CN110324865A - A kind of method and apparatus creating tunnel - Google Patents
A kind of method and apparatus creating tunnel Download PDFInfo
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- CN110324865A CN110324865A CN201810276482.1A CN201810276482A CN110324865A CN 110324865 A CN110324865 A CN 110324865A CN 201810276482 A CN201810276482 A CN 201810276482A CN 110324865 A CN110324865 A CN 110324865A
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- smf
- session
- instruction information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
Abstract
The invention discloses a kind of method and apparatus for creating tunnel to improve the efficiency of communication system for reducing the consumption of tunnel resource.This method comprises: access and mobile management function to ps domain entity A MF determine that UE is carrying out the cross-system switching from 5G network to LTE network；The AMF is carrying out the instruction information of the cross-system switching by the UE is used to indicate, it notifies to give conversation management functional entity SMF, so that the SMF can notify that user-plane function entity UPF is the Evolved Packet System EPS load creating tunnel of the UE according to the indication message.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of method and apparatus for creating tunnel.
Background technique
It referring to Figure 1, is the 5th third-generation mobile communication technology (5Generation, 5G) network and Long-Term Evolution (Long
Term Evolution, LTE) network interoperability scene network architecture diagram, wherein the mobile management entity in LTE network
Access and mobile management function to ps domain entity (Access in (Mobility Management Entity, MME) and 5G network
Control And Mobility Management Function, AMF) between N26 interface be optional support, work as network
When supporting N26 interface, then it can support the switching between 5G network and LTE network, user can be transmitted between MME and AMF and is set
The contextual information (context) of standby (User Equipment, UE), the contextual information may include mobility context and
Session connection context.
When UE access supports the network of N26 interface, network may configure single registration mode for the registration mode of UE
(Single Registration Mode).Wherein, protocol Data Unit (Protocol is established in the UE request of single registration mode
Data Unit, PDU) session (Session) when, receive the control plane packet data of the PDU session establishment request message of UE
Gateway and conversation management functional entity (Packet Data Network Gateway-Control+Session Management
Function, PGW-C+SMF), Evolved Packet System (Evolved Packet Core System, EPS) will be requested to AMF
Carry the distribution of (bearer) mark (Identity, ID)；Alternatively, when PGW-C+SMF determines the PDU session for needing to be serviced
Service (Quality of Service, QoS) stream (flow) when being mapped to a new EPS bearer, PGW-C+SMF
Distribution to AMF request EPS bearer ID.If AMF is at distribution of work EPS bearer ID and is supplied to PGW-C+SMF, if
It is that the PDU session of PGW-C+SMF service has used the roaming of ownership place routing (home route) mode, then PGW-C+SMF is needed
It will be to user plane packets data gateway and user-plane function entity (Packet Data Network Gateway-User+
User Plane Function, PGW-U+UPF) N4 message is sent, to request the tunnel of PGW-U+UPF creation EPS bearer,
So that UE, in the cross-system handoff procedure from 5G network to LTE network, PGW-U+UPF can be correctly from gateway
The data packet of (Serving GateWay, SGW) reception UE.
But as procedure described above, as long as UE establishes PDU session or 5G network side to being established in 5G network side
When PDU session is modified, as long as PGW-C+SMF receives new EPS bearer ID from AMF, always PGW-C+SMF is wanted
Seeking PGW-U+UPF is the EPS bearer creation tunnel that QoS flow mapping generates in the PDU session established or modified, also
It is to say, no matter whether UE can occur cross-system switching, and PGW-U+UPF always can be the double transmission money of every PDU session distribution
Source, the i.e. tunnel resource of 5G network side and LTE network side reduce the capacity of UPF to cause the waste of tunnel resource.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus for creating tunnel, for reducing the consumption of tunnel resource, improves
The efficiency of communication system.
In a first aspect, a kind of method for creating tunnel is provided, this method comprises:
AMF determines that UE is carrying out the cross-system switching from 5G network to LTE network；
The AMF is carrying out the instruction information of the cross-system switching by the UE is used to indicate, notice to SMF, with
Enable the SMF according to the indication message, notifies that UPF is the EPS load creating tunnel of the UE.
In embodiments of the present invention, AMF, just can be by the finger of cross-system switching when determining that UE is carrying out cross-system switching
Show that information is sent to SMF, in this way, SMF is just notified that UPF is the EPS load creating tunnel of the UE, therefore, only determines UE hair
The tunnel of LTE network side can be created for it by having given birth to cross-system switching, i.e., without creating double for each PDU session of UE
Tunnel improves the capacity of UPF to reduce the consumption of tunnel resource, and then improves the efficiency of communication system.
Optionally, the AMF determines that the UE is carrying out the cross-system switching from 5G network to LTE network, comprising:
The AMF receives the switching request that wireless access network (Radio Access Network, RAN) equipment is sent
(Handover Required, HO Required) message, the Handover Required message carry the instruction letter
Breath；
The AMF determines that the UE is carrying out the cross-system switching according to the Handover Required message.
Optionally, the AMF will be used to indicate the UE and carrying out the instruction information of the cross-system switching, and notice is given
The SMF, comprising:
The AMF carries the instruction information in session management messages, is sent to the SMF；Alternatively,
The AMF carries the instruction information in session management messages, and it is real to be sent to visited place conversation management functional
Body (Visited Public Land Mobile Network-SMF, V-SMF) or intermediate session management function entity
(Intermediate-SMF, I-SMF), so that the V-SMF or I-SMF passes through session updates request message, it will
The instruction information is notified to the SMF.
In embodiments of the present invention, AMF notify SMF instruction information mode can there are many, it can directly will instruction
Information is sent to SMF, can also be sent to SMF by V-SMF or I-SMF, advice method is more diversified.
Optionally, the EPS carrying is the QoS flow in the protocol Data Unit PDU session serviced by the SMF
It maps.
Second aspect provides a kind of method for creating tunnel, this method comprises:
SMF receives the instruction information for being used to indicate the cross-system switching that UE is being carried out from 5G network to LTE network；
The SMF determines that the UE is carrying out the cross-system switching according to the instruction information；
The EPS load creating tunnel that the SMF notice UPF is the UE.
In embodiments of the present invention, SMF just may require that UPF is the UE's when determining that UE is carrying out cross-system switching
Therefore EPS load creating tunnel only determines that UE has occurred cross-system switching just and can create the tunnel of LTE network side for it, i.e.,
Double tunnel, which is created, without each PDU session for UE improves the capacity of UPF to reduce the consumption of tunnel resource,
And then improve the efficiency of communication system.
Optionally, the SMF reception is used to indicate the cross-system that the UE is being carried out from 5G network to LTE network and switches
Instruction information, comprising:
The SMF equipment receives the session management messages that AMF is sent, and the session management messages carry the instruction letter
Breath；Alternatively,
The SMF equipment receives the session updates request message that V-SMF or I-SMF is sent, the session updates request
Message is that the V-SMF or I-SMF is sent to the SMF after receiving the session management messages that the AMF is sent
, wherein the session updates request message carries the instruction information.
Optionally, the EPS load creating tunnel that the SMF notice UPF is the UE, comprising:
The SMF initiates session establishment or session modification process on N4 interface, is the UE's to request the UPF
EPS load creating tunnel made of QoS flow mapping in PDU session.
The third aspect provides a kind of access and mobile management function to ps domain entity A MF, comprising:
Memory, for storing instruction；
Processor executes following process for reading the instruction in the memory:
Determine that UE is carrying out the cross-system switching from 5G network to LTE network；
To be used to indicate the UE and carrying out the instruction information of the cross-system switching by transceiver, notice to SMF,
So that the SMF can notify that UPF is the EPS load creating tunnel of the UE according to the indication message；
The transceiver, for the sending and receiving data under the control of the processor.
Optionally, the processor, is specifically used for:
The Handover Required message sent by the transceiver RAN equipment, the Handover
Required message carries the instruction information；
Determine that the UE is carrying out the cross-system switching according to the Handover Required message.
Optionally, the processor, is specifically used for:
The instruction information is carried in session management messages, the SMF is sent to by the transceiver；Alternatively,
The instruction information is carried in session management messages, V-SMF or I- are sent to by the transceiver
SMF, so that the V-SMF or I-SMF is notified the instruction information to described by session updates request message
SMF。
Optionally, the EPS carrying is that the QoS flow in the PDU session serviced by the SMF maps.
Fourth aspect provides a kind of conversation management functional entity SMF, comprising:
Memory, for storing instruction；
Processor executes following process for reading the instruction in the memory:
The instruction letter for the cross-system switching that UE is being carried out from 5G network to LTE network is used to indicate by transceiver
Breath；
Determine that the UE is carrying out the cross-system switching according to the instruction information；
Notify that UPF is the EPS load creating tunnel of the UE by the transceiver；
The transceiver, for the sending and receiving data under the control of the processor.
Optionally, the processor, is specifically used for:
The session management messages sent by the transceiver AMF, the session management messages carry the instruction
Information；Alternatively,
The session updates request message sent by the transceiver V-SMF or I-SMF, the session updates are asked
Seeking message is described in the V-SMF or I-SMF is sent to after receiving the session management messages that the AMF is sent
SMF's, wherein the session updates request message carries the instruction information.
Optionally, the processor, is specifically used for:
The session establishment or session modification process on N4 interface are initiated, is the PDU session of the UE to request the UPF
In QoS flow mapping made of EPS load creating tunnel.
5th aspect provides a kind of access and mobile management function to ps domain entity A MF, comprising:
Determination unit, for determining that UE is carrying out the cross-system switching from 5G network to LTE network；
Transmit-Receive Unit, the instruction information of the cross-system switching is being carried out for that will be used to indicate the UE, and notice is given
SMF, so that the SMF can notify that UPF is the EPS load creating tunnel of the UE according to the indication message.
Optionally, the determination unit, is specifically used for:
The Handover Required message that RAN equipment is sent is received, the Handover Required message carries
The instruction information；
Determine that the UE is carrying out the cross-system switching according to the Handover Required message.
Optionally, the Transmit-Receive Unit, is specifically used for:
The instruction information is carried in session management messages, the SMF is sent to；Alternatively,
The instruction information is carried in session management messages, V-SMF or I-SMF is sent to, so that the V-
The SMF or I-SMF is notified the instruction information to the SMF by session updates request message.
Optionally, the EPS carrying is that the QoS flow in the PDU session serviced by the SMF maps.
6th aspect, provides a kind of conversation management functional entity SMF, comprising:
Transmit-Receive Unit, for receiving the finger for being used to indicate the cross-system switching that UE is being carried out from 5G network to LTE network
Show information；
Determination unit, for determining that the UE is carrying out the cross-system switching according to the instruction information；
The Transmit-Receive Unit, the EPS load creating tunnel for being also used to that UPF is notified to be the UE.
Optionally, the Transmit-Receive Unit, is specifically used for:
The session management messages that AMF is sent are received, the session management messages carry the instruction information；Alternatively,
The session updates request message that V-SMF or I-SMF is sent is received, the session updates request message is the V-
The SMF or I-SMF is sent to the SMF's after receiving the session management messages that the AMF is sent, wherein described
Session updates request message carries the instruction information.
Optionally, the Transmit-Receive Unit, is specifically used for:
The session establishment or session modification process on N4 interface are initiated, is the PDU session of the UE to request the UPF
In QoS flow mapping made of EPS load creating tunnel.
7th aspect, provides a kind of computer readable storage medium, comprising:
The computer-readable recording medium storage has computer instruction, when the computer instruction is run on computers
When, so that computer executes the method as described in first aspect or second aspect.
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, attached drawing described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the network architecture diagram of 5G network and LTE network interoperability scene in the prior art；
Fig. 2 is the flow diagram of the method in creation tunnel provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of AMF provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of SMF provided in an embodiment of the present invention；
Fig. 5 is another structural schematic diagram of AMF provided in an embodiment of the present invention；
Fig. 6 is another structural schematic diagram of SMF provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
The technical background of the embodiment of the present invention is described below.
As long as being repaired currently, UE establishes PDU session or 5G network side in 5G network side to the PDU session established
When changing, as long as PGW-C+SMF receives new EPS bearer ID from AMF, always PGW-C+SMF requires the PGW-U+UPF to be
Establish or modification PDU session mapping generate EPS bearer create tunnel, that is to say, that no matter UE whether can occur across
System switching, PGW-U+UPF can distribute double transfer resource, i.e. 5G network side and LTE network side always for every PDU session
Tunnel resource reduce the capacity of UPF to cause the waste of tunnel resource.
In consideration of it, the embodiment of the present invention provides a kind of method for creating tunnel, in the method, AMF is determining UE
When carrying out cross-system switching, just the instruction information that cross-system switches can be sent to SMF, in this way, SMF is just notified that UPF is to be somebody's turn to do
Therefore the EPS load creating tunnel of UE only determines that UE has occurred cross-system switching just and can create the tunnel of LTE network side for it
Road creates double tunnel without each PDU session for UE and improves UPF's to reduce the consumption of tunnel resource
Capacity, and then improve the efficiency of communication system.
Technical solution provided in an embodiment of the present invention is introduced with reference to the accompanying drawing.
Fig. 2, a kind of method creating tunnel provided in an embodiment of the present invention are referred to, this method can be applied to Fig. 1 institute
In the network architecture shown, the process of this method is described as follows.
S1:RAN equipment sends HO Required message to AMF, and AMF receives HO Required message.
In the embodiment of the present invention, when the network for providing service for UE needs by 5G network switching to be LTE network, then
UE is carried out in the preparation process of cross-system switching, and the RAN equipment of the UE access can send HO Required message to AMF, should
The instruction information for being used to indicate the switching that the UE is being carried out from 5G network to LTE network is carried in HO Required message.
Wherein, RAN equipment can be the RAN equipment of 5G network, i.e. the next generation (Next Generation, NG) RAN is set
It is standby.
S2:AMF determines that UE is carrying out cross-system switching according to HO Required message.
In the embodiment of the present invention, switching type can be carried in the HO Required message that RAN equipment is sent, and switch class
Type be, for example, it is above-mentioned described switch slave the cross-system of 5G network to LTE network, then AMF then may be used according to HO Required message
To determine that UE is carrying out the cross-system switching from 5G network to LTE network.
In the embodiment of the present invention, AMF is after determining that UE is carrying out cross-system switching, in order to carry out cross-system switching
The data packet of UE later can also be properly received by UPF, need in LTE network side to be that the UE establishes corresponding transmission tunnel,
Therefore AMF needs to notify the instruction information for being used to indicate UE and carrying out cross-system switching to SMF, to create for the UE
The transmission tunnel of LTE network side.
Wherein, AMF will indicate information notifies to include following at least two embodiment to SMF, not based on advice method
Together, subsequent process would also vary from, therefore will specifically be described for different embodiments below.
The first embodiment is as shown in process in the solid box in Fig. 2.
S3:AMF will send session management messages to SMF, and SMF receives session management messages.
In the embodiment of the present invention, AMF can be carried instruction information in session management messages (PDU Session
Context Request) in be sent to SMF.
Specifically, the quantity of UE currently ongoing PDU session may have multiple, different PDU sessions to provide for it
The SMF of service may be different, and for each of them PDU session, AMF can call the Nsmf_ of SMF serve it
PDUSession_ContextRequest service sends session management messages to SMF, and carries and refer in session management messages
Show information, which is used to indicate the cross-system that UE is being carried out from 5G network to LTE network and switches.Wherein, session pipe
Reason message is for requesting session management (Session management, the SM) context, SM of SMF by the PDU session of UE
Context includes EPS bearer context, EPS the bearer context of the PDU session of UE for evolution block core
The creation that the MME of the side net (Evolved Packet Core, EPC) is carried.Due to being obtained by context request message request
SM context is taken to belong to the scope of the prior art, therefore details are not described herein.
Wherein, SMF involved in the embodiment of the present invention can be the PGW-C+SMF in network architecture diagram shown in FIG. 1, with
And the subsequent UPF being related to may be the PGW-U+UPF in network architecture diagram shown in FIG. 1, it is subsequent by it will not be described.
S4:SMF determines that UE is carrying out cross-system switching according to instruction information.
SMF is after the session management messages for receiving AMF transmission, if carrying above-mentioned instruction letter in session management messages
Breath, then SMF can be cut according to the cross-system that the instruction information wherein carried determines that UE is being carried out from 5G network to LTE network
It changes, i.e. SMF, which can be determined, to be needed to create corresponding transmission tunnel in LTE network side for the UE PDU session for providing service for itself
Road.Wherein, made of the QoS flow mapping in the PDU session that the transmission tunnel of LTE network side creation is serviced by SMF
The transmission tunnel of EPS bearer.
If not carrying above-mentioned instruction information in the received session management messages of SMF, then SMF is not notified that UPF carries out tunnel
The creation in road.
S5:SMF initiates session establishment or session modification (Session Modification) process on N4 interface.
In the embodiment of the present invention, SMF can be by initiating session establishment or session modification process on N4 interface, to ask
EPS bearer made of the QoS flow mapping that UPF is the PDU session of SMF service is asked to create tunnel.
S6:SMF sends session management response message to AMF, and AMF receives session management response message.
After SMF receives session management messages, SMF can be to AMF feeding back conversation managing response message (PDU
Session Context Reponse), to notify AMF that session management messages have been received in oneself.Alternatively, initiated in SMF
N4Session Modification process terminates, i.e. after UPF creates tunnel completion, SMF can be to AMF feeding back conversation management
Response message, and carried in the session management response message and be used to indicate the information that creation tunnel is completed, so that AMF knows this
The tunnel of EPS bearer made of QoS flow mapping in the PDU session of SMF service has created completion.
Second of embodiment is as shown in process in the dotted line frame in Fig. 2.
S7:AMF will perhaps I-SMF transmission session management messages V-SMF or I-SMF reception session management disappears to V-SMF
Breath.
In the embodiment of the present invention, when PDU session has used home route roaming mode or among network support
When SMF, instruction information carrying can be sent to V-SMF or I-SMF by AMF in session management messages.
Specifically, the quantity of UE currently ongoing PDU session may have multiple, different PDU sessions to provide for it
The SMF of service may be different, and for each of them PDU session, AMF can call the Nsmf_ of V-SMF or I-SMF
PDUSession_ContextRequest service sends session management messages to V-SMF or I-SMF, and disappears in session management
Instruction information is carried in breath, which is used to indicate the cross-system that UE is being carried out from 5G network to LTE network and switches.Its
In, context request message can be used for mapped EPS made of the mapping of the QoS flow in request PDU session
The creation that bearer context, mapped EPS bearer context are carried for the MME of the side EPC.
S8:V-SMF or I-SMF sends session updates request message to SMF, and SMF receives session updates request message.
In the embodiment of the present invention, after V-SMF or I-SMF receive the session management messages of AMF transmission, if session
It manages and carries instruction information in message, then V-SMF or I-SMF can determine that UE is being carried out from 5G network to LTE network
Cross-system switching, then perhaps I-SMF can be determined and needed to give the cross-system switching notice to SMF then V-SMF or I- V-SMF
SMF can carry instruction information in session updates request message, SMF is sent to, with the PDU for notifying SMF to need it for UE
EPS bearer made of QoS flow mapping in session creates tunnel.
In the session management messages that V-SMF or I-SMF are received, if not carrying instruction information, then V-SMF or I-
SMF is not necessarily to send session updates request message to SMF, or without carrying in the session updates request message for being sent to SMF
Indicate information.
S9:SMF determines that UE is carrying out cross-system switching according to instruction information.
The SMF instruction information that session updates request message carries based on the received, can determine that UE is being carried out from 5G net
The cross-system of network to LTE network switches, i.e. SMF, which can be determined, to be needed to provide the PDU session of service in LTE net for the UE for itself
Network side creates corresponding tunnel.It wherein, is the QoS in the PDU session serviced by SMF in the tunnel of LTE network side creation
The tunnel that EPS bearer made of flow mapping is created.
S10:SMF initiates session establishment or session modification process on N4 interface.
In the embodiment of the present invention, SMF can be by initiating session establishment or session modification process on N4 interface, to ask
EPS bearer made of the QoS flow mapping in the PDU session that UPF is SMF service is asked to create tunnel.
To V-SMF, perhaps I-SMF sends session updates response message V-SMF or I-SMF reception session more to S11:SMF
New response message.
After SMF receives session updates request message, SMF can be updated to V-SMF I-SMF feeding back conversation to be responded
Message, to notify AMF oneself that session updates request message has been received.Alternatively, the N4Session initiated in SMF
Modification process terminates, i.e. after UPF creates tunnel completion, SMF can be to V-SMF I-SMF feeding back conversation more
New response message, and can be carried in the session updates response message and be used to indicate the information that creation tunnel is completed, so as to
The V-SMF or I-SMF notice tunnel AMF has created completion.
S12:V-SMF or I-SMF sends session management response message to AMF, and AMF receives session management response message.
In the embodiment of the present invention, V-SMF or I-SMF, then can be to AMF after receiving session updates response message
Feeding back conversation managing response message.
In conclusion the embodiment of the present invention is completed EPS in the preparation process that cross-system switches and is held in the embodiment of the present invention
The foundation in the user face tunnel of load will not have an impact the subsequent data receiver of UE, ensure that the communication quality of user, and
And the condition in the tunnel carried EPS made of the mapping of UPF creation PDU session is limited, i.e., only determining UE
Cross-system switching just can be its tunnel for creating LTE network side, i.e., create double tunnel without each PDU session for UE
Road improves the capacity of UPF to reduce the consumption of tunnel resource, and then improves the efficiency of communication system.
In the embodiment of the present invention, in order to facilitate the description of whole flow process, process shown in Fig. 2 is held AMF and SMF
Capable method mixing is described, but it is understood that, AMF and SMF can independently execute corresponding method and step.
Fig. 3 is referred to, based on the same inventive concept, the embodiment of the present invention also provides a kind of AMF, and AMF includes memory
301, processor 302 and transceiver 303.Wherein, memory 301 and transceiver 303 can pass through bus interface and processor 302
Be connected (Fig. 3 is as example), or can also be connect by special connecting line with processor 302.
Wherein, memory 301 can be used for storing program, and transceiver 303 is for receiving and dispatching number under the control of processor 302
According to.Processor 302 can be used for reading the program in memory 301, execute following process:
Determine that UE is carrying out the cross-system switching from 5G network to LTE network；
It will be used to indicate UE and carrying out the instruction information of cross-system switching by transceiver 303, notifies to SMF, so that
Obtaining SMF can notify that UPF is the EPS load creating tunnel of UE according to indication message；
Optionally, processor 302 are specifically used for:
The Handover Required message that RAN equipment is sent, Handover Required are received by transceiver 303
Message carries instruction information；
Determine that UE is carrying out cross-system switching according to Handover Required message.
Optionally, processor 302 are specifically used for:
Instruction information is carried in session management messages, SMF is sent to by transceiver 303；Alternatively,
Instruction information is carried in session management messages, V-SMF or I-SMF are sent to by transceiver 303, so that
V-SMF or I-SMF is obtained by session updates request message, instruction information is notified to SMF.
Optionally, EPS carrying is that the QoS flow in the PDU session serviced by SMF maps.
Wherein, in Fig. 3, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor 302
The various circuits for the memory that the one or more processors and memory 301 of representative represent link together.Bus architecture is also
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can be linked together, these are all
It is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 303 can
To be multiple element, that is, includes transmitter and transceiver, the list for communicating over a transmission medium with various other devices is provided
Member.Processor 302, which is responsible for management bus architecture and common processing, memory 301, can store processor 302 and is executing operation
When used data.
Refer to Fig. 4, based on the same inventive concept, the embodiment of the present invention provides a kind of SMF, SMF include: memory 401,
Processor 402 and transceiver 403.Wherein, memory 401 and transceiver 403 can be connected by bus interface with processor 402
It connects (Fig. 4 is as example), or can also be connect by special connecting line with processor 402.
Wherein, memory 401 can be used for storing program, and transceiver 403 can receive and dispatch number under the control of processor 402
According to.Processor 402 executes following process for reading the instruction in memory 401:
The finger for being used to indicate the cross-system switching that UE is being carried out from 5G network to LTE network is received by transceiver 403
Show information；
Determine that UE is carrying out cross-system switching according to instruction information；
Notify that UPF is the EPS load creating tunnel of UE by transceiver 403.
Optionally, processor 402 are specifically used for:
The session management messages that AMF is sent are received by transceiver 403, session management messages carry instruction information；Alternatively,
The session updates request message that V-SMF or I-SMF is sent is received by transceiver 403, session updates request disappears
Breath is that V-SMF or I-SMF is sent to SMF's after the session management messages for receiving AMF transmission, wherein session updates are asked
Message is asked to carry instruction information.
Optionally, processor 402 are specifically used for:
The session establishment or session modification process on N4 interface are initiated, to request UPF for the QoS in the PDU session of UE
EPS load creating tunnel made of flow mapping.
Wherein, in Fig. 4, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor 402
The various circuits for the memory that the one or more processors and memory 401 of representative represent link together.Bus architecture is also
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can be linked together, these are all
It is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 403 can
To be multiple element, that is, includes transmitter and transceiver, the list for communicating over a transmission medium with various other devices is provided
Member.Processor 402, which is responsible for management bus architecture and common processing, memory 401, can store processor 402 and is executing operation
When used data.
Fig. 5 is referred to, based on the same inventive concept, the embodiment of the present invention provides a kind of AMF, comprising:
First determination unit 501, for determining that UE is carrying out the cross-system switching from 5G network to LTE network；
First Transmit-Receive Unit 502, the instruction information of cross-system switching is being carried out for that will be used to indicate UE, and notice is given
SMF, so that SMF can notify that UPF is the EPS load creating tunnel of UE according to indication message.
Optionally, the first determination unit 501, is specifically used for:
The Handover Required message that RAN equipment is sent is received, Handover Required message carries instruction
Information；
Determine that UE is carrying out cross-system switching according to Handover Required message.
Optionally, the first Transmit-Receive Unit 502, is specifically used for:
Instruction information is carried in session management messages, SMF is sent to.
Optionally, the first Transmit-Receive Unit 502, is specifically used for:
Will instruction information carry in session management messages, be sent to V-SMF perhaps I-SMF so that V-SMF or I-
SMF is notified instruction information to SMF by session updates request message.
Optionally, EPS carrying is that the QoS flow in the PDU session serviced by SMF maps.
AMF can be used for executing the method that the side AMF executes in embodiment shown in Fig. 2, therefore, for each function of AMF
The function etc. that module can be realized can refer to the description of embodiment shown in Fig. 2, seldom repeat.
Fig. 6 is referred to, based on the same inventive concept, the embodiment of the present invention provides a kind of SMF, comprising:
Second Transmit-Receive Unit 601 is used to indicate the cross-system that UE is being carried out from 5G network to LTE network and cuts for receiving
The instruction information changed；
Second determination unit 602, for determining that UE is carrying out cross-system switching according to instruction information；
Second Transmit-Receive Unit 601, the EPS load creating tunnel for being also used to that UPF is notified to be UE.
Optionally, the second Transmit-Receive Unit 601, is specifically used for:
The session management messages that AMF is sent are received, session management messages carry instruction information；Alternatively,
Receive V-SMF perhaps I-SMF send session updates request message session updates request message be V-SMF or
I-SMF is sent to SMF's after the session management messages for receiving AMF transmission, wherein session updates request message carries instruction
Information.
Optionally, the second Transmit-Receive Unit 601, is specifically used for:
The session establishment or session modification process on N4 interface are initiated, to request UPF for the QoS in the PDU session of UE
EPS load creating tunnel made of flow mapping.
SMF can be used for executing method performed by the side SMF in embodiment shown in Fig. 2, therefore, for each function of SMF
The function etc. that energy module can be realized can refer to the description of embodiment shown in Fig. 2, seldom repeat.
Based on the same inventive concept, the embodiment of the present invention provides a kind of computer readable storage medium, and the computer can
It reads storage medium and is stored with computer instruction, when the computer instruction is run on computers, so that computer executes such as
The method in the creation tunnel that embodiment illustrated in fig. 2 provides.
In the specific implementation process, computer readable storage medium includes: general serial bus USB
(Universal Serial Bus flash drive, USB), mobile hard disk, read-only memory (Read-Only Memory,
ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. are various can store program
The storage medium of code.
In embodiments of the present invention, it should be understood that disclosed device and method, it can be real by another way
It is existing.For example, apparatus embodiments described above are merely indicative, for example, the division of the unit or unit, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of equipment or unit
It connects, can be electrical or other forms.
Each functional unit in embodiments of the present invention can integrate in one processing unit or each unit can also
To be independent physical module.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the embodiment of the present invention
All or part can be embodied in the form of software products, which is stored in a storage medium
In, including some instructions use so that a computer equipment, such as can be personal computer, server or network are set
Standby etc. or processor (processor) performs all or part of the steps of the method described in the various embodiments of the present invention.And it is above-mentioned
Storage medium include: general serial bus USB (universal serial bus flash drive), mobile hard disk,
The various media that can store program code such as ROM, RAM, magnetic or disk.
The above, above embodiments are only described in detail to the technical solution to the application, but the above implementation
The method that the explanation of example is merely used to help understand the embodiment of the present invention, should not be construed as the limitation to the embodiment of the present invention.This
Any changes or substitutions that can be easily thought of by those skilled in the art, should all cover the embodiment of the present invention protection scope it
It is interior.
Claims (17)
1. a kind of method for creating tunnel characterized by comprising
Access and mobile management function to ps domain entity A MF determine that UE is carrying out the cross-system switching from 5G network to LTE network；
The AMF is carrying out the instruction information of the cross-system switching by the UE is used to indicate, and notice gives session management function
Energy entity SMF, so that the SMF can notify that user-plane function entity UPF is described according to the indication message
The Evolved Packet System EPS load creating tunnel of UE.
2. the method as described in claim 1, which is characterized in that the AMF determines that the UE is being carried out from 5G network to LTE
The cross-system of network switches, comprising:
The AMF receives the switching request Handover Required message that wireless access network RAN equipment is sent, described
Handover Required message carries the instruction information；
The AMF determines that the UE is carrying out the cross-system switching according to the Handover Required message.
3. method according to claim 1 or 2, which is characterized in that the AMF will be used to indicate the UE carrying out it is described
The instruction information of cross-system switching, notifies to the SMF, comprising:
The AMF carries the instruction information in session management messages, is sent to the SMF；Alternatively,
The AMF carries the instruction information in session management messages, is sent to visited place conversation management functional entity V-
SMF perhaps intermediate session management function entity I-SMF so that the V-SMF or I-SMF pass through session updates request
Message notifies the instruction information to the SMF.
4. method according to claim 1 or 2, which is characterized in that the EPS carrying is the agreement serviced by the SMF
Service flow QoS flow in data cell PDU session maps.
5. a kind of method for creating tunnel characterized by comprising
SMF receives the instruction information for being used to indicate the cross-system switching that UE is being carried out from 5G network to LTE network；
The SMF determines that the UE is carrying out the cross-system switching according to the instruction information；
The EPS load creating tunnel that the SMF notice UPF is the UE.
6. method as claimed in claim 5, which is characterized in that the SMF reception is used to indicate the UE and is carrying out from 5G
The instruction information that the cross-system of network to LTE network switches, comprising:
The SMF equipment receives the session management messages that AMF is sent, and the session management messages carry the instruction information；Or
Person,
The SMF equipment receives the session updates request message that V-SMF or I-SMF is sent, the session updates request message
It is sent to the SMF after receiving the session management messages that the AMF is sent for the V-SMF or I-SMF,
In, the session updates request message carries the instruction information.
7. such as method described in claim 5 or 6, which is characterized in that the EPS load creating that the SMF notice UPF is the UE
Tunnel, comprising:
The SMF initiates session establishment or session modification process on N4 interface, is the PDU of the UE to request the UPF
EPS load creating tunnel made of QoS flow mapping in session.
8. a kind of access and mobile management function to ps domain entity A MF characterized by comprising
Memory, for storing instruction；
Processor executes following process for reading the instruction in the memory:
Determine that UE is carrying out the cross-system switching from 5G network to LTE network；
It will be used to indicate the UE and carrying out the instruction information of the cross-system switching by transceiver, notifies to SMF, so that
Obtaining the SMF can notify that UPF is the EPS load creating tunnel of the UE according to the indication message；
The transceiver, for the sending and receiving data under the control of the processor.
9. AMF as claimed in claim 8, which is characterized in that the processor is specifically used for:
The Handover Required message sent by the transceiver RAN equipment, the Handover
Required message carries the instruction information；
Determine that the UE is carrying out the cross-system switching according to the Handover Required message.
10. AMF as claimed in claim 8 or 9, which is characterized in that the processor is specifically used for:
The instruction information is carried in session management messages, the SMF is sent to by the transceiver；Alternatively,
The instruction information is carried in session management messages, V-SMF or I-SMF are sent to by the transceiver, with
So that the V-SMF or I-SMF is notified the instruction information to the SMF by session updates request message.
11. AMF as claimed in claim 8 or 9, which is characterized in that the EPS carrying is the PDU meeting serviced by the SMF
QoS flow in words maps.
12. a kind of conversation management functional entity SMF characterized by comprising
Memory, for storing instruction；
Processor executes following process for reading the instruction in the memory:
The instruction information for the cross-system switching that UE is being carried out from 5G network to LTE network is used to indicate by transceiver；
Determine that the UE is carrying out the cross-system switching according to the instruction information；
Notify that UPF is the EPS load creating tunnel of the UE by the transceiver；
The transceiver, for the sending and receiving data under the control of the processor.
13. SMF as claimed in claim 12, which is characterized in that the processor is specifically used for:
The session management messages sent by the transceiver AMF, the session management messages carry the instruction information；
Alternatively,
The session updates request message sent by the transceiver V-SMF or I-SMF, the session updates request disappear
Breath is that the V-SMF or I-SMF is sent to the SMF after receiving the session management messages that the AMF is sent,
Wherein, the session updates request message carries the instruction information.
14. the SMF as described in claim 12 or 13, which is characterized in that the processor is specifically used for:
The session establishment or session modification process on N4 interface are initiated, to request in the PDU session that the UPF is the UE
EPS load creating tunnel made of QoS flow mapping.
15. a kind of access and mobile management function to ps domain entity A MF characterized by comprising
Determination unit, for determining that UE is carrying out the cross-system switching from 5G network to LTE network；
Transmit-Receive Unit is carrying out the instruction information of the cross-system switching for that will be used to indicate the UE, notifies to SMF,
So that the SMF can notify that UPF is the EPS load creating tunnel of the UE according to the indication message.
16. a kind of conversation management functional entity SMF characterized by comprising
Transmit-Receive Unit, for receiving the instruction letter for being used to indicate the cross-system switching that UE is being carried out from 5G network to LTE network
Breath；
Determination unit, for determining that the UE is carrying out the cross-system switching according to the instruction information；
The Transmit-Receive Unit, the EPS load creating tunnel for being also used to that UPF is notified to be the UE.
17. a kind of computer readable storage medium, it is characterised in that:
The computer-readable recording medium storage has computer instruction, when the computer instruction is run on computers,
So that computer executes such as method of any of claims 1-7.
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| WO2015160329A1 (en) * | 2014-04-15 | 2015-10-22 | Nokia Solutions And Networks Oy | Interworking with bearer-based system |
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