Data traffic monitoring method, SMF network element, PSA network element and readable storage medium

A technology of data traffic and network elements, applied in the field of 5G communication, can solve the problem of not describing the cumulative statistics of multiple UPF usage, and achieve the effect of accurately monitoring data traffic

Pending Publication Date: 2022-01-14

ZTE CORP

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AI-Extracted Technical Summary

Problems solved by technology

Since the data traffic exchange process of the user terminal includes not only the UL CL UPF but also several UPFs such as the U...

Method used

A kind of data flow monitoring method that the embodiment of the present invention provides, by distinguishing the method that data traffic uplink and downlink carry out data flow consumption monitoring to multi-UPF, more accurate statistic user flow, also guarantee each operation better at the same time The interests of operators have improved the core competitiveness of operators in the deployment of 5G networks.

[0043] In some embodiments, the session management network element SMF sends the same usage report rule URR to the ULCL UPF of the same PDU session, as well as the first PSA and the second PSA. Multiple UPFs of the sam...

Abstract

According to the data traffic monitoring method, the SMF network element, the PSA network element and the readable storage medium provided by the embodiment of the invention, a session management network element SMF receives a traffic monitoring instance issued by a charging control policy network element PCF, and converts the traffic monitoring instance into a traffic report rule URR; the session management network element SMF issues a traffic report rule URR to an ULCL UPF, and at least two UPF anchor points, namely, a first PSA and a second PSA under the ULCL UPF, and the ULCL UPF is one ULCL UPF inserted by the session management network element SMF in a data message transmission path of a created PDU session; and the session management network element SMF determines the traffic amount according to the traffic statistical results reported by the ULCL UPF and the first PSA and the second PSA of the at least two UPF anchor points, and sends the traffic amount to a charging control policy network element PCF. In some implementation processes, the session management network element (SMF) can send a traffic report rule (URR) to a plurality of UPFs, and the traffic amount is determined according to a traffic statistical result returned by the plurality of UPFs, so that the data traffic can be monitored more accurately.

Application Domain

Metering/charging/biilling arrangementsAccounting/billing services

Technology Topic

Network elementSession management +6

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Examples

Experimental program(6)

Example Embodiment

[0032] Example 1:

[0033] Solving the current 5G network architecture without providing a method of data traffic statistics involving multiple UPF anchor PSAs. The embodiment of the present invention provides a data flow monitoring method, including: session management network element SMF receives the amount monitoring example issued by the charging control policy network element PCF, and converts the amount of monitoring instance into the usage report rule URR; session management The NE SMF issues the Dosage Rule URR to the ULCL UPF, and at least two UPF anchor points under ULCL UPF, the first PSA and the second PSA, ULCL UPF for session management network elements SMF data reported in the created PDU session A ULCL UPF inserted in the transmission path; session management network element SMF, determines traffic usage according to the traffic statistics reported by the ULCL UPF and at least two UPF anchor points, and transmitted to the charging control policy network Yuan PCF.

[0034] See figure 2 , figure 2 A flow chart of a data flow monitoring method provided in this embodiment. figure 2 The data traffic monitoring method is based on the existing PDU session, the flow steps of data traffic monitoring methods include:

[0035] Step S201, the SMF receives the amount of monitoring monitoring of PCF.

[0036] Step S202, SMF converts the received amount monitoring instance into a dosage report rule URR.

[0037] Step S203, SMF transmits the amount reporting rule URR to ULCl, first PSA, and second PSA.

[0038] Step S204, the SMF receives the traffic statistics of the ULCl, the first PSA, and the second PSA returned.

[0039] Step S205, the SMF determines the amount of traffic according to the returned traffic statistics.

[0040]Step S206, SMF transmits the flow rate to the PCF.

[0041] In some facts, the session management network element SMF receives the usage monitoring instance from the billing control policy network element PCF, including: Detection whether there is a new user terminal access 5G network, for time, session management network element SMF Create a PDU session for the new user terminal. Since the embodiment of the present invention is to give a PDU session protocol in a 5G network, the session management network element SMF needs to determine if there is an accessed user terminal, and when the new user terminal is connected, the user terminal establishes PDU. Session.

[0042] In some embodiments, the amount of the amount monitoring includes: Monitoring Key and dosage Monitor threshold threshold thresholds; Dosage Report Rules URR includes: reporting traffic thresholds and URRIDs that report data traffic monitoring. Monitoring Key is a monitor key, a usage monitoring instance corresponds to a monitoring key; the amount of considers monitoring the threshold threshold threshold for triggering the session management network element SMF, and automatically subscribes to traffic statistics when the statistical flow on the SMF reaches the threshold threshold; The flow threshold is a threshold that triggers the UPF report. When the statistical flow on the UPF reaches the flow threshold, the traffic statistic is automatically on the traffic statistics; the URRID is the URR ID for identifying the URR.

[0043] In some embodiments, the session management network element SMF is the same as the ULCL UPF of the same PDU session, and the amount reporting rule URR transmitted by the first PSA and the second PSA. Multiple UPFs with the same PDU session use the same amount reporting rule URR, which can reduce the processing difficulty of the session management network element SMF, and can be easier to identify whether multiple UPFs are the same group.

[0044] In some embodiments, the conversation management network element SMF determines that the flow rate amount is determined by the flow rate statistical result reported by the ULCL UPF and at least two UPF anchor points, including: the downstream traffic statistics in the traffic statistics result of the ULCL UPF As a result, the downstream flow is used; the upstream traffic statistics result of the ULCL UPF is received, and the query instruction to the first PSA and the second PSA, obtain the first PSA and the second PSA upstream traffic statistics, and the first PSA and the first The sum of the upstream flow statistics results of the second PSA, compared to the upstream current statistics results of ULCL UPF, resulting in the amount of traffic.

[0045] Since the user terminal access 5G network, all downstream traffic is sent to the ULCL UPF through the PSA to send to the ULCL UPF, so the statistics of the downstream traffic only need to obtain the statistics of the downstream traffic from the ULCL UPF, ie when ULCL In the flow rate statistics of the UPF reach the flow threshold, the downstream traffic statistics result is obtained in the flow rate of SMF, that is, the downstream flow rate.

[0046] The upstream traffic is from the user terminal to the ULCL UPF to the PSA. Due to many PSAs, there is also a packet loss in the forwarding process, and the traffic required to monitor the upstream needs to be used simultaneously to get ULCL UPF and PSA traffic. statistical results. At the same time, since the URCL UPF and PSA received the same URR, the traffic threshold is the same, the statistical result of ULCLUPF will first reach the trigger value, and report the traffic statistics. At this time, the traffic statistics result of the PSA will require session management network elements. SMF actively inquiry, send a query instruction.

[0047] In some embodiments, when the upstream traffic statistics of the ULCL UPF is less than or equal to the sum of the upstream flow rate of the first PSA and the second PSA, the upstream traffic statistics result of the ULCL UPF is the amount of uplink traffic. When the upstream traffic statistics result of ULCL UPF is less than or equal to the sum of the upstream traffic delivery statistics of the first PSA and the second PSA, that is, the first PSA and the second PSA are not packetified during forwarding, so ULCL UPF The upstream flow statistics is equal to or equal to the sum of the upstream flow usage statistics of the first PSA and the second PSA.

[0048] In some embodiments, when the upstream flow rate of the ULCL UPF is greater than the sum of the upstream flow rate of the first PSA and the second PSA, the sum of the uplink flow rate is subtracted from the sum of the first PSA and the second PSA. The remaining threshold thresholds; updated the remaining threshold threshold threshold to the usage report rule URR to obtain the remaining amount reporting rules, and will be sent to ULCLUPF, and the first PSA and the second PSA. When the upstream traffic statistics of the ULCL UPF is greater than the sum of the first PSA and the second PSA's upstream flow, that is, the first PSA and the second PSA have a lost package during forwarding, but due to the packet There is a threshold threshold threshold threshold threshold that causes SMF to be monitored. It is not possible to report to the PCF. If the remainder is required, the remaining flow threshold is updated to the usage report rule URR, and the traffic is monitored until the threshold threshold threshold of the usage monitoring.

[0049] A data flow monitoring method provided by the embodiment of the present invention, receives the amount monitoring example from the charging control policy network element PCF through the session management network element SMF, and converts the dosage monitoring instance into the dosage report rule URR; session management network The dollar SMF issues the ULCL UPF under the ULCL UPF, and the first PSA and the second PSA under the ULCL UPF, and the second PSA, ULCL UPF is the data packet created by the session management network element SMF in the created PDU session. A ULCL UPF inserted in the transmission path; session management network element SMF, determines traffic consumption according to the traffic statistics reported by the ULCL UPF and at least two UPF anchor points first PSA and the second PSA, and transmitted to the charging control policy network element PCF. During some implementation, session management network element SMF can be implemented to multiple UPF transmission Dosage Rule URR, and the flow rate is determined by traffic statistics returned by multiple UPFs, and data traffic can be more accurately monitored.

Example Embodiment

[0050] Example 2:

[0051] This embodiment provides a data flow monitoring method, which is applied to a 5G communication system, which includes: the PSA receiving session management network element SMF transmitted by the UPF anchor, and reporting a rule URR according to the Dix Quantity Report Rule URR Statistically upstream traffic; when the session management network element SMF is received, the upstream traffic statistic is sent to the session management network element SMF.

[0052] In some embodiments, the PSA comprises at least a first PSA and a second PSA. PSA is connected to the ULCL UPF, after the user terminal access 5G network, after the PDU session is established, the user terminal is connected to the ULCL UPF, and the ULCL UPF is sent back and received by PSA, so PSA connected to the ULCL UPF usually includes At least two or more.

[0053] In some embodiments, the amount reporting rule URR includes: reporting the flow rate threshold and URRID of the data traffic monitoring; the first PSA and the second PSA received usage report rule URR are the same. With the same amount of reporting rules URR, it can reduce the processing difficulty of the session management network element SMF, and it can be easier to identify whether multiple UPFs are the same group.

[0054] This implementation provides a data flow monitoring method, including: PSA receiving session management network element SMF transmitted by the UPF anchor point report rule URR, and statistics on the quantity report rule URR; received session management network element SMF send query When the command, the upstream traffic statistic is sent to the session management network element SMF. The delivery management network element SMF sent by the SMF transmitted to the UPF anchor PSA, which typically has multiple, realizing the monitoring of multiple PSA traffic, and obtains the uplink traffic statistics from multiple PSAs for traffic for traffic The determination of the amount can further improve the accuracy of data traffic monitoring.

Example Embodiment

[0055] Example 3:

[0056] This embodiment provides a data flow monitoring method, which includes the following steps:

[0057] Step S1, the billing control policy network element PCF issues a dosage monitoring instance applies to business data traffic on the PDU session created by the end user. The PSA managed by the PDU session may not only one, in order to accurately count the user's data traffic, the session management network element SMF needs to convert the dosage monitoring instance into the URR to ULCLUPF and the anchor UPF PSA1 and PSA2. Different UPF receipt of the URR monitored Monitor contains traffic thresholds and a URRID for user data traffic monitoring. URRID as an identification ID of a URR, the URRID on different UPFs can be different, no limits.

[0058] Step S2, the data packet of the user terminal is distinguished, and the downlink data packet is forwarded to the end user, which is gathered on the ULCL UPF, whether the message is discarded or forwarding the ULCL UPF itself can be clearly known, so this The flow statistics of the downlink packets may not be accurately statistically via the ULCL through the PSA.

[0059] Step S3, for the uplink data packets, it needs to be forwarded to PSA1 or PSA2 after passing by ULCL UPF, and finally, only PSA knows that if the uplink traffic is discarded on the PSA, ULCL UPF can't know, so upstream traffic statistics are placed in ULCL It is not accurate on the UPF, and the design of the present invention needs to be completed by SMF, PSA, and ULCL UPF. The flow of each URR is statistically on PSA1 and PSA2. The data traffic on the ULCL UPF reaches the URR threshold threshold to report the traffic accuracy of SMF, SMF judgment and management reporting URR:

[0060] Steps S31, PSA1, and PSA2 have no packet packet, that is, the uplink data traffic of the corresponding URR on the ULCL UPF is equal to or smaller than the PSA1 corresponding URR uplink data traffic plus the sum of the PSA2 corresponding URR uplink data traffic. When the data traffic of the ULCL UPF reaches the threshold threshold threshold threshold threshold threshold of the issued URR, the URR is reported to the SMF, the URR reported in the report contains the uplink flow, downlink traffic, and the total traffic, and the SMF receives the traffic to PSA1 and PSA2 to query the flow rate of the URR Statistics, the upstream traffic on the queried PSA1 and PSA2 is summarized and the upstream traffic reported by the ULCL UPF is discovered that the uplink data statistics flow of the corresponding URR on the ULCL UPF is equal to or less than the PSA1 corresponding URR uplink data traffic plus PSA2. The sum of the uplink data traffic of the corresponding URR is reported to the PCF on the amount of ULCL UPF.

[0061]Steps S32, PSA1 or PSA2 have packet loss, that is, the uplink data traffic of the corresponding URR on the ULCL UPF is greater than the PSA1 corresponding URR uplink data traffic plus the sum of the PSA2 corresponding URR uplink data traffic. When the data traffic of ULCL UPF reaches URCl UPF's URR threshold threshold, ULCL UPF will report URR to SMF, and the URR reported in the report contains uplink flow, downlink traffic, and total traffic, SMF is received to PSA1 and PSA2 query corresponding URR traffic Statistics, the upstream traffic on the queried PSA1 and PSA2 is summarized and the upstream traffic reported by the ULCL UPF is configured. It is found that the uplink data traffic of the corresponding URR on the ULCL UPF is greater than the uplink data traffic of the PSA1 corresponding URR plus PSA2 corresponds to the URR The sum of the uplink data traffic. This is the case where the actual statistics on the actual statistics on PSA1 and PSA2 have not yet reached the threshold threshold threshold threshold of the issued URR. SMF will cache the sum of the current data traffic of the currently statistical PSA1 and PSA2, and calculate the remaining traffic that needs to continue monitoring. Updated to the threshold threshold threshold threshold for the URR and re-issued ULCL UPF, PSA1, and PSA2.

[0062] Step S321, ULCL UPF, PSA1, and PSA2 re-perform data traffic monitoring statistics based on the updated URR. The statistical method continues according to steps S31 and Step S32.

[0063] A data flow monitoring method provided by the embodiment of the present invention, by distinguishing data traffic, multi-UPF, multi-UPF, more accurately statistics, more accurately, and better protects the interests of each operator. Improve the core competitiveness of operators in 5G network deployment.

PUM

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