WO2025039172A1 - Rule generation methods and network elements - Google Patents

Abstract

The present disclosure relates to rule generation methods and network elements. The method executed by a first network element comprises: receiving a first message sent by a second network element, wherein the first message is used for indicating PDU set processing capability information; and on the basis of the first message, determining a PCC rule. Thus, the present disclosure may support determining PCC rules on the basis of PDU set processing capability information, and can ensure service continuity and improve service quality.

Description

Rule generation method, network element Technical Field

The present disclosure relates to the field of communication technology, and in particular to a rule generation method and a network element.

Background Art

Mobile media services, cloud AR (augmented reality)/VR (virtual reality) and other XR (extended reality) services, cloud games, video-based machine or drone remote control services, etc. are expected to contribute more and more traffic to 5G networks. XR services also involve multimodal data streams, which can be data input from the same device or different devices (including sensors) to describe the same service or application, and these data may be output to one or more destination device terminals. The data streams in multimodal data are often related, such as the synchronization of audio and video streams, and the synchronization of touch and vision.

Summary of the invention

The embodiments of the present disclosure provide a rule generation method and a network element for solving the problem in the related art that the capability information based on protocol data unit (PDU) set processing is not supported to determine the policy and charging control (PCC) rules.

The embodiments of the present disclosure provide a rule generation method and a network element.

According to the first aspect of an embodiment of the present disclosure, a rule generation method is proposed. The method is executed by a first network element, including: receiving a first message sent by a second network element, wherein the first message is used to indicate capability information of a protocol data unit PDU set processing; based on the first message, determining a PCC rule.

In the above embodiment, it is possible to support capability information based on PDU set processing and determine PCC rules, thereby ensuring business continuity and improving service quality.

According to a second aspect of an embodiment of the present disclosure, a rule generation method is proposed. The method is executed by a second network element, comprising: sending a first message to a first network element, wherein the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine a PCC rule.

In the above embodiment, the second network element can send the capability information of PDU set processing to the first network element, so that the first network element can determine the capability information of PDU set processing and determine the corresponding PCC rules, which can ensure business continuity and improve service quality.

According to a third aspect of an embodiment of the present disclosure, a rule generation method is proposed, which is executed by a fourth network element, including: sending a third message to a second network element, wherein the third message is used to indicate capability information of PDU set processing, the third message is used by the second network element to send a first message to a first network element, the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine a PCC rule.

In the above embodiment, the fourth network element can send the capability information of PDU set processing to the second network element, so that the second network element can determine the capability information of PDU set processing and send it to the first network element for the first network element to determine the PCC rule, which can ensure business continuity and improve service quality.

According to a fourth aspect of an embodiment of the present disclosure, a rule generation method is proposed, comprising: a fourth network element sends a third message to a second network element, wherein the third message is used to indicate capability information of PDU set processing; the second network element sends a first message to a first network element, wherein the first message is used to indicate capability information of PDU set processing; the first network element receives the first message sent by the second network element; and the first network element determines a PCC rule based on the first message.

In the above embodiment, the capability information processed based on the PDU set is supported to determine the PCC rules, which can ensure business continuity and improve service quality.

According to the fifth aspect of an embodiment of the present disclosure, a first network element is proposed, comprising: a transceiver module for receiving a first message sent by a second network element, wherein the first message is used to indicate capability information of PDUset processing; and a processing module for determining a PCC rule based on the first message.

According to a sixth aspect of an embodiment of the present disclosure, a second network element is proposed, comprising: a transceiver module, used to send a first message to a first network element, wherein the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine a PCC rule.

According to the seventh aspect of the embodiment of the present disclosure, a fourth network element is proposed, including: a transceiver module, used to send a third message to a second network element, wherein the third message is used to indicate capability information of PDU set processing, the third message is used for the second network element to send a first message to a first network element, the first message is used to indicate capability information of PDU set processing, and the first message is used for the first network element to determine PCC rules.

According to an eighth aspect of an embodiment of the present disclosure, a first network element is proposed, comprising: one or more processors; wherein the first network element is used to execute the method described in the first aspect above.

According to a ninth aspect of an embodiment of the present disclosure, a second network element is provided, comprising: one or more processors; wherein the second The network element is used to execute the method described in the second aspect above.

According to a tenth aspect of an embodiment of the present disclosure, a fourth network element is proposed, comprising: one or more processors; wherein the fourth network element is used to execute the method described in the third aspect above.

According to the eleventh aspect of an embodiment of the present disclosure, a communication system is provided, comprising a first network element, a second network element, and a fourth network element, wherein the first network element is configured to implement the method described in the first aspect, the second network element is configured to implement the method described in the second aspect, and the fourth network element is configured to implement the method described in the third aspect.

According to the twelfth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the method described in the first aspect, the second aspect or the third aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1A is an architecture diagram of a communication system provided by an embodiment of the present disclosure;

FIG1B is a schematic diagram of a 5G networking architecture provided by an embodiment of the present disclosure;

FIG2 is a flow chart of a rule generation method provided by an embodiment of the present disclosure;

FIG3A is a flow chart of another rule generation method provided by an embodiment of the present disclosure;

FIG3B is a flow chart of another rule generation method provided by an embodiment of the present disclosure;

FIG3C is a flowchart of another rule generation method provided by an embodiment of the present disclosure;

FIG4A is a flowchart of another rule generation method provided by an embodiment of the present disclosure;

FIG4B is a flowchart of another rule generation method provided by an embodiment of the present disclosure;

FIG5A is a flowchart of another rule generation method provided by an embodiment of the present disclosure;

FIG5B is a flowchart of another rule generation method provided by an embodiment of the present disclosure;

FIG6A is a flowchart of another rule generation method provided by an embodiment of the present disclosure;

FIG6B is a flowchart of another rule generation method provided by an embodiment of the present disclosure;

FIG6C is a flowchart of another rule generation method provided by an embodiment of the present disclosure;

FIG7A is a structural diagram of a first network element provided by an embodiment of the present disclosure;

FIG7B is a structural diagram of a second network element provided in an embodiment of the present disclosure;

FIG7C is a structural diagram of a fourth network element provided in an embodiment of the present disclosure;

FIG8A is a structural diagram of a communication device provided by an embodiment of the present disclosure;

FIG8B is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure.

DETAILED DESCRIPTION

The embodiments of the present disclosure provide a rule generation method and a network element.

In a first aspect, an embodiment of the present disclosure proposes a rule generation method, which is performed by a first network element, comprising: receiving a first message sent by a second network element, wherein the first message is used to indicate capability information of a protocol data unit PDU set set; determining a PCC rule based on the first message

In the above embodiment, it is possible to support capability information based on PDU set processing and determine PCC rules, thereby ensuring business continuity and improving service quality.

In combination with some embodiments of the first aspect, in some embodiments, the capability information of PDU set processing includes: the support status of PDU set processing and/or whether the support status of PDU set processing has changed.

In the above embodiment, the first network element can determine the PCC rule based on the support status of the PDU set processing or the information on whether the support status of the PDU set processing has changed.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes: the first network element sending the PCC rule to the second network element.

In the above embodiment, the first network element can send the determined PCC rules to the second network element based on the support status of PDU set processing or the information on whether the support status of PDU set processing has changed, which can ensure business continuity and improve service quality.

In combination with some embodiments of the first aspect, in some embodiments, the above method further includes: initiating a session modification process, or initiating a session management policy association modification process.

In the above embodiment, when the first network element determines the PCC rules based on the capability information processed by the PDU set, it can initiate a session modification process, or initiate a session management policy association modification process to modify the PCC rules determined by the session application.

In combination with some embodiments of the first aspect, in some embodiments, the above method also includes: the first network element sends a first subscription event notification to the second network element, wherein the first subscription event notification is used to obtain capability information of PDU set processing.

In the above embodiment, the first network element can subscribe to the event notification of the capability information processed by the PDU set so as to obtain the PDU set in time. The first network element can subscribe to the event notification of the support status of the PDU set processing, or subscribe to the event notification of the change of the PDU set support status, so as to obtain the information of the support status of the PDU set processing or the change of the PDU set support status in time.

In combination with some embodiments of the first aspect, in some embodiments, the first subscription event notification is related to a policy control request trigger.

In the above embodiment, the first network element sends a first subscription event notification to the second network element, which can serve as a policy control request trigger. When the policy control request trigger is satisfied, that is, the second network element receives the first subscription event notification, the second network element can send a first message to the first network element, thereby sending the first network element information about the support status of PDU set processing or whether the support status of PDU set processing has changed.

In combination with some embodiments of the first aspect, in some embodiments, the first network element sends a first subscription event notification to the second network element, including: sending the first subscription event notification to the second network element according to local configuration or operation management and maintenance OAM configuration.

In the above embodiment, the first network element may send the first subscription event notification to the second network element based on local configuration or OAM configuration.

In combination with some embodiments of the first aspect, in some embodiments, the above method also includes: the first network element receives a subscription request sent by the third network element, wherein the subscription request is used to request capability information of PDU set processing.

In the above embodiment, the first network element may send a first subscription event notification to the second network element based on the received subscription request sent by the third network element.

In combination with some embodiments of the first aspect, in some embodiments, the above method also includes: the first network element sends a second message to the third network element, wherein the second message is used to indicate capability information of PDU set processing.

In the above embodiment, the first network element may send information about the support status of PDU set processing or whether the support status of PDU set processing has changed to the third network element to obtain new QoS requirements or trigger AF to perform session modification.

In conjunction with some embodiments of the first aspect, in some embodiments, the PCC rule includes a first PCC rule generated by a first network element, and the first network element determines the PCC rule based on the first message, including:

determining that the first message is used to indicate support for PDU set processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate support for PDU processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate that the support status of the PDU set processing is changed from not supported to supported, and no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate that the support status of the PDU set processing is changed from supported to not supported, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

Determine that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and that no PCC rule currently exists, determine that a PCC rule is generated, and determine a first PCC rule.

In conjunction with some embodiments of the first aspect, in some embodiments, the PCC rule includes a second PCC rule updated by the first network element, and the first network element determines the PCC rule based on the first message, including:

determining that the first message is used to indicate support for PDU set processing, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate support for PDU processing, and the current PCC rule is generated based on the PDU set, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate that the support status of the PDU set processing is changed from not supported to supported, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate that the support status of the PDU set processing is changed from supported to not supported, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determine that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and the current PCC rule is generated based on the PDU set, determine to update the current PCC rule, and determine the second PCC rule.

In a second aspect, an embodiment of the present disclosure proposes a rule generation method, which is executed by a second network element, including: sending a first message to a first network element, wherein the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine a PCC rule.

In the above embodiment, the second network element can send the capability information of PDU set processing to the first network element, so that the first network element can determine the capability information of PDU set processing and determine the corresponding PCC rules, which can ensure business continuity and improve service quality.

In conjunction with some embodiments of the second aspect, in some embodiments, the capability information of PDU set processing includes: Whether the support status of and/or the support status of PDU set processing has changed.

In combination with some embodiments of the second aspect, in some embodiments, the above method also includes: the second network element receives a first subscription event notification sent by the first network element, wherein the first subscription event notification is used to obtain support status information of PDU set processing, or the first subscription event notification is used to obtain PDU set support status change information.

In combination with some embodiments of the second aspect, in some embodiments, the above method also includes: the second network element receives a third message sent by the fourth network element, wherein the third message is used to indicate capability information of PDU set processing.

In the above embodiment, the second network element can determine the support status of the PDU set processing or whether the support status of the PDU set processing has changed based on the third message sent by the fourth network element, and then send the first message to the first network element.

In combination with some embodiments of the second aspect, in some embodiments, the second network element receives a third message sent by a fourth network element, including: receiving the third message sent by the fourth network element through the access and mobility management function AMF, wherein the fourth network element is a radio access network RAN, and the second network element is a session management function SMF.

In combination with some embodiments of the second aspect, in some embodiments, the above method also includes: the second network element sends a second subscription event notification to the fourth network element, wherein the second subscription event notification is used to obtain capability information of PDU set processing.

In the above embodiment, the second network element may send a second subscription event notification to the fourth network element to obtain information about the support status of the PDU set processing or whether the support status of the PDU set processing has changed from the fourth network element.

In combination with some embodiments of the second aspect, in some embodiments, the above method also includes: the second network element initiating a session management policy creation process, or initiating a session management policy modification process.

In combination with some embodiments of the second aspect, in some embodiments, the above method also includes: the second network element receives the PCC rule sent by the first network element; and determines the quality of service QoS rule according to the PCC rule.

In combination with some embodiments of the second aspect, in some embodiments, the above method also includes: the second network element sends the QoS rule to the fourth network element.

In a third aspect, an embodiment of the present disclosure proposes a rule generation method, which is executed by a fourth network element, including: sending a third message to a second network element, wherein the third message is used to indicate capability information of PDU set processing, the third message is used by the second network element to send a first message to a first network element, the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine a PCC rule.

In the above embodiment, the fourth network element can send information about the support status of PDU set processing or whether the support status of PDU set processing has changed to the second network element, so that the second network element can determine the support status of PDU set processing or whether the support status of PDU set processing has changed, and send it to the first network element for the first network element to determine the PCC rules, which can ensure business continuity and improve service quality.

In combination with some embodiments of the third aspect, in some embodiments, the fourth network element sends a third message to the second network element, including: sending the third message to the second network element through AMF, wherein the fourth network element is RAN and the second network element is SMF.

In combination with some embodiments of the third aspect, in some embodiments, the above method also includes: the fourth network element receives a second subscription event notification sent by the second network element, wherein the second subscription event notification is used to obtain capability information of PDU set processing.

In conjunction with some embodiments of the third aspect, in some embodiments, the fourth network element sending the third message to the second network element includes: determining that a specified condition is met, and sending the third message to the second network element;

The specified conditions include at least one of the following:

A network element switching occurs, and the fourth network element is the switched network element;

PDU set processing capability changes;

Changes in PDU set processing capabilities caused by OAM configuration triggers;

Changes in PDU set processing capabilities caused by triggering busy and idle time windows;

Changes in PDU set processing capabilities caused by QoS notification control triggers;

PDU set handles state changes;

PDU set processing status changes caused by OAM configuration triggers;

PDU set processing status change caused by triggering when the time window is busy or idle;

PDU set processing state change caused by QoS notification control trigger.

In a fourth aspect, an embodiment of the present disclosure proposes a first network element, which includes at least one of a transceiver module and a processing module; wherein the first network element is used to execute an optional implementation method of the first aspect.

In a fifth aspect, an embodiment of the present disclosure proposes a second network element, which includes at least one of a transceiver module and a processing module; wherein the second network element is used to execute an optional implementation method of the second aspect.

In the sixth aspect, an embodiment of the present disclosure proposes a fourth network element, which includes at least one of a transceiver module and a processing module; wherein the fourth network element is used to execute an optional implementation method of the third aspect.

In a seventh aspect, an embodiment of the present disclosure proposes a first network element, which includes: one or more processors; wherein the first network element is used to execute an optional implementation method of the first aspect.

In an eighth aspect, an embodiment of the present disclosure proposes a second network element, which includes: one or more processors; wherein the second network element is used to execute an optional implementation method of the second aspect.

In a ninth aspect, an embodiment of the present disclosure proposes a fourth network element, which includes: one or more processors; wherein the fourth network element is used to execute an optional implementation method of the third aspect.

In the tenth aspect, an embodiment of the present disclosure proposes a communication system, which includes a first network element, a second network element, and a fourth network element, wherein the first network element is configured to implement the method described in the first aspect, the second network element is configured to implement the method described in the second aspect, and the fourth network element is configured to implement the method described in the third aspect.

In the eleventh aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first aspect, the second aspect or the third aspect.

In a twelfth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation manner of the first aspect, the second aspect or the third aspect.

In a thirteenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first aspect, the second aspect, or the third aspect.

In a fourteenth aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first aspect, the second aspect, or the third aspect.

It can be understood that the first network element, the second network element, the fourth network element, the communication system, the storage medium, the program product, the computer program, the chip or the chip system are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.

The embodiments of the present disclosure provide a rule generation method and a network element. In some embodiments, the terms rule generation method, information processing method, communication method, etc. can be interchangeable.

The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and/or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun after the article may be understood as a singular expression or a plural expression.

In the embodiments of the present disclosure, “plurality” refers to two or more.

In some embodiments, terms such as "at least one", "one or more", "a plurality of", "multiple" and the like can be used interchangeably.

In some embodiments, "at least one of A and B", "A and/or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to the situation: in some embodiments, A (execute A independently of B); in some embodiments, B (execute B independently of A); in some embodiments, select execution from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., it is similar to the above.

In some embodiments, the recording method of "A or B" may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). When there are more branches such as A, B, C, etc., the above is also similar.

The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute any restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description objects, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be imposed due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", Then the ordinal number before the "level" in "first level" and "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by ordinal numbers and can be one or more. Take "first device" as an example, where the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

In some embodiments, “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

In some embodiments, terms such as "time/frequency", "time/frequency domain", etc. refer to the time domain and/or the frequency domain.

In some embodiments, terms such as "in response to ...", "in response to determining ...", "in the case of ...", "at the time of ...", "when ...", "if ...", "if ...", etc. can be used interchangeably.

In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

In some embodiments, "network" may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

In some embodiments, the terms "access network device (AN device), "radio access network device (RAN device)", "base station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node", "access point (access point)", "transmission point (TP)", "reception point (RP)", "transmission and/or reception point (transmission/reception point, TRP)", "panel", "antenna panel (antenna panel)", "antenna array (antenna array)", "cell", "macro cell", "small cell (small cell)", "femto cell (femto cell)", "pico cell (pico cell)", "sector (sector)", "cell group (cell)", "serving cell", "carrier (carrier)", "component carrier (component carrier)", "bandwidth part (bandwidth part, BWP)" and the like can be used interchangeably.

In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client and the like can be used interchangeably.

In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by the communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the terminal.

In some embodiments, the acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

In some embodiments, data, information, etc. may be obtained with the user's consent.

In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, or any columns may also be implemented as an independent embodiment.

FIG1A is an architecture diagram of a communication system provided by an embodiment of the present disclosure.

As shown in FIG. 1A , a communication system 100 includes a terminal 101 and a network device 102 .

In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with a communication function, a smart car, a tablet computer, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, and a wireless terminal device in industrial control. At least one of wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, and wireless terminal devices in smart homes, but not limited to these.

In some embodiments, the network device 102 may include at least one of an access network element (or, referred to as access network equipment (radio access network, RAN)) and a core network element (or, referred to as core network equipment).

In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a baseband unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

In some embodiments, the core network device may be a device including the first network element 1031, the second network element 1032, etc., or may be a plurality of devices or a group of devices including all or part of the first network element 1031, the second network element 1032, etc. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

In some embodiments, the second network element is, for example, a policy control function (PCF).

In some embodiments, the second network element is, for example, a session management function (SMF).

In some embodiments, the third network element is, for example, an application function (AF).

In some embodiments, the fourth network element is, for example, a user plane function (UPF).

In some embodiments, the first network element supports providing a unified policy framework to control network behavior, provides policy rules to the control layer network function, and is responsible for obtaining user subscription information related to policy decisions.

In some embodiments, the second network element is used to perform packet data unit (PDU) session management for the terminal, execution of PCF control policy, selection of user plane function (UPF) network element, allocation of IP address of the terminal device when the PDU type is Internet Protocol (IP) type, etc.

In some embodiments, the fourth network element is used to implement policy control functions such as session and service flow level billing, QoS bandwidth guarantee and mobility management, and user equipment policy decision-making.

In some embodiments, the fourth network element may be independent of the core network device.

In some embodiments, the fourth network element may be part of a core network device.

It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. A person skilled in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A, or part of the subject, but are not limited thereto. The subjects shown in FIG1A are examples, and the communication system may include all or part of the subjects in FIG1A, or may include other subjects other than FIG1A, and the number and form of each subject are arbitrary, and each subject may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.

The embodiments of the present disclosure can be applied to long term evolution (LTE), LTE-advanced (LTE-A), LTE-beyond (LTE-B), SUPER 3G, IMT-Advanced, the fourth generation mobile communication system (4G), the fifth generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), etc. ), global System for mobile communications (GSM (registered trademark)), CDMA2000, ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra wide band (UWB), Bluetooth (registered trademark)), public land mobile network (PLMN) network, device to device (D2D) system, machine to machine (M2M) system, internet of things (IoT) system, vehicle-to-everything (V2X), system using other communication methods, next generation systems expanded based on them, and the like. In addition, a number of systems may also be applied in combination (e.g., combination of LTE or LTE-A with 5G, etc.).

FIG1B is a schematic diagram of a 5G networking architecture provided in an embodiment of the present disclosure.

As shown in Figure 1B, the network functions related to the 5G networking architecture are introduced as follows:

Application function (AF): also known as application controller, mainly used to convey the requirements of the application side to the network side, such as quality of service (QoS) requirements, user status event subscription, etc. AF can be an application function entity of a third-party application, or an application service deployed by an operator, such as IMS voice call service. Among them, when the application function entity of a third-party application interacts with the core network, it can be authorized through the network exposure function (NEF). For example, the application function entity of the third-party application directly sends a request message to the NEF, and the NEF verifies whether the AF is allowed to send the request message. If the verification is successful, the request message is forwarded to the corresponding policy control function (PCF) or unified data management (UDM).

PCF: Mainly used to implement policy control functions such as session and service flow level billing, QoS bandwidth guarantee and mobility management, and user equipment policy decision-making.

SMF: Mainly used for packet data unit (PDU) session management of terminals, execution of PCF control strategy, selection of user plane function (UPF), allocation of terminal IP address when the PDU type is IP type, etc.

UPF: Mainly used as the interface between the terminal and the data network to complete functions such as user plane data forwarding, session/flow-level billing statistics, and bandwidth limitation.

UDM: Mainly used to implement data management functions such as managing contract information and user access authorization.

Access and mobility management function (AMF): Mainly used to implement terminal mobility management, access authentication/authorization and other functions. In addition, AMF is also responsible for transmitting user policies between the terminal and PCF.

Unified data repository (UDR): Mainly responsible for the storage and access of contract information, policy data, application data and other types of data. UDR can be interconnected with UDM, PCF, NEF, etc. to achieve access or call of corresponding network elements.

Of course, the core network may also include other network functions besides the network functions described in the above examples, which are not listed here one by one.

It should be noted that the embodiments of the present disclosure do not limit the names of the corresponding network functions for implementing various functions. It can also implement other functions or be integrated with other functional network elements, and can also be called by other names.

In the 5G networking architecture shown in FIG1B , the main functions of some related communication interfaces between network functions and between network functions and devices are introduced as follows:

N1 interface: It is the signaling interface between AMF and the terminal. It is independent of the access network and is used to exchange signaling messages between the core network and the terminal. It can be used in processes such as terminal registration, terminal establishment of PDU session, and network side terminal policy configuration.

N2 interface: It is the interface between AMF and RAN equipment, used to transmit radio bearer control information from the core network to the RAN equipment.

N3 interface: the interface between (R)AN equipment and UPF, used to transfer terminal service data between RAN equipment and UPF.

N4 interface: It is the interface between SMF and UPF, used to transmit information between the control plane and the user plane. It can be used for the control plane terminal to complete the network access operation and other processes according to the contract information with the operator.

N6 interface: It is the interface between UPF and data network (DN), used to transmit terminal business data between UPF and DN.

N7 interface: It is the interface between PCF and SMF, used to send information such as PDU session granularity and service data flow granularity control strategy.

N8 interface: It is the interface between AMF and UDM, used by AMF to obtain access and mobility management-related subscription information and authentication data from UDM, and AMF to register the current mobility management-related information of the terminal with UDM.

N10 interface: It is the interface between SMF and UDM. It is used by SMF to obtain contract information related to session management from UDM, and SMF to register information related to the current session of the terminal with UDM.

N11 interface: It is the interface between SMF and AMF, used to transmit PDU session tunnel information between RAN equipment and UPF, control messages sent to terminals, radio resource control information sent to RAN equipment, etc.

Mobile media services, cloud AR (augmented reality)/VR (virtual reality) and other XR (extended reality) services, cloud games, video-based machine or drone remote control services, etc. are expected to contribute more and more traffic to 5G networks. XR services also involve multimodal data streams, which can be data input from the same device or different devices (including sensors) to describe the same service or application, and these data may be output to one or more destination device terminals. The data streams in multimodal data are often related, such as the synchronization of audio and video streams, and the synchronization of touch and vision. The data streams of such media services, the data streams between them, and the network transmission requirements of these service data streams all have some common characteristics. The effective identification and utilization of these characteristics will be more conducive to the transmission and control of networks and services, as well as to service assurance and user experience.

XRM (XR and media) services require the 5th generation system (5GS) to comprehensively consider the quality of service (QoS) characteristics of the service's related data flows, such as latency, guaranteed bitrate, and For XRM data flows, the guaranteed flow bit rate (GFBR), packet delay budget (PDB), and maximum data burst volume (MDBV) can be met and coordinated. For multiple XRM data flows of a terminal and XRM data flows of multiple terminals, the consistency of QoS authorization and execution is guaranteed.

In the 5G system, AF is supported to enhance the function of processing XRM service data stream based on each PDU set (Per PDU set). This supports AF to enhance the QoS perception and guarantee of XRM service data stream, as well as the user experience quality (Quality of Experience; QoE). Including, AF provides PDU Set-specific QoS features and protocol descriptions:

-PDU Set Delay Budget (PSDB);

-PDU Set Error Rate (PSER);

-PDU Set Integrated Processing Information (PSIHI).

SMF and UPF can perform the general packet radio service tunneling protocol for the user plane (GTP-U) header extension of the corresponding PDU in the corresponding SDF PDU set in combination with the protocol description and protocol header extension provided by AF, carrying PDU Set information. Among them, PDU Set information is used by NG-RAN for QoS processing based on PDU Set. PDU Set information includes:

-PDU Set serial number.

-Indication of the last PDU of the PDU Set.

-PDU Set internal PDU sequence number.

-PDU Set size in bytes.

-PDU Set Importance, used to identify the relative importance compared to other PDU Sets in the QoS flow.

UPF will perform mapping from AF service data flow (SDF) to QoS flow based on PDR rules, and encapsulate the associated PDU into PDU set, and execute relevant Set-related QoS policies such as PDU Set Error Rate (PSER) and PDU Set Delay Budget (PSDB) on the PDU Set within the QoS flow.

The QoS processing supported by the 5GS system supports either PDU-based QoS rules and parameter policies or PDU-set-based QoS rules and parameter policies in the same QoS flow. That is, there is only one set of QoS parameters that are activated and processed simultaneously in a QoS flow, which is a PDU-based QoS mechanism or a PDU-set-based QoS mechanism.

In the actual network, there are NG-RANs (Non-homogenous support) with different functional supports. For example, there are NG-RANs that do not support PDU set processing and NG-RANs that support PDU set processing. Due to the business continuity requirements of XR, in the handover process (such as terminal mobility), data forwarding (Data forwarding) needs to be performed on the downlink data. (Data forwarding supports direct and indirect modes. In direct mode, the source (Source) NG-RAN forwards to the target (target) NG-RAN. In indirect mode, the UPF performs data forwarding to the target-NG-RAN. It should be noted that in indirect mode, the UPF that performs data forwarding is not necessarily the UPF corresponding to the source NG-RAN in the handover.

Among them, when handover (HO) occurs between an NG-RAN that does not support PDU set processing and an NG-RAN that supports PDU set processing, especially when switching from a source NG-RAN that does not support PDU set processing to a target NG-RAN that supports PDU set processing, unmarked PDUs and marked PDUs will exist in the same QoS flow at the same time.

However, the 5GS system does not support the scenario where both unmarked PDUs and marked PDUs exist in the same QoS flow, and cannot guarantee the QoS of the corresponding QoS flow.

In some embodiments, the generation mechanism of the PCC rule carrying the PDU set QoS parameters is as follows:

The PCF may generate PDU set control information including PDU set QoS parameters and protocol description in the PCC rules based on local configuration or based on information received from the AF.

The PCF generates PDU set control information for the service data flow with PDU set within the PCC rules based on the information provided by the AF or based on local policies.

When the AF requests to establish a data session to the terminal with a specific QoS, the AF may also provide separate QoS parameters request PDU set delay budget, request PDU set error rate and request PDU set comprehensive processing information to describe the requirements for PDU set QoS processing.

The related art does not support determining PCC rules based on capability information processed by PDU set.

Based on this, a rule generation method and a network element are provided in an embodiment of the present disclosure, wherein the method executed by the first network element includes: receiving a first message sent by the second network element, wherein the first message is used to indicate capability information of PDU set processing; and determining a PCC rule based on the first message. Thus, it is possible to support determining PCC rules based on capability information of PDU set processing, thereby ensuring business continuity and improving service quality.

FIG2 is an interactive schematic diagram of a rule generation method according to an embodiment of the present disclosure. As shown in FIG2 , the method includes:

S201. The third network element sends a subscription request to the first network element.

In some embodiments, the first network element receives a subscription request.

In some embodiments, the first network element is a PCF.

In some embodiments, the third network element is an AF.

In some embodiments, a subscription request is used to request capability information for PDU set processing.

In some embodiments, a subscription request is used to request acquisition of the PDU set processing capability information of any network function, or a subscription request is used to request acquisition of the PDU set processing capability of multiple network functions, and the generated PDU set processing capability information of the current business data flow, or a subscription request is used to request acquisition of the PDU set processing capability of multiple network functions, and the generated PDU set processing capability information of the current session, or a subscription request is used to request acquisition of the PDU set processing capability of multiple network functions, and the generated PDU set processing capability information of the current terminal.

In some embodiments, a subscription request is used to request capability information of the RAN's PDU set processing.

In some embodiments, a subscription request is used to request capability information of PDU set processing of the UPF.

In some embodiments, a subscription request is used to request capability information of the SMF's PDU set processing.

In some embodiments, the subscription request is used to request to obtain the PDU set processing capabilities of multiple integrated RAN, UPF, and SMF, and generate the PDU set processing capability information of the current business data flow.

In some embodiments, the subscription request is used to request the acquisition of the capabilities of multiple PDU set processing in the integrated RAN, UPF, and SMF, and the generated PDU set processing capability information of the current session.

In some embodiments, the subscription request is used to request to obtain the PDU set processing capabilities of multiple integrated RAN, UPF, and SMF, and generate the PDU set processing capability information of the current terminal.

In some embodiments, the capability information of PDU set processing includes: the support status of PDU set processing and/or whether the support status of PDU set processing has changed.

In some embodiments, a subscription request is used to request support status information for PDU set processing.

In some embodiments, a subscription request is used to request support status change information for PDU set processing.

In some embodiments, the name of the subscription request is not limited, and may be, for example, a "request message" or the like.

In some embodiments, the third network element sends a subscription request to the first network element. When the third network element is an AF and the first network element is a PCF, the third network element may send the subscription request to the first network element through a network exposure function (NEF).

In some embodiments, the third network element sends a subscription request to the first network element, and the subscription request is used to request to obtain the support status information of the PDU set processing. Therefore, after the first network element receives the subscription request sent by the third network element, it can execute the process of determining the support status information of the PDU set processing.

In some embodiments, the third network element sends a subscription request to the first network element, and the subscription request is used to request to obtain the support status change information of the PDU set processing. Therefore, after the first network element receives the subscription request sent by the third network element, it can execute the process of determining the support status change information of the PDU set processing.

S202: The first network element sends a first subscription event notification to the second network element.

In some embodiments, the second network element is a SMF.

In some embodiments, the first subscription event notification is used to obtain capability information for PDU set processing.

In some embodiments, the first subscription event notification is used to obtain the capability information of PDU set processing of any network function, or the first subscription event notification is used to obtain the capability information of PDU set processing of multiple network functions, and generate the capability information of PDU set processing of the current business data flow, or the first subscription event notification is used to obtain the capability information of PDU set processing of multiple network functions, and generate the capability information of PDU set processing of the current session, or the first subscription event notification is used to obtain the capability information of PDU set processing of multiple network functions, and generate the capability information of PDU set processing of the current terminal.

In some embodiments, the first subscription event notification is used to obtain capability information of PDU set processing of the RAN.

In some embodiments, the first subscription event notification is used to obtain capability information of PDU set processing of UPF.

In some embodiments, the first subscription event notification is used to obtain capability information of PDU set processing of the SMF.

In some embodiments, the first subscription event notification is used to obtain the PDU set processing capabilities of multiple integrated RAN, UPF, and SMF, and generate PDU set processing capability information of the current business data flow.

In some embodiments, the first subscription event notification is used to obtain the capabilities of multiple PDU set processing in the integrated RAN, UPF, and SMF, and generate the PDU set processing capability information of the current session.

In some embodiments, the first subscription event notification is used to obtain the capabilities of multiple PDU set processing in the integrated RAN, UPF, and SMF, and generate the PDU set processing capability information of the current terminal.

In some embodiments, the capability information of PDU set processing includes: the support status of PDU set processing and/or whether the support status of PDU set processing has changed.

In some embodiments, the first subscription event notification is used to obtain support status information for PDU set processing.

In some embodiments, the first subscription event notification is used to obtain PDU set support status change information.

In some embodiments, the name of the first subscription event notification is not limited, and may be, for example, "first request message", "first event subscription request message", etc.

In some embodiments, upon receiving a subscription request sent by a third network element, the first network element sends a first subscription event notification to the second network element.

Exemplarily, the first network element receives a subscription request sent by the third network element, executes a process for determining capability information for PDU set processing, and may send a first subscription event notification to the second network element.

In some embodiments, the first subscription event notification is associated with a policy control request trigger.

Among them, the first subscription event notification is used to obtain the support status information of PDU set processing, or the first subscription event notification is used to obtain the support status change information of PDU set.

It can be understood that if the policy control request trigger is met, the second network element can initiate a session management (Session Management, SM) policy association modification process, wherein the first subscription event notification is related to the policy control request trigger, and the second network element receives the first subscription event notification sent by the first network element, which can be used as a condition for satisfying the policy control request trigger.

Exemplarily, when the first subscription event notification is used to obtain support status information for PDU set processing, the second network element receives the first subscription event notification sent by the first network element and can determine that the policy control request trigger is satisfied, and further determine to execute the acquisition of support status information for PDU set processing.

Exemplarily, when the first subscription event notification is used to obtain PDU set support status change information, the second network element receives the first subscription event notification sent by the first network element and can determine that when the PDU set support status changes, the policy control request trigger is satisfied, and then determines to execute the acquisition of the support status information of the PDU set processing.

Exemplarily, as shown in Table 1 below, access is made to an independent policy control request trigger associated with the SMF.

Table 1

In some embodiments, the capability information of PDU set processing includes a change in the support status of PDU set processing, wherein the first network element sends a first subscription event notification to the second network element, including: the first network element sends a policy control request trigger to the second network element, wherein the policy control request trigger is used for the second network element to send a first message to the first network element when it is determined that the support status of PDU set processing has changed.

In some embodiments, the first network element sends a first subscription event notification to the second network element according to local configuration or OAM configuration.

In the disclosed embodiment, the first network element sends a first subscription event notification to the second network element according to local configuration.

In the disclosed embodiment, the first network element sends a first subscription event notification to the second network element according to operations, administration and maintenance (OAM) configuration.

In some embodiments, the first network element sends a first subscription event notification to the second network element, and the first subscription event notification is used to obtain support status information of the PDU set processing, or the first subscription event notification is used to obtain PDU set support status change information. Thus, when the second network element receives the first subscription event notification sent by the first network element, it can execute a process of determining the support status information of the PDU set processing, or execute a process of obtaining the support status change information of the PDU set processing.

S203: The second network element sends a second subscription event notification to the fourth network element.

In some embodiments, the fourth network element is RAN or UPF.

In some embodiments, the second subscription event notification is used to obtain capability information for PDU set processing.

In some embodiments, the second subscription event notification is used to obtain the capability information of PDU set processing of any network function, or the second subscription event notification is used to obtain the capability information of PDU set processing of the current service data flow generated by integrating the capability of PDU set processing of multiple network functions, or the second subscription event notification is used to obtain the capability information of PDU set processing of the current session generated by integrating the capability of PDU set processing of multiple network functions, or the second subscription event notification is used to obtain the capability information of PDU set processing of the current terminal generated by integrating the capability of PDU set processing of multiple network functions.

In some embodiments, the second subscription event notification is used to obtain capability information of PDU set processing of the RAN.

In some embodiments, the second subscription event notification is used to obtain capability information of PDU set processing of UPF.

In some embodiments, the second subscription event notification is used to obtain the PDU set processing capability of the integrated RAN and UPF, and generate the PDU set processing capability information of the current business data flow.

In some embodiments, the second subscription event notification is used to obtain the PDU set processing capabilities of the integrated RAN and UPF, and generate the PDU set processing capability information of the current session.

In some embodiments, the second subscription event notification is used to obtain the PDU set processing capability of the integrated RAN and UPF, and the generated Information about the PDU set processing capabilities of the current terminal.

In some embodiments, the capability information of PDU set processing includes: the support status of PDU set processing and/or whether the support status of PDU set processing has changed.

In some embodiments, the second subscription event notification is used to obtain support status information for PDU set processing.

In some embodiments, the second subscription event notification is used to obtain PDU set support status change information.

In some embodiments, the name of the second subscription event notification is not limited, and may be, for example, a "second request message", a "second event subscription request message", or the like.

In some embodiments, upon receiving the first subscription event notification sent by the first network element, the second network element sends a second subscription event notification to the fourth network element.

Exemplarily, the second network element receives a first subscription event notification sent by the first network element, executes a process for determining support status information of PDU set processing, or executes a process for obtaining support status change information of PDU set processing, and sends a second subscription event notification to the fourth network element.

In some embodiments, the second network element sends a second subscription event notification to the fourth network element. When the fourth network element is RAN, the second network element sends the second subscription event notification to the fourth network element through AMF.

In some embodiments, the second network element receives a first subscription event notification sent by the first network element, and the first subscription event notification is used to obtain capability information of PDU set processing. Based on this, the second network element receives the first subscription event notification sent by the first network element, determines to execute a process to determine the capability information of PDU set processing, and then the second network element sends a second subscription event notification to the fourth network element, and the second subscription event notification is used to obtain capability information of PDU set processing.

In some embodiments, the second network element receives a first subscription event notification sent by the first network element, and the first subscription event notification is used to obtain support status information of PDU set processing. Based on this, the second network element receives the first subscription event notification sent by the first network element, determines to execute a process to determine the support status information of PDU set processing, and then the second network element sends a second subscription event notification to the fourth network element, and the second subscription event notification is used to obtain support status information of PDU set processing.

In some embodiments, the second network element receives a first subscription event notification sent by the first network element, and the first subscription event notification is used to obtain PDU set support status change information. Based on this, the second network element receives the first subscription event notification sent by the first network element, determines to execute a process to determine the support status change information of PDU set processing, and then the second network element sends a second subscription event notification to the fourth network element, and the second subscription event notification is used to obtain PDU set support status change information.

S204: The fourth network element sends a third message to the second network element.

In some embodiments, the third message is used to indicate capability information of PDU set processing.

In some embodiments, the third message is used to indicate the capability information of PDU set processing of any network function, or the third message is used to indicate the capability information of PDU set processing of multiple network functions, and the capability information of PDU set processing of the current service data flow is generated, or the third message is used to indicate the capability information of PDU set processing of multiple network functions, and the capability information of PDU set processing of the current session is generated, or the third message is used to indicate the capability information of PDU set processing of multiple network functions, and the capability information of PDU set processing of the current terminal is generated.

In some embodiments, the third message is used to indicate capability information of PDU set processing of the RAN.

In some embodiments, the third message is used to indicate capability information of PDU set processing of the UPF.

In some embodiments, the third message is used to indicate the PDU set processing capability of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current service data flow.

In some embodiments, the third message is used to indicate the PDU set processing capabilities of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current session.

In some embodiments, the third message is used to indicate the PDU set processing capability of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current terminal.

In some embodiments, the capability information of PDU set processing includes: the support status of PDU set processing and/or whether the support status of PDU set processing has changed.

In some embodiments, a third message is used to indicate the support status of PDU set processing.

In some embodiments, the third message is used to indicate that the support status of PDU set processing is supported.

In some embodiments, the third message is used to indicate that the support status of PDU set processing is not supported.

In some embodiments, the third message is used to indicate that the support status of PDU set processing is activated.

In some embodiments, the third message is used to indicate that the support state of PDU set processing is a deactivated state.

In some embodiments, a third message is used to indicate whether the support status of the PDU set processing has changed.

In some embodiments, a third message is used to indicate a change in the support status of PDU set processing.

In some embodiments, the third message is used to indicate that the support status of the PDU set processing has not changed.

In some embodiments, the third message is used to indicate that the support status of the PDU set processing is changed from supported to not supported.

In some embodiments, the third message is used to indicate that the support status of the PDU set processing is changed from not supported to supported.

In some embodiments, the third message is used to indicate that the support state of the PDU set processing changes from an activated state to a deactivated state.

In some embodiments, the third message is used to indicate that the support state of the PDU set processing is changed from a deactivated state to an activated state.

In some embodiments, the name of the third message is not limited, and it may be, for example, "subscription event report message" or the like.

In some embodiments, the supported state of PDU set processing may also be referred to as the available state of PDU set processing, and may be interchangeable with the available state of PDU set processing.

In some embodiments, upon receiving the second subscription event notification sent by the second network element, the fourth network element sends a third message to the second network element.

In some embodiments, the fourth network element determines that a specified condition is met and sends a third message to the second network element.

The specified conditions include at least one of the following:

A network element switching occurs, and the fourth network element is the switched network element;

PDU set processing capability changes;

Changes in PDU set processing capabilities caused by OAM configuration triggers;

Changes in PDU set processing capabilities caused by triggering busy and idle time windows;

Changes in PDU set processing capabilities caused by QoS notification control triggers;

PDU set handles state changes;

PDU set processing status changes caused by OAM configuration triggers;

PDU set processing status change caused by triggering when the time window is busy or idle;

PDU set processing state change caused by QoS notification control trigger.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when it is determined that a network element switching occurs and the fourth network element is a switched network element.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when determining that the PDU set processing capability has changed.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when determining that the PDU set processing capability has changed due to an OAM configuration trigger.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when determining that the PDU set processing capability has changed due to a trigger based on the busy or idle time window.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when determining that the PDU set processing capability has changed due to a QoS notification control trigger.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when determining that the PDU set processing status has changed.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when determining that the PDU set processing status has changed due to an OAM configuration trigger.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when determining that the PDU set processing status has changed due to a trigger based on the busy or idle time window.

In the disclosed embodiment, the fourth network element sends a third message to the second network element when determining that the PDU set processing status has changed due to a QoS notification control trigger.

In some embodiments, the fourth network element receives a second subscription event notification sent by the second network element, and sends a third message to the second network element if it is determined that a specified condition is met.

It should be noted that the above embodiments are not exhaustive and are only examples of some embodiments. In the embodiments of the present disclosure, the specified conditions may also be other situations than those shown in the above embodiments, and the embodiments of the present disclosure do not impose specific limitations on this.

In some embodiments, the fourth network element sends a third message to the second network element, including: sending the third message to the second network element through AMF, wherein the fourth network element is RAN and the second network element is SMF.

In the embodiment of the present disclosure, when the fourth network element is RAN, the fourth network element sends the third message to the second network element, and the third message may be sent to the second network element through AMF.

S205. The second network element sends a first message to the first network element.

In some embodiments, the first message is used to indicate capability information of PDU set processing.

In some embodiments, the first message is used to indicate capability information of PDU set processing of any network function, or the first message is used to indicate capability information of PDU set processing of multiple network functions, and capability information of PDU set processing of current service data flow is generated, or the first message is used to indicate capability information of PDU set processing of multiple network functions, and capability information of PDU set processing of current session is generated, or the first message is used to indicate capability information of PDU set processing of multiple network functions, and capability information of PDU set processing of current terminal is generated.

In some embodiments, the first message is used to indicate capability information of PDU set processing of the RAN.

In some embodiments, the first message is used to indicate capability information of PDU set processing of the UPF.

In some embodiments, the first message is used to indicate the PDU set processing capability of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current service data flow.

In some embodiments, the first message is used to indicate the PDU set processing capabilities of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current session.

In some embodiments, the first message is used to indicate the PDU set processing capability of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current terminal.

In some embodiments, the capability information of PDU set processing includes: the support status of PDU set processing and/or whether the support status of PDU set processing has changed.

In some embodiments, the first message is used to indicate the support status of PDU set processing.

In some embodiments, the first message is used to indicate that the support status of PDU set processing is supported.

In some embodiments, the first message is used to indicate that the support status of PDU set processing is not supported.

In some embodiments, the first message is used to indicate that the support status of the PDU set processing is an activated state.

In some embodiments, the first message is used to indicate that the support state of the PDU set processing is a deactivated state.

In some embodiments, the first message is used to indicate whether the support status of the PDU set processing has changed.

In some embodiments, the first message is used to indicate a change in the support status of PDU set processing.

In some embodiments, the first message is used to indicate that the support status of the PDU set processing has not changed.

In some embodiments, the first message is used to indicate that the support status of the PDU set processing changes from supported to not supported.

In some embodiments, the first message is used to indicate that the support status of the PDU set processing is changed from not supported to supported.

In some embodiments, the first message is used to indicate that the support state of the PDU set processing is changed from an activated state to a deactivated state.

In some embodiments, the first message is used to indicate that the support state of the PDU set processing is changed from a deactivated state to an activated state.

In some embodiments, the name of the first message is not limited, and it may be, for example, "subscription event report message" or the like.

In some embodiments, the supported state of PDU set processing may also be referred to as the available state of PDU set processing, and may be interchangeable with the available state of PDU set processing.

In some embodiments, upon receiving the third message sent by the fourth network element, the second network element sends the first message to the first network element.

In some embodiments, the second network element activates PDU set QoS processing and sends a first message to the first network element, where the first message is used to indicate capability information of the PDU set processing, that is, the first message is used to indicate that the support status of the PDU set processing is supported, or the first message is used to indicate that the support status of the PDU set processing has changed, or the first message is used to indicate that the support status of the PDU set processing has changed from not supported to supported.

In some embodiments, the second network element deactivates PDU set QoS processing and sends a first message to the first network element, where the first message is used to indicate capability information of the PDU set processing, that is, the first message is used to indicate that the support status of the PDU set processing is not supported, or the first message is used to indicate that the support status of the PDU set processing has changed, or the first message is used to indicate that the support status of the PDU set processing has changed from supported to not supported.

In some embodiments, upon receiving a first subscription event notification sent by the first network element, the second network element sends a first message to the first network element.

In some embodiments, the first network element receives the first message sent by the second network element and initiates a session modification process; or initiates a session management policy association modification process.

In the embodiment of the present disclosure, the first network element may initiate a session modification process by receiving a first message sent by the second network element.

In the embodiment of the present disclosure, the first network element receives the first message sent by the second network element and may initiate a session management policy association modification process.

In some embodiments, the second network element sends a first message to the first network element to initiate a session management policy creation process, or initiates a session management policy modification process.

In the embodiment of the present disclosure, the second network element sends a first message to the first network element to initiate a session management policy creation process.

In the disclosed embodiment, the second network element sends a first message to the first network element to initiate a session management policy modification process.

S206. The first network element sends a second message to the third network element.

In some embodiments, the second message is used to indicate capability information of PDU set processing.

In some embodiments, the second message is used to indicate the capability information of PDU set processing of any network function, or the second message is used to indicate the capability information of PDU set processing of multiple network functions, and the capability information of PDU set processing of the current service data flow is generated, or the second message is used to indicate the capability information of PDU set processing of multiple network functions, and the capability information of PDU set processing of the current session is generated, or the second message is used to indicate the capability information of PDU set processing of multiple network functions, and the capability information of PDU set processing of the current terminal is generated.

In some embodiments, the second message is used to indicate capability information of the PDU set processing of the RAN.

In some embodiments, the second message is used to indicate capability information of PDU set processing of the UPF.

In some embodiments, the second message is used to indicate the PDU set processing capability of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current service data flow.

In some embodiments, the second message is used to indicate the PDU set processing capability of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current session.

In some embodiments, the second message is used to indicate the PDU set processing capability of the integrated RAN and UPF, and to generate the PDU set processing capability information of the current terminal.

In some embodiments, the capability information of PDU set processing includes: the support status of PDU set processing and/or whether the support status of PDU set processing has changed.

In some embodiments, the second message is used to indicate the support status of PDU set processing.

In some embodiments, the second message is used to indicate that the support status of PDU set processing is supported.

In some embodiments, the second message is used to indicate that the support status of PDU set processing is not supported.

In some embodiments, the second message is used to indicate that the support status of the PDU set processing is an activated state.

In some embodiments, the second message is used to indicate that the support state of the PDU set processing is a deactivated state.

In some embodiments, the second message is used to indicate whether the support status of the PDU set processing has changed.

In some embodiments, the second message is used to indicate a change in the support status of the PDU set processing.

In some embodiments, the second message is used to indicate that the support status of the PDU set processing has not changed.

In some embodiments, the second message is used to indicate that the support status of the PDU set processing changes from supported to not supported.

In some embodiments, the second message is used to indicate that the support status of the PDU set processing is changed from not supported to supported.

In some embodiments, the second message is used to indicate that the support state of the PDU set processing is changed from an activated state to a deactivated state.

In some embodiments, the second message is used to indicate that the support state of the PDU set processing is changed from a deactivated state to an activated state.

In some embodiments, the name of the second message is not limited, and it may be, for example, "subscription event report message" or the like.

In some embodiments, the supported state of PDU set processing may also be referred to as the available state of PDU set processing, and may be interchangeable with the available state of PDU set processing.

In some embodiments, upon receiving the first message sent by the second network element, the first network element sends a second message to the third network element.

Based on this, when the third network element is an AF, the first network element sends a second message to the third network element, which can be used to request new QoS requirements or trigger AF session modification.

In some embodiments, the first network element may send a second message to the third network element upon receiving a subscription request sent by the third network element.

S207: The first network element determines a PCC rule based on the first message.

It can be understood that the first network element receives the first message, and the first message is used to indicate the capability information of the PDU set processing. The first network element can determine the PCC rules based on the capability information of the PDU set processing.

In some embodiments, the first network element determines the PCC rule based on the capability information processed by the PDU set, which may include at least one of the following:

In the absence of a current PCC rule, the first network element may generate a PCC rule matching the capability information processed by the PDU set based on the capability information processed by the PDU set;

In the case where the current PCC rule exists, if the current PCC rule matches the capability information processed by the PDU set, the first network element may determine to continue to use the current PCC rule and determine the PCC rule as the current PCC rule;

In the case where there is a current PCC rule, if the current PCC rule does not match the capability information processed by the PDU set, the first network element may determine to update the current PCC rule and determine that the PCC rule is an updated PCC rule.

In some embodiments, if the current PCC rule is generated based on the PDU set, and the capability information of the PDU set processing indicates support for the PDU set processing, it is determined that the current PCC rule matches the capability information of the PDU set processing.

In some embodiments, if the current PCC rule is generated based on the PDU set, and the capability information of the PDU set processing indicates that the PDU set processing is not supported but the PDU processing is supported, it is determined that the current PCC rule does not match the capability information of the PDU set processing.

In some embodiments, if the current PCC rule is generated based on the PDU, and the capability information of the PDU set processing indicates that the PDU set processing is supported but not the PDU processing, it is determined that the current PCC rule does not match the capability information of the PDU set processing.

In some embodiments, if the current PCC rule is generated based on the PDU, and the capability information of the PDU set processing indicates that the PDU set processing is not supported but the PDU processing is supported, it is determined that the current PCC rule matches the capability information of the PDU set processing.

In some embodiments, the capability information of PDU set processing includes the support status of PDU set processing, and the capability information of PDU set processing may indicate whether PDU set processing is supported.

For example, when the support status of PDU set processing is supported, the capability information of PDU set processing may indicate support for PDU set processing; or when the support status of PDU set processing is not supported, the capability information of PDU set processing may indicate that PDU set processing is not supported.

It can be understood that the capability information of PDU set processing includes whether the support status of PDU set processing has changed, and the capability information of PDU set processing can indicate whether PDU set processing is supported based on the information of change in the support status of PDU set processing.

Exemplarily, the support status of PDU set processing is changed from supporting PDU set processing to supporting PDU processing, and the capability information of PDU set processing may indicate that PDU set processing is not supported but PDU processing is supported; or the support status of PDU set processing is changed from supporting PDU processing to supporting PDU set processing, and the capability information of PDU set processing may indicate that PDU set processing is supported but PDU processing is not supported.

It should be noted that the above examples are only for illustration and are not intended to be specific limitations on the embodiments of the present disclosure.

In some embodiments, the first message is used to indicate capability information of PDU set processing. Thus, the first network element determines the PCC rule based on the first message.

It is understandable that when determining the PCC rules, considering the capability information of PDU set processing can make the PCC rules match the capabilities of PDU set processing, avoid using PCC rules generated based on PDU and carrying PDU QoS parameters for PDU set processing, or avoid using PCC rules generated based on PDU set and carrying PDU set QoS parameters for PDU processing, which can ensure business continuity and improve service quality.

In some embodiments, the first network element receives a first message sent by the second network element, thereby determining the PCC rule based on the first message.

In some embodiments, the PCC rule includes a first PCC rule generated by a first network element, and the first network element determines the PCC rule based on the first message, including:

determining that the first message is used to indicate support for PDU set processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate support for PDU processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

Determining that the first message is used to indicate that the support status of the PDU set processing is changed from not supported to supported, and no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate that the support status of the PDU set processing is changed from supported to not supported, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

Determine that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and that no PCC rule currently exists, determine that a PCC rule is generated, and determine a first PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate support for PDU set processing and no PCC rule currently exists, it determines to generate a PCC rule and determines a first PCC rule.

In the embodiment of the present disclosure, the first network element determines to generate a PCC rule and determines a first PCC rule when determining that the first message is used to indicate support for PDU processing and no PCC rule currently exists.

In the embodiment of the present disclosure, when the first network element determines that the first message is used to indicate that the support status of PDU set processing has changed from not supported to supported, and there is currently no PCC rule, the first network element determines to generate a PCC rule and determines the first PCC rule.

In the embodiment of the present disclosure, when the first network element determines that the first message is used to indicate that the support status of PDU set processing has changed from supported to not supported and there is currently no PCC rule, the first network element determines to generate a PCC rule and determines the first PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing and there is currently no PCC rule, the first network element determines to generate a PCC rule and determines the first PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and there is currently no PCC rule, the first network element determines to generate a PCC rule and determines the first PCC rule.

It should be noted that the above embodiments are not exhaustive and are only examples of some embodiments. In the embodiments of the present disclosure, the first network element determines the first PCC rule based on the first message, and other methods other than those shown in the above embodiments may be used. The embodiments of the present disclosure do not impose specific restrictions on this.

In some embodiments, the PCC rule includes a second PCC rule updated by the first network element, and the first network element determines the PCC rule based on the first message, including:

determining that the first message is used to indicate support for PDU set processing, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate support for PDU processing, and the current PCC rule is generated based on the PDU set, determining to update the current PCC rule, and determining a second PCC rule; or

Determine that the first message is used to indicate that the support status of the PDU set processing is changed from unsupported to supported, and the current PCC rule is based on The PDU is generated, determining to update the current PCC rule and determining a second PCC rule; or

Determining that the first message is used to indicate that the support status of the PDU set processing is changed from supported to not supported, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determine that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and the current PCC rule is generated based on the PDU set, determine to update the current PCC rule, and determine the second PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate support for PDU set processing and the current PCC rule is generated based on the PDU, the first network element determines to update the current PCC rule and determines the second PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate support for PDU processing and the current PCC rule is generated based on the PDU set, the first network element determines to update the current PCC rule and determines the second PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate that the support status of PDU set processing has changed from not supported to supported, and the current PCC rule is generated based on the PDU, the first network element determines to update the current PCC rule and determines the second PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate that the support status of PDU set processing has changed from supported to not supported, and the current PCC rule is generated based on the PDU, the first network element determines to update the current PCC rule and determines the second PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and the current PCC rule is generated based on the PDU, the first network element determines to update the current PCC rule and determines the second PCC rule.

In the disclosed embodiment, when the first network element determines that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and the current PCC rule is generated based on the PDU set, the first network element determines to update the current PCC rule and determines the second PCC rule.

It should be noted that the above embodiments are not exhaustive and are only examples of some embodiments. In the embodiments of the present disclosure, the first network element determines the second PCC rule based on the first message, and other methods other than those shown in the above embodiments may be used. The embodiments of the present disclosure do not impose specific restrictions on this.

S208: The first network element sends the PCC rule to the second network element.

In the embodiment of the present disclosure, when the first network element determines the generated first PCC rule, the first network element may send the generated first PCC rule to the second network element.

In the embodiment of the present disclosure, when the first network element determines the updated second PCC rule, the first network element may send the updated second PCC rule to the second network element.

In some embodiments, the first network element determines the generated first PCC rule based on the first message sent by the second network element.

In some embodiments, the first network element determines an updated second PCC rule based on the first message sent by the second network element.

In some embodiments, the PCC rules sent by the first network element to the second network element are determined by the first network element based on the first message, and the first message is used to indicate the capability information processed by the PDUset, so that the PCC rules can match the capability information processed by the PDUset, thereby ensuring business continuity and improving service quality.

And because the first message is sent from the second network element to the first network element, the PCC rule can match the capability information of the PDUset processing determined by the second network element, thereby ensuring business continuity and improving service quality.

S209: The second network element determines a QoS rule according to the PCC rule.

In the embodiment of the present disclosure, the second network element may determine the QoS rule according to the PCC rule.

In some embodiments, the second network element receives the PCC rule sent by the first network element, and then determines the QoS rule according to the PCC rule.

In some embodiments, the PCC rules can match the capability information of the PDUset processing determined by the second network element. Based on this, the second network element determines the QoS rules according to the PCC rules. The determined QoS rules can also match the capability information of the PDUset processing determined by the second network element, thereby ensuring business continuity and improving service quality.

S210, the second network element sends the QoS rule to the fourth network element.

In the disclosed embodiment, the second network element may send QoS rules to the fourth network element.

In some embodiments, the second network element determines the QoS rule according to the PCC rule sent by the first network element.

It can be understood that the second network element determines the QoS rules according to the PCC rules, which can match the capability information of the PDUset processing determined by the second network element. Therefore, the second network element sends the QoS rules to the fourth network element, which can match the PDUset processing process corresponding to the capability information of the PDUset processing, thereby ensuring business continuity and improving service quality.

In some embodiments, the second network element sends the QoS rules to the fourth network element through the AMF, and the fourth network element is the RAN.

In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, such as "information", "message", etc. The terms “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “domain”, “field”, “symbol”, “symbol”, “codebook”, “codeword”, “codepoint”, “bit”, “data”, “program”, and “chip” are used interchangeably.

In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like can be used interchangeably.

In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and/or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.

In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

In some embodiments, terms such as "certain", "preset", "preset", "set", "indicated", "some", "any", and "first" can be interchangeable, and "specific A", "preset A", "preset A", "set A", "indicated A", "some A", "any A", and "first A" can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.

The communication method involved in the embodiments of the present disclosure may include at least one of S201 to S210. For example, S201 may be implemented as an independent embodiment, S202 may be implemented as an independent embodiment, S203 may be implemented as an independent embodiment, S204 may be implemented as an independent embodiment, S205 may be implemented as an independent embodiment, S206 may be implemented as an independent embodiment, S207 may be implemented as an independent embodiment, S208 may be implemented as an independent embodiment, S209 may be implemented as an independent embodiment, and S210 may be implemented as an independent embodiment.

S201+S206 can be implemented as an independent embodiment, S202+S205 can be implemented as an independent embodiment, S203+S204 can be implemented as an independent embodiment, S205+S207 can be implemented as an independent embodiment, S205+S207+S208 can be implemented as an independent embodiment, S205+S207+S208+S209 can be implemented as an independent embodiment, S205+S207+S208+S209+S210 can be implemented as an independent embodiment, and S203+S204+S205+S207+S208+S209+S210 can be implemented as an independent embodiment, but are not limited to this.

In some embodiments, S206 and S207 may be executed in an exchanged order or simultaneously.

In some embodiments, S201, S202, S203, S204, S206, S207, S208, S209, and S210 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S201, S202, S203, S204, S206, S208, S209, and S210 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S201, S202, S203, S204, S206, S209, and S210 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S201, S202, S203, S204, S206, and S210 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S201, S202, S203, S204, and S206 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S201, S202, S203, and S206 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S201, S202, and S206 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S201 and S206 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to FIG. 2 .

FIG3A is a flow chart of a rule generation method according to an embodiment of the present disclosure. As shown in FIG3A , the method is executed by a first network element, and the method includes:

S301A, obtain a first message.

Among them, the optional implementation of S301A can refer to the optional implementation of S205 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the first network element receives the first message from the second network element, but is not limited thereto, and may also receive the first message from other entities. The first message sent.

In some embodiments, the first network element obtains a first message specified by a protocol.

In some embodiments, the first network element obtains the first message from an upper layer(s).

In some embodiments, the first network element performs processing to obtain the first message.

In some embodiments, S301A is omitted, and the first network element autonomously implements the function indicated by the first message, or the above function is default or acquiescent.

In some embodiments, the first message is used to indicate capability information of PDUset processing.

In some embodiments, the capability information of PDU set processing includes: the support status of PDU set processing and/or whether the support status of PDU set processing has changed.

S302A, determine PCC rules.

Among them, the optional implementation of S302A can refer to the optional implementation of S207 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the first network element determines a PCC rule based on the first message.

In some embodiments, the PCC rule includes a first PCC rule generated by a first network element, and the first network element determines the PCC rule based on the first message, including:

determining that the first message is used to indicate support for PDU set processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate support for PDU processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate that the support status of the PDU set processing is changed from not supported to supported, and no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate that the support status of the PDU set processing is changed from supported to not supported, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

determining that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining a first PCC rule; or

Determine that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and that no PCC rule currently exists, determine that a PCC rule is generated, and determine a first PCC rule.

In some embodiments, the PCC rule includes a second PCC rule updated by the first network element, and the first network element determines the PCC rule based on the first message, including:

determining that the first message is used to indicate support for PDU set processing, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate support for PDU processing, and the current PCC rule is generated based on the PDU set, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate that the support status of the PDU set processing is changed from not supported to supported, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate that the support status of the PDU set processing is changed from supported to not supported, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determining that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining a second PCC rule; or

Determine that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and the current PCC rule is generated based on the PDU set, determine to update the current PCC rule, and determine the second PCC rule.

In some embodiments, the first network element determines the PCC rule based on the first message and initiates a session modification process; or initiates a session management policy association modification process.

S303A, sending PCC rules.

Among them, the optional implementation of S303A can refer to the optional implementation of S208 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the first network element sends the PCC rule to the second network element, but is not limited thereto, and the PCC rule may also be sent to other entities.

Optionally, the PCC rule is used by the second network element to determine a QoS rule. For its optional implementation, please refer to the optional implementation of S209 in FIG2 and other related parts in the embodiment involved in FIG2 , which will not be described in detail here.

The communication method involved in the embodiment of the present disclosure may include at least one of S301A to S303A. For example, S301A may be implemented as an independent embodiment, S302A may be implemented as an independent embodiment, and S303A may be implemented as an independent embodiment. S301A+S302A may be implemented as an independent embodiment, and S301A+S302A+S303A may be implemented as an independent embodiment, but are not limited thereto.

In some embodiments, S303A is optional, and one or more of these steps may be omitted or replaced in different embodiments.

FIG3B is a flow chart of a rule generation method according to an embodiment of the present disclosure. As shown in FIG3B , the above embodiment is executed by a first network element, and the above method includes:

S301B, obtain the first message.

Among them, the optional implementation of S301B can refer to the optional implementation of S205 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

S302B, sending a second message.

Among them, the optional implementation of S302B can refer to the optional implementation of S206 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, after acquiring the first message, the first network element may send the second message.

In some embodiments, the first network element sends the second message to the third network element, but is not limited thereto, and the second message may also be sent to other entities.

In some embodiments, the second message is used by the third network element to provide new QoS requirements or trigger AF session modification.

S303B, determine the PCC rule.

Among them, the optional implementation of S303B can refer to the optional implementation of S207 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

Among them, the optional implementation methods of S301B and S303B can refer to S205 and S207 in Figure 2, the optional implementation methods of S301A and S302A in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

The communication method involved in the embodiments of the present disclosure may include at least one of S301B to S303B. For example, S301B may be implemented as an independent embodiment, S302B may be implemented as an independent embodiment, S303B may be implemented as an independent embodiment, S301B+S302B may be implemented as an independent embodiment, and S301B+S303B may be implemented as an independent embodiment, but are not limited thereto.

In some embodiments, S302B and S303B may be executed in an exchanged order or simultaneously.

In some embodiments, S302B is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S303B is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In the embodiment of the present disclosure, S302B may be combined with S301A to S303A of FIG. 3A .

FIG3C is a flow chart of a rule generation method according to an embodiment of the present disclosure. As shown in FIG3C , the method is executed by a first network element, and the method includes:

S301C, obtain a subscription request.

Among them, the optional implementation of S301C can refer to the optional implementation of S201 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the first network element receives a subscription request sent by a third network element, but is not limited thereto, and may also receive a subscription request sent by other entities.

In some embodiments, the first network element obtains a subscription request specified by the protocol.

In some embodiments, the first network element obtains a subscription request from an upper layer(s).

In some embodiments, the first network element performs processing to obtain a subscription request.

In some embodiments, S301C is omitted, and the first network element autonomously implements the function indicated by the subscription request, or the above function is default or acquiescent.

S302C, sending a first subscription event notification.

Among them, the optional implementation of S302C can refer to the optional implementation of S202 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the first network element sends the first subscription event notification to the second network element, but is not limited thereto, and the first subscription event notification may also be sent to other entities.

In some embodiments, the first subscription event notification is used by the second network element to send a second subscription event notification to the fourth network element. The optional implementation method thereof can refer to the optional implementation method of S203 in FIG2 and other related parts in the embodiment involved in FIG2, which will not be repeated here.

In some embodiments, the first subscription event notification is associated with a policy control request trigger.

The communication method involved in the embodiment of the present disclosure may include at least one of S301C to S302C. For example, S301C may be used as S302C can be implemented as an independent embodiment, but is not limited thereto.

In some embodiments, S301C is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In the embodiment of the present disclosure, S301C or S302C may be implemented in combination with S301A to S303A of FIG. 3A , wherein S301C or S302C is executed before S301A.

In the embodiment of the present disclosure, S301C or S302C may be implemented in combination with S301B to S303B of FIG. 3B , wherein S301C or S302C is executed before S301B.

In the embodiment of the present disclosure, S301C or S302C may be implemented in combination with S301A to S303A of FIG. 3A and S301B to S303B of FIG. 3B , wherein S301C or S302C is executed before S301A and S301B.

FIG4A is a flow chart of a rule generation method according to an embodiment of the present disclosure. As shown in FIG4A , the method is executed by a second network element, and the method includes:

S401A, sending a first message.

Among them, the optional implementation of S401A can refer to the optional implementation of S205 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the second network element sends the first message to the first network element, but is not limited thereto, and the first message may also be sent to other entities.

Optionally, the first message is used by the first network element to determine a PCC rule. For its optional implementation, please refer to the optional implementation of S207 in FIG2 and other related parts in the embodiment involved in FIG2 , which will not be described in detail here.

Optionally, the first message is used by the first network element to send a second message to the third network element. For its optional implementation, please refer to the optional implementation of S206 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

S402A, obtaining PCC rules.

Among them, the optional implementation of S402A can refer to the optional implementation of S208 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the second network element receives the PCC rule sent by the first network element, but is not limited thereto, and may also receive the PCC rule sent by other entities.

In some embodiments, the second network element obtains a PCC rule specified by a protocol.

In some embodiments, the second network element obtains the PCC rules from upper layer(s).

In some embodiments, the second network element performs processing to obtain the PCC rule.

In some embodiments, S402A is omitted, and the access network device 102 determines the PCC rule by itself, or the above functions are default or acquiescent.

S403A, determine QoS rules.

Among them, the optional implementation of S403A can refer to the optional implementation of S209 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the second network element may determine the QoS rule according to the PCC rule.

S404A, sending QoS rules.

Among them, the optional implementation of S404A can refer to the optional implementation of S210 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the second network element sends the QoS rules to the fourth network element, but is not limited thereto, and the QoS rules may also be sent to other entities.

The communication method involved in the embodiments of the present disclosure may include at least one of S401A to S404A. For example, S401A may be implemented as an independent embodiment, S402A may be implemented as an independent embodiment, S403A may be implemented as an independent embodiment, S404A may be implemented as an independent embodiment, S401A+S402A may be implemented as an independent embodiment, and S401A+S402A+S403A may be implemented as an independent embodiment, but is not limited thereto.

In some embodiments, S402A, S403A, and S404A are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S403A and S404A are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S404A is optional, and one or more of these steps may be omitted or replaced in different embodiments.

FIG4B is a flow chart of a rule generation method according to an embodiment of the present disclosure. As shown in FIG4B , the method is executed by a second network element, and the method includes:

S401B, obtaining a first subscription event notification.

Among them, the optional implementation of S401B can refer to the optional implementation of S202 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the second network element receives the first subscription event notification sent by the first network element, but is not limited thereto, and may also receive the first subscription event notification sent by other entities.

In some embodiments, the second network element obtains a first subscription event notification specified by a protocol.

In some embodiments, the second network element obtains the first subscription event notification from the upper layer(s).

In some embodiments, the second network element performs processing to obtain the first subscription event notification.

In some embodiments, S401B is omitted, and the second network element autonomously implements the function indicated by the first subscription event notification, or the above function is default or acquiescent.

S402B, sending a second subscription event notification.

Among them, the optional implementation of S402B can refer to the optional implementation of S203 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the second network element sends the second subscription event notification to the fourth network element, but is not limited thereto, and the second subscription event notification may also be sent to other entities.

In some embodiments, the second subscription event notification is used for the fourth network element to send a third message to the second network element. For optional implementations thereof, see the optional implementations of S204 in FIG2 and other related parts in the embodiments involved in FIG2 , which will not be described in detail here.

S403B, obtain the third message.

Among them, the optional implementation of S403B can refer to the optional implementation of S204 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the second network element receives the third message from the fourth network element, but is not limited thereto, and may also receive the third message sent by other entities.

In some embodiments, the second network element obtains a third message specified by the protocol.

In some embodiments, the second network element obtains the third message from the upper layer(s).

In some embodiments, the second network element performs processing to obtain a third message.

In some embodiments, S401B is omitted, and the second network element autonomously implements the function indicated by the third message, or the above function is default or acquiescent.

The communication method involved in the embodiments of the present disclosure may include at least one of S401B to S303B. For example, S401B may be implemented as an independent embodiment, S402B may be implemented as an independent embodiment, S403B may be implemented as an independent embodiment, S401B+S402B may be implemented as an independent embodiment, and S402B+S403B may be implemented as an independent embodiment, but are not limited thereto.

In some embodiments, S402B and S403B are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S401B is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S401B and S403B are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, S403B is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In the embodiment of the present disclosure, S401B to S403B may be implemented in combination with S401A to S404A of FIG. 4A , wherein S401B to S403B are executed before S401A.

FIG5A is an interactive schematic diagram of a rule generation method according to an embodiment of the present disclosure. As shown in FIG5A , the method is executed by a fourth network element, and the method includes:

S501A, obtaining a second subscription event notification.

Among them, the optional implementation of S501A can refer to the optional implementation of S203 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the fourth network element receives the second subscription event notification sent by the second network element, but is not limited thereto, and may also receive the second subscription event notification sent by other entities.

In some embodiments, the fourth network element obtains a second subscription event notification specified by the protocol.

In some embodiments, the fourth network element obtains a second subscription event notification from an upper layer(s).

In some embodiments, the fourth network element performs processing to obtain the second subscription event notification.

In some embodiments, S501A is omitted, and the fourth network element autonomously implements the function indicated by the second subscription event notification, or the above function is default or acquiescent.

S502A, sending a third message.

Among them, the optional implementation of S502A can refer to the optional implementation of S204 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the fourth network element sends the third message to the second network element, but is not limited thereto, and the third message may also be sent to other entities.

In some embodiments, the third message is used for the second network element to send the first message to the first network element. For optional implementations thereof, reference may be made to the optional implementations of S205 in FIG2 and other related parts in the embodiments involved in FIG2 , which will not be described in detail here.

The communication method involved in the embodiment of the present disclosure may include at least one of S501A to S502A. For example, S501A may be implemented as an independent embodiment, and S502A may be implemented as an independent embodiment, but is not limited thereto.

In some embodiments, S501A is optional, and one or more of these steps may be omitted or replaced in different embodiments.

FIG5B is an interactive schematic diagram of a rule generation method according to an embodiment of the present disclosure. As shown in FIG5B , the method is executed by a fourth network element, and the method includes:

S501B, obtaining a second subscription event notification.

Among them, the optional implementation of S501B can refer to the optional implementation of S203 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

S502B, sending a third message.

Among them, the optional implementation of S502B can refer to the optional implementation of S204 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

S503B, obtain QoS rules.

Among them, the optional implementation of S503A can refer to the optional implementation of S210 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

In some embodiments, the fourth network element receives the QoS rules sent by the second network element, but is not limited thereto, and may also receive QoS rules sent by other entities.

In some embodiments, the fourth network element obtains QoS rules specified by the protocol.

In some embodiments, the fourth network element obtains QoS rules from upper layer(s).

In some embodiments, the fourth network element performs processing to obtain QoS rules.

In some embodiments, S501A is omitted, and the fourth network element autonomously implements the function indicated by the QoS rule, or the above function is default or by default.

The communication method involved in the embodiment of the present disclosure may include at least one of S501B to S503B. For example, S501B may be implemented as an independent embodiment, S502B may be implemented as an independent embodiment, and S503B may be implemented as an independent embodiment, but are not limited thereto.

In some embodiments, S501B and S503B are optional, and one or more of these steps may be omitted or replaced in different embodiments.

To facilitate understanding of the embodiments of the present disclosure, the following exemplary embodiments are provided.

If the policy control request trigger is met, SMF can initiate the session management (SM) policy association modification process.

In one possible implementation, a policy control request trigger may be a change in the availability of a PDU set process. The SMF determines that the policy control request trigger is satisfied and may initiate an SM policy association modification process, such as sending an event notification report of a change in the availability of a PDU set process to the PCF.

In another possible implementation, the policy control request trigger may be a PDU set processing support status change. The SMF determines that the policy control request trigger is satisfied and may initiate an SM policy association modification process, for example, by sending an event notification report of a PDU set processing support status change to the PCF.

It can be understood that if the policy control request trigger is met, the second network element can initiate a session management (Session Management, SM) policy association modification process, wherein the first subscription event notification is related to the policy control request trigger, and the second network element receives the first subscription event notification sent by the first network element, which can be used as a condition for satisfying the policy control request trigger.

Exemplarily, in the case where the first subscription event notification is used to obtain the support status information of the PDU set processing, the second network element receives the first subscription event notification sent by the first network element and can determine that the policy control request trigger is satisfied, and then determine to execute the acquisition of the support status information of the PDU set processing.

Exemplarily, when the first subscription event notification is used to obtain PDU set support status change information, the second network element receives the first subscription event notification sent by the first network element and can determine that when the PDU set support status changes, the policy control request trigger is satisfied, and then determines to execute the acquisition of the support status information of the PDU set processing.

Exemplarily, as shown in Table 1 above, access is made to an independent policy control request trigger associated with the SMF.

In an exemplary embodiment, as shown in FIG6A , the first network element is a PCF, the second network element is an SMF, the third network element is an AF, and the fourth network element is a RAN or a UPF.

If the policy control request trigger is met, the SMF can initiate the SM policy association modification process. The SMF sends the first message to the PCF (event notification report of PDU set processing availability change or support status change (e.g. PDU set processing availability/support change))

As shown in FIG6A , for local guided roaming, the interaction with the home public land mobile network (HPLMN) is not used (e.g., step 2). In local guided roaming, the visited-PCF (V-PCF) interacts with the UDR of the visited public land mobile network (VPLMN).

1. When the policy control request triggering conditions are met, SMF requests to update (Npcf session management (SM) policy control update (Npcf_SMPolicyControl_update)) SM policy association, and provides information about the conditions that have been met, and sends a first message to PCF.

In some embodiments, before the SMF sends the first message to the PCF, the SMF sends a second subscription event notification (an event notification report of a subscription PDU Set processing availability change or a support status change) to the RAN or UPF; (the event notification can be that the SMF subscription takes effect, or that the system default setting is always effective. If the default setting is always effective, the SMF does not need to actively subscribe, and the event is always valid during the session life cycle);

When SMF receives the third message sent by RAN or UPF (i.e., PDU Set processing availability change or support status change event report), it sends it to PCF to trigger the session management policy creation or modification process.

2. When the AF has subscribed to an event that is satisfied due to a report from the SMF, the PCF reports the event to the AF or the Time Sensitive Communication and Time Synchronization Function (TSCTSF) by calling the Npcf_PolicyAuthorization_Notify service operation and sends a second message to the AF.

If PCF initiates an availability change subscription based on receiving a subscription request from AF, after receiving the first message from SMF (PDU Set processing availability change or supporting status change event report), PCF sends the second message (i.e., PDU Set processing availability change or supporting status change event report) to AF.

3. If the PCF determines that a change to the policy counter status report is required, it may use the initial, intermediate, or final spending limit report retrieval process to change the subscribed policy counter list.

4. PCF makes a policy decision: PCF may determine that updated or new policy information needs to be sent to SMF, that is, PCF may determine PCC rules based on the first message.

Furthermore, after receiving the event report of PDU Set processing availability change or support status change from SMF, PCF generates or updates PCC rules, initiates the session modification process, and carries the updated QoS policy to SMF.

If the SMF reports the cumulative usage of the PDU session in step 1, the PCF deducts this value from the remaining allowed usage of the subscriber, DNN and S-NSAI in the UDR by calling the Nudr_DM_Update(subscriber permanent identifier (SUPI), downlink data notification (DDN), Single Network Slice Selection Assistance information (S-NSSAI), Policy data, Remaining allowed usage data, Update data) service operation.

If the SMF reported the cumulative usage of MK in step 1, the PCF deducts this value from the remaining allowed usage of MK in the UDR by calling the Nudr_DM_Update(SUPI, DNN, s-NSSAI, Policy Data, Remaining Allowed Usage Data, Update Data (includes MK)) service operation.

When a new PCF instance is selected in step 1, the new PCF should call the Nbsf_Management_Update service operation to update the binding information in the Bootstrapping Server Function (BSF).

In non-roaming situations, PCF can subscribe to analytics from the Network Data Analytic Function (NWDAF).

In home-routed roaming scenarios, the H-PCF ensures that the QoS constraints provided by the VPLMN are taken into account.

It should be noted that for local guided roaming, the PDU session policy control subscription information and the remaining allowed use subscription information for monitoring control are not available in the V-UDR, and the V-PCF uses the locally configured information according to the roaming agreement with the HPLMN operator.

5. The PCF replies with an Npcf_SMPolicyControl_Update response, i.e., sends the PCC rules to the SMF, which contains the updated policy information about the PDU session determined in step 4.

In an exemplary embodiment, as shown in FIG. 6B , an AF session is set up using the required QoS procedures.

1. AF sends the PDU set handling availability/support changes to 5GC (NEF/PCF). AF can provide the PDU set handling availability/support changes to NEF/PCF during the AF QoS request/update process.

Alternatively, it may be indicated which NF (e.g. RAN or UPF) will send the report, and how the report is to be sent to the AF respectively (via SMF/PCF/AF (directly or via NEF), via UPF/SMF/PCF/AF (directly or via NEF), via UPF/AF (directly or via NEF)).

Optionally, it carries XRM service information, identifies the XRM service data stream or data stream group (for example, a multi-mode service ID), Terminal address/terminal identifier, AF identifier application ID, flow description, DNN, s-NSSAI, QoS parameters and other corresponding information. Here, the multi-mode service ID can be used to identify all flows in the XRM service group.

2. NEF authorizes AF request. If it is an untrusted AF, the AF request is sent to PCF through NEF. (Optionally, NEF performs relevant mappings, including mapping of XRM service identifier (AF-Service-Identifier) to DNN and S-NSSAI, mapping of external application to CN application identifier; and mapping of external UE identifier to UE identifier within CN based on UDM contract information (such as SUPI), as well as mapping of external to internal XRM service group identifier according to UDM contract information).

3. The NEF authorizes the AF request and determines whether to call the TSCTSF or contact the PCF directly based on the parameters provided by the AF. (These signaling steps are used to set up an AF session with the required QoS procedures.) The PCF receives the attributes provided by the AF from the NEF or TSCTSF.

NEF triggers Npcf_PolicyAuthorization_Create request and sends AF request to PCF, carrying QoS requirement information for PCF policy decision. The message carries the PDU set of processing availability/support changes of the corresponding SDF.

4. PCF makes policy decisions. PCF may determine that updated or new policy information needs to be sent to SMF.

PCF considers the PDU set that handles availability/support changes to determine the PCC rules. PCF sends the PDU set that handles availability/support changes to SMF to subscribe to the trigger report.

5. PCF responds to NEF with Npcf_Policy Authorization_Create response.

6. NEF sends Nnef_AFsessionWithQoS_Create response message to AF, carrying Result, informing whether the request is authorized.

7. PCF initiates SM policy association modification request to SMF (processing availability/support changed PDU set).

PCF subscribes to SMF for event notifications of PDU Set processing availability (or change) or support status (or change). The event subscription notification is used to obtain PDU Set processing availability or support status information or change information; the event notification may be related to a policy control request trigger.

Furthermore, the event notification may be effective when the PCF subscription is made, or the system default setting may always be effective (in this case, the PCF does not need to actively subscribe, and the event is always valid during the life cycle of the session).

Furthermore, based on the provisions of AF/NEF and/or operator policies (such as local or OAM configuration), PCF subscribes to the event notification of PDU Set processing availability change or support status change from SMF. If PCF initiates availability change subscription based on the provisions of AF/NEF (PCF receives a subscription request from AF), after PCF receives the event report of PDU Set processing availability change or support status change from SMF, it sends the event report of PDU Set processing availability change or support status change to AF.

Furthermore, after receiving the event report of PDU Set processing availability change or support status change from SMF, PCF generates or updates PCC rules, initiates the session modification process, and carries the updated QoS policy to SMF.

8. SMF replies to PCF with an SM policy association modification response.

9. SMF initiates an N4 session modification request to UPF (to handle availability/support changed PDU set).

SMF subscribes to PDU Set from RAN or UPF to handle event notification reports on availability changes or support status changes; (the event notification can be when SMF subscription takes effect, or when the system default setting is always in effect. If the default setting is always in effect, SMF does not need to actively subscribe, and the event remains valid during the life cycle of the session).

10. UPF responds to SMF.

11. For the modification of SMF request, SMF calls Namf_Communication_N1N2MessageTransfer([N2SM information](PDU session ID, QoS flow ID (QFI), QoS profile), N1SM container).

12. AMF can send N2 ([SM information received by N2 from SMF], NAS message (PDU session ID, N1SM container (PDU session modification command)) message to (R)AN.

SMF subscribes to PDU Set from RAN or UPF to handle event notification reports on availability changes or support status changes; (the event notification can be when SMF subscription takes effect, or when the system default setting is always in effect. If the default setting is always in effect, SMF does not need to actively subscribe, and the event remains valid during the life cycle of the session).

14. The (R)AN may confirm the N2PDU session request by sending an N2PDU session confirm message to the AMF.

15. AMF forwards the N2SM information received from AN to SMF through the Nsmf_PDUSession_UpdateSMContext service operation.

16. SMF replies with a Nsmf_PDUSession_UpdateSMContext response.

17-18. SMF can update the N4 session of UPF involved in the PDU session modification by sending an N4 session modification request message to UPF.

UPF/RAN performs event monitoring and sends a monitoring report to SMF after receiving the subscribed event change:

UPF/RAN:

When the PDU Set processing availability/support state capability/status of the RAN or UPF changes (eg from not supported to supported, or from supported to not supported), the RAN or UPF sends this report to the SMF, carrying the PDU Set processing availability/support state capability/status change (and or carrying the PDU Set processing support state, which indicates the support state of the current PDU Set processing of the NF (RAN/UPF). Support status, supported or not supported);

Furthermore, the RAN or UPF PDU set processing capability or status change may be at least one of the following: RAN or UPF switching, the PDU set processing capability of the new RAN or UPF is different from that of the RAN or UPF before the change (e.g. after the switching process); or the RAN or UPF remains unchanged, and the PDU set processing capability/status changes (e.g. based on OAM configuration triggering, or other event triggering, resulting in PDU set processing capability/status change, supported/not supported, such as triggering based on time window, busy and idle time, triggering based on QoS notification control and other related network status events, etc.)

In an exemplary embodiment, as shown in FIG6C , the PDU session modification process.

2. SMF may need to report some subscribed events to PCF by executing the SM policy association modification process initiated by SMF. (For example, the event notification of PDU Set processing availability (or change) or support status (or change) in Figure 6A; Optionally, the notification report of SMF can trigger PCF to initiate session modification, update the corresponding PCC rules and QoS policy information, and send it to SMF and UPF/RAN.

The remaining steps:

- The rest of the steps in the session modification process can be done according to the session creation process of related technologies;

-Event notifications involving PDU Set processing availability (or change) or support status (or change) (e.g., subscription, monitoring, reporting, and related descriptions of PDU Set processing availability/support changes, as described in Figures 6A and 6B).

The embodiments of the present disclosure also propose a device for implementing any of the above methods. For example, a device is proposed, including units or modules for implementing each step performed by a network device (such as a first network element, a second network element, a third network element, a fourth network element, etc.) in any of the above methods.

It should be understood that the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, instructions are stored in the memory, and the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device. Alternatively, the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits. The hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in the form of hardware circuits.

In the disclosed embodiments, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and execution capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.

Fig. 7A is a schematic diagram of the structure of a first network element proposed in an embodiment of the present disclosure. As shown in Fig. 7A, the first network element 10 may include: at least one of a transceiver module 11, a processing module 12, and the like.

In some embodiments, the transceiver module 11 is used to receive a first message sent by a second network element, wherein the first message is used to indicate capability information of PDUset processing; and the processing module 12 is used to determine a PCC rule based on the first message.

The transceiver module 11 is used to execute at least one of the communication steps such as sending and/or receiving (for example, S201 to S210, but not limited thereto) executed by the first network element 10 in any of the above methods, which will not be described in detail here. Optionally, the processing module 22 is used to execute at least one of the other steps (for example, S201 to S210, but not limited thereto) executed by the first network element 10 in any of the above methods, which will not be described in detail here.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

In some embodiments, the processing module can be a module or include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be replaced with the processor.

Fig. 7B is a schematic diagram of the structure of the second network element proposed in the embodiment of the present disclosure. As shown in Fig. 7B, the second network element 20 may include: at least one of a transceiver module 21, a processing module 22, and the like.

In some embodiments, the above-mentioned transceiver module 21 is used to send a first message to the first network element, wherein the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine PCC rules.

The transceiver module 21 is used to execute at least one of the communication steps such as sending and/or receiving (for example, S201 to S210, but not limited thereto) executed by the second network element 20 in any of the above methods, which will not be described in detail here. Optionally, the processing module 22 is used to execute at least one of the other steps (for example, S201 to S210, but not limited thereto) executed by the second network element 20 in any of the above methods, which will not be described in detail here.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

In some embodiments, the processing module can be a module or include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be replaced with the processor.

Fig. 7C is a schematic diagram of the structure of the fourth network element proposed in the embodiment of the present disclosure. As shown in Fig. 7C, the fourth network element 30 may include: at least one of a transceiver module 31, a processing module 32, and the like.

In some embodiments, the above-mentioned transceiver module 31 is used to send a third message to the second network element, wherein the third message is used to indicate capability information of PDU set processing, and the third message is used for the second network element to send a first message to the first network element, and the first message is used to indicate capability information of PDU set processing, and the first message is used for the first network element to determine PCC rules.

The transceiver module 31 is used to execute at least one of the communication steps such as sending and/or receiving (for example, S201 to S210, but not limited thereto) executed by the fourth network element 30 in any of the above methods, which will not be described in detail here. Optionally, the processing module 32 is used to execute at least one of the other steps (for example, S201 to S210, but not limited thereto) executed by the fourth network element 30 in any of the above methods, which will not be described in detail here.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

In some embodiments, the processing module can be a module or include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be replaced with the processor.

8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. The communication device 8100 may be a first network element, a second network element, or a fourth network element, or may be a chip, a chip system, or a processor that supports the first network element, the second network element, or the fourth network element to implement any of the above methods. The communication device 8100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

As shown in FIG8A , the communication device 8100 includes one or more processors 8101. The processor 8101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute the program, and process the data of the program. Optionally, the communication device 8100 is used to execute any of the above methods. Optionally, one or more processors 8101 are used to call instructions so that the communication device 8100 executes any of the above methods.

In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, S201 to S210, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, S201 to S210, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated together. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc. may be replaced with each other, the terms transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Optionally, all or part of the memories 8103 may also be outside the communication device 8100. In an optional embodiment, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 may be used to receive data from the memory 8102 or other devices, and may be used to send data to the memory 8102 or other devices. For example, the interface circuit 8104 may read the data stored in the memory 8102 and send the data to the processor 8101.

The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

FIG8B is a schematic diagram of the structure of a chip 8200 proposed in an embodiment of the present disclosure. The communication device 8100 may be a chip or a chip system. For the situation of the system, reference can be made to the structural schematic diagram of chip 8200 shown in FIG8B , but the present invention is not limited thereto.

The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can be interchangeable. In some embodiments, the chip 8200 further includes one or more memories 8203 for storing data. Optionally, all or part of the memory 8203 can be outside the chip 8200. Optionally, the interface circuit 8202 is connected to the memory 8203, and the interface circuit 8202 can be used to receive data from the memory 8203 or other devices, and the interface circuit 8202 can be used to send data to the memory 8203 or other devices. For example, the interface circuit 8202 can read the data stored in the memory 8203 and send the data to the processor 8201.

In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, S201 to S210, but not limited thereto). The interface circuit 8202 performs the communication steps such as sending and/or receiving in the above method, for example, means that the interface circuit 8202 performs data interaction between the processor 8201, the chip 8200, the memory 8203, or the transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps (for example, S201 to S210, but not limited thereto).

The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 8100, the communication device 8100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.

The present disclosure also proposes a program product, which, when executed by the communication device 8100, enables the communication device 8100 to execute any of the above methods. Optionally, the program product is a computer program product.

The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims (32)

A rule generation method, characterized in that the method is executed by a first network element and includes: Receiving a first message sent by a second network element, wherein the first message is used to indicate capability information of a protocol data unit PDU set processing; Based on the first message, a policy and charging control (PCC) rule is determined. The method according to claim 1, wherein the capability information processed by the PDU set includes at least one of the following: Support status of PDU set processing; Whether the support status of PDU set processing has changed. The method according to claim 1 or 2, characterized in that the method further comprises: Send the PCC rule to the second network element. The method according to any one of claims 1 to 3, characterized in that the method further comprises: Initiate a session modification process; or Initiate the session management policy association modification process. The method according to any one of claims 1 to 4, characterized in that the method further comprises: Send a first subscription event notification to the second network element, wherein the first subscription event notification is used to obtain capability information of the PDU set processing. The method as claimed in claim 5 is characterized in that the first subscription event notification is related to a policy control request trigger. The method according to claim 5 or 6, characterized in that the sending the first subscription event notification to the second network element comprises: sending the first subscription event notification to the second network element according to local configuration; or The first subscription event notification is sent to the second network element according to the operation management and maintenance (OAM) configuration. The method according to claim 5 or 6, characterized in that the method further comprises: Receive a subscription request sent by a third network element, wherein the subscription request is used to request capability information of PDU set processing. The method according to any one of claims 1 to 8, characterized in that the method further comprises: A second message is sent to a third network element, wherein the second message is used to indicate capability information of PDU set processing. The method according to any one of claims 1 to 9, wherein the PCC rule includes a first PCC rule generated by the first network element, and the determining the PCC rule based on the first message includes: determining that the first message is used to indicate support for PDU set processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining the first PCC rule; or determining that the first message is used to indicate support for PDU processing, and currently no PCC rule exists, determining to generate a PCC rule, and determining the first PCC rule; or determining that the first message is used to indicate that the support status of the PDU set processing is changed from not supported to supported, and no PCC rule currently exists, determining to generate a PCC rule, and determining the first PCC rule; or determining that the first message is used to indicate that the support status of the PDU set processing is changed from supported to not supported, and that no PCC rule currently exists, determining to generate a PCC rule, and determining the first PCC rule; or determining that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and that no PCC rule currently exists, determining to generate a PCC rule, and determining the first PCC rule; or Determine that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and that no PCC rules currently exist, determine to generate PCC rules, and determine the first PCC rules. The method according to any one of claims 1 to 9, wherein the PCC rule includes a second PCC rule updated by the first network element, and the determining the PCC rule based on the first message includes: determining that the first message is used to indicate support for PDU set processing, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining the second PCC rule; or determining that the first message is used to indicate support for PDU processing, and that a current PCC rule is generated based on a PDU set, determining to update the current PCC rule, and determining the second PCC rule; or determining that the first message is used to indicate that the support status of PDU set processing is changed from not supported to supported, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining the second PCC rule; or determining that the first message is used to indicate that the support status of the PDU set processing is changed from supported to not supported, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining the second PCC rule; or determining that the first message is used to indicate a change from supporting PDU processing to supporting PDU set processing, and the current PCC rule is generated based on the PDU, determining to update the current PCC rule, and determining the second PCC rule; or Determine that the first message is used to indicate that support for PDU set processing is changed to support for PDU processing, and the current PCC rule is generated based on the PDU set, determine to update the current PCC rule, and determine the second PCC rule. A rule generation method, characterized in that the method is executed by a second network element, comprising: A first message is sent to a first network element, wherein the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine a PCC rule. The method according to claim 12, wherein the capability information processed by the PDU set includes at least one of the following: Support status of PDU set processing; Whether the support status of PDU set processing has changed. The method according to claim 12 or 13, characterized in that the method further comprises: Receive a first subscription event notification sent by a first network element, wherein the first subscription event notification is used to obtain capability information of PDU set processing. The method according to any one of claims 12 to 14, characterized in that the method further comprises: receiving a third message sent by a fourth network element, wherein the third message is used to indicate capability information of PDU set processing; or The third message sent by the fourth network element is received through the access and mobility management function AMF, wherein the third message is used to indicate capability information of PDU set processing. The method according to claim 15, characterized in that the method further comprises: A second subscription event notification is sent to the fourth network element, wherein the second subscription event notification is used to obtain capability information of PDU set processing. The method according to any one of claims 12 to 16, characterized in that the method further comprises: Initiate the session management policy creation process, or initiate the session management policy modification process. The method according to any one of claims 12 to 17, characterized in that the method further comprises: receiving the PCC rule sent by the first network element; According to the PCC rule, a quality of service QoS rule is determined. The method according to claim 18, characterized in that the method further comprises: The QoS rule is sent to the fourth network element. A rule generation method, characterized in that the method is executed by a fourth network element, comprising: Sending a third message to the second network element; or Sending the third message to the second network element through the AMF; Among them, the third message is used to indicate the capability information of PDU set processing, the third message is used by the second network element to send a first message to the first network element, the first message is used to indicate the capability information of PDU set processing, and the first message is used by the first network element to determine the PCC rule. The method of claim 20, wherein the capability information processed by the PDU set includes at least one of the following: Support status of PDU set processing; Whether the support status of PDU set processing has changed. The method according to claim 20 or 21, characterized in that the method further comprises: Receive a second subscription event notification sent by the second network element, wherein the second subscription event notification is used to obtain capability information of PDU set processing. The method according to any one of claims 20 to 22, wherein the sending a third message to the second network element comprises: Determining that a specified condition is met, sending the third message to the second network element; The specified conditions include at least one of the following: A network element switching occurs, and the fourth network element is a switched network element; PDU set processing capability changes; Changes in PDU set processing capabilities caused by OAM configuration triggers; Changes in PDU set processing capabilities caused by triggering busy and idle time windows; Changes in PDU set processing capabilities caused by QoS notification control triggers; PDU set handles state changes; PDU set processing status changes caused by OAM configuration triggers; PDU set processing status change caused by triggering when the time window is busy or idle; PDU set processing state changes caused by QoS notification control triggering. A rule generation method, characterized in that the method comprises: The second network element sends a first message to the first network element, wherein the first message is used to indicate capability information of PDUset processing; The first network element receives a first message sent by the second network element; The first network element determines a PCC rule based on the first message. A first network element, characterized by comprising: A transceiver module, configured to receive a first message sent by a second network element, wherein the first message is used to indicate capability information processed by a PDUset; The processing module is configured to determine a PCC rule based on the first message. A second network element, characterized by comprising: A transceiver module is used to send a first message to a first network element, wherein the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine a PCC rule. A fourth network element, characterized by comprising: A transceiver module is used to send a third message to a second network element, wherein the third message is used to indicate capability information of PDU set processing, and the third message is used by the second network element to send a first message to a first network element, and the first message is used to indicate capability information of PDU set processing, and the first message is used by the first network element to determine PCC rules. A first network element, characterized by comprising: one or more processors; The first network element is used to execute the method according to any one of claims 1 to 11. A second network element, characterized by comprising: one or more processors; The second network element is used to execute the method according to any one of claims 12 to 19. A fourth network element, characterized by comprising: one or more processors; The fourth network element is used to execute the method described in any one of claims 20 to 23. A communication system, characterized in that it includes a first network element, a second network element, and a fourth network element, wherein the first network element is configured to implement the method described in any one of claims 1 to 11, the second network element is configured to implement the method described in any one of claims 12 to 19, and the fourth network element is configured to implement the method described in any one of claims 20 to 23. A storage medium storing instructions, characterized in that when the instructions are executed on a communication device, the communication device executes a method as described in any one of claims 1 to 11, 12 to 19, and 20 to 23.