CN111586757B

CN111586757B - PDU session establishment method and device

Info

Publication number: CN111586757B
Application number: CN202010456581.5A
Authority: CN
Inventors: 祝定静
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2023-04-18
Anticipated expiration: 2040-05-26
Also published as: CN111586757A

Abstract

The embodiment of the application provides a method and equipment for establishing a PDU session, wherein network equipment receives a PDU session establishment request sent by UE, the PDU session establishment request comprises a first maximum number of QoS flows which can be currently supported by the UE and a second maximum number of QoS rules, and the network equipment configures the QoS flows of which the number is less than or equal to the first maximum number and the QoS rules of which the number is less than or equal to the second maximum number for the UE when the PDU session is established. According to the method and the device, the first maximum number of the QoS flows and the second maximum number of the QoS rules which can be currently supported by the UE are carried in the PDU session establishment request sent by the UE, so that the network equipment can clearly establish the PDU session establishment capability of the UE, the QoS flows and the QoS rules which do not exceed the PDU session establishment capability can be configured for the UE, the probability of PDU session establishment failure can be effectively reduced, and user experience is improved.

Description

PDU session establishment method and device

Technical Field

The embodiment of the application relates to the technical field of wireless communication, in particular to a Protocol Data Unit (PDU) session establishment method and device.

Background

In a New Radio (NR) system, a Session Management Function (SMF) is used to manage a Protocol Data Unit (PDU) Session of a User Equipment (UE), and to establish a packet detection and forwarding rule for a User Plane Function (UPF).

The UE establishes a PDU session with a Data Network (DN) through the UPF, and the PDU session provides a PDU connection service between the UE and a DN Network element.

However, when the UE requests to establish the PDU session, the creation of Quality of Service (QoS) flows and QoS rules completely depends on the data network, so there may be a case that the QoS flows and/or QoS rules configured by the data network for the UE exceed the maximum supportable QoS flow number and/or QoS rule number of the UE, which may result in a failure of PDU session establishment. Namely, the failure rate is high when the existing PDU session is established, and the user experience is easily influenced.

Disclosure of Invention

The embodiment of the application provides a PDU session establishment method and device, and can solve the problems that in the prior art, PDU session establishment failure rate is high, and user experience is affected.

In a first aspect, an embodiment of the present application provides a PDU session establishment method, where the method includes:

the UE determines a first maximum number of the current supportable QoS flows and a second maximum number of the QoS rules;

and the UE sends a first PDU session establishment request to network equipment, wherein the first PDU session establishment request comprises the first maximum number and the second maximum number.

In one possible embodiment, the UE determining a first maximum number of currently supportable QoS flows and a second maximum number of QoS rules includes:

acquiring a first number of QoS flows established by the UE and a second number of QoS rules established by the UE;

determining a third maximum number of QoS flows supportable by the UE and a fourth maximum number of QoS rules supportable by the UE based on the performance parameters of the UE;

determining a third number of QoS flows which can be established currently and remain by the UE according to the third maximum number and the first number, and determining a fourth number of QoS rules which can be established currently and remain by the UE according to the fourth maximum number and the second number;

and determining the first maximum number according to the third number and the fifth maximum number of the QoS flows supportable by each PDU session, and determining the second maximum number according to the fourth number and the sixth maximum number of the QoS rules supportable by each PDU session.

In a possible embodiment, the determining the first maximum number according to the third number and a fifth maximum number of QoS flows supportable by each PDU session includes:

determining a minimum value of the third number and the fifth maximum number as the first maximum number;

determining the second maximum number according to the fourth number and a sixth maximum number of QoS rules supportable by each PDU session, including:

determining a minimum value of the fourth number and the sixth maximum number as the second maximum number.

In one possible embodiment, after the UE sends the first PDU session setup request to the network device, the method further includes:

the UE receives a PDU session establishment rejection message fed back by the network equipment, wherein the PDU session establishment rejection message comprises a fifth number of QoS flows and/or a sixth number of QoS rules determined by the network equipment for the UE, the fifth number is greater than the first maximum number, and the sixth number is greater than the second maximum number;

the UE releases the PDU session without service in the established PDU session according to the fifth number and/or the sixth number, and sends a second PDU session establishment request to the network equipment, wherein the second PDU session establishment request comprises the fifth number and/or the sixth number;

or, the UE determines that the PDU session establishment fails according to the fifth number and/or the sixth number, and reports a PDU session establishment failure response to the network device.

In a second aspect, an embodiment of the present application provides a PDU session establishment method, where the method includes:

receiving a first PDU session establishment request sent by UE, wherein the first PDU session establishment request comprises a first maximum number of QoS flows which can be currently supported by the UE and a second maximum number of QoS rules;

judging whether to accept the first PDU session establishment request or not according to the first maximum number and the second maximum number;

when the first PDU session establishment request is accepted, configuring QoS flows and QoS rules for the UE according to the first maximum number and the second maximum number, and sending a response message of successful PDU session establishment to the UE, wherein the number of the QoS flows configured for the UE is less than or equal to the first maximum number, and the number of the QoS rules configured for the UE is less than or equal to the second maximum number;

when the first PDU session establishment request is not accepted, adjusting the first maximum number to be a fifth number, and/or adjusting the second maximum number to be a sixth number, and sending a PDU session establishment rejection message to the UE, wherein the PDU session establishment rejection message comprises the fifth number of QoS flows and/or the sixth number of QoS rules, the fifth number is greater than the first maximum number, and the sixth number is greater than the second maximum number.

In a possible embodiment, after sending the PDU session setup reject message to the UE, the method further includes:

receiving a second PDU session establishment request sent by the UE, wherein the second PDU session establishment request comprises the fifth number of QoS flows and/or the sixth number of QoS rules;

and establishing the PDU session based on the second PDU session establishment request.

In a third aspect, an embodiment of the present application provides a PDU session establishment apparatus, where the apparatus includes:

the determining module is used for determining a first maximum number of QoS flows which can be currently supported by the UE and a second maximum number of QoS rules;

a sending module, configured to send a first PDU session establishment request to a network device, where the first PDU session establishment request includes the first maximum number and the second maximum number.

In a fourth aspect, an embodiment of the present application provides a PDU session establishment apparatus, where the apparatus includes:

a receiving module, configured to receive a first protocol data unit PDU session establishment request sent by a user equipment UE, where the first PDU session establishment request includes a first maximum number of QoS flows that can be currently supported by the UE and a second maximum number of QoS rules

A configuration response module, configured to determine whether to accept the first PDU session establishment request according to the first maximum number and the second maximum number;

when the first PDU session establishment request is received, configuring the number of QoS flows and the number of QoS rules for the UE according to the first maximum number and the second maximum number, and sending a response message of successful PDU session establishment to the UE, wherein the number of the QoS flows configured for the UE is less than or equal to the first maximum number, and the number of the QoS rules configured for the UE is less than or equal to the second maximum number;

In a fifth aspect, an embodiment of the present application provides a user equipment, which includes at least one processor and a memory, where the memory stores computer-executable instructions, and the at least one processor executes the computer-executable instructions stored in the memory, so that the at least one processor executes the PDU session establishment method according to the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, including: at least one processor and a memory, the memory storing computer-executable instructions, the at least one processor executing the memory-stored computer-executable instructions to cause the at least one processor to perform the PDU session establishment method according to the second aspect.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer executes instructions, and when a processor executes the computer executes the instructions, the PDU session establishment method according to the first aspect is implemented.

In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and when the processor executes the computer-executable instructions, the PDU session establishment method according to the second aspect is implemented.

The embodiment of the application provides a method and equipment for establishing a PDU session, wherein network equipment receives a PDU session establishment request sent by UE, the PDU session establishment request comprises a first maximum number of QoS flows which can be currently supported by the UE and a second maximum number of QoS rules, and the network equipment configures the QoS flows of which the number is less than or equal to the first maximum number and the QoS rules of which the number is less than or equal to the second maximum number for the UE when the PDU session is established. In the embodiment of the application, the PDU session establishment request carries the first maximum number of the QoS flows and the second maximum number of the QoS rules which can be currently supported by the UE, so that the network equipment can clearly establish the PDU session establishment capability of the UE, the QoS flows and the QoS rules which do not exceed the PDU session establishment capability of the UE can be distributed to the UE, the PDU session establishment failure caused by the fact that the QoS flows and/or the QoS rules configured by the UE exceed the PDU session establishment capability of the UE is avoided, the probability of the PDU session establishment failure can be effectively reduced, and the user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a block diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a PDU session establishment method provided in an embodiment of the present application;

FIG. 3 is a schematic flowchart of a refinement step of step S201 in the embodiment shown in FIG. 2 in the present application;

fig. 4 is an interaction flow diagram of a PDU session establishment method provided in an embodiment of the present application;

fig. 5 is a first schematic diagram illustrating program modules of a PDU session setup apparatus according to an embodiment of the present application;

fig. 6 is a schematic diagram of a program module of a PDU session setup device according to an embodiment of the present application;

fig. 7 is a schematic diagram of a structure of an electronic device provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application can be applied to various communication systems, such as: an Advanced long term evolution (LTE-a) System, a New Radio (NR) System, an evolution System of the NR System, an LTE (LTE-based access to unlicensed spectrum, LTE-U) System on an unlicensed spectrum, an NR (NR-based access to unlicensed spectrum, NR-U) System on an unlicensed spectrum, a Universal Mobile Telecommunications System (UMTS), a Wireless Local Area Network (WLAN), a Wireless Fidelity (WiFi), a next generation communication System, or other communication systems.

Generally, the conventional Communication system supports a limited number of connections and is easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, device-to-Device (D2D) Communication, machine-to-Machine (M2M) Communication, machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

The application spectrum is not limited in the embodiments of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum, and may also be applied to an unlicensed spectrum.

Referring to fig. 1, fig. 1 is a schematic diagram of an architecture of a wireless communication system according to an embodiment of the present disclosure. The wireless communication system provided by the present embodiment includes a UE101 and a network device 102.

Alternatively, the UE101 may refer to various forms of user equipment, access terminal, subscriber unit, subscriber station, mobile Station (MS), remote station, remote terminal, mobile device, terminal device (terminal equipment), wireless communication device, user agent, or user device. The UE may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment of the application as long as the UE101 can wirelessly communicate with the Network device 102.

Optionally, the Network device 102, i.e. a public mobile communication Network device, is an interface device for the UE101 to Access the internet, and is also a form of a Radio Station, and refers to a Radio transceiver Station for performing information transmission with the UE101 in a certain Radio coverage area, and includes a Base Station (BS), which may also be referred to as a Base Station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a Base Station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a Base Station function in a 3G network includes a node B (NodeB), a device providing a Base Station function in a 4G network includes an Evolved node B (eNB), and in a Wireless Local Area Network (WLAN), the device providing a Base Station function is an Access Point (AP), a device providing a Base Station function in a 5G NR, a gNB (ng-eNB) that continues to evolve, where the gNB and the UE communicate with each other by using an NR technology, and the ng-eNB and the UE communicate with each other by using an Evolved Universal Terrestrial Radio Access network (E-eNB) technology, and both the gNB and the ng-eNB may be connected to the 5G core network. The network device 102 in the embodiment of the present application also includes a device that provides a base station function in a future new communication system, and the like.

In the embodiment of the application, when a PDU session is established, the UE negotiates with the network device, so that the network device can obtain a first maximum number of Qos streams supportable by the UE and a second maximum number of Qos rules supportable by the UE, and determines whether to accept the PDU session request based on the first maximum number and the second maximum number, and establishes the PDU session under the condition of acceptance, so as to improve the probability of successful establishment of the PDU session and improve user experience. The following describes the procedure of the UE negotiating with the network device to establish the PDU session in detail.

Referring to fig. 2, fig. 2 is a schematic flowchart of a PDU session establishment method provided in an embodiment of the present application, where the method includes:

s201, the UE determines a first maximum number of the current supportable QoS flows and a second maximum number of the QoS rules.

S202, UE sends a first Protocol Data Unit (PDU) session establishment request to network equipment, wherein the first PDU session establishment request comprises a first maximum number and a second maximum number.

In this embodiment, before sending the PDU session setup request, the UE may determine a first maximum number of currently supportable QoS flows and a second maximum number of currently supportable QoS rules.

Optionally, in a possible implementation manner of the present application, referring to fig. 3, a determination manner of the first maximum number and the second maximum number may refer to fig. 3, where fig. 3 is a schematic flow chart of a step of refining step S201 in the embodiment shown in fig. 2 in the embodiment of the present application, and a content described in step S201 may be refined into the following steps:

s301, acquiring a first number of QoS flows established by the UE and a second number of QoS rules established by the UE.

S302, based on the performance parameters of the UE, determining a third maximum number of QoS flows supportable by the UE and a fourth maximum number of QoS rules supportable by the UE.

S303, determining a third number of QoS flows which can be established currently and remained by the UE according to the third maximum number and the first number, and determining a fourth number of QoS rules which can be established currently and remained by the UE according to the fourth maximum number and the second number.

S304, determining a first maximum number according to the third number and a fifth maximum number of QoS flows supportable by each PDU conversation, and determining a second maximum number according to the fourth number and a sixth maximum number of QoS rules supportable by each PDU conversation.

In this embodiment of the present application, the UE may first determine the number of currently established PDU sessions, then obtain the number of Qos flows configured for each established PDU session and the number of Qos rules configured, and sum the Qos flows configured for each PDU session and the Qos rules, respectively, to obtain a first number of Qos flows established by the UE and a second number of Qos rules established.

It is understood that the maximum number of Qos flows supportable by the UE and the maximum number of Qos rules supportable by the UE are related to the performance of the UE itself, which may include the hardware capability, memory capacity, and the like of the UE, and the UE may determine the third maximum number of Qos flows supportable by the UE and the fourth maximum number of Qos rules supportable based on the performance configured by the UE itself. In another possible implementation manner, considering that the performance parameter of the UE is relatively fixed, the third maximum number of Qos flows that the UE can support and the fourth maximum number of Qos rules that the UE can support may also be preset inside the UE, and when a change in the performance of the UE is detected (for example, the memory capacity is increased or decreased), the third maximum number and the fourth maximum number are updated.

Further, the UE determines a third number of Qos flows that can be currently established remaining by the UE according to the third maximum number and the first number, and determines a fourth number of Qos rules that can be currently established remaining by the UE according to the fourth maximum number and the second number.

And after obtaining the third number and the fourth number, determining the first maximum number according to the third number and a fifth maximum number of Qos flows supportable by each path of PDU session at the UE side, and determining the second maximum number according to the fourth number and a sixth maximum number of Qos rules supportable by each path of PDU session.

In a possible implementation, for the determination of the first maximum number, a third number may be compared with a fifth maximum number, and the minimum of the two values is selected as the first maximum number, for example, when the third number is smaller than the fifth maximum number, the value of the first maximum number is determined to be equal to the third number. For the determination of the second maximum number, the minimum value between the fourth number and the sixth maximum number may be determined as the second maximum number, for example, when the fourth number is greater than the sixth maximum number, the value of the second maximum number is determined to be equal to the sixth maximum number.

It can be understood that, the manner of determining the first maximum number and the second maximum number mainly considers that the first maximum number of Qos flows that can be currently supported by the UE cannot be greater than a third number of Qos flows that can be currently remaining and can be established by the UE, and the first maximum number of Qos flows that can be currently supported by the UE cannot be greater than a fifth maximum number of Qos flows that can be supported by each PDU session, so that a minimum value of the third number and the fifth number is selected as the first maximum number, which enables data provided to the network device to meet current capabilities of the UE when the UE establishes a PDU session, and can effectively avoid a failure in establishing a PDU session. The rule for determining the second maximum number is similar to the rule for determining the first maximum number, and is not described herein again.

Taking the determination manner of the first maximum number as an example, in an example, if based on the performance parameter of the UE, the third maximum number of Qos flows that can be supported by the UE is 210, and the first number of Qos flows that the UE has already established is 130, it may be determined that the third number of Qos flows that can be currently established by the UE is 70, and the fifth maximum number of Qos flows that can be supported by each PDU session is 63, then the minimum value, that is, min [70, 63], is selected as 63, which is the first maximum number of Qos flows that the UE can currently support.

In the embodiment of the present application, by synthesizing the first maximum number of Qos flows already established by the UE and the second number of Qos rules already established, and based on the third maximum number of Qos flows supportable by the UE performance parameter and the fourth maximum number of Qos rules supportable, the determined first maximum number and second maximum number can be less than or equal to the fifth maximum number of Qos flows supportable by the PDU session and the sixth maximum number of Qos rules supportable by the PDU session on the premise that the remaining performance of the UE is met, thereby avoiding failure in establishing the PDU session and improving the success probability.

According to the PDU session establishment method provided by the embodiment of the application, the PDU session establishment request carries the first maximum number of QoS flows and the second maximum number of QoS rules which can be currently supported by the UE, so that the network equipment can determine the PDU session establishment capability of the UE, the QoS flows and the QoS rules which do not exceed the PDU session establishment capability of the UE can be distributed to the UE, the PDU session establishment failure caused by the fact that the QoS flows and/or the QoS rules configured by the UE exceed the PDU session establishment capability of the UE is avoided, the probability of the PDU session establishment failure can be effectively reduced, and the user experience is improved.

Based on the content described in the foregoing embodiments, an embodiment of the present application further provides a PDU session establishment method, which is applied to a network device, and the method includes the following steps:

step a, receiving a first PDU session establishment request sent by UE, wherein the first PDU session establishment request comprises a first maximum number of QoS flows which can be currently supported by the UE and a second maximum number of QoS rules.

B, judging whether to accept the first PDU session establishment request according to the first maximum number and the second maximum number, and executing the step c when accepting the first PDU session establishment request; and d, when the session establishment request of the first PDU is not accepted, executing step d.

And c, configuring the number of QoS flows and the number of QoS rules for the UE according to the first maximum number and the second maximum number, and sending a first response message of successful PDU session establishment to the UE, wherein the number of the QoS flows configured for the UE is less than or equal to the first maximum number, and the number of the QoS rules configured for the UE is less than or equal to the second maximum number.

And d, adjusting the first maximum number to be a fifth number, and/or adjusting the second maximum number to be a sixth number, and sending a PDU session establishment rejection message to the UE, wherein the PDU session establishment rejection message comprises the fifth number of QoS flows and/or the sixth number of QoS rules, the fifth number is greater than the first maximum number, and the sixth number is greater than the second maximum number.

In a possible implementation manner of the present application, after receiving the PDU session setup rejection message fed back by the network device, the UE releases the PDU session without service in the established PDU session according to the fifth number and/or the sixth number, and sends a second PDU session setup request to the network device, where the second PDU session setup request includes the fifth number and/or the sixth number. Or, the UE determines that the PDU session establishment fails according to the fifth number and/or the sixth number, and reports a PDU session establishment failure response to the network device.

Optionally, after the network device sends the PDU session setup reject message to the UE, the method further includes the following steps:

and e, receiving a second PDU session establishment request sent by the UE, wherein the second PDU session establishment request comprises a fifth number of QoS flows and/or a sixth number of QoS rules.

And f, establishing the PDU session based on the second PDU session establishment request.

In another possible implementation manner of the present application, after receiving a first PDU session establishment request sent by a UE, a network device determines whether to accept the first PDU session establishment request according to a first maximum number and a second maximum number carried in the first PDU session establishment request.

The network device may be a data network, and may specifically be a Session Management Function (SMF) network element of the data network. After receiving a first PDU session establishment request sent by the UE, the network device obtains a first maximum number of Qos flows currently supportable by the UE and a second maximum number of Qos rules, where the first maximum number is included in the first PDU session establishment request.

Specifically, the network device determines a target service corresponding to the first PDU session establishment request after establishment, determines the number of Qos streams and the number of Qos rules required by the target service, that is, service requirements of the target service, compares a first maximum number of Qos streams currently supportable by the UE with the number of Qos streams required by the target service, indicates that the number of Qos streams currently supportable by the UE satisfies the service requirements if the first maximum number is greater than or equal to the number of Qos streams required by the target service, and indicates that the number of Qos streams currently supportable by the UE does not satisfy the service requirements if the first maximum number is less than the number of Qos streams required by the target service.

It can be understood that the network device will accept the first PDU session setup request only if the first maximum number is greater than or equal to the number of Qos flows required by the target service, and the second maximum number is greater than or equal to the number of Qos rules required by the target service. For other three cases, for example, if the first maximum number is smaller than the number of Qos flows required by the target service, it indicates that the current performance of the UE cannot meet the service initiation requirement, and at this time, even if the network device tries to establish the PDU session, a situation that the PDU session establishment fails due to the fact that the UE may not support the number of Qos flows corresponding to the service establishment requirement may occur, so that the service cannot be initiated.

For better understanding of the embodiment of the present application, referring to fig. 4, fig. 4 is an interactive flow diagram of a PDU session establishment method provided in the embodiment of the present application, where the method includes:

401. the UE determines a first maximum number of currently supportable QoS flows and a second maximum number of QoS rules.

402. The UE sends a first Protocol Data Unit (PDU) session establishment request to the network equipment, wherein the first PDU session establishment request comprises a first maximum number and a second maximum number.

403. The network equipment judges whether to accept the first PDU session establishment request or not according to the first maximum number and the second maximum number; when accepting the first PDU session establishment request, continue to execute 404.1; when the first PDU session setup request is not accepted 404.2 is performed.

404.1, configuring the number of QoS flows and the number of QoS rules for the UE according to the first maximum number and the second maximum number, and continuing to execute the step 405.1;

405.1, sending a response message of successful PDU session establishment to the UE, and ending the process. The number of the QoS flows configured for the UE is less than or equal to a first maximum number, and the number of the QoS rules configured for the UE is less than or equal to a second maximum number;

in the embodiment of the present application, when the network device receives the first PDU session establishment request, it indicates that the current remaining performance of the UE can meet the requirements of service initiation on QoS flows and QoS rules, and at this time, a PDU session can be successfully established.

404.2, adjusting the first maximum number to be a fifth number, and/or adjusting the second maximum number to be a sixth number; and continues to step 405.2;

405.2, sending a PDU session setup reject message to the UE, where the PDU session setup reject message includes a fifth number of QoS flows and/or a sixth number of QoS rules, the fifth number is greater than the first maximum number, and the sixth number is greater than the second maximum number. Execution continues with 406 through 409.

In this embodiment, when the network device does not accept the first PDU session establishment request, it indicates that the current remaining performance of the UE cannot meet the requirement of service initiation on QoS flows and/or QoS rules, at this time, the network device adjusts the first maximum number to be a fifth number, and/or adjusts the second maximum number to be a sixth number, and sends a PDU session rejection message to the PDU, where the PDU session rejection message includes the fifth number of QoS flows and/or the sixth number of QoS rules, where the fifth number is greater than the first maximum number, and the sixth number is greater than the second maximum number. By carrying the fifth number and/or the sixth number in the PDU session reject message, the UE may be notified of the number of QoS flows and/or the number of QoS rules that it needs to establish the PDU session if necessary.

It can be understood that the PDU session reject message carries the number of parameters that do not satisfy the service requirement. For example, if the first maximum number does not satisfy the service requirement, the adjusted first maximum number, that is, the fifth number, is carried, and if the second maximum number does not satisfy the service requirement, the adjusted second maximum number, that is, the sixth number is carried. And if the first maximum number and the second maximum number do not meet the requirements, carrying a fifth number and a sixth number.

The fifth number may be the number of QoS flows of the service requirement, and the sixth number may be the number of QoS rules of the service requirement.

406. And the UE releases the PDU session without service in the established PDU session according to the fifth number and/or the sixth number contained in the PDU session establishment rejection message.

407. A second PDU session setup request is sent to the network device.

408. And establishing the PDU session based on the second PDU session establishment request.

409. And sending a response message of successful PDU session establishment to the UE.

After receiving the PDU session establishment rejection message fed back by the network device, the UE acquires the fifth number and/or the sixth number included in the PDU session establishment rejection message, and releases the PDU session that has been established without service in the PDU session according to the fifth number and the sixth number, so that the remaining capability of the UE after the release can meet the service requirement. It can be understood that, by releasing the PDU session without service in the established PDU session, on one hand, the current service is not affected, and on the other hand, the performance of the UE can be released, so that the number of QoS flows currently supportable by the UE and the number of QoS rules currently supportable by the UE are increased.

If the PDU session setup rejection message carries a fifth number, the PDU session may be stopped to be released when it is determined that the number of QoS streams currently supportable by the UE is greater than or equal to the fifth number, and if the PDU session setup rejection message carries a sixth number, the PDU session may be stopped to be released when it is determined that the number of QoS rules currently supportable by the UE is greater than or equal to the sixth number, and if the fifth number and the sixth number are carried simultaneously, the PDU session needs to be stopped to be released when it is determined that the number of QoS streams currently supportable by the UE is greater than or equal to the fifth number and the number of QoS rules currently supportable is greater than or equal to the sixth number.

Further, the UE sends a second PDU session establishment request to the network device, where the second PDU session establishment request may include a fifth number and/or a sixth number, and the type of the included parameter is the same as that carried in the PDU session establishment reject message. After receiving the second PDU session establishment request, the network device establishes a PDU session based on the second PDU session establishment request, and sends a response message indicating that the PDU session establishment is successful to the UE.

Or, in a scenario, if there is no PDU session currently performed without service in the established PDU sessions on the UE side, it indicates that there is no PDU session that can be released, or after all PDU sessions performed without service are released, the service requirement still cannot be met, for example, when the fifth number is carried in the PDU session establishment rejection message, the updated first maximum number obtained after the release is still less than the fifth number, and the requirement of the service on the QoS flow cannot be met after the release. At this time, the UE determines that the PDU session establishment fails according to the fifth number and/or the sixth number, and reports a PDU session establishment failure response to the network device.

In the embodiment of the application, a network device receives a PDU session establishment request sent by a UE, where the PDU session establishment request includes a first maximum number of QoS streams currently supportable by the UE and a second maximum number of QoS rules, and the network device configures, when establishing a PDU session, the QoS rules of which the number is less than or equal to the first maximum number of QoS streams and the number is less than or equal to the second maximum number for the UE. In the embodiment of the application, the first maximum number of the QoS flows and the second maximum number of the QoS rules which can be currently supported by the UE are carried in the PDU session establishment request, so that the network equipment can clearly determine the PDU session establishment capability of the UE, the QoS flows and the QoS rules which do not exceed the PDU session establishment capability of the UE can be distributed to the UE, the PDU session establishment failure caused by the fact that the QoS flows and/or the QoS rules configured by the UE exceed the PDU session establishment capability of the UE is avoided, the probability of the PDU session establishment failure can be effectively reduced, and the user experience is improved.

In the embodiment of the application, the UE negotiates with the network equipment about the maximum QoS flow and/or the QoS rule in the PDU session establishment process, so that the network equipment can establish the PDU session according to the actual performance of the UE, the success probability of the PDU session establishment is improved, and the user experience is improved.

Based on the content described in the foregoing embodiments, an apparatus for PDU session establishment is further provided in this embodiment, and is applied to a user equipment. Referring to fig. 5, fig. 5 is a first schematic diagram of program modules of a PDU session setup device provided in an embodiment of the present application, where the PDU session setup device 50 includes:

a determining module 501, configured to determine a first maximum number of QoS streams and a second maximum number of QoS rules that can be currently supported by a UE;

a sending module 502, configured to send a first protocol data unit PDU session establishment request to a network device, where the first PDU session establishment request includes the first maximum number and the second maximum number.

The PDU session establishment device 50 provided in this embodiment of the present application enables the network device to specify the PDU session establishment capability of the UE by carrying the first maximum number of QoS flows and the second maximum number of QoS rules that can be currently supported by the UE in the PDU session establishment request, so that QoS flows and QoS rules that do not exceed the PDU session establishment capability of the UE can be allocated to the UE, thereby avoiding a PDU session establishment failure caused by the QoS flows and/or QoS rules configured by the UE exceeding the PDU session establishment capability of the UE, effectively reducing the probability of the PDU session establishment failure, and improving user experience.

It should be noted that, in the embodiment of the present application, the content specifically executed by the determining module 501 and the sending module 502 may refer to the related content in the embodiments shown in fig. 2 to fig. 4, which is not described herein again.

Based on the content described in the foregoing embodiments, an apparatus for PDU session establishment is further provided in this embodiment, and is applied to a network device. Referring to fig. 6, fig. 6 is a schematic diagram of a second program module of a PDU session setup device provided in this embodiment, where the PDU session setup device 60 includes:

a receiving module 601, configured to receive a first protocol data unit PDU session establishment request sent by a user equipment UE, where the first PDU session establishment request includes a first maximum number of QoS streams that can be currently supported by the UE and a second maximum number of QoS rules.

A configuration response module 602, configured to determine whether to accept the first PDU session establishment request according to the first maximum number and the second maximum number.

And when the first PDU session establishment request is received, configuring the number of QoS flows and the number of QoS rules for the UE according to the first maximum number and the second maximum number, and sending a response message of successful PDU session establishment to the UE, wherein the number of the QoS flows configured for the UE is less than or equal to the first maximum number, and the number of the QoS rules configured for the UE is less than or equal to the second maximum number.

The PDU session establishing apparatus 60 belongs to a network device, and is stored in a storage medium of the network device, and is used for implementing the steps executed by the network device side in the above embodiments.

In the embodiment of the application, the first maximum number of the QoS flows and the second maximum number of the QoS rules which can be currently supported by the UE are carried in the PDU session establishment request, so that the network equipment can clearly determine the PDU session establishment capability of the UE, the QoS flows and the QoS rules which do not exceed the PDU session establishment capability of the UE can be distributed to the UE, the PDU session establishment failure caused by the fact that the QoS flows and/or the QoS rules configured by the UE exceed the PDU session establishment capability of the UE is avoided, the probability of the PDU session establishment failure can be effectively reduced, and the user experience is improved.

Further, based on the content described in the foregoing embodiments, an embodiment of the present application also provides a user equipment, where the user equipment includes at least one processor and a memory; wherein the memory stores computer execution instructions; the at least one processor executes computer execution instructions stored in the memory to implement the steps executed by the user equipment side in the above embodiments, which is not described herein again.

Further, based on the content described in the foregoing embodiments, the present application also provides a network device, where the network device includes at least one processor and a memory; wherein the memory stores computer execution instructions; the at least one processor executes computer execution instructions stored in the memory to implement the steps executed by the network device side in the above embodiments, which is not described herein again.

For better understanding of the embodiment of the present application, referring to fig. 7, fig. 7 is a schematic diagram of a hardware structure of an electronic device according to the embodiment of the present application. The electronic device may be the user device or the network device.

As shown in fig. 7, the electronic apparatus 70 of the present embodiment includes: a processor 701 and a memory 702; wherein:

a memory 702 for storing computer-executable instructions;

the processor 701 is configured to execute the computer-executable instructions stored in the memory to implement the steps performed by the user equipment in the above embodiments.

Alternatively, the processor 701 is configured to execute computer-executable instructions stored in the memory to implement the steps performed by the network device in the foregoing embodiments.

Reference may be made in particular to the description relating to the method embodiments described above.

Alternatively, the memory 702 may be separate or integrated with the processor 701.

When the memory 702 is provided separately, the device further comprises a bus 703 for connecting said memory 702 to the processor 701.

Further, based on the content described in the foregoing embodiments, an embodiment of the present application also provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the steps performed on the user equipment side in the foregoing embodiments are implemented.

Further, based on the content described in the foregoing embodiments, an embodiment of the present application further provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the steps performed by the network device side in the foregoing embodiments are implemented.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.

The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A PDU session establishment method, the method comprising:

the method comprises the steps that User Equipment (UE) determines a first maximum number of QoS flows which can be currently supported and a second maximum number of QoS rules;

the UE sends a first Protocol Data Unit (PDU) session establishment request to network equipment, wherein the first PDU session establishment request comprises the first maximum number and the second maximum number;

and the UE releases the PDU session without service in the established PDU session according to the fifth number and/or the sixth number, and sends a second PDU session establishment request to the network equipment, wherein the second PDU session establishment request comprises the fifth number and/or the sixth number.

2. The method of claim 1, wherein the UE determines a first maximum number of QoS flows currently supportable and a second maximum number of QoS rules, and wherein the determining comprises:

and determining the first maximum number according to the third number and the fifth maximum number of the QoS flows which can be supported by each PDU conversation, and determining the second maximum number according to the fourth number and the sixth maximum number of the QoS rules which can be supported by each PDU conversation.

3. The method of claim 2, wherein determining the first maximum number based on the third number and a fifth maximum number of QoS flows supportable for each PDU session comprises:

4. A PDU session establishment method, the method comprising:

receiving a first Protocol Data Unit (PDU) session establishment request sent by User Equipment (UE), wherein the first PDU session establishment request comprises a first maximum number of QoS flows which can be currently supported by the UE and a second maximum number of QoS rules; judging whether to accept the first PDU session establishment request or not according to the first maximum number and the second maximum number;

when the first PDU session establishment request is accepted, configuring the number of QoS flows and the number of QoS rules for the UE according to the first maximum number and the second maximum number, and sending a first response message of successful PDU session establishment to the UE, wherein the number of the QoS flows configured for the UE is less than or equal to the first maximum number, and the number of the QoS rules configured for the UE is less than or equal to the second maximum number;

when the first PDU session establishment request is not accepted, adjusting the first maximum number to be a fifth number, and/or adjusting the second maximum number to be a sixth number, and sending a PDU session establishment rejection message to the UE, wherein the PDU session establishment rejection message comprises the fifth number of QoS flows and/or the sixth number of QoS rules, the fifth number is greater than the first maximum number, and the sixth number is greater than the second maximum number;

after sending the PDU session setup reject message to the UE, the method further includes:

5. An apparatus for PDU session establishment, the apparatus comprising:

a determining module, configured to determine a first maximum number of QoS streams and a second maximum number of QoS rules that can be currently supported by user equipment UE;

a sending module, configured to send a first protocol data unit PDU session establishment request to a network device, where the first PDU session establishment request includes the first maximum number and the second maximum number;

the determining module is further configured to receive a PDU session setup reject message fed back by the network device, where the PDU session setup reject message includes a fifth number of QoS flows and/or a sixth number of QoS rules that are determined by the network device for the UE, where the fifth number is greater than the first maximum number, and the sixth number is greater than the second maximum number;

the sending module is further configured to release a PDU session that is performed without service in the established PDU session according to the fifth number and/or the sixth number, and send a second PDU session establishment request to the network device, where the second PDU session establishment request includes the fifth number and/or the sixth number.

6. An apparatus for PDU session establishment, the apparatus comprising:

a receiving module, configured to receive a first protocol data unit PDU session establishment request sent by a user equipment UE, where the first PDU session establishment request includes a first maximum number of QoS streams and a second maximum number of QoS rules that can be currently supported by the UE

the receiving module is further configured to receive a second PDU session establishment request sent by the UE, where the second PDU session establishment request includes the fifth number of QoS flows and/or the sixth number of QoS rules;

the configuration response module is further configured to establish a PDU session based on the second PDU session establishment request.

7. A user device, comprising: at least one processor and memory;

the memory stores computer-executable instructions;

execution of the computer-executable instructions stored by the memory by the at least one processor causes the at least one processor to perform the PDU session setup method according to any of claims 1 to 3.

8. A network device, comprising: at least one processor and memory;

the memory stores computer execution instructions;

execution of the computer-executable instructions stored by the memory by the at least one processor causes the at least one processor to perform the PDU session establishment method of claim 4.

9. A computer-readable storage medium having stored thereon computer-executable instructions which, when executed by a processor, implement the PDU session setup method according to any one of claims 1 to 3.

10. A computer-readable storage medium having stored thereon computer-executable instructions, which when executed by a processor, implement the PDU session setup method according to claim 4.