data rate limiting solution in the current 5G standard to support GBR flows.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a method, apparatus, system and storage medium for controlling transmission of guaranteed bit rate data.
According to an aspect of the present disclosure, there is provided a guaranteed bit rate data transmission control method including: the PCF receives a session establishment request initiated by a terminal and used for establishing a guaranteed bit rate GBR session on a network slice; the PCF acquires first GBR limit information; wherein the first GBR restriction information includes: ensuring a slice bit rate GSBR and a maximum slice bit rate MSBR; and the PCF processes the session establishment request according to the first GBR limit information.
Optionally, the PCF processing the session establishment request according to the first GBR restriction information comprises: the PCF obtains GBR total values corresponding to all first GBR flows currently on the network slice; the PCF obtains GBR requirement value and maximum bit rate MBR value corresponding to the second GBR flow; the second GBR flow is a GBR flow to be established corresponding to the session establishment request; the PCF processes the session establishment request according to the GBR total value, the GBR requirement value, the MBR value and the first GBR limit information.
Optionally, the PCF obtaining the first GBR restriction information includes: the PCF obtains the first GBR restriction information from a unified data repository UDR.
Optionally, the PCF processing the session establishment request according to the GBR total value, the GBR demand value, the MBR value, and the first GBR restriction information comprises: the PCF determines whether the sum of the GBR total value and the GBR demand value is less than or equal to the GSBR, and whether the MBR value is less than or equal to the MSBR; if not, the PCF refuses to establish the second GBR flow; if so, the PCF sends the session establishment request to the RAN side node.
Optionally, the RAN side node obtains second GBR restriction information; wherein the second GBR restriction information includes: the GSBR and the MSBR; and the RAN side node processes the session establishment request according to the second GBR limit information.
Optionally, the PCF sends the second GBR restriction information to the RAN-side node through an access and mobility management function AMF.
Optionally, the PCF receives an AM policy control association request sent by the AMF; after receiving the registration information sent by the terminal, the AMF sends the AM policy control association request; the PCF acquires access and mobility related policy information from the UDR; wherein the access and mobility related policy information comprises: the second GBR restriction information; the PCF returns the access and mobility related policy information to the AMF; the AMF sends the access and mobility related policy information to the RAN-side node.
Optionally, the RAN-side node processing the session establishment request according to the second GBR restriction information includes: and if the RAN side node judges that the sum of the GBR total value and the GBR required value is larger than the GSBR and/or the MBR value is larger than the MSBR, acquiring a 5G service quality identifier (5 QI) based on the session establishment request, and processing the session establishment request according to the 5 QI.
Optionally, the PCF receiving a session establishment request initiated by the terminal for establishing a guaranteed bit rate GBR session on a network slice comprises: the terminal sends the session establishment request to an AMF for establishing the GBR session on the network slice; the PCF receives the session establishment request sent by the AMF.
According to another aspect of the present disclosure, there is provided a policy control function apparatus including: a session request receiving module, configured to receive a session establishment request initiated by a terminal and used for establishing a guaranteed bit rate GBR session on a network slice; the limit information acquisition module is used for acquiring first GBR limit information; wherein the first GBR restriction information includes: ensuring a slice bit rate GSBR and a maximum slice bit rate MSBR; and the session request processing module is used for processing the session establishment request according to the first GBR limit information.
Optionally, the session request processing module includes: an information obtaining unit, configured to obtain GBR total values corresponding to all first GBR flows currently on the network slice; acquiring a GBR requirement value and a maximum bit rate MBR value corresponding to the second GBR flow; the second GBR flow is a GBR flow to be established corresponding to the session establishment request; and a processing unit, configured to process the session establishment request according to the GBR total value, the GBR demand value, the MBR value, and the first GBR restriction information.
Optionally, the limitation information obtaining module is configured to obtain the first GBR limitation information from a unified data repository UDR.
Optionally, the processing unit is configured to determine whether the sum of the GBR total value and the GBR required value is less than or equal to the GSBR, and whether the MBR value is less than or equal to the MSBR; if not, refusing to establish the second GBR flow; if yes, the session establishment request is sent to the RAN side node; the RAN side node obtains second GBR restriction information, where the second GBR restriction information includes: the GSBR and the MSBR; and the RAN side node processes the session establishment request according to the second GBR limit information.
Optionally, the policy information processing module is configured to send the second GBR restriction information to the RAN-side node through an access and mobility management function AMF.
Optionally, the policy information processing module is configured to receive an AM policy control association request sent by the AMF; after receiving the registration information sent by the terminal, the AMF sends the AM policy control association request; obtaining access and mobility related policy information from the UDR, the access and mobility related policy information comprising: the second GBR restriction information; and returning the access and mobility related policy information to the AMF so that the AMF sends the access and mobility related policy information to the RAN side node.
Optionally, if the RAN side node determines that the sum of the GBR total value and the GBR required value is greater than the GSBR and/or the MBR value is greater than the MSBR, the RAN side node obtains a 5G quality of service identifier 5QI based on the session establishment request, and processes the session establishment request according to the 5 QI.
Optionally, the terminal sends the session establishment request to an AMF for establishing the GBR session on the network slice; the session request receiving module is configured to receive the session establishment request sent by the AMF.
According to still another aspect of the present disclosure, there is provided a policy control function apparatus including: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
According to still another aspect of the present disclosure, there is provided a guaranteed bit rate data transmission control system including: PCF, AMF, and RAN side node; the PCF is configured to perform the method as described above.
According to yet another aspect of the present disclosure, there is provided a computer-readable storage medium storing computer instructions for execution by a processor to perform the method as described above.
The guaranteed bit rate data transmission control method, device, system and storage medium of the present disclosure, aiming at the problem of GBR data rate limitation lacking network slice dimension, use QoS parameters GSBR and MSBR based on network slice dimension for GBR data rate limitation at slice level; the rate of the multi-PDU session on the network slice is distributed based on GSBR and MSBR, so that the session quality and efficiency can be ensured, the network slice resources can be conveniently and reasonably configured, and the transmission efficiency of GBR data streams in the network slice is improved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the description of the prior art, it being obvious that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a flow diagram of one embodiment of a guaranteed bit rate data transmission control method according to the present disclosure;
fig. 2 is a flow diagram of processing a session establishment request by a PCF in one embodiment of a guaranteed bit rate data transmission control method in accordance with the present disclosure;
fig. 3 is a flow diagram of a RAN-side node processing a session establishment request in one embodiment of a guaranteed bit rate data transmission control method according to the present disclosure;
fig. 4 is a flow diagram of AM policy establishment in one embodiment of a guaranteed bit rate data transmission control method according to the present disclosure;
FIG. 5 is a block diagram of one embodiment of a policy control function according to the present disclosure;
FIG. 6 is a block diagram of a session request processing module in one embodiment of a policy control function device according to the present disclosure;
FIG. 7 is a block diagram of another embodiment of a policy control function according to the present disclosure;
FIG. 8 is a block diagram of yet another embodiment of a policy control function according to the present disclosure;
fig. 9 is a block diagram of one embodiment of a guaranteed bit rate data transmission control system according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
The following "first", "second", etc. are used merely to describe differences and are not otherwise specifically meant.
The inventors found that for GBR QoS flows in the related art, the currently existing QoS parameters are Maximum Flow Bit Rate (MFBR) and guaranteed traffic bit rate (GFBR) for the flows, and the limitation for the data rate is a data rate limitation for PDU session dimension (session-AMBR) or UE dimension (UE-AMBR), without a data rate limitation for slice dimension, i.e. without a corresponding solution for data rate limitation based on network slice level.
Fig. 1 is a flow chart illustrating an embodiment of a guaranteed bit rate data transmission control method according to the present disclosure, as shown in fig. 1:
in step 101, the pcf (Policy Control function ) receives a terminal initiated session establishment request for establishing a guaranteed bit rate GBR session on a network slice.
The terminal can be a mobile phone, a tablet computer and the like. The terminal sends a session establishment request to the AMF, which may be a protocol data unit PDU session establishment request for establishing a GBR session on the network slice. The AMF (Access and Mobility Management Function ) receives a session establishment request from the terminal and sends it to the PCF.
Step 102, the pcf obtains first GBR restriction information, which includes guaranteed slice bit rate GSBR and maximum slice bit rate MSBR.
Aiming at the problem of GBR data rate limitation lacking network slice dimension in the related technology, qoS parameters for GBR data rate limitation based on the network slice dimension are provided, which are respectively the uplink bit rate and the downlink bit rate of the guaranteed network slice.
The first GBR restriction information includes QoS parameters based on network slice dimensions, GSBR (Guaranteed Slice Bit Rate ) and MSBR (Maximum Slice Bit Rate, maximum slice bit rate), respectively. The GSBR includes GSBR-UL and DL, that is, uplink GSBR and downlink GSBR, and the MSBR includes MSBR-UL and DL, that is, uplink MSBR and downlink MSBR.
Corresponding GSBR and MSBR may be set for each network slice, and stored in UDR (unified data repository ). The UDR may store various data used by the PCM, and the PCF may acquire the first GBR restriction information from the UDR in advance, or may acquire the first GBR restriction information from the UDR after receiving the session establishment request.
Step 103, the pcf processes the session establishment request according to the first GBR restriction information.
The present disclosure proposes QoS parameters GSBR and MSBR based on network slice dimensions, which are used for performing GBR data rate limitation at a slice level, and allocate rates of multiple PDU sessions on a network slice based on the GSBR and the MSBR, that is, for multiple PDU sessions on the same network slice, under the condition that the MSBR cannot guarantee uplink and downlink rates of all PDU sessions, PDU session quality and efficiency can be guaranteed.
Fig. 2 is a flow chart illustrating processing of a session establishment request by a PCF in an embodiment of a guaranteed bit rate data transmission control method according to the present disclosure, as shown in fig. 2:
step 201, the pcf obtains a GBR total value corresponding to all first GBR flows currently on the network slice.
QoS parameters may be set for GBR flows (GBR QoS flows), including guaranteed traffic bit rate GFBR and maximum flow bit rate MFBR. The PCF may obtain, by a plurality of methods, a GBR total value corresponding to all first GBR flows currently on the network slice, e.g., the terminal initiates a session establishment request, when other GBR data flows have been established on the network slice; the PCF may obtain from the UDR the GFBR for each first GBR flow currently present on the network slice, add the GFBRs for each first GBR flow, and calculate the GBR total value corresponding to all first GBR flows.
Step 202, the pcf obtains a GBR demand value and a maximum bit rate MBR value corresponding to a second GBR flow, which is a GBR flow to be established corresponding to the session establishment request.
The PCF may obtain from the UDR the GFBR and MFBR of the second GBR flow to be established corresponding to the session establishment request, and determine this GFBR and MFBR as the GBR requirement value and maximum bit rate MBR value corresponding to the second GBR flow.
Step 203, the pcf processes the session establishment request according to the GBR total value, GBR requirement value, MBR value, and the first GBR restriction information.
The PCF may use a variety of methods for the session establishment request based on the GBR total value, the GBR demand value, the MBR value, and the first GBR restriction information. Fig. 3 is a flow chart illustrating processing of a session establishment request by a RAN-side node in an embodiment of a guaranteed bit rate data transmission control method according to the present disclosure, as shown in fig. 3:
in step 301, the pcf receives a session establishment request sent by the AMF.
The terminal initiates a PDU Session on a certain network slice, and sends a PDU Session connection request on the network slice to the AMF, where the request includes information such as GBR data flow identifier, DNN (Data Network Name ), S-nsai (Single Network Slice Selection Assistance Information, network slice selection auxiliary information), and the like. The AMF sends this session establishment request to the PCF.
Step 302, the pcf determines whether the sum of the GBR total value and the GBR demand value is less than or equal to GSBR, and whether the MBR value is less than or equal to MSBR; if not, go to step 303, if yes, go to step 304.
Step 303, the pcf refuses to establish the second GBR flow.
Step 304, the pcf sends a session establishment request to the RAN (Radio Access Network ) side node. There are a variety of RAN-side nodes including, for example, a gNB, etc.
In an embodiment, the PCF may compare whether the sum of the GBR of the existing flow on the network slice and the GBR of the newly established flow is less than or equal to the GSBR of the network slice, and whether the MBR of the newly established flow is less than or equal to the MSBR, if not, the session request establishment is denied, and if so, the request is issued to the RAN side.
In step 305, the ran side node obtains second GBR restriction information, where the second GBR restriction information includes GSBR and MSBR. And the RAN side node processes the session establishment request according to the second GBR limit information.
Step 306, the ran side node determines whether the sum of the GBR total value and the GBR required value is less than or equal to GSBR, and whether the MBR value is less than or equal to MSBR; if not, go to step 307, if yes, go to step 308.
In step 307, the ran-side node establishes a second GBR flow and allocates resources. The second GBR flow may be established and resources allocated using existing methods.
Step 308, if it is determined that the sum of the GBR total value and the GBR required value is greater than GSBR and/or the MBR value is greater than MSBR, a 5G quality of service identifier 5QI is obtained based on the session establishment request, and the session establishment request is processed according to the 5 QI.
The RAN side node judges whether the RAN resource can meet the rate requirement of the second GBR, if not, the existing method can be adopted to acquire the 5G service quality identifier 5QI, the RAN side node processes the session establishment request according to the 5QI value of the second GBR flow, namely, the RAN side node firstly meets the high-priority GBR flow based on the corresponding default priority, and the rest is distributed to the low-priority GBR flow or is removed from the network slice.
In one embodiment, the PCF sends the second GBR restriction information to the RAN-side node via the AMF. In the AM policy establishment process, GSBR-UL and DL and MSBR-UL and DL information are added in the access and mobility related policy information of PCF response AMF, which are used for describing the guaranteed slice bit rate and the maximum slice bit rate of the slice, and the GBR data stream is subjected to rate limitation.
Fig. 4 is a flow chart illustrating AM policy establishment in one embodiment of a guaranteed bit rate data transmission control method according to the present disclosure, as shown in fig. 4:
in step 401, the amf determines to establish Policy Association a policy association.
In step 402, the AMF sends an npcf_AMPolicControl generation request.
Step 403, the pcf sends a nudr_dm_subscribe subscription message.
In step 404, the udr returns a nudr_dm_notify (including GSBR, MSBR) message.
Step 405, pcf returns npcf_ampoliccontrol to generate a response message (Access and mobility related policy information, including Service Area Restrictions, GSBR, MSBR).
At step 406, access and mobility control policies access and mobility control policy are deployed.
After receiving the registration information sent by the terminal, the AMF sends an AM policy control association request; the PCF receives an AM policy control association request sent by the AMF, and acquires access and mobility related policy information from the UDR, wherein the access and mobility related policy information comprises second GBR limit information; the PCF returns access and mobility related policy information to the AMF.
The AMF sends access and mobility related policy information to the RAN-side node. When receiving the session request sent by PCF, the RAN side node obtains GSBR and MSBR of the second GBR limit information from the access and mobility related strategy information, and performs corresponding session processing.
In one embodiment, in the process of establishing the AM policy, GSBR-UL and DL and MSBR-UL and DL information are added in the access and mobility related policy information of the PCF responding to the AMF, and the GSBR-UL and DL information is used for describing the guaranteed slice bit rate and the maximum slice bit rate of the slice, and the GBR data stream is subjected to rate limitation.
The GSBR and MSBR are issued to the RAN side through PCF-AMF at the time of terminal registration. When a terminal initiates a certain GBR session request at a network slice, the PCF compares whether the sum of the GBR of the existing flow and the GBR of the newly established flow is smaller than or equal to the GSBR of the slice and whether the MBR of the newly established flow is smaller than or equal to the MSBR. If not, directly rejecting the session request; if so, the request is issued to the RAN side. On the RAN side, if the resources on the RAN side cannot meet the GBR of the flow, the RAN side processes the GBR flow according to the 5QI value of the GBR flow, i.e. corresponding to the default priority, the high priority GBR flow is met first, and the rest is allocated to the low priority GBR flow or removed from the slice.
According to the guaranteed bit rate data transmission control method in the embodiment, aiming at the problem of the lack of GBR data rate limitation of the network slice dimension, qoS parameters GSBR and MSBR based on the network slice dimension are used for performing GBR data rate limitation of the slice level, and the rate of a multi-PDU session on the network slice is distributed based on the GSBR and the MSBR, so that the session quality and the session efficiency can be ensured; when a session on a network slice is established, rate limitation can be performed on the network slice, so that network slice resources are conveniently and reasonably configured, and the transmission efficiency of GBR data streams in the network slice is improved.
In one embodiment, as shown in fig. 5, the present disclosure provides a policy control function device 50 comprising: a session request receiving module 51, a constraint information acquiring module 52 and a session request processing module 53. The session request receiving module 51 receives a session establishment request initiated by the terminal for establishing a guaranteed bit rate GBR session on a network slice. The session request receiving module 51 receives a session establishment request sent by the AMF.
The limitation information obtaining module 52 obtains first GBR limitation information including: the slice bit rate GSBR and the maximum slice bit rate MSBR are guaranteed. The session request processing module 53 processes the session establishment request according to the first GBR restriction information. The constraint information acquisition module 52 may acquire the first GBR constraint information from the unified data repository UDR.
In one embodiment, as shown in fig. 6, the session request processing module 53 includes: an information acquisition unit 531 and a processing unit 532. The information obtaining unit 531 obtains the GBR total value corresponding to all the first GBR flows currently on the network slice, and obtains the GBR demand value and the maximum bit rate MBR value corresponding to the second GBR flow, which is the GBR flow to be established corresponding to the session establishment request. The processing unit 532 processes the session establishment request according to the GBR total value, the GBR requirement value, the MBR value, and the first GBR restriction information.
The processing unit 532 determines whether the sum of the GBR total value and the GBR demand value is less than or equal to GSBR, and whether the MBR value is less than or equal to MSBR; if not, refusing to establish a second GBR flow; if so, the processing unit 532 sends a session establishment request to the RAN-side node; the RAN side node acquires second GBR limit information, wherein the second GBR limit information comprises GSBR and MSBR; and the RAN side node processes the session establishment request according to the second GBR limit information.
In one embodiment, as shown in fig. 7, the policy control function device 50 includes a policy information processing module 54, and the policy information processing module 54 sends the second GBR restriction information to the RAN-side node through the access and mobility management function AMF.
The policy information processing module 54 receives an AM policy control association request sent by the AMF, where the AMF sends the AM policy control association request after receiving the registration information sent by the terminal. The policy information handling module 54 obtains access and mobility related policy information from the UDR, the access and mobility related policy information comprising the second GBR restriction information. The policy information handling module 54 returns the access and mobility related policy information to the AMF so that the AMF sends the access and mobility related policy information to the RAN-side node.
And if the RAN side node judges that the sum of the GBR total value and the GBR required value is larger than the GSBR and/or the MBR value is larger than the MSBR, acquiring a 5G service quality identifier (5 QI) based on the session establishment request, and processing the session establishment request according to the 5 QI.
Fig. 8 is a block diagram of yet another embodiment of a policy control function according to the present disclosure. As shown in fig. 8, the apparatus may include a memory 81, a processor 82, a communication interface 83, and a bus 84. The memory 81 is used for storing instructions, the processor 82 is coupled to the memory 81, and the processor 82 is configured to implement the guaranteed bit rate data transmission control method described above based on the instructions stored in the memory 81.
The memory 81 may be a high-speed RAM memory, a nonvolatile memory (non-volatile memory), or the like, and the memory 81 may be a memory array. The memory 81 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor 82 may be a central processing unit CPU, or an application specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the guaranteed bit rate data transfer control method of the present disclosure.
In one embodiment, as shown in fig. 9, the present disclosure provides a guaranteed bit rate data transmission control system, comprising: PCF93, AMF91, and RAN-side node 92; PCF93 is configured to perform the guaranteed bit rate data transmission control method in any of the embodiments described above. The terminal 90 sends a session establishment request to the AMF91 for establishing a GBR session on the network slice.
In one embodiment, the present disclosure provides a computer readable storage medium having stored thereon computer instructions for execution by a processor of the guaranteed bit rate data transmission control method of any of the embodiments above.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
The guaranteed bit rate data transmission control method, device, system and storage medium in the above embodiments, aiming at the problem of GBR data rate limitation lacking network slice dimension, use QoS parameters GSBR and MSBR based on network slice dimension for GBR data rate limitation at slice level, allocate the rate of multi-PDU session on network slice based on GSBR and MSBR, and can guarantee session quality and efficiency; when the session on the network slice is established, the rate limitation can be carried out on the network slice, so that the network slice resources are conveniently and reasonably configured, the transmission efficiency of GBR data streams in the network slice is improved, the network service cost of operators is saved, and the use experience of users can be improved.
The methods and systems of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (17)

1. A guaranteed bit rate data transmission control method, comprising:
the PCF receives a session establishment request initiated by a terminal and used for establishing a guaranteed bit rate GBR session on a network slice;
the PCF acquires first GBR limit information; wherein the first GBR restriction information includes: ensuring a slice bit rate GSBR and a maximum slice bit rate MSBR;
the PCF processes the session establishment request according to the first GBR restriction information, including:
the PCF obtains GBR total values corresponding to all first GBR flows currently on the network slice, and obtains GBR required values and maximum bit rate MBR values corresponding to second GBR flows, wherein the second GBR flows are GBR flows which need to be established and correspond to the session establishment request;
the PCF determines whether the sum of the GBR total value and the GBR demand value is less than or equal to the GSBR, and whether the MBR value is less than or equal to the MSBR; if not, the PCF refuses to establish the second GBR flow; if so, the PCF sends the session establishment request to the RAN side node.
2. The method of claim 1, the PCF obtaining first GBR restriction information comprising:
the PCF obtains the first GBR restriction information from a unified data repository UDR.
3. The method of claim 2, further comprising:
the RAN side node acquires second GBR limit information; wherein the second GBR restriction information includes: the GSBR and the MSBR;
and the RAN side node processes the session establishment request according to the second GBR limit information.
4. A method as in claim 3, further comprising:
the PCF sends the second GBR limit information to the RAN side node through an access and mobility management function AMF.
5. The method of claim 4, further comprising:
the PCF receives an AM policy control association request sent by the AMF; after receiving the registration information sent by the terminal, the AMF sends the AM policy control association request;
the PCF acquires access and mobility related policy information from the UDR; wherein the access and mobility related policy information comprises: the second GBR restriction information;
the PCF returns the access and mobility related policy information to the AMF;
the AMF sends the access and mobility related policy information to the RAN-side node.
6. The method of claim 3, the RAN-side node processing the session establishment request according to the second GBR restriction information comprising:
and if the RAN side node judges that the sum of the GBR total value and the GBR required value is larger than the GSBR and/or the MBR value is larger than the MSBR, acquiring a 5G service quality identifier (5 QI) based on the session establishment request, and processing the session establishment request according to the 5 QI.
7. The method of claim 1, the PCF receiving a terminal initiated session set-up request for setting up a guaranteed bit rate GBR session on a network slice comprising:
the terminal sends the session establishment request to an AMF for establishing the GBR session on the network slice;
the PCF receives the session establishment request sent by the AMF.
8. A policy control function device, comprising:
a session request receiving module, configured to receive a session establishment request initiated by a terminal and used for establishing a guaranteed bit rate GBR session on a network slice;
the limit information acquisition module is used for acquiring first GBR limit information; wherein the first GBR restriction information includes: ensuring a slice bit rate GSBR and a maximum slice bit rate MSBR;
a session request processing module, configured to process the session establishment request according to the first GBR restriction information;
the session request processing module comprises:
an information obtaining unit, configured to obtain GBR total values corresponding to all first GBR flows currently on the network slice; acquiring a GBR requirement value and a maximum bit rate MBR value corresponding to a second GBR flow, wherein the second GBR flow is a GBR flow which is required to be established and corresponds to the session establishment request;
a processing unit configured to determine whether a sum of the GBR total value and the GBR demand value is less than or equal to the GSBR, and whether the MBR value is less than or equal to the MSBR; if not, refusing to establish the second GBR flow; if yes, the session establishment request is sent to the RAN side node.
9. The apparatus of claim 8, wherein,
the restriction information acquisition module is used for acquiring the first GBR restriction information from a unified data database (UDR).
10. The apparatus of claim 8, wherein,
the RAN side node obtains second GBR limit information, wherein the second GBR limit information comprises: the GSBR and the MSBR; and the RAN side node processes the session establishment request according to the second GBR limit information.
11. The apparatus of claim 10, further comprising:
and the policy information processing module is used for sending the second GBR limit information to the RAN side node through an access and mobility management function (AMF).
12. The apparatus of claim 11, wherein,
the policy information processing module is used for receiving an AM policy control association request sent by the AMF; after receiving the registration information sent by the terminal, the AMF sends the AM policy control association request; obtaining access and mobility related policy information from the UDR, the access and mobility related policy information comprising: the second GBR restriction information; and returning the access and mobility related policy information to the AMF so that the AMF sends the access and mobility related policy information to the RAN side node.
13. The apparatus of claim 10, wherein,
and if the RAN side node judges that the sum of the GBR total value and the GBR required value is larger than the GSBR and/or the MBR value is larger than the MSBR, acquiring a 5G service quality identifier (5 QI) based on the session establishment request, and processing the session establishment request according to the 5 QI.
14. The apparatus of claim 8, wherein the terminal sends the session establishment request to an AMF for establishing the GBR session on the network slice;
the session request receiving module is configured to receive the session establishment request sent by the AMF.
15. A policy control function device, comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 1-7 based on instructions stored in the memory.
16. A guaranteed bit rate data transmission control system comprising:
PCF, AMF, and RAN side node; the PCF is configured to perform the method of any one of claims 1 to 7.
17. A computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of any of claims 1 to 7.
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