CN110519809A

CN110519809A - Manage the methods, devices and systems of PDU session

Info

Publication number: CN110519809A
Application number: CN201810493181.4A
Authority: CN
Inventors: 刘睿智; 周铮; 吴义壮; 熊春山
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-05-21
Filing date: 2018-05-21
Publication date: 2019-11-29
Anticipated expiration: 2038-05-21
Also published as: WO2019223702A1; CN110519809B

Abstract

The embodiment of the present application discloses the methods, devices and systems of management PDU session, is related to field of communication technology, facilitates saving PDU session and enters the time required for activated state.This method comprises: session management network element initiates to determine that at least one PDU session, at least one PDU session are in activated state in the PDU session established from terminal；Session management network element sends the first information to access network equipment；The first information includes the identification information of at least one PDU session, the first information is used to indicate the user face interface-free resources that access network equipment discharges at least one PDU session, retains the configuration information of the user face interface-free resources of at least one PDU session and the context of at least one PDU session.

Description

Manage the methods, devices and systems of PDU session

Technical field

The invention relates to field of communication technology more particularly to management agreement data cell (protocol data Unit, PDU) session methods, devices and systems.

Background technique

PDU session is the connection between terminal and data network (data network, DN), and terminal can be initiated to establish more A PDU session, to be connected to identical DN or different DN.In the 5th generation (5rd generation, 5G) network architecture, PDU session can be set to activated state or deactivated state.When PDU session is in activated state, the user face of the PDU session is empty Mouth resource and control plane resource are it has been established that can pass through the PDU session between terminal and DN transmits data.When PDU session When in deactivated state, the user face interface-free resources and control plane resource of PDU session remain partial information, terminal and DN it Between cannot pass through the PDU session transmit data.

When PDU session is in deactivated state, if thering are data to need to be transmitted by the PDU session, in network Functional network element such as Radio Access Network (radio access network, RAN) equipment, conversation management functional (session Management function, SMF) network element and user plane functions (user plane function, UPF) network element etc., it needs Based on the partial information of the PDU session retained in network, restores the user face resource and control plane resource of the PDU session, make It obtains the PDU session and is in activated state.However, PDU session is entered the process of activated state by deactivated state, more interaction is needed Signaling, it is therefore desirable to time it is longer.

Summary of the invention

The embodiment of the present application provides a kind of methods, devices and systems for managing PDU session, helps to save PDU session Into the time required for activated state.

In a first aspect, providing a kind of method for managing PDU session.This method may include: session management network element from end It initiates to determine at least one PDU session in the PDU session established in end；At least one PDU session is in activated state；Session management Network element sends the first information to access network equipment；The first information includes the identification information of at least one PDU session, the first information The user face interface-free resources that access network equipment discharges at least one PDU session are used to indicate, user face interface-free resources are retained The context of configuration information and at least one PDU session.

Wherein, which is that terminal is initiated to need to enter in the PDU session in activated state established to stop The PDU session of dormancy state.On how to determine that a PDU session needs to enter dormant state, the application is without limiting, specific example It can be with reference to implementation section in detail below.Optionally, the number of at least one PDU session is less than terminal and initiates to establish PDU session number.Optionally, the number of at least one PDU session is equal to that terminal initiates the PDU session established Number.

As it can be seen that, when PDU session is in activated state, session management network element can indicate that access net is set in the technical solution The standby user face interface-free resources for discharging the PDU session, and retain configuration information and the PDU session of the user face interface-free resources Context, in this way, when there is data to need to be transmitted by the PDU session, access network equipment is according to the PDU session of reservation User face interface-free resources configuration information can the fast quick-recovery PDU session user face interface-free resources, and do not need again The context of PDU session is obtained, therefore facilitates saving PDU session and enters the time required for activated state.In addition the technical side Case helps to realize to be selected any one or more PDU sessions entering dormant state by activated state according to demand, increases management The flexibility of PDU session.

In a kind of possible design, session management network element initiates to determine at least one in the PDU session established from terminal PDU session may include: that session management network element determines that at least one PDU session belongs to following any PDU session: default The PDU session for needing to transmit without data in period；In switching flow, all service quality streams are all set by target access network The PDU session of standby (such as target Next Generation Access equipment) refusal；Terminal is out of local data network (local area Data network, LADN) when LADN PDU session；When terminal needs to be entered by connected state pause state, in activated state PDU session；Terminal out of permission range when, the PDU session in activated state.

In a kind of possible design, session management network element initiates to determine at least one in the PDU session established from terminal PDU session may include: session management network element according to the session management subscription data of terminal, the strategy and session management of terminal Network element at least one of is locally configured, and initiates to determine at least one PDU session in the PDU session established from terminal.

In a kind of possible design, session management network element initiates to determine at least one in the PDU session established from terminal PDU session, may include: that session management network element receives the second information that terminal is sent, and be built according to the second information from terminal initiation At least one PDU session is determined in vertical PDU session；Wherein, the second information includes the identification information of at least one PDU session With indicate that at least one PDU session is able to enter the information of dormant state.

In a kind of possible design, session management network element initiates to determine at least one in the PDU session established from terminal PDU session may include: that session management network element receives the second information that terminal is sent, according to the session management of terminal signing number At least one of being locally configured according to, the strategy of terminal and session management network element and the second information, initiate to establish from terminal PDU session in determine at least one PDU session；Wherein, the second information include at least one PDU session identification information and Indicate that at least one PDU session is able to enter the information of dormant state.

In a kind of possible design, which is able to enter dormant state.Based on the possible design, It is considered that: at least one PDU session is that terminal initiates the needs in the PDU session established and is able to enter dormant state PDU session.

In a kind of possible design, which is able to enter dormant state.This method can also include: Session management network element is according in being locally configured of the session management subscription data of terminal, the strategy of terminal and session management network element At least one determines that at least one PDU session is to be able to enter the PDU session of dormant state.

In a kind of possible design, which is able to enter dormant state.This method can also include: Session management network element receives the second information that terminal is sent, and determining that at least one PDU session is according to the second information can be into Enter the PDU session of dormant state；Wherein, the second information include at least one PDU session identification information and indicate this at least one A PDU session is able to enter the information of dormant state.

In a kind of possible design, which is able to enter dormant state.This method can also include: Session management network element receives the second information that terminal is sent, according to the session management subscription data of terminal, the strategy of terminal and meeting Words managed network element at least one of be locally configured and the second information determines that at least one PDU session is to be able to enter not The PDU session of dormancy state；Wherein, the second information includes the identification information and expression at least one PDU of at least one PDU session Session is able to enter the information of dormant state.

In a kind of possible design, this method can also include: that session management network element is receiving access network equipment hair After the response message of the first information sent, the state of at least one PDU session is revised as dormant state by activated state.

In a kind of possible design, this method can also include: that session management network element reception access network equipment is sent Third information；Wherein, third information includes the identification information of one or more PDU sessions, and one or more PDU session is eventually What end was determined from least one PDU session；Third information is used to indicate access network equipment and one or more PDU has been established The user face interface-free resources of session.In other words, third information is used to indicate access network equipment and has restored the one or more The user face interface-free resources of PDU session.The possible design gives the process that PDU session is restored to activated state from dormant state In, step performed by session management network element.

In a kind of possible design, this method can also include: session management network element after receiving third information, The state for one or more PDU sessions that the identification information of one or more PDU session included by third information is marked Activated state is revised as by dormant state.

Second aspect provides a kind of method for managing PDU session.This method may include: that access network equipment receives meeting Talk about the first information that managed network element is sent；Wherein, the first information includes the identification information of at least one PDU session, this at least one A PDU session is that session management network element initiates to determine in the PDU session established from terminal, which is in Activated state；Access network equipment according to the first information, discharges the user face interface-free resources of at least one PDU session, retains user The context of the configuration information of face interface-free resources and at least one PDU session.

As it can be seen that, when PDU session is in activated state, access network equipment can discharge the PDU session in the technical solution User face interface-free resources, and retain the configuration information of the user face interface-free resources and the context of the PDU session, in this way, when having When data need to be transmitted by the PDU session, access network equipment is according to the user face interface-free resources of the PDU session of reservation Configuration information can the fast quick-recovery PDU session user face interface-free resources, and do not need to reacquire PDU session up and down Text, therefore facilitate saving PDU session and enter the time required for activated state.In addition the technical solution is helped to realize according to need It asks selection that any one or more PDU sessions are entered dormant state by activated state, increases the flexibility of management PDU session.

In a kind of possible design, access network equipment sends the 4th information according to the first information, to terminal；Wherein, Four information include the identification information of at least one PDU session, and the 4th information is used to indicate terminal and discharges at least one PDU meeting The user face interface-free resources of words retain the configuration information of user face interface-free resources and the context of at least one PDU session.

As it can be seen that, when PDU session is in activated state, access network equipment can be discharged with instruction terminal should in the technical solution The user face interface-free resources of PDU session, and retain the configuration information of the user face interface-free resources and the context of the PDU session, In this way, terminal is eated dishes without rice or wine according to the user face of the PDU session of reservation when there is data to need to be transmitted by the PDU session The configuration information of resource can the fast quick-recovery PDU session user face interface-free resources, and do not need to reacquire PDU session Context, therefore facilitate saving PDU session and enter the time required for activated state.

In a kind of possible design, this method can also include: that access network equipment receives the 5th information that terminal is sent； Wherein, the 5th information includes the identification information of one or more PDU sessions, one or more PDU session be terminal from this to It is determined in a few PDU session；Access network equipment is eated dishes without rice or wine according to the user face of the 5th information and one or more PDU session The configuration information of resource establishes the user face interface-free resources of one or more PDU session.The possible design gives PDU During session is restored to activated state from dormant state, step performed by access network equipment.

In a kind of possible design, this method, which can also include: access network equipment, sends third to session management network element Information；Wherein, third information includes the identification information of one or more PDU session；Third information is used to indicate access net and sets The standby user face interface-free resources that one or more PDU session has been established.The possible design gives PDU session from dormant state During being restored to activated state, step performed by access network equipment.

In a kind of possible design, in switching flow, above-mentioned access network equipment is source access network equipment；This method is also It may include: the context that source access network equipment sends one or more PDU session to target access network equipment.It can based on this The design of energy, optionally, above-mentioned access network equipment receive the 5th information that terminal is sent, specifically: target access network equipment connects Receive the 5th information that terminal is sent.

The third aspect provides a kind of method for managing PDU session.This method may include: that terminal reception access net is set The 4th information that preparation is sent；Wherein, the 4th information includes the identification information of at least one PDU session, at least one PDU session It is that session management network element initiates to determine in the PDU session established from terminal, which is in activated state；Eventually End discharges the user face interface-free resources of at least one PDU session according to the 4th information, retains the configuration of user face interface-free resources The context of information and at least one PDU session.

In a kind of possible design, this method, which can also include: terminal, sends the second information to session management network element；Its In, the second information includes the identification information of at least one PDU session and indicates that at least one PDU session is able to enter suspend mode The information of state, the second information are initiated to determine at least one PDU meeting in the PDU session established from terminal for session management network element Words.Optionally, which can occur to be certainly not limited to this in the process that terminal establishes PDU session.As it can be seen that this Application embodiment supports terminal to be able to enter the technical solution of dormant state to session management reported by network elements PDU session.

In a kind of possible design, this method can also include: user of the terminal according to one or more PDU session The configuration information of face interface-free resources establishes the user face interface-free resources of one or more PDU session；Wherein, this or more A PDU session is that terminal is determined from least one PDU session；Terminal sends the 5th information to access network equipment；Wherein, Five information include the identification information of one or more PDU session, and the 5th information is used to indicate access network equipment and establishes this Or the user face interface-free resources of multiple PDU sessions.The possible design gives PDU session and is restored to activated state from dormant state In the process, step performed by terminal.

Fourth aspect provides a kind of session management network element, such as SMF network element.The session management network element can be used for holding Any method that the above-mentioned first aspect of row provides.The session management network element specifically can be meeting described in above-mentioned first aspect Talk about managed network element.

In a kind of possible design, function can be carried out to session management network element according to the method that above-mentioned first aspect provides The division of energy module, for example, each functional module of each function division can be corresponded to, it can also be by two or more function It can be integrated in a processing module.

In alternatively possible design, which may include: memory and processor, and memory is used for Computer program is stored, when which is executed by processor, so that either first aspect offer method is performed.

5th aspect, the embodiment of the present application provides a kind of access network equipment, such as RAN equipment.The access network equipment can be with Any method provided for executing above-mentioned second aspect.The access network equipment specifically can be to be described in above-mentioned second aspect Access network equipment.

In a kind of possible design, function can be carried out to access network equipment according to the method that above-mentioned second aspect provides The division of module, for example, each functional module of each function division can be corresponded to, it can also be by two or more functions It is integrated in a processing module.

In alternatively possible design, which may include: memory and processor, and memory is for depositing Computer program is stored up, when which is executed by processor, so that either second aspect offer method is performed.

6th aspect, the embodiment of the present application provide a kind of terminal installation.The terminal installation can be used for executing above-mentioned Any method that three aspects provide.The terminal installation specifically can be terminal described in the above-mentioned third aspect or the terminal Device can be chip.

In a kind of possible design, function mould can be carried out to terminal installation according to the method that the above-mentioned third aspect provides The division of block, for example, each functional module of each function division can be corresponded to, it can also be by two or more function collection In Cheng Yi processing module.

In alternatively possible design, which may include: memory and processor, and memory is for storing Computer program, when which is executed by processor, so that either third aspect offer method is performed.

7th aspect, the embodiment of the present application provide a kind of system for managing PDU session, which may include above-mentioned the Any session management network element that four aspects provide, any access network equipment and above-mentioned that above-mentioned 5th aspect provides Any terminal installation that six aspects provide.

The embodiment of the present application also provides a kind of processing unit, to realize that above-mentioned apparatus (such as session management network element, connects Log equipment or terminal installation) function, which may include processor and interface；Processing unit can be a core Piece, processor can be realized by hardware or be realized by software, and when passing through hardware realization, which can be with It is logic circuit, integrated circuit etc.；When by software to realize, which can be a general processor, pass through reading The software code stored in access to memory realizes that the memory can integrate in the processor, can be located at except processor, It is individually present.

The embodiment of the present application also provides a kind of computer readable storage medium, stored on the computer readable storage medium There is computer instruction, when the computer instruction is run on computers, so that computer executes above-mentioned first aspect to third Any possible method of aspect.

The embodiment of the present application also provides a kind of computer program products, when the computer program product is transported on computers When row, so that first aspect to either third aspect offer method is performed.

Present invention also provides a kind of chip system, which may include processor, realize for communication device Function involved in above-mentioned various aspects, for example, generate, receive, send, or processing the above method involved in data and/ Or information.In a kind of possible design, the chip system further includes memory, the memory, for saving communication dress Set necessary program instruction and data.The chip system, can be made of chip, also may include chip and other deviding devices Part.The chip system may be a kind of device.

It should be understood that any device or system or computer storage medium or computer program product of above-mentioned offer It is used to execute corresponding method presented above, therefore, the attainable beneficial effect of institute can refer in corresponding method Beneficial effect, details are not described herein again.

It should be noted that it is provided by the embodiments of the present application above-mentioned for storing the device of computer instruction or computer program, Such as, but not limited to, above-mentioned memory, computer readable storage medium and communication chip etc. all have non-volatile (non- transitory)。

Detailed description of the invention

A kind of configuration diagram for communication system that Fig. 1 is applicable in by technical solution provided by the embodiments of the present application；

Fig. 2 is a kind of schematic diagram of PDU session provided by the embodiments of the present application；

Fig. 3 is a kind of interaction schematic diagram one of method for managing PDU session provided by the embodiments of the present application；

Fig. 4 is a kind of interaction schematic diagram two of method for managing PDU session provided by the embodiments of the present application；

Fig. 5 A is the process i.e. Connection that a kind of terminal provided by the embodiments of the present application is entered pause state by connected state The schematic diagram of Suspend process；

Fig. 5 B is the process i.e. Connection that a kind of terminal provided by the embodiments of the present application is entered connected state by pause state The schematic diagram of Resume process；

Fig. 6 A is the schematic diagram for the process that a kind of PDU session provided by the embodiments of the present application is entered dormant state by activated state；

Fig. 6 B is a kind of PDU session provided by the embodiments of the present application by dormant state into the schematic diagram for activating the process into state；

Fig. 7 is a kind of schematic diagram for the process for establishing PDU session provided by the embodiments of the present application；

Fig. 8 is a kind of structural schematic diagram of session management network element provided by the embodiments of the present application；

Fig. 9 is a kind of structural schematic diagram of access network equipment provided by the embodiments of the present application；

Figure 10 is a kind of structural schematic diagram of terminal installation provided by the embodiments of the present application；

A kind of structural schematic diagram for communication equipment that Figure 11 is applicable in by technical solution provided by the embodiments of the present application.

Specific embodiment

Technical solution provided by the embodiments of the present application can be applied in wireless communication system, which can be with It is 5G system, or in other following communication systems.Can certainly be long term evolution (long term evolution, LTE) system, LTE evolution (LTE-Advanced, LTE-A) system etc..By taking wireless communication system is 5G system as an example, such as Fig. 1 institute Show, by a kind of configuration diagram for communication system that technical solution provided by the embodiments of the present application is applicable in.

In Fig. 1, communication system may include: terminal 10, RAN equipment 20, core net 30 and data network (data Network, DN) 40.Wherein, RAN equipment is referred to as access network (access network, AN) equipment.Core net 30 In core network element (or referred to as core net functional network element) may include: access and mobile management function to ps domain (access And mobility management function, AMF) network element 301, SMF network element 302, policy control functions (policy Control function, PCF) network element 303, UPF network element 304 and uniform data management (unified data Management, UDM) network element 305 etc..

UE10 is communicated by next generation network (next generation, N) interface 1 (abbreviation N1) with AMF network element 301. RAN equipment is communicated by N2 interface (abbreviation N2) with AMF network element 301, is communicated by N3 interface (abbreviation N3) with UPF network element 304. AMF network element 301 is communicated by N11 interface (abbreviation N11) with SMF network element 302, and N15 interface (abbreviation N15) and PCF network element are passed through 303 communications.SMF network element 302 is communicated by N7 interface (abbreviation N7) with PCF network element 303, and N4 interface (abbreviation N4) and UPF are passed through Network element 304 communicates, and is communicated by N10 interface (abbreviation N10) with UDM network element 305.UPF network element 304 passes through N6 interface (abbreviation N6) It is communicated with DN40.Connection between above-mentioned each network element can be wireless connection or wired connection, in order to facilitate intuitive earth's surface Show the connection relationship between each network element, is illustrated in Fig. 1 using solid line.

Terminal 10 may include the various handheld devices with wireless communication function, mobile unit, wearable device, calculating Equipment or the other processing equipments for being connected to radio modem；Can also include subscriber unit (subscriber unit), Cellular phone (cellular phone), smart phone (smart phone), wireless data card, personal digital assistant (personal digital assistant, PDA) computer, radio modem (modem), hand-held is set plate computer Standby (handheld), laptop computer (laptop computer), wireless phone (cordless phone) or wireless local Loop (wireless local loop, WLL) platform, machine type communication (machine type communication, MTC) Terminal, user equipment (user equipment, UE), mobile station (mobile station, MS), terminal device (terminal ) or trunk subscriber equipment etc. device.Wherein, trunk subscriber equipment for example can be 5G home gateway (residential Gateway, RG).For convenience of description, in the application, these equipment are referred to as terminal (terminal).

RAN equipment 20 may be used to provide wireless connection, between terminal 10 and core net 30.RAN equipment 20 can be with But it is not limited to include base station, evolved base station (evolved node base station, eNB), next generation base station (next Generation node base station, gNB), novel radio electricity base station (new radio eNB), macro base station, micro- base It stands, high frequency base station or send and receive point (transmission and reception point, TRP), non-3 GPP access network The equipment such as network (such as WiFi) and/or non-3 gpp interworking function (non-3GPP interworking function, N3IWF).It needs It is noted that RAN equipment 20 hereinafter can be understood as the network element in RAN, it is described collectively, hereafter repeats no more herein.

AMF network element 301 can be used for connection management, mobile management, registration management, access authentication and authorization, accessibility Management, safe context management and selection of SMF network element 302 etc..SMF network element 302 can be used for session management such as session Foundation, modification and release etc., the selection of UPF network element 304 and control, business and conversation continuity (service and session Continuity) the selection and roaming service etc. of mode.PCF network element 303 may be used to provide policy control service and obtain Take the signing information etc. of strategic decision-making.UPF network element 304 can be used for handling the event with user face, such as transmission or routing number According to packet, detection data packet, report portfolio, processing service quality (quality of service, QoS), Lawful Interception, storage Downlink data packet etc..UDM network element 305 can be used for storing the subscription data etc. of user.

DN40, such as can be carrier service, linking Internet or third party's service etc..

It should be understood that although it is not shown, above-mentioned 5G network is also possible that other network elements, such as network slice selection Function (network slice selection function, NSSF) network element, network storage function (network Repository function, NRF) network element, authentication service function (authentication server function, AUSF) open functional network element (the network of network element, application function (application function, AF) network element and ability Exposure function, NEF) network element etc., the application is not especially limited this.

It should be noted that the interface name between each network element in Fig. 1 is an example, interface in specific implementation Name may be other names, and the embodiment of the present application is to this without limiting.

It should be noted that each network element in Fig. 1, such as terminal, RAN equipment, AMF network element, SMF network element, PCF network element, UPF Network element and UDM network element etc. are only a names, and name does not constitute restriction to equipment itself.In 5G network and the following others In network, these network elements can also be that other names, the embodiment of the present application are not especially limited this.For example, AMF network element is also It is possible that be replaced by AMF perhaps the SMF such as AMF entity network element it is also possible to be replaced by SMF SMF entity etc., herein into Row is described collectively, and repeats no more below.

In order to facilitate technical solution provided by the present application is understood, it is situated between below to technology involved in the application and term It continues.

The state of terminal includes connection (connected) state and idle (idle) state.Wherein, the user in the 4G network architecture Pause (suspend) state is proposed in face transmission enhancing technology.Pause state is one kind of Idle state.Specifically, suspending in connection In (Connection Suspend) process, retain the context of terminal and the context of carrying, so that terminal enters pause state. When terminal there are data to need to send, (Connection Resume) process recovering bearing can be restored by connection, so that eventually End enters connected state, without initiating service request (Service Request) process, so as to quick recovering bearing.

PDU session is the connection between terminal and DN (i.e. DN40 in Fig. 1), for providing PDU connection service.Wherein, Connection type can be agreement (internet protocol, the IP) connection, Ethernet connection or non-knot interconnected between network Structure data connection etc..The PDU connection service that 5G core net is supported, refers to and provides terminal and by data network title (data Network name, DNN) determine DN between PDU exchange service.Terminal can be initiated to establish one or more PDU sessions, To be connected to identical DN or different DN.Terminal can based on one group of core network element (such as SMF network element, PCF network element and UPF network element etc.) it initiates to establish PDU session.

As shown in Fig. 2, being a kind of schematic diagram of PDU session provided by the embodiments of the present application.In Fig. 2, terminal initiation is built PDU session 1, PDU session 2 and PDU session 3 are stood.Wherein, PDU session 1 is connected with PDU session 2 by different UPF network elements To DN1, PDU session 3 is connected to DN2.Terminal described in this application initiates the PDU session established, it is possible to understand that for by terminal Trigger the PDU session established.

The state of PDU session includes activated state, dormant state and deactivated state.Wherein, dormant state is that the embodiment of the present application mentions A kind of state that can be, but not limited to the PDU session applied to 5G communication system out.The name of the state of PDU session is not right The state of PDU session itself constitutes restriction.This name of the dormant state of PDU session is an example, in the specific implementation, PDU The dormant state of session may also be other names, for example, it may be pause state (the Suspend State or of PDU session Suspend Status or Pause Status) etc..

When PDU session is in activated state, the user face resource (being referred to as the connection of user face) and control plane of PDU session Resource is it has been established that terminal and DN can transmit data by the PDU session.Wherein, user face resource may include user Face interface-free resources such as Data Radio Bearer (data radio bearer, DRB).Control plane resource may include control plane sky Mouth resource such as Signaling Radio Bearer (signaling radio bearer, SRB).The user face resource of one PDU session can To include Tunnel Identifier, the Tunnel Identifier of PDU session may include the RAN equipment that the PDU session is passed through tunnel information and The tunnel information for the UPF network element that the PDU session is passed through, the RAN equipment and UPF network element that PDU session is passed through can be with reference to figures 2.In general, saving the tunnel information of UPF network element in RAN equipment, the tunnel information of RAN equipment is saved in UPF network element.In this way, RAN Equipment and UPF network element may be implemented to send data to opposite end by the tunnel information of the opposite end saved.

When PDU session is in dormant state, the user face interface-free resources of PDU session are released, the RAN stored in UPF network element The tunnel information of equipment is released, and terminal and DN cannot transmit data by the PDU session, also, in RAN equipment and terminal Remain the configuration information of user face interface-free resources and the context of PDU session.Wherein, user face interface-free resources match confidence Breath, refers to the configuration information for establishing the user face interface-free resources, such as may include the configuration information etc. of DRB.RAN equipment The context of the PDU session of middle reservation can be, but not limited to comprise at least one of the following: QoS information, the mark of PDU session letter Breath, the tunnel information of UPF network element, single network slice selection auxiliary information (single network slice selection Assistance information, S-NSSAI), session aggregate maximum bit rate (aggregate maximum bit Rate, AMBR), the type of PDU session etc..The context of the PDU session retained in terminal can be, but not limited to include with down toward Few one kind: QoS information, the identification information of PDU session, distribution the 4th edition (internet protocol of Internet protocol Version 4, IPv4) address or IPv6 prefix, session and service continuity (wession and wervice Continuity, SSC) mode, the type of PDU session etc..When being in dormant state about PDU session, SMF network element and UPF network element The context of the PDU session of middle preservation, when being in deactivated state with PDU session, the PDU meeting that is saved in SMF network element and UPF network element The context of words can correspond to it is identical, specifically can be with reference to hereafter.

When PDU session is in deactivated state, the user face resource and control plane resource of PDU session remain part letter Breath, terminal and DN cannot transmit data by the PDU session.For example, remaining PDU session in SMF network element and UPF network element Context, such as can be, but not limited to comprise at least one of the following: QoS information, type of S-NSSA, DNN, PDU session etc.. When PDU session is in deactivated state, RAN equipment does not retain the context of the PDU session usually.

By described above it is found that when PDU session is in different conditions, the PDU session that retains in different network elements it is upper It hereafter can be different.It is described collectively, hereafter repeats no more herein.In general, the context of PDU session described below is The context of the PDU session saved in RAN equipment and terminal.It should be noted that in the application, network element (such as RAN equipment or end End etc.) retain a certain information, it is possible to understand that are as follows: the information is inherently preserved in the network element, and not discharging (or not deleting) should Information.Or, it can be understood as network element is not directed to the information and executes any operation.

For the different conditions of clear comparison PDU session, in table 1 by taking the information of NE management includes information 1~5 as an example, Illustrate that PDU is under different conditions, the information of part network element (such as terminal, the RAN equipment and UPF network element) management in network. Wherein, the information 2~4 of NE management specifically may be considered the information 2~4 of network element preservation.Wherein, information 1 indicates PDU meeting The user face interface-free resources of words.Information 2 indicates the configuration information of the user face interface-free resources of PDU session.Information 3 indicates that RAN is set The context for the PDU session that standby or terminal retains.The tunnel information of the expression UPF network element of information 4.The tunnel of the expression RAN equipment of information 5 Road information.

Table 1

It should be noted that table 1 is merely illustrative, do not constitute in the state of PDU session involved in the application in network The restriction of the information of management.For example, when PDU session is in deactivated state, not in GC group connector, RAN equipment and UPF network element not Any information of the PDU session is managed, but represents and does not manage above- mentioned information 1~5.For example, PDU session is in any of the above-described shape When state, the other information of the PDU session is not managed in GC group connector, RAN equipment and UPF network element, such as can also manage PDU Identification information, state of session etc..For example, when PDU session is in any of the above-described state, not in other network elements in GC group connector The state etc. that PDU session can also be managed in the information of the PDU session, such as SMF network element is not managed.

When terminal is in connected state, there are signaling connection between terminal and core net, which initiates any PDU established Session may be at activated state, dormant state or deactivated state.When terminal is in idle, which initiates any PDU meeting established Words may be at dormant state or deactivated state.Relationship between the state of terminal and the state of PDU session, can be as shown in table 2.

Table 2

Hereinafter, being carried out in conjunction with method of the described above and attached drawing to management PDU session provided by the embodiments of the present application Explanation.Specifically, being illustrated so that the embodiment of the present application is applied to system architecture as shown in Figure 1 as an example. Based on this, session management network element described in this application specifically can be the SMF network element in Fig. 1, access described in this application Net equipment specifically can be the RAN equipment in Fig. 1.

As shown in figure 3, for a kind of interaction schematic diagram for the method for managing PDU session provided by the embodiments of the present application.Fig. 3 institute The method shown specifically provides the method for making PDU session enter dormant state by activated state.This method may include steps of:

S101:SMF network element initiates to determine at least one (i.e. one or more) PDU meeting in the PDU session established from terminal Words.At least one PDU session is in activated state.At least one PDU session can be the terminal initiate establish part or Whole PDU sessions.At least one PDU session, it is possible to understand that are as follows: wait enter at least one PDU session of dormant state.

Technical solution provided in this embodiment can be applied to terminal and be in the scene of connected state.For example, can apply In the scene that terminal is constantly in connected state (terminal is constantly in connected state during specifically referring to execute the present embodiment), Also it can be applied to terminal from the scene that connected state enters pause state.

SMF NE management has terminal to initiate the state for each PDU session established, and therefore, SMF network element can determine terminal Initiate whether each PDU session established is the PDU session in activated state.

For terminal initiates any PDU session in activated state established, in one possible implementation, When SMF network element determine the PDU session need enter dormant state, can be using the PDU session as at least one PDU session One PDU session.In the implementation, it is believed that (either default): each PDU session that the terminal is initiated to establish (or Each PDU session for being in activated state) it is able to enter dormant state.Wherein, how the embodiment of the present application is to determining a PDU meeting Whether words need to enter dormant state without limiting.It is exemplified below several possible examples:

As an example, when the PDU session within a preset period of time (or in certain time) needs to pass without data When defeated, it is believed that the PDU session needs to enter dormant state.For example, UPF network element detects PDU session defined inactive In period (inactivity period/inactivity timer) without data transmit, then will test result notice to SMF network element.

As an example, in switching flow, if all QoS flows (QoS flow) of a PDU session are all by target RAN equipment such as target next generation RAN (next generation RAN, NG-RAN) equipment refusal, then the PDU session need into Enter dormant state.

As an example, for LADNPDU session, if terminal is out of the coverage LADN, the PDU session It needs to enter dormant state, wherein AMF network element can notify SMF network element terminal out of the coverage LADA.It should be understood that LADN PDU session is a seed type of PDU session.

As an example, (the i.e. connection pause process (Connection in the process that terminal enters pause state Suspend procedure)), the PDU session in activated state which initiates to establish needs to enter dormant state.This be by When terminal is in pause state, each PDU session which initiates to establish is not at activated state, therefore, in this case, can It is required to enter dormant state in the PDU session of activated state to think that the terminal initiates each of foundation.Wherein, RAN equipment to AMF network element initiates the connection pause process, and the RRC connection of instruction terminal will be suspended.This message is sent to SMF by AMF network element Network element.

As an example, if terminal is out of the region of permission, each of terminal initiation foundation is in activated state PDU session be required to enter dormant state, wherein AMF network element can notify SMF network element terminal out of the region of permission.

For terminal initiates any PDU session in activated state established, in alternatively possible implementation In, when SMF network element determine the PDU session need enter dormant state, and be able to enter dormant state (i.e. have into dormant state category Property/function) when, it can be using the PDU session as a PDU session at least one PDU session.In other words, this is extremely Each PDU session in a few PDU session is to be able to enter the PDU session of dormant state.In the implementation, it is believed that It is to need to set before executing S101 that each PDU session (or each PDU session for being in activated state), which is able to enter dormant state, It sets.

The embodiment of the present application is able to enter the specific implementation of dormant state without limiting to PDU session how is arranged. It is exemplified below several possible implementations:

Mode 1:SMF network element is according to session management (session management, SM) subscription data of terminal, terminal At least one of strategy and being locally configured for SMF network element, determine that a PDU session is able to enter dormant state.

For example, SM subscription data of the SMF network element according to terminal, determines that a PDU session is able to enter dormant state.For example, SMF network element determines that a PDU session is able to enter dormant state according to the strategy of terminal.For example, SMF network element is according to SMF network element It is locally configured, determines that a PDU session is able to enter dormant state.For example, SM subscription data and terminal of the SMF network element according to terminal Strategy, determine that a PDU session is able to enter dormant state.For example, SM subscription data and SMF net of the SMF network element according to terminal Being locally configured for member, determines that a PDU session is able to enter dormant state.For example, strategy and SMF net of the SMF network element according to terminal Being locally configured for member, determines that a PDU session is able to enter dormant state.For example, SMF network element according to the SM subscription data of terminal, The strategy of terminal and being locally configured for SMF network element, determine that a PDU session is able to enter dormant state.

The SM subscription data of terminal may include the SM subscription data that SMF network element is locally stored and SMF network element by with Information exchange, the SM subscription data of the terminal of acquisition are carried out between UDM network element.The strategy of terminal may include the sheet of SMF network element The strategy etc. of ground strategy (such as operator is in strategy of SMF network element configuration) and PCF network element to SMF network element configuration.If terminal Strategy be strategy of the PCF network element to SMF network element configuration, then SMF network element can pass through between PCF network element carry out information friendship Mutually, the strategy is obtained.Being locally configured for SMF network element may include strategy (the i.e. local of SMF network element that SMF network element is locally stored Strategy) and the subscription data etc. that is locally stored of SMF network element.

Optionally, if the SM subscription data of terminal, the strategy of terminal and SMF network element at least one of are locally configured packet Containing for indicating that some PDU session of the terminal is able to enter the information of dormant state, then SMF network element can consider the PDU session It is able to enter dormant state.That is, the application supports the sheet in the SMF subscription data of terminal, the strategy of terminal and SMF network element Any one or more of ground configuration middle increase for indicating that PDU session is able to enter dormant state (or for indicating that PDU session is It is no to be able to enter dormant state) information.

It should be noted that the information that expression PDU session is able to enter dormant state can be based on terminal granularity, it can also To be based on PDU session granularity；If indicating that PDU session is able to enter the information of dormant state is based on terminal granularity, explanation All PDU sessions that the terminal is initiated to establish are able to enter dormant state (for example, if terminal has the energy of user face transmission enhancing Power, then all PDU sessions that the terminal is initiated to establish are able to enter suspend mode)；If indicating, PDU session is able to enter dormant state Information is then to illustrate that the PDU session is able to enter dormant state based on PDU session granularity.

Mode 2:SMF network element receives the second information that terminal is sent, and determines that a PDU session can be into according to the second information Enter dormant state.Second information includes the identification information of the PDU session and indicates that the PDU session is able to enter the information of dormant state.

The application to mode 2 specifically occur in which process and the second information specifically carry the process which Without limiting in signaling (or message).For example, mode 2 can occur in the process for establishing the PDU session, the situation Under, the second information can carry in PDU session establishment (PDU Session Establishment) message.

Indicate that PDU session is able to enter the information of dormant state, it can be understood as be to be used to indicate the PDU session to be able to enter The instruction information of dormant state.Wherein, the application to indicate PDU session be able to enter dormant state information specific implementation not It is defined.For example, can indicate that the PDU session is able to enter dormant state by binary number " 1 ", or pass through binary system " 0 " is counted to indicate that the PDU session is able to enter dormant state.For another example, there can be the enhancing of user face special by instruction PDU session Sign, to indicate that the PDU session is able to enter dormant state.Certain the application is without being limited thereto.

It should be noted that the identification information of to be with the second information herein include a PDU session and indicating the PDU session Be able to enter the instruction information of dormant state, for be illustrated.When specific implementation, the second information may include multiple PDU meetings The identification information of words, and indicate that multiple PDU session is able to enter the information of dormant state.Wherein, multiple PDU session energy are indicated Enough it can be multiple set for indicating single PDU sessions and being able to enter the information of dormant state into the information of dormant state, it can also be with It is other information.For example, it is assumed that indicate that single PDU session is able to enter dormant state using by binary number " 1 ", then second Information may include: the identification information of PDU session 1,2,3, and indicate that PDU session 1,2,3 is able to enter the letter of dormant state Breath can be binary number " 111 ".For another example, the second information may include: the identification information and binary system of PDU session 1,2,3 Number " 1 ", wherein binary number " 1 " is to indicate that PDU session 1,2,3 is able to enter the information of dormant state.Other examples are not another One enumerates.

Mode 3:SMF network element receives the second information that terminal is sent, according to the SMF subscription data of terminal, the strategy of terminal With SMF network element at least one of be locally configured and the second information, determine that a PDU session is able to enter dormant state.Its In, the second information includes the identification information of the PDU session and indicates that the PDU session is able to enter the information of dormant state.In mode 3 The explanation of related content can be with reference to above, and details are not described herein again.

It should be understood that SMF network element can be determined in 1~3 any one mode through the above way that is such as, but not limited to PDU session is able to enter after dormant state, is saved the PDU session and is able to enter this information of dormant state, thus in subsequent needs When determining whether PDU session is able to enter dormant state, the information saved is directly inquired.For example, SMF network element can be to be managed Each PDU session of reason increases a flag bit, to mark whether the PDU session is able to enter dormant state, is based on this, is executing When S101, SMF network element passes through the flag bit of inquiry PDU session, you can learn that whether the PDU session is able to enter dormant state.

Based on described above, optionally, S101 may include: SMF network element according to the SMF subscription data of terminal, end The strategy at end, SMF network element be locally configured and at least one of the second information, initiated in the PDU session established from terminal Determine at least one PDU session.

S102:SMF network element sends the first information to RAN equipment.Wherein, the first information may include at least one PDU The identification information of session, the first information are used to indicate the user face interface-free resources that RAN equipment discharges at least one PDU session, Retain the configuration information of the user face interface-free resources of at least one PDU session and the context of at least one PDU session.

It should be understood that the information exchange between SMF network element and RAN equipment usually requires to be forwarded by AMF network element.

S103:RAN equipment receives the first information.

S104:RAN equipment according to the first information, discharges the user face interface-free resources of at least one PDU session, and retaining should The configuration information of the user face interface-free resources of at least one PDU session and the context of at least one PDU session.

Optionally, after executing S104, RAN equipment can be repaired the state of at least one PDU session by activated state It is changed to dormant state.

S105:RAN equipment sends the 4th information according to the first information, to terminal.Wherein, the 4th information may include this extremely The identification information of a few PDU session, the 4th information, which is used to indicate terminal and discharges the user face of at least one PDU session, eats dishes without rice or wine Resource, retain the user face interface-free resources of at least one PDU session configuration information and at least one PDU session up and down Text.

S106: terminal receives the 4th information.

S107: terminal discharges the user face interface-free resources of at least one PDU session according to the 4th information, retains user The context of the configuration information of face interface-free resources and at least one PDU session.

Optionally, after executing S107, the state of at least one PDU session can be revised as by terminal by activated state Dormant state.

Above-mentioned S101~S107 is described in the process that PDU session enters dormant state by activated state, SMF network element, RAN Step performed by equipment and terminal.In addition the process can also be included the steps that performed by SMF network element and UPF network element, the mistake Journey can enter step performed by SMF network element and UPF network element in the process of deactivated state as activated state with reference to PDU session.

The process that PDU session is entered dormant state by activated state is present embodiments provided, when PDU session enters dormant state, Remained in terminal and/or RAN equipment the user face interface-free resources of the PDU session configuration information and the PDU session up and down Text, in this way, eating dishes without rice or wine to provide according to the user face of the PDU session of reservation when there is data to need to be transmitted by the PDU session The configuration information in source can the fast quick-recovery PDU session user face interface-free resources, and do not need to reacquire the upper of PDU session Hereafter, thus facilitate save PDU session enter the time required for activated state.Further, in this embodiment by SMF network element It initiates to determine that at least one is in the PDU session of activated state in the PDU session established from terminal, then triggers this at least one PDU session enters dormant state.That is, can realize that PDU session enters dormant state by activated state based on PDU session granularity. It selects any one or more PDU sessions entering dormant state by activated state according to demand in this way, helping to realize, increases pipe Manage the flexibility of PDU session.

As shown in figure 4, for a kind of interaction schematic diagram for the method for managing PDU session provided by the embodiments of the present application.Fig. 4 institute The method shown specifically provides the method for making PDU session enter activated state by dormant state.This method may include steps of:

S201: terminal establishes (or recovery) the PDU session according to the configuration information of the user face interface-free resources of PDU session User face interface-free resources.Wherein, the PDU session is that terminal is initiated to establish and be in the PDU session of dormant state, such as can be with It is any one PDU session at least one PDU session in embodiment shown in Fig. 3.The configuration information is the PDU session When into dormant state, retain the configuration information of the user face interface-free resources of the PDU session in the terminal.

Optionally, terminal can need to transmit data by the PDU session in dormant state determining, such as terminal needs By in dormant state PDU session to DN send data or receive DN send data when, determine the PDU session need into Enter activated state, executes S201 to trigger.

It is to be illustrated for a PDU session is entered activated state by dormant state in the present embodiment, may be used also certainly Multiple PDU sessions are entered activated state by dormant state simultaneously.

Optionally, after executing S201, the state of the PDU session can be revised as activated state by dormant state by terminal.

S202: terminal sends the 5th information to RAN equipment；Wherein, the 5th information includes the identification information of the PDU session, 5th information is used to indicate the user face interface-free resources that RAN equipment establishes the PDU session.

S203:RAN equipment receives the 5th information.

For S204:RAN equipment according to the configuration information of the 5th information and the user face interface-free resources of the PDU session, establishing should The user face interface-free resources of PDU session.Wherein, when which is that the PDU session enters dormant state, it is retained in RAN equipment In the PDU session user face interface-free resources configuration information.

Optionally, after executing S204, the state of the PDU session can be revised as activating by RAN equipment by dormant state State.

S205:RAN equipment sends third information to SMF network element, and third information includes the identification information of the PDU session.The Three information are used to indicate the user face interface-free resources that the PDU session has been established in access network equipment.

S206:SMF network element receives third information.Optionally, after executing S206, SMF network element can be by the PDU session State is revised as activated state by dormant state.

Above-mentioned S201~S206 is described in the process that PDU session enters activated state by dormant state, SMF network element, RAN Step performed by equipment and terminal.In addition the process can also be included the steps that performed by SMF network element and UPF network element, the mistake Journey can enter step performed by SMF network element and UPF network element in the process of activated state as deactivated state with reference to PDU session.

The process that PDU session is entered activated state by dormant state is present embodiments provided, is stopped when there are data to need to pass through to be in When the PDU session of dormancy state is transmitted, network can be fast according to the configuration information of the user face interface-free resources of the PDU session of reservation The user face interface-free resources of the quick-recovery PDU session, and do not need to reacquire the context of PDU session, therefore facilitate It saves PDU session and enters the time required for activated state.PDU meeting can be realized based on PDU session granularity by present embodiments providing Words enter activated state by dormant state.It is selected according to demand by any one or more PDU sessions in this way, helping to realize by suspend mode State enters activated state, compared to the technical solution that PDU session is entered to activated state based on terminal granularity by dormant state, can save money Source expense, and increase the flexibility of management PDU session.

It should be understood that when terminal is in connected state, it may be necessary to execute switching flow, i.e. source RAN equipment triggers Need to switch to " terminal is connect with source RAN equipment " process of " terminal is connect with target RAN equipment ", in this case, storage The RAN equipment for having the context of the PDU session in dormant state is specifically source RAN equipment.Optionally, when executing switching flow, Source RAN equipment can first determine that terminal initiates PDU session establish and in dormant state, then, by identified PDU session Context be sent to target RAN equipment.It should be understood that when needing the PDU session entering activated state by dormant state, eventually End can send the information the (the such as above-mentioned 5th for being used to indicate the user face interface-free resources for establishing the PDU session to target RAN equipment Information).If the optional implementation can be applied in any embodiment provided by the present application without obviously conflicting.

It is illustrated below by way of method of the specific example to management PDU session provided above.

As shown in Figure 5A, the process of pause state is entered i.e. by connected state for a kind of terminal provided by the embodiments of the present application The schematic diagram of Connection Suspend process.The process may include at least one the PDU session for initiating to establish by terminal Enter the process of dormant state by activated state, and/or, other PDU sessions that terminal initiates foundation are entered by activated state and are deactivated The process of state living.It is hereinafter to include: to enter at least one PDU session that terminal is initiated to establish by activated state in the process Dormant state, and other PDU sessions that terminal is initiated to establish are entered by activated state for the process of deactivated state and be illustrated 's.Method shown in Fig. 5 A may include steps of:

S301:RAN equipment sends terminal contexts pause request (UE Context Suspend to AMF network element Request) message.Wherein, terminal contexts pause request message is for requesting the state of terminal entering pause by activated state State.Terminal contexts pause request message can carry PDU session identification (identity, ID) list, in addition it can carry Cause value (Cause) etc., the cause value can be terminal and need to enter pause state.It include that terminal is sent out in the PDU session id list Act the ID for the PDU session in activated state established.The ID of PDU session may be considered one kind of the identification information of PDU session Specific implementation.

S302:AMF network element suspends request message according to terminal contexts, retains the context of the terminal.AMF network element to SMF (s) network element (i.e. one or more SMF network element), which is sent, updates session management context (Nsmf_PDUSession_ UpdateSMContext) message.The ID of one or more PDU sessions can be carried by updating session management context message, this one The ID of a or multiple PDU sessions belongs to PDU session id list described in S301；In addition it can carry cause value etc., the original Need to enter pause state because value can be terminal.

Specifically, AMF network element is sent respectively to each SMF network element for managing PDU session indicated by the PDU session id list Update session management context message.For example, if in PDU session id list including the ID of PDU session 1~4, and PDU session 1,2 It is to be managed by SMF network element 1, PDU session 3 is managed by SMF network element 2, then AMF network element sends more new session to SMF network element 1 Managing context message, ID and cause value (such as terminal needs to enter pause state) in the message comprising PDU session 1~3, and It is sent to SMF network element 2 and updates session management context message, the ID comprising PDU session 4 and cause value are (as eventually in the message End needs to enter pause state).

For example, example as shown in connection with fig. 3, above-mentioned S101, it is believed that " at least one the PDU session " in S101 is specific It is " list of PDU session id " in the present embodiment, that is, thinks that terminal is initiated each of foundation and is both needed in the PDU session of activated state To enter dormant state.But optionally, not each PDU session is able to enter PDU session, and therefore, it is necessary to pass through to execute S303 determines which PDU session is able to enter dormant state.

S303:SMF (s) network element, which determines, updates whether the PDU session that session management context message carries is able to enter not Dormancy state.

Specifically, for any PDU session, SMF network element can by inquire the PDU session for marking the PDU meeting Whether words are able to enter the flag bit (hereinafter referred to blip position) of dormant state, to determine whether the PDU session can be into Enter dormant state.For example, SMF network element 1 can inquire the blip position of PDU session 1~3, thus really based on the example in S302 Determine whether PDU session 1~3 is able to enter dormant state；SMF network element 2 can inquire the blip position of PDU session 4, so that it is determined that Whether PDU session 4 is able to enter dormant state.

S304:SMF (s) network element sends N4 session modification request (N4Session Modification to UPF network element Request) message.N4 session modification request message can indicate that UPF network element deletes Tunnel Identifier, specifically one or more The RAN equipment tunnel information that PDU session is passed through.The ID of one or more PDU session belongs to the column of the PDU session id in S301 Table.

For example, SMF network element 1 can be to the UPF net of the Tunnel Identifier of management PDU session 1~3 based on the example in S302 Member sends N4 session modification request message, which carries the tunnel for the RAN equipment that PDU session 1~3 is passed through Road information；SMF network element 2 can send N4 session modification request message to the UPF network element of the Tunnel Identifier of management PDU session 4, should N4 session modification request message carries the tunnel information for the RAN equipment that PDU session 4 is passed through.Wherein, PDU session 1~3 is managed The UPF network element of the Tunnel Identifier of the UPF network element and management PDU session 4 of Tunnel Identifier, can be identical or not identical.Management The RAN equipment of PDU session 1~4 is the RAN equipment in above-mentioned S301.

S305:UPF network element deletes N4 session modification request and requests the Tunnel Identifier deleted, and then sends out to SMF (s) network element N4 session modification is sent to respond (N4Session Modification Response) message.

Since no matter PDU session by activated state enters deactivated state, or dormant state is entered by activated state, it should for management For the UPF network element of PDU session, it is required to delete Tunnel Identifier (the i.e. PDU session RAN equipment that is passed through of the PDU session Tunnel information), therefore, the application is to the sequencing of S304~S305 and S303 without limiting.For example, can first carry out S304~S305 executes S303 again, can also first carry out S304~S305 and execute S303 again, can also execute S304~S305 During execute S303 etc..

S306:SMF (s) network element is sent to AMF network element updates session management context response (Nsmf_PDUSession_ UpdateSMContext Response) message.Wherein, the carrying of session management context response information is updated to need to enter suspend mode The ID of the PDU session of state, and need the ID into the PDU session of deactivated state.Wherein, the ID of these PDU sessions belongs to PDU session id list described in S301.

It should be noted that " carrying the PDU needed into a certain state in message in any embodiment of the application The ID " of session with " ID of the PDU session is carried in the message and indicate the PDU session need into the state instruction believe The meaning of breath " is identical, and the two may be used interchangeably, or can also indicate that PDU session needs to enter certain by message name Kind state, the application are not construed as limiting this.In any embodiment of the application, " in message carry need by a state into Enter the ID " of the PDU session of another state with " ID of the PDU session is carried in the message and indicate the PDU session need by The meaning that one state enters the instruction information of the PDU session of another state is identical, and the two may be used interchangeably, or It can also indicate that PDU session needs to enter certain state by certain state by message name, the application is not construed as limiting this. Wherein, message here can update session management context response information, terminal contexts pause sound Message etc. is answered, state here can be activated state, dormant state, deactivated state etc..

Based on the example in S303, if SMF network element 1 determines that PDU session 1,2 is able to enter dormant state, PDU session 3 cannot Into dormant state, then in S306, update session management context response information that SMF network element 1 is sent to AMF network element carry with Lower information: the PDU session for being able to enter dormant state is PDU session 1,2, and the PDU session that not can enter dormant state is PDU session. If SMF network element 2 determines that PDU session 4 is able to enter dormant state, in S306, update meeting that SMF network element 1 is sent to AMF network element Talk about managing context response message and carry following information: the PDU session for being able to enter dormant state is PDU session 4.

S307:AMF network element sends terminal contexts pause response (UE Context Suspend to RAN equipment Response) message.Wherein, terminal contexts pause response message carries the ID needed into the PDU session of dormant state, and Need the ID into the PDU session of deactivated state.

For example, example as shown in connection with fig. 3, it is believed that S306~S307 is the specific implementation of above-mentioned S102, specifically, It is considered that the first information, which is carried, is sent to AMF network element by SMF network element in updating session management context response information, then take Band hereafter suspends in response message at the terminal is sent to RAN equipment by AMF network element.

Based on context S308:RAN equipment suspends response message, for needing every PDU session (example into dormant state As above-mentioned PDU session 1,2,4), discharge the user face interface-free resources of the PDU session, retain the configuration of the user face interface-free resources The state of the PDU session is optionally revised as dormant state by activated state by the context of information and the PDU session.And it is right In needing every PDU session (such as above-mentioned PDU session 3) into deactivated state, the user face for discharging the PDU session eats dishes without rice or wine to provide The context in source, the configuration information of the user face interface-free resources and the PDU session, optionally, by the state of the PDU session by Activated state is revised as deactivated state.

When specific implementation, based on context RAN equipment suspends response message, can also retain the context of terminal, and raw At the Resume ID for being directed to the terminal, wherein be used to identify the context of the terminal for the Resume ID of the terminal.Afterwards Continuous, RAN equipment can will be sent to the terminal for the Resume ID of the terminal.In this way, in subsequent execution Connection When Resume process, terminal can will be sent to RAN equipment for the Resume ID of the terminal, so that RAN equipment can be with The context of the terminal is obtained according to the Resume ID for the terminal.Optionally, if executing Connection Resume When process, new RAN equipment is different from old RAN equipment, then new RAN equipment usually requires to send the terminal to old RAN equipment Resume ID is to obtain the context of the terminal on old RAN.

S309:RAN equipment sends wireless heterogeneous networks (radio resource control, RRC) connection temporarily to terminal Stop (Connection Suspend) message.Wherein, RRC connection suspending message can carry the PDU meeting needed into dormant state The ID of words, and need the ID into the PDU session of deactivated state.

For example, example as shown in connection with fig. 3, it is believed that S309 is the specific implementation of S105, specifically, it is considered that The carrying of four information is sent to terminal by RAN equipment in RRC connection suspending message.

S310: terminal is according to RRC connection suspending message, and for needing every PDU session into dormant state, release should The user face interface-free resources of PDU session, retain the configuration information of the user face interface-free resources and the context of the PDU session, can Choosing, the state of the PDU session is revised as dormant state by activated state.And for needing every PDU into deactivated state Session discharges the user face interface-free resources of the PDU session, the configuration information of the user face interface-free resources and the PDU session The state of the PDU session is optionally revised as deactivated state by activated state by context.

The present embodiment may be implemented to be entered in terminal by connected state in the process of pause state, terminal be initiated to establish any One or more PDU sessions enter dormant state by activated state.Description can be with reference to above as described in the present embodiment beneficial effect.

Optionally, in another embodiment provided by the present application, include in the PDU session id list in above-mentioned S301 It is the ID for being able to enter the PDU session of dormant state.In the embodiment, whether PDU session can be able to enter by SMF network element in advance The result notice of dormant state gives RAN equipment, in this way, when executing S301, packet is can be set in PDU session id list in RAN equipment ID containing the PDU session for being able to enter dormant state.In this case, not needing to execute above-mentioned S303.It is, moreover, an optional that due to SMF Network element can give the result notice whether PDU session is able to enter dormant state to RAN equipment in advance, therefore when RAN equipment confirms After terminal needs to enter pause state, and after determining PDU session id list, every PDU session indicated by the list is discharged User face interface-free resources retain the configuration information of the user face interface-free resources and the context of the PDU session, without such as Shown in S308, context pause response message is being received, the user face interface-free resources of the PDU session is just being discharged, retains the use The configuration information of family face interface-free resources and the context of the PDU session.

As shown in Figure 5 B, the process of connected state is entered i.e. by pause state for a kind of terminal provided by the embodiments of the present application The schematic diagram of Connection Resume process.The process may include by terminal initiate establish at least one PDU session by Dormant state enters the process of activated state, and/or, other PDU sessions that terminal is initiated to establish are entered into activation by deactivated state The process of state.It is hereinafter to include: to enter at least one PDU session that terminal initiates foundation by dormant state to swash in the process It is illustrated for state living.Method shown in Fig. 5 B may include steps of:

S401: terminal, which determines, to be needed to enter connected state by pause state.For example, such as needing to send out to DN when there is data to need to transmit When sending data or needing to receive the data of DN transmission, determines and need to enter connected state by pause state.

S402: terminal determines that the dormant state that is currently at for the one or more PDU sessions for needing to transmit data still deactivates State living.Wherein, one or more PDU session can be terminal and initiate some or all of foundation PDU session.It is currently at not The PDU session of dormancy state is to need to be entered by dormant state the PDU session of activated state.

It should be understood that terminal is entered in the process of connected state by pause state, can also include will need to transmit data and PDU session in deactivated state enters activated state, and specific implementation can refer to the prior art, and details are not described herein again.

S403: terminal sends RRC connection recovery request (Connection Resume Request) message to RAN equipment. Wherein, RRC connection recovery request message can carry the ID of one or more PDU session and by one or more PDU Session is entered the instruction information of activated state by dormant state.RRC connection recovery request message restores terminal and RAN equipment for requesting Between control plane interface-free resources and one or more PDU session user face interface-free resources.

S404: for every PDU session in one or more PDU session, terminal and RAN equipment are by carrying out information Interaction, the configuration information of the user face interface-free resources of the PDU session retained respectively according to itself establish (or recovery) the PDU meeting The user face interface-free resources of words, terminal and RAN equipment establish control plane interface-free resources by carrying out information exchange.Optionally, eventually End and RAN equipment can also respectively be modified each state for needing the PDU session for entering activated state by dormant state by dormant state For activated state.

For example, embodiment as shown in connection with fig. 4, it is believed that carry out information exchange, including figure between terminal and RAN equipment Terminal in 4 sends the 5th information to RAN equipment.It is performed simultaneously for example, S404 can be with S403, is also possible to successively execute 's.The application is to this without limiting.

S405:RAN equipment sends RRC connection recovery response (Connection Resume Response) to terminal and disappears Breath.

After executing S405, transmitting uplink data can be carried out by one or more PDU session between terminal and DN, I.e. terminal can send data to DN by one or more PDU session.

S406:RAN equipment sends terminal contexts recovery request (UE Context Resume to AMF network element Request) message.Wherein, terminal contexts recovery request message can carry the ID of one or more PDU session and incite somebody to action One or more PDU session is entered the instruction information of activated state by dormant state.Terminal contexts recovery request message is for referring to The user face interface-free resources for having shown one or more PDU session recovered.This or more can also be carried in the message The tunnel information for the RAN equipment that a PDU session is passed through.

S407:AMF network element is sent to SMF (s) network element updates session management context (Nsmf_PDUSession_ UpdateSMContext) message.Wherein, it updates session management context message and can carry and need to enter activation by dormant state The ID of the PDU session of state.It updates session management context message and has been used to indicate one or more PDU session recovered User face interface-free resources.It, can be by the one or more after SMF (s) network element receives update session management context message The tunnel information for the RAN equipment that PDU session is passed through is sent to UPF network element.

S408:SMF (s) network element sends N4 session modification request message to UPF network element.Wherein, N4 session modification request disappears Breath can carry Tunnel Identifier to be restored, specifically one or more PDU sessions of update session management context message carrying The RAN equipment passed through tunnel information.

The recovery of S409:UPF network element (or preservation) requested Tunnel Identifier to be restored of N4 session modification request message, and to SMF (s) network element sends N4 session modification response message.

After executing S409, downlink data transmission can be carried out by one or more PDU session between terminal and DN, That is DN can send data to terminal by one or more PDU session.

The state of one or more PDU session is revised as activated state by dormant state by S410:SMF (s) network element.

S411:SMF (s) network element is sent to AMF network element updates session management context response (Nsmf_PDUSession_ UpdateSMContext Response) message.

S412:AMF network element sends terminal contexts to RAN equipment and restores response (UE Context Resume Response) message.

The present embodiment may be implemented in the process that terminal enters connected state by pause state, terminal be initiated to establish any One or more PDU sessions enter activated state by dormant state.Description can be with reference to above as described in the present embodiment beneficial effect.

As shown in Figure 6A, enter the process of dormant state by activated state for a kind of PDU session provided by the embodiments of the present application Schematic diagram.Terminal is constantly in connected state in the process.Method shown in Fig. 6 A may include steps of:

S501:SMF network element determines that one or more PDU session needs and is able to enter dormant state.Wherein, this or more A PDU session is the PDU session that terminal initiates that some or all of foundation is in activated state.

How to determine that a PDU session needs to enter dormant state by connected state about SMF network element, and can be by connected state Specific implementation into dormant state can be with reference to above, and details are not described herein again.It should be understood that not having obvious punching In the case where prominent, a kind of specific implementation being provided above can be adapted for the present embodiment.

S502:SMF network element sends N4 session modification request message to UPF network element.N4 session modification request message can refer to Show that UPF network element deletes Tunnel Identifier, specifically the tunnel information of RAN equipment that is passed through of one or more PDU session.

S503:UPF network element deletes N4 session modification request message and requests the Tunnel Identifier deleted, then to SMF network element Send N4 session modification response message.

S504:SMF network element sends N1N2 message to AMF network element and transmits (Namf_Communication_ N1N2MessageTransfer) signaling.Wherein, N1N2 message transmission signaling can carry one or more PDU session ID, and one or more PDU session is needed into the instruction information into dormant state.

S505:AMF network element sends N2 session request (N2Session Request) message according to RAN equipment.Wherein, N2 conversation request message can carry the ID of one or more PDU session, and one or more PDU session is entered and is stopped The instruction information of dormancy state.

For example, embodiment as shown in connection with fig. 3, it is believed that S504~S505 is the specific implementation of above-mentioned S102, specifically , it is believed that the first information, which is carried, is sent to AMF network element by SMF network element in N1N2 message transmission signaling, then carries in N2 RAN equipment is sent to by AMF network element in conversation request message.

S506: for every PDU session in one or more PDU session, RAN equipment discharges the use of the PDU session Family face interface-free resources retain the configuration information of the user face interface-free resources and the context of the PDU session.RAN equipment is by the PDU The state of session is revised as dormant state by activated state.

S507:RAN equipment sets (RRC Connection Reconfiguration) to terminal transmission RRC connection reconfiguration and disappears Breath.Wherein, RRC connection reconfiguration, which sets message, can carry the ID of one or more PDU session, and by the one or more PDU session enters the instruction information of dormant state.

For example, example as shown in connection with fig. 3, it is believed that S507 is the specific implementation of S105, specifically, it is considered that The carrying of four information is set in message in RRC connection reconfiguration is sent to terminal by RAN equipment.

S508: for every PDU session in one or more PDU session, terminal discharges the user face of the PDU session Interface-free resources retain the configuration information of the user face interface-free resources and the context of the PDU session.Terminal is by the PDU session State is revised as dormant state by activated state.

S509: terminal sends RRC connection reconfiguration to RAN equipment and sets response message.

S510:RAN equipment sends N2 conversational response (N2Session Response) message to AMF network element.

S511:AMF network element is sent to SMF network element updates session management context response (Nsmf_PDUSession_ UpdateSMContext) message.

S512:SMF network element retains the context of the PDU session.SMF network element is repaired the state of the PDU session by activated state It is changed to dormant state.

The present embodiment may be implemented when terminal is in connected state, and terminal is initiated to any one or more PDU established Session enters dormant state by activated state.Description can be with reference to above as described in the present embodiment beneficial effect.

As shown in Figure 6B, for a kind of PDU session provided by the embodiments of the present application by dormant state into the process activated into state Schematic diagram.Terminal is constantly in connected state in the process.Method shown in Fig. 6 B may include steps of:

S601: terminal, which determines, to be needed one or more PDU sessions entering activated state by dormant state, for example, when there is data When needing to be in the PDU session transmissions of dormant state by the one or more, determine need by one or more PDU session by Dormant state enters activated state.

S602: terminal sends PDU session recovery request message to RAN equipment.PDU session recovery request message can carry The ID of one or more PDU session, and one or more PDU session is believed by the instruction that dormant state enters activated state Breath.PDU session recovery request message is used for the user face interface-free resources for requesting to restore one or more PDU session.

S603: for every PDU session in one or more PDU recovery, terminal and RAN equipment are by carrying out information The configuration information of interaction, the user face interface-free resources of the PDU session retained respectively according to itself establishes the user of the PDU session Face interface-free resources.In addition, each needs can also be entered the PDU session of activated state by terminal and RAN equipment by dormant state respectively State activated state is revised as by dormant state.

For example, embodiment as shown in connection with fig. 4, it is believed that carry out information exchange, including figure between terminal and RAN equipment Terminal in 4 sends the 5th information to RAN equipment.Above-mentioned S603 can be with S602 to be performed simultaneously, and is also possible to successively execute 's.The application is to this without limiting.

S604:RAN equipment sends PDU session to terminal and restores response message.

After executing S604, transmitting uplink data can be carried out by one or more PDU session between terminal and DN, I.e. terminal can send data to DN by one or more PDU session.

S605:RAN equipment sends PDU session context recovery request message to AMF network element.Wherein, PDU session context Recovery request message can carry the ID of one or more PDU session, and by one or more PDU session by dormant state Into the instruction information of activated state.PDU session context recovery request message restores one or more PDU session for requesting Context.

S606:AMF network element is sent to SMF (s) network element updates session management context message.Wherein, session management is updated Context message can carry the ID of one or more PDU session, and by one or more PDU session by dormant state into Enter the instruction information of activated state.It updates session management context message and has been used to indicate one or more PDU meeting recovered The user face interface-free resources of words, SMF (s) network element receive update session management context message after, can by this or The tunnel information for the RAN equipment that multiple PDU sessions are passed through is sent to UPF network element.

S607:SMF (s) network element sends N4 session modification request message to UPF network element.Wherein, N4 session modification request disappears Breath can carry Tunnel Identifier to be restored, and the specifically update session management context message PDU session that carries is passed through The tunnel information of RAN equipment.

S608:UPF network element restores (or preservation) requested Tunnel Identifier to be restored of N4 session modification request message, and N4 session modification response message is sent to SMF (s) network element.

After executing S608, transmitting uplink data can be carried out by one or more PDU session between terminal and DN, I.e. terminal can send data to DN by one or more PDU session.

S609:SMF (s) network element is modified the state of every PDU session in one or more PDU session by dormant state For activated state.

S610:SMF (s) network element is sent to AMF network element updates session management context response information.

S611:AMF network element sends PDU session context to RAN equipment and restores response message.

The present embodiment may be implemented when terminal is in connected state, and terminal is initiated to any one or more PDU established Session enters activated state by dormant state.Description can be with reference to above as described in the present embodiment beneficial effect.

As shown in fig. 7, being a kind of process for establishing PDU session provided by the embodiments of the present application.This method may include as follows Step:

S701: terminal sends PDU session establishment message to AMF network element.Wherein, PDU session establishment message can carry PDU The ID of session and the transmission enhancing instruction of user face, the transmission enhancing instruction of user face are used to indicate the PDU session and are able to enter not Dormancy state, or not can enter dormant state.

S702:AMF network element establishes session management context (Nsmf_PDUSession_ to the transmission of SMF network element CreateSMContext message).The message for establishing session management context carries ID and the transmission of user face of PDU session Enhancing instruction.

S703:SMF network element obtains the session management subscription data of terminal from UDM network element.It can wrap in the subscription data The instruction of dormant state whether is able to enter containing the PDU session.

S704:SMF network element obtains the strategy of terminal from PCF network element.It may include in the strategy of the terminal and the PDU meeting Whether words are able to enter the relevant strategy of dormant state.

Either step in above-mentioned S703 and S704 is optional.

S705:SMF network element according in being locally configured of the SM subscription data of terminal, the strategy of terminal and SMF network element extremely A kind of few and user face transmission enhancing instruction, determines whether the PDU session is able to enter dormant state.Wherein, the tool of the step Body implementation, and can be referred to above with information such as SM subscription data, details are not described herein again.

S706:SMF network element records whether the PDU session is able to enter dormant state.How SMF network element records the PDU session Whether being able to enter dormant state can be with reference to above, and details are not described herein again.

Present embodiments provide a kind of method for establishing PDU session, in this method, terminal can initiated establish PDU meeting To SMF network element the PDU session is sent in the process of words be able to enter the instruction of dormant state (or not can enter the finger of dormant state Show), in this way, when SMF network element it needs to be determined that when whether the PDU session is able to enter dormant state, it can directly inquire being recorded Information.Directly the recorded information of inquiry can be, but not limited to be applied in any of the above-described related embodiment.

It should be noted that the process that PDU session is entered to dormant state by activated state is described above, and by PDU Session is reverted to the process of (or entrance) activated state by dormant state.It should be understood that during specific implementation, PDU session Deactivated state can also be entered by dormant state, dormant state can also be entered by deactivated state.Such as, but not limited to when the label of terminal The about reasons such as data change, when so that some or certain PDU sessions becoming not can enter dormant state from being able to enter dormant state, if The PDU session is currently at dormant state, then optionally, which can be entered deactivated state by dormant state.Such as but not It is limited to the reasons such as to change when the subscription data of terminal, so that some or certain PDU sessions can from not can enter that dormant state becomes When into dormant state, if the PDU session is currently at deactivated state, optionally can by the PDU session by deactivated state into Enter dormant state.Other examples will not enumerate.In addition, the embodiment of the present application enters deactivated state by dormant state to PDU session Process, and the process of dormant state is entered without limiting by deactivated state.

It is above-mentioned that mainly scheme provided by the embodiments of the present application is described from the angle of method.In order to realize above-mentioned function Can, it comprises execute the corresponding hardware configuration of each function and/or software module.Those skilled in the art should be easy to anticipate Know, unit and algorithm steps described in conjunction with the examples disclosed in the embodiments of the present disclosure, the application can with hardware or The combining form of hardware and computer software is realized.Some function is actually with the side of hardware or computer software driving hardware Formula executes, specific application and design constraint depending on technical solution.Professional technician can be to each specific Using using different methods to achieve the described function, but this realize it is not considered that exceeding scope of the present application.

The embodiment of the present application can be according to above method example to device (including the session management network element of management PDU session Such as SMF network element, access network equipment such as RAN equipment and terminal installation such as terminal) division that carries out functional module, for example, can be with Two or more functions, can also be integrated in a processing module by corresponding each each functional module of function division In.Above-mentioned integrated module both can take the form of hardware realization, can also be realized in the form of software function module.It needs It is noted that be schematical, only a kind of logical function partition to the division of module in the embodiment of the present application, it is practical real It is current that there may be another division manner.

As shown in figure 8, being a kind of structural schematic diagram of session management network element provided by the embodiments of the present application.It is shown in Fig. 8 Session management network element 8 can be used for executing the step of SMF network element executes in any method provided above.The session management net Member 8 may include: processing unit 801 and Transmit-Receive Unit 802.Wherein:

Processing unit 801 determines at least one PDU session for initiating from terminal in the PDU session established；Wherein, until A few PDU session is in activated state.

Transmit-Receive Unit 802, for sending the first information to access network equipment；The first information includes at least one PDU session Identification information, the first information is used to indicate the user face interface-free resources that access network equipment discharges at least one PDU session, retains The configuration information of user face interface-free resources and the context of at least one PDU session.

For example, session management network element 8 can be the SMF network element in Fig. 3 or Fig. 4, processing unit 801 in conjunction with Fig. 3 or Fig. 4 It can be used for executing the S101 in Fig. 3, Transmit-Receive Unit 802 can be used for executing the S102 in Fig. 3.

Optionally, processing unit 801 specifically can be used for: determine that at least one PDU session belongs to following any PDU Session: the PDU session for needing to transmit without data in preset time period；In switching flow, all service quality streams are all by mesh The PDU session of tag splice log equipment refusal；LADN PDU session when terminal is out of LADN；Terminal needs are entered by connected state When suspending state, the PDU session in activated state；Terminal out of permission range when, the PDU session in activated state.

Optionally, processing unit 801 specifically can be used for: according to the session management subscription data of terminal, the strategy of terminal At least one of with being locally configured for session management network element 8, initiate to determine at least one in the PDU session established from terminal PDU session.

Optionally, Transmit-Receive Unit 802 can be also used for, and receive the second information that terminal is sent.In this case, processing unit 801 specifically can be used for: be initiated to determine at least one PDU session in the PDU session established from terminal according to the second information；Its In, the second information includes the identification information of at least one PDU session and indicates that at least one PDU session is able to enter dormant state Information.

Optionally, Transmit-Receive Unit 802 can be also used for, and receive the second information that terminal is sent.In this case, processing unit 801 specifically can be used for: be matched according to the local of the session management subscription data of terminal, the strategy of terminal and session management network element 8 It at least one of sets and the second information, initiates to determine at least one PDU session in the PDU session established from terminal；Wherein, Second information includes the identification information of at least one PDU session and indicates that at least one PDU session is able to enter the letter of dormant state Breath.

Optionally, which is able to enter dormant state.Processing unit 801 specifically can be used for: according to end The session management subscription data at end, the strategy of terminal and session management network element at least one of are locally configured, and determine this extremely A few PDU session is to be able to enter the PDU session of dormant state.

Optionally, which is able to enter dormant state.Transmit-Receive Unit 802 can be also used for, and receive terminal The second information sent, processing unit 801 specifically can be used for, and determine that at least one PDU session is energy according to the second information Enough enter the PDU session of dormant state；Wherein, the second information includes the identification information of at least one PDU session and indicates this extremely A few PDU session is able to enter the information of dormant state；

Optionally, which is able to enter dormant state.Transmit-Receive Unit 802 can be also used for, and receive terminal The second information sent, processing unit 801 specifically can be used for, according to the session management subscription data of terminal, the strategy of terminal With session management network element at least one of be locally configured and the second information determine that at least one PDU session is can be into Enter the PDU session of dormant state；Wherein, the second information include at least one PDU session identification information and indicate this at least one A PDU session is able to enter the information of dormant state.

Optionally, Transmit-Receive Unit 802 can be also used for, and receive the third information that access network equipment is sent；Wherein, third is believed Breath includes the identification information of one or more PDU session, and one or more PDU sessions are terminals from least one PDU session Determining；Third information is used to indicate the user face interface-free resources that one or more PDU sessions have been established in access network equipment.Example Such as, in conjunction with Fig. 4, Transmit-Receive Unit 802 can be used for executing S206.

The explanation of related content in session management network element provided by the embodiments of the present application and it can be obtained technical effect It can refer to above method embodiment, details are not described herein.

As shown in figure 9, being a kind of structural schematic diagram of access network equipment provided by the embodiments of the present application.It is shown in Fig. 9 to connect Log equipment 9 can be used for executing the step of RAN equipment executes in any method provided above.Access network equipment 9 can be with It include: Transmit-Receive Unit 901 and processing unit 902.Wherein:

Transmit-Receive Unit 901, for receiving the first information of session management network element transmission；Wherein, the first information includes at least The identification information of one PDU session, at least one PDU session are that session management network element is initiated in the PDU session established from terminal Determining, at least one PDU session is in activated state.

Processing unit 902 retains for according to the first information, discharging the user face interface-free resources of at least one PDU session The configuration information of user face interface-free resources and the context of at least one PDU session.

For example, access network equipment 9 can be the RAN equipment in Fig. 3 or Fig. 4, and Transmit-Receive Unit 901 can in conjunction with Fig. 3 or Fig. 4 With for executing the S103 in Fig. 3, processing unit 902 can be used for executing the S104 in Fig. 3.

Optionally, Transmit-Receive Unit 901 can be also used for, and according to the first information, send the 4th information to terminal；Wherein, Four information include the identification information of at least one PDU session, and the 4th information is used to indicate terminal and discharges at least one PDU session User face interface-free resources retain the configuration information of user face interface-free resources and the context of at least one PDU session.For example, knot Fig. 3 is closed, Transmit-Receive Unit 901 can be used for executing S105.

Optionally, Transmit-Receive Unit 901 can be also used for, and receive the 5th information that terminal is sent；Wherein, the 5th information includes The identification information of one or more PDU sessions, one or more PDU sessions are that terminal is determined from least one PDU session. In this case, processing unit 902 can be also used for, eat dishes without rice or wine to provide according to the user face of the 5th information and one or more PDU session The configuration information in source establishes the user face interface-free resources of one or more PDU session.For example, Transmit-Receive Unit 901 can in conjunction with Fig. 4 With for executing S203, processing unit 902 can be used for executing S204.

Optionally, Transmit-Receive Unit 901 can be also used for, and send third information to session management network element.Third information includes The identification information of one or more PDU session；Third information is used to indicate the access network equipment 9 and has been established this or more The user face interface-free resources of a PDU session.For example, Transmit-Receive Unit 901 can be also used for executing S205 in conjunction with Fig. 4.

Optionally, in switching flow, access network equipment 9 is source access network equipment.In this case, Transmit-Receive Unit 901 is also For sending the context of one or more PDU session to target access network equipment.Based on the optional implementation, receive Bill member 901 can be also used for, and receive the 5th information that terminal is sent, specifically: target access network equipment receives terminal and sends 5th information.Transmit-Receive Unit 901 can be also used for, and send third information to session management network element, specifically: target access network is set It is standby to send third information to session management network element.

The explanation of related content in access network equipment provided by the embodiments of the present application and can be obtained technical effect can With reference to above method embodiment, details are not described herein.

It as shown in Figure 10, is a kind of structural schematic diagram of terminal installation provided by the embodiments of the present application.End shown in Fig. 10 End device 10 can be used for executing the step of terminal executes in any method provided above.Terminal installation 10 may include: Transmit-Receive Unit 1001 and processing unit 1002.Wherein:

Transmit-Receive Unit 1001, for receiving the 4th information of access network equipment transmission；Wherein, the 4th information includes at least one The identification information of a PDU session, at least one PDU session are that session management network element initiates the PDU meeting established from terminal installation 10 It is determined in words, at least one PDU session is in activated state.

Processing unit 1002 retains for discharging the user face interface-free resources of at least one PDU session according to the 4th information The configuration information of user face interface-free resources and the context of at least one PDU session.

For example, terminal installation 10 can be the terminal in Fig. 3 or Fig. 4 in conjunction with Fig. 3 or Fig. 4, Transmit-Receive Unit 1001 can be used In executing the S106 in Fig. 3, processing unit 1002 can be used for executing S107.

Optionally, Transmit-Receive Unit 1001 can be also used for, and send the second information to session management network element；Second information includes The identification information of at least one PDU session and indicate that at least one PDU session is able to enter the information of dormant state, the second information is used It initiates to determine at least one PDU session in the PDU session established from terminal installation 10 in session management network element.

Optionally, processing unit 1002 can be also used for, according to the user face interface-free resources of one or more PDU sessions Configuration information establishes the user face interface-free resources of one or more PDU session；Wherein, one or more PDU sessions are terminal dresses Set 10 determinations from least one PDU session.In this case, Transmit-Receive Unit 1001 can be also used for, sent out to access network equipment Send the 5th information；Wherein, the 5th information includes the identification information of one or more PDU sessions, and the 5th information is used to indicate access The user face interface-free resources of net equipment foundation one or more PDU session.For example, processing unit 1002 can be used in conjunction with Fig. 4 S201 is executed, Transmit-Receive Unit 1001 can be used for executing S202.

The explanation of related content in terminal installation provided by the embodiments of the present application and it can be obtained technical effect and can join Above method embodiment is examined, details are not described herein.

As shown in figure 11, a kind of structural representation for the communication equipment being applicable in by technical solution provided by the embodiments of the present application Figure.The communication equipment 11 may include: at least one processor 1101, communication line 1102, memory 1103 and at least one A communication interface 1104.The communication equipment 11 specifically can be any session management network element 8 provided above, access network equipment 9 or terminal installation 10.For example, any in conjunction with Fig. 8~Figure 10, Transmit-Receive Unit can be the communication interface 1104 in Figure 11, place Managing unit can be with the processor 1101 or processor 1107 in corresponding diagram 11.

Processor 1101 can be a general central processor (central processing unit, CPU), micro- place Manage device, application-specific integrated circuit (application-specific integrated circuit, ASIC) or one or Multiple integrated circuits executed for controlling application scheme program.

Communication line 1102 may include an access, and information is transmitted between said modules.

Memory 1103 can be read-only memory (read-only memory, ROM) or can store static information and refer to The other kinds of static storage device enabled, random access memory (random access memory, RAM) or can store The other kinds of dynamic memory of information and instruction, is also possible to Electrically Erasable Programmable Read-Only Memory (electrically erasable programmable read-only memory, EEPROM), CD-ROM (compact Disc read-only memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, light Dish, Digital Versatile Disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carry or Store have instruction or data structure form desired program code and can by any other medium of computer access, but It is without being limited thereto.

Communication interface 1104, using the device of any transceiver one kind, for other equipment or communication, such as Ethernet, RAN, WLAN (wireless local area networks, WLAN) etc..

Wherein, memory 1103 is used to store the computer executed instructions for executing application scheme, and by processor 1101 It is executed to control.Processor 1101 is for executing the computer executed instructions stored in memory 1103, to realize the application The method that following embodiments provide.

Optionally, the computer executed instructions in the embodiment of the present application can also be referred to as application code, the application Embodiment is not especially limited this.

Optionally, memory 1103, which can be, is individually present, and is connected by communication line 1102 with processor 1101.It deposits Reservoir 1103 can also be integrated with processor 1101.

In the concrete realization, as one embodiment, processor 1101 may include one or more CPU, such as Figure 11 In CPU0 and CPU1.

In the concrete realization, as one embodiment, communication equipment 11 may include multiple processors, such as in Figure 11 Processor 1101 and processor 1107.Each of these processors can be monokaryon (single-CPU) processor, It is also possible to multicore (multi-CPU) processor.Here processor can refer to one or more equipment, circuit, and/or For handling the processing core of data (such as computer program instructions).

In the concrete realization, as one embodiment, communication equipment 11 can also include that output equipment 1105 and input are set Standby 1106.Output equipment 1105 and processor 1101 communicate, and can show information in many ways.For example, output equipment 1105 can be liquid crystal display (liquid crystal display, LCD), Light-Emitting Diode (light emitting Diode, LED) display equipment, cathode-ray tube (cathode ray tube, CRT) display equipment or projector (projector) etc..Input equipment 1106 and processor 1101 communicate, and can receive the input of user in many ways.For example, Input equipment 1106 can be mouse, keyboard, touch panel device or sensing equipment etc..

Above-mentioned communication equipment 11 can be a common apparatus either special equipment.In the concrete realization, lead to Letter equipment 11 can be desktop computer, portable computer, network server, palm PC (personal digital Assistant, PDA), cell phone, tablet computer, wireless terminal device, embedded device or have similar structures in Figure 11 Equipment.The embodiment of the present application does not limit the type of communication equipment 11.

It correlation step performed by processor and explanation and can be obtained in communication equipment provided by the embodiments of the present application Technical effect can refer to above method embodiment, and details are not described herein.

The embodiment of the present application also provides a kind of systems for managing PDU session.The system may include: session management net Member, access network equipment and terminal.

Optionally, session management network element is used to initiate from terminal to determine at least one PDU session in the PDU session established； At least one PDU session is in activated state；And the first information is sent to access network equipment；The first information include this at least The identification information of one PDU session.Access network equipment is for receiving the first information, and according to the first information, discharge this at least one The user face interface-free resources of a PDU session, retain user face interface-free resources configuration information and at least one PDU session it is upper Hereafter.

Optionally, session management network element, which is executed, initiates to determine at least one PDU session in the PDU session established from terminal, It may include: sheet of the session management network element according to the session management subscription data of terminal, the strategy of terminal and session management network element At least one of ground configuration is initiated to determine at least one PDU session in the PDU session established from terminal.

Optionally, terminal can be also used for session management network element send the second information, the second information include this at least one The identification information of a PDU session and indicate that at least one PDU session is able to enter the information of dormant state.Session management network element is also It can be used for receiving the second information of terminal transmission.In this case, session management network element, which is executed from terminal, initiates the PDU meeting established At least one PDU session is determined in words, may include: that session management network element initiates the PDU established according to the second information from terminal At least one PDU session is determined in session.

Optionally, terminal can be also used for sending the second information to session management network element；Second information include this at least one The identification information of a PDU session and indicate that at least one PDU session is able to enter the information of dormant state.Session management network element is also It can be used for receiving the second information of terminal transmission.In this case, session management network element, which is executed from terminal, initiates the PDU meeting established At least one PDU session is determined in words, may include: session management network element according to the session management subscription data of terminal, terminal Strategy and session management network element at least one of be locally configured and the second information, the PDU meeting established is initiated from terminal At least one PDU session is determined in words.

Optionally, access network equipment can be also used for according to the first information, send the 4th information to terminal；4th packet Include the identification information of at least one PDU session.Terminal be also used to receive access network equipment transmission the 4th information, and according to 4th information discharges the user face interface-free resources of at least one PDU session, retain user face interface-free resources configuration information and The context of at least one PDU session.

Optionally, which is able to enter dormant state.

Optionally, terminal can be also used for the configuration information of the user face interface-free resources according to one or more PDU sessions, Establish the user face interface-free resources of one or more PDU session；One or more PDU session be terminal from this at least one It is determined in PDU session；And the 5th information is sent to access network equipment；Wherein, the 5th information includes the one or more The identification information of PDU session.Access network equipment can be also used for receiving the 5th information that terminal is sent, and according to the 5th information With the configuration information of the user face interface-free resources of one or more PDU session, the user of one or more PDU session is established Face interface-free resources.

Optionally, access network equipment can be also used for sending third information to session management network element；Third information includes should The identification information of one or more PDU sessions；Third information is used to indicate access network equipment and one or more PDU meeting has been established The user face interface-free resources of words.Session management network element can be also used for receiving the third information that access network equipment is sent.

The explanation of related content in PDU conversation management system provided by the embodiments of the present application and can be obtained technology effect Fruit can refer to above method embodiment, and details are not described herein.

In the description of the present application, unless otherwise indicated, "/" indicate or the meaning, for example, A/B can indicate A or B；This "and/or" in text be only it is a kind of describe affiliated partner incidence relation, indicate may exist three kinds of relationships, for example, A and/ Or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.

In the description of the present application, unless otherwise indicated, " multiple " refer to two or more.

In addition, in embodiments herein, being used for the ease of clearly describing the technical solution of the embodiment of the present application The printed words such as " first ", " second " distinguish function and the essentially identical identical entry of effect or similar item.Those skilled in the art Member is understood that the printed words such as " first ", " second " are not defined quantity and execution order, and " first ", " second " etc. Printed words do not limit certain different yet.

In addition, in the description of the present application, unless otherwise indicated, "at least one" refer to any one or it is any a variety of Combination, "at least one" refers to any one or any number of combinations.It, can be with for example, at least one of A, B and C Including following situations: 1. A；②B；③C；4. A and B；5. A and C；6. B and C；7. A, B and C.

The network architecture and application scenarios of the embodiment of the present application description are to more clearly illustrate that the application is implemented The technical solution of example, does not constitute the restriction to technical solution provided by the embodiments of the present application, skilled person will appreciate that, with The differentiation of the network architecture and the appearance of new opplication scene, technical solution provided by the embodiments of the present application similar technology is asked It inscribes equally applicable.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When being realized using software program, can entirely or partly realize in the form of a computer program product.The computer Program product includes one or more computer instructions.On computers load and execute computer executed instructions when, all or It partly generates according to process or function described in the embodiment of the present application.The computer can be general purpose computer, dedicated meter Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center Word user line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another A web-site, computer, server or data center are transmitted.The computer readable storage medium can be computer Any usable medium that can be accessed either includes the numbers such as one or more server, data centers that medium can be used to integrate According to storage equipment.The usable medium can be magnetic medium (for example, floppy disk, hard disk, tape), optical medium (for example, DVD), Or semiconductor medium (such as solid state hard disk (solid state disk, SSD)) etc..

Although the application is described in conjunction with each embodiment herein, however, implementing the application claimed In the process, those skilled in the art are by checking the attached drawing, disclosure and the appended claims, it will be appreciated that and it is real Other variations of the existing open embodiment.In the claims, " comprising " (comprising) word is not excluded for other compositions Part or step, "a" or "an" are not excluded for multiple situations.Claim may be implemented in single processor or other units In several functions enumerating.Mutually different has been recited in mutually different dependent certain measures, it is not intended that these are arranged It applies to combine and generates good effect.

Although the application is described in conjunction with specific features and embodiment, it is clear that, do not departing from this Shen In the case where spirit and scope please, it can be carry out various modifications and is combined.Correspondingly, the specification and drawings are only institute The exemplary illustration for the application that attached claim is defined, and be considered as covered within the scope of the application any and all and repair Change, change, combining or equivalent.Obviously, those skilled in the art the application can be carried out various modification and variations without It is detached from spirit and scope.If in this way, these modifications and variations of the application belong to the claim of this application and its Within the scope of equivalent technologies, then the application is also intended to include these modifications and variations.

Claims

1. a kind of method of management agreement data cell PDU session, which is characterized in that the described method includes:

Session management network element initiates to determine at least one PDU session in the PDU session established from terminal；Wherein, described at least one A PDU session is in activated state；

The session management network element sends the first information to access network equipment；The first information includes at least one described PDU The identification information of session, the first information are used to indicate the use that the access network equipment discharges at least one PDU session Family face interface-free resources retain the configuration information of user face interface-free resources and the context of at least one PDU session.

2. the method according to claim 1, wherein the session management network element initiates the PDU established from terminal At least one PDU session is determined in session, comprising:

The session management network element determines that at least one described PDU session belongs to following any PDU session:

The PDU session for needing to transmit without data in preset time period；

In switching flow, all service quality streams are all by the PDU session of target access network equipment refusal；

LADN PDU session when the terminal is out of local data network coverage LADN；

When the terminal needs to be entered by connected state pause state, the PDU session in activated state；

The terminal out of permission range when, the PDU session in activated state.

3. method according to claim 1 or 2, which is characterized in that at least one described PDU session is to be able to enter suspend mode The PDU session of state, the method also includes:

The session management network element is according to the session management subscription data of the terminal, the tactful and described session pipe of the terminal At least one of being locally configured for network element is managed, determines that at least one described PDU session is to be able to enter the PDU meeting of dormant state Words；

Alternatively, the session management network element receives the second information that the terminal is sent, according to second information determination At least one PDU session is to be able to enter the PDU session of dormant state；Wherein, second information includes at least one described PDU The identification information of session and at least one described PDU session of expression are able to enter the information of dormant state；

Alternatively, the session management network element receives the second information that the terminal is sent, according to the session management label of the terminal About the tactful and described session management network element of data, the terminal at least one of be locally configured and second information Determine that at least one described PDU session is to be able to enter the PDU session of dormant state；Wherein, second information include it is described extremely The identification information of a few PDU session and at least one described PDU session of expression are able to enter the information of dormant state.

4. method according to any one of claims 1 to 3, which is characterized in that the method also includes:

The session management network element receives the third information that the access network equipment is sent；Wherein, the third information includes one The identification information of a or multiple PDU sessions, one or more of PDU sessions are the terminals from least one described PDU meeting It is determined in words；The third information is used to indicate the use that one or more of PDU sessions have been established in the access network equipment Family face interface-free resources.

5. a kind of method of management agreement data cell PDU session, which is characterized in that the described method includes:

Access network equipment receives the first information that session management network element is sent；Wherein, the first information includes at least one PDU The identification information of session, at least one described PDU session are that the session management network element is initiated in the PDU session established from terminal Determining, at least one described PDU session is in activated state；

The access network equipment discharges the user face interface-free resources of at least one PDU session, protects according to the first information Stay the configuration information of user face interface-free resources and the context of at least one PDU session.

6. according to the method described in claim 5, it is characterized in that, the method also includes:

The access network equipment sends the 4th information according to the first information, Xiang Suoshu terminal；Wherein, the 4th packet The identification information of at least one PDU session is included, the 4th information is used to indicate at least one described in the terminal release The user face interface-free resources of PDU session, retain user face interface-free resources configuration information and at least one described PDU session Context.

7. method according to claim 5 or 6, which is characterized in that the method also includes:

The access network equipment receives the 5th information that the terminal is sent；Wherein, the 5th information includes one or more The identification information of PDU session, one or more of PDU sessions are that the terminal is determined from least one described PDU session 's；

The access network equipment is matched according to the 5th information and the user face interface-free resources of one or more of PDU sessions Confidence breath, establishes the user face interface-free resources of one or more of PDU sessions.

8. the method according to the description of claim 7 is characterized in that the method also includes:

The access network equipment sends third information to the session management network element；Wherein, the third information includes described one The identification information of a or multiple PDU sessions；The third information be used to indicate the access network equipment have been established it is one or The user face interface-free resources of multiple PDU sessions.

9. according to the described in any item methods of claim 5 to 8, which is characterized in that in switching flow, the access network equipment It is source access network equipment；The method also includes:

The source access network equipment sends the context of one or more of PDU sessions to target access network equipment.

10. a kind of method of management agreement data cell PDU session, which is characterized in that the described method includes:

Terminal receives the 4th information that access network equipment is sent；Wherein, the 4th information includes the mark of at least one PDU session Know information, at least one described PDU session is that session management network element initiates to determine in the PDU session established from terminal, described At least one PDU session is in activated state；

The terminal discharges the user face interface-free resources of at least one PDU session according to the 4th information, described in reservation The context of the configuration information of user face interface-free resources and at least one PDU session.

11. according to the method described in claim 10, it is characterized in that, the method also includes:

The terminal sends the second information to the session management network element；Wherein, second information include it is described at least one The identification information of PDU session and at least one described PDU session of expression are able to enter the information of dormant state, and second information is used It initiates to determine at least one described PDU session in the PDU session established from the terminal in the session management network element.

12. method described in 0 or 11 according to claim 1, which is characterized in that the method also includes:

The terminal is established one or more according to the configuration information of the user face interface-free resources of one or more PDU sessions The user face interface-free resources of a PDU session；Wherein, one or more of PDU sessions be the terminal from it is described at least one It is determined in PDU session；

The terminal sends the 5th information to the access network equipment；Wherein, the 5th information includes one or more of The identification information of PDU session, the 5th information are used to indicate the access network equipment and establish one or more of PDU sessions User face interface-free resources.

13. a kind of session management network element, which is characterized in that the session management network element includes:

Processing unit determines at least one PDU session for initiating from terminal in the PDU session established；Wherein, described at least one A PDU session is in activated state；

Transmit-Receive Unit, for sending the first information to access network equipment；The first information includes at least one described PDU session Identification information, the first information is used to indicate the user face that the access network equipment discharges at least one PDU session Interface-free resources retain the configuration information of user face interface-free resources and the context of at least one PDU session.

14. session management network element according to claim 13, which is characterized in that

The processing unit is specifically used for: determine that at least one described PDU session belongs to following any PDU session:

The PDU session for needing to transmit without data in preset time period；

The terminal out of permission range when, the PDU session in activated state.

15. session management network element described in 3 or 14 according to claim 1, which is characterized in that at least one described PDU session is It is able to enter the PDU session of dormant state；

The processing unit is specifically used for: according to the session management subscription data of the terminal, the strategy of the terminal and described Session management network element at least one of is locally configured, and determines that at least one described PDU session is to be able to enter dormant state PDU session；

Alternatively, the Transmit-Receive Unit is also used to, the second information that the terminal is sent is received, the processing unit is specifically used for, Determine that at least one described PDU session is to be able to enter the PDU session of dormant state according to second information；Wherein, described Two information include the identification information of at least one PDU session and indicate that at least one described PDU session is able to enter suspend mode The information of state；

Alternatively, the Transmit-Receive Unit is also used to, the second information that the terminal is sent is received, the processing unit is specifically used for, According to the session management subscription data of the terminal, the terminal being locally configured of tactful and described session management network element in At least one and described second information determines that at least one described PDU session is to be able to enter the PDU session of dormant state；Its In, second information includes the identification information of at least one PDU session and indicates that at least one described PDU session can Into the information of dormant state.

16. 3 to 15 described in any item session management network elements according to claim 1, which is characterized in that

The Transmit-Receive Unit is also used to, and receives the third information that the access network equipment is sent；Wherein, the third information includes The identification information of one or more PDU sessions, one or more of PDU sessions are the terminals from least one described PDU It is determined in session；The third information is used to indicate the access network equipment and one or more of PDU sessions has been established User face interface-free resources.

17. a kind of access network equipment, which is characterized in that the access network equipment includes:

Transmit-Receive Unit, for receiving the first information of session management network element transmission；Wherein, the first information includes at least one The identification information of PDU session, at least one described PDU session are that the session management network element initiates the PDU meeting established from terminal It is determined in words, at least one described PDU session is in activated state；

Processing unit, for discharging the user face interface-free resources of at least one PDU session, protecting according to the first information Stay the configuration information of user face interface-free resources and the context of at least one PDU session.

18. access network equipment according to claim 17, which is characterized in that

The Transmit-Receive Unit is also used to, and according to the first information, Xiang Suoshu terminal sends the 4th information；Wherein, the described 4th Information includes the identification information of at least one PDU session, and it is described extremely that the 4th information is used to indicate the terminal release The user face interface-free resources of a few PDU session, retain user face interface-free resources configuration information and it is described at least one The context of PDU session.

19. access network equipment described in 7 or 18 according to claim 1, which is characterized in that

The Transmit-Receive Unit is also used to, and receives the 5th information that the terminal is sent；Wherein, the 5th information include one or The identification information of multiple PDU sessions, one or more of PDU sessions are the terminals from least one described PDU session Determining；

The processing unit is also used to, and eats dishes without rice or wine to provide according to the user face of the 5th information and one or more of PDU sessions The configuration information in source establishes the user face interface-free resources of one or more of PDU sessions.

20. access network equipment according to claim 19, which is characterized in that

The Transmit-Receive Unit is also used to, and Xiang Suoshu session management network element sends third information；Wherein, the third information includes institute State the identification information of one or more PDU sessions；The third information is used to indicate the access network equipment and has been established described one The user face interface-free resources of a or multiple PDU sessions.

21. 7 to 20 described in any item access network equipments according to claim 1, which is characterized in that described in switching flow Access network equipment is source access network equipment；The Transmit-Receive Unit is also used to, and is sent to target access network equipment one or more The context of a PDU session.

22. a kind of terminal installation, which is characterized in that the terminal installation includes:

Transmit-Receive Unit, for receiving the 4th information of access network equipment transmission；Wherein, the 4th information includes at least one The identification information of PDU session, at least one described PDU session are that session management network element is initiated in the PDU session established from terminal Determining, at least one described PDU session is in activated state；

Processing unit retains for discharging the user face interface-free resources of at least one PDU session according to the 4th information The context of the configuration information of user face interface-free resources and at least one PDU session.

23. terminal installation according to claim 22, which is characterized in that

The Transmit-Receive Unit is also used to, and Xiang Suoshu session management network element sends the second information；Second information include it is described extremely The identification information of a few PDU session and indicate that at least one described PDU session is able to enter the information of dormant state, described second Information is initiated to determine at least one described PDU session in the PDU session established from the terminal for the session management network element.

24. the terminal installation according to claim 22 or 23, which is characterized in that

The processing unit is also used to, and according to the configuration information of the user face interface-free resources of one or more PDU sessions, establishes institute State the user face interface-free resources of one or more PDU sessions；Wherein, one or more of PDU sessions are the terminals from institute State determination at least one PDU session；

The Transmit-Receive Unit is also used to, and Xiang Suoshu access network equipment sends the 5th information；Wherein, the 5th information includes described The identification information of one or more PDU sessions, the 5th information be used to indicate the access network equipment establish it is one or The user face interface-free resources of multiple PDU sessions.

25. a kind of system of management agreement data cell PDU session, which is characterized in that any including such as claim 13 to 16 Session management network element described in, such as the described in any item access network equipments of claim 17 to 21, and such as claim 22 To 24 described in any item terminal installations.

26. a kind of computer readable storage medium, which is characterized in that including computer instruction, when the computer instruction is being counted When being run on calculation machine, so that as the described in any item methods of claim 1 to 12 are performed.