CN110519808A

CN110519808A - The method, apparatus and system of interaction between a kind of network

Info

Publication number: CN110519808A
Application number: CN201810491504.6A
Authority: CN
Inventors: 柯小婉
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-05-21
Filing date: 2018-05-21
Publication date: 2019-11-29
Anticipated expiration: 2038-05-21
Also published as: CN110519808B

Abstract

The embodiment of the invention discloses the method, apparatus and system of interaction between a kind of network, are related to field of communication technology, are able to solve the problem of how handling the session in 5G network and 3G network.The specific scheme is that obtaining the first information, the information of first information intercorrelation between first network and the second network；According to the first information, the access operation of the second network of access is determined.The embodiment of the present invention is applied between network in the scene of interaction.

Description

The method, apparatus and system of interaction between a kind of network

Technical field

The present embodiments relate to the method, apparatus and system of interaction between field of communication technology more particularly to a kind of network.

Background technique

In the existing communications field, the 5th third-generation mobile communication technology (5G) network and 3rd generation mobile communication technology (3G) It does not support to interoperate between network.5G network disposes initial stage, it may be possible to hot spot covering.In order to keep the continuity of voice, work as terminal When removing 5G network, voice can be switched to the domain 3G network circuit switching (Circuit Switching, CS).For how The problem of handling protocol Data Unit (Protocol Data Unit, PDU) session of other non-voices in 5G network, at present There is no a solutions.Also, after voice, if terminal returns to 5G network, to 3G network packet switch How session is handled in the domain (Packet Switching, PS), also not clear.

Summary of the invention

The embodiment of the present invention provides the method, apparatus and system of interaction between a kind of network, to solve how to handle 5G network The problem of with session in 3G network.

In order to solve the above-mentioned technical problem, the embodiment of the present invention adopts the following technical scheme that

The embodiment of the present invention in a first aspect, between a kind of network is provided interaction method, be applied to terminal, handed between the network Mutual method may include: the acquisition first information, the information of first information intercorrelation between first network and the second network； According to the first information, the access operation of the second network of access is determined.

The second aspect of the embodiment of the present invention provides a kind of method of interaction between network, is applied to the first network element, the network Between the method for interaction may include: acquisition or determine the first information, which hands between first network and the second network Mutual information；Send the first information.

The third aspect of the embodiment of the present invention provides a kind of method of interaction between network, is applied to the second network element, the network Between interaction method may include: the acquisition first information, first information intercorrelation between first network and the second network Information；According to the first information, determine that Dialog processing operates.

The fourth aspect of the embodiment of the present invention provides a kind of terminal, which may include: to obtain module and determining mould Block.Wherein, module, for obtaining the first information, first information intercorrelation between first network and the second network are obtained Information.Determining module, the first information for obtaining according to module is obtained, determines the access operation of the second network of access.

In one implementation, the first information includes at least one of the following: that interaction is between first network and the second network Instruction information, the terminal of no support are transferred to relevant information, access way the instruction information, session of the second network from first network It indicates information, obtain context type information and switching type information.

In one implementation, the instruction information whether supported of interaction includes below extremely between first network and the second network One item missing: whether support from first network to the operation of the second network, whether support operation from the second network to first network, Whether support to switch between first network and the second network, whether support first network and the second inter network packet exchange PS to circuit Whether exchange CS switching supports between first network and the second network PS switching, whether supports first network and second internetwork Whether context obtain, first network and the second internetwork Internet protocol IP address supported to keep, and whether supports the One network and the forwarding of the second inter-network data；Terminal from the relevant information that first network is transferred to the second network include it is following at least One: terminal is switched to the relevant information of the second network from first network, terminal is cut from first network to the second network PS to CS Relevant information, the terminal that relevant information, the terminal changed switch from first network to the second network PS are redirected from first network Relevant information, the terminal of the second network are returned after first network voice service to relevant information, the terminal of the second network Context be transmitted to the relevant information of the second network from first network and terminal from first network is moved to the second network Relevant information；Access way instruction information include at least one of the following: whether be initially accessed and whether location updating；Session instruction Information includes at least one of the following: whether rebuild session and whether rebuild PS resource.

In one implementation, access operation includes any one of following: access way relevant operation behaviour related to session Make；Access way relevant operation includes any one of following: being initially accessed relevant operation and non-initial access relevant operation.

In one implementation, determining module, specifically for determining in the case where the first information meets first condition The operation of the second network is accessed to be initially accessed relevant operation；First condition, which includes at least one of the following:, does not support first network And it second interaction between network, do not support from first network to the operation of the second network, support from the second network to first network Operation, access way instruction information be designated as be initially accessed or non-location update, session instruction information instruction rebuild session or Non- reconstruction PS resource does not support first network to the second network switching, first network is not supported to switch to the second network PS, do not prop up Hold the second network from first network obtain terminal contexts relevant operation, do not support the second network from first network obtain move Property managing context, and IP address is kept when not supporting first network to the second network transitions.

In one implementation, determining module, specifically for determining in the case where the first information meets second condition The operation for accessing the second network is non-initial access relevant operation；Second condition includes at least one of the following: support first network And it second interaction between network, supports from first network to the operation of the second network, support behaviour from the second network to first network Make, access way instruction information is designated as non-initial access or location updating, session instruction information indicate non-reconstruction session or again It builds PS resource, first network is supported to switch to the second network switching, support first network to the second network PS, support the second network The relevant operation of terminal contexts is obtained from first network, the second network is supported to obtain mobile management or more from first network Text, and IP address is kept when supporting first network to the second network transitions.

In one implementation, be initially accessed relevant operation include at least one of the following: initiate in the second network it is attached Request, initiate in the second network registration request and request type be initially accessed, deletion terminal it is upper in first network Hereafter, session context of the terminal in first network is deleted, and establishes session in the second network re-request；It is non-initial to connect Enter relevant operation and includes at least one of the following: that launch position updates request, initiates routing in the second network in the second network Area updates request, initiates registration request and request type in the second network for mobile register update, by terminal in first network In context mapping be context in the second network, and the PS resource in the second network request active session.

5th aspect of the embodiment of the present invention, provides a kind of network element, which is the first network element, which can wrap It includes: obtaining module and sending module.Wherein, module is obtained, for obtaining or determining the first information, which is the first net The information of interaction between network and the second network.Sending module, for sending the first information for obtaining module and obtaining or determining.

6th aspect of the embodiment of the present invention, provides a kind of network element, which is the second network element, which can wrap It includes: obtaining module and determining module.Wherein, module is obtained, for obtaining the first information, which is first network and the The information of intercorrelation between two networks.Determining module, the first information for obtaining according to module is obtained determine that Dialog processing is grasped Make.

In one implementation, the instruction information whether supported of interaction includes below extremely between first network and the second network One item missing: whether support from first network to the operation of the second network, whether support operation from the second network to first network, Whether support to switch between first network and the second network, whether support first network and the second inter network packet exchange PS to circuit Whether exchange CS switching supports between first network and the second network PS switching, whether supports first network and second internetwork Whether context obtain, first network and the second internetwork Internet protocol IP address supported to keep, and whether supports the One network and the forwarding of the second inter-network data；Terminal from the relevant information that first network is transferred to the second network include it is following at least One: terminal is switched to the relevant information of the second network from first network, terminal is cut from first network to the second network PS to CS Relevant information, the terminal that relevant information, the terminal changed switch from first network to the second network PS are redirected from first network Relevant information, the terminal of the second network are returned after first network voice service to relevant information, the terminal of the second network Context be transmitted to the relevant information of the second network from first network and terminal from first network is moved to the second network Relevant information；It obtains context type information and includes at least one of the following: whether obtain session context, whether obtain mobility Managing context, and whether obtain non-voice session context；Switching type information includes at least one of the following: whether initiate Whether switching initiates PS switching, whether initiates PS to CS switching, and whether initiating PS switching when initiating PS to CS switching.

In one implementation, Dialog processing operation includes any one of following: whether PS switching relevant operation and whether Obtain context-sensitive operation；Whether whether PS switching relevant operation includes any one of following: whether initiating PS switching, initiating Whether include session context when initiating PS switching when PS to CS switches, preparing PS to CS switching, whether separate voice and non-language Whether the session of sound sends session context, and whether ignores session context in switching request；Whether context phase is obtained It includes any one of following for closing operation: whether initiate to obtain context request, whether respond obtain context request, whether the meeting of return Whether whether words context refused to obtain the request of session context, initiate to obtain the request of mobile management context, Yi Jishi It is no to be returned only to mobile management context.

In one implementation, determining module, specifically for executing in the case where the first information meets first condition Non- PS switching relevant operation and/or the context-sensitive operation of non-acquisition；Alternatively, the case where the first information meets second condition Under, it executes PS switching relevant operation and/or obtains context-sensitive operation.

In one implementation, first condition, which includes at least one of the following:, does not support between first network and the second network Interaction does not support PS operation between first network and the second network, does not support that IP address is kept, no between the second network and first network It supports from first network to the operation of the second network, support from first network to the PS of the second network operation, do not support from the Two networks to first network operation, do not support the PS from the second network to first network to operate, do not support from the second network to Session is rebuild in PS operation, the session instruction information instruction of first network or non-reconstruction PS resource, the instruction of switching type information are not sent out Rise PS switching or indicate initiate PS to CS switching when do not initiate PS switching, obtain context type information indicate do not obtain session Context, and obtain MM Context and/or do not obtain non-voice session context；Second condition include with down toward One item missing: it supports interaction between first network and the second network, supports PS operation between first network and the second network, do not support second IP address keeps, supports from first network to the operation of the second network, supports from first network to the between network and first network The PS operation of two networks supports the PS of operation, support from the second network to first network from the second network to first network to grasp Make, session instruction information indicates non-reconstruction session or rebuilds PS resource, PS switching is initiated in the instruction of switching type information or is indicated Initiation PS switching, acquisition context type information instruction obtain session context, acquisition non-voice meeting when initiating PS to CS switching Talk about context.

In one implementation, PS switches relevant operation and includes at least one of the following: initiation PS switching, arrives in initiation PS Include session context, transmission session context, and separation voice when initiation PS switching, preparation PS to CS switching when CS switches With the protocol Data Unit PDU session of non-voice；Non- PS switching relevant operation include at least one of the following: do not initiate PS switching, Session context is not included when not initiating PS switching request in initiation PS to CS switching, preparing PS to CS switching, preparation PS is arrived When CS switches not comprising non-voice session context, do not execute the session of separation voice and non-voice, and ignore switching request In session context.

In one implementation, if the second network element is the wireless access network element of first network, the related behaviour of PS switching Whether it includes session context that work includes: when preparing PS to CS switching；If the second network element is the core network element of first network, Whether PS switching relevant operation includes any one of following: to the internetwork interactive network element of the second network or first network and second PS switching request is initiated, and whether sends session context；If the second network element is interaction network element, PS switches relevant operation packet Include any one of following: whether separate voice and non-voice session, whether to the second network initiate PS switching request, whether to Second network element initiates to initiate PS switching when PS to CS switching, and whether ignores the session in the switching request that first network is sent Context.

In one implementation, it obtains context-sensitive operation and includes at least one of the following: that initiation obtains context and asks It asks, respond acquisition context request, and return to session context；The context-sensitive operation of non-acquisition includes following at least one : it does not initiate to obtain context request, refusal acquisition context request, does not return to session context, do not return to non-voice session Context initiates to obtain mobile management context request, returns to mobile management context, and being returned only to the relevant session of voice Context.

In one implementation, if the second network element is the wireless access network element of the second network, whether obtain up and down Literary relevant operation includes any one of following: whether to first network or interaction network element initiation acquisition context request, and whether Queued session context when initiating to obtain context request to the internetwork interactive network element of first network or first network and second； If the second network element is the core network element of the second network, it includes any one of following for whether obtaining context-sensitive operation: whether To the second network or interaction network element return session context, whether to the second network or interaction network element return non-voice session above and below Whether whether text to the second network or interaction network element is returned only to mobile management context, and to the second network or interaction network element It is returned only to voice conversation related context；If the second network element is interactive network element, if it includes following for obtaining context-sensitive operation Any one: whether separate the session context of voice and non-voice, whether to the second network return to session context, whether to the Whether two networks return to non-voice session context, whether to the second network are returned only to mobile management context, and to second Network is returned only to voice conversation related context.

7th aspect of the embodiment of the present invention, provides a kind of terminal, which includes processor, memory and be stored in On reservoir and the computer program that can run on a processor, the computer program realize above-mentioned first party when being executed by processor Between network in face the step of the method for interaction.

The eighth aspect of the embodiment of the present invention provides a kind of network element, which is the first network element, which includes place The computer program managing device, memory and storage on a memory and can running on a processor, the computer program are processed Device realizes the step of method interacted between the network in above-mentioned second aspect when executing.

9th aspect of the embodiment of the present invention, provides a kind of network element, which is the second network element, which includes place The computer program managing device, memory and storage on a memory and can running on a processor, the computer program are processed Device realizes the step of method interacted between the network in the above-mentioned third aspect when executing.

Tenth aspect of the embodiment of the present invention, provides a kind of communication system, which includes in above-mentioned fourth aspect Terminal, the 5th aspect in network element and the 6th aspect in network element.

On the one hand the tenth of the embodiment of the present invention, provides a kind of computer readable storage medium, the computer-readable storage Computer program is stored on medium, the computer program realized when being executed by processor above-mentioned first aspect, second aspect or Between network in the third aspect the step of method of interaction.

In embodiments of the present invention, terminal can (first information be first network and second according to the first information of acquisition The information of intercorrelation between network), determine access the second network access operation, such as decide whether be initially accessed and whether PS Resource is rebuild.Avoid terminal unnecessary context mapping when being moved between 3G and 5G network, repeatedly location updating be rejected with And the reconstruction of PS resource is rejected process, to reduce the unnecessary expense of terminal and access the time delay of network, improves the experience of user. Also, the second network element can determine that Dialog processing operates, according to the first information of acquisition to decide whether to switch in PS to CS PS switching whether is initiated in journey, whether is prepared as the expense that non-voice session prepares radio resource, reduces network side.

12nd aspect of the embodiment of the present invention, provides a kind of method of interaction between network, is applied to terminal, between the network Interactive method may include: to determine whether to meet predetermined condition；If meeting predetermined condition, target information is sent, the target Information includes the information of intercorrelation between first network and the second network.

13rd aspect of the embodiment of the present invention, provides a kind of method of interaction between network, is applied to network element, between the network Interactive method may include: acquisition target information, which includes intercorrelation between first network and the second network Information；According to target information, it is confirmed whether through the interaction between the second network between interaction network element execution first network.

The fourteenth aspect of the embodiment of the present invention provides a kind of terminal, which may include: determining module and transmission mould Block.Wherein it is determined that module, is used to determine whether to meet predetermined condition.Sending module is used for if it is determined that module determines that satisfaction is predetermined Condition then sends target information, which includes the information of intercorrelation between first network and the second network.

In one implementation, target information includes at least one of the following: whether terminal from first network is moved to Instruction information, the terminal of two networks whether be switched to from first network the circuit-switched CS domain in the second network instruction information, Whether by first network and the second internetwork interactive network element obtain context of the terminal in first network, first network and The index information of the index information of interaction network element and first network network element between second network.

In one implementation, predetermined condition includes at least one of the following: that terminal is moved to the second net from first network Network, terminal switch from first network to the second network PS to CS, knows and supports interaction first network and the second network, knows the The index information of interaction network element between one network and the second network, and know between first network and the second network through interaction network element Interaction.

15th aspect of the embodiment of the present invention, provides a kind of network element, which may include: to obtain module and processing mould Block.Wherein, module is obtained, for obtaining target information, which includes intercorrelation between first network and the second network Information.Processing module, the target information for obtaining according to module is obtained are confirmed whether to execute the first net by interaction network element The interaction between the second network between network.

In one implementation, module is obtained, is specifically used for receiving terminal, first network network element, first network core Network element or first network and the second internetwork target information for interacting network element transmission.

In one implementation, target information includes at least one of the following: whether terminal from first network is moved to Whether instruction information, the terminal of two networks switch from first network to the second network PS to CS, whether passes through first network and the Interaction network element between context, first network and the second network of the two internetwork interactive network elements acquisition terminals in first network The index information of index information and first network network element.

In one implementation, processing module, specifically for executing in the case where target information meets first condition The relevant operation interacted between first network and the second network is executed by interaction network element；First condition includes at least one of the following: Target information instruction terminal is moved to the second network, target information instruction terminal from first network to the second network from first network PS to CS switching, target information refer to comprising the index information of interaction network element and target information between first network and the second network Show the interaction that first network and the second network are realized by interaction network element.

In one implementation, the relevant operation interacted between first network and the second network is executed by interaction network element, It includes at least one of the following: index interaction network element, send context request to interaction network element, and send first to interaction network element The index information of network element.

In one implementation, processing module, specifically for executing in the case where target information meets second condition The relevant operation of context of the terminal in first network is directly obtained to first network；Second condition includes following at least one : target information instruction terminal be not the second network is moved to from first network, target information instruction terminal is not from the first net Network switches to the second network PS to CS, target information does not include the index information that network element is interacted between first network and the second network, And target information instruction is not executed by interactive network member and is interacted between first network and the second network.

16th aspect of the embodiment of the present invention, provides a kind of terminal, which includes processor, memory and be stored in On memory and the computer program that can run on a processor, the computer program realize the above-mentioned tenth when being executed by processor Between network in two aspects the step of the method for interaction.

17th aspect of the embodiment of the present invention, provides a kind of network element, which includes processor, memory and be stored in On memory and the computer program that can run on a processor, the computer program realize the above-mentioned tenth when being executed by processor Between network in three aspects the step of the method for interaction.

18th aspect of the embodiment of the present invention, provides a kind of communication system, which includes above-mentioned tenth four directions The network element in terminal and the 15th aspect in face.

19th aspect of the embodiment of the present invention, provides a kind of computer readable storage medium, the computer-readable storage Computer program is stored on medium, which realizes above-mentioned 12nd aspect or the tenth tripartite when being executed by processor Between network in face the step of the method for interaction.

In embodiments of the present invention, terminal can send target letter to network element in the case where determination meets predetermined condition It ceases (information that target information includes intercorrelation between first network and the second network), network element can be believed according to the target of acquisition Breath, be confirmed whether by interaction network element execute first network between the second network interaction, to avoid SGSN AMF entity without Method identification should be by interaction network element, to request the interaction network element to the context of source network acquisition terminal, according further to end The information addressing source node that end provides is come the problem of obtaining context.

Detailed description of the invention

Fig. 1 is one of the schematic diagram of method of interaction between a kind of network provided in an embodiment of the present invention；

Fig. 2 is two of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Fig. 3 is three of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Fig. 4 is four of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Fig. 5 is five of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Fig. 6 is six of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Fig. 7 is seven of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Fig. 8 is eight of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Fig. 9 is nine of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Figure 10 is ten of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Figure 11 is 11 of the schematic diagram of the method for interaction between a kind of network provided in an embodiment of the present invention；

Figure 12 is a kind of one of structural schematic diagram of terminal provided in an embodiment of the present invention；

Figure 13 is a kind of one of structural schematic diagram of network element provided in an embodiment of the present invention；

Figure 14 is a kind of second structural representation of network element provided in an embodiment of the present invention；

Figure 15 is a kind of second structural representation of terminal provided in an embodiment of the present invention；

Figure 16 is a kind of third structural representation of network element provided in an embodiment of the present invention；

Figure 17 is a kind of hardware schematic of terminal provided in an embodiment of the present invention；

Figure 18 is a kind of hardware schematic of network element provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall within the protection scope of the present invention.

Term " first " and " second " in the specification and claims of the embodiment of the present invention etc. are for distinguishing not Same object, rather than it is used for the particular order of description object.For example, first network and the second network etc. are for distinguishing difference Network, rather than for describing the particular order of network.It is unless otherwise indicated, " more in the description of the embodiment of the present invention It is a " meaning refer to two or more.

The terms "and/or" is a kind of incidence relation for describing affiliated partner, indicates may exist three kinds of relationships, For example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.Symbol herein "/" indicates that affiliated partner is relationship such as A/B expression A or B perhaps.

" illustrative " or " such as " etc. words for indicate make example, illustration or explanation.It is retouched in the embodiment of the present invention State for " illustrative " or " such as " any embodiment or design scheme be not necessarily to be construed as than other embodiments or design Scheme is more preferably or more advantage.Specifically, use " illustrative " or " such as " etc. words be intended to present in specific ways Related notion.

Below between some concepts involved in the method, apparatus and system of interaction network provided in an embodiment of the present invention And/or term does and illustrates.

Voice service: it can refer to the internet protocol multimedia system (Internet by network PS field conversational mode Protocol Multimedia Subsystem, IMS) voice service.The instruction whether voice service is supported may include following At least one of: IMS voice service supports instruction, supports instruction (IMS by the IMS voice service of network PS field conversational mode Voice over PS Session Supported Indication), referred to by the IMS voice service in the domain network C S support Show, and accesses IMS voice service (the IMS Voice over PS Session of network PS field conversational mode by 3GPP Supported Indication over3GPP) etc..

It should be noted that voice service may include urgency traffic, i.e. urgency traffic one kind for being voice service.Its In, urgency traffic may include emergency-voice services and urgent internet protocol multimedia system (Internet Protocol Multimedia Subsystem, IMS) voice service etc..The instruction whether urgency traffic is supported may include following at least one : urgency traffic supports instruction (Emergency Services Support indicator) and urgency traffic retract to support to refer to Show (Emergency Services Fallback) etc..

It redirects (Redirection): can refer to the connection of wireless access network release terminal and network and indicate to redirect The mode of frequency point.

PS to CS switching is properly termed as but is not limited to any one of following between first network and the second network: first network to PS to CS switching, SRVCC, PS to CS SRVCC switching, first network between second network C S switching, first network and the second network SRVCC, first network to the second network SRVCC, first network SRVCC switch, PS to CS switches, first network to the second network PS to CS switching, first network to the second networks support both voice business continuance, first network are wirelessly supported to the second network list Voice business continuity and first network retract etc. to the second network.Normal structure it is used other names without limitation on The present invention.

First network is properly termed as to the switching of the second network operation but is not limited to any one of following: first network and the second net Network interoperability and first network return back to second network etc..

From 5G network to 3G network PS to CS, switching is properly termed as but is not limited to any one of following: from 5G network to 3G network PS to CS switching, SRVCC, PS to CS SRVCC switching, 5G SRVCC, 5G to 3G between CS switching, 5G network and 3G network SRVCC 5G SRVCC switching, the switching of the domain PS to CS, 5G network to 3G network PS to CS switches, 5G network to 3G network supports language Sound business continuity, 5G network to 3G network retract, 5G network to 3G network operates, 5G network and 3G network interoperate.Standard Tissue uses other names without limitation on the present invention it.

Existing 3G network includes the domain CS and ps domain, and the two domains are mutually indepedent.However, working as 5G network and the domain 3G network CS When supporting the interoperability of terminal, 5G network and 3G network ps domain also not necessarily support the interoperability of terminal.

Therefore, can there is a problem of following 1, problem 2, problem 3 and problem 4.

Problem 1: when terminal removes the 5G network coverage, 3G network is switched to by 5G network PS to CS, voice is related Session can keep the continuity of voice service.Session relevant to non-voice, if support PS switching not clear.Due to Interaction is realized between core net between net, and source wireless access network is when the source for preparing switching is to target transparent transmission container and unclear Whether Chu needs to separate the session of non-voice, then target radio access network may the non-language of redundancy preparation when preparing radio resource The radio resource of sound session mapping.When interaction is realized by interactive network element between net, the Internet also it is not clear whether Initiate PS switching.If 5G network is not supported to switch to 3G network PS, after terminal accesses 3G network, whether terminal can be rebuild PS resource is also unclear.After voice service, when terminal returns to 5G network.It is also unclear that whether terminal, which can rebuild PS resource, Chu.The mapping for needing terminal to carry out context due to rebuilding PS resource is also needed to send out if rebuilding PS resource by network refusal It rises and rebuilds PS session, will so increase the expense of terminal and increase the time delay that terminal restores transmission data.Terminal is not at present Understand the configuration of network.And the network configuration of different operators may be different.

Problem 2 is when terminal PS to CS is switched to 3G network, if switched without PS, terminal should be sent out in 3G network ps domain Play the PS resource that session has been established in Routing Area Update request activation.In order to initiate Routing Area Update, terminal needs to carry out 5G or more Mapping between text and 3G context.But if 5G network is not supported to interoperate with 3G network ps domain, position is initiated in terminal After setting update, then network side can not obtain the context before terminal, then it can refuse the Routing Area Update of terminal.Terminal needs Registration request is re-initiated, the expense of terminal will be so increased and increases the time delay of access network.

Problem 3: PS switching or PS resource are rebuild between net supports IP address to keep when needing to shift between network.IP address is protected It holds and requires IP gateway constant.The session gateway of 3G network ps domain is GGSN or PGW, and the session subscriber veil pass of 5G network is UPF, Session control face is SMF.It is set by PGW-C and SMF conjunction, PGW-U and UPF conjunction are set, and can keep the IP address of terminal.But GGSN Whether can be closed respectively with SMF and UPF set it is not clear.When support transmitting terminal contexts between 3G network ps domain and 5G network But when 3G network ps domain and 5G network do not support to keep IP address, obtaining the session context of terminal or initiating PS switching does not just have Value.Currently, terminal does not know internetwork structure, need to map session context, when initiating PS resource active, network meeting Refuse terminal PS resource active.Terminal needs to rebuild PS session, will so increase opening for terminal to access 3G network ps domain Pin and the time delay for increasing access network.

1 to problem 3 to solve the above-mentioned problems, and the embodiment of the present invention provides a kind of method of interaction between network, and terminal can Using the first information (information of first information intercorrelation between first network and the second network) according to acquisition, access the is determined The access operation of two networks, for example, decide whether be initially accessed and whether PS resource rebuild.Avoid terminal between 3G and 5G network Unnecessary context mapping when mobile, location updating is rejected repeatedly and PS resource active is rejected process, to reduce The time delay of the unnecessary expense of terminal and access network, improves the experience of user.Also, the second network element can be according to the first of acquisition Information, determine Dialog processing operate, with decide whether to initiate in PS to CS handoff procedure PS switching, whether be prepared as it is non- The expense that voice conversation prepares radio resource, reduces network side.

Interaction can be between problem 4:5G network and the net of 4G network is realized by an interactive network element.When terminal location more When newly arriving 3G network ps domain, service universal grouping wireless serving GPRS support node (the Serving General Packet of 3G network Radio Service Support Node, SGSN) can not identify it is interaction network element by between 5G network and 3G network, To request the interaction network element to the context of 5G network acquisition terminal, source node is addressed according further to the information that terminal provides to obtain Take context.Conversely, when updating of terminal position is to 5G network, the access of 5G network and mobile management function (Access and Mobility Management Function, AMF) entity can not identify be by interaction network element, to request the interaction Network element obtains the context of terminal to 5G network, addresses source node according further to the information that terminal provides to obtain context.

To solve the above-mentioned problems 4, the embodiment of the present invention provides a kind of method of interaction between network, and terminal can be in determination In the case where meeting predetermined condition, sending target information to network element, (target information includes interaction between first network and the second network Relevant information), network element can be confirmed whether to execute by interaction network element between first network and the according to the target information of acquisition Interaction between two networks can not identify it is by interaction network element, to request the interaction network element to avoid SGSN AMF entity The context that terminal is obtained to source network addresses source node according further to the information that terminal provides come the problem of obtaining context.

In order to support first network (such as 5G network) to the operation of the second network (such as 3G network), offer of the embodiment of the present invention Following framework.

Framework one, first network network element support first interface to be connected with the second network element.

Wherein, above-mentioned first interface can be a new interface and either reuse between the second network and third network Interface, i.e., by reuse first interface on existing protocol definition so that first network network element (the AMF entity of such as 5G network) and Second network element (mobile switching centre (Mobile Switching Center, MSC) of such as 3G network) is based on first interface (such as Sv interface) communication, can be to avoid the change to the second network.

Framework two supports first network and the second internetwork interaction by an interactive network element.Wherein, the interactive network Member can be the network unit belonged to lower network: first network, the second network, third network.Interaction network element can be used as the One network of network agency is communicated with the second network.Interaction network element can be used as the agency of the second network and first network carries out Communication.

In a kind of embodiment, interaction network element be can be in addition to the third mesh network between first network and the second network Member.In order to facilitate understanding and describe, here be 5G network with first network, the second network is 3G network, and third network is 4G Illustratively illustrated for network.Interaction network element can be 4G network element, such as MME (such as mobility management entity (Mobility Management Entity, MME)).On the one hand 4G network element is supported to interoperate with 3G network, on the other hand Also the interoperability with 5G network is supported.It is logical by N26 interface between 5G network element (such as AMF) and 4G network element (such as MME) Letter；4G network element 3G network CS domain network element (such as MSC, MSC Server) can pass through Sv interface communication；4G network element with 3G network ps domain network element (such as SGSN) can pass through S3 interface communication.So 4G network can be used as 3G network agency and 5G net Network is communicated；The agency that 4G network can be used as 5G network communicates with 3G network.

Since 3G network has been a stable network, and the meeting of session (such as PDU session) and 3G network of 5G network Words (PDP Context) differ greatly, and directly influence of the interoperability of support 5G to 3G to 3G network and 5G network is too big.So By framework two, can to avoid or minimize influence to 3G network.

In a kind of embodiment, first network can show as the network that deployment is hot spot covering, such as the 5G of primary stage Network；It is all standing that second network, which can show as deployment, and supports the network of voice service, such as 3G network；Third network can Think 4G network；Terminal can be mobile phone, tablet computer (Tablet Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal digital assistant, abbreviation PDA), mobile Internet access dress Set (Mobile Internet Device, MID) or wearable device (Wearable Device) etc..

In a kind of embodiment, first network and the second network can show as the network that any two support interoperability； In another embodiment, first network and the second network can show as the network that any two do not support interoperability, the Three networks can show as any support and interoperate with first network, and support the network with the second network interoperability, specifically It can determine according to actual needs, the embodiment of the present invention is not construed as limiting this.

5G network can include but is not limited at least one of following: 5G core net, is connected to 5GC's at 5G wireless access network EUTRA is connected to NR, NR, NG RAN, 5GC, N3GPP of 5GC etc.；The network unit of 5G network may include but be not limited to It is at least one of lower: AMF, SMF, UPF, PCF, UDM, gNB, the eNB for being connected to AMF etc..

3G network can include but is not limited at least one of following: 3G core net, 3G wireless access network, CDMA, 3GPP21x, UTRAN, HSPA, GPRS, UTRA, RNS, BSS, GPRS, UMTS, HLR etc..The network unit of 3G network may include But it is not limited at least one of following: MSC, MSC Server, MGW, SGSN, GGSN, RNC, NodeB etc..3G network CS refers to 3G The circuit commutative field of network, the network unit for the 3G network that at least one may include but be not limited to: 3GPP2 1x, UTRAN, HSPA, MSC, MSCServer, MGW etc..

4G network can include but is not limited at least one of following: 4G core net, is connected to EPC's at 4G wireless access network EUTRA, EPC, EUTRAN, LTE, EPS etc..The network unit of 4G network may include but be not limited at least one of following: MME, SGW, PGW, HSS, eNB etc..

In a kind of embodiment, the context of terminal includes mobile management context and session context.In 3G network, meeting Words can be PDP, and (packet data protocol (Packet Data Protocol) context, in 5G network, session can be PDU (protocol Data Unit (Protocol Data Unit, PDU)) session.In 5G network, session can be PDN connection.

In the present invention " support " it can be appreciated that " can ", " can with " or " feasible ".The specific word present invention does not limit System.If the practical word that normal structure uses nor affects on the embodiment of the present invention.

In the present invention, in 3G network, session can be PDP Context；Session establishment or reconstruction can show as initiating PDP context activation request process.In 5G network, session can be PDU session；Session establishment or reconstruction can show as sending out It plays PDU session context and establishes request process.In 4G network, session can be PDN connection；Session establishment or reconstruction can be with tables Now request process is established to initiate PDN connection.Rebuild session PS resource be referred to as active session user face connection or Activate the PS resource of already-existing session.

The method, apparatus and system of interaction, can be applied to above-mentioned communication system between network provided in an embodiment of the present invention In system.With reference to the accompanying drawing, by specific embodiment and its application scenarios between interaction network provided in an embodiment of the present invention Method, equipment and system be described in detail.

As shown in Figure 1, the embodiment of the present invention provides a kind of method of interaction between network, it is applied to terminal, is handed between the network Mutual method may include following step 101 and step 102.

Step 101 obtains the first information, the information of first information intercorrelation between first network and the second network.

Wherein, obtain can be understood as obtaining from configuration, receives obtain, by request be followed by harvesting either basis connects It is obtained after the information processing of receipts, specifically can determine according to actual needs, the embodiment of the present invention is not construed as limiting this.

In a kind of embodiment, first network or the second network may include at least one: the domain CS, ps domain.The domain CS It can refer to the circuit commutative field of network；Ps domain can be network packet switching domain.For example 4G network or 5G network can be wrapped only Containing ps domain.For example 3G network may include the domain CS and ps domain.The domain CS of 3G network may include at least one of following: MSC, MSC Server, Media Gateway (Media Gateway, MGW) etc..The ps domain of 3G network may include at least one of following: SGSN, GGSN, SGW, PGW etc..

In a kind of embodiment, first network is 5G network and the second network is 3G network.In another embodiment, First network is 3G network and the second network is 5G network.

Optionally, the first information may include at least one of following:

Between first network and the second network interaction whether support instruction information,

Terminal be transferred to from first network the second network relevant information,

Access way instruction information,

Session instruction information,

Acquisition context type information,

Switching type information.

Specifically, the instruction information that whether interaction is supported between first network and the second network may include following at least one :

Whether support from first network to the operation of the second network,

Whether support operation from the second network to first network,

Whether support between first network and the second network switching,

Whether support between first network and the second network PS to CS switching,

Whether support between first network and the second network PS switching,

Whether support between first network and the second network context to obtain,

Whether support between first network and the second network IP address to keep,

First network and the second inter-network data is whether supported to forward.

In a kind of embodiment, interaction may include at least one between first network and the second network: first network To the operation of second network, the operation of the second network to the first network.In another embodiment, first network and Interaction may include at least one between second network: the PS of first network and second network operation (can be such as Fig. 3 reality Apply described in example, details are not described herein again), the CS operation (such as PS to CS switching) of first network and second network.

In a kind of embodiment, the first network to second network operation may include at least one: One network switches to second network switching, first network to the second network PS, first network to second network PS to CS switching, the second network obtain relevant operation, the first network to second network of terminal contexts from first network IP address is kept when transfer, first network is forwarded to second network data.In a kind of embodiment, second network is arrived First network operation may include at least one: the second network switches to the first network, the second network to institute State first network PS switching, the second network switch to first network PS to the CS, the second network to first network about terminal IP address holding when shifting of relevant operation that context obtains, the second network to the first network, the second network to described the The forwarding of one network data.

It can be appreciated that first network and the second internetwork Cross support can be it is unidirectional.For example it can only support 5G Network does not support 3G network to the switching of 5G network to the switching of 3G network.First network and the second internetwork Cross support It can be some domain.For example 5G network can only be supported to switch (such as SRVCC) to PS to the CS of 3G network, do not support 3G network Switch to 5G network PS.

Further, if support context acquisition may include: whether to support to obtain between first network and the second network Whether whether MM Context is supported to obtain session context, and support to obtain non-voice session context.

Specifically, terminal may include at least one of following from the relevant information that first network is transferred to the second network:

Terminal be switched to from first network the second network relevant information,

Relevant information that terminal switches from first network to the second network PS to CS,

Relevant information that terminal switches from first network to the second network PS,

Terminal be redirected to from first network the second network relevant information,

Terminal returned after first network voice service the second network relevant information,

The context of terminal be transmitted to from first network the second network relevant information,

Terminal is moved to the relevant information of the second network from first network.

It can be appreciated that when first network and the second network do not support PS to switch, when terminal is switched to from first network Behind the domain CS of two networks, terminal accesses ps domain, access way and terminal idle state if necessary and moves into second from first network The mode of network PS field can be with analogy.In a kind of embodiment, when terminal knows that first network is only supported with the second network When PS to CS switches and current switching is switching of the first network to the second domain network C S, terminal can determine its access second The mode of network PS field.In a kind of embodiment, when not supporting context to obtain between first network and the second network, terminal is connect Entering the second network can be using the relevant operation being initially accessed.In another embodiment, when between first network and the second network When context being supported to obtain, terminal, which accesses the second network, can use the relevant operation of non-initial access.It can be appreciated that terminal connects Enter the second network, the second network is supported to obtain the context of terminal from first network, terminal can be kept originally in first network Registration context, without being initially accessed again.Otherwise, do not support the second network above and below first network acquisition terminal Text, terminal needs the relevant operation for initiating to be initially accessed, for example reregisters with the second network.

Specifically, access way instruction information may include at least one of following: whether be initially accessed and whether position more Newly.In a kind of embodiment, location updating belongs to non-initial access.In a kind of embodiment, access way indicates that information can be with Information is indicated to access the access way of the second network.

Specifically, session instruction information may include at least one of following: whether rebuilding session and whether rebuilds PS resource. In a kind of embodiment, if rebuilding session may include whether to rebuild PS resource and rebuild session context.A kind of embodiment party In formula, when support obtains terminal contexts (including session context) and/or support IP address between first network and the second network When holding, terminal can rebuild session PS resource under the second network, not need the context for establishing session.Otherwise, when It does not support to obtain terminal contexts between first network and the second network, terminal can rebuild session under the second network, for example send out Play the foundation of session context.In another embodiment, when not supporting IP address to keep between first network and the second network, Terminal can be rebuild under the second network can be also.It can be appreciated that even if the second network can obtain the session of first network or more Text, but IP address is not able to maintain, and still to initiate to rebuild.

In 5G network, session is properly termed as PDU session.In 3G network, session is properly termed as PDP Context.In 4G In network, session is properly termed as PDN connection.In a kind of embodiment, session indicates that information can access the second network for terminal Session indicate information, than such as whether in the session of the second network reconnection first network or whether in second the first net of network reconnection The PS resource of network session.

Specifically, it may include at least one of following for obtaining context type information: whether obtain session context, whether MM Context is obtained, and whether obtains non-voice session context.

Specifically, switching type information may include at least one of following: whether initiate switching, whether initiate PS switching, PS to CS switching whether is initiated, and whether initiates PS switching when initiating PS to CS switching.

Step 102, according to the first information determines the access operation of the second network of access.

Optionally, access operation may include any one of following: access way relevant operation, session relevant operation.

Optionally, access way relevant operation may include any one of following: being initially accessed relevant operation and non-initial connects Enter relevant operation.In a kind of embodiment, the relevant operation of non-initial access includes the relevant operation of location updating.

In 3G network, initial access, which can be, initiates GPRS attach request.In 4G network, initial access can be hair Play attach request.In 5G network, it is initially accessed and can be the registration request for initiating that request type is initial access.In 3G network In, location updating, which can be, initiates Routing Area Update request.In 4G network, location updating can be initiating updating of tracking area and ask It asks.In 5G network, location updating can be the registration request for initiating that request type is mobile register update.

It can be appreciated that terminal can initiate the phase of non-initial access when the second network can obtain the context of terminal Close operation.When the second network can not obtain the context of terminal, the relevant operation that terminal initiates non-initial access can occur Failure.

In a kind of embodiment, in the case where the first information meets first condition, terminal determines the second network of access Operation is initial access relevant operation.

Optionally, first condition may include at least one of following:

Do not support between first network and the second network interaction,

Do not support from first network to the operation of the second network,

Do not support operation from the second network to first network,

Access way instruction information be designated as be initially accessed or non-location update,

Session indicate information instruction rebuild session or non-reconstruction PS resource,

Do not support first network to the second network switching,

Do not support first network to switch to the second network PS,

Do not support the second network from first network obtain terminal contexts relevant operation,

IP address is kept when not supporting first network to the second network transitions.

In another embodiment, in the case where the first information meets second condition, terminal determines the second net of access The operation of network is non-initial access relevant operation.

Optionally, second condition may include at least one of following:

Interactive between support first network and the second network,

Support from first network to the operation of the second network,

Support operation from the second network to first network,

Access way instruction information be designated as it is non-initial access or location updating,

Session indicate information indicate non-reconstructions session or reconstruction PS resource,

Support first network to the second network switching,

Support first network to switch to the second network PS,

Support the second network from first network obtain terminal contexts relevant operation,

IP address is kept when supporting first network to the second network transitions.

Specifically, it may include at least one of following for being initially accessed relevant operation:

In the second network initiate attach request,

Initiate in the second network registration request and request type be initially accessed,

Delete context of the terminal in first network,

Session context of the terminal in first network is deleted,

And session is established in the second network re-request.

In a kind of embodiment, non-initial access relevant operation may include location updating relevant operation.

Specifically, non-initial access relevant operation may include at least one of following:

In the second network launch position update request,

In the second network initiate Routing Area Update request,

Initiate in the second network registration request and request type be mobile register update,

It is the context in the second network by context mapping of the terminal in first network,

And the PS resource in the second network request active session.

Specifically, session relevant operation may include at least one of following: the PS resource rebuild session, rebuild session.

A kind of embodiment is that terminal moves into the second network from first network, can rebuild in the second network and have meeting The PS resource of words.Since voice service has been switched to the second domain network C S, the session of the reconstruction can be non-voice correlation Session.Terminal can delete the relevant session of voice.

In a kind of embodiment, in the case where the first information meets non-reconstruction PS resource correlated condition, terminal is determined not Request rebuilds the PS resource of session or initiates to rebuild session.In 3G network, rebuilding session can show as initiating PDP Context Activate request process.In 5G network, reconstruction session can show as initiation PDU session context and establish request process.In 4G In network, reconstruction session can show as initiation PDN connection and establish request process.The PS resource for rebuilding session is referred to as swashing The user face connection of session living.

Optionally, the relevant condition of non-reconstruction PS resource may include at least one of following:

First condition,

Do not support the second network from first network obtain obtain session context (such as non-voice session context),

It should be noted that session relevant operation and access way are relatively independent processes.When terminal progress is non-initial When relevant operation (such as location updating) of access way, terminal not necessarily conversates, and (PS as rebuild session is provided for relevant operation Source).Such as when not supporting to obtain session context or do not support IP address to keep, terminal can not request to rebuild the PS of session Resource.Because not being able to maintain lacking session context or IP address, the PS resource for rebuilding session be will fail.When support obtains It mobile management context but does not support to obtain session context or when not supporting IP address to keep, terminal can request location updating But do not request to rebuild the PS resource of session.Because mobile management context can make location updating success.

In another embodiment, in the case where the first information meets and rebuilds PS resource correlated condition, terminal is determined The PS resource of session is rebuild in request.

Optionally, it may include at least one of following for rebuilding PS resource correlated condition:

Second condition,

Support the second network from first network obtain obtain session context (such as non-voice session context),

In a kind of embodiment, the PS resource that the second network request rebuilds session be can be in the position that first network is initiated Update the mark of instruction request active session in request.Such as in Routing Area Update request corresponding PDP Context mark Bit indication has upstream data transmission.Such as the upstream data state in the registration request that request type is mobile register update Corresponding PDU session identification bit instruction have upstream data transmission.

In a kind of embodiment, after it is non-initial access relevant operation that terminal check, which accesses the second network, Ke Yixiang Second network sends target information.The target information is as described in Example 6, and details are not described herein again,

It can be appreciated that 1) the relevant session of voice can be switched to the second net by first network (such as 5G network) PS to CS Network (such as 3G network) can keep the continuity of voice service.Session relevant to non-voice, if not supporting first network to arrive Second network PS switching, after terminal accesses the second network (such as 3G network), terminal may determine whether to rebuild session or reconstruction PS resource.Or 2) the relevant session of voice can be switched to first network (such as by the second network (such as 5G network) PS to CS 3G network) continuity of voice service can be kept.Session relevant to non-voice, if not supporting first network to the second net Network PS switching, after terminal speech service ending returns to the second network (such as 5G network), terminal may determine whether to rebuild session Or rebuild PS resource.

When terminal access the second network, can according to whether supported between first network and the second network obtain terminal contexts When, decide whether to initiate to be initially accessed.When not supporting to obtain terminal contexts between first network and the second network, terminal can be with It initiates to be initially accessed.It, can be whole according to whether supporting to obtain between first network and the second network after terminal accesses the second network When the context of end and/or when whether IP address being supported to keep, decide whether that initiating PS resource rebuilds.When first network and the second net When supporting to obtain terminal contexts between network and IP address is supported to keep, terminal can initiate the reconstruction of PS resource.When first network and When not supporting to obtain terminal contexts or do not support IP address to keep between the second network, terminal initiates session rebuilding.

Through this embodiment, it can solve how terminal accesses network and the relevant session of non-voice processing.

As shown in Fig. 2, the embodiment of the present invention provides a kind of method of interaction between network, it is applied to the first network element, the network Between interaction method may include following step 201 and step 202.

Step 201 obtains or determines the first information, the letter of first information interaction between first network and the second network Breath.

Wherein, obtain can be understood as obtaining from configuration, receives obtain, by request be followed by harvesting either basis connects It is obtained after the information processing of receipts, specifically can determine according to actual needs, the embodiment of the present invention is not construed as limiting this.A kind of embodiment party In formula, first network or the second network may include at least one: the domain CS, ps domain.The domain CS can refer to the circuit of network Switching domain；Ps domain can be network packet switching domain.For example 4G network or 5G network can only include ps domain.For example 3G network can To include the domain CS and ps domain.The domain CS of 3G network may include at least one of following: MSC, MSC server, Media Gateway (Media Gateway, MGW) etc..The ps domain of 3G network may include at least one of following: SGSN, GGSN, SGW, PGW etc..

Optionally, the first network element can be one of the following: wireless access network element, core network element, AMF, SGSN.It is a kind of In embodiment, first network is the network element of first network.

In a kind of embodiment, the first network element can obtain the first information in handoff procedure or context acquisition process. In handoff procedure, when the first network element target core network element, the first information can be received from source core network element；When first When network element is target radio access network network element, the first information can be received from the wireless network element in source or target core network element.In It obtains in context procedures, when the first network element is new core network element, the first letter can be received from old core network element Breath.When the first network element is new wireless access network element, can be received from old wireless network element or new core network element The first information.In another embodiment, the first network element is in handoff procedure or context acquisition process sends the first information.In In handoff procedure, when the first network element is the source core network element of switching, the first information can be sent to target core network element； When the first network element is source wireless access network element, the first letter can be sent from the wireless network element of target source or source core network element Breath.In obtaining context procedures, when the first network element is old core network element, the can be sent to new core network element One information.It, can be to new wireless network element or old core network element when the first network element is old wireless access network element Send the first information.It can be appreciated that the first information can be transmitted inside first network when terminal is when first network is mobile. When needing to initiate to the second network operation, operated further according to the first information.

Optionally, the first information may include at least one of following: whether interaction is supported between first network and the second network Instruction information, terminal from first network be transferred to the second network relevant information, access way instruction information, session instruction letter Breath obtains context type information and switching type information.

Specifically, the instruction information that whether interaction is supported between first network and the second network can be such as Fig. 3 embodiment first Described in the instruction information that whether interaction is supported between network and the second network, details are not described herein again.

Specifically, terminal can be if Fig. 3 embodiment terminal is from from the relevant information that first network is transferred to the second network Described in relevant information of one network transitions to the second network, details are not described herein again.

Specifically, access way instruction information can be no longer superfluous herein as described in Fig. 3 embodiment access way indicates information It states.

Specifically, session instruction information can be as described in Fig. 3 embodiment session indicates information, and details are not described herein again.

Specifically, obtaining context type information can be as described in Fig. 3 embodiment obtains context type information, herein not It repeats again.

Specifically, switching type information can be as described in Fig. 3 embodiment switching type information, and details are not described herein again.

Step 202 sends the first information.

Optionally, the first information is sent to first object end.First object end includes at least one: terminal, first Network element, first network wireless access network element, first network core network element, the second network element, the second network wireless connect Enter the interaction network element between network element, the second network core network element, first network and the second network.

It can be appreciated that the relevant session of voice can be switched to the second network by first network PS to CS can keep language The continuity of sound business.Session relevant to non-voice needs according to whether supporting first network and the second network PS switch to determine It is fixed whether to initiate PS switching.

If not supporting to initiate PS switching:

After terminal accesses the second network, whether the second network can be according to supporting to obtain between first network and the second network Terminal contexts decide whether to initiate context request.

When terminal access the second network after, can according to whether supported between first network and the second network obtain terminal above and below Wen Shi decides whether to initiate to be initially accessed.When not supporting to obtain terminal contexts between first network and the second network, terminal can To initiate to be initially accessed.

When terminal access the second network after, can according to whether supported between first network and the second network obtain terminal above and below When literary and/or when whether IP address being supported to keep, decide whether that initiating PS resource rebuilds.It is propped up when between first network and the second network It holds when obtaining terminal contexts and IP address is supported to keep, terminal can initiate the reconstruction of PS resource.When first network and the second net When not supporting to obtain terminal contexts or do not support IP address to keep between network, terminal initiates session rebuilding.

As shown in figure 3, the embodiment of the present invention provides a kind of method of interaction between network, it is applied to the second network element, the network Between interaction method may include following step 301 and step 302.

Step 301 obtains the first information, the information of first information intercorrelation between first network and the second network.

Optionally, the second network element may include any one of following: first network wireless access network element (such as NG RAN), Interaction network element and the second net between first network core network element (such as AMF or SGSN), first network and the second network Network core network element (such as SGSN or AMF).

Step 302, according to the first information determines that Dialog processing operates.

In a kind of embodiment, Dialog processing operation can be the processing operation to the relevant session of non-voice.

It can be appreciated that 1) the relevant session of voice can be switched to the second net by first network (such as 5G network) PS to CS Network (such as 3G network) can keep the continuity of voice service.Session relevant to non-voice, if not supporting first network to arrive Second network PS switching, after terminal accesses the second network (such as 3G network), the second network element be may determine whether from first network It obtains the upper and lower of terminal and/or rebuilds PS resource.Or 2) the relevant session of voice can pass through the second network (such as 5G network) PS to CS, which is switched to first network (such as 3G network), can keep the continuity of voice service.Session relevant to non-voice, such as Fruit does not support first network to switch to the second network PS, after terminal speech service ending returns to the second network (such as 5G network), Second network element may determine whether the PS resource that is upper and lower and/or whether rebuilding session that terminal is obtained from first network.

When terminal accesses the second network, whether the second network element can be whole according to supporting to obtain between first network and the second network When holding context, decide whether the context for obtaining terminal.After terminal accesses the second network, the second network element can be according to first Whether supported between network and the second network obtain terminal contexts when and/or when whether IP address being supported to keep, decide whether weight Build the PS resource of session.When supporting to obtain terminal contexts between first network and the second network and IP address is supported to keep, the Two network elements can rebuild the PS resource of session.

Optionally, Dialog processing operation may include any one of following: whether PS switches relevant operation and obtains Hereafter relevant operation.

Specifically no PS switching relevant operation may include any one of following: whether initiating PS switching, whether initiating Whether include session context when initiating PS switching when PS to CS switches, preparing PS to CS switching, whether separate voice and non-language Whether the session of sound sends session context, whether ignores session context in switching request.In a kind of embodiment, prepare It whether include that session context can be first network wireless access network when preparing PS to CS switching when PS to CS switches, source is arrived Whether target transparent transmission container includes session context.The session context can be the relevant session context of non-voice.One In kind embodiment, if the session of separation voice and non-voice can be interactive network element in the switching request for receiving first network When, if the session of non-voice is separated to the second network and initiates PS switching request.Comprising non-in the PS switching request The context of the session of voice.In another embodiment, if ignore session context in switching request and can be and ignore The session context in switching request that received first network is sent.The session context can be the relevant meeting of non-voice Talk about context.

Specifically the no context-sensitive operation of acquisition may include any one of following: whether initiating acquisition context and ask It asks, whether responds acquisition context request, whether return to session context, whether refuse to obtain the request of session context, be The no request for initiating to obtain mobile management context, and whether it is returned only to mobile management context.Optionally, in the session The hereinafter relevant session context of non-voice.In a kind of embodiment, IP address is not supported between first network and the second network It keeps, can only request mobile management context.Terminal can be in the second network reconnection session later.

In a kind of embodiment, in the case where the first information meets and switches first condition about PS, the second network element is executed Non- PS switching relevant operation and/or the context-sensitive operation of non-acquisition.

Optionally, first condition may include at least one of following:

Do not support between first network and the second network interaction,

Do not support between first network and the second network PS operation,

Do not support between the second network and first network IP address to keep,

Do not support from first network to the operation of the second network,

Do not support from first network to the PS of the second network operation,

Do not support operation from the second network to first network,

Do not support the PS from the second network to first network to operate,

Switching type information instruction do not initiate PS switching or indicate initiate PS to CS switching when do not initiate PS switch,

The instruction of context type information is obtained not obtain session context, obtain MM Context and/or do not obtain Negated voice conversation context.

In a kind of embodiment, the PS operation of the first network to second network may include at least it is following it One: first network switches to the second network PS, the second network from first network obtain terminal contexts relevant operation, the IP address is kept when one network is to second network transitions, first network is forwarded to second network data.A kind of implementation In mode, the PS operation of second network to the first network may include at least one: the second network is described in First network PS switching, the second network to first network obtained about terminal contexts relevant operation, the second network to described in IP address holding, the second network to the first network data forwarding when first network shifts.

In another embodiment, in the case where the first information meets second condition, the second network element executes PS switching Relevant operation and/or the context-sensitive operation of acquisition.

Optionally, second condition may include at least one of following:

Interactive between support first network and the second network,

Support PS operation between first network and the second network,

Do not support between the second network and first network IP address to keep,

Support from first network to the operation of the second network,

Support from first network to the PS of the second network operation,

Support operation from the second network to first network,

Support the PS from the second network to first network to operate,

Switching type information instruction initiation PS switches or instruction initiation PS when initiating PS to CS switching switches,

The instruction of context type information is obtained to obtain session context, obtain non-voice session context.

Specifically, it may include at least one of following that PS, which switches relevant operation: initiating PS switching, is initiating PS to CS switching Shi Faqi PS switching prepares when PS to CS switches comprising session context, transmission session context, separation voice and non-voice Protocol Data Unit PDU session.

Specifically, non-PS switching relevant operation may include at least one of following: not initiating PS switching, is initiating PS to CS PS switching request is not initiated when switching, prepares not including session context when PS to CS switching, prepare not wrap when PS to CS switching Session context containing non-voice, ignores session context in switching request at the session for not executing separation voice and non-voice.

In a kind of embodiment, if the second network element is the wireless access network element of first network, PS switches relevant operation It may include: to prepare when PS to CS switches whether to include session context.

In a kind of embodiment, if the second network element is the core network element of first network, PS switches relevant operation can be with Including any one of following: whether initiating PS switching to the internetwork interactive network element of the second network or first network and second and ask It asks, and whether sends session context.

In a kind of embodiment, if the second network element is interaction network element, it may include following any that PS, which switches relevant operation, : whether separate voice and non-voice session, whether to the second network initiate PS switching request, whether to the second network element send out PS switching is initiated when playing PS to CS switching, and whether ignores the session context in the switching request that first network is sent.

Specifically, it may include at least one of following for obtaining context-sensitive operation: initiate to obtain context request, response It obtains context request, return to session context.

Specifically, the context-sensitive operation of non-acquisition may include at least one of following: do not initiate to obtain context request, Refusal obtains context request, does not return to session context, do not return to non-voice session context, initiating to obtain on mobile management It hereafter requests, return to mobile management context, and return to the relevant session context of voice.

In a kind of embodiment, if the second network element is the wireless access network element of the second network, whether context is obtained Whether relevant operation may include any one of following: initiating to obtain context request, Yi Jishi to first network or interaction network element It is no to initiate to obtain context request to the internetwork interactive network element of first network or first network and second.

In a kind of embodiment, if the second network element is the core network element of the second network, whether obtain context-sensitive Operation may include any one of following: whether to the second network or interaction network element return to session context, whether to the second network Or interaction network element return non-voice session context, whether to the second network or interaction network element be returned only to mobile management context, And whether to the second network or interaction network element be returned only to voice conversation related context.

In a kind of embodiment, if the second network element is interactive network element, if obtain context-sensitive operation may include with It is any one of lower: whether to the second network return session context, whether to the second network return non-voice session context, whether To the second network return mobile management context, and whether to the second network return voice conversation related context.A kind of reality It applies in mode, does not support IP address to keep between first network and the second network, interaction network element can be returned only to the second network and be moved Dynamic managing context does not return to session context.Terminal can be in the second network reconnection session later.

The embodiment of the present invention provides a kind of method of interaction between network, and terminal can be according to the first information (first of acquisition The information of information intercorrelation between first network and the second network), determine the access operation of the second network of access, for example determine Whether it is initially accessed and whether PS resource is rebuild.Avoid terminal unnecessary context mapping when being moved between 3G and 5G network, Location updating is rejected repeatedly and the reconstruction of PS resource is rejected process, to reduce the unnecessary expense of terminal and access network Time delay improves the experience of user.Also, the second network element can determine that Dialog processing operates, according to the first information of acquisition with certainly It is fixed whether to initiate PS switching in PS to CS handoff procedure, whether be prepared as non-voice session preparation radio resource, reduce The expense of network side.

As shown in figure 4, the embodiment of the present invention provides a kind of method of interaction between network, it is applied to terminal, is handed between the network Mutual method may include following step 401 and step 401.

Step 401 determines whether to meet predetermined condition.

Optionally, predetermined condition may include at least one of following:

Terminal from first network be moved to the second network,

Terminal switches from first network to the second network PS to CS,

Know between first network and the second network support interaction,

Know between first network and the second network interaction network element index information,

And know between first network and the second network through interaction network element interaction.

In a kind of embodiment, the information that terminal can interact between the first network received and the second network indicates to support Know in first network and the second network interaction and supports interaction between first network and the second network.

In a kind of embodiment, terminal can receive the rope of interaction network element between first network and the second network from following one Fuse breath: first network network element.

If step 402 meets predetermined condition, target information is sent, which includes first network and the second network Between intercorrelation information.

Optionally, terminal can send target information to the second target side.Second target side may include at least with It is one of lower: the second network element, the second network core network element, the second network radio access network network element, the second network PS field net Member, the second network PS field or core network element send target information.

In a kind of embodiment, first network is 5G network and the second network is 3G network.In a kind of embodiment, first Network is 5G network and the second network is 3G network ps domain.In another embodiment, first network is 3G network and second Network is 5G network.

Optionally, target information may include at least one of following:

Terminal whether from first network be moved to the second network instruction information,

Instruction information that whether terminal switches from first network to the second network PS to CS,

Whether by first network and the second internetwork interactive network element obtain context of the terminal in first network,

Between first network and the second network interaction network element index information,

The index information of first network network element.

In a kind of embodiment, terminal, which is known, to be interacted between first network and the second network by interacting network element.Then when Terminal instruction terminal is when being moved to the second network from first network, and the second network by interaction network element it is known that go to obtain The context of terminal；In other embodiments, terminal is not aware that first network and the second internetwork interactive mode, works as end Holding to the second network instruction terminal is that the second network is moved to from first network, then the second network can be according to itself configuration Decide whether to interact by interacting network element with first network with the interactive mode of first network.Such as 3G network and 5G network it Between can pass through direct interface interaction.It can be between 3G network and 5G network and to be interacted by interaction network element.

In a kind of embodiment, terminal is whether the second network is moved to from first network may include: terminal from first Network switches to the second network PS to CS.For example terminal supports the continuous of voice to 3G network PS to CS switching from 5G network Property.At this point, it is to be moved to instruction or the end of the second network from first network that terminal, which can send terminal to the ps domain of 3G network, End is the instruction switched from first network to the second network PS to CS.

In another embodiment, terminal, which is known, to be interacted between first network and the second network by interacting network element.Eventually End can more directly indicate the second network by interaction network element to realize the interaction with first network.

In another embodiment, terminal receives the index information of the interaction network element of first network transmission, by interaction network element Index information be supplied to the second network；Second network element can find interactive network element according to the index information of interaction network element.

In another embodiment, first network network element with interact between network element that there are relevances, the second network element can Interactive network element can be associated with by the index information of first network network element.Specifically, the index information of first network network element It include: the address of the mark of first network network element, first network network element.In a kind of embodiment, when terminal accesses the second network When, the index information of first network network element is presented with the format of the second network element.For example first network is 5G network, the second net Network is 3G network.First network network element can be AMF, then first network network element index information can be 5G-GUTI.Terminal can be with 5G-GUTI is mapped as to be then forwarded to the network element after RAI, P-TMSI and/or P-TMSI format.

Specifically, the target information is included in location update message by terminal, such as Routing Area Update request message Or request type is the login request message that shift position updates.In a kind of embodiment, in order to save bit, one can be passed through Bit GC group connector is location updating and instruction target information.For example the updating type in Routing Area Update request message is routing Area update and instruction terminal from first network move into the second network.Without wanting the first bit indication Routing Area Update to request, the Two bit indication terminals move into the second network from first network.Such as the request type in login request message be shift position more New and terminal moves into the second network from first network.

As shown in figure 5, the embodiment of the present invention provides a kind of method of interaction between network, it is applied to network side element, the net The method of interaction may include following step 501 and step 502 between network.

Step 501 obtains target information, which includes the letter of intercorrelation between first network and the second network Breath.

Optionally, the network side element is referred to as the network element, and the network element can be one of the following: wireless access network Network element, core network element, AMF, SGSN.In a kind of embodiment, the network is the network element of the second network.

In a kind of embodiment, the network element can obtain the first information in handoff procedure or context acquisition process. In handoff procedure, when the network element target core network element, the first information can be received from source core network element；When described When network element is target radio access network network element, the first information can be received from the wireless network element in source or target core network element.In It obtains in context procedures, when the network element is new core network element, the first letter can be received from old core network element Breath.When the network element is new wireless access network element, can be received from old wireless network element or new core network element The first information.In another embodiment, the network element is in handoff procedure or context acquisition process sends the first information.In In handoff procedure, when the network element is the source core network element of switching, the first information can be sent to target core network element； When the network element is source wireless access network element, the first letter can be sent from the wireless network element of target source or source core network element Breath.In obtaining context procedures, when the network element is old core network element, the can be sent to new core network element One information.It, can be to new wireless network element or old core network element when the network element is old wireless access network element Send the first information.It can be appreciated that the first information can be transmitted inside first network when terminal is when first network is mobile. When needing to initiate to the second network operation, operated further according to the first information.

In a kind of embodiment, the network element can receive the target information: terminal, the first net from least one Network diagram member, first network core network element, first network internetwork interact network element with second.

Step 502, according to target information, be confirmed whether to hand between the second network between executing first network by interaction network element Mutually.

Optionally, interaction includes at least one between the second network between first network: obtaining terminal in first network In context relevant operation.

Optionally, by the way that interaction includes at least one between the second network between interaction network element execution first network: logical Cross the relevant operation that interactive network element obtains context of the terminal in first network.

Optionally, target information may include at least one of following:

The index information of first network network element.

In a kind of embodiment, in the case where target information meets first condition, the network element is identified through interactive network Member carries out the interaction between the second network between first network.

Optionally, first condition may include at least one of following:

Target information instruction terminal from first network be moved to the second network,

Target information instruction terminal switches from first network to the second network PS to CS,

Target information includes the index information of interaction network element between first network and the second network,

And target information instruction realizes that the interaction of first network and the second network (for example passes through interaction by interaction network element Network element obtains context of the terminal in first network).

Optionally, the relevant operation interacted between first network and the second network is executed by interaction network element, may include with It is at least one of lower: to send context request to interaction network element and interaction network element sends the index information of first network network element.

In a kind of embodiment, interacted between first network and the second network by the interaction network element configured.The mesh Mark information instruction terminal is when being moved to the second network from first network, and the second network by interaction network element it is known that go to obtain Take the context of terminal.For example when terminal is to move into 3G network from 5G network, the context of terminal is obtained by interaction network element. When terminal is to move into 3G network from 4G network, the context of terminal can be obtained with direct index 4G network element.

In a kind of embodiment, interacted between first network and the second network by the interaction network element configured.The mesh When whether mark information instruction terminal switches from first network to the second network PS to CS, the second network is it is known that pass through interaction Network element goes to obtain the context of terminal.

In another embodiment, the target information instruction is executed between first network and the second network by interaction network element Interaction, the second network is it is known that remove the context of acquisition terminal by interaction network element.

In another embodiment, the target information includes the index information for the interaction network element that first network is sent.The Two network elements can find interactive network element according to the index information of interaction network element.

In another embodiment, first network network element with interact between network element that there are relevances, the second network element can Interactive network element is associated with the index information by first network network element.

Specifically, the index information of interaction network element includes: the address of the mark of interactive network element, interaction network element.

Specifically, the index information of first network network element includes: the ground of the mark of first network network element, first network network element Location.In a kind of embodiment, when terminal accesses the second network, the index information of first network network element is with the second network element Format is presented.For example first network is 5G network, the second network is 3G network.First network network element can be AMF, then the first net Network diagram member index information can be 5G-GUTI.5G-GUTI can be mapped as RAI, P-TMSI and/or P-TMSI format by terminal After be then forwarded to the network element.

In a kind of embodiment, in the case where target information meets second condition, network element confirmation is non-to pass through interactive network member The interaction between the second network between progress first network, for example directly context of the terminal in first network is obtained to first network Relevant operation.

Optionally, second condition may include at least one of following:

Target information instruction terminal be not be moved to from first network the second network,

Target information instruction terminal is switched from first network to the second network PS to CS,

Target information does not include the index information of interaction network element between first network and the second network,

And target information instruction is not executed by interactive network member and is interacted between first network and the second network.

Specifically, first network network element indexed according to the index information of first network network element and to indexing first network net Member sends context request.

Specifically, the index information of first network network element includes: mark (mark of such as AMF, routing of first network network element The mark in area), the address of first network network element.It, can be so to branch according to the identification information of Route Area in a kind of embodiment Hold the SGSN of the Route Area.

The embodiment of the present invention provides a kind of method of interaction between network, and terminal can determine the case where meeting predetermined condition Under, target information (information that target information includes intercorrelation between first network and the second network) is sent to network element, network element can According to the target information of acquisition, to be confirmed whether to execute the interaction between the second network between first network by interaction network element, to keep away Exempting from SGSN AMF entity can not identify it is by interaction network element, to request the interaction network element to obtain terminal to source network Context, according further to terminal provide information addressing source node come the problem of obtaining context.

Above-mentioned Fig. 1, Fig. 2 and Fig. 3 are from the angle of terminal, the first network element and the second network element, to the embodiment of the present invention respectively What the method for the inter-network operations of offer was illustratively described, below again respectively in connection with Fig. 6, Fig. 7 and Fig. 8 from terminal, One network element and the angle of the second network element interaction illustratively retouch the method for inter-network operations provided in an embodiment of the present invention It states.

Embodiment one:

Present embodiment mainly describes 5G network into the detailed process of 3G network CS switching (such as SRVCC), and how is terminal Determine the behavior of access 3G network packet-switched domain (PS).Referring to Fig. 6, as shown in Figure 6, comprising the following steps:

Step 1,5G wireless access network network unit initiate the switching of 5G network to 3G network CS.The reason of initiation may be But it is not limited to following one: receives and establish request about the QoS flow of voice service, there are voice service and removes cutting for 5G network Change event.

Step 2, the network unit of 5G wireless access network send N2 switching request message to 5G core net network unit.Scheming In 6,5G core net network unit shows as AMF, it should be understood that the present invention does not limit 5G core net network unit with this The form of expression, in other embodiments, 5G core net can also show as other forms.

The handoff request message is containing at least one of following: the first network to the second network C S operate the One relevant information；First network to the second network switching request information, instruction 5G network to 3G network CS indication message, source RNC to target RNC transparent container、CSG ID、CSG Mode、MS Class mark 2.Wherein, above-mentioned first relevant information and switching request information specifically refer to the description of the first relevant information of above-described embodiment, Details are not described herein again.

The information about terminal that the information MAP about terminal of 5G network is exported as 3G network by AMF is either direct The information about terminal of 5G network is sent to 4G network unit, is specifically referred to described in above-described embodiment.

The information about terminal that the information MAP about terminal of 5G network is exported as to 3G network, may include following At least one of: the PLMN of the last service terminal of 5G network is mapped as anchor point PLMN；The SUPI of terminal is mapped as IMSI；

According to the mapping ruler one of security information: the security information (such as KAMF) of 5G is mapped as the security information of 3G (such as CK, IK)；Or the mapping ruler two according to security information: the security information (such as KAMF) of 5G is mapped as the security information of 4G (such as KASME etc.).

Step 3, AMF send forwarding redirection request to the network unit of 4G network.

In Fig. 6, network element communication can be interacted by one between 3G network and 5G network.It should be understood that the present invention The communication mode between 3G network and 5G network is not limited with this.

Interaction network element can be a network unit either individual gateway for 4G network.The network unit of 4G network The network unit of the form of expression such as 4G network.The network unit of 4G network can show as MME, it should be understood that the present invention Not with the form of expression of this network unit for limiting 4G network, in other embodiments, the network unit of 4G network can also To show as other forms.

Step 4, MME or interaction network element send SRVCC PS to CS switching request to MSC server (Server).

Step 5, MSC Server are sent to target MSC prepares switching request.

Step 6, target MSC send switching request to 3G wireless access net unit.

Step 7,3G wireless access net unit send switching request acknowledgement message to MSC.

It include target RNC to Source RNC totransparent container in the message.

Step 8, target MSC prepare switching response message to MSC Server to transmission.It include target in the message RNC to Source RNC totransparent container。

Step 9, MSC Server send IMS conversation shift number to IMS, request IMS conversation shift to 3G network CS.

Step 10, MSC Server to MME or interact network element to transmission PS to CS switching response message.It is wrapped in the message The to Source RNC totransparent of RNC containing target container.

Information MAP in PS to the CS switching response message received is that forwarding is reset by step 11, MME or interaction network element AMF is sent to response message.

Step 12, AMF send switching command message to 5G wireless access network network unit.May include in the message with It is at least one of lower: the first information.The information first information of first information intercorrelation between first network and the second network has Body can refer to the description of the relevant information first information of first network and the second network operation in Fig. 1 above method embodiment, It for example may include following one: the second net that information that whether first network and the second network operation are supported, first network arrive The instruction information of network CS switching, target RNC to Source RNC totransparent container.

Step 13, the network unit of 5G wireless access network send RRC information to terminal.It may include in RRC information following At least one of: the first information.Wherein, the first information specifically can with reference to the description of the first information in Fig. 1 embodiment of the method, herein It repeats no more.

Terminal determines the mode of access 3G network ps domain according to the first information.It includes following for accessing the mode of 3G network ps domain One of: attachment relevant operation, location updating relevant operation.

Adhere to relevant operation as described in step 16a.

Location updating relevant operation is as described in step 16b.

Step 14, terminal access 3G wireless access network.

Step 15, terminal switch completion from 5G network to 3G network CS.It can specifically include following steps:

3G wireless access network sends handoff completion message to target MSC.

Target MSC sends handoff completion message to transmission to target MSC to MSC Server.

MSC Server to MME to send PS to CS handoff completion message.

MME by the information MAP in PS to the CS handoff completion message received be forwarding redirect complete message sending to AMF。

Step 16a, when meeting at least the following conditions, terminal executes attachment relevant operation:

When 5G network and 3G network ps domain not being supported to interoperate；

Do not support 5G network to when the operation of 3G network ps domain；

Attachment (such as indicating to initiate attach request to 3G network ps domain) is initiated in instruction；

Adhering to relevant operation may include at least one: initiation attach request (for example GPRS attachment is initiated to SGSN Request), 5G mobile management context in terminal, delete 5G session management context.

Step 16b, when meeting at least the following conditions, terminal performing location updates relevant operation:

When 5G network and 3G network PS being supported to interoperate；

When 5G network being supported to operate to 3G network PS；

Instruction updates request (such as indicating to initiate Routing Area Update request to 3G network ps domain) in launch position；

PS resource (such as request activation PDP Context in RAU request) is rebuild in instruction；

Location updating relevant operation may include: launch position update request (such as to SGSN initiate Routing Area Update ask Ask), mapping 5G terminal contexts be 3G terminal context, request activation has the PDP Context etc. of user face data.

The order of occurrence of step 15 and step 16a and step 16b are with no restrictions.

It should be noted that the related content being related in step 1- step 15 may refer to above-mentioned Fig. 1, Fig. 2 and The associated description of embodiment in Fig. 3, details are not described herein again.

Embodiment two:

Before present embodiment is specifically used for description initiation 5G network to 3G network switching, terminal was registered 5G network Journey.Referring to Fig. 7, as shown in fig. 7, comprises following steps:

Step 1, terminal send RRC information to 5G wireless access network network unit, disappear in RRC information comprising registration request Breath.

Step 2,5G wireless access network network unit send N2 interface message, N2 interface message to 5G core net network unit In include login request message.In practical applications, above-mentioned N2 interface message can specifically show as initial UE (User Equipment, user equipment, i.e. terminal) message, in Fig. 7,5G core net network unit shows as AMF, it should be understood that The present invention does not limit the form of expression of 5G core net network unit with this, and in other embodiments, 5G core net can also be with Show as other forms.

Step 3, AMF to UDM are registered.

Step 4, AMF send N2 interface message to 5G wireless access network network unit, connect in N2 interface message comprising registration By message.Optionally, above-mentioned N2 interface message can specifically show as initial UE context and establish request message or downlink NAS biography Send message.

It may include in registration received message or N2 interface message at least one of following: the first information.Wherein, the first information Specifically can with reference to the description of the first information in Fig. 1 embodiment of the method, details are not described herein again.

Step 5,5G wireless access network send RRC information to terminal, include registration received message in RRC information.Optionally, The first information is indicated in the registration received message or RRC information.

Adhere to relevant operation as described in step 7a.

Location updating relevant operation is as described in step 7b.

Step 6,5G network to 3G CS handoff procedure.5G net is not supported when 5G wireless access network receives first information instruction When network and 3G network PS are operated, when 5G wireless access network initiates 5G network to 3G CS handoff procedure, 5G network will not be initiated To 3G PS handoff procedure.

Step 7a, as described in one step 16a of embodiment, details are not described herein again.

Step 7b, as described in one step 16b of embodiment, details are not described herein again.

It should be noted that may refer to above-mentioned Fig. 1, Fig. 2 and figure to the related content being related in step 1- step 6 The associated description of embodiment in 3, details are not described herein again.

Embodiment three:

After present embodiment is specifically used for description initiation 5G network to 3G network CS switching, terminal speech service ending, eventually End returns to 5G network and determines how to access the mode of network.Referring to Fig. 8, as shown in Figure 8, comprising the following steps:

The first information that terminal obtains before determines the mode of access 3G network ps domain.Access the side of 3G network ps domain Formula includes following one: attachment relevant operation, location updating relevant operation.

Adhere to relevant operation as described in step 1a.

Location updating relevant operation is as described in step 1b.

Step 1a, when meeting at least the following conditions, terminal executes attachment relevant operation:

When 5G network and 3G network ps domain not being supported to interoperate；

When not supporting 3G network ps domain to 5G network operation；

Attachment is initiated in instruction；(as instruction is initiated to adhere in 5G network)

Instruction registration request type is to be initially accessed (if instruction is to be initially accessed in 5G network registry request type)；

Adhere to relevant operation may include at least one: initiate attach request (such as to AMF initiate registration request and Request type is to be initially accessed).

Step 1b, when meeting at least the following conditions, terminal performing location updates relevant operation:

When 5G network and 3G network PS being supported to interoperate；

When supporting 3G network PS to 5G network operation；

Indicate that launch position updates (for example initiating registration request and request type to AMF as mobile register update)；

PS resource (such as request activation PDU session context in the registration request) is rebuild in instruction；

Location updating relevant operation may include: that launch position updates request and (for example sends registration request and request to AMF Type is mobile register update), mapping 3G terminal context be 5G terminal contexts, request activates the PDU by user face data Session etc..

It should be noted that may refer to above-mentioned Fig. 1, Fig. 2 and Fig. 3 to the related content being related in embodiment three The associated description of middle embodiment, details are not described herein again.

Above-mentioned Fig. 4 and Fig. 5 is the angle from terminal and network element respectively, to inter-network operations provided in an embodiment of the present invention What method was illustratively described, below again respectively in connection with Fig. 9, Figure 10 and Figure 11 from terminal and network element interaction angle to this The method for the inter-network operations that inventive embodiments provide illustratively is described.

Embodiment four:

Present embodiment is specifically used for the process that description terminal initiates Routing Area Update request in 3G network PS.Please refer to figure 9, as shown in Figure 9, comprising the following steps:

The terminal contexts of 5G network are mapped as 3G terminal context, including following one by step 1, terminal: mark is believed Breath, security information, PDP Context information.

By 3G wireless access network, terminal is sent out to 3G core net network unit (being described below using SGSN as example) Send Routing Area Update request message.Optionally, the message may include target information.The target information such as Fig. 4 embodiment In target information described in, for example may include following one: the instruction that terminal is moved into from 5G network, terminal is from 5G network switching The instruction of 3G network CS obtains terminal contexts by agency.In a kind of embodiment, by increasing in the request type of Route Area One seed type is including the instruction information.

Step 2, SGSN receive the Routing Area Update request message of terminal transmission.Described in SGSN can be sent according to terminal Target information determines the context of the terminal by interactive network element to 5G network request.Otherwise, SGSN is asked according to Routing Area Update The core net network unit (such as AMF) of terminal iidentification relevant information Index Sources service terminal in asking.Interaction network element can be 4G The network unit (such as MME, subsequent to be described using MME as example) of network

SGSN sends context request message to MME.

Step 3, MME based on context terminal identification information (LAC, RAC, P-TMSI, the P-TMSI in request message Signature it is mapped as the identification information of AMF) to index AMF, and convert 4G network for the information in context request message The context request message of type is sent to AMF.

Step 4, AMF obtain the session context of terminal to SMF.

Step 5, AMF send session context response to MME.

The context that information in session context response is converted to 3G network type is sent to SGSN by step 6, MME. EPS bearer context etc. is also transmitted directly to SGSN.

Step 7, SGSN send session context confirmation to MME.

Step 8, MME send session context confirmation to AMF.

Step 9, SGSN send Routing Area Update to terminal and receive.

Step 10, terminal send Routing Area Update to SGSN and complete.

It should be noted that may refer in above-mentioned Fig. 4 and Fig. 5 to the related content being related in step 1- step 10 The associated description of embodiment, details are not described herein again.

Embodiment five:

Present embodiment is specifically used for the process that description terminal initiates Routing Area Update request in 3G network PS.Please refer to figure 10, as shown in Figure 10, comprising the following steps:

The terminal contexts of 3G network are mapped as 5G terminal contexts, including following one by step 1, terminal: mark is believed Breath, security information, PDU session information.

By 5G wireless access network, terminal is sent out to 5G core net network unit (being described below using AMF as example) Send registration request.Request type in login request message can be mobile registration movement.Optionally, the message may include Target information.The target information is as described in the target information in Fig. 4 embodiment, for example may include following one: terminal from The instruction that 3G network moves into, the instruction that terminal returns after 5G network switching 3G network CS obtain terminal contexts by agency. It include the instruction information by increasing by a seed type in registration request type in a kind of embodiment.

Step 2, AMF receive the login request message of terminal transmission.The target that AMF can be sent according to terminal is believed Breath determines the context for the terminal requested by interaction network element to 3G network.Otherwise, AMF is according to the registration request in Route Area The core net network unit (such as SGSN) of relevant information Index Sources service terminal.Interaction network element can be the network unit of 4G network (such as MME, subsequent to be described using MME as example)

AMF sends context request message to MME.

The terminal identification information (5G-GUTI) of step 3, MME based on context in request message is mapped as the mark of SGSN Information sends the context request message that the information in context request message is converted into 4G network type to index SGSN To SGSN.

Step 4, SGSN send session context response to MME.

The context that information in session context response is converted to 5G network type is sent to AMF by step 5, MME.

Step 6, AMF send session context confirmation to MME.

Step 7, MME send session context confirmation to SGSN.

Step 8, AMF send registration to terminal and receive.

Step 9, terminal send registration to SGSN and complete.

It should be noted that may refer in above-mentioned Fig. 4 and Fig. 5 to the related content being related in step 1- step 9 The associated description of embodiment, details are not described herein again.

Embodiment six:

Present embodiment is specifically used for the process that description terminal initiates Routing Area Update request in 3G network PS.Subsequent During obtaining terminal contexts, the process of interaction network element selection SGW.Figure 11 is please referred to, as shown in figure 11, including following step It is rapid:

Step 1 is consistent to the step 1 of step 5 and embodiment four to step 5, and details are not described herein again.

1a, context response triggering

The triggering of 1b, PS switching request

Step 6, receive AMF return context response after, MME be terminal select a SGW.MME is to the SGW to selection Send creation context request.Wherein, comprising the address of PGW-C.

Step 7, SGW send modification carrying request to PGW-C/SMF.

Step 8, PGW-C/SMF send N4 session modification process to PGW-U/UPF.

Step 9, PGW-C/SMF send modification carrying response to SGW.

Step 10, SGW send creation context response to MME.

Step 11 is consistent to the step 6 of step 13 and embodiment four to step 8, and details are not described herein again.

Step 14, SGSN are sent to SGW updates PDP Context process.

Step 15 is consistent to the step 9 of step 16 and embodiment four to step 10, and details are not described herein again.

It should be noted that may refer in above-mentioned Fig. 4 and Fig. 5 to the related content being related in step 1- step 16 The associated description of embodiment, details are not described herein again.

As shown in figure 12, the embodiment of the present invention provides a kind of terminal 1200, which includes obtaining 1201 He of module Determining module 1202.

Wherein, module 1201 is obtained, for obtaining the first information, which hands between first network and the second network The information of cross-correlation.Determining module 1202, the first information for obtaining according to module 1201 is obtained determine the second network of access Access operation.

In one possible implementation, the first information may include at least one of following: first network and the second net The interactive instruction information whether supported, terminal are from first network is transferred to the relevant information of the second network, access way refers between network Show information, session instruction information, obtain context type information and switching type information.

In one possible implementation, whether it may include at least one of following for obtaining context type information: obtaining It takes session context, whether obtain MM Context, and whether obtain non-voice session context.

In one possible implementation, switching type information may include at least one of following: whether initiate switching, Whether initiate PS switching, whether initiate PS to CS switching, and whether initiates PS switching when initiating PS to CS switching.

In one possible implementation, the instruction information whether supported of interaction can be between first network and the second network Include at least one of the following: whether support from first network to the operation of the second network, whether support from the second network to first Whether the operation of network is supported to switch between first network and the second network, whether supports that PS is arrived between first network and the second network CS switching, whether support between first network and the second network PS switching, whether support first network and second it is internetwork up and down Whether text obtains, first network and the second internetwork IP address is supported to keep, and whether supports first network and the second net Data forwarding between network；Terminal may include at least one of following from the relevant information that first network is transferred to the second network: terminal From the related letter that first network is switched to the relevant information of the second network, terminal switches from first network to the second network PS to CS Relevant information that breath, terminal switch from first network to the second network PS, terminal from first network are redirected to the second network Relevant information, terminal returned after first network voice service the relevant information of the second network, terminal context from First network is transmitted to the relevant information of the second network and terminal is moved to the relevant information of the second network from first network； Access way instruction information may include at least one of following: whether be initially accessed and whether location updating；Session indicates information It may include at least one of following: whether rebuilding session and whether rebuild PS resource.

In one possible implementation, access operation may include any one of following: access way relevant operation and Session relevant operation；Access way relevant operation may include any one of following: be initially accessed relevant operation and non-initial access Relevant operation.

In one possible implementation, determining module 1202, specifically for meeting first condition in the first information In the case of, determine that the operation of the second network of access is to be initially accessed relevant operation；First condition may include at least one of following: Interaction between first network and the second network is not supported, is not supported from first network to the operation of the second network, is not supported from second Network indicates that information is designated as being initially accessed or non-location updates, session indicates information to the operation of first network, access way Instruction rebuilds session or non-reconstruction PS resource, does not support first network to the second network switching, do not support first network to second Network PS switching does not support the second network to obtain the relevant operation of terminal contexts from first network, and does not support the first net IP address is kept when network is to the second network transitions.

In one possible implementation, determining module 1202, specifically for meeting second condition in the first information In the case of, determine that the operation of the second network of access is non-initial access relevant operation；Second condition may include following at least one : it supports interaction between first network and the second network, supports from first network to the operation of the second network, supports from the second network Indicate that information is designated as non-initial access or location updating, session instruction information instruction to the operation of first network, access way Non- reconstruction session rebuilds PS resource, supports first network to the second network switching, first network is supported to cut to the second network PS It changes, the second network is supported to obtain the relevant operation of terminal contexts from first network, and support first network to the second network IP address is kept when transfer.

In one possible implementation, it may include at least one of following for being initially accessed relevant operation: in the second net Attach request is initiated in network, initiates registration request in the second network and request type is to be initially accessed, delete terminal first The session context of context, deletion terminal in first network in network, and re-requested in the second network and establish meeting Words；Non-initial access relevant operation may include at least one of following: launch position updates request, second in the second network To initiate Routing Area Update request in network, initiate registration request and request type in the second network be mobile register update, will Context mapping of the terminal in first network is the context in the second network, and in the second network request active session PS resource.

Terminal provided in an embodiment of the present invention can be realized each process that terminal is realized in above method embodiment, to keep away Exempt to repeat, which is not described herein again.

As shown in figure 13, the embodiment of the present invention provides a kind of network element, wherein the network element can be in above method embodiment The first network element, which includes obtaining module 1301 and sending module 1302.

Wherein, module 1301 is obtained, for obtaining or determining the first information, which is first network and the second net The information of interaction between network.Sending module 1302, for sending the first information for obtaining module 1301 and obtaining or determining.

Network element provided in an embodiment of the present invention can be realized each process that the first network element is realized in above method embodiment, To avoid repeating, which is not described herein again.

As shown in figure 14, the embodiment of the present invention provides a kind of network element, wherein the network element can be in above method embodiment The second network element, which includes obtaining module 1401 and determining module 1402.

Wherein, module 1401 is obtained, for obtaining the first information, which hands between first network and the second network The information of cross-correlation.Determining module 1402, the first information for obtaining according to module 1401 is obtained determine that Dialog processing is grasped Make.

In one possible implementation, the instruction information whether supported of interaction can be between first network and the second network Include at least one of the following: whether support from first network to the operation of the second network, whether support from the second network to first Whether whether the operation of network supported to switch between first network and the second network, support to be grouped between first network and the second network Exchange PS to circuit switching (CS) switching, whether support between first network and the second network PS to switch, whether support first network and Whether whether the second internetwork context obtains, first network and the second internetwork IP address is supported to keep, and support First network and the forwarding of the second inter-network data；Terminal from the relevant information that first network is transferred to the second network may include with At least one of lower: terminal is switched to the relevant information of the second network, terminal from first network from first network to the second network PS Relevant information that relevant information, the terminal switched to CS switches from first network to the second network PS, terminal are from first network quilt It is redirected to the relevant information of the second network, terminal returns to the related of the second network after first network voice service and believes Breath, terminal context be transmitted to the relevant information of the second network from first network and terminal from first network is moved to the The relevant information of two networks；It may include at least one of following for obtaining context type information: whether obtaining session context, is No acquisition MM Context, and whether obtain non-voice session context；Switching type information may include following At least one of: switching whether is initiated, PS switching whether is initiated, whether initiates PS to CS switching, and whether is initiating PS to CS PS switching is initiated when switching.

In one possible implementation, Dialog processing operation may include any one of following: whether PS switching is related It operates and whether obtains context-sensitive operation；

Whether PS switching relevant operation may include any one of following: whether initiating PS switching, whether is initiating PS to CS PS switching is initiated when switching, prepares when PS to CS switches whether to include session context, the meeting for whether separating voice and non-voice Whether words send session context, and whether ignore session context in switching request；

It may include any one of following for whether obtaining context-sensitive operation: whether initiate to obtain context request, whether Whether whether response obtain context request, whether return to session context, refuse to obtain the request of session context, initiate to obtain The request of mobile management context is taken, and whether is returned only to mobile management context.

In one possible implementation, determining module 1402, specifically for meeting first condition in the first information In the case of, execute non-PS switching relevant operation and/or the context-sensitive operation of non-acquisition；Alternatively, meeting second in the first information In the case where condition, executes PS switching relevant operation and/or obtain context-sensitive operation.

In one possible implementation, first condition may include at least one of following: do not support first network and It is interacted between second network, does not support PS operation between first network and the second network, do not support IP between the second network and first network Address keep, do not support from first network to the operation of the second network, do not support from first network to the PS of the second network operation, Do not support the operation from the second network to first network, the PS from the second network to first network do not supported to operate, do not support from Session or non-reconstruction PS resource, switching type letter are rebuild in PS operation, the session instruction information instruction of second network to first network Breath instruction does not initiate PS switching or indicates not initiating PS switching when initiating PS to CS switching, obtains the instruction of context type information Session context is not obtained, and obtains MM Context and/or does not obtain non-voice session context；Second condition It may include at least one of following: supporting interaction between first network and the second network, support PS between first network and the second network Operation does not support that IP address is kept between the second network and first network, supports from first network to the operation of the second network, supports From first network to the PS of the second network operation, support operation from the second network to first network, support from the second network to The PS operation of first network, session instruction information indicate non-reconstruction session or rebuild PS resource, the instruction of switching type information is initiated PS switching indicates to initiate PS switching when initiating PS to CS and switching, obtains context type information instruction acquisition session or more Text obtains non-voice session context.

In one possible implementation, it may include at least one of following that PS, which switches relevant operation: initiation PS switching, Include session context when initiating PS switching, preparation PS to CS switching when initiating PS to CS and switching, send session context, with And the protocol Data Unit PDU session of separation voice and non-voice；Non- PS switching relevant operation may include at least one of following: PS is not initiated to switch, do not initiate PS switching request when initiating PS to CS switching, prepare when PS to CS switches not comprising in session Hereafter, prepare PS to CS switching when not comprising non-voice session context, do not execute separate voice and non-voice session, and Ignore the session context in switching request.

In one possible implementation, if the second network element is the wireless access network element of first network, PS switching Whether it includes session context that relevant operation may include: when preparing PS to CS switching；If the second network element is the core of first network Whether heart network element, then it may include any one of following that PS, which switches relevant operation: to the second network or first network and second Internetwork interactive network element initiates PS switching request, and whether sends session context；If the second network element is interaction network element, Whether PS switching relevant operation may include any one of following: whether separating the session of voice and non-voice, send out to the second network It plays PS switching request, whether initiating to initiate PS switching when PS to CS switches to the second network element, and whether ignore first network Session context in the switching request of transmission.

In one possible implementation, it may include at least one of following for obtaining context-sensitive operation: initiation obtains It takes context request, response to obtain context request, and returns to session context；The context-sensitive operation of non-acquisition can wrap It includes at least one of following: not initiating to obtain context request, refusal acquisition context request, do not return to session context, do not return Non-voice session context is returned, initiates to obtain mobile management context request, return to mobile management context, and is returned only to language The relevant session context of sound.

In one possible implementation, if the second network element is the wireless access network element of the second network, whether obtain It may include any one of following for taking context-sensitive operation: whether initiating acquisition context to first network or interaction network element and asks It is requested when asking, and whether initiating to the internetwork interactive network element of first network or first network and second and obtain context request Session context；If the second network element is the core network element of the second network, whether obtaining context-sensitive operation may include It is any one of following: whether to the second network or interaction network element to return to session context, whether return to the second network or interaction network element It returns non-voice session context, whether to the second network or interaction network element be returned only to mobile management context, and whether to the Two networks or interaction network element are returned only to voice conversation related context；If the second network element is interactive network element, if obtain context Whether relevant operation may include any one of following: whether separating the session context of voice and non-voice, return to the second network Session context is returned, whether to the second network non-voice session context is returned to, whether to the second network is returned only to mobile management Context, and whether to the second network it is returned only to voice conversation related context.

Network element provided in an embodiment of the present invention can be realized each process that the second network element is realized in above method embodiment, To avoid repeating, which is not described herein again.

As shown in figure 15, the embodiment of the present invention provides a kind of terminal 1500, which includes 1501 He of determining module Sending module 1502.

Wherein it is determined that module 1501, is used to determine whether to meet predetermined condition.Sending module 1502, for if it is determined that mould The determination of block 1501 meets predetermined condition, then sends target information, which may include between first network and the second network The information of intercorrelation.

In one possible implementation, target information may include at least one of following: whether terminal is from the first net Network is moved to the circuit-switched CS domain whether the instruction information of the second network, terminal are switched in the second network from first network Indicate information, whether by first network and the second internetwork interactive network element obtain context of the terminal in first network, The index information of the index information of interaction network element and first network network element between first network and the second network.

In one possible implementation, predetermined condition may include at least one of following: terminal is moved from first network It moves and switches to the second network, terminal from first network to the second network PS to CS, knows and supported first network and the second network Interaction, the index information for knowing interaction network element between first network and the second network, and know between first network and the second network Pass through interaction network element interaction.

As shown in figure 16, the embodiment of the present invention provides a kind of network element 1600, which includes obtaining 1601 He of module Processing module 1602.

Wherein, module 1601 is obtained, for obtaining target information, which may include first network and the second net The information of intercorrelation between network.Processing module 1602, the target information for obtaining according to module 1601 is obtained, is confirmed whether to lead to It crosses interactive network element and executes the interaction between the second network between first network.

In one possible implementation, module 1601 is obtained, is specifically used for receiving terminal, first network network element, the One network core network element or first network and the second internetwork target information for interacting network element transmission.

In one possible implementation, target information may include at least one of following: whether terminal is from the first net Network is moved to whether the instruction information of the second network, terminal switch from first network to the second network PS to CS, whether by the One network and the second internetwork interactive network element obtain between context, first network and the second network of the terminal in first network The index information of interaction network element and the index information of first network network element.

In one possible implementation, processing module 1602, specifically for meeting first condition in target information In the case of, it executes and the relevant operation interacted between first network and the second network is executed by interaction network element；First condition can wrap Include at least one of following: target information instruction terminal is moved to second network, target information instruction terminal from first network Switch from first network to the second network PS to CS, index of the target information comprising interaction network element first network and the second network The interaction of first network and the second network is realized in information and target information instruction by interaction network element.

In one possible implementation, related to being interacted between the second network by interacting network element execution first network Operation may include at least one of following: sending context request to interaction network element and sends first network net to interaction network element The index information of member.

In one possible implementation, processing module 1602, specifically for meeting second condition in target information In the case of, execute the relevant operation that context of the terminal in first network is directly obtained to first network；

Second condition may include at least one of following: target information instruction terminal is not to be moved to second from first network Network, target information instruction terminal be not switch from first network to the second network PS to CS, target information do not include the first net Between network and the second network interaction network element index information and target information instruction by interactive network member execute first network with Interaction between second network.

Network element provided in an embodiment of the present invention can be realized each process that network element is realized in above method embodiment, to keep away Exempt to repeat, which is not described herein again.

Figure 17 shows a kind of hardware schematics of terminal provided in an embodiment of the present invention.As shown in figure 17, the terminal 100 Including but not limited to: radio frequency unit 101, audio output unit 103, input unit 104, sensor 105, is shown network module 102 Show the components such as unit 106, user input unit 107, interface unit 108, memory 109, processor 110 and power supply 111.

It should be noted that it will be understood by those skilled in the art that terminal structure shown in Figure 17 was not constituted to end The restriction at end, terminal may include perhaps combining certain components or different portions than more or fewer components shown in Figure 17 Part arrangement.In embodiments of the present invention, terminal includes but is not limited to mobile phone, tablet computer, laptop, palm PC, vehicle Mounted terminal, wearable device and pedometer etc..

Wherein, processor 110 can be used for obtaining the first information, and the first information is between first network and the second network The information of intercorrelation；And according to the first information, the access operation of the second network of access is determined.

The embodiment of the present invention provides a kind of terminal, and terminal can (first information be the first net according to the first information of acquisition The information of intercorrelation between network and the second network), determine the access operation of the second network of access, for example decide whether to be initially accessed Whether PS resource is rebuild.Avoid terminal unnecessary context mapping, repeatedly location updating when moving between 3G and 5G network It is rejected and the reconstruction of PS resource is rejected process, to reduce the unnecessary expense of terminal and access the time delay of network, improve and use The experience at family.Also, the second network element can determine that Dialog processing operates, according to the first information of acquisition to decide whether in PS PS switching whether is initiated into CS handoff procedure, whether is prepared as non-voice session preparation radio resource, is reduced opening for network side Pin.

Alternatively, processor 110, can be used to determine whether to meet predetermined condition；If meeting predetermined condition, target is sent Information, the target information include the information of intercorrelation between first network and the second network.

The embodiment of the present invention provides a kind of terminal, and terminal can be sent out in the case where determination meets predetermined condition to network element Target information (information that target information includes intercorrelation between first network and the second network) is sent, network element can be according to acquisition Target information is confirmed whether by the interaction between the second network between interaction network element execution first network, to avoid SGSN or AMF It is by interaction network element, to request the interaction network element to the context of source network acquisition terminal, still that entity, which can not identify, The information addressing source node provided according to terminal is come the problem of obtaining context.

It should be understood that the embodiment of the present invention in, radio frequency unit 101 can be used for receiving and sending messages or communication process in, signal Send and receive, specifically, by from base station downlink data receive after, to processor 110 handle；In addition, by uplink Data are sent to base station.In general, radio frequency unit 101 includes but is not limited to antenna, at least one amplifier, transceiver, coupling Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 101 can also by wireless communication system and network and other set Standby communication.

Terminal provides wireless broadband internet by network module 102 for user and accesses, and such as user is helped to receive and dispatch electricity Sub- mail, browsing webpage and access streaming video etc..

Audio output unit 103 can be received by radio frequency unit 101 or network module 102 or in memory 109 The audio data of storage is converted into audio signal and exports to be sound.Moreover, audio output unit 103 can also provide and end The relevant audio output of specific function (for example, call signal receives sound, message sink sound etc.) that end 100 executes.Sound Frequency output unit 103 includes loudspeaker, buzzer and receiver etc..

Input unit 104 is for receiving audio or video signal.Input unit 104 may include graphics processor (Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 is in video acquisition mode Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out Reason.Treated, and picture frame may be displayed on display unit 106.Through graphics processor 1041, treated that picture frame can be deposited Storage is sent in memory 109 (or other storage mediums) or via radio frequency unit 101 or network module 102.Mike Wind 1042 can receive sound, and can be audio data by such acoustic processing.Treated audio data can be The format output that mobile communication base station can be sent to via radio frequency unit 101 is converted in the case where telephone calling model.

Terminal 100 further includes at least one sensor 105, such as optical sensor, motion sensor and other sensors. Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to ambient light Light and shade adjusts the brightness of display panel 1061, and proximity sensor can close display panel when terminal 100 is moved in one's ear 1061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (generally three axis) and add The size of speed can detect that size and the direction of gravity when static, can be used to identify terminal posture (such as horizontal/vertical screen switching, Dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；Sensor 105 can be with Including fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, hygrometer, thermometer, Infrared sensor etc., details are not described herein.

Display unit 106 is for showing information input by user or being supplied to the information of user.Display unit 106 can wrap Display panel 1061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 1061.

User input unit 107 can be used for receiving the number or character information of input, and generates and set with the user of terminal It sets and the related key signals of function control inputs.Specifically, user input unit 107 include touch panel 1071 and other Input equipment 1072.Touch panel 1071, also referred to as touch screen, collect user on it or nearby touch operation (such as User is using any suitable objects or attachment such as finger, stylus on touch panel 1071 or near touch panel 1071 Operation).Touch panel 1071 may include both touch detecting apparatus and touch controller.Wherein, touch detecting apparatus is examined The touch orientation of user is surveyed, and detects touch operation bring signal, transmits a signal to touch controller；Touch controller from Touch information is received on touch detecting apparatus, and is converted into contact coordinate, then gives processor 110, receives processor 110 The order sent simultaneously is executed.Furthermore, it is possible to using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves Realize touch panel 1071.In addition to touch panel 1071, user input unit 107 can also include other input equipments 1072. Specifically, other input equipments 1072 can include but is not limited to physical keyboard, function key (such as volume control button, switch Key etc.), trace ball, mouse, operating stick, details are not described herein.

Further, touch panel 1071 can be covered on display panel 1061, when touch panel 1071 is detected at it On or near touch operation after, send processor 110 to determine the type of touch event, be followed by subsequent processing device 110 according to touching The type for touching event provides corresponding visual output on display panel 1061.Although in Figure 17, touch panel 1071 and aobvious Show that panel 1061 is the function that outputs and inputs of realizing terminal as two independent components, but in certain embodiments, The function that outputs and inputs that touch panel 1071 and display panel 1061 can be integrated and be realized terminal, does not limit specifically herein It is fixed.

Interface unit 108 is the interface that external device (ED) is connect with terminal 100.For example, external device (ED) may include it is wired or Wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, memory card port, For connecting port, the port audio input/output (I/O), video i/o port, ear port of the device with identification module Etc..Interface unit 108 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and will One or more elements that the input received is transferred in terminal 100 or can be used for terminal 100 and external device (ED) it Between transmit data.

Memory 109 can be used for storing software program and various data.Memory 109 can mainly include storing program area The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as Audio data, phone directory etc.) etc..In addition, memory 109 may include high-speed random access memory, it can also include non-easy The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.

Processor 110 is the control centre of terminal, using the various pieces of various interfaces and the entire terminal of connection, is led to It crosses operation or executes the software program and/or module being stored in memory 109, and call and be stored in memory 109 Data execute the various functions and processing data of terminal, to carry out integral monitoring to terminal.Processor 110 may include one Or multiple processing units；Preferably, processor 110 can integrate application processor and modem processor, wherein application processing The main processing operation system of device, user interface and application program etc., modem processor mainly handles wireless communication.It can manage Solution, above-mentioned modem processor can not also be integrated into processor 110.

Terminal 100 can also include the power supply 111 (such as battery) powered to all parts, it is preferred that power supply 111 can be with It is logically contiguous by power-supply management system and processor 110, thus by power-supply management system realize management charging, electric discharge, with And the functions such as power managed.

In addition, terminal 100 includes some unshowned functional modules, details are not described herein.

Preferably, the embodiment of the present invention also provides a kind of terminal, including processor 110 as shown in figure 17, memory 109, it is stored in the computer program that can be run on memory 109 and on the processor 110, the computer program is processed Each process of above method embodiment is realized when device 110 executes, and can reach identical technical effect, to avoid repeating, this In repeat no more.

The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium Calculation machine program, realizes each process of above method embodiment when which is executed by processor, and can reach identical Technical effect, to avoid repeating, which is not described herein again.Wherein, the computer readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk Deng.

Figure 18 shows a kind of hardware schematic of network element provided in an embodiment of the present invention, wherein the network element can be upper State the first network element, the second network element and the network element in embodiment of the method.As shown in figure 18, which includes but is not limited to: at least One processor 131, memory 132, user interface 133 and at least one network interface 134.Various components in network element 130 It is coupled by bus system 135.

It should be noted that it will be understood by those skilled in the art that the structure of network element shown in Figure 18 is not constituted pair The restriction of network element, network element may include perhaps combining certain components or different than more or fewer components shown in Figure 18 Component layout.

Wherein, at least one processor 131 can be used for obtaining or determining that the first information, the first information are the first net The information of interaction between network and the second network；And send the first information.

Alternatively, at least one processor 131, can be used for obtaining the first information, which is first network and the The information of intercorrelation between two networks；And according to the first information, determine that Dialog processing operates.

Alternatively, at least one processor 131, can be used for obtaining target information, the target information include first network and The information of intercorrelation between second network；And according to target information, be confirmed whether by interaction network element execute first network between and Interaction between second network.

It is understood that bus system 135 is for realizing the connection communication between these components.Bus system 135 is removed It further include power bus, control bus and status signal bus in addition except data/address bus.But for the sake of clear explanation, Various buses are all designated as bus system 135 in Figure 18.

Wherein, user interface 133 may include display, keyboard or pointing device (for example, mouse, trace ball, sense of touch Plate or touch screen) etc..

It is understood that the memory 132 in the embodiment of the present invention can be volatile memory or non-volatile deposit Reservoir, or may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be ROM, programmable Read memory (Programmable ROM, PROM), Erasable Programmable Read Only Memory EPROM (Erasable PROM, EPROM), Electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.Volatile memory can be RAM is used as External Cache.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static Random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic Random access memory (Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links dynamic random access memory (Synch link DRAM, SLDRAM) and direct memory it is total Line random access memory (Direct Rambus RAM, DRRAM).The memory 132 of description of the embodiment of the present invention is intended to include But it is not limited to the memory of these and any other suitable type.

In some embodiments, memory 132 stores following element, executable modules or data structures, or Their subset of person or their superset: operating system 1321 and application program 1322.

Wherein, operating system 1321 include various system programs, such as ccf layer, core library layer, driving layer etc., are used for Realize various basic businesses and the hardware based task of processing.Application program 1322 includes various application programs, such as media Player, browser etc., for realizing various applied business.Realize that the program of present invention method may be embodied in application In program 1322.

In the embodiment of the present invention, network element 130 can also include being stored on memory 132 and can transporting on processor 131 The step of capable computer program, which realizes method provided in an embodiment of the present invention when being executed by processor 131.

The method that the embodiments of the present invention disclose can be applied in processor 131, or be realized by processor 131. Processor 131 may be a kind of IC chip, the processing capacity with signal.During realization, the above method it is each Step can be completed by the integrated logic circuit of the hardware in processor 131 or the instruction of software form.Above-mentioned processing Device 131 can be general processor, digital signal processor (Digital Signal Processor, DSP), dedicated integrated electricity Road (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic, Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general Processor can be microprocessor or the processor is also possible to any conventional processor etc..In conjunction with institute of the embodiment of the present invention The step of disclosed method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware in decoding processor And software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only In the computer readable storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The meter Calculation machine readable storage medium storing program for executing is located at memory 132, and processor 131 reads the information in memory 132, completes in conjunction with its hardware The step of stating method.Specifically, it is stored with computer program on the computer readable storage medium, computer program is by processor 131 realize each step such as embodiment of the method provided in an embodiment of the present invention when executing.

It is understood that the embodiment of the present invention description these embodiments can with hardware, software, firmware, middleware, Microcode or combinations thereof is realized.For hardware realization, processing unit be may be implemented in one or more ASIC, DSP, digital signal Processing equipment (DSP Device, DSPD), programmable logic device (Programmable Logic Device, PLD), FPGA, General processor, controller, microcontroller, microprocessor, other electronic units for executing function of the present invention or its In combination.

For software implementations, can by execute the embodiment of the present invention described in function module (such as process, function etc.) come Realize technology described in the embodiment of the present invention.Software code is storable in memory and is executed by processor.Memory can With portion realizes in the processor or outside the processor.

Optionally, the embodiment of the present invention also provides a kind of network element, including processor 131 as shown in figure 18, memory 132, it is stored in the computer program that can be run on memory 132 and on the processor 131, which is located It manages when device 131 executes and realizes each process of above method embodiment, and identical technical effect can be reached, to avoid repeating, Which is not described herein again.

The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on the computer readable storage medium Calculation machine program realizes each mistake of above method embodiment when the computer program is executed by processor 131 as shown in figure 18 Journey, and identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, the computer-readable storage medium Matter, such as ROM, RAM, magnetic or disk.

It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do There is also other identical elements in the process, method of element, article or device.

Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art The part contributed out can be embodied in the form of software products, which is stored in a storage medium In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.

The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much Form belongs within protection of the invention.

Claims

1. a kind of method of interaction between network, is applied to terminal, which is characterized in that the described method includes:

Obtain the first information, the information of first information intercorrelation between first network and the second network；

According to the first information, the access operation for accessing second network is determined.

2. the method according to claim 1, wherein the first information includes at least one of the following: described The interactive instruction information whether supported, the terminal are transferred to described from the first network between one network and second network The relevant information of second network, session instruction information, obtains context type information, and switching at access way instruction information Type information.

3. according to the method described in claim 2, it is characterized in that, between the first network and second network interaction whether The instruction information of support includes at least one of the following: whether support from the first network to the operation of second network, be Whether the no operation supported from second network to the first network is supported to switch first network and the second network, is The no support first network and the second inter network packet exchange PS switch to circuit switching (CS), whether support first network And second switching of PS between network, the first network and the second internetwork context whether is supported to obtain, whether support The first network and the second internetwork Internet protocol IP address are kept, and whether support first network and second Inter-network data forwarding；

The terminal includes at least one of the following: the end from the relevant information that the first network is transferred to second network It holds from the first network and is switched to the relevant information of second network, the terminal from the first network to described second The related letter that relevant information, the terminal of network PS to CS switching switch from the first network to the second network PS It ceases, the relevant information that the terminal is redirected to second network from the first network, the terminal are described first The context of relevant information, the terminal that second network is returned after voice-over-net service ending is passed from the first network The relevant information and the terminal that are delivered to second network are moved to the correlation of second network from the first network Information；

Access way instruction information include at least one of the following: whether be initially accessed and whether location updating；

Session instruction information includes at least one of the following: whether rebuild session and whether rebuild PS resource.

4. according to the method in any one of claims 1 to 3, which is characterized in that the access operation includes following any : access way relevant operation and session relevant operation；

The access way relevant operation includes any one of following: being initially accessed relevant operation and non-initial access relevant operation； And/or

The session relevant operation relevant operation includes any one of following: rebuilding session and rebuilds the PS resource of session.

5. according to the method described in claim 4, it is characterized in that, described according to the first information, access described the is determined The access way relevant operation and/or session relevant operation of two networks, comprising:

In the case where the first information meets first condition, determine that the operation for accessing second network initially connects to be described Enter relevant operation；

The first condition, which includes at least one of the following:, not to be supported interaction between the first network and second network, does not prop up It holds from the first network to the operation of second network, support behaviour from second network to the first network Make, the access way instruction information be designated as be initially accessed or non-location update, session instruction information instruction rebuild session or Non- reconstruction PS resource does not support the first network to second network switching, does not support the first network to described Two network PS switching does not support second network to obtain the relevant operation of terminal contexts from the first network, do not support Second network obtains MM Context from first network, and the first network is not supported to turn to second network IP address is kept when shifting；And/or

In the case where the first information meets non-reconstruction PS resource correlated condition, terminal determines the PS resource for not requesting to rebuild session Or it initiates to rebuild session；

The relevant condition of the non-reconstruction PS resource include at least one of the following: the first condition, do not support the second network from First network obtain terminal contexts relevant operation, do not support the second network from first network obtain obtain session context, IP address is kept when not supporting first network to the second network transitions.

6. according to the method described in claim 4, it is characterized in that, described according to the first information, access described the is determined The access way relevant operation and/or session relevant operation of two networks, comprising:

In the case where the first information meets second condition, determine that the operation for accessing second network is described non-initial Access relevant operation；

The second condition include at least one of the following: support interaction between the first network and second network, support from The first network to second network operation, support operation from second network to the first network, described Access way instruction information is designated as non-initial access or location updating, session instruction information indicate non-reconstruction session or again PS resource is built, supports the first network to second network switching, support the first network to the second network PS Switch, second network is supported to obtain the relevant operation of terminal contexts from the first network, support the second network from the One network obtains MM Context, and IP address guarantor when the first network being supported to arrive second network transitions It holds；And/or

In the case where the first information meets and rebuilds PS resource correlated condition, determine that the PS resource of session is rebuild in request；

The relevant condition of the non-reconstruction PS resource includes at least one of the following: second condition, supports the second network from the first net Network obtains the relevant operation of terminal contexts, the second network is supported to obtain session context from first network, support first IP address is kept when network is to the second network transitions.

7. according to the method described in claim 4, it is characterized in that, the initial access relevant operation includes following at least one : attach request is initiated in second network, initiates registration request in second network and request type is initial It accesses, delete the terminal in the session of context, the deletion terminal in the first network in the first network Context, and session is established in second network re-request；

The non-initial access relevant operation include at least one of the following: in second network launch position update request, Routing Area Update request is initiated in second network, initiates registration request in second network and request type is to move The terminal in the context mapping in the first network is the context in second network by dynamic register update, with And the PS resource in the second network request active session.

8. a kind of method of interaction between network, is applied to the first network element, which is characterized in that the described method includes:

Obtain or determine the first information, the information of first information interaction between first network and the second network；

Send the first information.

9. according to the method described in claim 8, it is characterized in that, the first information includes at least one of the following: described The interactive instruction information whether supported, the terminal are transferred to described from the first network between one network and second network The relevant information of second network, session instruction information, obtains context type information, and switching at access way instruction information Type information.

10. a kind of method of interaction between network, is applied to the second network element, which is characterized in that the described method includes:

According to the first information, determine that Dialog processing operates.

11. according to the method described in claim 10, it is characterized in that, the first information include at least one of the following: it is described The interactive instruction information whether supported, the terminal are transferred to institute from the first network between first network and second network It states the relevant information of the second network, access way instruction information, session instruction information, obtain context type information, and cut Change type information.

12. according to the method for claim 11, which is characterized in that between the first network and second network interaction be The instruction information of no support include at least one of the following: whether support from the first network to the operation of second network, Whether support the operation from second network to the first network, whether support first network and the second network switching, Whether support the first network and the second inter network packet exchange PS to circuit switching (CS) switching, whether support the first net Whether whether PS switch, the first network and the second internetwork context supported to obtain, prop up between network and the second network It holds the first network and the second internetwork Internet protocol IP address is kept, and whether support first network and the The forwarding of two inter-network datas；

The acquisition context type information includes at least one of the following: whether obtain session context, whether obtain mobility Managing context, and whether obtain non-voice session context；

The switching type information includes at least one of the following: whether initiate switching, whether initiates PS switching, whether initiates PS and arrive CS switching, and whether PS switching is initiated when initiating PS to CS switching.

13. method according to any one of claims 10 to 12, which is characterized in that Dialog processing operation include with Any one of lower: whether PS switches relevant operation and whether obtains context-sensitive operation；

Described whether PS switching relevant operation includes any one of following: whether initiating PS switching, whether is initiating PS to CS switching Whether include session context when Shi Faqi PS switching, preparation PS to CS switching, the session for whether separating voice and non-voice, be No transmission session context, and whether ignore session context in switching request；

It is described whether to obtain context-sensitive operation including any one of following: whether to initiate to obtain context request, whether respond Context request is obtained, session context whether is returned, whether refuses to obtain the request of session context, whether initiates to obtain and move The request of dynamic managing context, and whether it is returned only to mobile management context.

14. according to the method described in claim 10, determining Dialog processing it is characterized in that, described according to the first information Operation, comprising:

In the case where the first information meets first condition, non-PS switching relevant operation and/or non-acquisition context are executed Relevant operation；

In the case where the first information meets second condition, executes PS switching relevant operation and/or obtain context-sensitive Operation.

15. according to the method for claim 14, which is characterized in that the first condition is included at least one of the following: and do not propped up Hold between the first network and second network interaction, do not support PS operation between the first network and second network, Do not support that IP address keeps, do not support from the first network to second net between second network and the first network The operation of network is not supported from the first network to the PS of second network operation, is not supported from second network to institute It states the operation of first network, the PS from second network to the first network is not supported to operate, do not support from described second Session or non-reconstruction PS resource, switching type letter are rebuild in PS operation, the session instruction information instruction of network to the first network Breath instruction does not initiate PS switching or indicates not initiating PS switching when initiating PS to CS switching, obtains the instruction of context type information Session context is not obtained, and obtains MM Context and/or does not obtain non-voice session context；

The second condition, which includes at least one of the following:, to be supported interaction between the first network and second network, supports institute It states PS operation between first network and second network, support that IP address is protected between second network and the first network It holds, supports from the first network to the operation of second network, supports from the first network to second network PS operation supports operation from second network to the first network, supports from second network to first net The PS operation of network, session instruction information indicate non-reconstruction session or rebuild PS resource, PS switching is initiated in the instruction of switching type information Or instruction initiates PS switching when initiating PS to CS and switching, obtains context type information instruction acquisition session context, obtains Non-voice session context.

16. method according to claim 14 or 15, which is characterized in that PS switching relevant operation include it is following at least One: initiate PS switching, initiate PS to CS switching when initiate PS switching, prepare PS to CS switch when include session context, Send session context, and the protocol Data Unit PDU session of separation voice and non-voice；

The non-PS switching relevant operation, which includes at least one of the following:, not to be initiated PS switching, is initiating PS to CS switching Shi Bufa PS switching request is played, prepares not including session context when PS to CS switching, prepare not including non-voice meeting when PS to CS switching Words context does not execute the session of separation voice and non-voice, and ignores the session context in switching request.

17. according to the method for claim 16, which is characterized in that if second network element is the wireless of the first network Access network elements, then whether it includes session context that the PS switching relevant operation includes: when preparing PS to CS switching；

If second network element is the core network element of the first network, the PS switching relevant operation includes following any : whether initiates PS switching to second network or the first network and the second internetwork interactive network element and ask It asks, and whether sends session context；

If second network element is the interactive network element, whether the PS switching relevant operation includes any one of following: separating The session of voice and non-voice, whether to second network initiate PS switching request, whether to second network element initiate PS switching is initiated when PS to CS switches, and whether ignores the session context in the switching request that the first network is sent.

18. method according to claim 14 or 15, which is characterized in that described to obtain context-sensitive operation including following At least one of: it initiates to obtain context request, response acquisition context request, and returns to session context；

The context-sensitive operation of non-acquisition, which includes at least one of the following:, not to be initiated to obtain context request, refuses to obtain Hereafter request, do not return session context, do not return non-voice session context, initiate obtain mobile management context request, Mobile management context is returned, and is returned only to the relevant session context of voice.

19. according to the method for claim 18, which is characterized in that if second network element is the wireless access of the second network Whether network element, then described whether to obtain context-sensitive operation include any one of following: to the first network or interactive network Whether member is initiated to obtain context request, and to the first network or the first network and the second internetwork friendship Queued session context when mutual network element initiates to obtain context request；

It is described whether to obtain context-sensitive operation including following if second network element is the core network element of the second network Any one: whether to second network or the interactive network element session context is returned to, whether to second network or institute Interactive network element is stated to return to non-voice session context, whether to second network or the interactive network element be returned only to mobile management Context, and whether to second network or the interactive network element it is returned only to voice conversation related context；

It is described whether to obtain context-sensitive operation including any one of following: to be if second network element is the interactive network element Whether the session context of no separation voice and non-voice to second network returns to session context, whether to described the Two networks return to non-voice session context, whether to second network are returned only to mobile management context, and whether to Second network is returned only to voice conversation related context.

20. a kind of method of interaction between network, is applied to terminal, which is characterized in that the described method includes:

Determine whether to meet predetermined condition；

If meeting the predetermined condition, target information is sent, the target information includes handing between first network and the second network The information of cross-correlation.

21. according to the method for claim 20, which is characterized in that the target information includes at least one of the following: described Whether whether terminal from the first network be moved to the instruction information of second network, the terminal from the first network It is switched to the instruction information of the circuit-switched CS domain in second network, whether by the first network and second net Interaction network element between network obtains context, the first network and second network of the terminal in the first network Between interaction network element index information and the first network network element index information.

22. the method according to claim 20 or 21, which is characterized in that the predetermined condition includes at least one of the following: The terminal is moved to second network, the terminal from the first network to second network from the first network PS to CS switching is known and supports interaction between the first network and second network, knows the first network and described the The index information of interaction network element between two networks, and know and handed between the first network and second network by interaction network element Mutually.

23. a kind of method of interaction between network, is applied to network element, which is characterized in that the described method includes:

Target information is obtained, the target information includes the information of intercorrelation between first network and the second network；

According to the target information, it is confirmed whether by being handed between second network between the interaction network element execution first network Mutually.

24. according to the method for claim 23, which is characterized in that the acquisition target information, comprising:

Receive the terminal, first network network element, first network core network element or the first network and second net The target information that interaction network element between network is sent.

25. the method according to claim 23 or 24, which is characterized in that the target information includes at least one of the following: Whether whether the terminal from the first network be moved to the instruction information of second network, the terminal from described first Whether network switches to second network PS to the CS, is obtained by the first network and the second internetwork interactive network element The index information of terminal interaction network element between context, first network and the second network in the first network is taken, with And the index information of the first network network element.

26. according to the method for claim 23, which is characterized in that it is described according to the target information, it is confirmed whether to pass through Interaction network element executes the interaction between second network between the first network, comprising:

In the case where the target information meets first condition, execute by the interactive network element execute the first network with The relevant operation of interaction between second network；

The first condition includes at least one of the following: that the target information indicates that the terminal is moved to from the first network Second network, the target information indicate that the terminal switches from the first network to the second network PS to CS, is described Target information refers to comprising the index information of interaction network element and the target information between the first network and second network Show the interaction that first network and the second network are realized by interaction network element.

27. according to the method for claim 26, which is characterized in that described to execute first net by the interactive network element The relevant operation interacted between network and second network includes at least one of the following: that sending context to the interactive network element asks It sums and sends the index information of first network network element to the interactive network element.

28. according to the method for claim 23, which is characterized in that according to the target information, be confirmed whether to pass through interaction Network element executes the interaction between second network between the first network, comprising:

In the case where the target information meets second condition, executes and directly obtain the terminal in institute to the first network State the relevant operation of the context in first network；

The second condition includes at least one of the following: that the target information indicates that the terminal is moved from the first network Move second network, the target information indicate the terminal be not from the first network to the second network PS to CS switching, the target information do not include the index information of interaction network element between the first network and second network, and The target information instruction is not executed by interactive network member to be interacted between the first network and second network.

29. a kind of terminal, which is characterized in that the terminal includes: to obtain module and determining module；

The acquisition module, for obtaining the first information, first information intercorrelation between first network and the second network Information；

The determining module, the first information for being obtained according to the acquisition module, determines and accesses second network Access operation.

30. a kind of network element, the network element is the first network element, which is characterized in that the network element includes: to obtain module and transmission mould Block；

The acquisition module, for obtaining or determining the first information, the first information is between first network and the second network Interactive information；

The sending module, the first information for obtaining or determining for sending the acquisition module.

31. a kind of network element, the network element is the second network element, which is characterized in that the network element includes: to obtain module and determining mould Block；

The determining module, the first information for being obtained according to the acquisition module, determines that Dialog processing operates.

32. a kind of terminal, which is characterized in that the terminal comprises determining that module and sending module；

The determining module is used to determine whether to meet predetermined condition；

The sending module sends target information, the mesh if meeting the predetermined condition for determining module determination Mark information includes the information of intercorrelation between first network and the second network.

33. a kind of network element, which is characterized in that the network element includes: to obtain module and processing module；

The acquisition module, for obtaining target information, the target information includes interaction phase between first network and the second network The information of pass；

The processing module, the target information for being obtained according to the acquisition module, is confirmed whether through interaction network element The interaction between the second network between execution first network.

34. a kind of terminal, which is characterized in that including processor, memory and be stored on the memory and can be at the place The computer program run on reason device is realized when the computer program is executed by the processor as appointed in claim 1 to 7 Between network described in one the step of the method for interaction；Or between network of the realization as described in any one of claim 20 to 22 The step of interactive method.

35. a kind of network element, which is characterized in that the network element be the first network element, first network element include processor, memory and It is stored in the computer program that can be run on the memory and on the processor, the computer program is by the processing Device realizes the step of method interacted between network as claimed in claim 8 or 9 when executing.

36. a kind of network element, which is characterized in that the network element be the second network element, second network element include processor, memory and It is stored in the computer program that can be run on the memory and on the processor, the computer program is by the processing When device executes between network of the realization as described in any one of claim 10 to 19 the step of the method for interaction.

37. a kind of network element, which is characterized in that including processor, memory and be stored on the memory and can be at the place The computer program run on reason device is realized when the computer program is executed by the processor as in claim 23 to 28 Between described in any item networks the step of the method for interaction.

38. a kind of communication system, it is characterized in that, the communication system includes terminal, such as right as claimed in claim 29 It is required that network element described in 30 and network element as claimed in claim 31；Alternatively,

The communication system includes terminal as claimed in claim 32 and network element as claimed in claim 33.