CN109548186A - The method for relocating and device, readable storage medium storing program for executing and equipment of PDU session anchor point - Google Patents
The method for relocating and device, readable storage medium storing program for executing and equipment of PDU session anchor point Download PDFInfo
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- CN109548186A CN109548186A CN201710631862.8A CN201710631862A CN109548186A CN 109548186 A CN109548186 A CN 109548186A CN 201710631862 A CN201710631862 A CN 201710631862A CN 109548186 A CN109548186 A CN 109548186A
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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
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/659—Internet protocol version 6 [IPv6] addresses
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- Computer Networks & Wireless Communication (AREA)
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Abstract
A kind of method for relocating and device, readable storage medium storing program for executing and equipment of PDU session anchor point, the method for relocating include: to select new PDU session anchor point when determining to initiate the reorientation of anchor point；Present Access tunnel information is sent to the new PDU session anchor point；Core network tunnels are obtained, and core network tunnels information is sent to present Access, so that the present Access establishes connection according to the core network tunnels information update core network tunnels and with the new PDU session anchor point.Above scheme can reduce the time delay and signaling overheads of single PSA reorientation of SSC2 mode, shorten service disconnection duration.
Description
Technical field
The present embodiments relate to wireless communication field more particularly to a kind of method for relocating and dress of PDU session anchor point
It sets, readable storage medium storing program for executing and equipment.
Background technique
User terminal (User Equipment, UE) is connected to 5G core net by accessing net, passes through connecing for 5G core net
Enter other nodes that mobile management (AMF) node is connected to 5G core net, such as conversation management functional (SMF) node etc..It is logical
Cross user plane functions (User Plane Function, UPF) node and data network (Digital Network, DN) transmission number
According to.
One protocol Data Unit (Protocol Data Unit, PDU) session can be saved by one or more UPF
Point is connected to data network by different N6 interfaces, and UPF node corresponding with N6 interface plays PDU session anchor point (PDU
Session Anchor, PSA) effect.
In 5G network, the conversation type of PDU includes the types such as IPv4, IPv6.When the conversation type of PDU is IPv6 type
When, SMF node is UE distribution one or more IPv6 prefix (IPv6Prefix) as the case may be, and is sent out by UPF node
Give UE.Currently, 3GPP defines three kinds of different sessions and business continuity sexual norm (Session and Service
Continuity, SSC), it is followed successively by SSC1 mode, SSC2 mode and SSC3 mode.
In a PDU session, SSC2 mode is characterized in front of UE and new PDU session anchor point establish connection, disconnects
With the connection of old PDU session anchor point.If the PDU session is IP type, IP address may change, it is also possible to keep not
Become.Currently, the scheme of the PDU meeting ticket PDU session anchor point reorientation of SSC2 mode is first to discharge old PDU session to resettle newly
PDU session will cause bigger delay and signaling overheads however, discharging old session and resettling new session, lead to business
Break period is longer.
Summary of the invention
What the embodiment of the present invention solved is how to reduce the time delay and signaling overheads of single PSA reorientation of SSC2 mode, contracting
Short service disconnection duration.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of method for relocating of PDU session anchor point, comprising:
When determining to initiate the reorientation of anchor point, new PDU session anchor point is selected；Present Access tunnel information is sent to described new
PDU session anchor point；Core network tunnels are obtained, and core network tunnels information is sent to present Access, so that described currently connect
It networks according to the core network tunnels information update core network tunnels and establishes connection with the new PDU session anchor point.
Optionally, after the present Access and the new PDU session anchor point establish connection, further includes: release is old
The corresponding PDU session of PDU session anchor point and resource, and notify the corresponding money of the old PDU session anchor point release PDU session
Source.
Optionally, after selecting new PDU session anchor point, further includes: distribute new IPv6 prefix for user terminal；It is releasing
The corresponding PDU session of old PDU session anchor point and corresponding resource are put, and notifies the old PDU session anchor point release PDU session
Before corresponding resource, further includes: notify the user terminal to discharge old IPv6 prefix, and the new IPv6 prefix is sent out
It send to the user terminal.
Optionally, described that the user terminal is notified to discharge old IPv6 prefix, comprising: via the old PDU session anchor
Point or the new PDU session anchor point, notify the user terminal to discharge the old IPv6 prefix.
Optionally, described that the user terminal is notified to discharge the old IPv6 prefix, comprising: to be routed by IPv6 wide
Accuse, notify the user terminal to discharge the old IPv6 prefix, the expected time in the IPv6 route advertisement and it is effective when
Between be disposed as 0.
Optionally, described that the user terminal is notified to discharge the old IPv6 prefix, comprising: by DHCPv6 message,
The user terminal is notified to discharge the old IPv6 prefix.
Optionally, described that the new IPv6 prefix is sent to the user terminal, comprising: to determine that the user is whole
End is completed after discharging the old IPv6 prefix, via the old PDU session anchor point or the new PDU session anchor point, by institute
It states new IPv6 prefix and is sent to the user terminal.
Optionally, described that the new IPv6 prefix is sent to the user terminal, comprising: to be routed by IPv6 wide
It accuses, the new IPv6 prefix is sent to the user terminal.
Optionally, described that the new IPv6 prefix is sent to the user terminal, comprising: by DHCPv6 message,
The new IPv6 prefix is sent to the user terminal.
Optionally, it uses and obtains core network tunnels described in following any method: distributing the core for current PDU session
Net tunnel；Or, receiving the core network tunnels that the new PDU session anchor point is current PDU session distribution.
The embodiment of the invention also provides a kind of relocation devices of PDU session anchor point, comprising: selecting unit, for working as
When determining to initiate the reorientation of anchor point, new PDU session anchor point is selected；First transmission unit, for believing present Access tunnel
Breath is sent to the new PDU session anchor point；Acquiring unit, for obtaining core network tunnels；Second transmission unit is used for core
Net tunnel information is sent to present Access, so that the present Access is according to the core network tunnels information update core net
Connection is simultaneously established with the new PDU session anchor point in tunnel.
Optionally, the relocation device of the PDU session anchor point further include: releasing unit, for discharging old PDU session anchor
The corresponding PDU session of point and resource；First notification unit, for notifying the old PDU session anchor point release PDU session corresponding
Resource.
Optionally, the relocation device of the PDU session anchor point further include: allocation unit, for being distributed for user terminal
New IPv6 prefix；Second notification unit, for notifying the user terminal to discharge old IPv6 prefix, and will be described new
IPv6 prefix is sent to the user terminal.
Optionally, second notification unit is used for via the old PDU session anchor point or the new PDU session anchor point,
The user terminal is notified to discharge the old IPv6 prefix.
Optionally, second notification unit, for notifying described in the user terminal release by IPv6 route advertisement
Old IPv6 prefix, expected time and effective time in the IPv6 route advertisement are disposed as 0.
Optionally, second notification unit, for notifying the user terminal release described old by DHCPv6 message
IPv6 prefix.
Optionally, second notification unit, for before determining that the user terminal is completed to discharge the old IPv6
After sewing, via the old PDU session anchor point or the new PDU session anchor point, the new IPv6 prefix is sent to described
User terminal.
Optionally, second notification unit, for by IPv6 route advertisement, the new IPv6 prefix to be sent to
The user terminal.
Optionally, second notification unit, for by DHCPv6 message, the new IPv6 prefix to be sent to institute
State user terminal.
Optionally, the acquiring unit, for using following any method to obtain core network tunnels: for current PDU meeting
Words distribute the core network tunnels；Or, receiving the core net tunnel that the new PDU session anchor point is current PDU session distribution
Road.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer instruction, described
The step of method for relocating of PDU session anchor point described in executing any of the above-described kind when computer instruction operation.
The embodiment of the invention also provides a kind of electronic equipment, including memory and processor, stored on the memory
There is the computer instruction that can be run on the processor, the computer instruction executes described in any of the above-described kind when running
The step of method for relocating of PDU session anchor point.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantages that
After selecting new PDU session anchor point, present Access tunnel information is sent to new PDU session anchor point, by core
Heart net tunnel information is sent to present Access, believes so that completing corresponding tunnel between new PDU session anchor point and present Access
The connection between new PDU session anchor point and access net is established in the exchange of breath.During the reorientation of new PDU session anchor point, protect
It holds PDU session not discharge, therefore the time delay and signaling overheads of new PDU session anchor point reorientation can be reduced, shorten service disconnection
Duration.
Further, new IPv6 prefix is distributed if user terminal, then before completion is established in connection, discharges old IPv6
Prefix, and new IPv6 prefix is sent to the user terminal, it is ensured that user terminal can work normally.
In addition, discharging the corresponding PDU meeting of old PDU session anchor point after access net and new PDU session anchor point establish connection
Words and the corresponding resource of old PDU session anchor point, and notify the corresponding resource of the corresponding PDU session of old PDU session anchor point release,
The level of resources utilization can be improved.
Detailed description of the invention
Fig. 1 is the flow chart of the method for relocating of one of embodiment of the present invention PDU session anchor point；
Fig. 2 is the flow chart of the method for relocating of another PDU session anchor point in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the relocation device of one of embodiment of the present invention PDU session anchor point.
Specific embodiment
In the prior art, PDU conversation type contains IPv4 type, IPv6 type, Ethernet (Ethernet) type
And inorganization (Unstructured) type, being also not excluded for 3GPP future certainly does and extends.If PDU conversation type is IPv6 class
Type, SMF node can distribute one or more IPv6 prefix (IPv6Prefix) as the case may be for user terminal, and lead to
UPF node is crossed to be sent to the user terminal.
Currently, 3GPP defines three kinds of different SSC modes, it is followed successively by SSC1 mode, SSC2 mode and SSC3 mode.
For SSC1 mode, which kind of access technology no matter PDU session anchor point upon setting the session, use, and PDU session anchor point is kept not
Become, if the PDU session is IP type, IP address is constant.For SSC2 mode, built in user terminal and new PDU session anchor point
Before vertical connection, can disconnect with old PDU session, if the PDU session is IP type, the IP address of user terminal may
Change, it is also possible to remain unchanged.For SSC3 mode, user terminal first with new PDU session anchor point establishes connection, be then turned off with
The connection of old PDU session anchor point can pass through old PDU session anchor point before disconnecting the connection with old PDU session anchor point simultaneously
Data are transmitted with new PDU session anchor point；If the IP address of IP type when the PDU session, user terminal may change, it is also possible to
It is constant.
Currently, the scheme of the PDU meeting ticket PDU session anchor point reorientation of SSC2 mode is first to discharge old PDU session to build again
New PDU session is stood, bigger delay and signaling overheads is will cause however, discharging old session and resettling new session, causes
Business interruption time is longer.
In embodiments of the present invention, after selecting new PDU session anchor point, present Access tunnel information is sent to newly
Core network tunnels information is sent to present Access by PDU session anchor point, so that complete between new PDU session anchor point and access net
At the exchange of corresponding tunnel information, the connection between new PDU session anchor point and access net is established.It is reset in new PDU session anchor point
During position, PDU session is kept not discharge, therefore the time delay and signaling overheads of new PDU session anchor point reorientation can be reduced,
Shorten service disconnection duration.
It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent, with reference to the accompanying drawing to this
The specific embodiment of invention is described in detail.
In specific implementation, 5G network described in the embodiment of the present invention refers to: core net is the network of 5G core net.This hair
Access net described in bright embodiment (Access Network, AN) can be at least one of following access net: based on long-term
The access net of evolution (Long Term Evolution, LTE) technology, the access net for the technology that is also possible to be eated dishes without rice or wine based on 5G, may be used also
To be attached to the non-3 GPP access network of 5G core net.User terminal signaling is connected to 5G core net by accessing net, passes through 5G
The AMF node of core net is connected to other nodes of 5G core net, such as SMF node, and data are connected to 5G core by accessing net
The UPF of heart net, then pass through UPF connecting band data network (DN).
The embodiment of the invention provides a kind of method for relocating of PDU session anchor point, referring to Fig.1, below by way of specific step
Suddenly it is described in detail.
Step S101 selects new PDU session anchor point when determining to initiate the reorientation of anchor point.
In specific implementation, before executing step S101, user terminal and network side have been set up an IPv6 class
The PDU session of type, and mode is 2 mode of SSC.SMF node is that user terminal is assigned with an IPv6 prefix 1.The PDU session
Only one PDU session anchor point UPF1.User terminal and data network (DN) are carried out data transmission by access net, UPF1.
It in specific implementation, can be with when SMF node, which is determined as user terminal, reselects a new PDU session anchor point
The reorientation of PDU session anchor point is initiated, is the new PDU session anchor point of user terminal selecting.
Present Access tunnel information is sent to the new PDU session anchor point by step S102.
In specific implementation, SMF node can by current access net tunnel information (AN Tunnel Info) and its
His information is sent to new PDU session anchor point.
Step S103 obtains core network tunnels.
In specific implementation, it is current PDU session distribution that core network tunnels (CN Tunnel), which can be SMF node,
Can be by new PDU session anchor point is current PDU session distribution.
When SMF node is that current PDU session distributes core network tunnels, SMF node is needed core network tunnels information (CN
Tunnel Info) it is sent to new PDU session anchor point, enable new PDU session anchor point to know core network tunnels information.
When core network tunnels be by new PDU session anchor point be current PDU session distribution when, new PDU session anchor point need by
Core network tunnels information is sent to SMF node, and SMF node is enabled to know core network tunnels information.
That is, it is current PDU session distribution that no matter core network tunnels, which are by SMF node, or by new PDU session anchor
Point is that current PDU session distributes, and the two is required to for core network tunnels information to be sent to other side, so that SMF node and new
PDU session anchor point can know core network tunnels information.
Core network tunnels information is sent to present Access by step S104.
In specific implementation, core network tunnels information is sent to present Access by SMF node.Access net is receiving core
After heart net tunnel information, according to core network tunnels information update core network tunnels.At this point, new PDU session anchor point and access net
The exchange of corresponding tunnel information is completed, to realize that access net and new PDU session anchor point establish connection, completes new PDU session anchor
The replacement of point.
In specific implementation, after accessing net and new PDU session anchor point establishes connection, SMF node can discharge old PDU
The corresponding PDU session of session anchor point and resource.In addition, SMF node can also send release notice to old PDU session anchor point,
To notify the corresponding resource of old PDU session anchor point release PDU session.SMF node, which passes through, discharges the corresponding resource of old PDU session,
The level of resources utilization of SMF node can be improved.SMF node notifies the corresponding resource of old PDU session anchor point, can be improved old
The level of resources utilization of PDU session anchor point.
In specific implementation, SMF node can be user terminal after for the new PDU session anchor point of user terminal selecting
It distributes a new IPv6 prefix, the IPv6 prefix of user terminal can also be kept constant, i.e., it is not new for user terminal distribution
IPv6 prefix.
If SMF node is that user terminal distributes new IPv6 prefix, SMF node is corresponding in the old PDU session anchor point of release
PDU session and resource, and before notifying the corresponding resource of old PDU session anchor point release PDU session, can also notify user
Terminal discharges old IPv6 prefix, and new IPv6 prefix is sent to the user terminal.
For example, the old IPv6 prefix of user terminal is IPv6 prefix 1.In the reorientation of PDU session anchor point, SMF node
Distributing new IPv6 prefix for user terminal is IPv6 prefix 2.SMF node is discharging the corresponding PDU session of old PDU session anchor point
And resource, and before notifying the corresponding resource of old PDU session anchor point release PDU session, before notice user terminal release IPv6
Sew 1, and IPv6 prefix 2 is sent to the user terminal.
In specific implementation, before SMF node can notify user terminal to discharge old IPv6 via old PDU session anchor point
Sew, user terminal can also be notified to discharge old IPv6 prefix via new PDU session anchor point.SMF node can pass through the road IPv6
By advertisement (IP v6Routing Advertisement), Lai Tongzhi user terminal discharges old IPv6 prefix, can be on the road IPv6
By in advertisement, expected time (preferred lifetime) and effective time (valid lifetime) are disposed as 0.
It is understood that SMF node can also discharge old by other kinds of message, Lai Tongzhi user terminal
IPv6 prefix.For example, SMF node passes through dynamic host configuration protocol (Dynamic Host Configuration
Protocol, DHCP) v6 message, Lai Tongzhi user terminal discharges old IPv6 prefix.It in practical applications, can be according to reality
Demand, to select type of message, to inform that user terminal discharges old IPv6 prefix.
In specific implementation, after SMF node determines that user terminal is completed to discharge old IPv6 prefix, SMF node can
It, can also be by new PDU session anchor point to user to send new IPv6 prefix to user terminal by old PDU session anchor point
Terminal sends new IPv6 prefix.
SMF node can pass through the road IPv6 when sending new IPv6 prefix to user terminal via old PDU session anchor point
New IPv6 prefix is sent by advertisement.Analogously, SMF node is being sent newly via new PDU session anchor point to user terminal
When IPv6 prefix, new IPv6 prefix can also be sent by IPv6 route advertisement.In IPv6 route advertisement, the expected time
(preferred lifetime) and effective time (valid lifetime) can be disposed as 0.
It is understood that SMF node can also be by other kinds of message, to send new IPv6 to user terminal
Prefix.For example, SMF node sends new IPv6 prefix to user terminal by DHCPv6 message.In practical applications, Ke Yigen
The type of message that new IPv6 prefix is sent to user terminal is selected according to actual application scenarios.
In IPv6 route advertisement, expected time and effective time may be set to be other values.In practical applications, may be used
With the expected time and effective time being arranged in IPv6 route advertisement according to actual application scenarios.
It can be seen that present Access tunnel information is sent to new PDU session after selecting new PDU session anchor point
Core network tunnels information is sent to present Access by anchor point, so that the corresponding tunnel of completion between new PDU session anchor point and access net
The connection between new PDU session anchor point and access net is established in the exchange of road information.In the process of new PDU session anchor point reorientation
In, it keeps PDU session not discharge, therefore the time delay and signaling overheads of new PDU session anchor point reorientation can be reduced, shortens business
Interrupt duration.
The method for relocating of the PDU session anchor point provided in the above embodiment of the present invention is specifically described below.Ginseng
According to Fig. 2, the method for relocating of another PDU session anchor point in the embodiment of the present invention is given, is said below in conjunction with Fig. 1
It is bright.
Before the method for relocating to PDU session anchor point is illustrated, user terminal and network side have been set up one
The PDU session of a IPv6 type, and mode is SSC2 mode.SMF node is that user terminal is assigned with an IPv6 prefix 1.It should
Only one PDU session anchor point of PDU session UPF1.User can be carried out data transmission by access net, UPF1 and data network.
Step S201, SMF node determines to initiate the reorientation of anchor point.
Step S202, SMF node selects UPF2, and distributes new IPv6 prefix for user terminal.
To distinguish old PDU session anchor point UPF1, new PDU session anchor point that SMF node selects is set as UPF2.
For the IPv6 prefix 1 for before difference being user terminal distribution, SMF node is that user terminal distributes a new IPv6
Prefix is IPv6 prefix 2.
Step S203, SMF node is sent to UPF2 for net tunnel information is accessed.
Access net tunnel information and other parameters information can be sent to UPF2 by SMF node.
Step S204 discharges IPv6 prefix 1 via UPF1 notice user terminal.
CN channel information is sent to access net by AMF node by step S205, SMF node.
In specific implementation, the tunnel CN is distributed by SMF node or UPF2.CN tunnel information is sent to by SMF node
Access net.
IPv6 prefix 2 is sent to user terminal by UPF2 by step S206, SMF node.
Step S207, SMF node discharges the corresponding PDU session of UPF1 and resource.
Step S208, SMF node notifies the corresponding resource of UPF1 release PDU session.
Referring to Fig. 3, the relocation device of one of embodiment of the present invention PDU session anchor point is given.The PDU session
The relocation device 30 of anchor point may include: selecting unit 301, the first transmission unit 302, acquiring unit 303 and the second hair
Send unit 304, in which:
Selecting unit 301, for selecting new PDU session anchor point when determining to initiate the reorientation of anchor point；
First transmission unit 302, for present Access tunnel information to be sent to the new PDU session anchor point；
Acquiring unit 303, for obtaining core network tunnels；
Second transmission unit 304, for core network tunnels information to be sent to present Access, so that described be currently accessed
Net establishes connection according to the core network tunnels information update core network tunnels and with the new PDU session anchor point.
In specific implementation, the relocation device 30 of the PDU session anchor point can also include: releasing unit 305, be used for
Discharge the corresponding PDU session of old PDU session anchor point and resource；First notification unit 306, for notifying the old PDU session
Anchor point discharges the corresponding resource of PDU session.
In specific implementation, the relocation device 30 of the PDU session anchor point can also include: allocation unit 307, be used for
New IPv6 prefix is distributed for the user terminal；Second notification unit (not shown), for notifying the user terminal
Old IPv6 prefix is discharged, and the new IPv6 prefix is sent to the user terminal.
In specific implementation, second notification unit can be used for via the old PDU session anchor point or described new
PDU session anchor point notifies the user terminal to discharge the old IPv6 prefix.
In specific implementation, second notification unit can be used for notifying that the user is whole by IPv6 route advertisement
End discharges the old IPv6 prefix, and the expected time and effective time in the IPv6 route advertisement are disposed as 0.
In specific implementation, second notification unit can be used for notifying the user terminal by DHCPv6 message
Discharge the old IPv6 prefix.
In specific implementation, second notification unit can be used for determining described in the user terminal completion release
After old IPv6 prefix, via the old PDU session anchor point or the new DPU session anchor point, by the new IPv6 prefix
It is sent to the user terminal.
In specific implementation, second notification unit can be used for through IPv6 route advertisement, by the new IPv6
Prefix is sent to the user terminal.
In specific implementation, second notification unit can be used for through DHCPv6 message, before the new IPv6
Sew and is sent to the user terminal.
In specific implementation, the acquiring unit 303 can be used for obtaining core net tunnel using following any method
Road: the core network tunnels are distributed for current PDU session；Or, receiving the new PDU session anchor point as current PDU session distribution
The core network tunnels.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer instruction, described
Computer instruction executes the step of the method for relocating of the PDU session anchor point provided in the above embodiment of the present invention when running
Suddenly.
The embodiment of the invention also provides a kind of electronic equipment, including memory and processor, stored on the memory
There is the computer instruction that can be run on the processor, the computer instruction executes in the above embodiment of the present invention when running
The step of method for relocating of the PDU session anchor point provided.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with indicating relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (22)
1. a kind of method for relocating of PDU session anchor point characterized by comprising
When determining to initiate the reorientation of anchor point, new PDU session anchor point is selected；
Present Access tunnel information is sent to the new PDU session anchor point；
Obtain core network tunnels, and core network tunnels information be sent to present Access so that the present Access according to
The core network tunnels information update core network tunnels simultaneously establish connection with the new PDU session anchor point.
2. the method for relocating of PDU session anchor point as described in claim 1, which is characterized in that the present Access with
The new PDU session anchor point is established after connection, further includes:
The corresponding PDU session of old PDU session anchor point and resource are discharged, and notifies the old PDU session anchor point release PDU session
Corresponding resource.
3. the method for relocating of PDU session anchor point as claimed in claim 2, which is characterized in that
After selecting new PDU session anchor point, further includes: distribute new IPv6 prefix for user terminal；
The old corresponding PDU session of PDU session anchor point and corresponding resource are being discharged, and the old PDU session anchor point is notified to release
Before putting the corresponding resource of PDU session, further includes: notify that the user terminal discharges old IPv6 prefix, and will be described new
IPv6 prefix is sent to the user terminal.
4. the method for relocating of PDU session anchor point as claimed in claim 3, which is characterized in that described to notify that the user is whole
End discharges old IPv6 prefix, comprising:
Via the old PDU session anchor point or the new PDU session anchor point, the user terminal is notified to discharge the old IPv6
Prefix.
5. the method for relocating of PDU session anchor point as claimed in claim 4, which is characterized in that described to notify that the user is whole
End discharges the old IPv6 prefix, comprising:
By IPv6 route advertisement, notify that the user terminal discharges the old IPv6 prefix, in the IPv6 route advertisement
Expected time and effective time be disposed as 0.
6. the method for relocating of PDU session anchor point as claimed in claim 4, which is characterized in that described to notify that the user is whole
End discharges the old IPv6 prefix, comprising:
By DHCPv6 message, the user terminal is notified to discharge the old IPv6 prefix.
7. the method for relocating of PDU session anchor point as claimed in claim 3, which is characterized in that described by the new IPv6
Prefix is sent to the user terminal, comprising:
After determining that the user terminal is completed to discharge the old IPv6 prefix, via the old PDU session anchor point or institute
New PDU session anchor point is stated, the new IPv6 prefix is sent to the user terminal.
8. the method for relocating of PDU session anchor point as claimed in claim 6, which is characterized in that described by the new IPv6
Prefix is sent to the user terminal, comprising:
By IPv6 route advertisement, the new IPv6 prefix is sent to the user terminal.
9. the method for relocating of PDU session anchor point as claimed in claim 7, which is characterized in that described by the new IPv6
Prefix is sent to the user terminal, comprising:
By DHCPv6 message, the new IPv6 prefix is sent to the user terminal.
10. the method for relocating of PDU session anchor point as described in claim 1, which is characterized in that using following any method
Obtain the core network tunnels:
The core network tunnels are distributed for current PDU session；
Or, receiving the core network tunnels that the new PDU session anchor point is current PDU session distribution.
11. a kind of relocation device of PDU session anchor point characterized by comprising
Selecting unit, for selecting new PDU session anchor point when determining to initiate the reorientation of anchor point；
First transmission unit, for present Access tunnel information to be sent to the new PDU session anchor point；Acquiring unit is used
In acquisition core network tunnels；
Second transmission unit, for core network tunnels information to be sent to present Access so that the present Access according to
The core network tunnels information update core network tunnels simultaneously establish connection with the new PDU session anchor point.
12. the relocation device of PDU session anchor point as claimed in claim 11, which is characterized in that further include: releasing unit,
For discharging the corresponding PDU session of old PDU session anchor point and resource；
First notification unit, for notifying the corresponding resource of the old PDU session anchor point release PDU session.
13. the relocation device of PDU session anchor point as claimed in claim 12, which is characterized in that further include: allocation unit,
For distributing new IPv6 prefix for user terminal；Second notification unit, for notifying the user terminal to discharge old IPv6
Prefix, and the new IPv6 prefix is sent to the user terminal.
14. the relocation device of PDU session anchor point as claimed in claim 13, which is characterized in that second notification unit,
For notifying the user terminal to discharge the old IPv6 via the old PDU session anchor point or the new PDU session anchor point
Prefix.
15. the relocation device of PDU session anchor point as claimed in claim 14, which is characterized in that second notification unit,
For by IPv6 route advertisement, notifying the user terminal to discharge the old IPv6 prefix, in the IPv6 route advertisement
Expected time and effective time be disposed as 0.
16. the relocation device of PDU session anchor point as claimed in claim 14, which is characterized in that second notification unit,
For notifying the user terminal to discharge the old IPv6 prefix by DHCPv6 message.
17. the relocation device of PDU session anchor point as claimed in claim 13, which is characterized in that second notification unit,
For after determining that the user terminal is completed to discharge the old IPv6 prefix, via the old PDU session anchor point or institute
New PDU session anchor point is stated, the new IPv6 prefix is sent to the user terminal.
18. the relocation device of PDU session anchor point as claimed in claim 17, which is characterized in that second notification unit,
For by IPv6 route advertisement, the new IPv6 prefix to be sent to the user terminal.
19. the relocation device of PDU session anchor point as claimed in claim 17, which is characterized in that second notification unit,
For by DHCPv6 message, the new IPv6 prefix to be sent to the user terminal.
20. the relocation device of PDU session anchor point as claimed in claim 11, which is characterized in that the acquiring unit is used for
It uses following any method to obtain core network tunnels: distributing the core network tunnels for current PDU session；Or, described in receiving
New PDU session anchor point is the core network tunnels of current PDU session distribution.
21. a kind of computer readable storage medium, is stored thereon with computer instruction, which is characterized in that the computer instruction
Perform claim requires the step of method for relocating of 1~10 described in any item PDU session anchor points when operation.
22. a kind of electronic equipment, including memory and processor, it is stored with and can runs on the processor on the memory
Computer instruction, which is characterized in that the computer instruction run when perform claim require 1~10 described in any item PDU
The step of method for relocating of session anchor point.
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| CN201710631862.8A CN109548186B (en) | 2017-07-28 | 2017-07-28 | Method, device, medium and equipment for relocating PDU session anchor point |
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| CN112015566A (en) * | 2019-05-30 | 2020-12-01 | 中国电信股份有限公司 | User plane function switching method, device and system |
| CN112217846A (en) * | 2019-07-10 | 2021-01-12 | 电信科学技术研究院有限公司 | Data transmission method and device |
| CN112543484A (en) * | 2019-09-20 | 2021-03-23 | 维沃移动通信有限公司 | Method and equipment for maintaining service continuity |
| WO2021062622A1 (en) * | 2019-09-30 | 2021-04-08 | Lenovo (Beijing) Limited | Service continuity for pdu session anchor relocation |
| WO2022171131A1 (en) * | 2021-02-15 | 2022-08-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for selecting session anchor for terminal device |
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| CN112015566A (en) * | 2019-05-30 | 2020-12-01 | 中国电信股份有限公司 | User plane function switching method, device and system |
| CN112217846A (en) * | 2019-07-10 | 2021-01-12 | 电信科学技术研究院有限公司 | Data transmission method and device |
| CN112217846B (en) * | 2019-07-10 | 2023-08-29 | 大唐移动通信设备有限公司 | Data transmission method and device |
| CN112543484A (en) * | 2019-09-20 | 2021-03-23 | 维沃移动通信有限公司 | Method and equipment for maintaining service continuity |
| CN112543484B (en) * | 2019-09-20 | 2023-02-21 | 维沃移动通信有限公司 | Method and equipment for maintaining service continuity |
| WO2021062622A1 (en) * | 2019-09-30 | 2021-04-08 | Lenovo (Beijing) Limited | Service continuity for pdu session anchor relocation |
| CN114788341A (en) * | 2019-09-30 | 2022-07-22 | 联想(北京)有限公司 | Service continuity for PDU session anchor relocation |
| CN114788341B (en) * | 2019-09-30 | 2023-11-28 | 联想(北京)有限公司 | Service continuity for PDU session anchor relocation |
| WO2022171131A1 (en) * | 2021-02-15 | 2022-08-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for selecting session anchor for terminal device |
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