CN109802980A - Method for message interaction, relevant apparatus and system - Google Patents

Abstract

This application discloses a kind of method for message interaction, relevant apparatus and systems.This method can include: the first equipment receives the first message that terminal is sent, and first message establishes session connection for terminal request, and first message includes the mark and the continuous request of IP address of terminal；Second message is sent to the second equipment in failure session connection being terminal distribution IP address；Second message establishes session connection for terminal request, and second message includes the mark and the continuous request of IP address of terminal；The third message of the second equipment transmission is received, third message is used to establish the session connection of terminal request foundation, and third message includes the IP address that the second equipment distributes to terminal in failure session connection；The 4th message is sent to terminal, the 4th message is used to establish the session connection of terminal request foundation, and the 4th message includes the IP address that the second equipment distributes to terminal in failure session connection.The application can continue the IP address with terminal.

Description

Method for message interaction, relevant apparatus and system

Technical field

This application involves fields of communication technology, in particular to method for message interaction, relevant apparatus and system.

Background technique

Currently, the communication process of each Terminal Type is all based on Internet protocol (internet protocol, IP), terminal makes The IP address of the IP address and other equipment distributed with network side establishes communication.

In the communication process of terminal and internet, if the IP address of terminal does not change, then the current business of terminal is not It can be interrupted；If the IP address of terminal changes, terminal needs to access internet by new IP address to continue current industry Business.During terminal accesses internet by new IP address, the business needs before terminal restart, Yong Huke It can perceive business to be interrupted, influence user experience.

Summary of the invention

This application provides method for message interaction, relevant apparatus and systems, can continue and use IP address.

In a first aspect, being applied to the first equipment side, this method this application provides a kind of method for message interaction can include: First equipment receives the first message that terminal is sent, and the first message establishes session connection for the terminal request, described It include the mark and the continuous request of IP address of the terminal in first message；First equipment is in failure session connection Second message is sent for the second equipment of the terminal distribution IP address；The second message is established for the terminal request Session connection includes the mark and the continuous request of the IP address of the terminal in the second message；First equipment connects The third message that second equipment is sent is received, the third message is used to establish the session connection that the terminal request is established, It include the IP address that second equipment distributes to the terminal in the failure session connection in the third message；Institute It states the first equipment and sends the 4th message to the terminal, the 4th message is used to establish the session that the terminal request is established It connects, with distributing to the IP of the terminal in the 4th message in the failure session connection including second equipment Location.

Second aspect, this application provides a kind of method for message interaction, are applied to the second equipment side, this method can include: Second equipment receives the second message that the first equipment is sent, and the second message establishes session connection for terminal request, described It include the mark and the continuous request of IP address of the terminal in second message；Second equipment is sent to first equipment Third message, the third message are used to establish the session connection that the terminal request is established, and include institute in the third message State the IP address that the second equipment distributes to the terminal in failure session connection.

The third aspect, this application provides a kind of method for message interaction, are applied to terminal side, this method can include: terminal First message is sent to the first equipment, the first message establishes session connection, the first message for the terminal request In include the terminal mark and the continuous request of IP address；The terminal receives the 4th message that first equipment is sent, 4th message is used to establish the session connection that the terminal request is established, and includes that the second equipment exists in the 4th message The IP address of the terminal is distributed in failure session connection.

In the application, in failure session connection, the second equipment can retain IP address for terminal, and in terminal weight When new request establishes session connection and requests to continue with IP address, the IP address retained for terminal is reassigned to terminal.Implement The method of first aspect, second aspect and third aspect description, the continuous IP address of terminal can be avoided user and perceive business It interrupts, promotes user experience.

The method for message interaction of the application can be applied in 2G, 3G, 4G, 5G or later communication system, the first equipment It can be GPRS Service support node (serving GPRS support node, SGSN), mobility management entity (mobility management entity, MME), for accessing and unit AMF (the access and of mobile management function Mobility management function), the second equipment can be Gateway GPRS Support Node (gateway GPRS Support node, GGSN), grouped data network gateway (packet data network gateway, PGW), be used for meeting The cell S MF (session management function) of management function is talked about, third equipment can be home location register Device (home location register, HLR), home signature user server (home subscriber server, HSS), for the UDM of uniform data management (unified data management).

In the application, terminal may exist multiple session connections, each session connection have different IP address and Different access point name.After terminal and network side establish session connection, IP address and data network communications can be passed through.Session Access point name in connection then identifies the type of the data network of terminal access in the session connection.

In the application, fall situations such as shutting down or restart caused by net, terminal faults itself, the network equipment there is terminal When (access network equipment or equipment of the core network) delay machine, the network equipment reset, it may cause between terminal and network side Session connection disconnects.The session connection of the disconnection is known as failure session connection by the application.

In the application, after terminal failure session connection, when re-request establishes session connection, by using failure meeting The access point name of words connection searches out the second equipment in failure session connection for terminal distribution IP address, enables to Second equipment is the original IP address of terminal distribution, realizes that IP address is continuous and uses.

In an alternative embodiment, in failure session connection, the first equipment is by terminal iidentification, access point name, The corresponding relationship of two equipment is stored to local or third equipment.Terminal iidentification, access point name, the corresponding of the second equipment are closed System can be achieved as the first mapping table.

It in an alternative embodiment, is terminal distribution IP address in failure session connection in failure session connection The second equipment be terminal retain IP address, with terminal re-request session connection when IP address is distributed into the end again End.

In an alternative embodiment, when terminal re-requests session connection, the first equipment according in the first mapping table, according to The mark of the terminal and the corresponding access point name of the failure session connection, determination are in the failure session connection Second equipment of the terminal distribution IP address.

Optionally, when the method in the application in 2/3G communication system in use, the first message be PDP Context Request message is activated, the second message is that PDP Context establishes request message, and the third message is PDP Context foundation It replies message, the 4th message is context activation received message.

Optionally, when the method in the application in 4G communication system in use, the first message disappears for attach request Breath, the second message are session establishment request message, and the third message replies message for session establishment, and the described 4th disappears Breath is attachment received message；Alternatively, the first message is that request message is established in PDN connection, the second message is built for session Vertical request message, the third message reply message for session establishment, and the 4th message is that PDN connection replies message.

Optionally, when the method in the application in 5G communication system in use, the first message be PDU session establishment Request message, the second message are PDU session establishment request message, and the third message is that the reply of PDU session establishment disappears Breath, the 4th message are PDU session establishment received message.

Fourth aspect, this application provides a kind of first equipment, for executing the method for message interaction of first aspect description. First equipment can include: memory and the processor coupled with the memory, transmitter and receiver, in which: institute Transmitter is stated for sending signal with to terminal or the second equipment, the receiver is used to receive terminal, the second equipment is sent Signal, the memory are used to store the realization code of the method for message interaction of first aspect description, and the processor is for holding The program code stored in the row memory, the i.e. possible embodiment of execution first aspect or first aspect are provided Method for message interaction.

5th aspect, this application provides a kind of second equipment, for executing the method for message interaction of second aspect description. Second equipment can include: memory and the processor coupled with the memory, transmitter and receiver, in which: institute Transmitter is stated for sending signal with to the first equipment, the receiver is used to receive the signal of the first equipment transmission, described to deposit Reservoir is used to store the realization code of the method for message interaction of second aspect description, and the processor is for executing the storage The program code stored in device, i.e. interacting message provided by the possible embodiment of execution second aspect or second aspect Method.

6th aspect, this application provides a kind of terminals, for executing the method for message interaction of third aspect description.It is described Terminal can include: memory and the processor coupled with the memory, transmitter and receiver, in which: the transmitter For sending signal with to the first equipment, the receiver is used to receive the signal of the first equipment transmission, and the memory is used for The realization code of the method for message interaction of third aspect description is stored, the processor stores in the memory for executing Program code, i.e., execution the third aspect or the third aspect possible embodiment provided by method for message interaction.

7th aspect, this application provides a kind of first equipment, including multiple functional modules, for executing first accordingly Method provided by aspect or the possible embodiment of first aspect.

Eighth aspect, this application provides a kind of second equipment, including multiple functional modules, for executing second accordingly Method provided by aspect or the possible embodiment of second aspect.

9th aspect, this application provides a kind of terminals, including multiple functional modules, for executing the third aspect accordingly Or method provided by the possible embodiment in third face.

Tenth aspect, provides a kind of computer readable storage medium, and realization the is stored on the readable storage medium storing program for executing On the one hand the program code of the method for message interaction of description, the program code include the interacting message of operation first aspect description Method executes instruction.

On the one hand tenth, provides a kind of computer readable storage medium, realization is stored on the readable storage medium storing program for executing The program code of the method for message interaction of second aspect description, the program code include that the message of operation second aspect description is handed over Mutual method executes instruction.

12nd aspect, provides a kind of computer readable storage medium, realization is stored on the readable storage medium storing program for executing The program code of the method for message interaction of third aspect description, the program code include that the message of operation third aspect description is handed over Mutual method executes instruction.

13rd aspect, provide a kind of computer program product comprising instruction makes when run on a computer Obtain the method for transmitting signals that computer executes above-mentioned first aspect or the possible embodiment description of first aspect.

Fourteenth aspect, provide a kind of computer program product comprising instruction makes when run on a computer Obtain the method for transmitting signals that computer executes above-mentioned second aspect or the possible embodiment description of second aspect.

15th aspect, provide a kind of computer program product comprising instruction makes when run on a computer Obtain the method for transmitting signals that computer executes the above-mentioned third aspect or the possible embodiment description of the third aspect.

Implement the application, terminal can continue with IP address, be avoided that user perceives service disconnection, promote user experience.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of communication system provided by the present application；

Fig. 2A is the core network architecture schematic diagram in 2/3G provided by the present application；

Fig. 2 B is the core network architecture schematic diagram in 4G provided by the present application；

Fig. 2 C is the core network architecture schematic diagram in 5G provided by the present application；

Fig. 3 is the structural schematic diagram of the first equipment provided by the present application；

Fig. 4 is the structural schematic diagram of the second equipment provided by the present application；

Fig. 5 is the structural schematic diagram of terminal provided by the present application；

Fig. 6 is the flow diagram that terminal provided by the present application initiates session connection；

Fig. 7 A is the schematic diagram that core net provided by the present application is terminal distribution IP address；

Fig. 7 B is the schematic diagram that terminal provided by the present application establishes session connection by different access point name；

Fig. 8 be terminal provided by the present application break down session connection when flow diagram；

Fig. 9 is the flow diagram of method for message interaction provided by the present application；

Figure 10 is the flow diagram of the method for message interaction in the 2/3G network architecture provided by the present application；

Figure 11 is the flow diagram of the method for message interaction in the 4G network architecture provided by the present application；

Figure 12 is the flow diagram of the method for message interaction in the another kind 4G network architecture provided by the present application；

Figure 13 is the flow diagram of the method for message interaction in the 5G network architecture provided by the present application；

Figure 14 is the structural schematic diagram of the first equipment provided by the present application, the second equipment and terminal.

Specific embodiment

The term that presently filed embodiment part uses is only used for explaining the specific embodiment of the application, rather than It is intended to limit the application.

Referring to Fig. 1, Fig. 1 is the structural schematic diagram of communication system provided by the present application.Wireless communication system shown in FIG. 1 can To be the communication system in 2G/3G, it is also possible to long term evolution (Long Term Evolution, LTE) system, can also be The 5G communication system of the following evolution, (NR) system of newly eating dishes without rice or wine, machine and machine communication (Machine to Machine, M2M) system System etc..As shown in Figure 1, including terminal, access net (radioaccess network, RAN) and core in wireless communication system Net (core network, CN).

Wherein, terminal may include smart phone (such as Android phone, iOS mobile phone), tablet computer, laptop, Palm PC, mobile internet device (MID, mobile internet device), wearable device (such as smartwatch (iwatch etc.), Intelligent bracelet etc.) or other equipment that can access internet.In 2/3G, terminal can be described as mobile station (mobile station, MS), in 4/5G, terminal can be described as UE.

Wherein, access net is responsible for terminal tandem using certain wired or wireless communication technology into core net, mentions For the connection of terminal and network.It include base station in access net, base station can be the base station (base station, BS) in 2/3G, Or evolved base station (the evolved in Long Term Evolution (long termevolution, LTE) network NodeB, eNB), it can also be the base station etc. in the following 5G system.It is mutual using certain technology of eating dishes without rice or wine between terminal and base station Communication.It eats dishes without rice or wine technology can include: 4G (such as FDD LTE, TDD LTE) and the following 5G system that will be appeared on the market.

Wherein, core net is the core of communication system, and data are swapped in the core network, forward, connect, routed.Under The network structure of core net is described in detail respectively in connection with 2/3G, 4G, 5G in face.

A referring to fig. 2, Fig. 2A are the schematic network structure of core net in 2/3G.

In 2/3G the network element of core net specifically include that mobile switching centre (mobile switching center, MSC), GPRS Service support node (serving GPRS support node, SGSN), Gateway GPRS Support Node (gateway GPRS support node, GGSN), home location register (home location register, HLR).

In 2/3G, the communication interface between terminal and base station is Uu interface, and the interface between base station and MSC is Iu-CS Interface, the interface between base station and SGSN are Iu-PS interface, and the interface between MSC and SGSN is Gs interface, SGSN and GGSN Between interface be Gn/Gp interface, SGSN is connected by Gr interface with HLR.

MSC is that the equipment of Call Transfer service and Call- Control1 is provided between phone and data system.MSC conversion is all In mobile phone and Public Switched Telephone Network (public switched telephone nsetwork, PSTN) and its Calling between his mobile phone.MSC completes the functions such as calling connection, handover control, wireless channel management.

SGSN mainly completes the routing forwarding of packet data package, mobile management, session management, Logical Link Management, mirror Power and encryption, ticket such as produce and export at the functions.It provides the connection with packet radio controller PCU by Gb Interface, carries out The management of mobile data, such as user identity identification, encryption, the functions such as compression；It is connected by Gr interface with HLR, carries out number of users According to the access and access control in library；It also passes through gn interface and is connected with GGSN, provides IP data packet to the biography between radio-cell The functions such as defeated access and protocol conversion；SGSN can also be provided and the Gs interface of MSC connects and the Gd interface between SMSC Connection, to functions such as collaborative work and the short message receiving-transmittings of supporting data service and Circuit Service.

GGSN plays gateway effect, it can be with a variety of different data network connections, such as ISDN (integrated services digital network, ISDN), PSPDN Packet Switched Public Data Network (packet Sswitched public data network, PSPDN) and local area network (local area network, LAN) etc..GGSN can Protocol conversion is carried out with the GPRS packet data package during GSM is netted, so as to which these packet data packages are transmitted to distal end TCP/IP or X.25 network.

HLR is the server of storing user subscription information, is mainly responsible for the subscription data and mobile subscriber for managing user Location information.In the application, HLR can be used for storing the corresponding relationship of terminal iidentification, access point name and GGSN.

B referring to fig. 2, Fig. 2 B are the schematic network structure of core net in 4G.

In 4G the network element of core net specifically include that mobility management entity (mobility management entity, MME), gateway (serving gateway, SGW), grouped data network gateway (packet data network Gateway, PGW), home signature user server (home subscriber server, HSS) and application server.

In 4G, the communication interface between terminal and base station is Uu interface, and the communication interface between base station and MME is S1- MME interface, the communication interface between base station and S-GW is S1-U interface, and the communication interface between SGW and PGW connects for S5/S8 Mouthful, the communication interface between SGW and MME is S11 interface, and the communication interface between MME and HSS is S6 interface.

The major function of MME includes access control (including safety and admissions control), the mobile management (position of tracking UE Set), attachment (including holds evolved packet core (evolved packet core, EPC) with attachment removal, conversation management functional Foundation, modification and the release of load), the selection of S-GW and P-GW etc..

The major function of SGW includes: that the routing and forwarding of data packet, i.e., the use that will be received are carried out under the control of MME User data is transmitted to specified PGW network element, and because sending and receiving is general data transfer platform (general data Transfer platform, GTP) protocol data packet, to not need to carry out format conversion, briefly SGW to data packet yet It is exactly the bi-directional transfer path of GTP protocol data packet.

The major function of PGW includes packet filtering function, Lawful intercept function, the IP address of UE distribution function based on user Can, data packet transport layer label be carried out in line link over/under, carries out the charging of the uplink/downlink grade of service and service level door Control, carry out the control of uplink/downlink rate based on business etc..In addition, P-GW also provides Uplink/Downlink bearing binding and upper Line link binds verifying function.

HSS is the server of storing user subscription information, is mainly responsible for the subscription data and mobile subscriber for managing user Location information.In the application, HSS can be used for storing the corresponding relationship of terminal iidentification, access point name and PGW.

C referring to fig. 2, Fig. 2 C are the schematic network structure of core net in 5G.

The network element that core net includes in 5G is functional unit, it may include for accessing and the unit of mobile management function AMF (access and mobility management function), for the cell S MF of conversation management functional (session management function), the UDM (unified data management) for uniform data management.

It is mainly communicated by serviceization interface between network element each in 5G, P2P interface name can be used and carry out table Show the serviceization interface.Wherein, N11 interface communication can be used in AMF and SMF, and AMF and UDM use N8 interface communication, SMF N10 interface communication is used between UDM.

The major function of AMF includes: access and mobile management function to ps domain, mainly supports registration management, connection management, reachable Property management, mobile management, access authentication, insertion authority etc..

The major function of SMF includes: conversation management functional, mainly support session establishment, session modification, session release, The distribution of the address UEIP and management etc..

UDM is the server for storing user subscription information, and the subscription data and movement for being mainly responsible for management user are used The location information at family.In the application, UDM can be used for storing the corresponding relationship of terminal iidentification, access point name and SMF.

Intelligible, the subsequent network side mentioned of the application refers to the core net in above-mentioned communication system, and network refers to energy Enough and terminal carries out the outer data network of data interaction, such as Internet, WAP site, conglomerate's internal network, row Industry internal private network etc..

In the application, SGSN, MME and AMF that conversation management functional is used in core net can be known as the first equipment, it will be with GGSN, PGW and SMF of different data network connections are known as the second equipment, by HLR, HSS of storing user subscription data and UDM is known as third equipment.

Referring to Fig. 3, Fig. 3 is the structural schematic diagram of the first equipment provided by the present application.First equipment is equipment of the core network, In the application, the first equipment can be implemented as the AMF in MME, 5G in SGSN, 4G in 2/3G communication system.

The first equipment 10 of some embodiments of the present application offer is shown with reference to Fig. 3, Fig. 3.First equipment 10 can be real SGSN, MME and AMF in ready-made communication system.As shown in figure 3, the first equipment 10 can include: communication interface 103, one or Multiple first device handlers 101, transmitter 107, receiver 109, coupler 111, antenna 113 and memory 105.These Component can be connected by bus or other way, and Fig. 3 by bus for being connected.Wherein:

Communication interface 103 can be used for the first equipment 10 in other communication equipments, such as 2/3G terminal, BS, NodeB, GGSN, HLR, UE, eNode B, SGW, PGW, HSS in 4G, UE, SMF, UDM etc. in 5G are communicated.In the specific implementation, Communication interface 103 can be network communication interface, such as LTE (4G) communication interface, 5G or the following communication newly eated dishes without rice or wine connect Mouth, cellular network interface, WLAN interface etc..It is not limited to wireless communication interface, the first equipment 10 can be configured with wired lead to Interface (such as Ethernet interface) is believed to support wire communication.

Antenna 113 can be used for the electromagnetic wave being converted into the electromagnetic energy in transmission line in free space, or will be freely empty Between in electromagnetic wave be converted into the electromagnetic energy in transmission line.Coupler 111 can be used for messenger being divided into multichannel, distribute to more A receiver 109.

Transmitter 107 can be used for carrying out transmitting processing to the signal that the first device handler 101 exports, for setting to other Preparation penetrates signal.Receiver 109 can be used for carrying out reception processing to 113 received signal of antenna, for receiving other equipment hair The signal penetrated.In some embodiments of the present application, transmitter 107 and receiver 109 can regard a wireless modulation-demodulation as Device.In the first equipment 10, the quantity of transmitter 107 and receiver 109 may each be one or more.

Memory 105 is coupled with the first device handler 101, for storing various software programs and/or multiple groups instruction.Tool During body is realized, memory 105 may include the memory of high random access, and may also comprise nonvolatile memory, such as One or more disk storage equipments, flash memory device or other non-volatile solid-state memory devices.Memory 105 can store The embedded OSs such as operating system, such as uCOS, VxWorks, RTLinux.It is logical that memory 105 can also store network Believe program, which can be used for and one or more optional equipments, one or more terminal devices, and one or more A second equipment is communicated.

In some embodiments of the present application, one or more embodiments that memory 105 can be used for storing the application are mentioned Realization program of the method for message interaction of confession in 10 side of the first equipment.What one or more embodiments about the application provided The realization of method for message interaction, please refers to subsequent embodiment.

First device handler 101 can be used for carrying out foundation and dismounting of wireless channel management and communication link etc..It can be with It is general processor, such as central processing unit (central processing unit, CPU), processor 101 may also include firmly Part chip, above-mentioned hardware chip can be the combination of one or more of: specific integrated circuit (application Specific integrated circuit, ASIC), field programmable gate array (field programmable Gate array, FPGA), Complex Programmable Logic Devices (complex programmable logic device, CPLD). Processor 101 can handle the data that receiver 109 receives, processor 601 can also handle will be sent to transmitter 107 with The data transmitted for use by antenna 113.

In the embodiment of the present invention, the first device handler 101 can be used for reading and executing computer-readable instruction.Specifically , the first device handler 101 can be used for calling the program being stored in memory 105, such as the one or more of the application The method for message interaction that embodiment provides and executes the instruction that the program includes in the realization program of 10 side of the first equipment.

It should be noted that the first equipment 10 shown in Fig. 3 is only a kind of implementation of the embodiment of the present invention, actually answer In, the first equipment 10 can also include more or fewer components, here with no restriction.

Referring to fig. 4, Fig. 4 is the structural schematic diagram of the second equipment provided by the present application.Second equipment is equipment of the core network, In the application, the second equipment can be implemented as the SMF in PGW, 5G in GGSN, 4G in 2/3G communication system.

As shown in figure 4, the second equipment 20 can include: communication interface 203, one or more processors 201, transmitter 207, Receiver 209, coupler 211, antenna 213 and memory 205.These components can be connected by bus or other way, figure 4 by bus for being connected.Wherein:

Communication interface 203 can be used for the second equipment 20 in other communication equipments, such as 2/3G SGSN, BS, Node B, ENode B, MME, SGW, HSS in HLR, 4G, AMF, UDM etc. in 5G.In the specific implementation, communication interface 203 can be net Network communication interface, such as LTE (4G) communication interface, 5G or the following communication interface newly eated dishes without rice or wine, cellular network interface, WLAN Interface etc..It is not limited to wireless communication interface, the second equipment 20 can be configured with wired communication interface, and (such as Ethernet connects Mouthful) support wire communication.

Antenna 213 can be used for the electromagnetic wave being converted into the electromagnetic energy in transmission line in free space, or will be freely empty Between in electromagnetic wave be converted into the electromagnetic energy in transmission line.Coupler 211 can be used for messenger being divided into multichannel, distribute to more A receiver 209.

Transmitter 207 can be used for carrying out transmitting processing to the signal that processor 201 exports, and believe for emitting to other equipment Number.Receiver 209 can be used for carrying out reception processing to 213 received signal of antenna, for receiving the letter of other equipment transmitting Number.In some embodiments of the present application, transmitter 207 and receiver 209 can regard a radio modem as.? In two equipment 20, the quantity of transmitter 207 and receiver 209 may each be one or more.

Memory 205 is coupled with processor 201, for storing various software programs and/or multiple groups instruction.Specific implementation In, memory 205 may include the memory of high random access, and may also comprise nonvolatile memory, such as one or Multiple disk storage equipments, flash memory device or other non-volatile solid-state memory devices.Memory 205 can store operation system System, such as the embedded OSs such as uCOS, VxWorks, RTLinux.Memory 205 can also store network communication program, The network communication program can be used for and one or more optional equipments, one or more terminal devices, one or more first are set It is standby to be communicated.

In some embodiments of the present application, one or more embodiments that memory 205 can be used for storing the application are mentioned Realization program of the method for message interaction of confession in 20 side of the second equipment.What one or more embodiments about the application provided The realization of method for message interaction, please refers to subsequent embodiment.

Processor 201 can be used for carrying out foundation and dismounting of wireless channel management and communication link etc..It can be general place Device, such as central processing unit (central processing unit, CPU) are managed, processor 201 may also include hardware chip, Above-mentioned hardware chip can be the combination of one or more of: specific integrated circuit (application specific Integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA), Complex Programmable Logic Devices (complex programmable logic device, CPLD).Processor 201 can The data that processing receiver 209 receives, processor 601, which can also be handled, will be sent to transmitter 207 for use by antenna The data of 213 transmission.

In the embodiment of the present invention, processor 201 can be used for reading and executing computer-readable instruction.Specifically, processor 201 can be used for calling the program that is stored in memory 205, such as the message that provides of one or more embodiments of the application Exchange method and executes the instruction that the program includes in the realization program of 20 side of the second equipment.

It should be noted that the second equipment 20 shown in Fig. 4 is only a kind of implementation of the embodiment of the present invention, actually answer In, the second equipment 20 can also include more or fewer components, here with no restriction.

Referring to Fig. 5, Fig. 5 is the structural schematic diagram of terminal provided by the present application.As shown in figure 5, terminal 30 can include: base band Chip 110, memory 115 (one or more computer readable storage mediums), radio frequency (RF) module 116, peripheral system 117. These components can communicate on one or more communication bus 114.

Peripheral system 117 is mainly used for realizing the interactive function between terminal 30 and user/external environment, and main includes eventually The input/output unit at end 30.In the specific implementation, peripheral system 117 can include: touch screen controller 118, camera controller 119, Audio Controller 120 and sensor management module 121.Wherein, each controller can be with corresponding peripheral equipment (such as touch screen 123, camera 124, voicefrequency circuit 125 and sensor 126) coupling.It should be noted that peripheral system 117 It can also include other I/O peripheral hardwares.

It includes: one or more processors 111, clock module 112 and power management module that baseband chip 110, which can integrate, 113.The clock module 112 being integrated in baseband chip 110 is mainly used for generating information transmission and timing control for processor 111 Clock required for making.The power management module 113 being integrated in baseband chip 110 is mainly used for as processor 111, radio frequency Module 116 and peripheral system provide stable, pinpoint accuracy voltage.

Radio frequency (RF) module 116 is mainly integrated with receiver and the transmitting of terminal 30 for sending and receiving radiofrequency signal Device.Radio frequency (RF) module 116 passes through radiofrequency signal and the network equipment and other communication apparatus communications.In the specific implementation, radio frequency (RF) module 116 may include but be not limited to: antenna system, RF transceiver, one or more amplifiers, tuner, one or more A oscillator, digital signal processor, CODEC chip, SIM card and storage medium etc..It in some embodiments, can be independent Chip on realize radio frequency (RF) module 116.In this application, radio-frequency module 116 can be used for carrying out information friendship with the network equipment Mutually.

Memory 115 is coupled with processor 111, for storing various software programs and/or multiple groups instruction.Specific implementation In, memory 115 may include the memory of high random access, and may also comprise nonvolatile memory, such as one or Multiple disk storage equipments, flash memory device or other non-volatile solid-state memory devices.Memory 115 can store operation system It unites (following abbreviation systems), such as the embedded OSs such as ANDROID, IOS, WINDOWS or LINUX.Memory 115 Network communication program can also be stored, which can be used for and one or more optional equipments, one or more whole End equipment, one or more network equipments are communicated.Memory 115 can also store user interface program, the user interface Program can show by patterned operation interface by the content image of application program is true to nature, and pass through menu, right Talk about the control operation that the input controls such as frame and key receive user to application program.

It should be appreciated that terminal 30 is only an example provided by the present application, also, terminal 30 can have the component than showing More or fewer components can combine two or more components, or can have the different configurations of component to realize.

Based on aforementioned wireless communication system, the first equipment 10, the second equipment 20 and the corresponding embodiment of terminal 30, The embodiment of the present application provides a kind of method for message interaction.

The application in order to facilitate understanding, first introduce this application involves technical term.

(1) session connection

In the application, between terminal and data network between the connection established be known as session connection, terminal passes through session connection Packet Data Network is had access to, accessible specific business carries out data transmission.

One terminal may exist multiple session connections, what each session connection showed to initiate between terminal and network side One Packet data service calling, each session connection have different IP address and different access point name.Terminal and net After session connection is established in network side, IP address and data network communications can be passed through.Access point name in session connection then identifies The type of the data network of terminal access in the session connection can refer to subsequent (two) point about the detailed of access point name Thin description.

Specifically, have session connection in the different network architectures in the application, the following detailed description of.

1, in 2/3G, session connection be block data protocol context (packet data protocol context, PDP context).Terminal can request to establish PDP Context between network side after being registered to network side.

2, in 4G, session connection be public data network connection (public data network connectivity, PDN connectivity).Terminal establishes PDN connection between request and network side while initiating registration process；It is registering After the completion, terminal can also request to establish others PDN connection between network side.

3, in 5G, session connection is data protocol unit (Protocol Data Unit, PDU protocol Data Unit) meeting Words.Terminal can request to establish PDU session between network side after being registered to network side.

It is intelligible, it is not limited to 2/3G, 4G, 5G, in following communication system evolution, the title of session connection may Change, the session connection mentioned in the application is equally applicable to following communication system.

(2) failure session connection

In the application, failure session connection refers in the case where network side or terminal are abnormal, and is deleted by network side Session connection.After network side deletes failure session connection, it is identical with failure session connection that terminal can re-request access Network, be equivalent to and re-establish a session connection identical with failure session connection, to continue the business of terminal side.

Specifically, terminal abnormal can include: situations such as terminal is fallen shutdown caused by net, terminal faults itself or restarted. Network side is abnormal can include: situations such as network equipment (access network equipment or equipment of the core network) delay machine, the network equipment reset.

The following detailed description of the failure session connection being likely to occur under the different network architectures.

1、2/3G

In 2/3G, after terminal booting, normal registration to network side could be to net after being registered to network side first Session connection is established in the request of network side.

(1) terminal off-grid, i.e. terminal have become the state being detached from from network side from the state for being registered to network side.Terminal When off-grid, the session connection that terminal is established after normal registration to network side before can all be deleted by network side, that is, terminal All session connections established after registering are all as failure session connection.

In this case, terminal needs to reregister with network side, then re-establishes to network side request deleted Failure session connection.

(2) the non-off-grid of terminal is still registered in network side, but one or more session connections of terminal are deleted by network side It removes.

In this case, only one or more session connections of terminal are deleted by network side, and terminal is still registered In network side, at this point, planting situation compared to (1), terminal directly can request weight to network side without reregistering with network side It is new to establish deleted failure session connection.

2、4G

In LTE system, network side is arrived in attachment (attach) first after terminal booting, also, is being attached to network side There is a session connection establishment process simultaneously.That is, terminal can request to establish a session connection to network side while attachment. After terminal is attached to network side, it can also request to establish other session connections to network side.

(1) terminal off-grid, i.e. terminal have become the state being detached from from network side from the state for being attached to network side.Terminal When off-grid, the session connection that terminal is established while being normally attached to network side before and later can all be deleted by network side It removes, that is, the session connection established while terminal is attached to network side and later is all failure session connection.

In this case, terminal needs to be re-attached to network side, re-requests while attachment and later and builds Stand deleted session connection.

(2) the non-off-grid of terminal is still attached to network side, but one or more session connections of terminal are deleted by network side It removes.It is deleted that is, terminal is attached to the one or more session connections established after network side, deleted session connection is Failure session connection.

3、5G

The case where in 5G with 2/3G, is identical, and after terminal booting, normal registration to network side first is being registered to network After side, it could request to establish session connection to network side.

(1) terminal off-grid, all session connections that endpoint to register is established later are all failure session connection.

(2) the non-off-grid of terminal is still registered in network side, but one or more session connections of terminal are deleted by network side It removes.Deleted one or more session connections are failure session connection.

Above-mentioned two situations are all identical in 2/3G, can refer to associated description.

(3) access point name

Terminal all accesses external network by access point name, access point name is for marking in each session connection Know the network that terminal accesses in the session connection.

Specifically, a terminal can have multiple session connections, different session connections has different access point name, no Same access point name indicates that the network for the range and access that terminal can access is different.The addressable external network of terminal can Including Internet, WAP site, conglomerate's internal network, industry internal private network etc..

Specifically, all include access point name in the different network architectures in the application, the following detailed description of.

1, in 2/3/4G, Access Point Name is known as APN (access point name).

2, in 5G, Access Point Name is known as data network title (data network name, DNN).

It is not limited to 2/3G, 4G, 5G, in following communication system evolution, the address of access point name may change, this The access point name mentioned in application is equally applicable to following communication system.

It can be found in table 1, table 1 shows 3 different APN points in case where Access Point Name is known as APN in 2/3/4G Not corresponding network.Wherein, APN1 corresponds to network 1, and APN2 corresponds to network 2, APN3 corresponds to network 3.That is, terminal can Network 1 is accessed by APN1, network 2 is accessed by APN2, network 3 is accessed by APN3.Wherein, network 1, network 2, network 3 It can be any one in outer data network mentioned above.

APN	Network
		APN1	Network 1
APN2	Network 2
		APN3	Network 3

The corresponding relationship of table 1 APN and network

It is intelligible, terminal to network side request establish a session connection when, the session connection have one it is corresponding APN (may be what terminal reported, it is also possible to network side selection), network side determines terminal access by the corresponding APN Network, and be the IP address in the available terminal of the terminal distribution network to be accessed.For example, when terminal request establishes session When connection, while when having reported the APN1 in table 1, network side can determine that terminal request accesses network 1 by APN1.

(3) first equipment and the second equipment

Intelligible, in the different network architectures, the first equipment, the second equipment are implemented as different network elements.? In 2/3G, the first equipment is embodied as SGSN, and the second equipment is embodied as GGSN；In 4G, the first equipment is embodied as MME, and second sets It is standby to be embodied as PGW；In 5G, the first equipment is embodied as AMF, and the second equipment is embodied as SMF.

Specifically, the first equipment is located at core net, effect is to be selected as it with distributing IP for the session connection of terminal request Second equipment of location.Briefly, the first equipment can take according to the access point name in the session connection of terminal request Second equipment is selected in multiple second equipment for the access point name of being engaged in, and is terminal distribution IP address.

Specifically, the second equipment is to distribute the network element of IP address in core net for the session connection of terminal request.In terminal In the case where establishing multiple session connections to network side request, the second equipment of network side can be multiple sessions of terminal request Connection all distributes an IP address respectively.

Referring to Fig. 6, Fig. 6 is the flow diagram that terminal provided by the present application initiates session connection.

S101, terminal request establish session connection.

Firstly, the session connection that terminal request is established has corresponding access point name, the network that terminal wants access to is indicated Type.

S102, the first equipment select corresponding second equipment according to the access point name in the session connection of terminal request For terminal distribution IP address.

Specifically, network side includes multiple second equipment, can be classified according to different types of access point name.Simply Ground says that access point name and the second equipment are one-to-many relationships, and second equipment can only service an access point name, Service the same access point name the second equipment can have it is multiple.The second equipment of some access point name is served as eventually The IP address for holding distribution can be used for the corresponding network of the terminal access access point name.

When terminal establishes session connection to network side request, the first equipment is according to connecing in the session connection of terminal request Access point title arbitrarily selects second equipment for terminal distribution IP in multiple second equipment for servicing the access point name Location.

For example, Fig. 7 A is by taking the network architecture of 4G as an example, referring to Fig. 7 A with the correspondence of APN and network shown in above-mentioned table 1 Premised on relationship, wherein core net is the schematic diagram that UE distributes IP address when Fig. 7 A shows UE request PDN connection.Such as Fig. 7 A Shown, between APN and the second equipment relationship are as follows: the second equipment for serving APN1 includes PGW1, PGW2, PGW3；It serves The second equipment of APN2 includes PGW4, PGW5, and the second equipment for servicing APN3 includes PGW6, PGW7.

Firstly, referring to the case where session connection is established in UE1 request in Fig. 7 A.

When UE1 establishes session connection to network side request, if having reported APN1, show that UE1 request passes through the session Connection to access network 1, then the first equipment can in multiple second equipment (PGW1, PGW2, PGW3) for serving APN1, Any one second equipment is selected to distribute the IP address of accessible network 1 for the UE1 session connection requested.As shown in Figure 1, First equipment has selected PGW1 to distribute IP address for UE1.

Similar, when UE1 establishes session connection to network side request, if having reported APN2, the first equipment can serviced PGW4 is selected to distribute IP address for UE1 in multiple second equipment (PGW4, PGW5) of APN2；It is built in UE1 to network side request When vertical session connection, if having reported APN3, the first equipment can be in multiple second equipment (PGW6, PGW7) for serving APN3 PGW6 is selected to distribute IP address for UE1.

Similar, when session connection is established in UE2, UE3 request, the first equipment is that UE2, UE3 select the second equipment to distribute IP The case where address, is identical with UE1, can refer to Fig. 7 A and associated description.

S103, the second equipment are terminal distribution IP address, and terminal and network side establish session connection.

Referring to Fig. 7 A, PGW1 is that UE1 is assigned with IP1, and PGW4 is that UE1 is assigned with IP2, and PGW6 is that UE1 is assigned with IP3.Its His situation can and so on.

Referring to Fig. 7 B, Fig. 7 B is by taking the network architecture of 4G as an example, premised on above-mentioned table 1 and Fig. 7 A, shows UE by not Same APN establishes the schematic diagram that PDN is connected with different networks.

As shown in Figure 7 B, after 3 PDN connections that network side is terminal request are assigned with IP address respectively, UE1 and network Side has been successfully established 3 PDN connections, and UE1 can be communicated by IP1 and network 1 in PDN connection 1, can be led in PDN connection 2 It crosses IP2 and network 2 communicates, can be communicated in PDN connection 3 by IP3 and network 3.The case where UE2, UE3 can and so on.

The process of session connection is initiated it is found that access point name and the second equipment, terminal and the by terminal shown in fig. 6 Two equipment are not one-to-one relationships.

Specifically, since the possibility for servicing the same access point name has multiple second equipment, an access point name pair There should be multiple second equipment, therefore, the second equipment of terminal distribution IP address can not be determined as by access point name.

Specifically, since a terminal can request multiple session connections, that is, a terminal can request different meetings Different access point name is reported when words connection, and is respectively terminal distribution IP address by the second multiple and different equipment.? That is a terminal is corresponding with multiple second equipment.Therefore, terminal distribution IP address can not be determined as by terminal.

Based on above-mentioned communication system and technical term, present applicant proposes a kind of method for message interaction, in terminal Session connection is deleted, i.e. failure session connection, and when terminal establishes session connection to network side request again, terminal is asked Seek the identical IP address of failure session connection of network side for terminal distribution and before.Network side with distributing to the IP of terminal In the immovable situation in location, terminal can continue the IP address with last time, continue business, and user will not perceive business and be interrupted.

In the application, after failure session connection, in order to continue terminal with the IP address in failure session connection, It needs to guarantee following two points: (1) being that the failure session connection of terminal distributes the of IP address after failure session connection One equipment is that terminal retains the IP address.(2) terminal is when re-requesting session connection, still for terminal distribution IP address The first equipment of IP address is distributed before being for the failure session connection of terminal.

Above-mentioned two o'clock is in the application, and terminal can continue the premise with IP address after failure session connection.Join below See Fig. 8, Fig. 8 be terminal provided by the present application break down session connection when flow diagram.

S201, endpoint to register to network side, establish session connection between terminal and network side.

Specifically, network side is first registered with after terminal booting, and request to establish session connection with network side to access Data network.The first equipment in network side core net can be selected according to the access point name in the session connection of terminal request Corresponding second equipment is terminal distribution IP address.

S202, the first equipment are by the corresponding relationship of terminal iidentification, access point name, the second equipment storage to local or the Three equipment.

Specifically, after being successfully established session connection between terminal and network side, for the session connection, terminal iidentification, Access point name has a corresponding relationship for the second equipment of the session connection distribution IP address of terminal.It is closed according to the correspondence System can uniquely determine in the case where determining terminal iidentification, access point name and distribute IP address for the session connection of terminal The second equipment.

In the specific implementation, the corresponding relationship can be stored in the first mapping table.Since the first equipment can be multiple Terminal service may include the corresponding relationship in each session connection that multiple terminals are requested respectively in the first mapping table.It can refer to Table 2, table 2 show a kind of possible storage form premised on the example in above-mentioned Fig. 7 A.

2 first mapping table of table

Implementation steps S202, after storing corresponding relationship, after terminal breaks down session connection, it is ensured that terminal is asked again It asks when establishing session connection, the first equipment can be the failure session connection distribution IP of terminal before selecting according to corresponding relationship First equipment of address is terminal distribution IP address.

In an alternative embodiment, the first equipment can also save the corresponding Access Point Name of each session connection of terminal Claim.In failure session connection, when terminal re-request establishes session connection, the first equipment can be according to the access point of preservation Title finds the second equipment in failure session connection for terminal distribution IP address, can refer to subsequent associated description.

S203, network side or terminal are abnormal, and network side deletes session connection, and the second equipment is for terminal reservation IP Location.

Specifically, the session connection that network side is deleted is the failure session connection in the application, failure session connection Definition can refer to the associated description of technical term above, and this will not be repeated here.

It is that the failure session connection of terminal distributes the second of IP address after failure session connection in the application Equipment can retain IP address for terminal, and the time of reservation can preset.It is that terminal retains IP address device in the second equipment The IP address will not be distributed to other terminals by part, the second equipment.

It is intelligible, be terminal the failure session connection distribution IP address the second equipment can be multiple terminal distributions IP address, it is possible to there are multiple terminals failure session connection all occur whithin a period of time.Optionally, in this case, Second equipment can store terminal iidentification and distribute to the mapping table of the IP address of terminal, in terminal failure session connection, Second equipment can retain IP address for the terminal.Referring to following table, following table shows a kind of possibility premised on the example in Fig. 6 Storage form.

The corresponding relationship of table 3 terminal iidentification and IP address

The terminal in the application that above-mentioned Fig. 8 has been described in detail break down session connection when process, in the application, terminal hair It can be re-requested after raw failure session connection and establish session connection.Referring to Fig. 9, Fig. 9 is method for message interaction provided by the present application Flow diagram, terminal can re-request by the method for message interaction and establish session connection.As shown in figure 9, the message is handed over Mutual method may include following steps:

S301, terminal send first message to the first equipment, and first message establishes session connection for terminal request, and first It include the mark and the continuous request of IP address of terminal in message.

Specifically, terminal needs to re-establish session connection, and failure session connection can after failure session connection Referring to the associated description of technical term above.

In the specific implementation, first message is first sent to access net by terminal, the first equipment is transmitted to using access net.It can Understanding, the first equipment in method shown in Fig. 8 is the first equipment that terminal accesses in failure session connection, and shown in Fig. 9 The first equipment in method is that terminal re-request establishes the first equipment accessed when session connection, that is, the in Fig. 8 and Fig. 9 One equipment is likely to be same, it is also possible to be different equipment.

In the application, first message establishes session connection for terminal request, disappears the following detailed description of the first of the application Several implementations of breath.

It 1, include: terminal iidentification and the continuous request of IP address in first message.

Wherein, terminal iidentification can uniquely determine a terminal, and terminal iidentification can be international mobile subscriber identity (international mobile subscriber identification number, IMSI), SAE Temporary Mobile (SAE temporary mobile station identifier, S-TMSI) etc..

Wherein, the continuous request of IP address will distribute to terminal in failure session connection before for terminal request network side IP address distributes to terminal.Specifically, the continuous request of IP address has the possible implementation of following two:

(1) first message is extended, the continuous request of IP address is realized using one or more bits in first message. For example, a bit in first message can be used, when the bit value of making an appointment is " 1 ", terminal request is continuous to use IP Address.

(2) direct IP address of the carried terminal in failure session connection in first message.Terminal is passing through first message When re-request establishes session connection, can directly in first message IP address of the carried terminal in failure session connection.When First equipment receives when carrying IP address in first message, would know that terminal request is continuous and is used in failure session connection IP address.

It 2, include: terminal iidentification, the continuous request of IP address, access point name in first message.

In the 2nd kind of situation, terminal iidentification and IP address it is continuous with request all with above-mentioned 1st point in it is identical, this will not be repeated here.

Wherein, the access point name of access point name and terminal in failure session connection is identical, indicates terminal request weight Newly establish session connection, identical network in access and failure session connection.

In an alternative embodiment, the application can include: step S302, the first equipment obtains the first mapping table, reflects first Determine that second for terminal distribution IP address in failure session connection sets according to terminal iidentification and access point name in firing table It is standby.

Firstly, the first equipment will first determine the second equipment in failure session connection for terminal distribution IP address.Confirmation Mode are as follows: in the first mapping table, according to terminal iidentification and the corresponding access point name of failure session connection, determine therefore Hinder the second equipment in session connection for terminal distribution IP address.

Wherein, table 2 and associated description, the first mapping table can store in the failure session connection process referring to shown in Fig. 8 In third equipment, also it can store in failure session connection as in the first equipment of terminal distribution IP address.That is, first sets It is standby that the first mapping table can be obtained from third equipment；The first equipment and terminal weight that terminal accesses in failure session connection New request is established in the case that the first equipment accessed when session connection is same, and the first equipment can obtain the from local One mapping table；It is connect when the first equipment and the terminal re-request that terminal accesses in failure session connection establish session connection In the case that the first equipment entered is same, the first equipment other first equipment that terminal accesses from failure session connection The first mapping table of middle acquisition.

Wherein, terminal iidentification is carried in first message.

Wherein, the corresponding access point name of failure session connection may be carried in first message.If in first message Access point name is not carried, then the second equipment can be according to the corresponding access point of each session connection of the terminal of storage Title selects the corresponding access point name of failure session connection, can refer to the associated description of Fig. 8 step S202.

For example, first message is had sent to the first equipment in UE1 if the form of the first mapping table is as shown in table 2, and When first message carries " UE ID1 " " APN1 ", the first equipment be can determine in failure session connection as terminal distribution IP address The second equipment be PGW1.

S303, the first equipment send second to the second equipment in failure session connection being terminal distribution IP address and disappear Breath；Second message establishes session connection for terminal request, include in second message terminal mark and IP address it is continuous with asking It asks.

The first equipment determined in failure session connection for terminal distribution IP address the second equipment after, the first equipment can Second message is sent to second equipment, it can be ensured that when terminal re-requests session connection, in failure session before being still Being the second equipment of terminal distribution IP address in connection distributes IP address for it, it is ensured that terminal, which can continue, uses IP address.

Specifically, the mark and IP address of the terminal for including in second message are continuous with asking first message in summation step S301 It is similar, it can refer to associated description, this will not be repeated here.

S304, the second equipment send third message to the first equipment, and third message is used to establish the meeting of terminal request foundation Words connect, and include the IP address that the second equipment distributes to terminal in failure session connection in third message.

Specifically, the second equipment is that terminal retains IP address in the application after failure session connection.Second equipment Receive the first equipment transmission second message after, according to the IP address of second message it is continuous request and terminal mark, The IP address that terminal is distributed in failure session connection is again assigned to terminal.

It can be found in the table 3 in Fig. 8 the method, if carrying " UE ID1 " in second message, the second equipment can be by " UE The corresponding IP address of ID1 " " IP1 " distributes to terminal.

S305, the first equipment send the 4th message to terminal, and the session that the 4th message is used to establish terminal request foundation connects It connects, includes the IP address that the second equipment distributes to terminal in failure session connection in the 4th message.

In the specific implementation, the 4th message is first sent to access net by the first equipment, terminal is transmitted to using access net.Eventually After termination receives the 4th message, it has been successfully established session connection, terminal can be used to be communicated between the IP address distributed and network, The continuous use for realizing IP address can be avoided user and perceive service disconnection, promotes user experience.

The network architecture for combining 2/3G, 4G, 5G separately below, is described in detail Fig. 8, method shown in Fig. 9.

Firstly, before Figure 10 is terminal failure session connection in 2/3G, re-establishing session to terminal referring to Figure 10 The flow diagram of connection.

In 2/3G, first message is PDP context activation request message (Active PDP Context Request), Second message is that PDP Context is established request message (Creat PDP Context Request), and third message is PDP or more Text is established and is replied message (Creat PDP Context Response), and the 4th message is context activation received message (Active PDP Context Accept)。

1, endpoint to register is to network side, and establishes PDP Context.

Specifically, network side is first registered in terminal in the present embodiment, being registered to network side could establish on PDP later Hereafter.Assuming that terminal accesses Old SGSN in step 1, the corresponding Access Point Name of PDP Context that terminal is established is known as APN1, GGSN in Figure 10 serves APN1, and is terminal distribution IP address IP1.

2, Old SGSN stores the corresponding relationship of terminal iidentification, APN, GGSN into local or HLR.

3, terminal or network side are abnormal, and network side deletes PDP Context, and GGSN retains the IP address of terminal.

Specifically, the PDP Context established in step 1 can regard failure session connection as.

4, terminal reregisters with network side.

Intelligible, step 4 is optional step, if terminal off-grid, thens follow the steps 4, if terminal is still registered in network Side then skips step 4 and executes step 5.Here, the correlation that can refer to failure session connection in 2/3G in technical term above is retouched It states.

5, terminal sends PDP context activation request message (Active PDP Context to New SGSN It Request), include the mark and the continuous request of IP address of terminal in PDP Context activation request message.

Intelligible, Active PDP Context Request is first sent to access net by terminal, then by access net Equipment, such as Active PDP Context Request is transmitted to New SGSN by base station.

6, New SGSN obtains the corresponding relationship of terminal iidentification, APN, GGSN from Old SGSN or HLR, determines failure It is the GGSN of terminal distribution IP address in session connection.

7, New SGSN sends PDP Context into failure session connection for the GGSN of terminal distribution IP address and establishes request Message (Creat PDP Context Request), it includes that GGSN connects in failure session that PDP Context, which is established in request message, The IP address of the terminal is distributed in connecing.

8, GGSN sends PDP Context foundation to New SGSN and replies message (Creat PDP Context Response), the IP address that GGSN in faulty session connection is terminal distribution is carried in the message.

9, New SGSN sends context activation received message (Active PDP Context Accept) to terminal, should The IP address that GGSN in faulty session connection is terminal distribution is carried in message.

Intelligible, Active PDP Context Accept is first sent to access net by New SGSN, then by access net In equipment, such as Active PDP Context Accept is transmitted to terminal by base station.

Session connection is re-established to terminal before Figure 11 is terminal failure session connection in 4G referring to Figure 11 Flow diagram.

In Figure 11, the session connection that terminal is established when being attached to network is failure session connection.First message is attachment Request message (Attach Request), second message are session establishment request message (Creat Session Request), Third message is that session establishment replies message (Creat Session Response), and the 4th message is attachment received message (Attach Accept)。

1, terminal is attached to network side, establishes PDN connection while attachment.

Specifically, in the present embodiment, it is assumed that terminal accesses OldMME in step 1.The PDN connection that terminal is established is corresponding Access Point Name is known as APN1, and the PGW in Figure 11 serves APN1, and is terminal distribution IP address IP1.

2, OldMME stores the corresponding relationship of terminal iidentification, APN, PGW into local or HSS.

3, terminal or network side are abnormal, and network side deletes PDN connection, and PGW retains the IP address of terminal.

Specifically, terminal is attached to the PDN connection established while network side and can regard failure session connection as in step 1.

4, terminal sends Attach Request message (Attach Request) to New MME, includes terminal iidentification in the message With the continuous request in the address IP.

Specifically, being added with PDN connection request message (PDN Connectivity in Attach Request Request), i.e. PDN connection is established in terminal request while attachment.

Intelligible, Attach Request is first sent to eNode B by terminal, then by eNode B by Attach Request is transmitted to New MME.

5, New MME obtains the corresponding relationship of terminal iidentification, APN, PGW from OldMME or HSS, determines failure session It is the PGW of terminal distribution IP address in connection.

6, New MME sends session establishment request message into failure session connection for the PGW of terminal distribution IP address (Creat Session Request) includes IP that PGW distributes to the terminal in failure session connection in the message Location.

Intelligible, Creat Session Request is first sent to SGW by New MME, then forwards the message by SGW To PGW.

7, PGW sends session establishment to New MME and replies message (Creat Session Response), takes in the message It is the IP address of terminal distribution with PGW in faulty session connection.

Intelligible, Creat Session Request is first sent to SGW by PGW, then forwards the message to New by SGW MME。

8, New MME sends attachment received message (Attach Accept) to terminal, carries faulty session in the message PGW is the IP address of terminal distribution in connection.

Session connection is re-established to terminal before Figure 12 is terminal failure session connection in 4G referring to Figure 12 Flow diagram.

In Figure 12, the session connection that terminal is established after being attached to network is failure session connection.First message is PDN Connection is established request message (PDN Connectivity Request), and second message is session establishment request message (Create Session Request), third message is that session establishment replies message (Create Session Response), and the 4th disappears Breath is that PDN connection replies message (Activate Default EPS Bearer Context Request).

1, terminal is attached to network side, is attached to network side and establishes PDN connection later.

Specifically, a PDN connection can be established in the present embodiment, while terminal is attached to network side, meeting after attachment Establish another PDN connection.The PDN established after attachment is connected as the failure session connection in the present embodiment.

Specifically, assuming to access Old MME in the PDN connection established after terminal attachment in step 1.What terminal was established The corresponding Access Point Name of PDN connection is known as APN1, and the PGW in Figure 11 serves APN1, and is terminal distribution IP address IP1.

2, OldMME stores the corresponding relationship of terminal iidentification, APN, PGW into local or HSS.

3, terminal or network side are abnormal, and network side deletes PDN connection, and PGW retains the IP address of terminal.

Specifically, the PDN connection that terminal is attached to that network side is established later in step 1 can regard failure session connection as.

4, terminal is re-attached to network side.

Intelligible, step 4 is optional step, if terminal off-grid, thens follow the steps 4, if terminal is still attached to network Side then skips step 4 and executes step 5.Here, it can refer to the associated description of failure session connection in 4G in technical term above.

5, terminal sends PDN connection to New MME and establishes request message (PDN Connectivity Request), this disappears It include terminal iidentification and the continuous request of IP address in breath.

Intelligible, PDN Connectivity Request is first sent to eNode B by terminal, then will by eNode B PDN Connectivity Request is transmitted to New MME.

6, New MME obtains the corresponding relationship of terminal iidentification, access point name, PGW from OldMME or HSS, determines It is the PGW of terminal distribution IP address in failure session connection.

7, New MME sends session establishment request message into failure session connection for the PGW of terminal distribution IP address (Creat Session Request) includes IP that PGW distributes to the terminal in failure session connection in the message Location.

Intelligible, Creat Session Request is first sent to SGW by New MME, then forwards the message by SGW To PGW.

8, PGW sends session connection to New MME and replies message (Creat Session Response), takes in the message It is the IP address of terminal distribution with PGW in faulty session connection.

Intelligible, reat Session Response is first sent to SGW by PGW, then forwards the message to New by SGW MME。

9, New MME sends PDN connection to terminal and replies message (Activate Default EPS Bearer Context Request), the IP address that PGW in faulty session connection is terminal distribution is carried in the message.

Session connection is re-established to terminal before Figure 13 is terminal failure session connection in 5G referring to Figure 13 Flow diagram.

In 5G, first message is PDU session establishment request message (PDU Session Establishment Request), second message is PDU session establishment request message (Namf_PDUSession_CreateSMContext), the Three message are that PDU session establishment replies message (Nsmf_PDUSession_CreateSMContext Response), the 4th Message is PDU session establishment received message (PDU Session Establishment Accept).

1, endpoint to register is to network side, and establishes PDU session connection.

Specifically, network side is first registered in terminal in the present embodiment, PDU meeting could be established later by being registered to network side Words connection.Assuming that terminal accesses OldAMF in step 1.The corresponding Access Point Name of PDU session connection that terminal is established is known as SMF in DNN1, Fig. 9 serves DNN1, and is terminal distribution IP address IP1.

2, OldAMF stores the corresponding relationship of terminal iidentification, DNN, SMF into local or UDM, alternatively, SMF will be whole The corresponding relationship of mark, access point name, SMF is held to store into UDM.

3, terminal or network side are abnormal, and network side deletes PDU session connection, and SMF retains the IP address of terminal.

Specifically, the PDU session connection established in step 1 can regard failure session connection as.

4, terminal reregisters with network side.

Intelligible, step 4 is optional step, if terminal off-grid, thens follow the steps 4, if terminal is still registered in network Side then skips step 4 and executes step 5.Here, it can refer to the associated description of failure session connection in 5G in technical term above.

5, terminal sends PDU session establishment request message (PDU Session Establishment to New AMF It Request), include the mark and the continuous request of IP address of terminal in the message.

Intelligible, PDU Session Establishment Request is first sent to access net by terminal, then by connecing PDU Session Establishment Request is transmitted to New SMF by the equipment such as eNode B in networking.

6, New AMF obtains the corresponding relationship of terminal iidentification, DNN, SMF from OldAMF or UDM, determines failure session It is the SMF of terminal distribution IP address in connection.

7, New AMF sends PDU session establishment request message into failure session connection for the SMF of terminal distribution IP address It (Namf_PDUSession_CreateSMContext), include described in SMF is distributed in failure session connection in the message The IP address of terminal.

8, SMF sends PDU session establishment to New AMF and replies message (Nsmf_PDUSession_ CreateSMContext Response), the IP address that SMF in faulty session connection is terminal distribution is carried in the message.

9, New AMF sends PDU session establishment received message (PDU Session Establishment to terminal Accept), the IP address that GGSN in faulty session connection is terminal distribution is carried in the message.

Intelligible, PDU Session Establishment Accept is first sent to access net by New AMF, then by PDU Session Establishment Accept is transmitted to terminal by the equipment in access net, such as eNode B.

The foregoing detailed description data processing method of the application, for the ease of better implementing the above-mentioned side of the application Correspondingly the relevant apparatus of the application is provided below in method.

It is the structural schematic diagram of a kind of first equipment 40 provided by the present application, the second equipment 50 and terminal 60 referring to Figure 14.

Firstly, as shown in figure 14, the first equipment 40 can include: receiving unit 401, transmission unit 402 and processing unit 403.Wherein:

The receiving unit 401, for receiving the first message of terminal transmission, the first message is asked for the terminal It asks and establishes session connection, include the mark and the continuous request of IP address of the terminal in the first message；

The processing unit 403, for generating second message, the second message establishes session for the terminal request It connects, includes the mark and the continuous request of the IP address of the terminal in the second message；

The transmission unit 402, for the second equipment in failure session connection being the terminal distribution IP address Send the second message；

The receiving unit 401, is also used to receive the third message that second equipment is sent, and the third message is used for The session connection that the terminal request is established is established, includes second equipment in the third message in the failure session The IP address of the terminal is distributed in connection；

The processing unit 403, is also used to generate the 4th message, and the 4th message is built for establishing the terminal request Vertical session connection includes that second equipment distributes to the end in the failure session connection in the 4th message The IP address at end；

The transmission unit 402 is also used to send the 4th message to the terminal.

Secondly, as shown in figure 14, the second equipment 50 can include: receiving unit 501, transmission unit 502, processing unit 503, Wherein,

The receiving unit 501, for receiving the second message of the first equipment transmission, the second message is asked for terminal It asks and establishes session connection, include the mark and the continuous request of IP address of the terminal in the second message；

The processing unit 503, for generating third message, the third message is established for establishing the terminal request Session connection, include the IP that second equipment distributes to the terminal in failure session connection in the third message Address；

The transmission unit 502, for sending the third message to first equipment.

Finally, as shown in figure 14, terminal 60 can include: receiving unit 601, transmission unit 602, processing unit 603, In:

The processing unit 603, for generating first message, the first message establishes session for the terminal request It connects, includes the mark and the continuous request of IP address of the terminal in the first message；

The transmission unit 602, for sending the first message to the first equipment；

The receiving unit 601, the 4th message sent for receiving first equipment, the 4th message is for building The session connection that the terminal request is established is stood, includes that the second equipment is distributed in failure session connection in the 4th message To the IP address of the terminal.

It should be understood that each functional unit for including about the first equipment 40, the second equipment 50 and terminal 60 is specific It realizes, can refer to earlier figures 8- Figure 13 and associated description, which is not described herein again.

In addition, present invention also provides a kind of communication systems, comprising: the first equipment and the second equipment.Wherein, described One equipment and the second equipment can be the first equipment and the second equipment in the corresponding embodiment of the method for Fig. 8-Figure 13.

In the specific implementation, first equipment can be the first equipment 10 shown in Fig. 3, second equipment can be figure Second equipment 20 shown in 4.First equipment, the second equipment can also be the first equipment 40 shown in Figure 14, respectively Two equipment 50.

Specific implementation about first equipment and the second equipment can refer to embodiment of the method, and which is not described herein again.

To sum up, implement the application, terminal can continue with IP address, and user is avoided to experience service disconnection, improve user's body It tests.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer journey Sequence product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all Or it partly generates according to process described herein or function.The computer can be general purpose computer, dedicated computing 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 calculating Machine instruction can from a web-site, computer, server or data center by it is wired (such as coaxial cable, optical fiber, Digital Subscriber Line) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or Person is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can To be magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid-state Hard disk SolidStateDisk) etc..

Claims (21)

1. a kind of method for message interaction characterized by comprising

First equipment receives the first message that terminal is sent, and the first message establishes session connection for the terminal request, It include the mark and the continuous request of IP address of the terminal in the first message；

First equipment sends second message to the second equipment in failure session connection being the terminal distribution IP address； The second message establishes session connection for the terminal request, includes mark and the institute of the terminal in the second message State the continuous request of IP address；

First equipment receives the third message that second equipment is sent, and the third message is asked for establishing the terminal The session connection of foundation is asked, includes described in second equipment is distributed in the failure session connection in the third message The IP address of terminal；

First equipment sends the 4th message to the terminal, and the 4th message is used to establish what the terminal request was established Session connection includes the IP that second equipment distributes to the terminal in the failure session connection in the 4th message Address.

2. method as described in claim 1, which is characterized in that described is the terminal distribution IP address in failure session connection The second equipment by first equipment according to the mark and the corresponding access point name of the failure session connection of the terminal It determines；

Wherein, the corresponding access point name of the failure session connection carries in the first message, alternatively, the failure meeting Words connect corresponding access point name and are selected by first equipment.

3. the method according to claim 1, which is characterized in that first equipment is in the failure session Be in connection the terminal distribution IP address the second equipment send second message before, further includes:

In the first mapping table, first equipment connects first equipment according to the mark of the terminal and the failure session Corresponding access point name is connect, determining is the second equipment of the terminal distribution IP address in the failure session connection；

Wherein, first mapping table includes: at least one terminal iidentification, at least one described terminal iidentification is corresponding connects Corresponding second equipment of access point title, described access point title；

In the first mapping table storage third equipment, alternatively, in the first equipment being stored in the failure session connection.

4. the method according to claim 1, which is characterized in that

First equipment is SGSN, and second equipment is GGSN；Alternatively,

First equipment is MME, and second equipment is PGW；Alternatively,

First equipment is AMF, and second equipment is SMF.

5. the method according to claim 1, which is characterized in that

The first message is PDP context activation request message, and the second message is that PDP Context establishes request message, The third message is that PDP Context foundation replies message, and the 4th message is context activation received message；Alternatively,

The first message is Attach Request message, and the second message is session establishment request message, and the third message is Session establishment replies message, and the 4th message is attachment received message；Alternatively,

The first message is that request message is established in PDN connection, and the second message is session establishment request message, the third Message replies message for session establishment, and the 4th message is that PDN connection replies message；Alternatively,

The first message is PDU session establishment request message, and the second message is PDU session establishment request message, described Third message is that PDU session establishment replies message, and the 4th message is PDU session establishment received message.

6. a kind of method for message interaction characterized by comprising

Second equipment receives the second message that the first equipment is sent, and the second message establishes session connection for terminal request, It include the mark and the continuous request of IP address of the terminal in the second message；

Second equipment sends third message to first equipment, and the third message is built for establishing the terminal request Vertical session connection includes the IP that second equipment distributes to the terminal in failure session connection in the third message Address.

7. the method as described in claim 1, which is characterized in that second equipment receives the second message that the first equipment is sent Before, the method also includes:

Second equipment is that the terminal is retained in the IP address that the terminal is distributed in the failure session connection.

8. a kind of method for message interaction characterized by comprising

Terminal sends first message to the first equipment, and the first message establishes session connection for the terminal request, described It include the mark and the continuous request of IP address of the terminal in first message；

The terminal receives the 4th message that first equipment is sent, and the 4th message is built for establishing the terminal request Vertical session connection includes IP that the second equipment distributes to the terminal in failure session connection in the 4th message Location.

9. method according to claim 8, which is characterized in that

First equipment is SGSN, and second equipment is GGSN；Alternatively,

First equipment is MME, and second equipment is PGW；Alternatively,

First equipment is AMF, and second equipment is SMF.

10. method according to claim 8, which is characterized in that

The first message is PDP context activation request message, and the 4th message is context activation received message；Or Person,

The first message is Attach Request message, and the 4th message is attachment received message；Alternatively,

The first message is that request message is established in PDN connection, and the 4th message is that PDN connection replies message；Alternatively,

The first message is PDU session establishment request message, and the 4th message is PDU session establishment received message.

11. a kind of first equipment characterized by comprising receiving unit, transmission unit, processing unit, wherein

The receiving unit, for receiving the first message of terminal transmission, the first message is established for the terminal request Session connection includes the mark and the continuous request of IP address of the terminal in the first message；

The processing unit, for generating second message, the second message establishes session connection for the terminal request, institute State the mark and the continuous request of the IP address in second message including the terminal；

The transmission unit, described in being sent to the second equipment in failure session connection being the terminal distribution IP address Second message；

The receiving unit is also used to receive the third message that second equipment is sent, and the third message is for establishing institute The session connection of terminal request foundation is stated, includes that second equipment is divided in the failure session connection in the third message The IP address of terminal described in dispensing；

The processing unit, is also used to generate the 4th message, and the 4th message is used to establish the meeting that the terminal request is established Words connect, with distributing to the IP of the terminal in the 4th message in the failure session connection including second equipment Location；

The transmission unit is also used to send the 4th message to the terminal.

12. the first equipment as claimed in claim 11, which is characterized in that described is the terminal point in failure session connection The second equipment with IP address is by the processing unit is according to the mark of the terminal and the failure session connection is corresponding connects Access point title determines；

Wherein, the corresponding access point name of the failure session connection carries in the first message, alternatively, the failure meeting Words connect corresponding access point name and are selected by the processing unit.

13. such as described in any item first equipment of claim 11-12, which is characterized in that

The processing unit is also used in the first mapping table, according to the mark of the terminal and the failure session connection pair The access point name answered, determining is the second equipment of the terminal distribution IP address in the failure session connection；

Wherein, first mapping table includes: at least one terminal iidentification, at least one described terminal iidentification is corresponding connects Corresponding second equipment of access point title, described access point title；

In the first mapping table storage third equipment, alternatively, in the first equipment being stored in the failure session connection.

14. such as described in any item first equipment of claim 11-13, which is characterized in that

First equipment is SGSN, and second equipment is GGSN；Alternatively,

First equipment is MME, and second equipment is PGW；Alternatively,

First equipment is AMF, and second equipment is SMF.

15. such as described in any item first equipment of claim 11-13, which is characterized in that

The first message is PDP context activation request message, and the second message is that PDP Context establishes request message, The third message is that PDP Context foundation replies message, and the 4th message is context activation received message；Alternatively,

The first message is Attach Request message, and the second message is session establishment request message, and the third message is Session establishment replies message, and the 4th message is attachment received message；Alternatively,

The first message is that request message is established in PDN connection, and the second message is session establishment request message, the third Message replies message for session establishment, and the 4th message is that PDN connection replies message；Alternatively,

The first message is PDU session establishment request message, and the second message is PDU session establishment request message, described Third message is that PDU session establishment replies message, and the 4th message is PDU session establishment received message.

16. a kind of second equipment characterized by comprising receiving unit, transmission unit, processing unit, wherein

The receiving unit, for receiving the second message of the first equipment transmission, the second message is established for terminal request Session connection includes the mark and the continuous request of IP address of the terminal in the second message；

The processing unit, for generating third message, the third message is used to establish the session that the terminal request is established It connects, includes the IP address that second equipment distributes to the terminal in failure session connection in the third message；

The transmission unit, for sending the third message to first equipment.

17. the second equipment as claimed in claim 16, which is characterized in that the processing unit is also used to as terminal guarantor Stay in the IP address that the terminal is distributed in the failure session connection.

18. a kind of terminal characterized by comprising receiving unit, transmission unit, processing unit, in which:

The processing unit, for generating first message, the first message establishes session connection for the terminal request, institute State the mark and the continuous request of IP address in first message including the terminal；

The transmission unit, for sending the first message to the first equipment；

The receiving unit, the 4th message sent for receiving first equipment, the 4th message are described for establishing The session connection that terminal request is established includes that the second equipment distributes to the end in failure session connection in the 4th message The IP address at end.

19. terminal as claimed in claim 18, which is characterized in that

First equipment is SGSN, and second equipment is GGSN；Alternatively,

First equipment is MME, and second equipment is PGW；Alternatively,

First equipment is AMF, and second equipment is SMF.

20. terminal as claimed in claim 18, which is characterized in that

The first message is PDP context activation request message, and the 4th message is context activation received message；Or Person,

The first message is Attach Request message, and the 4th message is attachment received message；Alternatively,

The first message is that request message is established in PDN connection, and the 4th message is that PDN connection replies message；Alternatively,

The first message is PDU session establishment request message, and the 4th message is PDU session establishment received message.

21. a kind of communication system, which is characterized in that including the first equipment and the second equipment, wherein

First equipment is described in any item first equipment of claim 11-15；

Second equipment is described in any item first equipment of claim 16-17.