CN109246767A

CN109246767A - A kind of data relay method, apparatus, network functional entity and SMF entity

Info

Publication number: CN109246767A
Application number: CN201710458659.5A
Authority: CN
Inventors: 王胡成
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2019-01-18
Anticipated expiration: 2037-06-16
Also published as: CN109246767B

Abstract

The present invention provides a kind of data relay method, apparatus, network functional entity and SMF entities, wherein, the data relay method includes: to obtain the mapping relations of EPS carrying information and PDU session information, selection is used for the SMF entity of data forwarding, SMF entity is sent by the mapping relations of EPS carrying information and PDU session information, the mapping relations of information and PDU session information, configuration data forwarding tunnel are carried according to EPS by SMF entity.The solution of the present invention can be avoided the redundancy of forwarding data transmission, reduce the time delay of data forwarding, improve the efficiency of forwarding data transmission.

Description

A kind of data relay method, apparatus, network functional entity and SMF entity

Technical field

The present invention relates to field of communication technology more particularly to a kind of data relay method, apparatus, network functional entity and SMF entity.

Background technique

Currently, in order to guarantee the 5th Generation Mobile Communication System (5G, 5^thGeneration normal operation), 5G network need Support the interoperability with the long term evolution of universal mobile communications technology (LTE, Long Term Evolution) network, wherein It is a kind of list registration mode interoperability mode be able to use family equipment (UE, User Equipment) in 5G network and LTE network Between between completion system inter-RAT switch.In handoff procedure, due to the data transfer mode and LTE network of 5G network Data transfer mode is different, therefore between not homologous ray when progress data forwarding, it is desirable that supports the core net function of data forwarding Entity can correctly will be from the transmission channel that the data received in a system are mapped to another system.Current mutual behaviour Make in scheme, uses the PGW-U+UPF for supporting public data network gateway customer face function PGW-U and user plane functions UPF simultaneously Entity completes data forwarding.But this method that data will be forwarded to be routed to PGW-U+UPF entity, will cause the data of redundancy Routing, and increase the time delay of data forwarding.

Mobile management function to ps domain in the network architecture for supporting 5G network and LTE network interoperability, in LTE network Access in (MME, Mobility Management Entity) entity and 5G network and mobile management function to ps domain (AMF, Authentication Management Function) the Nx interface between entity is optional support.As network support Nx When interface, network can support the switching between 5G network and LTE network, need to transmit between MME entity and AMF entity at this time The contextual information of UE, the context including mobility context and session connection.This network for supporting Nx interface of UE access When, network may configure its registration mode to single registration mode, i.e. single registration mode, at present single registration Mode is the operating mode that UE is strictly required and supports.

Wherein, the handoff procedure of 5G network to the LTE network under single registration mode is main are as follows:

After S1:AMF entity receives the switching request of wireless access network (RAN, Radio Access Network), request All conversation management functional (SMF, Session Management Function) entity returns are mapped by PDU session context Grouping system (EPS, Evolved Packet System) bearer context of the evolution of generation；

After S2:AMF entity receives the EPS bearer context that all SMF entities return, above and below the mobility in conjunction with UE Text generates UE context, and passes to MME entity by Nx interface；

S3: AMF entity is regarded Nx interface as though S10 interface as MME entity, target side MME by target side MME entity Entity continues follow-up process after from Nx interface to UE context, according to the S1 switching flow of existing EPS system；

S4: after SMF entity/PGW-C entity determines that the session of UE is switched to LTE network, dedicated bearer may be initiated and swashed Journey is lived through to establish dedicated bearer for certain non-GRB QoS flows.

And the switching preparation process of LTE network to 5G network under single registration mode is main are as follows:

After S1:MME entity receives the switching request of UMTS Terrestrial radio access network E-UTRAN of evolution, selection target AMF entity, and EPS bearer context is sent to AMF entity；

After S2:AMF entity receives the request of MME entity, EPS MM Context is completed to 5GS mobility pipe The conversion of context is managed, includes EPS bearer context in the UE context that wherein MME entity provides, and in EPS bearer context The uplink tunnel information of address comprising PGW-C+SMF entity and PGW-U+UPF entity；

S3:AMF entity sends a request message to PGW-C+SMF physically, and request PGW-C+SMF entity returns to PDU session Identify the information such as ID, QoS Rules, EPS carrying list；

S4:AMF entity sends switching request message to the Next-Generation networking NG RAN in 5G network, and request is established Empty port load-supporting；

S5:NG RAN returns to ACK message to AMF entity, and the side the RAN tunnel of the N3 interface for data forwarding is carried in message Road information；

S6:AMF entity sends request message to PGW-C+SMF entity, carries the side RAN of the N3 interface for data forwarding Tunnel information；

S7:PGW-C+SMF entity returns to PDU session id to AMF entity and EPS carries list, and wherein EPS is carried in list Including the carrying information established in 5G system, the core network tunnels information of the carrying including needing data relay；

S8:AMF entity carries EPS to MME entity returning response message, in message and carries list, so that MME entity can be with Gateway (SGW, Serving Gate is requested using the core network tunnels information of the carrying therein for needing data relay Way forwarding tunnel) is created.

Currently, in the interoperability scene of 5G network and LTE network, by PGW-U+UPF entity as data relay node, This requires the data that the anchor point of session issues first re-routing back anchor point, then is forwarded to target BS.Therefore, existing mutual Data relay method in operation scenario will cause forwarding data transmitting redundancy, and the time delay of data forwarding is big, forwarding data transmission Low efficiency, especially using local route roaming scence under.

Summary of the invention

The embodiment of the present invention to be designed to provide a kind of data relay method, apparatus, network functional entity and SMF real Body, with solve it is existing interoperability scene in data relay method, caused by forwarding data transmitting redundancy, data forwarding The big problem of time delay.

In a first aspect, being applied to network functional entity the embodiment of the invention provides a kind of data relay method, comprising:

Obtain the mapping relations of EPS carrying information and PDU session information；

Selection is used for the SMF entity of data forwarding；

The SMF entity is sent by the mapping relations of EPS carrying information and PDU session information, it is real by the SMF Body carries the mapping relations of information and PDU session information, configuration data forwarding tunnel according to the EPS.

Preferably, the network functional entity is AMF entity or PGW-C+SMF entity.

Preferably, when data are from 5G system forwards to LTE system, the acquisition EPS carrying information and PDU session information Mapping relations, comprising:

Obtain the mapping relations of the ID of the ID for the EPS carrying for needing to receive forwarding data and the QoS flow of PDU session.

Preferably, the network functional entity is AMF entity, and described obtain needs to receive the EPS carrying for forwarding data Before the mapping relations of ID and the ID of the QoS flow of PDU session, the method also includes:

It is obtained from MME entity and needs to receive the ID that the EPS of forwarding data is carried.

Preferably, before the ID that the EPS carrying for needing to receive forwarding data is obtained from MME entity, the method is also Include:

Needs to be selected, which are provided, to the MME entity receives the ID that the EPS of forwarding data is carried.

Preferably, before the ID that the EPS that needs reception forwarding data to be selected are provided to the MME entity is carried, The method also includes:

The QoS flow ID for needing to carry out the PDU session of data forwarding is obtained from the NG RAN of 5G system；

The mapping relations of QoS flow ID and EPS the carrying ID of PDU session are obtained from PGW-C+SMF entity；

According to the QoS flow ID of the PDU session and EPS carrying ID mapping relations, determine it is described need to carry out data turn The corresponding needs to be selected of the QoS flow ID of the PDU session of hair receive the ID of the EPS carrying of forwarding data.

Preferably, when data are forwarded to 5G system from LTE system, the acquisition EPS carrying information and PDU session information Mapping relations, comprising:

Obtain the ID and EPS of related QoS flow in the ID and the PDU session for the PDU session for needing to receive forwarding data The mapping relations of the ID of carrying.

Preferably, the network functional entity is AMF entity, and described obtain needs to receive the PDU session for forwarding data Before the mapping relations for the ID that the ID and EPS of related QoS flow are carried in ID and the PDU session, the method also includes:

The ID for needing to receive the QoS flow of PDU session of forwarding data is obtained from the NG RAN of 5G system.

Preferably, it is described from the NG RAN of 5G system obtain need receive forwarding data PDU session QoS flow ID it Before, the method also includes:

The ID of the QoS flow of the PDU session of needs reception forwarding data to be selected is provided to the NG RAN.

Preferably, the ID of the QoS flow of the PDU session that needs reception forwarding data to be selected are provided to the NG RAN Before, the method also includes:

It is obtained from MME entity and needs to carry out the ID that the EPS of data forwarding is carried；

According to the ID of the EPS carrying for needing to carry out data forwarding, determine that the needs to be selected receive forwarding data PDU session QoS flow ID.

Preferably, the selection is used for the SMF entity of data forwarding, comprising:

Location information based on UE, and/or PDU session information relevant to data forwarding, selection is for data forwarding The SMF entity；

Wherein, PDU session relevant to data forwarding is to need to carry out the PDU session of data forwarding, or need to carry out The EPS of data forwarding carries corresponding PDU session；

The PDU session information includes following one or more: the corresponding data network title of PDU session and PDU session Affiliated network slice information.

Preferably, the network functional entity is PGW-C+SMF entity, and the selection is used for the session management of data forwarding Function SMF entity, comprising:

Receive the request message that AMF entity is sent；

According to the request message, selection is used for the SMF entity of data forwarding.

Second aspect, the embodiment of the invention provides a kind of data relay methods, are applied to SMF entity, comprising:

Receive the mapping relations of EPS carrying information and PDU session information that AMF entity or PGW-C+SMF entity are sent；

The mapping relations of information and PDU session information, configuration data forwarding tunnel are carried according to the EPS.

Preferably, when data are from 5G system forwards to LTE system, the EPS carrying information is reflected with PDU session information Penetrate the mapping relations of the ID of the QoS flow of the ID that relationship is the EPS carrying for needing to receive forwarding data and PDU session, the basis The mapping relations of EPS the carrying information and PDU session information, configuration data forwarding tunnel, comprising:

Select UPF entity；

Core network tunnels for PDU session distribution for data forwarding identify, and configure the UPF entity and be used for data Forwarding tunnel between the SGW of forwarding and the PDU session tunnel between the NG RAN of 5G system；

The mapping relations of the ID of the ID of the EPS carrying of forwarding data and the QoS flow of PDU session are received according to the needs, The QoS flow of the PDU session is tied to the EPS for needing to receive forwarding data to carry on corresponding forwarding tunnel, so that The data can be forwarded a packet to the forwarding tunnel of correct EPS carrying according to the QoS flow ID of data packet by the UPF entity On.

Preferably, when data are forwarded to 5G system from LTE system, the EPS carrying information is reflected with PDU session information Penetrate ID and the EPS carrying of related QoS flow in the ID and the PDU session that relationship is the PDU session for needing to receive forwarding data ID mapping relations, it is described according to the EPS carry information and PDU session information mapping relations, configuration data forwarding tunnel Road, comprising:

Select UPF entity；

It is used for the Tunnel End Point Identifier of data forwarding for EPS carrying distribution, and configures the NG of the UPF entity and 5G system PDU session tunnel between RAN；

According to the ID of related QoS flow in the ID of the PDU session for needing to receive forwarding data and the PDU session with The mapping relations of the ID of EPS carrying, the EPS bearing binding is corresponding to the PDU session for needing to receive forwarding data On forwarding tunnel, enable the UPF entity will be correct in the packet marking received from the tunnel that the EPS is carried QoS flow ID, and be forwarded on the forwarding tunnel of correct PDU session.

The third aspect, the embodiment of the invention provides a kind of data relay devices, are applied to network functional entity, comprising:

First obtains module, for obtaining the mapping relations of EPS carrying information and PDU session information；

Selecting module, for selecting the SMF entity for data forwarding；

First sending module, it is described for sending the mapping relations of EPS carrying information and PDU session information to SMF entity forwards tunnel according to the mapping relations configuration data that the EPS carries information and PDU session information by the SMF entity Road.

Preferably, the network functional entity is AMF entity or PGW-C+SMF entity.

Preferably, when data are from 5G system forwards to LTE system, the first acquisition module is specifically used for:

Preferably, the network functional entity is AMF entity, described device further include:

Second obtains module, for obtaining the ID for needing to receive the EPS of forwarding data and carrying from MME entity.

Preferably, described device further include:

Second sending module, what the EPS for providing needs reception forwarding data to be selected to the MME entity was carried ID。

Preferably, described device further include:

Third obtains module, the QoS flow of the PDU session for needing to carry out data forwarding from the NG RAN of 5G system acquisition ID；

4th obtains module, the mapping of QoS flow ID and EPS the carrying ID for obtaining PDU session from PGW-C+SMF entity Relationship；

First determining module determines institute for carrying the mapping relations of ID according to the QoS flow ID and EPS of the PDU session What the EPS that the corresponding needs to be selected of QoS flow ID for stating the PDU session for needing to carry out data forwarding receive forwarding data was carried ID。

Preferably, when data are forwarded to 5G system from LTE system, the first acquisition module is used for:

5th obtains module, for obtaining the QoS flow for needing the PDU session of reception forwarding data from the NG RAN of 5G system ID.

Preferably, described device further include:

Third sending module, for providing the QoS that needs to be selected receive the PDU session of forwarding data to the NG RAN The ID of stream.

Preferably, described device further include:

6th obtains module, for obtaining the ID for needing to carry out the EPS of data forwarding and carrying from MME entity；

Second determining module determines described to be selected for the ID according to the EPS carrying for needing to carry out data forwarding Need to receive the ID of the QoS flow of the PDU session of forwarding data.

Preferably, the selecting module is specifically used for:

Preferably, the network functional entity is PGW-C+SMF entity, and the selecting module is used for:

The request message that AMF entity is sent is received, and according to the request message, selection is described for data forwarding SMF entity.

Fourth aspect, the embodiment of the invention provides a kind of data relay devices, are applied to SMF entity, comprising:

Receiving module, for receiving the EPS carrying information and PDU session letter that AMF entity or PGW-C+SMF entity are sent The mapping relations of breath；

Configuration module, for carrying the mapping relations of information and PDU session information, configuration data forwarding according to the EPS Tunnel.

Preferably, when data are from 5G system forwards to LTE system, the EPS carrying information is reflected with PDU session information Penetrate the mapping relations of the ID of the QoS flow of the ID that relationship is the EPS carrying for needing to receive forwarding data and PDU session, the configuration Module includes:

First selecting unit, for selecting UPF entity；

First configuration unit is identified for the core network tunnels for PDU session distribution for data forwarding, and described in configuration UPF entity and the PDU session tunnel for the forwarding tunnel between the SGW of data forwarding and between the NG RAN of 5G system；

First binding unit, for according to the ID of the EPS carrying for needing the to receive forwarding data and QoS of PDU session The QoS flow of the PDU session is tied to the EPS carrying for needing to receive forwarding data and corresponded to by the mapping relations of the ID of stream Forwarding tunnel on, the UPF entity is forwarded a packet to the data correctly according to the QoS flow ID of data packet On the forwarding tunnel of EPS carrying.

Preferably, when data are forwarded to 5G system from LTE system, the EPS carrying information is reflected with PDU session information Penetrate ID and the EPS carrying of related QoS flow in the ID and the PDU session that relationship is the PDU session for needing to receive forwarding data ID mapping relations, the configuration module includes:

Second selecting unit, for selecting UPF entity；

Second configuration unit, for being used for the Tunnel End Point Identifier of data forwarding for EPS carrying distribution, and described in configuration PDU session tunnel between UPF entity and the NG RAN of 5G system；

Second binding unit, for according to the ID for needing to receive the PDU session for forwarding data and the PDU session The mapping relations of the ID of ID and the EPS carrying of middle correlation QoS flow, the EPS bearing binding is needed to receive forwarding number to described According to the corresponding forwarding tunnel of PDU session on, the UPF entity will be received from the tunnel that the EPS is carried Correct QoS flow ID in packet marking, and be forwarded on the forwarding tunnel of correct PDU session.

5th aspect the embodiment of the invention provides a kind of network functional entity, including memory, processor and is stored in On the memory and the computer program that can run on the processor, wherein when the processor executes described program It performs the steps of

Selection is used for the SMF entity of data forwarding；

The SMF entity is sent by the mapping relations of EPS carrying information and PDU session information, it is real by the SMF Body carries the mapping relations configuration data forwarding tunnel of information and PDU session information according to the EPS.

6th aspect the embodiment of the invention provides a kind of SMF entity, including memory, processor and is stored in described On memory and the computer program that can run on the processor, wherein the processor is realized when executing described program Following steps:

7th aspect, the embodiment of the invention provides a kind of computer readable storage mediums, are stored thereon with computer journey Sequence performs the steps of when described program is executed by processor

Selection is used for the SMF entity of data forwarding；

Eighth aspect, the embodiment of the invention provides a kind of computer readable storage mediums, are stored thereon with computer journey Sequence performs the steps of when described program is executed by processor

The data relay method of the embodiment of the present invention, the mapping that information and PDU session information are carried by obtaining EPS are closed System, selection are used for the SMF entity of data forwarding, send SMF reality for the mapping relations of EPS carrying information and PDU session information Body, by SMF entity according to EPS carry information and PDU session information mapping relations configuration data forwarding tunnel, can be avoided by PGW-U+UPF entity, to avoid the redundancy of forwarding data transmission, reduces the time delay of data forwarding as head-end site, Improve the efficiency of forwarding data transmission.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without any creative labor, it can also be obtained according to these attached drawings His attached drawing.

Fig. 1 shows the flow charts of the data relay method of the embodiment of the present invention；

Fig. 2 indicates the flow chart of the data relay process of specific example one of the present invention；

Fig. 3 indicates the flow chart of the data relay process of specific example two of the present invention；

Fig. 4 indicates the flow chart of the data relay process of specific example three of the present invention；

Fig. 5 indicates the flow chart of the data relay process of specific example four of the present invention；

Fig. 6 indicates the flow chart of the data relay process of specific example five of the present invention；

Fig. 7 indicates the flow chart of another data relay method of the embodiment of the present invention；

Fig. 8 shows one of the structural schematic diagrams of the data relay device of the embodiment of the present invention；

Fig. 9 indicates the second structural representation of the data relay device of the embodiment of the present invention；

Figure 10 indicates the third structural representation of the data relay device of the embodiment of the present invention；

Figure 11 indicates the four of the structural schematic diagram of the data relay device of the embodiment of the present invention；

Figure 12 indicates the structural schematic diagram of the network functional entity of the 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.

Shown in Figure 1, the embodiment of the invention provides a kind of data relay methods, are applied to network functional entity, packet Include following steps:

Step 101: obtaining the mapping relations of EPS carrying information and PDU session information.

Wherein, the network functional entity in the embodiment of the present invention can be real for core access and mobile management function to ps domain AMF Body, or while supporting the PGW-C+SMF entity of public data network gateway control face function PGW-C and anchor point SMF.

The data relay method of the embodiment of the present invention is applicable to the interoperability scene of 5G network and LTE network, and data can 5G system can also be forwarded to from LTE system from 5G system forwards to LTE system.When data are from 5G system forwards to LTE When system, the mapping relations of the acquisition EPS carrying information and PDU session information can specifically: obtains and needs reception forwarding data EPS carrying ID and PDU session QoS flow ID mapping relations.In addition, when data are from 5G system forwards to LTE system When, it is described to obtain EPS carrying information and the mapping relations of PDU session information also are as follows: to obtain the ID of EPS carrying and need to carry out The mapping relations of the ID of the QoS flow of the PDU session of data forwarding.

And when data are forwarded to 5G system from LTE system, the acquisition EPS carrying information is reflected with PDU session information The relationship of penetrating can specifically: obtain in ID the and PDU session for the PDU session for needing to receive forwarding data the ID of related QoS flow with The mapping relations of the ID of EPS carrying.In addition, the acquisition EPS carries information when data are forwarded to 5G system from LTE system May be used also with the mapping relations of PDU session information are as follows: obtain the ID for the EPS carrying for needing to carry out data forwarding and the ID of PDU session And in PDU session the ID of related QoS flow mapping relations.

Step 102: selection is used for the SMF entity of data forwarding.

Wherein, the SMF entity of this step selection concretely intermediate SMF entity.Network functional entity is in selection for counting According to forwarding SMF entity when, can be based on the location information of UE, and/or PDU session information relevant to data forwarding is selected It selects.

Specifically, step 102 can in the embodiment of the present invention are as follows:

Location information based on UE, and/or PDU session information relevant to data forwarding, selection is for data forwarding SMF entity.

Wherein, PDU session relevant to data forwarding is to need to carry out the PDU session of data forwarding, or need to carry out The EPS of data forwarding carries corresponding PDU session.And PDU session information may include following one or more: PDU session is corresponding Data network title (DNN, Data Network Name) and PDU session belonging to network slice information.

In the embodiment of the present invention, when network function main body is PGW-C+SMF entity, PGW-C+SMF entity selection is used for The process of the SMF entity of data forwarding can are as follows:

Receive the request message that AMF entity is sent；

According to the request message received, selection is used for the SMF entity of data forwarding.

In the specific implementation process, if UE is in non-roaming state, i.e., selected to turn for data in home network The SMF entity of hair may be PGW-C+SMF entity, at this point, sending the EPS carrying information and PDU meeting to PGW-C+SMF entity The step of talking about the mapping relations of information can omit；It is if UE is in roaming state, i.e., selected for forwarding in visited network SMF entity may be real for the V-SMF (visitor SMF, visited network in SMF) in the prior art for servicing the PDU session Body.

Step 103: SMF entity is sent by the mapping relations of EPS carrying information and PDU session information, by SMF entity root According to the mapping relations of EPS carrying information and PDU session information, configuration data forwarding tunnel.

Wherein, when the mapping relations of EPS carrying information and PDU session information are to need to receive that the EPS of data is forwarded to carry ID and PDU session QoS flow ID mapping relations when, the process of SMF entity configuration data forwarding tunnel can specifically: first First, UPF entity is selected；Then, for PDU session distribution for data forwarding core network tunnels identify, and configure UPF entity with PDU session tunnel for the forwarding tunnel between the SGW of data forwarding and between the NG RAN of 5G system；Finally, according to The mapping relations of the ID of the QoS flow of the ID and PDU session of the EPS carrying for needing to receive forwarding data, by PDU session QoS flow is tied on the corresponding forwarding tunnel of EPS carrying for needing to receive forwarding data, enables UPF entity according to data The QoS flow ID of packet forwards a packet to the data on the forwarding tunnel of correct EPS carrying.

And when the mapping relations of EPS carrying information and PDU session information are the ID for needing to receive the PDU session of forwarding data And in PDU session when the mapping relations of the ID of ID and the EPS carrying of related QoS flow, SMF entity configuration data forwarding tunnel Process can specifically: firstly, selection UPF entity；Then, the Tunnel End Point Identifier of data forwarding is used for for EPS carrying distribution, and Configure the PDU session tunnel between UPF entity and the NG RAN of 5G system；Finally, needing reception to forward data according to described The mapping relations of the ID of ID and the EPS carrying of related QoS flow, EPS bearing binding is arrived in ID the and PDU session of PDU session On the corresponding forwarding tunnel of PDU session for needing to receive forwarding data, UPF entity is connect the tunnel carried from EPS Correct QoS flow ID in the packet marking received, and be forwarded on the forwarding tunnel of correct PDU session.

In the embodiment of the present invention, when the mapping relations of EPS carrying information and PDU session information are to need to receive forwarding data EPS carrying ID and PDU session QoS flow ID mapping relations when, AMF entity in order to obtain need receive forwarding data EPS carrying ID and PDU session QoS flow ID mapping relations, obtain need receive forwarding data EPS carrying Before the mapping relations of ID and the ID of the QoS flow of PDU session, it can also be obtained from MME entity and the EPS of reception forwarding data is needed to hold The ID of load.

Further, AMF entity may be used also before the ID for obtaining the EPS carrying for needing to receive forwarding data from MME entity Needs to be selected are provided to MME entity and receive the ID that the EPS of forwarding data is carried, so that LTE network connects according to needs to be selected The ID for receiving the EPS carrying of forwarding data determines that final needs receive the ID of the EPS carrying of forwarding data.

In the specific implementation process, optionally, the eNB in LTE network is encapsulated in source according to the NG RAN in the 5G network of source The mapping for the EPS carrying that the QoS flow of the PDU session for needing to carry out data forwarding into the transparent vessel of target and mapping generate Relationship determines that final needs receive the ID of the EPS carrying of forwarding data.

Further, AMF entity to MME entity provide needs to be selected receive ID that the EPS of forwarding data is carried it Before, also need the ID for the EPS carrying for determining that needs to be selected receive forwarding data.And AMF entity determines that needs to be selected receive and turns The process for sending out the ID of the EPS carrying of data can are as follows:

According to the mapping relations of the QoS flow ID of PDU session and EPS carrying ID, the PDU meeting for needing to carry out data forwarding is determined The corresponding needs to be selected of the QoS flow ID of words receive the ID of the EPS carrying of forwarding data.

In the embodiment of the present invention, when the mapping relations of EPS carrying information and PDU session information are to need to receive forwarding data The ID of PDU session and the ID that carries of the ID and EPS of related QoS flow in the PDU session mapping relations when, AMF entity ID and the EPS carrying of related QoS flow in ID and the PDU session in order to obtain the PDU session for needing to receive forwarding data ID mapping relations, the related QoS flow in the ID and the PDU session for obtaining the PDU session for needing to receive forwarding data ID and EPS carrying ID mapping relations before, can also from the NG RAN of 5G system obtain need receive forwarding data PDU The ID of the QoS flow of session.

Further, AMF entity is obtaining the QoS for needing the PDU session of reception forwarding data from the NG RAN of 5G system Before the ID of stream, needs to be selected can be also provided to NG RAN and receive the ID for forwarding the QoS flow of PDU session of data, so that NG RAN receives the ID of the QoS flow of the PDU session of forwarding data according to needs to be selected, determines final to need to receive forwarding number According to PDU session QoS flow ID.

In the specific implementation process, optionally, NG RAN is encapsulated in source to the transparent of target according to the eNB in LTE network The mapping relations that the EPS carrying for needing to carry out data forwarding in container is generated with mapping are determined final to need to receive Forward the ID of the QoS flow of the PDU session of data.

Further, AMF entity is providing the QoS flow that needs to be selected receive the PDU session of forwarding data to NG RAN ID before, also need to determine that needs to be selected receive the ID of the QoS flow of the PDU session of forwarding data.And AMF entity determine it is to be selected The process of ID of QoS flow of the needs PDU session that receives forwarding data can are as follows:

The ID for carrying out the EPS carrying of data forwarding as needed determines that needs to be selected receive the PDU session of forwarding data QoS flow ID.

In the following, being illustrated respectively to the data relay process of specific example one to five of the present invention in conjunction with Fig. 2 to Fig. 6.

Example one

Referring to FIG. 2, indicating the flow chart of the data relay process of specific example one of the present invention.In example one, data by 5G system forwards create forwarding tunnel to LTE system, and by AMF entity requests.The data relay process of example one includes following Step:

The NG RAN of step 201:5G system sends switching request message to AMF entity；Wherein, switching request The QoS flow for needing to carry out the PDU session of data forwarding (or being data relay) is carried in (Handover Request) message Information, the QoS flow information include the ID of the QoS flow and its ID of affiliated PDU session；

Step 202:AMF entity determines corresponding PGW-C+SMF entity according to PDU session id, and real to the PGW-C+SMF Body sends session management and requests (SM Request) message；Wherein, it is carried in session management request message and needs to carry out data turn The ID of the QoS flow of the PDU session of hair；

Step 203:PGW-C+SMF entity determines the QoS flow of PDU session according to the mapping parameters of EPS carrying and QoS flow The mapping relations of ID and EPS carrying ID determine the corresponding EPS bearer context of QoS flow, and return to session management to AMF entity Respond (SM Response) message；Wherein, determining EPS bearer context is carried in session management response message；

Step 204:AMF entity will to re-positioning request (Forward relocation Request) message before The EPS bearer context for the mapping that PGW-C+SMF entity provides is transmitted to MME entity；Wherein, include in EPS bearer context Need to receive the information of the EPS carrying of forwarding data；

Step 205:MME entity carries information according to the EPS received, sends switching request message in E-UTRAN Target eNB；Wherein, corresponding EPS carrying information is carried in switching request message, for example EPS carries ID；

Step 206: target eNB carries information according to EPS, distributes forwarding tunnel Endpoint ID TEID for corresponding carrying, And TEID is returned in handoff response (Handover Request ACK) message and gives MME entity；

Step 207:MME entity creates indirect data forwarding tunnel using existing process and SGW, and distributes TEID；

Step 208:MME entity sends preceding to relocation response (Forward relocation to AMF entity Response) message, to return to AMF entity for the SGW of the data forwarding TEID distributed and associated EPS carrying ID；

Location information of the step 209:AMF entity based on UE is used for the SMF (IWK of data forwarding for each PDU session selection SMF) entity；

Step 210:AMF entity sends creation forwarding tunnel and requests (Create Indirect DF Tunnel Request) SMF entity of the message to selection；Wherein, it creates to carry in forwarding tunnel request message and needs to receive forwarding data The mapping relations and EPS bearer context of the ID of the QoS flow of the ID and PDU session of EPS carrying, such as EPS carry ID, EPS Carry corresponding SGW TEID and service quality stream mark QFI (QoS flow ID)；

Step 211:SMF entity selection UPF entity, the core net for PDU session distribution for the N3 interface of data forwarding Tunnel Identifier establishes the N3PDU session tunnel between NG RAN, and carries corresponding SGW TEID according to EPS and configure the UPF Forwarding tunnel between the SGW for data forwarding, and closed according to the mapping that EPS carries the QoS flow ID of ID and PDU session QoS flow is tied to EPS and carried on corresponding forwarding tunnel, UPF is reflected data packet according to the QFI of data packet by system It is mapped on correct forwarding tunnel；

Step 212:SMF entity sends creation forwarding tunnel and responds (Create Indirect DF Tunnel Response) message gives AMF entity；Wherein, it creates and carries the N3 interface for data forwarding in forwarding tunnel response message Core network tunnels mark；

Step 213:AMF entity sends switching command, and (Handover Command can be carried and be connect for the N3 of data forwarding Mouthful core network tunnels mark) arrive NG RAN, the data cached on NG RAN are forwarded on UPF, UPF is according to data Data packet is mapped to correct forwarding tunnel by the QFI in packet header, and UPF removes the QFI of data packet head, and forwards the data to SGW, i.e. AMF entity complete subsequent switching flow；

Step 214:NG RAN sends switching command to UE.

Example two

Referring to FIG. 3, indicating the flow chart of the data relay process of specific example two of the present invention.In example two, data by 5G system forwards create forwarding tunnel to LTE system, and by PGW-C+SMF entity requests.The data relay process packet of example two Include following steps:

Step 301:NG RAN sends switching request message to AMF entity；Wherein, in switching request message carry need into The QoS flow information of the PDU session of row data forwarding, the QoS flow information include the ID of the QoS flow and its ID of affiliated PDU session；

Step 302:AMF entity determines corresponding PGW-C+SMF entity according to PDU session id, and real to the PGW-C+SMF Body sends session management request message；Wherein, the PDU session for needing to carry out data forwarding is carried in session management request message The ID of QoS flow；

Step 303:PGW-C+SMF entity determines the QoS flow of PDU session according to the mapping parameters of EPS carrying and QoS flow The mapping relations of ID and EPS carrying ID determine the corresponding EPS bearer context of QoS flow, and return to session management to AMF entity Response message；Wherein, session management response message carries determining EPS bearer context；

In the EPS carrying for the mapping that step 304:AMF provides PGW-C+SMF entity to RELOCATION REQUEST message before Hereafter it is transmitted to MME entity；It wherein, include the information for needing to receive the EPS carrying of forwarding data in EPS bearer context；

Step 305:MME entity carries information according to the EPS received, sends switching request message in E-UTRAN Target BS eNB；Wherein, corresponding EPS carrying information is carried in switching request message, for example EPS carries ID；

Step 306: target eNB carries information according to EPS, distributes forwarding tunnel Endpoint ID TEID for corresponding carrying, And TEID is returned in switching response message and gives MME entity；

Step 307:MME entity creates indirect data forwarding tunnel using existing process and gateway SGW, and distributes TEID；

Step 308:MME entity is preceding to relocation response message to the transmission of AMF entity, to return to AMF entity for counting ID is carried according to the SGW of the forwarding TEID distributed and associated EPS；

Step 309:AMF entity sends wound according to the mapping relations of the EPS carrying ID received and the QoS flow of PDU session Forwarding tunnel request message is built to PGW-C+SMF entity；Wherein, create forwarding tunnel request message in carry EPS carrying ID and EPS carries corresponding SGW TEID；

Location information of the step 310:PGW-C+SMF entity based on UE is each PDU session selection in data forwarding Between SMF entity；

Step 311:PGW-C+SMF entity sends creation forwarding tunnel request message to the intermediate SMF entity of selection；Its In, create the QoS flow of ID and PDU session that the EPS carrying for needing to receive forwarding data is carried in forwarding tunnel request message The mapping relations and EPS of ID carry corresponding SGW TEID；

Step 312: intermediate SMF entity selection UPF entity, the core for PDU session distribution for the N3 interface of data forwarding Heart net Tunnel Identifier establishes the N3PDU session tunnel between NG RAN, and carries corresponding SGW TEID according to EPS and configure The UPF and for the forwarding tunnel between the SGW of data forwarding, and reflecting for the QoS flow ID of ID and PDU session is carried according to EPS Relationship is penetrated, QoS flow is tied to EPS and is carried on corresponding forwarding tunnel, enables UPF according to the QoS flow ID of data packet, it will Data packet is mapped on correct forwarding tunnel；

Step 313: intermediate SMF entity sends creation forwarding tunnel response message and gives PGW-C+SMF entity；Wherein, it creates The core network tunnels mark of the N3 interface for data forwarding is carried in forwarding tunnel response message；

Step 314:PGW-C+SMF entity sends creation forwarding tunnel response message and gives AMF entity；Wherein, creation forwarding The core network tunnels mark of the N3 interface for data forwarding is carried in tunnel response message；

Step 315:AMF entity sends switching command (the core network tunnels mark for carrying the N3 interface for data forwarding) To NG RAN, the data cached on NG RAN are forwarded on UPF, UPF is according to the QFI of data packet head, by data packet It is mapped to correct forwarding tunnel, UPF removes the QFI of data packet head, and forwards the data to SGW, i.e., AMF entity is completed subsequent Handoff procedure；

Step 316:NG RAN sends switching command to UE.

In examples detailed above one and example two, data by 5G system forwards to LTE system, but in addition to this data forwarding mode, Data can also be forwarded to 5G system by LTE system, such as example three is to example five.

Example three

Referring to FIG. 4, indicating the flow chart of the data relay process of specific example three of the present invention.In example three, data by LTE system is forwarded to 5G system, and the mapping of EPS carrying and PDU session is locally completed by AMF entity, and creation is requested to forward Tunnel.The data relay process of example three the following steps are included:

ENB in step 401:E-UTRAN sends switching request message to MME entity；Wherein, it is taken in switching request message Band needs to carry out the ID of the EPS carrying of data forwarding；

EPS bearer context is forwarded to AMF entity to RELOCATION REQUEST message before by step 402:MME entity, It is middle to carry the EPS carrying information for needing to carry out data forwarding；

Step 403:AMF entity carries up and down according to the EPS received, and default bearing ID therein is mapped as PDU meeting ID is talked about, all dedicated bearer ID are mapped as QoS flow ID, and determine the QoS flow for including in each PDU session；

Step 404:AMF entity is determined according to the mapping relations in the EPS carrying ID and step 403 that carry out data forwarding It needs to receive the PDU session information of forwarding data, and is forwarded by switching request message to target NG RAN；

Step 405: target NG RAN is used for data according to the PDU session information received, for corresponding PDU session distribution The access net tunnel of the N3 interface of forwarding, and AMF entity is returned in switching response message；

The information that step 406:AMF entity is returned according to NG RAN, for each PDU session choosing for needing to receive forwarding data Select the SMF entity for data relay, wherein AMF entity selects SMF entity based on the location information of UE；

Step 407:AMF entity sends creation forwarding tunnel request message and gives SMF entity；Wherein, creation forwarding tunnel is asked Ask the mapping relations that the QoS flow ID of EPS carrying ID and PDU session are carried in message, EPS carrying ID, QFI and PDU session pair The access net tunnel information for the N3 interface for data forwarding answered；

Step 408:SMF entity selection UPF entity is the GTP tunnel endpoint that every EPS carrying distribution is used for data forwarding TEID is identified, establishes the N3PDU session tunnel between NG RAN, and by EPS bearing binding to the corresponding forwarding tunnel of PDU session On road, and the mapping relations of PDU session id and EPS carrying ID are established, enables UPF that will carry corresponding GTP tunnel from EPS The data packet received stamps correct QoS flow ID, and the data packet is mapped on the forwarding tunnel of correct PDU session；

Step 409:SMF entity sends creation forwarding tunnel response message and gives AMF entity；Wherein, creation forwarding tunnel is rung Answer the GTP tunnel Endpoint ID TEID for data forwarding that distribution is carried in message；

Step 410:AMF entity sends preceding to relocation response message to MME entity；Wherein, forward direction relocation response disappears GTP tunnel Endpoint ID TEID is carried in breath；

Step 411:MME entity sends creation to SGW and turns using forwarding tunnel is created between existing process and SGW TUNNEL request message is sent out, creates and carries GTP tunnel Endpoint ID TEID in forwarding tunnel request message, and receives SGW and sends wound Build forwarding tunnel response message；

Step 412:MME entity sends switching command to NG RAN, can carry the SGW TEID for data forwarding, i.e., MME entity completes subsequent switching flow；

Step 413:NG RAN sends switching command to UE.

Example four

Referring to FIG. 5, indicating the flow chart of the data relay process of specific example four of the present invention.In example four, data by LTE system is forwarded to 5G system, and creates forwarding tunnel by AMF entity requests.The data relay process of example four includes following Step:

ENB in step 501:E-UTRAN sends switching request message to MME entity；Wherein, it is taken in switching request message Band needs to carry out the ID of the EPS carrying of data forwarding；

EPS carrying ID is forwarded to AMF entity to RELOCATION REQUEST message before by step 502:MME entity；

Step 503:AMF entity carries ID according to the EPS received, determines the PGW-C+SMF entity of service EPS carrying, And session management request message is sent to PGW-C+SMF entity；Wherein, EPS is carried in session management request message carry ID；

Step 504:PGW-C+SMF entity determines EPS carrying mapping according to the mapping parameters of EPS carrying and QoS flow PDU session id belonging to QoS flow ID and QoS flow, and returned by session management response message to AMF entity；

The PDU session information that step 505:AMF entity is returned according to SMF entity sends switching request to target NG RAN Message, wherein carrying PDU session id；

Step 506: target NG RAN is used for data according to the PDU session information received, for corresponding PDU session distribution The access net tunnel of the N3 interface of forwarding, and AMF entity is returned in switching response message；

The information that step 507:AMF entity is returned according to NG RAN is each PDU session selection for data relay SMF entity, wherein AMF entity selects SMF entity based on the location information of UE；

Step 508:AMF entity sends creation forwarding tunnel request message and gives SMF entity；Wherein, creation forwarding tunnel is asked Ask the mapping relations that the QoS flow ID of EPS carrying ID and PDU session are carried in message, EPS carrying ID, QFI and PDU session pair The access net tunnel information for the N3 interface for data forwarding answered；

Step 509:SMF entity selection UPF entity is the GTP tunnel endpoint that every EPS carrying distribution is used for data forwarding TEID is identified, establishes the N3PDU session tunnel between NG RAN, and by EPS bearing binding to the corresponding forwarding tunnel of PDU session On road, and the mapping relations list of PDU session id and EPS carrying ID is established, enables UPF that will carry corresponding GTP from EPS The data packet that tunnel receives stamps correct QoS flow ID, and the data packet is mapped on the forwarding tunnel of correct PDU session；

Step 510:SMF entity sends creation forwarding tunnel response message and gives AMF entity；Wherein, creation forwarding tunnel is rung Answer the GTP tunnel Endpoint ID TEID for data forwarding that distribution is carried in message；

Step 511:AMF entity sends preceding to relocation response message to MME entity；Wherein, forward direction relocation response disappears GTP tunnel Endpoint ID TEID is carried in breath；

Step 512:MME entity sends creation to SGW and turns using forwarding tunnel is created between existing process and SGW TUNNEL request message is sent out, creates and carries GTP tunnel Endpoint ID TEID in forwarding tunnel request message, and receives SGW and sends wound Build forwarding tunnel response message；

Step 513:MME entity sends switching command to NG RAN, can carry the SGW TEID for data forwarding, i.e., MME entity completes subsequent switching flow；

Step 514:NG RAN sends switching command to UE.

Example five

Referring to FIG. 6, indicating the flow chart of the data relay process of specific example five of the present invention.In example five, data by LTE system is forwarded to 5G system, and creates forwarding tunnel by PGW-C+SMF entity requests.The data relay process packet of example five Include following steps:

ENB in step 601:E-UTRAN sends switching request message to MME entity；Wherein, it is taken in switching request message Band needs to carry out the ID of the EPS carrying of data forwarding；

EPS carrying ID is forwarded to AMF entity to RELOCATION REQUEST message before by step 602:MME entity；

Step 603:AMF entity carries ID according to the EPS received, determines the PGW-C+SMF entity of service EPS carrying, And session management request message is sent to PGW-C+SMF entity；Wherein, EPS is carried in session management request message carry ID；

Step 604:PGW-C+SMF entity determines EPS carrying mapping according to the mapping parameters of EPS carrying and QoS flow PDU session id belonging to QoS flow ID and QoS flow, and returned by session management response message to AMF entity；

The PDU session information that step 605:AMF entity is returned according to SMF entity sends switching request to target NG RAN Message, wherein carrying PDU session id；

Step 606: target NG RAN is according to the PDU session information received, for each PDU meeting for needing to receive forwarding data Access net tunnel of the words distribution for the N3 interface of data forwarding, and AMF entity is returned in switching response message；

The information that step 607:AMF entity is returned according to NG RAN sends creation forwarding tunnel request message to PGW-C + SMF entity, request PGW-C+SMF entity selection are used for the SMF entity of data relay；Wherein, forwarding tunnel request message is created It is middle to carry the corresponding corresponding access net tunnel information for data forwarding of PDU session of EPS carrying ID and EPS carrying；

Location information of the step 608:PGW-C+SMF entity based on UE, selection are used for the SMF entity of data relay；

Step 609:PGW-C+SMF entity sends creation forwarding tunnel request message to SMF entity and gives SMF entity；Wherein, Create the mapping relations that the QoS flow ID of EPS carrying ID and PDU session are carried in forwarding tunnel request message, EPS carries ID, QFI And the access net tunnel information of the corresponding N3 interface for data forwarding of PDU session；

Step 610:SMF entity selection UPF entity is the GTP tunnel endpoint that every EPS carrying distribution is used for data forwarding TEID is identified, establishes the N3PDU session tunnel between NG RAN, and by EPS bearing binding to the corresponding forwarding tunnel of PDU session On road, and the mapping relations list of PDU session id and EPS carrying ID is established, enables UPF that will carry corresponding GTP from EPS The data packet that tunnel receives stamps correct QoS flow ID, and the data packet is mapped on the forwarding tunnel of correct PDU session；

Step 611:SMF entity sends creation forwarding tunnel response message and gives PGW-C+SMF entity；Wherein, creation forwarding The GTP tunnel Endpoint ID TEID for data forwarding of distribution is carried in tunnel response message；

Step 612:PGW-C+SMF entity sends creation forwarding tunnel response message and gives AMF entity, carries and turns for data The GTP tunnel Endpoint ID TEID of hair；

Step 613:AMF entity sends preceding to relocation response message to MME entity；Wherein, forward direction relocation response disappears GTP tunnel Endpoint ID TEID is carried in breath；

Step 614:MME entity sends creation to SGW and turns using forwarding tunnel is created between existing process and SGW TUNNEL request message is sent out, creates and carries GTP tunnel Endpoint ID TEID in forwarding tunnel request message, and receives SGW and sends wound Build forwarding tunnel response message；

Step 615:MME entity sends switching command to NG RAN, can carry the SGW TEID for data forwarding, i.e., MME entity completes subsequent switching flow；

Step 616:NG RAN sends switching command to UE.

Shown in Figure 7, the embodiment of the invention also provides a kind of data relay methods, applied to SMF entity, including with Lower step:

Step 701: receiving the EPS carrying information and PDU session information that AMF entity or PGW-C+SMF entity are sent Mapping relations.

Wherein, the embodiment of the present invention is applicable to the interoperability scene of 5G network and LTE network, and data can be from 5G system It is forwarded to LTE system, 5G system can also be forwarded to from LTE system.When data are from 5G system forwards to LTE system, the EPS It carries the mapping relations of information and PDU session information concretely: needing to receive ID and the PDU meeting of the EPS carrying of forwarding data The mapping relations of the ID of the QoS flow of words.And when data are forwarded to 5G system from LTE system, which carries information and PDU meeting It talks about the mapping relations of information concretely: needing to receive related QoS flow in ID the and PDU session of the PDU session of forwarding data ID and EPS carrying ID mapping relations.

Step 702: the mapping relations of information and PDU session information, configuration data forwarding tunnel are carried according to EPS.

Wherein, when the mapping relations of EPS carrying information and PDU session information are to need to receive that the EPS of data is forwarded to carry ID and PDU session QoS flow ID mapping relations when, the process of the configuration data forwarding tunnel of step 702 can are as follows:

Select UPF entity；

Core network tunnels for PDU session distribution for data forwarding identify, and configure UPF entity and be used for data forwarding SGW between forwarding tunnel and the PDU session tunnel between the NG RAN of 5G system；

The mapping relations for receiving the ID of the ID of the EPS carrying of forwarding data and the QoS flow of PDU session as needed, by PDU The QoS flow of session, which is tied to, to be needed to receive the EPS of forwarding data and carries on corresponding forwarding tunnel, enables UPF entity root According to the QoS flow ID of data packet, which is forwarded a packet on the forwarding tunnel of correct EPS carrying.

And when the mapping relations of EPS carrying information and PDU session information are the ID for needing to receive the PDU session of forwarding data And in PDU session when the mapping relations of the ID of ID and the EPS carrying of related QoS flow, the configuration data forwarding tunnel of step 702 Process can are as follows:

Select UPF entity；

It is used for the Tunnel End Point Identifier of data forwarding for EPS carrying distribution, and configures the NG RAN of UPF entity Yu 5G system Between PDU session tunnel；

ID and the EPS carrying of related QoS flow in ID the and PDU session of the PDU session of forwarding data are received as needed ID mapping relations, by EPS bearing binding to need receive forwarding data the corresponding forwarding tunnel of PDU session on so that Correct QoS flow ID in the packet marking that UPF entity can receive the tunnel carried from EPS, and be forwarded to correctly On the forwarding tunnel of PDU session.

In this way, the data relay method of the embodiment of the present invention, can avoid forwarding on the basis of accurately completing data forwarding The redundancy of data transmission, reduces the time delay of data forwarding, improves the efficiency of forwarding data transmission.

Data relay method of the invention is illustrated in above-described embodiment, below in conjunction with embodiment and attached drawing to this The data relay device of invention is illustrated.

Shown in Figure 8, the embodiment of the invention also provides a kind of data relay devices, are applied to network functional entity, Include:

First obtains module 801, for obtaining the mapping relations of EPS carrying information and PDU session information；

Selecting module 802, for selecting the SMF entity for data forwarding；

First sending module 803, for sending institute for the mapping relations of EPS carrying information and PDU session information SMF entity is stated, carries the mapping relations of information and PDU session information according to the EPS by the SMF entity, configuration data turns Send out tunnel.

The data relay device of the embodiment of the present invention, the mapping that information and PDU session information are carried by obtaining EPS are closed System, selection are used for the SMF entity of data forwarding, send SMF reality for the mapping relations of EPS carrying information and PDU session information Body, by SMF entity according to EPS carry information and PDU session information mapping relations configuration data forwarding tunnel, can be avoided by PGW-U+UPF entity, to avoid the redundancy of forwarding data transmission, reduces the time delay of data forwarding as head-end site, Improve the efficiency of forwarding data transmission.

Wherein, the network functional entity can be AMF entity or PGW-C+SMF entity.

In the embodiment of the present invention, when data are from 5G system forwards to LTE system, described first obtains module 801 specifically For:

In the embodiment of the present invention, the network functional entity is AMF entity, shown in Figure 9, described device further include:

Second obtains module 804, for obtaining the ID for needing to receive the EPS of forwarding data and carrying from MME entity.

Further, shown in Figure 9, described device further include:

Second sending module 805, for providing the EPS carrying that needs to be selected receive forwarding data to the MME entity ID.

Further, shown in Figure 9, described device further include:

Third obtains module 806, needs to carry out the PDU session of data forwarding for obtaining from the NG RAN of 5G system QoS flow ID；

4th obtains module 807, and the QoS flow ID and EPS for obtaining PDU session from PGW-C+SMF entity carry ID's Mapping relations；

First determining module 808, for carrying the mapping relations of ID according to the QoS flow ID and EPS of the PDU session, really The corresponding needs to be selected of the QoS flow ID of the fixed PDU session for needing to carry out data forwarding receive the EPS carrying of forwarding data ID.

In the embodiment of the present invention, when data are forwarded to 5G system from LTE system, described first obtains module 801 specifically For:

In the embodiment of the present invention, the network functional entity is AMF entity, shown in Figure 10, described device further include:

5th obtains module 809, needs to receive the PDU session for forwarding data for obtaining from the NG RAN of 5G system The ID of QoS flow.

Further, shown in Figure 10, described device further include:

Third sending module 810, for providing the PDU session for needing to receive forwarding data to be selected to the NG RAN The ID of QoS flow.

Further, shown in Figure 10, described device further include:

6th obtains module 811, for obtaining the ID for needing to carry out the EPS of data forwarding and carrying from MME entity；

Second determining module 812, the ID of the EPS carrying for needing to carry out data forwarding according to described, determine it is described to The needs of choosing receive the ID of the QoS flow of the PDU session of forwarding data.

In the embodiment of the present invention, the selecting module 802 is specifically used for:

In the embodiment of the present invention, the network functional entity is PGW-C+SMF entity, and the selecting module 802 is specifically used In:

Shown in Figure 11, the embodiment of the invention also provides a kind of data relay devices, are applied to SMF entity, comprising:

Receiving module 111, for receiving the EPS carrying information and PDU meeting that AMF entity or PGW-C+SMF entity are sent Talk about the mapping relations of information；

Configuration module 112, for carrying the mapping relations of information and PDU session information according to the EPS, configuration data turns Send out tunnel.

In the embodiment of the present invention, when data are from 5G system forwards to LTE system, the EPS carrying information and PDU session The mapping relations of information are the ID for the EPS carrying for needing to receive forwarding data and the mapping relations of the ID of the QoS flow of PDU session, The configuration module includes:

First selecting unit, for selecting UPF entity；

In the embodiment of the present invention, when data are forwarded to 5G system from LTE system, the EPS carrying information and PDU session The mapping relations of information be in the ID and the PDU session for the PDU session for needing to receive forwarding data the ID of related QoS flow with The mapping relations of the ID of EPS carrying, the configuration module include:

Second selecting unit, for selecting UPF entity；

In addition, the embodiment of the invention also provides a kind of network functional entity, including memory, processor and it is stored in institute State the computer program that can be run on memory and on the processor, wherein the processor executes real when described program Existing following steps:

Selection is used for the SMF entity of data forwarding；

The embodiment of the invention also provides a kind of SMF entity, including memory, processor and it is stored on the memory And the computer program that can be run on the processor, wherein the processor performs the steps of when executing described program

Specifically, shown in Figure 12, the embodiment of the invention also provides a kind of network functional entity, institute's network function is real Body includes bus 121, transceiver 122, antenna 123, bus interface 124, processor 125 and memory 126.

Wherein, processor 125 execute following process for reading the program in memory 126:

The mapping relations of EPS carrying information and PDU session information are obtained, selection is used for the SMF entity of data forwarding, control The mapping relations of EPS carrying information and PDU session information are sent the SMF entity by transceiver 122, by the SMF Entity carries the mapping relations of information and PDU session information, configuration data forwarding tunnel according to the EPS.

Transceiver 122, for sending and receiving data under the control of processor 125.

Specifically, the network functional entity is AMF entity or PGW-C+SMF entity.

Specifically, processor 125 is also used to when data are from 5G system forwards to LTE system: obtaining and need to receive forwarding The mapping relations of the ID of the QoS flow of the ID and PDU session of the EPS carrying of data.

Specifically, the network functional entity is AMF entity, processor 125 is also used to: control transceiver 122 is real from MME Body obtains the ID for needing to receive the EPS carrying of forwarding data.

Specifically, processor 125 is also used to: control transceiver 122 provides needs to be selected and receive to the MME entity to be turned Send out the ID of the EPS carrying of data.

Specifically, processor 125 is also used to: control transceiver 122 needs to carry out data from the NG RAN of 5G system acquisition The QoS flow ID of the PDU session of forwarding, the mapping for obtaining QoS flow ID and EPS the carrying ID of PDU session from PGW-C+SMF entity are closed System is determined and described needs to carry out data forwarding according to the mapping relations of the QoS flow ID of the PDU session and EPS carrying ID The corresponding needs to be selected of the QoS flow ID of PDU session receive the ID of the EPS carrying of forwarding data.

Specifically, processor 125 is also used to when data are forwarded to 5G system from LTE system: obtaining and need to receive forwarding The mapping relations for the ID that the ID and EPS of related QoS flow are carried in the ID of the PDU session of data and the PDU session.

Specifically, the network functional entity is AMF entity, processor 125 is also used to: controlling transceiver 122 from 5G system The NG RAN of system obtains the ID for needing to receive the QoS flow of PDU session of forwarding data.

Specifically, processor 125 is also used to: control transceiver 122 provides needs to be selected and receive to the NG RAN to be turned Send out the ID of the QoS flow of the PDU session of data.

Specifically, processor 125 is also used to: control transceiver 122 needs to carry out data forwarding from the acquisition of MME entity The ID of EPS carrying determines that the needs to be selected receive forwarding according to the ID of the EPS carrying for needing to carry out data forwarding The ID of the QoS flow of the PDU session of data.

Specifically, processor 125 is also used to: the location information based on UE, and/or PDU session relevant to data forwarding Information, selection are used for the SMF entity of data forwarding；Wherein, PDU session relevant to data forwarding is to need to carry out data The PDU session of forwarding, or need to carry out the corresponding PDU session of EPS carrying of data forwarding；The PDU session information includes It is one or more below: network slice information belonging to the corresponding data network title of PDU session and PDU session.

Specifically, the network functional entity is PGW-C+SMF entity, processor 125 is also used to: control transceiver 122 The request message that AMF entity is sent is received, according to the request message, selection is used for the SMF entity of data forwarding.

In addition, network functional entity shown in Figure 12 can also be SMF entity.The network functional entity shown in Figure 12 can also When for SMF entity, following process is can be performed by reading the program in memory 126 in processor 125:

The EPS carrying information that the reception AMF entity of transceiver 122 or PGW-C+SMF entity are sent is controlled to believe with PDU session The mapping relations of breath carry the mapping relations of information and PDU session information, configuration data forwarding tunnel according to the EPS.

Specifically, the EPS carrying information is reflected with PDU session information when data are from 5G system forwards to LTE system Penetrate the mapping relations of the ID of the QoS flow of the ID that relationship is the EPS carrying for needing to receive forwarding data and PDU session, processor 125 Be also used to: selection UPF entity, the core network tunnels for PDU session distribution for data forwarding identify, and it is real to configure the UPF Body and the PDU session tunnel for the forwarding tunnel between the SGW of data forwarding and between the NG RAN of 5G system, according to institute The mapping relations for stating the ID of the ID for the EPS carrying for needing to receive forwarding data and the QoS flow of PDU session, by the PDU session QoS flow is tied to the EPS for needing to receive forwarding data and carries on corresponding forwarding tunnel, enables the UPF entity According to the QoS flow ID of data packet, the data are forwarded a packet on the forwarding tunnel of correct EPS carrying.

Specifically, the EPS carrying information is reflected with PDU session information when data are forwarded to 5G system from LTE system Penetrate ID and the EPS carrying of related QoS flow in the ID and the PDU session that relationship is the PDU session for needing to receive forwarding data ID mapping relations, processor 125 is also used to: selection UPF entity, and the tunnel end of data forwarding is used for for EPS carrying distribution Point identification, and the PDU session tunnel between the UPF entity and the NG RAN of 5G system is configured, it is received and is turned according to the needs The mapping relations for sending out the ID of ID and the EPS carrying of related QoS flow in the ID and the PDU session of the PDU session of data, by institute It states on EPS bearing binding to the corresponding forwarding tunnel of PDU session for needing to receive forwarding data, so that the UPF entity Can be by QoS flow ID correct in the packet marking received from the tunnel that the EPS is carried, and it is forwarded to correct PDU On the forwarding tunnel of session.

In Figure 12, bus architecture (is represented) with bus 121, and bus 121 may include the total of any number of interconnection Line and bridge, the memory that bus 121 will include the one or more processors represented by processor 125 and memory 126 represents Various circuits link together.Bus 121 can also be by such as peripheral equipment, voltage-stablizer and management circuit or the like Various other circuits link together, and these are all it is known in the art, therefore, are no longer further retouched to it herein It states.Bus interface 124 provides interface between bus 121 and transceiver 122.Transceiver 122 can be an element, can also be with It is multiple element, such as multiple receivers and transmitter, the list for communicating over a transmission medium with various other devices is provided Member.The data handled through processor 125 are transmitted on the radio medium by antenna 123, and further, antenna 123 also receives Data simultaneously transfer data to processor 125.

Processor 125 is responsible for management bus 121 and common processing, can also provide various functions, including timing, periphery Interface, voltage adjusting, power management and other control functions.And memory 126 can be used for storage processor 125 and hold Used data when row operation.

Optionally, processor 125 can be CPU, ASIC, FPGA or CPLD.

In addition, it is stored thereon with computer program the embodiment of the invention also provides a kind of computer readable storage medium, It is performed the steps of when described program is executed by processor

Selection is used for the SMF entity of data forwarding；

Optionally, the network functional entity is AMF entity or PGW-C+SMF entity.

Optionally, it when data are from 5G system forwards to LTE system, can also be realized when described program is executed by processor Following steps: the mapping relations of the ID of the ID for the EPS carrying for needing to receive forwarding data and the QoS flow of PDU session are obtained.

Optionally, the network functional entity is AMF entity, can also be realized when described program is executed by processor following Step: it is obtained from MME entity and needs to receive the ID that the EPS of forwarding data is carried.

Optionally, it can also be performed the steps of when described program is executed by processor to be selected to MME entity offer Needs receive forwarding data EPS carrying ID.

Optionally, it can also perform the steps of when described program is executed by processor and be obtained from the NG RAN of 5G system The QoS flow ID for needing to carry out the PDU session of data forwarding, the QoS flow ID and EPS for obtaining PDU session from PGW-C+SMF entity are held The mapping relations for carrying ID determine according to the mapping relations of the QoS flow ID of the PDU session and EPS carrying ID and described need to carry out The corresponding needs to be selected of the QoS flow ID of the PDU session of data forwarding receive the ID of the EPS carrying of forwarding data.

Optionally, it when data are forwarded to 5G system from LTE system, can also be realized when described program is executed by processor Following steps: the ID and EPS of related QoS flow in the ID and the PDU session for the PDU session for needing to receive forwarding data are obtained The mapping relations of the ID of carrying.

Optionally, the network functional entity is AMF entity, can also be realized when described program is executed by processor following Step: the ID for needing to receive the QoS flow of PDU session of forwarding data is obtained from the NG RAN of 5G system.

Optionally, it can also be performed the steps of when described program is executed by processor to be selected to NG RAN offer Needs receive forwarding data PDU session QoS flow ID.

Optionally, it can also be performed the steps of when described program is executed by processor and need to carry out from the acquisition of MME entity The ID of the EPS carrying of data forwarding determines the need to be selected according to the ID of the EPS carrying for needing to carry out data forwarding Receive the ID of the QoS flow of the PDU session of forwarding data.

Optionally, the location information based on UE can also be performed the steps of when described program is executed by processor, and/ Or PDU session information relevant to data forwarding, selection are used for the SMF entity of data forwarding；Wherein, with data forwarding phase The PDU session of pass is the corresponding PDU of EPS carrying for needing to carry out the PDU session of data forwarding, or needing to carry out data forwarding Session；The PDU session information includes following one or more: belonging to the corresponding data network title of PDU session and PDU session Network slice information.

Optionally, the network functional entity is PGW-C+SMF entity, can also be real when described program is executed by processor Existing following steps: receiving the request message that AMF entity is sent, and according to the request message, selection is described for data forwarding SMF entity.

Optionally, when data are from 5G system forwards to LTE system, the EPS carrying information is reflected with PDU session information Penetrate the mapping relations of the ID of the QoS flow of the ID that relationship is the EPS carrying for needing to receive forwarding data and PDU session, described program Selection UPF entity can also be performed the steps of when being executed by processor, and the core of data forwarding is used for for PDU session distribution Net Tunnel Identifier, and configure the UPF entity and for the forwarding tunnel between the SGW of data forwarding and the NG with 5G system PDU session tunnel between RAN, according to the ID and the QoS flow of PDU session of the EPS carrying for needing to receive forwarding data The QoS flow of the PDU session is tied to the EPS for needing to receive forwarding data and carries corresponding turn by the mapping relations of ID It sends out on tunnel, enables the UPF entity according to the QoS flow ID of data packet, the data are forwarded a packet into correct EPS and are held On the forwarding tunnel of load.

Optionally, when data are forwarded to 5G system from LTE system, the EPS carrying information is reflected with PDU session information Penetrate ID and the EPS carrying of related QoS flow in the ID and the PDU session that relationship is the PDU session for needing to receive forwarding data ID mapping relations, can also be performed the steps of when described program is executed by processor selection UPF entity, for EPS carry Distribution is used for the Tunnel End Point Identifier of data forwarding, and configures the PDU session between the UPF entity and the NG RAN of 5G system Tunnel, according to the ID and EPS of related QoS flow in the ID of the PDU session for needing to receive forwarding data and the PDU session The mapping relations of the ID of carrying, by the EPS bearing binding to the corresponding forwarding of PDU session for needing to receive forwarding data On tunnel, enable the UPF entity by correct QoS in the packet marking received from the tunnel that the EPS is carried Stream ID, and be forwarded on the forwarding tunnel of correct PDU session.

Computer-readable medium includes permanent and non-permanent, removable and non-removable media, can be by any side Method or technology realize that information stores.Information can be computer readable instructions, data structure, the module of program or other numbers According to.The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory techniques, CD-ROM are read-only Memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or Other magnetic storage devices or any other non-transmission medium, can be used for storage can be accessed by a computing device information.According to Herein defines, and computer-readable medium does not include temporary computer readable media (transitory media), such as modulation Data-signal and carrier wave.

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.

The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.

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 device (can be mobile phone, computer, clothes Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.

The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims

1. a kind of data relay method is applied to network functional entity characterized by comprising

Obtain the mapping relations of grouping system EPS the carrying information and Packet Data Unit PDU session information of evolution；

Selection is used for the conversation management functional SMF entity of data forwarding；

The SMF entity is sent by the mapping relations of EPS carrying information and PDU session information, by the SMF entity root According to the mapping relations of EPS carrying information and PDU session information, configuration data forwarding tunnel.

2. the method according to claim 1, wherein the network functional entity is core access and mobility pipe Function AMF entity is managed, alternatively, supporting the PGW-C+SMF entity of public data network gateway control face function PGW-C and SMF simultaneously.

3. the method according to claim 1, wherein when data are from the 5th third-generation mobile communication 5G system forwards to length When phase evolution LTE system, the grouping system EPS carrying information for obtaining evolution and Packet Data Unit PDU session information Mapping relations, comprising:

The mapping for obtaining the ID of the mark ID for the EPS carrying for needing to receive forwarding data and the service quality QoS stream of PDU session is closed System.

4. according to the method described in claim 3, the acquisition needs it is characterized in that, the network functional entity is AMF entity Before the mapping relations for receiving the ID of the mark ID of the EPS carrying of forwarding data and the service quality QoS stream of PDU session, institute State method further include:

It is obtained from mobile management function to ps domain MME entity and needs to receive the ID that the EPS of forwarding data is carried.

5. according to the method described in claim 4, it is characterized in that, described obtain from mobile management function to ps domain MME entity needs Before the ID of EPS carrying for receiving forwarding data, the method also includes:

6. according to the method described in claim 5, it is characterized in that, described provide to the MME entity to be selected needs to receive Before the ID of EPS carrying for forwarding data, the method also includes:

The QoS flow ID for needing to carry out the PDU session of data forwarding is obtained from the Next-Generation networking NG RAN of 5G system；

According to the mapping relations of the QoS flow ID of the PDU session and EPS carrying ID, determines and described need to carry out data forwarding The corresponding needs to be selected of the QoS flow ID of PDU session receive the ID of the EPS carrying of forwarding data.

7. described to obtain the method according to claim 1, wherein when data are forwarded to 5G system from LTE system The grouping system EPS of evolution is taken to carry the mapping relations of information and Packet Data Unit PDU session information, comprising:

Obtain ID and the EPS carrying of related QoS flow in the ID and the PDU session for the PDU session for needing to receive forwarding data ID mapping relations.

8. the acquisition needs the method according to the description of claim 7 is characterized in that the network functional entity is AMF entity Receive the mapping of the ID of ID and the EPS carrying of related QoS flow in the ID and the PDU session of the PDU session of forwarding data Before relationship, the method also includes:

9. according to the method described in claim 8, it is characterized in that, described obtain from the NG RAN of 5G system needs to receive forwarding Before the ID of the QoS flow of the PDU session of data, the method also includes:

10. according to the method described in claim 9, it is characterized by: described provide to the NG RAN to be selected needs to receive Before the ID for forwarding the QoS flow of the PDU session of data, the method also includes:

According to the ID of the EPS carrying for needing to carry out data forwarding, determine that the needs to be selected receive the PDU of forwarding data The ID of the QoS flow of session.

11. the method according to claim 1, wherein the selection is used for the conversation management functional of data forwarding SMF entity, comprising:

Location information based on user equipment (UE), and/or PDU session information relevant to data forwarding, selection turn for data The SMF entity of hair；

Wherein, PDU session relevant to data forwarding is to need to carry out the PDU session of data forwarding, or need to carry out data The EPS of forwarding carries corresponding PDU session；

The PDU session information includes following one or more: belonging to the corresponding data network title of PDU session and PDU session Network slice information.

12. the method according to claim 1, wherein the network functional entity is PGW-C+SMF entity, institute State the conversation management functional SMF entity that selection is used for data forwarding, comprising:

Receive the request message that AMF entity is sent；

13. a kind of data relay method is applied to SMF entity characterized by comprising

14. according to the method for claim 13, which is characterized in that described when data are from 5G system forwards to LTE system EPS carrying information and the mapping relations of PDU session information are ID and the PDU session for the EPS carrying for needing to receive forwarding data The mapping relations of the ID of QoS flow, the mapping relations that information and PDU session information are carried according to the EPS, configuration data turn Send out tunnel, comprising:

Select user plane functions UPF entity；

Core network tunnels for PDU session distribution for data forwarding identify, and configure the UPF entity and be used for data forwarding Gateway SGW between forwarding tunnel and the PDU session tunnel between the NG RAN of 5G system；

According to the mapping relations of the ID of the EPS carrying for needing to receive forwarding data and the ID of the QoS flow of PDU session, by institute The QoS flow for stating PDU session is tied to the EPS for needing to receive forwarding data and carries on corresponding forwarding tunnel, so that described UPF entity can forward a packet to the data on the forwarding tunnel of correct EPS carrying according to the QoS flow ID of data packet.

15. according to the method for claim 13, which is characterized in that described when data are forwarded to 5G system from LTE system EPS carrying information and the mapping relations of PDU session information are the ID and the PDU for needing to receive the PDU session of forwarding data The mapping relations of the ID of ID and the EPS carrying of related QoS flow, described to carry information and PDU session letter according to the EPS in session The mapping relations of breath, configuration data forwarding tunnel, comprising:

Select UPF entity；

It is used for the Tunnel End Point Identifier of data forwarding for EPS carrying distribution, and configures the NG RAN of the UPF entity Yu 5G system Between PDU session tunnel；

According to the ID and EPS of related QoS flow in the ID of the PDU session for needing to receive forwarding data and the PDU session The mapping relations of the ID of carrying, by the EPS bearing binding to the corresponding forwarding of PDU session for needing to receive forwarding data On tunnel, enable the UPF entity by correct QoS in the packet marking received from the tunnel that the EPS is carried Stream ID, and be forwarded on the forwarding tunnel of correct PDU session.

16. a kind of data relay device is applied to network functional entity characterized by comprising

Selecting module, for selecting the SMF entity for data forwarding；

First sending module, it is real for sending the SMF for the mapping relations of EPS carrying information and PDU session information Body is carried the mapping relations of information and PDU session information, configuration data forwarding tunnel by the SMF entity according to the EPS.

17. device according to claim 16, which is characterized in that the network functional entity is AMF entity or PGW- C+SMF entity.

18. device according to claim 16, which is characterized in that described when data are from 5G system forwards to LTE system First acquisition module is specifically used for:

19. device according to claim 18, which is characterized in that the network functional entity is AMF entity, described device Further include:

20. device according to claim 19, which is characterized in that described device further include:

Second sending module receives the ID that the EPS of forwarding data is carried for providing needs to be selected to the MME entity.

21. device according to claim 20, which is characterized in that described device further include:

Third obtains module, the QoS flow ID of the PDU session for needing to carry out data forwarding from the NG RAN of 5G system acquisition；

4th obtains module, closes for obtaining the mapping of QoS flow ID and EPS carrying ID of PDU session from PGW-C+SMF entity System；

First determining module determines the need for carrying the mapping relations of ID according to the QoS flow ID and EPS of the PDU session The corresponding needs to be selected of QoS flow ID for carrying out the PDU session of data forwarding receive the ID that the EPS of forwarding data is carried.

22. device according to claim 16, which is characterized in that described when data are forwarded to 5G system from LTE system First acquisition module is specifically used for:

23. device according to claim 22, which is characterized in that the network functional entity is AMF entity, described device Further include:

5th obtains module, the QoS flow of the PDU session for obtaining needs reception forwarding data from the NG RAN of 5G system ID。

24. device according to claim 23, which is characterized in that described device further include:

Third sending module, the QoS flow of the PDU session for providing needs reception forwarding data to be selected to the NG RAN ID。

25. device according to claim 24, which is characterized in that described device further include:

Second determining module determines the needs to be selected for the ID according to the EPS carrying for needing to carry out data forwarding Receive the ID of the QoS flow of the PDU session of forwarding data.

26. device according to claim 16, which is characterized in that the selecting module is specifically used for:

Location information based on UE, and/or PDU session information relevant to data forwarding, selection are described for data forwarding SMF entity；

27. device according to claim 16, which is characterized in that the network functional entity is PGW-C+SMF entity, institute Selecting module is stated to be specifically used for:

The request message that AMF entity is sent is received, and according to the request message, the SMF of the selection for data forwarding is real Body.

28. a kind of data relay device is applied to SMF entity characterized by comprising

Receiving module, for receiving the EPS carrying information and PDU session information that AMF entity or PGW-C+SMF entity are sent Mapping relations；

Configuration module, for carrying the mapping relations of information and PDU session information, configuration data forwarding tunnel according to the EPS.

29. device according to claim 28, which is characterized in that described when data are from 5G system forwards to LTE system EPS carrying information and the mapping relations of PDU session information are ID and the PDU session for the EPS carrying for needing to receive forwarding data The mapping relations of the ID of QoS flow, the configuration module include:

First selecting unit, for selecting UPF entity；

First configuration unit identifies for the core network tunnels for PDU session distribution for data forwarding, and configures the UPF Entity and the PDU session tunnel for the forwarding tunnel between the SGW of data forwarding and between the NG RAN of 5G system；

First binding unit, for the ID and the QoS flow of PDU session according to the EPS carrying for needing to receive forwarding data The QoS flow of the PDU session is tied to the EPS for needing to receive forwarding data and carries corresponding turn by the mapping relations of ID It sends out on tunnel, enables the UPF entity according to the QoS flow ID of data packet, the data are forwarded a packet into correct EPS and are held On the forwarding tunnel of load.

30. device according to claim 28, which is characterized in that described when data are forwarded to 5G system from LTE system EPS carrying information and the mapping relations of PDU session information are the ID and the PDU for needing to receive the PDU session of forwarding data The mapping relations of the ID of ID and the EPS carrying of related QoS flow, the configuration module include: in session

Second selecting unit, for selecting UPF entity；

Second configuration unit, for being used for the Tunnel End Point Identifier of data forwarding for EPS carrying distribution, and it is real to configure the UPF PDU session tunnel between body and the NG RAN of 5G system；

Second binding unit, for according to phase in the ID of the PDU session for needing to receive forwarding data and the PDU session The EPS bearing binding is needed reception to forward data by the mapping relations for closing the ID of ID and the EPS carrying of QoS flow to described On the corresponding forwarding tunnel of PDU session, data that the UPF entity will be received from the tunnel that the EPS is carried Correct QoS flow ID on packet making, and be forwarded on the forwarding tunnel of correct PDU session.

31. a kind of network functional entity, including memory, processor and it is stored on the memory and can be in the processor The computer program of upper operation, which is characterized in that the processor performs the steps of when executing described program

Selection is used for the SMF entity of data forwarding；

The SMF entity is sent by the mapping relations of EPS carrying information and PDU session information, by the SMF entity root According to the mapping relations configuration data forwarding tunnel of EPS carrying information and PDU session information.

32. a kind of SMF entity, including memory, processor and it is stored on the memory and can transports on the processor Capable computer program, which is characterized in that the processor performs the steps of when executing described program

33. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that described program is processed Device performs the steps of when executing

Selection is used for the SMF entity of data forwarding；

34. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that described program is processed Device performs the steps of when executing