CN109040327A - A kind of distribution method and device of IP address of mobile terminal - Google Patents
A kind of distribution method and device of IP address of mobile terminal Download PDFInfo
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- CN109040327A CN109040327A CN201710431602.6A CN201710431602A CN109040327A CN 109040327 A CN109040327 A CN 109040327A CN 201710431602 A CN201710431602 A CN 201710431602A CN 109040327 A CN109040327 A CN 109040327A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000000977 initiatory effect Effects 0.000 claims abstract description 22
- 230000005484 gravity Effects 0.000 claims abstract description 18
- 238000010295 mobile communication Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007726 management method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000013523 data management Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
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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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
-
- 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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of distribution method of IP address of mobile terminal and devices, it is related to mobile communication technology field, its method includes: when 5G core net Core is registered and is assigned with switching or gravity treatment of the mobile terminal of IP address from 5G to 4G, and the mobile terminal judges whether current 4G network supports Nx mouthfuls；When the mobile terminal judges Nx mouthfuls of current 4G network support, normal initiating updating of tracking area process；When the mobile terminal judges that current 4G network does not support Nx mouthfuls, foundation request is connected with public data network PDN by directly initiating switching type attachment, the IP address for distributing 4G network mobile terminal is consistent with the IP address that mobile terminal is distributed when 5G Core is registered.
Description
Technical field
The present invention relates to mobile communication technology field, in particular to the distribution method and dress of a kind of IP address of mobile terminal
It sets.
Background technique
During the deployment of the mobile communication system in the 5th generation, in order to customer service experience continuity, 5G Core and
Interoperability between EPC (Evolved Packet Core, evolution block core net) network, it is essential.5G system and 4G
It interoperates between EPC/UTRAN (UMTS Terrestrial Radio Access Network, UMTS Terrestrial radio access network)
The network architecture as shown in Figure 1, in 5G Core be responsible for access and mobile management AMF (Access and Mobility
Management Function, access and mobile management function to ps domain) and 4G mobile management entity MME (Mobility
Management Entity, mobile management entity) between can be mutual by Nx oral sex, moved between 4G and 5G convenient for user
When switch over or gravity treatment, guarantee customer service continuity.
In actual deployment, Nx mouthfuls are that optionally, i.e. AMF or MME may not support Nx mouthfuls (3GPP allows Nx mouthfuls to be optional).
In this case for only supporting the terminal singly registered, in the feelings that will appear tracing section updating failure when user is from 5G to 4G
Condition, and IP address can also change after adhering to successfully again, will affect the experience of terminal upper layer application business.
As shown in Fig. 2, illustrating the reason of User IP changes by taking the reuse adoption process under IDLE state from 5G to 4G as an example.
S201, user register in 5G Core, and have built up PDU (Protocol Data Unit, protocol data
Unit) Session, SMF (Session Management Function, conversation management functional) is that user is assigned with IP address；
S202, terminal gravity treatment 4G network are requested to MME initiating updating of tracking area；
S203, due to not supporting Nx mouthfuls, MME obtains user mobility context and session context information without normal direction AMF,
MME refuses usertracking area and updates request；
After S204, UE receive tracing section updating refuse information, the attach request of initial request type is initiated；
S205, creates session and default bearing for user in registration process, and PGW (PDN GW, packet data gateway) is to use
New IP address is distributed at family；
S206, MME send attachment and accept message to UE, wherein carrying ESM (the EPS session that default bearing is established
Management, EPS session management) message, containing is the newly assigned IP address of user.
From the above process as it can be seen that for only supporting the terminal singly registered when being moved to 4G, there are problems that two:
Tracing section updating process is triggered first, but since network side does not support Nx mouthfuls, no normal direction AMF obtains user identity
Mark and context will lead to tracing section updating failure.Then terminal is just adhered to again.In the presence of primary invalid failure, cause
Time delay increases.
When PDN (Public Data Network, public data network) connection is established in attaching process selected PGW with
SMF is not same node in 5GCore, and newly assigned IP is different.It is affected since IP changes upper-layer service.
Summary of the invention
The technical issues of scheme provided according to embodiments of the present invention solves is for only supporting the terminal singly registered moving
When moving 4G, IP address is changed after adhering to successfully again, affects the experience of terminal upper layer application business.
A kind of distribution method of the IP address of mobile terminal provided according to embodiments of the present invention, comprising:
When 5G core net Core is registered and is assigned with switching or gravity treatment of the mobile terminal of IP address from 5G to 4G,
The mobile terminal judges whether current 4G network supports Nx mouthfuls；
When the mobile terminal judges Nx mouthfuls of current 4G network support, normal initiating updating of tracking area process；
When the mobile terminal judges that current 4G network does not support Nx mouthfuls, by directly initiate switching type attachment and
Request is established in PDN connection, what the IP address and mobile terminal for distributing 4G network mobile terminal were distributed when 5G Core is registered
IP address is consistent.
Preferably, it is described when 5G Core register and be assigned with switching of the mobile terminal of IP address from 5G to 4G or
When gravity treatment, the mobile terminal judges whether current 4G network supports that Nx mouthfuls include:
The mobile terminal receives whether the current 4G network that 5G network is sent supports Nx mouthfuls when 5G Core is registered
Message；
The mobile terminal judges whether current 4G network supports Nx mouthfuls according to the received message of institute.
A kind of distribution method of the IP address of mobile terminal provided according to embodiments of the present invention, comprising:
It is described when 5G Core is registered and is assigned with switching or gravity treatment of the mobile terminal of IP address from 5G to 4G
Mobile terminal sends tracing section updating request to current 4G network；
The mobile terminal receive 4G network request according to the tracing section updating and returns comprising switch identify with
Track area updates refuse information；
The mobile terminal according in the tracing section updating refuse information switching identify, initiate switching type attachment and
Request is established in PDN connection, what the IP address and mobile terminal for distributing 4G network mobile terminal were distributed when 5G Core is registered
IP address is consistent.
Preferably, the 4G network is requested according to the tracing section updating and what is returned includes to switch the tracking area identified more
Newly refuse information includes:
After 4G network receives the tracing section updating request, according to self-ability, judge whether it supports Nx mouthfuls；
If 4G network judges that it does not support Nx mouthfuls, the tracing section updating refuse information comprising switching mark is sent to institute
State mobile terminal.
Preferably, the mobile terminal refers to the mobile terminal for only supporting single registration mode；The 4G network refers to MME；
The 5G network refers to SMF.
A kind of distributor of the IP address of mobile terminal provided according to embodiments of the present invention, comprising:
Judgment module, for when 5G Core registers and is assigned with IP address and switching or gravity treatment from 5G to 4G,
Judge whether current 4G network supports Nx mouthfuls；
Distribution module, for when judging Nx mouthfuls of current 4G network support, normal initiating updating of tracking area process, and
When judging that current 4G network does not support Nx mouthfuls, the attachment by directly initiating switching type connects foundation request with PDN, makes
4G network is that the IP address of mobile terminal distribution is consistent with the IP address that mobile terminal is distributed when 5G Core is registered.
Preferably, the judgment module is specifically used for receiving the current 4G network that 5G network is sent in 5G Core registration
Whether support Nx mouthfuls of message, and according to the received message of institute, judges whether current 4G network supports Nx mouthfuls.
It preferably, further include 5G network, for whether 4G network in current region to be supported that Nx mouthfuls are sent to judgment module,
So that judgment module is judged.
A kind of distributor of the IP address of mobile terminal provided according to embodiments of the present invention, comprising:
Sending module, for when 5G Core registers and is assigned with IP address and switching or gravity treatment from 5G to 4G,
Tracing section updating request is sent to current 4G network；
Receiving module, for receive 4G network requested according to the tracing section updating and return comprising switching mark with
Track area updates refuse information；
Distribution module initiates the attached of switching type for identifying according to the switching in the tracing section updating refuse information
Connected with PDN foundation request, make 4G network mobile terminal distribute IP address and mobile terminal 5G Core registration the time-division
The IP address matched is consistent.
It preferably, further include 4G network, after receiving the tracing section updating request, according to self-ability, judgement
Whether it supports Nx mouthfuls, and when judging that it does not support Nx mouthfuls, and the tracing section updating refuse information comprising switching mark is sent
To the receiving module.
The scheme provided according to embodiments of the present invention effectively prevents only supporting single in the case of network side do not support Nx mouthfuls
Primary invalid the tracing section updating failure and subsequent registration success that the terminal of registration mode is occurred when from 5G gravity treatment to 4G
Distributed IP is changed later happens, and avoids the influence to terminal upper layer application business.
Detailed description of the invention
Fig. 1 is the interoperability architecture diagram between the 5G system that the prior art provides and 4G EPC/EUTRAN；
Fig. 2 is 5G to the 4G moving process flow chart that the prior art provides；
Fig. 3 is a kind of distribution method flow chart of IP address of mobile terminal provided in an embodiment of the present invention；
Fig. 4 is a kind of distributor schematic diagram of IP address of mobile terminal provided in an embodiment of the present invention；
Fig. 5 is MME provided in an embodiment of the present invention because not supporting Nx mouthfuls of refusal tracing section updatings carry specific reasons to implement
Example schematic；
Fig. 6 is user provided in an embodiment of the present invention in 5G AMF registration, knows Nx mouthfuls of support situations of network side, avoids
The embodiment schematic diagram that initiating updating of tracking area is requested when being moved to 4G；
Fig. 7 is the terminal provided in an embodiment of the present invention for only supporting single registration mode, when network side does not support Nx mouthfuls, directly
Sending and receiving play attach request, and the embodiment schematic diagram for indicating Handover is established in request in PDN connection.
Specific embodiment
Below in conjunction with attached drawing to a preferred embodiment of the present invention will be described in detail, it should be understood that described below is excellent
Select embodiment only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Fig. 3 is a kind of distribution method flow chart of IP address of mobile terminal provided in an embodiment of the present invention, as shown in figure 3,
Include:
Step S301: when registering and be assigned with switching of the mobile terminal of IP address from 5G to 4G or again in 5G Core
When selecting, the mobile terminal judges whether current 4G network supports Nx mouthfuls；
Step S302: when the mobile terminal judges Nx mouthfuls of current 4G network support, normal initiating updating of tracking area
Process；
Step S303: when the mobile terminal judges that current 4G network does not support Nx mouthfuls, switched by directly initiating
The attachment of type connects foundation request with PDN, and the IP address for distributing 4G network mobile terminal and mobile terminal are in 5G Core
The IP address distributed when registration is consistent.
Wherein, described when registering and be assigned with switching of the mobile terminal of IP address from 5G to 4G or again in 5G Core
When selecting, the mobile terminal judges whether current 4G network supports that Nx mouthfuls include: that the mobile terminal is registered in 5G Core
When, receive the message whether current 4G network that 5G network is sent supports Nx mouthfuls；The mobile terminal according to the received message of institute,
Judge whether current 4G network supports Nx mouthfuls.
The embodiment of the invention also provides a kind of distribution methods of IP address of mobile terminal, comprising:
Step 1: when being registered in 5G Core and be assigned with switching or gravity treatment of the mobile terminal of IP address from 5G to 4G
When, the mobile terminal sends tracing section updating request to current 4G network；
Step 2: the mobile terminal reception 4G network is requested according to the tracing section updating and what is returned marks comprising switching
The tracing section updating refuse information of knowledge；
Step 3: the mobile terminal is identified according to the switching in the tracing section updating refuse information, initiates switching type
Attachment connected with PDN foundation request, make 4G network mobile terminal distribute IP address and mobile terminal 5G Core registration
When the IP address distributed it is consistent.
Wherein, the 4G network is requested according to the tracing section updating and what is returned includes the tracing section updating for switching mark
Refuse information includes: after 4G network receives the tracing section updating request, according to self-ability, to judge whether it supports Nx
Mouthful；If 4G network judges that it does not support Nx mouthfuls, the tracing section updating refuse information comprising switching mark is sent to the shifting
Dynamic terminal.
Wherein, the mobile terminal refers to the mobile terminal for only supporting single registration mode；The 4G network refers to MME；Institute
It states 5G network and refers to SMF.
Fig. 4 is a kind of distributor schematic diagram of IP address of mobile terminal provided in an embodiment of the present invention, as shown in figure 4,
It include: judgment module 401, for when 5G Core registers and is assigned with IP address and switching or gravity treatment from 5G to 4G,
Judge whether current 4G network supports Nx mouthfuls；Distribution module 402, for when judging Nx mouthfuls of current 4G network support, just
Normal initiating updating of tracking area process, and when judging that current 4G network does not support Nx mouthfuls, by directly initiating switching type
Attachment connected with PDN foundation request, make 4G network mobile terminal distribute IP address and mobile terminal 5G Core registration
When the IP address distributed it is consistent.
Wherein, the judgment module 401 is specifically used for receiving the current 4G net that 5G network is sent in 5G Core registration
Whether network supports Nx mouthfuls of message, and according to the received message of institute, judges whether current 4G network supports Nx mouthfuls.
The embodiment of the invention also includes 5G networks, for whether 4G network in current region to be supported that Nx mouthfuls are sent to judgement
Module, so that judgment module is judged.
The embodiment of the invention also provides a kind of distributors of IP address of mobile terminal, comprising: sending module, for working as
When 5G Core registers and be assigned with IP address and switching or gravity treatment from 5G to 4G, tracking is sent to current 4G network
Area updates request；Receiving module, for receive 4G network requested according to the tracing section updating and return comprising switching mark
Tracing section updating refuse information；Distribution module is initiated for being identified according to the switching in the tracing section updating refuse information
The attachment of switching type connects foundation request with PDN, and the IP address for distributing 4G network mobile terminal and mobile terminal are in 5G
The IP address that Core is distributed when registering is consistent.
The embodiment of the invention also includes 4G network, after receiving the tracing section updating request, according to self-ability,
Judge whether it supports Nx mouthfuls, and when judging that it does not support Nx mouthfuls, by the tracing section updating refuse information comprising switching mark
It is sent to the receiving module.
Wherein, the mobile terminal refers to the mobile terminal for only supporting single registration mode；The 4G network refers to moving tube
Manage entity MME；The 5G network refers to conversation management functional SMF.
Two problems present in 4G network are moved to for single registration mode terminal, the present invention uses following technical side
Case:
During 4G tracing section updating, it is not support Nx mouthfuls due to network and can not obtain user identity that MME, which is detected,
When information and context cause tracing section updating to fail, specific identifier can be carried in tracking area failed message.Terminal is according to this
Mark connects in foundation request with PDN in subsequent attachment and indicates Handover type, convenient for selecting and 5G SMF conode
PGW, it is ensured that the IP for distributing to user does not change.
Further, to avoid occurring in 4G network tracing section updating failure, when terminal is registered in 5G network, AMF
Nx mouthfuls of support situations in network side current region can be carried to terminal.For only supporting the terminal of single registration mode, in movement
When to 4G, if Nx mouthfuls of network support, it can normal initiating updating of tracking area process；If network does not support Nx mouthfuls, do not initiate
Tracing section updating, directly initiation attach request avoid the occurrence of primary useless tracing section updating failure, reduce time delay.
Further, for only supporting the terminal of single registration mode, when being moved to 4G, according in registration process before this
The Nx mouth that AMF is issued supports situation, when discovery network side does not support Nx mouthfuls, directly initiates attachment and the PDN of Handover type
Request is established in connection, it is ensured that selected PGW and 5G SMF conode guarantee that User IP does not change.
Embodiment 1
Fig. 5 is MME provided in an embodiment of the present invention because not supporting Nx mouthfuls of refusal tracing section updatings carry specific reasons to implement
Example schematic, as shown in figure 5, MME is detected due to not supporting Nx mouthfuls when user is moved to 4G initiating updating of tracking area from 5G
Refuse terminal, carry specific reasons value, triggering terminal rises adheres to again, and wherein PDN link is established type and is convenient for for Handover
The PGW of selection and 5G SMF conode guarantees that User IP does not change.It specifically includes:
S501, terminal gravity treatment to 4G network are requested to MME initiating updating of tracking area；
S502, MME judge itself not support Nx mouthfuls according to itself ability, no normal direction AMF obtain subscriber identity information and
Contextual information；
S503, MME refuse the tracing section updating request of terminal, carry specific mark；
S504, terminal receive tracing section updating refuse information, according to specific mark, initiate attach request immediately, wherein
The PDN connection for including is established in conversation message, indicates Handover type；
The processes such as S505, MME authenticate user, location updating, and select SGW with PGW since PDN is connected in foundation
Handover is indicated, for PGW the and 5G SMF conode of user's selection；
To SGW creation session request occurs for S506, MME；
To PGW (and SMF conode) creation session request occurs for S507, SGW；
S508, PGW give user to distribute IP address, and identical with the IP that distribute in 5G SMF, give SGW to return to creation session loud
It answers；
S509, SGW send creation conversational response to MME；
S510, MME occur attachment to terminal by eNB and receive；
S511, terminal replies attachment are completed, and base station eNB replys context and establishes response；
S512, MME send bearing modification request to SGW；
S513, SGW reply bearing modification response to MME.
Embodiment 2
Fig. 6 is user provided in an embodiment of the present invention in 5G AMF registration, knows Nx mouthfuls of support situations of network side, avoids
The embodiment schematic diagram that initiating updating of tracking area is requested when being moved to 4G, as shown in fig. 6, user infuses in 5G network to AMF
When volume, AMF is by network side Nx mouthfuls of status of support in current region to user.For only supporting the terminal of single registration mode, work as shifting
When moving 4G, according to Nx mouthfuls of support status triggering tracing section updating requests of network side or attach request.If network side supports Nx
Mouthful, initiating updating of tracking area request；If network side does not support Nx, attach request is initiated.It specifically includes:
S601, user initiate register update request to AMF by RAN；
S602, AMF pass through AUSF (Authentication Server Function, authentication service function), UDM
(Unified Data Management, uniform data management) is authenticated to user and safety mode process；
S603, AMF carry out position updating process to UDM；
S604, AMF are according to terminal capability, the single registration or double registration modes of network capabilities selection user.But for only propping up
The terminal for holding single registration mode can only select single registration mode.AMF exists Nx mouthfuls of network side current region of support status at this time
User is brought in registration received message；
S605, UE may trigger PDU session establishment process according to business needs.For only supporting single registration mode
User, AMF is selected and the SMF of PGW-C conode is user's distribution IP；
Whether S606 supports Nx mouthfuls of situations according to network side when the terminal of single registration mode only being supported to be moved to 4G network
Initiating updating of tracking area request or attach request.When network side does not support Nx mouthfuls, terminal directly initiates attach request, can avoid
Primary invalid tracking area failure procedure.
Embodiment 3
Fig. 7 is the terminal provided in an embodiment of the present invention for only supporting single registration mode, when network side does not support Nx mouthfuls, directly
Sending and receiving play attach request, and the embodiment schematic diagram for indicating Handover is established in request in PDN connection, as shown in fig. 7, user exists
In 5G AMF registration process, Nx mouthfuls of network side of support status can be got, when being moved to 4G network, for only supporting single note
The user of volume mode can directly initiate attaching process when network side does not support Nx mouthfuls, reduce by a TAU (Tracking
Area Update, tracing section updating) failure procedure.Further, if the attach request initiated at this time connects foundation with PDN
Indicate that Handover mark, MME can be the PGW-C of user's selection and SMF conode in request, it is ensured that for the IP of user's distribution
It does not change, improves business experience.It specifically includes:
S701, user succeed in registration in 5GCore, and AMF notifies Nx mouthfuls of support status of network side to end in registration process
End, and in PDU establishment process, only to support the terminal of single registration mode to select and the SMF of PGW-C conode.Specifically
Process is the same as embodiment 2；
S702, user are moved to 4G network, only support the terminal of single registration mode, when discovery network side does not support Nx mouthfuls,
Attach request directly occurs to MME, PDN connection therein, which is established, indicates Handover in message；
The processes such as S703, MME authenticate user, location updating, and SGW and PGW are selected, since PDN connection is established
Middle instruction Handover, for PGW-C the and 5G SMF conode of user's selection；
S704, the PGW for creating conversation procedure and 5G SMF conode is that user distributes IP, consistent with the IP distributed in 5G；
To user attachment received message occurs for S705, MME；
S706, user reply attachment and complete message；
Bearer update process is completed between S707, MME and SGW.
The scheme provided according to embodiments of the present invention, for only supporting the terminal of single registration mode, when being moved to 4G, root
The Nx mouth that AMF is issued in preceding registration process accordingly supports situation, when discovery network side does not support Nx mouthfuls, directly initiation Handover
The attachment of type connects foundation request with PDN, it is ensured that selected PGW and 5G SMF conode guarantee that User IP does not become
Change.
Although describing the invention in detail above, but the invention is not restricted to this, those skilled in the art of the present technique
It can be carry out various modifications with principle according to the present invention.Therefore, all to be modified according to made by the principle of the invention, all it should be understood as
Fall into protection scope of the present invention.
Claims (10)
1. a kind of distribution method of IP address of mobile terminal, comprising:
It is described when 5G core net Core is registered and is assigned with switching or gravity treatment of the mobile terminal of IP address from 5G to 4G
Mobile terminal judges whether current 4G network supports Nx mouthfuls；
When the mobile terminal judges Nx mouthfuls of current 4G network support, normal initiating updating of tracking area process；
When the mobile terminal judges that current 4G network does not support Nx mouthfuls, by directly initiate switching type attachment and it is public
Request is established in data network PDN connection, and the IP address and mobile terminal for distributing 4G network mobile terminal are when 5G Core is registered
The IP address of distribution is consistent.
2. according to the method described in claim 1, described ought register in 5G core net Core and be assigned with the mobile end of IP address
When holding the switching or gravity treatment from 5G to 4G, the mobile terminal judges whether current 4G network supports that Nx mouthfuls include:
The mobile terminal receives the message whether current 4G network that 5G network is sent supports Nx mouthfuls when 5G Core is registered；
The mobile terminal judges whether current 4G network supports Nx mouthfuls according to the received message of institute.
3. a kind of distribution method of IP address of mobile terminal, comprising:
It is described when 5G core net Core is registered and is assigned with switching or gravity treatment of the mobile terminal of IP address from 5G to 4G
Mobile terminal sends tracing section updating request to current 4G network；
The mobile terminal receives the tracking area comprising switching mark that 4G network is requested according to the tracing section updating and returned
Update refuse information；
The mobile terminal is identified according to the switching in the tracing section updating refuse information, initiates switching type attachment and PDN
Request is established in connection, the IP that the IP address and mobile terminal for distributing 4G network mobile terminal are distributed when 5G Core is registered
Address is consistent.
4. according to the method described in claim 3, the 4G network is requested according to the tracing section updating and what is returned includes to cut
Dehorn know tracing section updating refuse information include:
After 4G network receives the tracing section updating request, according to self-ability, judge whether it supports Nx mouthfuls；
If 4G network judges that it does not support Nx mouthfuls, the tracing section updating refuse information comprising switching mark is sent to the shifting
Dynamic terminal.
5. according to the method described in claim 4, the mobile terminal refers to the mobile terminal for only supporting single registration mode；It is described
4G network refers to mobile management entity MME；The 5G network refers to conversation management functional SMF.
6. a kind of distributor of IP address of mobile terminal, comprising:
IP address and switching or gravity treatment from 5G to 4G are registered and be assigned with to judgment module in 5G core net Core for working as
When, judge whether current 4G network supports Nx mouthfuls；
Distribution module, for when judging Nx mouthfuls of current 4G network support, normal initiating updating of tracking area process, and sentencing
When the 4G network for breaking current does not support Nx mouthfuls, connects with public data network PDN to establish by directly initiating switching type attachment and ask
It asks, the IP address for distributing 4G network mobile terminal is consistent with the IP address that mobile terminal is distributed when 5G Core is registered.
7. device according to claim 6, the judgment module is specifically used for receiving 5G network hair in 5GCore registration
Whether the current 4G network sent supports Nx mouthfuls of message, and according to the received message of institute, judges whether current 4G network is supported
Nx mouthfuls.
8. device according to claim 7 further includes 5G network, for whether 4G network in current region to be supported Nx mouthfuls
It is sent to judgment module, so that judgment module is judged.
9. a kind of distributor of IP address of mobile terminal, comprising:
IP address and switching or gravity treatment from 5G to 4G are registered and be assigned with to sending module in 5G core net Core for working as
When, tracing section updating request is sent to current 4G network；
Receiving module, the tracking area comprising switching mark requested and returned according to the tracing section updating for receiving 4G network
Update refuse information；
Distribution module, for according in the tracing section updating refuse information switching identify, initiate switching type attachment and
Request is established in PDN connection, what the IP address and mobile terminal for distributing 4G network mobile terminal were distributed when 5G Core is registered
IP address is consistent.
10. device according to claim 9 further includes 4G network, after receiving the tracing section updating request, root
According to self-ability, judge whether it supports Nx mouthfuls, and when judging that it does not support Nx mouthfuls, more by the tracking area comprising switching mark
New refuse information is sent to the receiving module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710431602.6A CN109040327A (en) | 2017-06-09 | 2017-06-09 | A kind of distribution method and device of IP address of mobile terminal |
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| CN201710431602.6A CN109040327A (en) | 2017-06-09 | 2017-06-09 | A kind of distribution method and device of IP address of mobile terminal |
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