CN111034316B

CN111034316B - Method for transmitting data, terminal device and session management function SMF device

Info

Publication number: CN111034316B
Application number: CN201780094260.1A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-11-17
Filing date: 2017-11-17
Publication date: 2023-10-13
Anticipated expiration: 2037-11-17
Also published as: CN111034316A; WO2019095295A1

Abstract

The embodiment of the application discloses a method for transmitting data, terminal equipment and SMF equipment, wherein the method comprises the following steps: the method comprises the steps that terminal equipment sends a request message for establishing a first protocol data unit PDU session to session management function SMF equipment, the request message for establishing the first PDU session carries information of N data flow filters, the information of the N data flow filters is used for requesting the first PDU session to allow data packets matched with the N data flow filters to be transferred, and N is a positive integer. The method, the terminal equipment and the SMF equipment are beneficial to improving the performance of a communication system.

Description

Method for transmitting data, terminal device and session management function SMF device

Technical Field

Embodiments of the present application relate to the field of communications, and more particularly, to a method for transmitting data, a terminal device, and a session management function SMF device.

Background

In a wireless communication network, a terminal device needs to complete the setup procedure of a protocol data unit (Protocol Data Unit, PDU) session in order to perform a related service. In the prior art, the session management function (Session Management Function, SMF) cannot know the information of the data flow Filter (Traffic Filter), so that the SMF device cannot accurately associate the related data flow Filter with the PDU session, thereby affecting the performance of the communication system.

Disclosure of Invention

In view of this, the embodiments of the present application provide a method for transmitting data, a terminal device, and a session management function SMF device, which are beneficial to improving performance of a communication system.

In a first aspect, there is provided a method for transmitting data, the method comprising: the terminal equipment sends a request message for establishing a first protocol data unit PDU session to the session management function SMF equipment, wherein the request message for establishing the first PDU session carries N pieces of information of data flow filters, the N pieces of information of the data flow filters are used for requesting the first PDU session to allow data packets matched with the N pieces of data flow filters to be transferred, and N is a positive integer.

By carrying Traffic Filter information in the PDU session establishment request message, the SMF device can learn which Traffic filters are bound in the established PDU session, thereby being beneficial to improving the success rate of transmitting data packets matching the related Traffic filters in the PDU session.

In one possible implementation, the information of the data stream filter includes at least one of the following information: application identification, network protocol IP-3 tuples and uniform resource locator URL.

Optionally, the information of the data stream filter may also include other possible extension identifications.

In one possible implementation, the method further includes: the terminal equipment receives a response message sent by the SMF equipment, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

In one possible implementation, the method further includes: the terminal device responds to the response message and sends a second PDU session establishment request message to the SMF device, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting the second PDU session to allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and (N-M) is a positive integer.

Alternatively, the second PDU session may be the same PDU session as the first PDU session identification, or may be a PDU session different from the first PDU session identification.

In one possible implementation, the method further includes: the terminal equipment receives a response message sent by the SMF equipment, wherein the response message carries a cause value of unsuccessful establishment of the first PDU session.

In one possible implementation, the setup request message of the first PDU session carries at least one value of each of the at least one parameter for setting up the first PDU session, and the cause value is used to indicate that the at least one value of the first parameter of the at least one parameter for setting up the first PDU session does not meet the setup requirement.

In one possible implementation, the response message also carries a value of the first parameter suggested by the SMF device.

Alternatively, the first parameter may be one parameter or may be a plurality of parameters.

In one possible implementation, the at least one value of the first parameter comprises a plurality of values, and the setup request message for the first PDU session carries a priority list of the plurality of values of the first parameter.

In one possible implementation, the at least one parameter for establishing a PDU session includes at least one of the following parameters: the type of radio access technology RAT, session and traffic continuity mode, single network slice assistance information S-nsai and data network name DNN.

In one possible implementation, the type of RAT includes at least one of the following access technologies: new wireless NR, long term evolution LTE, global system for mobile communications GSM, code division multiple access CDMA, general packet radio service GPRS, wireless local area network WLAN, and satellite access.

In one possible implementation, the type of RAT includes at least one of the following access technologies: third generation partnership project 3GPP and non-3 GPP.

In a second aspect, there is provided a method for transmitting data, the method comprising: the method comprises the steps that Session Management Function (SMF) equipment receives a first Protocol Data Unit (PDU) session establishment request message sent by terminal equipment, wherein the first PDU session establishment request message carries N data stream filter information, the N data stream filter information is used for requesting the first PDU session to allow transmission of data packets matched with the N data stream filters, and N is a positive integer; the SMF device establishes the first PDU session according to the information of the N data stream filters.

In one possible implementation, the method further includes: the SMF device sends a response message to the terminal device, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

In one possible implementation, the method further includes: the SMF device receives a second PDU session establishment request message sent by the terminal device, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting the second PDU session to allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and the (N-M) is a positive integer; the SMF device establishes the second PDU session based on the information of the (N-M) data stream filter or the information of the M data stream filter.

In one possible implementation, the method further includes: the SMF device sends a response message to the terminal device, wherein the response message carries a cause value of unsuccessful establishment of the first PDU session.

In one possible implementation, the at least one value of the first parameter comprises a plurality of values, and the establishment request message of the first PDU session carries a priority list of the plurality of values of the first parameter.

In a third aspect, a terminal device is provided for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the terminal device comprises means for performing the method of the first aspect or any possible implementation of the first aspect.

In a fourth aspect, there is provided an SMF device for performing the method of the second aspect or any possible implementation of the second aspect. In particular, the network device comprises means for performing the method of the second aspect or any possible implementation of the second aspect.

In a fifth aspect, there is provided a terminal device comprising: memory, processor, input interface and output interface. The memory, the processor, the input interface and the output interface are connected through a bus system. The memory is for storing instructions and the processor is for executing the instructions stored by the memory for performing the method of the first aspect or any possible implementation of the first aspect.

In a sixth aspect, there is provided an SMF device, the network device comprising: memory, processor, input interface and output interface. The memory, the processor, the input interface and the output interface are connected through a bus system. The memory is for storing instructions and the processor is for executing the instructions stored by the memory for performing the method of the second aspect or any possible implementation of the second aspect.

In a seventh aspect, a computer storage medium is provided for storing computer software instructions for performing the method of the first aspect or any possible implementation of the first aspect, or the method of the second aspect or any possible implementation of the second aspect, comprising a program designed for performing the above aspect.

In an eighth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect or any of the alternative implementations of the first aspect or the method of the second aspect or any of the alternative implementations of the second aspect.

These and other aspects of the application will be more readily apparent from the following description of the embodiments.

Drawings

Fig. 1 shows a schematic diagram of an application scenario according to an embodiment of the present application.

Fig. 2 shows a schematic block diagram of an embodiment of the application for transmitting data.

Fig. 3 shows another schematic block diagram of a method for transmitting data according to an embodiment of the application.

Fig. 4 shows a schematic block diagram of a terminal device according to an embodiment of the application.

Fig. 5 shows a schematic block diagram of an SMF device of an embodiment of the present application.

Fig. 6 shows another schematic block diagram of a terminal device of an embodiment of the application.

Fig. 7 shows another schematic block diagram of an SMF device of an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

It should be understood that the technical solution of the embodiment of the present application may be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) systems, general packet Radio service (General Packet Radio Service, GPRS), LTE systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication systems, new Radio (NR) or future 5G systems, and the like.

In particular, the technical solution of the embodiment of the present application may be applied to various communication systems based on non-orthogonal multiple access technologies, such as a sparse code multiple access (Sparse Code Multiple Access, SCMA) system, a low density signature (Low Density Signature, LDS) system, etc., where, of course, the SCMA system and the LDS system may also be referred to as other names in the communication field; further, the technical solution of the embodiment of the present application may be applied to a multi-Carrier transmission system using a non-orthogonal multiple access technology, for example, an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM), a filter bank multi-Carrier (FBMC), a general frequency division multiplexing (Generalized Frequency Division Multiplexing, GFDM), a Filtered orthogonal frequency division multiplexing (F-OFDM) system, etc.

Fig. 1 illustrates a wireless communication system 100 in which embodiments of the present application may be used. The wireless communication system 100 may include an access network device 110. The access network device 110 may be a device that communicates with a terminal device. The access network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area. Alternatively, the access network device 110 may be a next generation radio access network (Next Generation Radio Access Network, NG RAN), or a base station (gNB) in an NR system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the access network device may be a relay station, an access point, an on-board device, a wearable device, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc. Alternatively, the access network device 110 may also be a base station in an LTE system, e.g. an evolved universal terrestrial radio access network (Evolved Universal Terrestrial Radio Access Network, E-UTRAN) device.

The wireless communication system 100 further comprises at least one terminal device 120 located within the coverage area of the access network device 110. The terminal device 120 may be mobile or stationary. Alternatively, the terminal device 120 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN, etc.

The wireless communication system 100 further comprises a core network device 130 in communication with the access network device. Alternatively, the core network device 130 may be a 5G core network device, e.g. an access and mobility management function (Access and Mobility Management Function, AMF), and also e.g. a session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example, a session management function+a data gateway (Session Management Function + Core Packet Gateway, smf+pgw-C) device on the core network side.

It should be appreciated that SMF+PGW-C may perform the functions performed by both SMF and PGW-C.

Optionally, in the embodiment of the present application, the AMF may perform information interaction with the SMF, for example, the SMF obtains some information on the radio access network side from the AMF.

Fig. 1 illustrates an access network device, a core network device, and two terminal devices, alternatively, the wireless communication system 100 may include multiple access network devices and each access network device may include other numbers of terminal devices within a coverage area, which is not limited by the embodiment of the present application.

Optionally, the wireless communication system 100 may further include other network entities such as a mobility management entity (Mobile Management Entity, MME), unified data management (Unified Data Management, UDM), authentication server function (Authentication Server Function, AUSF), user plane function (User Plane Function, UPF), signaling gateway (Signaling Gateway, SGW), and the like, which are not limited by the embodiments of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Fig. 2 shows a schematic block diagram of a method 200 for transmitting data according to an embodiment of the application. The terminal device shown in fig. 2 may be a terminal device as shown in fig. 1, and the SMF device shown in fig. 2 may be a core network device as shown in fig. 1. The method 200 includes some or all of the following:

S210, the terminal equipment sends a request message for establishing a first protocol data unit PDU session to session management function SMF equipment, wherein the request message for establishing the first PDU session carries N pieces of information of data flow filters, the N pieces of information of the data flow filters are used for requesting that the first PDU session can allow transmission of data packets matched with the N pieces of data flow filters, and N is a positive integer.

Specifically, when the terminal device requests to establish a protocol data unit (Protocol Data Unit, PDU) session, the terminal device may send a Non-Access Stratum (NAS) message to the SMF device, where the NAS message may carry an Identity (ID) of the PDU session to be established, and may also carry information of at least one data flow Filter (Traffic Filter), where the Traffic Filter information is used to request to the SMF device that the PDU session to be established can allow packet transfer of the related Traffic Filter, that is, a service data flow (Service Data Flow Template, SDF) template of the PDU session to be established includes information of the Traffic Filter sent by the terminal device. After receiving the NAS message, the SMF device can establish a PDU session and bind Traffic filters carried by the terminal device to the established PDU session, and if the established PDU session accepts certain Traffic filters, the accepted data packets matching the Traffic filters are allowed to be transferred in the established PDU session.

Therefore, in the method for transmitting data in the embodiment of the present application, by carrying the information of Traffic filters in the establishment request message of the PDU session, the SMF device can learn which Traffic filters are bound in the established PDU session, thereby being beneficial to improving the success rate of transmitting the related Traffic Filter data packets in the PDU session.

Optionally, in an embodiment of the present application, the information of the data stream filter includes at least one of the following information: application identification, network protocol (Internet Protocol, IP) -3-tuple and uniform resource locator (Uniform Resource Locator, URL), the information of the data stream filter may also include other possible extension identifications, to which embodiments of the application are not limited.

Optionally, in an embodiment of the present application, the method further includes: the terminal equipment receives a response message sent by the SMF equipment, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

After establishing the PDU session requested by the successful terminal device, the SMF device may reply to the terminal device with the association situation of the Traffic Filter carried by the terminal device, for example, the SMF device may carry the rejected Traffic Filter information in the response message, or carry the accepted Traffic Filter information in the response message. Once the terminal device knows the Traffic Filter in one state, the terminal device can obtain the Traffic Filter in the other state. The SMF device may reject, in part or in whole, traffic filters that the terminal device wants to associate with. It should be appreciated that the accepted or rejected Traffic filters that the SMF device replies to the terminal device may be specific only to the Traffic that the terminal device wants to associate with

The Filter may also include Traffic Filter that other terminal devices want to associate with, which the embodiment of the present application is not limited to.

Optionally, in an embodiment of the present application, the method further includes: the terminal device responds to the response message and sends a second PDU session establishment request message to the SMF device, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting the second PDU session to allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and (N-M) is a positive integer.

After feeding back to the terminal device those Traffic filters that were rejected by the PDU session, the terminal device may initiate the establishment of the PDU session to the SMF device again, requesting that those Traffic filters that were rejected be associated into the PDU session that was established. It should be appreciated that the reinitiated PDU session may be the previous PDU session, e.g., the same ID as the previous PDU session, or may be a different PDU session, e.g., the same ID as the previous PDU session.

Optionally, in an embodiment of the present application, the response message carries a cause value of unsuccessful session establishment of the first PDU.

If the SMF device does not establish the first PDU session successfully, that is, all Traffic filters that the terminal device wants to associate are not bound to the PDU session, the SMF device may reply a response message to the terminal device, and the response message may carry a cause value of the unsuccessful PDU session establishment. After receiving the cause value, the terminal device may make some corresponding adjustments.

Further, in the embodiment of the present application, the establishment request message of the first PDU session carries at least one value of each of the at least one parameter for establishing the first PDU session, where the cause value is used to indicate that the at least one value of the first parameter of the at least one parameter for establishing the first PDU session does not meet the establishment requirement.

The terminal device may carry, in the PDU session establishment request message, that is, the above NAS message, a parameter value used for establishing the PDU session, where the parameter may be, for example: at least one of a type of radio access technology (Radio Access Technology, RAT), session and traffic continuity mode, single network slice assistance information (Single-Network Slice Selection Assistance Information, S-nsai) and data network name (Data Network Name, DNN). Other possible parameters are also possible, such as the type of split, etc., to which embodiments of the present application are not limited.

The terminal equipment carries some parameter values in the NAS message, which can be one or more, if the parameter values are one, the SMF equipment directly establishes PDU session according to the parameter values carried by the terminal equipment, if the establishment requirement is not met, the SMF replies the reason to the terminal equipment, that is, the parameter values carried by the terminal equipment do not meet the requirement. The terminal device may further be adapted. If the value of some parameters carried by the terminal equipment in the NAS message is a plurality of values, the SMF equipment can firstly select one value from the plurality of values to establish the PDU session, and if the request is not met, the SMF equipment can reselect one value to establish the PDU session until the selected parameter value meets the request for establishing the PDU session or until the plurality of values of the parameters sent by the terminal equipment do not meet the request. If each value of the one or more parameters sent by the terminal device does not meet the establishment requirement of the PDU session, the SMF device may directly reply to the terminal device with a response message indicating that the PDU session establishment fails. The plurality of values of a certain parameter transmitted by the terminal device to the SMF device may have a plurality of values of priorities, in other words, the terminal device may transmit a priority list of a certain parameter to the SMF device. After receiving the priority list of a certain parameter, the SMF device may first select a first priority value to establish a PDU session, and if the priority list does not include the first priority value, or the first priority value does not meet the establishment requirement, the SMF device may select a second priority value to establish the PDU session, until the value of the parameter meets the PDU session establishment requirement or all the values in the priority list of the parameter do not meet the establishment requirement.

Optionally, in an embodiment of the present application, the response message further carries a value of the first parameter proposed by the SMF device.

If the SMF device fails to establish a PDU session because the value of one or more parameters does not meet the establishment requirement, the SMF device may send a proposed value of the parameter to the terminal device, where the proposed value may be one or more.

Further, the type of RAT may include at least one of the following access technologies: new wireless NR, long term evolution LTE, global system for mobile communications GSM, code division multiple access CDMA, general packet radio service GPRS, wireless local area network WLAN, and satellite access. The type of RAT may also include at least one of the following access technologies: third generation partnership project (3rd Generation Partnership Project,3GPP) and non-3 GPP. The type of RAT may be any combination of the various access technologies listed above.

Fig. 3 shows a schematic block diagram of a method 300 of transmitting data according to an embodiment of the application. As shown in fig. 3, the method 300 includes some or all of the following:

s310, the session management function SMF device receives a request message for establishing a first protocol data unit PDU session sent by the terminal device, wherein the request message for establishing the first PDU session carries N data stream filter information, the N data stream filter information is used for requesting that the first PDU session can allow to transmit data packets matched with the N data stream filters, and N is a positive integer.

S320, the SMF device establishes the first PDU session according to the information of the N data stream filters.

Therefore, in the method for transmitting data in the embodiment of the present application, by carrying the information of Traffic filters in the establishment request message of the PDU session, the SMF device can learn which Traffic filters are bound in the established PDU session, thereby being beneficial to improving the success rate of transmitting related Traffic Filter data in the PDU session.

Optionally, in an embodiment of the present application, the information of the data stream filter includes at least one of the following information: application identification, network protocol IP-3 tuples and uniform resource locator URL.

Optionally, in an embodiment of the present application, the method further includes: the SMF device sends a response message to the terminal device, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

Optionally, in an embodiment of the present application, the method further includes: the SMF device receives a second PDU session establishment request message sent by the terminal device, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting the second PDU session to allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and the (N-M) is a positive integer; the SMF device establishes the second PDU session based on the information of the (N-M) data stream filter or the information of the M data stream filter.

Optionally, in the embodiment of the present application, the SMF device sends a response message to the terminal device, where the response message carries a cause value of unsuccessful session establishment of the first PDU.

Optionally, in an embodiment of the present application, the setup request message of the first PDU session carries at least one value of each of at least one parameter for setting up the first PDU session, where the cause value is used to indicate that the at least one value of the first parameter of the at least one parameter for setting up the first PDU session does not meet the setup requirement.

Optionally, in an embodiment of the present application, the at least one value of the first parameter includes a plurality of values, and the establishment request message of the first PDU session carries a priority list of the plurality of values of the first parameter.

Optionally, in an embodiment of the present application, the at least one parameter for establishing a PDU session includes at least one of the following parameters: the type of radio access technology RAT, session and traffic continuity mode, single network slice assistance information S-nsai and data network name DNN.

Optionally, in an embodiment of the present application, the type of RAT includes at least one of the following access technologies: new wireless NR, long term evolution LTE, global system for mobile communications GSM, code division multiple access CDMA, general packet radio service GPRS, wireless local area network WLAN, and satellite access.

Optionally, in an embodiment of the present application, the type of RAT includes at least one of the following access technologies: third generation partnership project 3GPP and non-3 GPP.

It should be understood that the interactions between the SMF device and the terminal device described by the SMF device and the related characteristics, functions, etc. correspond to the related characteristics, functions of the terminal device. And related content is described in detail in the method 200, and is not described herein for brevity.

It should also be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Having described in detail the method for transmitting data according to the embodiment of the present application above, an apparatus for transmitting data according to the embodiment of the present application will be described below with reference to fig. 4 to 7, and technical features described in the method embodiment are applicable to the following apparatus embodiments.

Fig. 4 shows a schematic block diagram of a terminal device 400 of an embodiment of the application. As shown in fig. 4, the terminal device 400 includes:

a sending unit 410, configured to send a first protocol data unit PDU session establishment request message to a session management function SMF device, where the first PDU session establishment request message carries N data stream filter information, where the N data stream filter information is used to request that the first PDU session can allow to transfer data packets matching the N data stream filters, and N is a positive integer.

Therefore, the terminal device in the embodiment of the application carries the information of the Traffic Filter in the establishment request message of the PDU session, so that the SMF device can know which Traffic filters are bound in the established PDU session, thereby being beneficial to improving the success rate of transmitting related Traffic Filter data in the PDU session.

Optionally, in an embodiment of the present application, the terminal device further includes: and the receiving unit is used for receiving a response message sent by the SMF equipment, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

Optionally, in an embodiment of the present application, the sending unit is further configured to: in response to the response message, sending a second PDU session establishment request message to the SMF device, where the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, where the information of (N-M) data stream filters or the information of the M data stream filters is used to request that the second PDU session can allow delivery of data packets matching the (N-M) data stream filters or the M data stream filters, (N-M) being a positive integer.

Optionally, in an embodiment of the present application, the terminal device further includes: and the receiving unit is used for receiving a response message sent by the SMF equipment, wherein the response message carries a cause value of unsuccessful establishment of the first PDU session.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow of the terminal device in the method of fig. 2, which is not described herein for brevity.

Fig. 5 shows a schematic block diagram of an SMF device 500 of an embodiment of the present application. As shown in fig. 5, the SMF device 500 includes:

a receiving unit, configured to receive an establishment request message of a first protocol data unit PDU session sent by a terminal device, where the establishment request message of the first PDU session carries information of N data flow filters, where the information of the N data flow filters is used to request that the first PDU session can allow transmission of data packets matching the N data flow filters, and N is a positive integer;

And the establishing unit is used for establishing the first PDU session according to the information of the N data stream filters.

Therefore, the SMF device in the embodiment of the application carries the information of the Traffic Filter in the establishment request message of the PDU session, so that the SMF device can know which Traffic Filter is bound in the established PDU session, thereby being beneficial to improving the success rate of transmitting the related Traffic Filter data in the PDU session.

Optionally, in an embodiment of the present application, the SMF device further includes: and the sending unit is used for sending a response message to the terminal equipment, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

Optionally, in an embodiment of the present application, the receiving unit is further configured to: receiving a second PDU session establishment request message sent by the terminal equipment, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting the second PDU session to allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and the (N-M) is a positive integer;

The setup unit is further configured to: the establishment of the second PDU session is performed based on the information of the (N-M) data stream filter or the information of the M data stream filters.

Optionally, in an embodiment of the present application, the SMF device further includes: and the sending unit is used for sending a response message to the terminal equipment, wherein the response message carries a cause value of unsuccessful establishment of the first PDU session.

It should be understood that the SMF device 500 according to an embodiment of the present application may correspond to the SMF device in an embodiment of the present application, and the above and other operations and/or functions of each unit in the SMF device 500 are respectively for implementing the corresponding flow of the SMF device in the method of fig. 3, and are not described herein for brevity.

As shown in fig. 6, an embodiment of the present application further provides a terminal device 600, which terminal device 600 may be the terminal device 400 in fig. 4, which can be used to perform the content of the terminal device corresponding to the method 100 in fig. 2. The terminal device 600 includes: an input interface 610, an output interface 620, a processor 630, and a memory 640, the input interface 610, the output interface 620, the processor 630, and the memory 640 may be connected by a bus system. The memory 640 is used to store programs, instructions or code. The processor 630 is configured to execute programs, instructions or codes in the memory 640 to control the input interface 610 to receive signals, the output interface 620 to transmit signals, and perform the operations of the foregoing method embodiments.

It should be appreciated that in embodiments of the present application, the processor 630 may be a central processing unit (Central Processing Unit, CPU), the processor 630 may also be other general purpose processors, digital signal processors, application specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 640 may include read only memory and random access memory and provides instructions and data to the processor 630. A portion of memory 640 may also include non-volatile random access memory. For example, the memory 640 may also store information of device type.

In implementation, the various aspects of the methods described above may be implemented by integrated logic circuitry in hardware or instructions in software in processor 630. The method disclosed in connection with the embodiments of the present application may be embodied directly in hardware processor execution or in a combination of hardware and software modules in a processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and performs the above method in combination with its hardware. To avoid repetition, a detailed description is not provided herein.

In a specific embodiment, the transmitting unit in the terminal device 400 may be implemented by the output interface 620 in fig. 6, and the receiving unit in the terminal device 400 may be implemented by the input interface 610 in fig. 6.

As shown in fig. 7, an embodiment of the present application further provides an SMF device 700, where the network device 700 may be the SMF device 500 of fig. 5, which can be used to perform the content of a network device corresponding to the method 300 of fig. 3. The network device 700 includes: an input interface 710, an output interface 720, a processor 730, and a memory 740, the input interface 710, the output interface 720, the processor 730, and the memory 740 being connectable by a bus system. The memory 740 is used to store programs, instructions or code. The processor 730 executes the programs, instructions, or code in the memory 740 to control the input interface 710 to receive signals, control the output interface 720 to send signals, and perform the operations of the method embodiments described above.

It should be appreciated that in embodiments of the present application, the processor 730 may be a central processing unit (Central Processing Unit, CPU), the processor 730 may also be other general purpose processors, digital signal processors, application specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 740 may include read only memory and random access memory, and provides instructions and data to the processor 730. A portion of memory 740 may also include non-volatile random access memory. For example, memory 740 may also store information of device type.

In implementation, the various aspects of the methods described above may be implemented by integrated logic circuitry in hardware in processor 730 or instructions in software. The method disclosed in connection with the embodiments of the present application may be embodied directly in hardware processor execution or in a combination of hardware and software modules in a processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 740, and the processor 730 reads the information in the memory 740 and performs the above method in combination with its hardware. To avoid repetition, a detailed description is not provided herein.

In a specific embodiment, the sending unit in the SMF device 500 may be implemented by the output interface 720 in fig. 7. The setup unit in the SMF device 500 may be implemented by the processor 730 in fig. 7. The receiving unit of the SMF device 500 may be implemented by the input interface 710 in fig. 7.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for transmitting data, comprising:

the method comprises the steps that a terminal device sends a first Protocol Data Unit (PDU) session establishment request message to Session Management Function (SMF) equipment, wherein the first PDU session establishment request message carries N data flow filter information, the N data flow filter information is used for requesting the first PDU session to allow data packets matched with the N data flow filters to be transmitted, N is a positive integer, the first PDU session establishment request message carries at least one of a plurality of values of each of parameters used for establishing the first PDU session, and the first PDU session establishment request message carries at least one priority list of a plurality of values of a first parameter of the parameters used for establishing the first PDU session;

The terminal equipment receives a response message sent by the SMF equipment, wherein the response message carries a cause value of unsuccessful establishment of the first PDU session and a value of the first parameter suggested by the SMF equipment, the cause value is used for indicating that the multiple values of the first parameter in the at least one parameter for establishing the first PDU session do not meet the establishment requirement, and the value of the first parameter suggested by the SMF equipment comprises multiple values;

wherein the at least one parameter for establishing the first PDU session comprises at least one of the following parameters: the type of radio access technology RAT, session and traffic continuity mode, single network slice assistance information S-nsai and data network name DNN.

2. The method of claim 1, wherein the information of the data stream filter comprises at least one of the following information: application identification, network protocol IP-3 tuples and uniform resource locator URL.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

and the terminal equipment receives a response message sent by the SMF equipment, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

4. A method according to claim 3, characterized in that the method further comprises:

the terminal device responds to the response message, and sends a second PDU session establishment request message to the SMF device, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting the second PDU session to allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and (N-M) is a positive integer.

5. The method of claim 1, wherein the type of RAT comprises at least one of the following access technologies: new wireless NR, long term evolution LTE, global system for mobile communications GSM, code division multiple access CDMA, general packet radio service GPRS, wireless local area network WLAN, and satellite access.

6. The method of claim 1, wherein the type of RAT comprises at least one of the following access technologies: third generation partnership project 3GPP and non-3 GPP.

7. A method for transmitting data, comprising:

the method comprises the steps that a Session Management Function (SMF) device receives a first Protocol Data Unit (PDU) session establishment request message sent by a terminal device, wherein the first PDU session establishment request message carries N data flow filter information, the N data flow filter information is used for requesting the first PDU session to allow transmission of data packets matched with the N data flow filters, N is a positive integer, the first PDU session establishment request message carries at least one of a plurality of values of each of parameters used for establishing the first PDU session, and the first PDU session establishment request message carries at least one priority list of a plurality of values of a first parameter of the parameters used for establishing the first PDU session;

the SMF device establishes the first PDU session according to the information of the N data stream filters;

the SMF device sends a response message to the terminal device, wherein the response message carries a cause value of unsuccessful establishment of the first PDU session and a value of the first parameter suggested by the SMF device, the cause value is used for indicating that the multiple values of the first parameter in the at least one parameter for establishing the first PDU session do not meet the establishment requirement, and the value of the first parameter suggested by the SMF device comprises multiple values;

8. The method of claim 7, wherein the information of the data stream filter comprises at least one of the following information: application identification, network protocol IP-3 tuples and uniform resource locator URL.

9. The method according to claim 7 or 8, characterized in that the method further comprises:

and the SMF equipment sends a response message to the terminal equipment, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

10. The method according to claim 9, wherein the method further comprises:

the SMF device receives a second PDU session establishment request message sent by the terminal device, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, and the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting the second PDU session to allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and the (N-M) data stream filters are positive integers;

And the SMF device establishes the second PDU session according to the information of the (N-M) data stream filters or the information of the M data stream filters.

11. The method of claim 7, wherein the type of RAT comprises at least one of the following access technologies: new wireless NR, long term evolution LTE, global system for mobile communications GSM, code division multiple access CDMA, general packet radio service GPRS, wireless local area network WLAN, and satellite access.

12. The method of claim 7, wherein the type of RAT comprises at least one of the following access technologies: third generation partnership project 3GPP and non-3 GPP.

13. A terminal device, characterized in that the terminal device comprises:

a sending unit, configured to send an establishment request message of a first protocol data unit PDU session to a session management function SMF device, where the establishment request message of the first PDU session carries information of N data flow filters, where the information of the N data flow filters is used to request that the first PDU session can allow delivery of a data packet matching the N data flow filters, N is a positive integer, and the establishment request message of the first PDU session carries at least one value of each of parameters used to establish the first PDU session, and the establishment request message of the first PDU session carries at least one priority list of values of a first parameter of parameters used to establish the first PDU session;

The terminal device further comprises a receiving unit for:

receiving a response message sent by the SMF device, where the response message carries a cause value of unsuccessful establishment of the first PDU session and a value of the first parameter proposed by the SMF device, where the cause value is used to indicate that the multiple values of a first parameter in the at least one parameter used to establish the first PDU session do not meet an establishment requirement, and the value of the first parameter proposed by the SMF device includes multiple values;

wherein the at least one parameter for establishing the first PDU session comprises at least one of the following parameters: the radio access technology RAT type, session and traffic continuity mode, single network slice assistance information S-nsai and data network name DN.

14. The terminal device of claim 13, wherein the information of the data stream filter comprises at least one of the following information: application identification, network protocol IP-3 tuples and uniform resource locator URL.

15. Terminal device according to claim 13 or 14, characterized in that the terminal device further comprises:

and the receiving unit is used for receiving a response message sent by the SMF equipment, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

16. The terminal device of claim 15, wherein the transmitting unit is further configured to:

and responding to the response message, sending a second PDU session establishment request message to the SMF device, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, and the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting that the second PDU session can allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and (N-M) is a positive integer.

17. The terminal device of claim 13, wherein the type of RAT comprises at least one of the following access technologies: new wireless NR, long term evolution LTE, global system for mobile communications GSM, code division multiple access CDMA, general packet radio service GPRS, wireless local area network WLAN, and satellite access.

18. The terminal device of claim 13, wherein the type of RAT comprises at least one of the following access technologies: third generation partnership project 3GPP and non-3 GPP.

19. A session management function, SMF, device, the SMF device comprising:

a receiving unit, configured to receive an establishment request message of a first protocol data unit PDU session sent by a terminal device, where the establishment request message of the first PDU session carries information of N data flow filters, where the information of the N data flow filters is used to request that the first PDU session can allow delivery of data packets matching the N data flow filters, N is a positive integer, and the establishment request message of the first PDU session carries at least one value of each of parameters used to establish the first PDU session, and the establishment request message of the first PDU session carries at least one priority list of values of a first parameter of the parameters used to establish the first PDU session;

an establishing unit, configured to establish the first PDU session according to the information of the N data stream filters;

a sending unit, configured to send a response message to the terminal device and a value of the first parameter proposed by the SMF device, where the response message carries a cause value of unsuccessful establishment of the first PDU session, where the cause value is used to indicate that the multiple values of a first parameter in the at least one parameter for establishing the first PDU session do not meet an establishment requirement, and the value of the first parameter proposed by the SMF device includes multiple values;

20. The SMF device of claim 19, wherein said data stream filter information comprises at least one of: application identification, network protocol IP-3 tuples and uniform resource locator URL.

21. The SMF device of claim 19 or 20, wherein said SMF device further comprises:

and the sending unit is used for sending a response message to the terminal equipment, wherein the response message carries information of M data stream filters accepted or rejected by the first PDU session in the N data stream filters, and M is a positive integer.

22. The SMF device of claim 21, wherein said receiving unit is further configured to:

receiving a second PDU session establishment request message sent by the terminal equipment, wherein the second PDU session establishment request message carries information of (N-M) data stream filters except the M data stream filters or information of the M data stream filters in the N data stream filters rejected by the first PDU session, and the information of the (N-M) data stream filters or the information of the M data stream filters is used for requesting the second PDU session to allow transmission of data packets matched with the (N-M) data stream filters or the M data stream filters, and the (N-M) data stream filters are positive integers;

The establishing unit is further configured to:

and establishing the second PDU session according to the information of the (N-M) data stream filters or the information of the M data stream filters.

23. The SMF device of claim 19, wherein the type of RAT comprises at least one of the following access technologies: new wireless NR, long term evolution LTE, global system for mobile communications GSM, code division multiple access CDMA, general packet radio service GPRS, wireless local area network WLAN, and satellite access.

24. The SMF device of claim 19, wherein the type of RAT comprises at least one of the following access technologies: third generation partnership project 3GPP and non-3 GPP.

25. A terminal device, comprising:

a processor;

a memory for storing a program executable by the processor;

wherein the method according to any of claims 1 to 6 is performed when the processor executes the program.

26. An SMF device, comprising:

a processor;

a memory for storing a program executable by the processor;

wherein the method according to any of claims 7 to 12 is performed when the processor executes the program.

27. A computer readable storage medium storing program code for execution by a terminal device, wherein the program code, when executed, causes the terminal device to perform the method of any of claims 1 to 6.

28. A computer readable storage medium storing program code for execution by an SMF device, wherein the program code, when executed, causes the SMF device to perform the method of any of claims 7 to 12.