CN117528632A - System for analyzing and processing network congestion of NWDAF to 5GC user under meta-universe scene - Google Patents
System for analyzing and processing network congestion of NWDAF to 5GC user under meta-universe scene Download PDFInfo
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- 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]
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Abstract
The invention discloses a system for analyzing and processing network congestion of an NWDAF to a 5GC user in a meta-universe scene, which comprises UE, an application network element and the 5GC; when the UE is online, the 5GC collects an access address and a domain name of the UE; and if the 5GC judges that the access address and the domain name of the UE are mutually matched, judging that the UE is an access third party software provider, and initiating policy rule modification of the UE to the application network element so as to heighten the priority of uplink and downlink data transmission of the UE, thereby improving the bandwidth and the data transmission rate of the UE. Compared with the prior art, the method and the device can enable the 5GC to conduct differentiated processing on the specific user requested by the third party service provider during network blocking under NWDAF analysis, and ensure that the influence of the specific user on the trial of the third party service is less.
Description
Technical Field
The invention relates to the field of communication, in particular to an NWDAF (network congestion analysis and treatment) for 5GC (gas-cooled generator) user network congestion.
Background
Metauniverse (Metaverse), which is a digital living space constructed by human beings using digital technology, is a virtual world mapped or surpassed by the real world and can interact with the real world, and is provided with a novel social system. Technologies such as 5G, cloud computing, artificial intelligence, virtual reality, blockchain, digital currency, internet of things, man-machine interaction and the like are integrated in the meta universe.
For the 5G technology, as the application scene of the 5GC is wider and wider, the characteristics of large bandwidth, low time delay, high reliability, wide connection and the like of the 5GC can provide enough technical support for the virtual world. The metauniverse has the four characteristics of virtual and real fusion, on-demand access, safety and reliability and far and near integration, and the ultra-large bandwidth and ultra-high reliability communication mode of the 5GC is required to support. The mobile metauniverse may have the potential to reach its limit in a location-dependent service experience where a large amount of resource-intensive communication is required to support each user's uplink sensor data and downlink media. In crowded environments, a user may wish to experience augmented reality in a local environment.
The 3GPP is designed to introduce AI (artificial intelligence) into the 5G network, and a NF (Network Function) is added: NWDAF (Network Data Analytics Function, network data analysis function). The NWDAF working mechanism collects data of specific NF, then performs data analysis, and provides data analysis results to other NF, so that other NF can make more reasonable decisions according to the data analysis results, more accurate on-demand service and changed network resource utilization efficiency can be realized, or the data analysis results can be provided for application outside the core network, and data basis can be provided for enterprise decisions.
According to the current TS 29520-g10 protocol, the specific working mode of the NWDAF is to collect original data through NF, AF, OAM subscription and data notification, each time NF, AF, OAM collects network data subscribed by the NWDAD, the NWDAF notifies the NWDAD of corresponding data, the NWDAF performs intelligent analysis on the original data, and notifies the subscribed NF, AF, OAM, NF, AF, OAM of the analysis result, and the information is considered when deciding.
However, existing 5G systems cannot differentiate between particular users that support third party service providers requesting use of third party services during network congestion, thereby making network congestion control mechanisms more influential on the services of certain users and less influential on the services of other users.
Therefore, there is an urgent need for a 5GC user network congestion analysis processing system that can solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a system for analyzing and processing network congestion of a 5GC user by NWDAF under a meta-universe scene, which can enable the 5GC to conduct differentiated processing on a specific user which uses a third party service provider to request during network congestion under the analysis of the NWDAF, and ensure that the influence of the specific user on the trial of the third party service is less.
In order to achieve the above purpose, the invention discloses a system for analyzing and processing network congestion of an NWDAF to a 5GC user in a meta-universe scene, which comprises UE, an application network element and the 5GC; when the UE is online, the 5GC collects an access address and a domain name of the UE; and the 5GC judges that the access address and the domain name of the UE are mutually matched, judges that the UE is an access third party software provider, and initiates policy rule change of the UE to the application network element so as to increase the priority of uplink and downlink data transmission of the UE, thereby improving the bandwidth and the data transmission rate of the UE.
Compared with the prior art, the method and the system have the advantages that the 5GC can collect the access address and the domain name of the UE in real time, judge whether the access address and the domain name of the UE are matched, analyze the UE to access the third party software provider when the access address and the domain name of the UE are matched, and accordingly improve the priority of the UE when the strategy control rule change is initiated, ensure that the bandwidth and the data transmission rate of any UE are kept at a better level when the UE accesses the third party software provider, enable the 5GC to conduct differentiated processing on a specific user requested by the third party service provider during network blocking under NWAF analysis, and ensure that the influence is less when the specific user tries the third party service.
Preferably, the application network element comprises an NF network element, an OAM network element and/or an AF network element.
Preferably, the 5GC includes an NWDAF network element, and the NWDAF network element collects access addresses and domain names of the UEs to an application network element through a DPI system. The invention can obtain the access IP and domain name information of each UE from the DPI system and provide the access IP and domain name information for the NWDAF, so that the data which can be analyzed by the NWDAF is not only limited to the acquired information, the analysis of the NWDAF can be more comprehensive, and the NWDAF can provide more transparent data for analysis. When IP (InternetProtocol) data packets, TCP or UDP data flows pass through a bandwidth management system based on DPI technology, the system deeply reads the content of an IP packet payload to reorganize application layer information in a 0SI seven-layer protocol, thereby obtaining the content of the whole application program, and then shaping the traffic according to a management policy defined by the system.
Preferably, the 5GC further initiates subscription policy information to the application network element before collecting the access address and domain name of the UE, so as to obtain user information and subscription policy information of the UE.
Specifically, when the UE is online, the 5GC initiates subscription policy information to an application network element to collect an access address and a domain name of the UE specifically includes: the UE sends an online request to the application network element, and the application network element responds to the online request; the NWDAF network element initiates subscription policy information of each UE to the application network element; the application network element replies user information and subscription policy information of each UE to the NWDAF network element; the NWDAF network element initiates access addresses and domain name collection requests of all the UE to the application network element through the DPI network element; the application network element replies the access address and the domain name of each UE to the DPI network element; and the DPI network element sends the access address and the domain name of each UE to the NWDAF network element so that the NWDAF network element obtains the access address and the domain name of each UE.
Preferably, the 5GC adjusts the priority of the UE uplink and downlink data transmission to a preset level when the UE accesses a third-party software provider, so that the UE bandwidth and the data transmission rate are adjusted to preset rate values, and does not adjust the priority of the UE uplink and downlink data transmission when the UE does not access the third-party software provider. Of course, the priority of the system can be increased by a preset level by setting a corresponding strategy according to actual needs.
Preferably, after the UE is online, the 5GC further monitors the service quality of the service data stream of the UE, and switches the anchor point of the service data stream with low priority to the secondary base station according to the priority of the UE when the service quality of the UE at the primary base station side is not good.
Specifically, the 5GC monitoring the service quality of the service data flow of the UE includes: 5GC transmits Qos monitoring strategy to the main base station for monitoring the quality of the service data flow of the UE; after the PDU session is established, the main base station detects the quality of the service data flow of the UE and reports the monitoring data of Qos monitoring to the 5 GC.
Specifically, the step of 5GC for judging that the service quality of the UE at the primary base station side is poor includes: the 5GC obtains the actual transmission delay of the service data flow according to the monitoring data; judging whether the actual transmission delay is larger than a preset downlink transmission delay or not, and counting the times n of the actual transmission delay being larger than or equal to the preset downlink transmission delay; when the number of times n in the unit detection time t is greater than a threshold value m, the service quality of the UE at the main base station side is judged to be poor, and m is an integer greater than or equal to 1.
Specifically, the step of determining whether the actual transmission delay is greater than a preset downlink transmission delay, and counting the number n of times that the actual transmission delay is greater than or equal to the preset downlink transmission delay includes: judging whether the actual transmission delay is larger than a preset downlink transmission delay or not, and if the actual transmission delay is larger than the preset timeout difference, counting that the actual transmission delay is larger than or equal to the preset downlink transmission delay once.
Drawings
Fig. 1 is a block diagram of an NWDAF-to-5 GC user network congestion analysis processing system in a meta-universe scenario of the present invention.
Fig. 2 is a flowchart of the NWDAF-to-5 GC user network congestion analysis processing system in the meta-universe scenario of the present invention.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present invention in detail, the following description is made in connection with the embodiments and the accompanying drawings.
Referring to fig. 1 and 2, the invention discloses a system for analyzing and processing network congestion of an NWDAF to a 5GC user in a meta-universe scene, which comprises UE, an application network element and a 5GC; when the UE is online, the 5GC collects the access address and domain name of the UE (refer to step S11 in fig. 2); the 5GC determines whether the access address and the domain name of the UE are matched (refer to step S12 in fig. 2), if yes, determines that the UE is an access third party software provider, and initiates policy rule modification of the UE to the application network element, so as to raise the priority of uplink and downlink data transmission of the UE, thereby improving the bandwidth and data transmission rate of the UE (refer to step S13 in fig. 2).
The application network element comprises an NF network element, an OAM network element and/or an AF network element.
Referring to fig. 1, the 5GC includes an NWDAF network element, and the NWDAF network element collects access addresses and domain names of UEs to an application network element through a DPI system.
And the 5GC initiates subscription policy information to the application network element before collecting the access address and the domain name of the UE so as to obtain the user information and the subscription policy information of the UE.
Specifically, referring to fig. 1, a method for processing a 5GC user network congestion analysis processing system by NWDAF in a meta-universe scene of the present invention will be described:
1. and when the UE is online, the UE sends an online request to the application network element.
2. And the application network element responds to the online request.
3. And the NWDAF network element initiates a request of subscription policy information of each UE to the application network element.
4. And the application network element replies the user information and the subscription policy information of each UE to the NWDAF network element.
Wherein, the user information and the subscription policy information are shown in the following table 1:
TABLE 1
Referring to table 1 above, the subscriber information is IMSI, the subscription policy information includes priority, uplink AMBR (bps) and downlink AMBR (bps), the uplink AMBR and the downlink AMBR mainly refer to the wideband size used by the UE to generate the service, and the wideband size can directly affect the peak value of the rate at which the UE generates the service, so the bandwidth and the data transmission rate of the present invention include uplink AMBR and downlink AMBR.
5. And the NWDAF network element initiates access addresses and domain name collection requests of all the UE to the application network element through the DPI network element.
6. And the application network element replies the access address and the domain name of each UE to the DPI network element.
Wherein the access address and domain name information of each UE are shown in table 2 below.
TABLE 2
7. And the DPI network element sends the access address and the domain name of each UE to the NWDAF network element so that the NWDAF network element obtains the access address and the domain name of each UE.
9. And the 5GC judges whether the access address and the domain name of the UE are matched, if yes, step 10 is carried out, the policy rule change of the UE is initiated (the policy adjustment service request is initiated), and if not, the policy rule change is not carried out on the UE, that is, in the sent policy rule change of the UE, the priority of the UE with the matched access address and domain name is increased, and the priority of the UE with the unmatched access address and domain name is not modified.
10. The 5GC initiates a policy adjustment service request to an application network element to require modification of policy rules of the UE.
11. And the application network element completes policy adjustment service for the UE so as to increase the priority of uplink and downlink data transmission of the UE and improve the bandwidth and the data transmission rate of the UE.
12. And responding to the policy adjustment to the 5GC after completing the policy adjustment service.
13. And the application network element controls the bandwidth and the data transmission rate of the UE service access according to the new priority.
Preferably, in the modification of the UE policy rule sent in step 9, the priority of the UE with the access address and the domain name matching is adjusted to a preset high priority, and the priority of the UE with the access address and the domain name not matching is adjusted to an initial preset priority. The high priority is ranked higher than the initially preset priority.
And when the UE accesses a third party software provider, the 5GC adjusts the priority of uplink and downlink data transmission of the UE to a preset level, so that the bandwidth and the data transmission rate of the UE are adjusted to preset rate values.
For example, assuming that the UE (IMSI is 460001234560015), the IP of the third party software provider is 10.10.10.15, the domain name is www.15.com, when the DPI reports 10.10.10.15 and www.15.com accessed by 460001234560015 to the NWDAF, the NWDAF is analyzed, and only the 460001234560015 accesses the third party software provider, the NWDAF does not initiate policy control rules for other UEs, and only policy control change is performed for 460001234560015 (uplink and downlink AMBR is changed to 10Gbps, and priority is changed to 9). Then the UE with IMSI 460001234560015 accesses the third party software provider with priority to ensure that its own access is not affected by network congestion.
Preferably, after the UE is online, the 5GC further monitors the service quality of the service data stream of the UE, and switches the anchor point of the service data stream with low priority to the secondary base station according to the priority of the UE when the service quality of the UE at the primary base station side is not good.
Wherein, the monitoring the service quality of the service data flow of the UE by the 5GC comprises: 5GC transmits Qos monitoring strategy to the main base station for monitoring the quality of the service data flow of the UE; after the PDU session is established, the main base station detects the quality of the service data flow of the UE and reports the monitoring data of Qos monitoring to the 5 GC.
Specifically, the step of 5GC for judging that the service quality of the UE at the primary base station side is poor includes: the 5GC obtains the actual transmission delay of the service data flow according to the monitoring data; judging whether the actual transmission delay is larger than a preset downlink transmission delay or not, and counting the times n of the actual transmission delay being larger than or equal to the preset downlink transmission delay; when the number of times n in the unit detection time t is greater than a threshold value m, the service quality of the UE at the main base station side is judged to be poor, and m is an integer greater than or equal to 1.
Specifically, the step of determining whether the actual transmission delay is greater than a preset downlink transmission delay, and counting the number n of times that the actual transmission delay is greater than or equal to the preset downlink transmission delay includes: judging whether the actual transmission delay is larger than a preset downlink transmission delay or not, and if the actual transmission delay is larger than the preset timeout difference, counting that the actual transmission delay is larger than or equal to the preset downlink transmission delay once.
Referring to table 3, a downlink transmission delay preset in the main reference and the auxiliary reference is used for the service data stream. For the service data flow a, the preset downlink transmission delay of the main base station is 30ms, the preset downlink transmission delay of the auxiliary base station is 30ms, the frequency of the actual transmission delay being greater than the preset transmission delay is 1 (m=1 in the embodiment), and the timeout difference is 20ms. For the service data flow B, the downlink transmission delay of the preset main base station is 100ms, the downlink transmission delay of the auxiliary base station is 100ms, the frequency of the actual transmission delay being greater than the preset transmission delay is 1 (m=1 in the embodiment), and the timeout difference is 50ms.
| Downlink transmission delay (main)/ms | Downlink transmission delay (auxiliary)/ms | Frequency of time-out | Time out difference/ms | Service data flow |
| 30 | 30 | 1 | 20 | A |
| 100 | 100 | 1 | 50 | B |
TABLE 3 Table 3
Referring to the following table 4, the number 1 is a Qos monitoring result of the service data flow a, where the actual transmission delay of the primary base station is 60ms, which is already greater than the preset downlink transmission delay of the primary base station (60 ms > 30 ms) and the difference value of 30ms (60 ms-30 ms) is greater than the preset difference value of 20ms. And transmitting the service data flow A through the auxiliary base station, wherein the actual transmission delay of the auxiliary base station is 10ms, so that the transmission requirement of the service data flow A is met, the service quality of the service data flow A at the main base station side is judged to be poor, and the downlink data anchor point of the service data flow A is switched to the auxiliary base station. The number 2 is a Qos monitoring result of the service data flow B, wherein the downlink transmission delay of the main base station is 160ms, which is larger than the preset downlink transmission delay of the main base station (160 ms is more than 100 ms), and the difference value 60ms (160 ms-100 ms) is larger than the preset difference value 50ms; and transmitting the service data flow B through the auxiliary base station, wherein the downlink transmission delay of the auxiliary base station is 20ms, so that the transmission requirement of the service data flow B is met, the service quality of the service data flow B at the main base station side is judged to be poor, and the downlink data anchor point of the service data flow B is switched to the auxiliary base station. In this embodiment, the numbers of the service data flows are ordered according to the priority.
| Numbering device | Downlink transmission delay (main)/ms | Downlink transmission delay (auxiliary)/ms | Service data flow |
| 1 | 60 | 10 | A |
| 2 | 160 | 20 | B |
| ... | ... | ... | ... |
TABLE 4 Table 4
NF, network Function-Network Function. NWDAF, network Data AnalyticsFunction-network data analysis function. OAM, operation Administration andMaintenance-operations, administration and maintenance. AF, application Function-network application function. AI, artificial Intelligence-artificial intelligence. ML, machine Learning-Machine Learning. SLA, service Level Agreement service level agreement.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the claims, which follow, as defined in the claims.
Claims (10)
1. The system for analyzing and processing the network congestion of the NWDAF to the 5GC user under the meta-universe scene is characterized in that: the method comprises the steps of UE, application network elements and 5GC;
when the UE is online, the 5GC collects an access address and a domain name of the UE;
and the 5GC judges whether the access address of the UE is matched with the domain name, if so, judges that the UE is an access third party software provider, and initiates policy rule change of the UE to the application network element so as to increase the priority of uplink and downlink data transmission of the UE, thereby improving the bandwidth and the data transmission rate of the UE.
2. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-universe scene as in claim 1, wherein: the application network element comprises an NF network element, an OAM network element and/or an AF network element.
3. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-universe scene as in claim 1, wherein: the 5GC comprises an NWDAF network element, and the NWDAF network element collects access addresses and domain names of all the UE to an application network element through a DPI system.
4. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-universe scene as in claim 1, wherein: the 5GC initiates subscription policy information to the application network element before collecting the access address and domain name of the UE so as to obtain the user information and the subscription policy information of the UE.
5. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-space scene as in claim 4, wherein:
when the UE is online, the 5GC initiates subscription policy information to an application network element to collect the access address and domain name of the UE, and the method specifically comprises the following steps:
the UE sends an online request to the application network element, and the application network element responds to the online request;
the NWDAF network element initiates subscription policy information of each UE to the application network element;
the application network element replies user information and subscription policy information of each UE to the NWDAF network element;
the NWDAF network element initiates access addresses and domain name collection requests of all the UE to the application network element through the DPI network element;
the application network element replies the access address and the domain name of each UE to the DPI network element;
and the DPI network element sends the access address and the domain name of each UE to the NWDAF network element so that the NWDAF network element obtains the access address and the domain name of each UE.
6. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-universe scene as in claim 1, wherein: and when the UE accesses a third-party software provider, the 5GC adjusts the priority of uplink and downlink data transmission of the UE to a preset level, so that the bandwidth and the data transmission rate of the UE are adjusted to preset rate values.
7. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-universe scene as in claim 1, wherein: after the UE is online, the 5GC also monitors the service quality of the service data stream of the UE, and when the service quality of the UE at the main base station side is poor, the anchor point of the service data stream with low priority is switched to the auxiliary base station according to the priority of the UE.
8. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-universe scene as in claim 7, wherein: the 5GC monitoring the service quality of the service data stream of the UE comprises: 5GC transmits Qos monitoring strategy to the main base station for monitoring the quality of the service data flow of the UE; after the PDU session is established, the main base station detects the quality of the service data flow of the UE and reports the monitoring data of Qos monitoring to the 5 GC.
9. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-universe scene as in claim 7, wherein: the step of judging that the service quality of the UE at the main base station side is poor by the 5GC comprises the following steps: the 5GC obtains the actual transmission delay of the service data flow according to the monitoring data; judging whether the actual transmission delay is larger than a preset downlink transmission delay or not, and counting the times n of the actual transmission delay being larger than or equal to the preset downlink transmission delay; when the number of times n in the unit detection time t is greater than a threshold value m, the service quality of the UE at the main base station side is judged to be poor, and m is an integer greater than or equal to 1.
10. The system for analyzing and processing network congestion of NWDAF to 5GC users in a meta-universe scene as in claim 9, wherein: the step of judging whether the actual transmission delay is greater than a preset downlink transmission delay or not and counting the times n of the actual transmission delay being greater than or equal to the preset downlink transmission delay comprises the following steps: judging whether the actual transmission delay is larger than a preset downlink transmission delay or not, and if the actual transmission delay is larger than the preset timeout difference, counting that the actual transmission delay is larger than or equal to the preset downlink transmission delay once.
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