CN107888498A - Realize the method and device and network element and device of user plane functions management - Google Patents
Realize the method and device and network element and device of user plane functions management Download PDFInfo
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- 238000013508 migration Methods 0.000 claims abstract description 107
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
- H04L45/028—Dynamic adaptation of the update intervals, e.g. event-triggered updates
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/125—Shortest path evaluation based on throughput or bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/302—Route determination based on requested QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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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
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/563—Data redirection of data network streams
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Abstract
The invention discloses a kind of method and device for realizing user plane functions management and network element and device, including：Accessing terminal to network, has established data forwarding paths on some UPF, and UPF shift functions (UTF) are determined to need to migrate the user path of the terminal according to the strategy pre-set；UTF controls current end user path is migrated to target UPF from the UPF for having established data forwarding paths.By technical scheme provided by the invention, the dynamic migration of user plane functions is realized, and ensure that the continuity of customer service, improves Consumer's Experience.
Description
Technical field
The present invention relates to mobile communication technology, espespecially a kind of method and device for realizing user plane functions management and network element and
Device.
Background technology
Fig. 1 is the structure composed schematic diagram of existing 3GPP evolved packet systems, as shown in figure 1,3GPP evolved packet systems
(EPS, Evolved Packet System) includes：Evolution UMTS land radio access web (E-UTRAN,
Evolved Universal Terrestrial Radio Access Network), mobile management unit (MME, Mobility
Management Entity), gateway (S-GW, Serving Gateway), grouped data network gateway (PDN GW or P-
GW, Packet Data Network Gateway), home subscriber server (HSS, Home Subscriber Server),
3GPP authentication and authorization charging (AAA, Authentication, Authorization and Accounting) server, plan
Omit and charging regulation function entity (PCRF, Policy and Charging Rules Function) and other support nodes.
Wherein, MME is used for mobile management, the processing of Non-Access Stratum signaling and management of user's mobile management context etc.
Chain of command related work；S-GW is the accessing gateway equipment being connected with E-UTRAN, and data are forwarded between E-UTRAN and P-GW,
And for being cached to pending datas such as pagings；P-GW is then EPS and PDN borde gateway, for PDN access and
The functions such as data are forwarded between EPS and PDN.PCRF is responsible for strategic decision-making and the formulation of charging regulation, there is provided based on business data flow
Gate, service quality control and charging regulation to GW, perform the strategy and charging regulation that PCRF formulated in loading end.Holding
When load is established, the rule that GW is sent according to PCRF carries out service quality (QoS) mandate and gate controls.
In 3 gpp, UE can find corresponding grouped data by APN (APN, Access Point Name)
Network (PDN, Packet Data Network), in order to access PDN, UE can establish IP connection access networks (IP-CAN, an IP
Connectivity Access Network) session PDN connections.
With the growth of demand, EPS gateways progressively generate some constraints.User data stream process concentrates on PDN outlets
Gateway, it is numerous and diverse to cause gateway device function, poor expandability.The chain of command of gateway highly couples with forwarding surface, is unfavorable for core
Heart net smooth evolution.Forwarding surface dilatation demand frequency is higher than chain of command, and close coupling result in chain of command forwarding surface synchronization dilatation, if
Standby update cycle short-range missile causes composite cost increase.Network layer data forwarding is difficult to user, service feature, is only capable of according to upper strata
The QoS forwardings of transmission, it is poorly efficient to result in network resource usage, it is difficult to data stream is finely controlled according to user and traffic performance
System.In addition, a large amount of strategies need manual configuration, management complexity is caused to increase, operation cost remains high.Therefore, it is necessary to will
Control function in packet domain gateway further separates with forwarding capability, to adapt to the demand of network Development and market application.
Fig. 2 is the configuration diagram that EPC is separated based on GW chains of command under non-roaming scene and user plane in correlation technique, such as
Shown in Fig. 2, the framework is by S-GW, P-GW in original EPS frameworks and current detection functionality (TDF, Traffic Detection
Function) all split into chain of command function (CPF, Controller plane function) and user plane functions (UPF,
User plane function) two class functional network elements, by taking Fig. 2 as an example, it is corresponding that S-GW corresponds to SGW UPF and SGW CPF, PGW
In PGW UPF and PGW CPF.Here, different types of CPF or UPF can unify deployment, can also independently dispose, such as Fig. 2 institutes
Show, SGW CPF and PGW CPF, which are just closed, is set to GwC.Wherein, CPF is responsible for chain of command function, including load sharing, UPF selection,
Functions such as UE IP address distribution, strategy and charging control etc., alternatively, CPF also the user plane address comprising UPF and tunnel mark
The distribution of knowledge.UPF is responsible for user plane correlation function, including data flow identification and depth Packet analyzing, QoS processing and bearing binding,
Caching of downlink page data etc..The user plane and chain of command interface of docking correspond on corresponding CPF and UPF respectively, remaining
The corresponding interface function compares former EPS frameworks.
On the basis of the current 4G network architectures, when user access network, CPF is that terminal selects one to be used as IP anchor points
UPF after, no matter UE is switched or roamed, this as IP anchor points UPF all without changing.So, user is worked as
Be moved to a geographical position from the IP anchor points of access UPF farther out when, the data forwarding paths of user will become very long, drop
Low Consumer's Experience.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of method and device and net for realizing user plane functions management
Member and device, the dynamic migration of user plane functions can be realized, ensure the continuity of customer service, lift Consumer's Experience.
In order to reach the object of the invention, the invention provides a kind of method for realizing user plane functions management, terminal access
Network, data forwarding paths are established on some UPF, including：
UPF shift functions UTF determines to need to move the user path of the terminal according to the strategy pre-set
Move；
UTF controls current end user path is migrated to target UPF from the UPF for having established data forwarding paths.
Alternatively, the UTF control current end user path from the UPF for having established data forwarding paths migrate to
Target UPF includes：
The UTF passes to target UPF marks the UPF of the currently-established data forwarding paths of terminal；
The UPF of the currently-established data forwarding paths of terminal identifies according to target UPF, by user data path information
It is sent to the target UPF；
The target UPF preserves user data path information and issues subscriber's main station route, so that migration of subscriber data is extremely
Target UPF.
Alternatively, when target UPF marks are passed to the UPF of the currently-established data forwarding paths of terminal by the UTF, also
Including：
The UTF is by for indicating whether distribute the migration type transfer of IP address to described again for UE in transition process
The UPF of the currently-established data forwarding paths of terminal；
The UPF of the currently-established data forwarding paths of terminal is sent to target UPF by type is migrated；
If migration type is shown as needing distributing IP address again for UE, the target UPF is that the terminal redistributes IP
Address, and pass to the terminal via CPF.
Alternatively, the UTF controls current end user path is migrated to target from the UPF for having established data forwarding paths
UPF includes：
The UTF receive the UPF from the currently-established data forwarding paths of the terminal migration confirm after, to described
Target UPF initiates migration request；
The target UPF obtains the user data path information of terminal from shared data bank and issues subscriber's main station road
By so that migration of subscriber data is to target UPF.
Alternatively, when the UTF is to target UPF initiation migration requests, in addition to：
The UTF is by for indicating whether distribute the migration type transfer of IP address to described again for UE in transition process
Target UPF；
If migration type is shown as needing distributing IP address again for UE, the target UPF is that the terminal redistributes IP
Address, and pass to the terminal via CPF.
Alternatively, before the target UPF obtains the user data path information of terminal from shared data bank, also wrap
Include：
The UPF of the currently-established data forwarding paths of terminal receive from UTF moving out request when, by user
Data path information is sent to the shared data bank.
Alternatively, in addition to：The UPF of the currently-established data forwarding paths of terminal deletes the related main frame road of user
By.
Alternatively, after the target UPF issues subscriber's main station route, in addition to：
The target UPF is that new data tunnel mark is redistributed in the data connection of terminal.
Alternatively, in addition to：The target UPF notice CPF change the number of the terminal using data tunnel mark
According to tunnel information.
Alternatively, the accessing terminal to network, on some UPF establish have data forwarding paths after, the UTF according to
Before the strategy pre-set is determined to need to migrate the user path of the terminal, in addition to：
The UTF obtains institute from the UPF or third party's shared data bank of the currently-established data forwarding paths of the terminal
The current business model of terminal is stated, and the currently-established data forwarding paths of the terminal are judged according to the business model
UPF is non-optimal.
Present invention also offers a kind of device for realizing user plane functions management, including decision-making module, processing module, its
In,
Decision-making module, for determining to need to migrate the user path of terminal according to the strategy pre-set, its
In, terminal is accessed network, and the terminal of data forwarding paths has been established on some UPF；
Processing module, for control current end user path from the UPF for having established data forwarding paths migrate to
Target UPF.
Alternatively, described device is an independent community in network, or a work(being provided in existing network element
Energy.
Alternatively, the processing module is specifically used for：Target UPF marks are passed into the currently-established data of the terminal
The UPF of forward-path.
Alternatively, the processing module is specifically used for：Receive from the currently-established data forwarding paths of the terminal
After UPF migration confirms, migration request is initiated to target UPF；Receive and move into response from target UPF, work as to the terminal
The preceding UPF for having established data forwarding paths returns to instruction of moving out.
Alternatively, the processing module is additionally operable to：To be used to indicate in transition process distributing IP address whether again for UE
Migration type transfer give the currently-established data forwarding paths of the terminal UPF or target UPF.
Alternatively, the decision-making module is additionally operable to：From the UPF or the 3rd of the currently-established data forwarding paths of the terminal
Square shared data bank obtains the current business model of terminal, and judges the currently-established number of the terminal according to the business model
It is non-optimal according to the UPF of forward-path.
Invention further provides a kind of network element, as user plane functions, including forwarding module, migrates respond module；Wherein,
Forwarding module, for establishing data forwarding paths with terminal, and carry out the transmission of user data；
Respond module is migrated, under UTF control, the user for the terminal for there are data forwarding paths being established with itself
Path Migration is to target UPF.
Alternatively, the migration respond module is specifically used for：The target UPF marks from UTF are received, according to target
UPF is identified, and user data path information is sent into the target UPF.
Alternatively, the migration respond module is additionally operable to：The migration type from UTF is received, migration type is sent
To the target UPF.
Alternatively, the migration respond module is specifically used for：When receiving the migration request from UTF, migration is confirmed
It is sent to UTF.
Alternatively, the migration respond module is additionally operable to：Receive from UTF moving out request when, by user data
Routing information is sent to shared data bank.
The present invention provides a kind of network element again, as user plane functions, including forwarding module, migrates respond module；Wherein,
Forwarding module, for establishing data forwarding paths with terminal, and carry out the transmission of user data；
Respond module is migrated, under UTF control, the user path of terminal to be had into data forwarding from terminal foundation
The UPF in path is migrated to network element where itself.
Alternatively, the migration respond module is specifically used for：Preserve the user data path information received and issue use
Family Host routes, so that migration of subscriber data is to user plane functions network element where itself.
Alternatively, the migration respond module is additionally operable to：Receive and be shown as needing distributing moving for IP address again for UE
Type is moved, redistributes IP address for the terminal, and the terminal is passed to via CPF.
Alternatively, the migration respond module is specifically used for：
The migration request from UTF is received, the user data path information that terminal is obtained from shared data bank is concurrent
Cloth subscriber's main station is route, so that migration of subscriber data is to user plane functions network element where itself.
Alternatively, the migration respond module is additionally operable to：It is that the data of the terminal connect after issuing subscriber's main station route
Redistribute new data tunnel mark；Via CPF modification data tunnel mark is asked to RAN.
Present invention also offers a kind of network element, including the network element described in any one of above two.
The present invention provides a kind of network element again, as chain of command function, including the first update module, for receiving data
Tunnel Identifier, modification data tunnel mark is asked to RAN.
Alternatively, first update module is additionally operable to：The IP address of terminal is received, the IP of terminal is passed to correspondingly
Terminal.
Present invention also offers a kind of terminal, including the second update module, for receiving IP address, updates original session
IP address, use the IP address accessing data service of renewal.
Compared with prior art, technical scheme includes：Accessing terminal to network, being established on some UPF has data
Forward-path, UPF shift functions (UTF) are determined to need to move the user path of the terminal according to the strategy pre-set
Move；UTF controls current end user path is migrated to target UPF from the UPF for having established data forwarding paths.Carried by the present invention
The technical scheme of confession, realizes the dynamic migration of user plane functions, and ensure that the continuity of customer service, improves user
Experience.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and obtained in claim and accompanying drawing.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structure composed schematic diagram of existing 3GPP evolved packet systems；
Fig. 2 is the configuration diagram that EPC is separated based on GW chains of command under non-roaming scene and user plane in correlation technique；
Fig. 3 is the flow chart for the method that the present invention realizes user plane functions management；
Fig. 4 is UTF of the present invention management schematic diagram；
Fig. 5 is the schematic flow sheet of the first embodiment for the method that the present invention realizes user plane functions management；
Fig. 6 is the schematic flow sheet of the second embodiment for the method that the present invention realizes user plane functions management；
Fig. 7 is the schematic flow sheet of the 3rd embodiment for the method that the present invention realizes user plane functions management；
Fig. 8 is the schematic flow sheet of the fourth embodiment for the method that the present invention realizes user plane functions management；
Fig. 9 is the schematic flow sheet of the 5th embodiment of the method that the present invention realizes user plane functions management；
Figure 10 is the composition structural representation for the device that the present invention realizes user plane functions management；
Figure 11 is the composition structural representation of user plane functions network element of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
Fig. 3 is the flow chart for the method that the present invention realizes user plane functions management, as shown in figure 3, including：
Step 300：Accessing terminal to network, data forwarding paths, UPF shift functions (UTF) root are established on some UPF
Determine to need to migrate the user path of the terminal according to the strategy pre-set.
In the embodiment of the present invention, UTF is a kind of network functional entity for determining dynamic migration UPF.
UTF, for managing the UPF in certain area coverage, as shown in figure 4, UTF manages UPF1, UPF2, UPF3, UPFn；
Work as accessing terminal to network, and after establishing data forwarding paths on a UPF, UTF is according to the strategy pre-set, by the terminal
Data path move to another more excellent UPF from a UPF.
Wherein, the strategy pre-set can include but is not limited to：Detect user's current business path be not it is optimal,
Or operator upgrades for operation maintenance demand or the UPF of offline currently-established data forwarding paths, or operator for
Economize on electricity considers closing or partly closes the UPF of currently-established data forwarding paths, or currently-established data forwarding paths
UPF loads it is too high need unload sub-load etc..
UTF can be an independent community in network or the One function that is arranged in existing network element, such as
It is arranged in GwC as shown in Figure 2, or is provided in some CPF as shown in Figure 4.
Step 301：UTF controls current end user path is migrated to mesh from the UPF for having established data forwarding paths
Mark UPF.
In this step, UTF determines that target UPF methods can include but is not limited to：For example selected again according to UE current locations
Select a target UPF nearby；For another example, the UPF overloads being currently accessed are judged, it is lighter to reselect a load for UE
Target UPF.
If target UPF and the currently-established data forwarding paths of terminal UPF direct communications, then, step 301 is specific
It can include：
UTF passes to target UPF marks the UPF of the currently-established data forwarding paths of terminal；
The UPF of the currently-established data forwarding paths of terminal is identified according to target UPF, and user data path information is sent
To target UPF；
Target UPF preserves user data path information and simultaneously issues subscriber's main station route, so that migration of subscriber data is to target
UPF。
Alternatively,
When target UPF marks are passed to the UPF of the currently-established data forwarding paths of terminal by UTF, if will also be used for
The migration type transfer for indicating whether to distribute IP address in transition process for UE again gives terminal currently-established data forwarding road
The UPF in footpath, the inventive method also include：
The UPF of the currently-established data forwarding paths of terminal is sent to target UPF by type is migrated；
If migration type is shown as needing distributing IP address again for UE, target UPF is that the terminal redistributes IP address,
And pass to terminal via CPF.
Explanation is needed exist for, migration type can also be exactly in itself one and represent to need to distribute IP address again for UE
Mark.
Or if the UPF of target UPF and the currently-established data forwarding paths of terminal has third party's shared data
Storehouse, step 301 can also specifically include：
After UTF receives the migration confirmation for the UPF for carrying out the currently-established data forwarding paths of self terminal, initiated to target UPF
Migration request；
Target UPF obtains the user data path information of terminal from shared data bank and issues subscriber's main station route, with
Make migration of subscriber data to target UPF.
Alternatively,
When UTF is to target UPF initiation migration requests, if will also be used to indicate in transition process being distributed whether again for UE
The migration type transfer of IP address gives target UPF, and this method also includes：
If migration type is shown as needing distributing IP address again for UE, target UPF is that the terminal redistributes IP address,
And pass to the terminal via CPF.
Alternatively, if the UPF of the currently-established data forwarding paths of terminal is when terminal accesses, not by user data road
Footpath information is sent to shared data bank, in addition to：
The UPF of the currently-established data forwarding paths of terminal receive from UTF moving out request when, by user data
Routing information is sent to shared data bank.
Alternatively, also include after the inventive method：
The UPF of the currently-established data forwarding paths of terminal deletes the related Host routes of user.
Alternatively, the inventive method also includes：It is the data connection weight of terminal after target UPF issue subscriber's main station routes
Newly distribute new data tunnel mark.Specifically include：
Target UPF is that new data tunnel mark is redistributed in the data connection of terminal；Ask to change to RAN via CPF
Data tunnel identifies.
Alternatively, the accessing terminal to network in step 300, and on some UPF establish have data forwarding paths after,
Before UTF determines to need to migrate the user path of the terminal according to the strategy pre-set, in addition to：
UTF supports that UPF or third party's shared data bank the acquisition UE from the currently-established data forwarding paths of terminal are current
Business model, and judge the UPF of the currently-established data forwarding paths of terminal to be non-optimal according to the business model.Its
In, business model includes but is not limited to：(application type such as Facebook, Sina are micro- for the data traffic types of user's current accessed
Rich or Business Stream IP five-tuples), duration is accessed, flowing of access, accesses position etc..
By technical scheme provided by the invention, realize in 4G frameworks, or even following 5G software architectures, user be present
When online, according to customer service and other strategies, the IP anchor points of user are dynamically moved to another UPF's from a UPF
Scene, realizes the dynamic migration of user plane functions, and ensure that the continuity of customer service, improves Consumer's Experience.
The inventive method is described in detail with reference to specific embodiment.
Fig. 5 realizes the schematic flow sheet of the first embodiment of the method for user plane functions management, the present embodiment for the present invention
In, it is assumed that UTF initiates user UPF migrations, and UE IP address is constant, moves into UPF i.e. target UPF and UPF i.e. terminal of moving out is current
The UPF direct communications of data forwarding paths are established, are such as schemed:Shown in 5, comprise the following steps：
Step 500：Terminal has accessed network and data path is established on UPF1, and user data is turned by UPF1
Hair.
Step 501：UTP triggering user data moves to UPF2 from UPF1.UTF determines need according to the strategy pre-set
User path is moved into UPF2 (i.e. target UPF) from UPF1 (move out UPF).
Wherein, the strategy pre-set can include but is not limited to：Detect user's current business path be not it is optimal,
Or operator upgrades for operation maintenance demand or the UPF of offline currently-established data forwarding paths, or operator for
Economize on electricity considers closing or partly closes the UPF of currently-established data forwarding paths, or currently-established data forwarding paths
UPF loads it is too high need unload sub-load etc..
Step 502：UTF sends request of moving out to UPF1, and the terminal iidentification to be migrated at least is carried in request of moving out
Identified with target UPF.
Step 503：UPF1 returns to response of moving out to UTF, wherein carrying terminal iidentification.
Step 504：UPF1 extracts user data path information, and deletes the related Host routes of UE.Now, line number under UE
According to being not sent further on UPF1.
Step 505：UPF1 is sent to UPF2 and moves into request, and user data path letter is at least carried in request is moved into
Breath, includes UE IP address etc..Now, the upstream data that UPF1 is received can be transmitted to UPF2.
Step 506：UPF2 preserves user data path information, and issues the related Host routes of UE.Now, line number under UE
According to UPF2 can be sent to.
Step 507：UPF2 is returned to UPF1 and is moved into response, and UPF1 can now delete the user data path letter locally preserved
Breath.
Step 508：If the data connection that UPF2 is UE is assigned with new data tunnel mark, UPF2 is sent more to CPF
New user information request, user is carried in user information request is updated and is currently located UPF information such as UPF2IP addresses, for
The newly assigned data tunnel mark in family such as corresponds to the TEID of GTP agreements.
Step 509:CPF initiates modification data tunnel request to RAN, is carried in modification data tunnel request current
UPF IP address is UPF2IP addresses, UE current data Tunnel Identifiers etc..
Step 510:RAN returns to modification data tunnel response to CPF.Hereafter, UE upstream datas will directly transmit via RAN
To UPF2, UE up-downgoing data forwarding paths all move to UPF2.
Step 511：CPF returns to renewal user profile response to UPF2.
Distributed it should be noted that if data tunnel identifies by CPF, the data tunnel mark in above-mentioned UPF transition processes
Knowledge can keep constant, that is to say, that step 508~step 511 can be omitted.
According to embodiment provided by the present invention, it should be readily apparent to one skilled in the art that in the base of technical solution of the present invention
On plinth, UTF also can one group of user of decision-making or whole users migration, it is disposable or in batches to the migration in need of UPF instructions institute
User mark or group mark.Wherein, organizing mark can connect for such as APN, priority, UE IP sections, UE types of service, UE
Network section mark entered etc..Disposable or user data path information transfer in batches is carried out between UPF1 and UPF2.
Fig. 6 realizes the schematic flow sheet of the second embodiment of the method for user plane functions management, the present embodiment for the present invention
In, it is assumed that UTF initiates user UPF migrations, and UE IP address is constant, moves into UPF i.e. target UPF and UPF i.e. terminal of moving out is current
The UPF for establishing data forwarding paths has shared data bank, is dispatched and indicated by UTF.As shown in fig. 6, comprise the following steps：
Step 600：Terminal has accessed network and data path is established on UPF1, and user data is turned by UPF1
Hair.
Step 601：UTP triggering user data moves to UPF2 from UPF1.UTF determines need according to the strategy pre-set
User path is moved into UPF2 (i.e. target UPF) from UPF1 (move out UPF).
Step 602：UTF sends request of moving out to UPF1, and the terminal iidentification to be migrated at least is carried in request of moving out
Deng.
Step 603：UPF1 extracts user data path information and is saved in shared data bank.
It should be noted that if user data path information has been saved in shared data by UPF1 when terminal accesses
Storehouse, then, this step can be omitted in transition process.
Step 604：UPF1 returns to response of moving out to UTF, wherein carrying terminal iidentification.
Step 605：UTF is sent to UPF2 and moves into request, and terminal iidentification to be migrated etc. is carried in request is moved into.
Step 606：UPF2 obtains user data path information from shared data bank.
Step 607：UPF2 is returned to UTF and is moved into response.
Step 608：UTF sends instruction of moving out to UPF1, and terminal iidentification to be migrated etc. is carried in instruction of moving out.
Step 609：UPF1 deletes the user data path information locally preserved, and deletes the related Host routes of UE.This
When, UE downlink datas are not sent further on UPF1, and the upstream data that UPF1 is received can be transmitted to UPF2.
Step 610：UTF is sent to UPF2 and moves into instruction, and terminal iidentification to be migrated etc. is carried in instruction is moved into.
Step 611：Host routes related UTF2 issues UE.Now, UE downlink datas can be sent to UTF2.
Step 612：If the data connection that UPF2 is UE is assigned with new data tunnel mark, UPF2 is sent more to CPF
New user information request, user is carried in user information request is updated and is currently located UPF information such as UPF2IP addresses, for
The newly assigned data tunnel mark (TEID for such as corresponding to GTP agreements) in family.
Step 613:CPF initiates modification data tunnel request to RAN, is carried in modification data tunnel request current
UPF IP address is UPF2IP addresses, UE current data Tunnel Identifiers etc..
Step 614:RAN returns to modification data tunnel response to CPF.Hereafter, UE upstream datas will directly transmit via RAN
To UPF2, UE up-downgoing data forwarding paths all move to UPF2.
Step 615：CPF returns to renewal user profile response to UPF2.
Distributed it should be noted that if data tunnel identifies by CPF, the data tunnel mark in above-mentioned UPF transition processes
Knowledge can keep constant, that is to say, that step 612~step 6 15 can be omitted.
According to embodiment provided by the present invention, it should be readily apparent to one skilled in the art that in the base of technical solution of the present invention
On plinth, UTF also can one group of user of decision-making or whole users migration, it is disposable or in batches to the migration in need of UPF instructions institute
User mark or group mark.Wherein, organizing mark can connect for such as APN, priority, UE IP sections, UE types of service, UE
The network section mark or imparting UE other marks etc. in access entered.
Fig. 7 realizes the schematic flow sheet of the 3rd embodiment of the method for user plane functions management, the present embodiment for the present invention
In, it is assumed that user UPF migrations are triggered by UPF report of user business model, UE IP address keeps constant, moves into UPF i.e. target
UPF and the currently-established data forwarding paths of UPF i.e. terminal of moving out UPF direct communications, as shown in fig. 7, comprises following steps：
Step 700：Terminal has accessed network and data path is established on UPF1, and user data is turned by UPF1
Hair.
Step 701：UPF1 to the current business model of UTF reporting terminals, such as the type of service such as video of current accessed,
Browse or instant messaging etc..
Step 702：UTF judges that the UPF1 of active user is non-optimal, it is necessary to be moved to a more excellent UPF.
In this step, such as：If the terminal of the access video traffic of the UPF1 accesses of active user is more, then, can
It is non-optimal with the UPF1 for judging current, move to the UPF that other rear ends are deployed with video cache；Or for another example：UTF judges UE
It is far from the UPF1 geographical position being initially accessed to be currently accessed geographical position, determines that UE is moved into a distance UE currently connects
Enter geographical position closer to UPF.
Step 703：UTF sends request of moving out to UPF1, and the terminal iidentification and mesh to be migrated are carried in migration request
Mark UPF marks etc..
Step 704：UPF1 returns to response of moving out to UTF, wherein carrying terminal iidentification.
Step 705：UPF1 extracts user data path information, and deletes the related Host routes of UE.Now, line number under UE
According to being not sent further on UPF1.
Step 706：UPF1 is sent to UPF2 and moves into request, and user data path information is carried in request is moved into, and is wrapped
IP address containing UE etc..Now, the upstream data that UPF1 is received can be transmitted to UPF2.
Step 707：UPF2 preserves user data path information, and issues the related Host routes of UE.Now, line number under UE
According to UPF2 can be sent to.
Step 708：UPF2 is returned to UPF1 and is moved into response, and UPF1 can now delete the user data path letter locally preserved
Breath.
Step 709：If the data connection that UPF2 is UE is assigned with new data tunnel mark, UPF2 is sent more to CPF
New user information request, user is carried in user information request is updated is currently located UPF information and (such as UPF2IP addresses, be
The newly assigned data tunnel mark of user such as corresponds to the TEID of GTP agreements.
Step 710:CPF initiates modification data tunnel request to RAN, is carried in modification data tunnel request current
UPF IP address is UPF2IP addresses, UE current data Tunnel Identifiers etc..
Step 711:RAN returns to modification data tunnel response to CPF.Hereafter, UE upstream datas will directly transmit via RAN
To UPF2, UE up-downgoing data forwarding paths all move to UPF2.
Step 712：CPF returns to renewal user profile response to UPF2.
Distributed it should be noted that if data tunnel identifies by CPF, the data tunnel mark in above-mentioned UPF transition processes
Knowledge can keep constant, that is to say, that step 709~step 712 can be omitted.
According to embodiment provided by the present invention, it should be readily apparent to one skilled in the art that in the base of technical solution of the present invention
On plinth, UTF also can one group of user of decision-making or whole users migration, it is disposable or in batches to the migration in need of UPF instructions institute
User mark or group mark.Wherein, organizing mark can connect for such as APN, priority, UE IP sections, UE types of service, UE
Network section mark entered etc..Disposable or user data path information transfer in batches is carried out between UPF1 and UPF2.
In the embodiment shown in fig. 7, UTF obtain business model mode do not limit with the mode described in step 701,
Can also be：The UPF that moves out reports UE business model to third party entity, and UTF gets UPF business mould from third party entity
Type.
Fig. 8 realizes the schematic flow sheet of the fourth embodiment of the method for user plane functions management, the present embodiment for the present invention
In, it is assumed that, it is necessary to IP address be redistributed for UE, as shown in figure 8, comprising the following steps in transition process：
Redistributing IP address for UE can cause short time service to interrupt, and UE needs to use new IP address to re-start industry
Business, but UE, RAN and core net are that the session that UE is established will not be rebuild, and only carry out the renewal of UE IP address.
Step 800：Terminal has accessed network and data path is established on UPF1, and user data is turned by UPF1
Hair.
Step 801：UTP triggering user data moves to UPF2 from UPF1.UTF determines need according to the strategy pre-set
User path is moved into UPF2 (i.e. target UPF) from UPF1 (move out UPF).
Step 802：UTF sends request of moving out to UPF1, and the terminal iidentification to be migrated at least is carried in request of moving out
Identified with target UPF, and for indicating in transition process to distribute the migration type of IP address for UE whether again.
If it should be noted that for the target UPF shown in Fig. 6 and the currently-established data forwarding paths of terminal
UPF has the embodiment of third party's shared data bank, when the UTF of step 605 initiates migration request to target UPF, Ke Yijin
Whether it is again the migration type of UE distribution IP address that one step is carried for indicating in transition process.So, target UPF is following
It can be that the terminal redistributes IP address, and terminal is passed to via CPF.
Step 803：UPF1 returns to response of moving out to UTF, wherein carrying terminal iidentification.
Step 804：UPF1 extracts user data path information, and judges that UE can redistribute IP according to migration type.
Step 805：UPF1 is sent to UPF2 and moves into request, and user data path letter is at least carried in request is moved into
Breath, includes UE IP address etc..
Step 806：UPF2 preserves user data path information, judges to need to redistribute IP for UE according to migration type
Simultaneously IP address is redistributed for UE in address.
Step 807：UPF2 returns to the response of moving into for carrying terminal iidentification to UPF1, and UPF1 can now delete local preservation
User data path information.
Step 808：The data connection that UPF2 is UE is assigned new UE IP address, and therefore, UPF2 needs to send to CPF
Update user information request, carried in user information request update user be currently located UPF information such as UPF2IP addresses with
New IP address of user etc..
Further, in the present embodiment, if the data connection that UPF2 is UE is assigned new data tunnel mark, that
, user newly assigned data tunnel mark such as the TEID of corresponding GTP agreements are also carried in user information request is updated.
Step 809：CPF judges that the IP address of user changes, and modification session request is sent to UE, in modification session
The new IP address of user is carried in request.
Step 810:CPF initiates modification data tunnel request to RAN, is carried in modification data tunnel request current
UPF IP address, UE current data Tunnel Identifiers etc..
Step 811:RAN returns to modification data tunnel response to CPF.Hereafter, UE upstream datas will directly transmit via RAN
To UPF2, UE up-downgoing data forwarding paths all move to UPF2.
Step 812：UE returns to modification conversational response to CPF.Now, UE can use new IP address accessing data service.
Step 813：CPF returns to renewal user profile response to UPF2.
It should be noted that if data tunnel identifies and UE IP are distributed by CPF, the data in above-mentioned UPF transition processes
Tunnel Identifier and UE IP can keep constant, then, step 810~step 811 can be omitted.
According to embodiment provided by the present invention, it should be readily apparent to one skilled in the art that in the base of technical solution of the present invention
On plinth, UTF also can one group of user of decision-making or whole users migration, it is disposable or in batches to the migration in need of UPF instructions institute
User mark or group mark.Wherein, organizing mark can connect for such as APN, priority, UE IP sections, UE types of service, UE
Network section mark entered etc..Disposable or user data path information transfer in batches is carried out between UPF1 and UPF2.
Fig. 9 realizes the schematic flow sheet of the 5th embodiment of the method for user plane functions management, the present embodiment for the present invention
So that under existing EPC frameworks, UE IP update in UPF transition processes, and/or it is the newly assigned data tunnel mark of user
After the TEID for such as corresponding to GTP agreements, the description of follow-up process is carried out exemplified by the interacting message between CPF, UE and RAN, such as Fig. 9 institutes
Show, comprise the following steps：
Step 900：MME receives more new bearer request by SGW, the new IP of user is carried in more new bearer request
Location, new SGW UPF user planes transmission address, and newly assigned SGW TEID-U.
Step 901：MME initiates modification EPS bearer context requests to UE, is taken in EPS bearer context requests are changed
New IP address with UE.
Step 902：MME initiates eRAB modification requests to eNodeB, and new SGW UPF are carried in eRAB modification requests
User plane transmits address and newly assigned SGW TEID-U.
Step 903：ENodeB returns to modification eRAB modification responses to MME.
Step 904：UE session management module returns to modification EPS bearer context received messages to CPF.Now, UE can
To use new IP address accessing data service.
Step 905：MME returns to the response of more new bearer to SGW.
Figure 10 is the composition structural representation for the device that the present invention realizes user plane functions management, as shown in Figure 10, at least
Including decision-making module, processing module, wherein,
Decision-making module, for determining to need to migrate the user path of terminal according to the strategy pre-set, its
In, terminal is accessed network, and the terminal of data forwarding paths has been established on some UPF；
Processing module, for control current end user path from the UPF for having established data forwarding paths migrate to
Target UPF.
The present invention realizes that the device of user plane functions management can be that an independent community in network is as mentioned above
UTF or the One function being arranged in existing network element, for example be arranged in GwC as shown in Figure 2, or set
In some CPF as shown in Figure 4.
Wherein, the strategy pre-set can include but is not limited to：Detect user's current business path be not it is optimal,
Or operator upgrades for operation maintenance demand or the UPF of offline currently-established data forwarding paths, or operator for
Economize on electricity considers closing or partly closes the UPF of currently-established data forwarding paths, or currently-established data forwarding paths
UPF loads it is too high need unload sub-load etc..
Alternatively,
Processing module is specifically used for：Target UPF marks are passed to the UPF of the currently-established data forwarding paths of terminal.
Further, processing module is additionally operable to：By for indicating whether distribute IP address again for UE in transition process
Migrate UPF or target UPF of the type transfer to the currently-established data forwarding paths of terminal.
Or processing module is specifically used for：The migration for receiving the UPF for carrying out the currently-established data forwarding paths of self terminal is true
After recognizing, migration request is initiated to target UPF；Receive and move into response from target UPF, to the currently-established data forwarding of terminal
The UPF in path returns to instruction of moving out.
Alternatively,
Decision-making module is additionally operable to：Obtained from the UPF or third party's shared data bank of the currently-established data forwarding paths of terminal
The business model that terminal is current is taken, and judges that the UPF of the currently-established data forwarding paths of terminal is according to the business model
It is non-optimal.
Figure 11 is the composition structural representation of network element of the present invention, and as shown in figure 11, the network element is as user plane functions, at least
Including forwarding module, respond module is migrated；
When the network element of the user plane functions, which is used as, moves out UPF, wherein,
Forwarding module, for establishing data forwarding paths with terminal, and carry out the transmission of user data；
Respond module is migrated, under UTF control, the user for the terminal for there are data forwarding paths being established with itself
Path Migration is to target UPF.
Alternatively, migration respond module is specifically used for：
The target UPF marks from UTF are received, is identified according to target UPF, user data path information is sent to mesh
Mark UPF.
Further, migration respond module is additionally operable to：The migration type from UTF is received, migration type is sent to
Target UPF.
Or migration respond module is specifically used for：
When receiving the migration request from UTF, migration confirmation is sent to UTF.Further, it is additionally operable to：Receiving
When being asked to moving out from UTF, user data path information is sent to shared data bank.
And/or
When this is used as the network element of user plane functions moves into the i.e. target UPF of UPF, wherein,
Forwarding module, for establishing data forwarding paths with terminal, and carry out the transmission of user data；
Respond module is migrated, under UTF control, the user path of terminal to be had into data forwarding from terminal foundation
The UPF in path is migrated to network element where itself.
Wherein,
Respond module is migrated, specifically for preserving the user data path information received and issuing subscriber's main station route,
So that migration of subscriber data is to user plane functions network element where itself.
Further,
Migration respond module is additionally operable to：Migration type is received, redistributes IP address for the terminal, and pass via CPF
Pass terminal.
Or migration respond module is specifically used for：
The migration request from UTF is received, the user data path information that terminal is obtained from shared data bank is concurrent
Cloth subscriber's main station is route, so that migration of subscriber data is to user plane functions network element where itself.
Further,
Migration respond module is additionally operable to：After issuing subscriber's main station route, new number is redistributed for the data connection of terminal
According to Tunnel Identifier；Via CPF modification data tunnel mark is asked to RAN.
The present invention also provides a kind of network element, as chain of command function, including at least the first update module, for receiving number
According to Tunnel Identifier, modification data tunnel mark is asked to RAN.
Alternatively, the first update module is additionally operable to：The IP address of terminal is received, the IP of terminal is passed to corresponding whole
End.
The present invention also provides a kind of terminal, including at least the second update module, for former using IP address renewal is received
There is the IP address of session, use the IP address accessing data service after renewal.
It is described above, it is only the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all this
Within the spirit and principle of invention, any modification, equivalent substitution and improvements done etc., the protection model of the present invention should be included in
Within enclosing.
Claims (30)
1. a kind of method for realizing user plane functions management, accessing terminal to network, has established data forwarding road on some UPF
Footpath, it is characterised in that including：
UPF shift functions UTF determines to need to migrate the user path of the terminal according to the strategy pre-set；
UTF controls current end user path is migrated to target UPF from the UPF for having established data forwarding paths.
2. according to the method for claim 1, it is characterised in that the UTF control current end user path from it is described
The UPF for establishing data forwarding paths is migrated to target UPF and included：
The UTF passes to target UPF marks the UPF of the currently-established data forwarding paths of terminal；
The UPF of the currently-established data forwarding paths of terminal is identified according to target UPF, and user data path information is sent
To the target UPF；
The target UPF preserves user data path information and simultaneously issues subscriber's main station route, so that migration of subscriber data is to target
UPF。
3. according to the method for claim 2, it is characterised in that target UPF marks have been passed to terminal currently by the UTF
When establishing the UPF of data forwarding paths, in addition to：
The UTF is by for indicating whether distribute the migration type transfer of IP address to the terminal again for UE in transition process
The UPF of currently-established data forwarding paths；
The UPF of the currently-established data forwarding paths of terminal is sent to target UPF by type is migrated；
If migration type is shown as needing distributing IP address again for UE, the target UPF is that the terminal redistributes IP address,
And pass to the terminal via CPF.
4. according to the method for claim 1, it is characterised in that the UTF controls current end user path from having established
The UPF of data forwarding paths, which is migrated to target UPF, to be included：
After the UTF receives the migration confirmation of the UPF from the currently-established data forwarding paths of the terminal, to the target
UPF initiates migration request；
The target UPF obtains the user data path information of terminal from shared data bank and issues subscriber's main station route, with
Make migration of subscriber data to target UPF.
5. according to the method for claim 4, it is characterised in that when the UTF is to target UPF initiation migration requests,
Also include：
The UTF is by for indicating whether distribute the migration type transfer of IP address to the target again for UE in transition process
UPF；
If migration type is shown as needing distributing IP address again for UE, the target UPF is that the terminal redistributes IP address,
And pass to the terminal via CPF.
6. according to the method for claim 4, it is characterised in that the target UPF obtains terminal from shared data bank
Before user data path information, in addition to：
The UPF of the currently-established data forwarding paths of terminal receive from UTF moving out request when, by user data
Routing information is sent to the shared data bank.
7. according to the method described in any one of claim 1~6, it is characterised in that also include：The currently-established number of terminal
The related Host routes of user are deleted according to the UPF of forward-path.
8. according to the method described in any one of claim 2~6, it is characterised in that the target UPF issues subscriber's main station route
Afterwards, in addition to：
The target UPF is that new data tunnel mark is redistributed in the data connection of terminal.
9. according to the method for claim 8, it is characterised in that also include：The target UPF notices CPF uses the number
The data tunnel information of the terminal is changed according to Tunnel Identifier.
10. according to the method described in claim 1,2 or 4, it is characterised in that the accessing terminal to network, built on some UPF
Stand after there are data forwarding paths, the UTF determines to need to enter the user path of the terminal according to the strategy pre-set
Before row migration, in addition to：
The UTF obtains the end from the UPF or third party's shared data bank of the currently-established data forwarding paths of the terminal
Current business model is held, and judges that the UPF of the currently-established data forwarding paths of the terminal is according to the business model
It is non-optimal.
A kind of 11. device for realizing user plane functions management, it is characterised in that including decision-making module, processing module, wherein,
Decision-making module, for determining to need to migrate the user path of terminal according to the strategy pre-set, wherein, eventually
Hold as accessed network, and the terminal of data forwarding paths has been established on some UPF；
Processing module, for controlling current end user path to be migrated from the UPF for having established data forwarding paths to target
UPF。
12. device according to claim 11, it is characterised in that described device is an independent community in network, or
Person is provided in the One function in existing network element.
13. device according to claim 11, it is characterised in that the processing module is specifically used for：Target UPF is identified
Pass to the UPF of the currently-established data forwarding paths of the terminal.
14. device according to claim 11, it is characterised in that the processing module is specifically used for：Receive from described
After the UPF of the currently-established data forwarding paths of terminal migration confirms, migration request is initiated to target UPF；Reception comes from mesh
Mark UPF's moves into response, and instruction of moving out is returned to the UPF of the currently-established data forwarding paths of the terminal.
15. device according to claim 11, it is characterised in that the processing module is additionally operable to：Instruction migration will be used for
During whether distribute the migration type transfer of IP address to the currently-established data forwarding paths of the terminal again for UE
UPF or target UPF.
16. according to the device described in any one of claim 11~15, it is characterised in that the decision-making module is additionally operable to：From institute
State the UPF of the currently-established data forwarding paths of terminal or third party's shared data bank obtains the current business model of terminal, and
Judge that the UPF of the currently-established data forwarding paths of the terminal is non-optimal according to the business model.
17. a kind of network element, as user plane functions, it is characterised in that including forwarding module, migrate respond module；Wherein,
Forwarding module, for establishing data forwarding paths with terminal, and carry out the transmission of user data；
Respond module is migrated, under UTF control, the user path for the terminal for there are data forwarding paths being established with itself
Migrate to target UPF.
18. network element according to claim 17, it is characterised in that the migration respond module is specifically used for：Receive and
Identified from UTF target UPF, identified according to target UPF, user data path information is sent to the target UPF.
19. the network element according to claim 17 or 18, it is characterised in that the migration respond module is additionally operable to：Receive
Migration type from UTF, migration type is sent to the target UPF.
20. network element according to claim 17, it is characterised in that the migration respond module is specifically used for：Receive and
From UTF migration request when, will migration confirmation be sent to UTF.
21. network element according to claim 20, it is characterised in that the migration respond module is additionally operable to：Come receiving
From UTF move out request when, user data path information is sent to shared data bank.
22. a kind of network element, as user plane functions, it is characterised in that including forwarding module, migrate respond module；Wherein,
Forwarding module, for establishing data forwarding paths with terminal, and carry out the transmission of user data；
Respond module is migrated, under UTF control, the user path of terminal to be had into data forwarding paths from terminal foundation
UPF migrate to network element where itself.
23. network element according to claim 22, it is characterised in that the migration respond module is specifically used for：Preserve and receive
To user data path information and issue subscriber's main station route so that migration of subscriber data is to user plane functions net where itself
Member.
24. network element according to claim 23, it is characterised in that the migration respond module is additionally operable to：Receive display
To need to be migration type that UE distributes IP address again, IP address is redistributed for the terminal, and pass to institute via CPF
State terminal.
25. network element according to claim 22, it is characterised in that the migration respond module is specifically used for：
The migration request from UTF is received, the user data path information of terminal is obtained from shared data bank and issues use
Family Host routes, so that migration of subscriber data is to user plane functions network element where itself.
26. according to the network element described in any one of claim 23~25, it is characterised in that the migration respond module is additionally operable to：
After issuing subscriber's main station route, new data tunnel mark is redistributed for the data connection of the terminal；Via CPF to RAN
Request modification data tunnel mark.
27. a kind of network element, it is characterised in that including the network element described in claim any one of 17~claim 21, Yi Jiquan
Profit requires the network element described in any one of 22~claim 26.
28. a kind of network element, as chain of command function, it is characterised in that including the first update module, for receiving data tunnel
Mark, modification data tunnel mark is asked to RAN.
29. network element according to claim 28, it is characterised in that first update module is additionally operable to：Receive terminal
IP address, the IP of terminal is passed into counterpart terminal.
30. a kind of terminal, it is characterised in that including the second update module, for receiving IP address, update the IP of original session
Address, use the IP address accessing data service of renewal.
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| CN201610867946.7A CN107888498A (en) | 2016-09-29 | 2016-09-29 | Realize the method and device and network element and device of user plane functions management |
| PCT/CN2017/091194 WO2018059043A1 (en) | 2016-09-29 | 2017-06-30 | Method and device, network element and device for implementing user plane function management |
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