CN108307459A - A kind of handoff procedure processing method and RAN node - Google Patents
A kind of handoff procedure processing method and RAN node Download PDFInfo
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- CN108307459A CN108307459A CN201610884652.5A CN201610884652A CN108307459A CN 108307459 A CN108307459 A CN 108307459A CN 201610884652 A CN201610884652 A CN 201610884652A CN 108307459 A CN108307459 A CN 108307459A
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- ran node
- anchor point
- pdu sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
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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
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
A kind of handoff procedure processing method of offer of the embodiment of the present invention and RAN node, this method may include：Target RAN node receives the switching request that source RAN node is initiated, the switching request includes the PDU session contexts of user terminal, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions can only ensure continuity in a certain range；The target RAN node judges whether that the connection of the PDU sessions can be kept；The target RAN node is according to the judgement as a result, returning to handoff response to the source RAN node, the handoff response, which is used to indicate the PDU sessions, can or cannot execute handoff procedure.The processing to PDU sessions in handoff procedure may be implemented in the embodiment of the present invention.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of handoff procedure processing method and wireless access network (RAN,
Radio Access Network) node.
Background technology
With the development of the communication technology, the business for handling more and more types is needed in next generation network (NextGen), and
Many business be all communicated in the form of session (session), such as：Protocol Data Unit (Protocol Data Unit,
PDU).The session that there can be different requirements in communication network is resulted in this way.In addition, in practical applications user terminal (UE,
User Equipment) it is frequently necessary to carry out the switching of RAN, such as：From source, RAN switches to target RAN.But current handoff procedure
In cannot achieve the processing to PDU sessions.
Invention content
The purpose of the present invention is to provide a kind of handoff procedure processing method and RAN nodes, solve nothing in handoff procedure
Method realizes the problem of processing to PDU sessions.
In order to achieve the above object, the embodiment of the present invention provides a kind of handoff procedure processing method, including：
Target RAN node receives the switching request that source RAN node is initiated, and the switching request includes the PDU of user terminal
Session context, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU
Session can only ensure continuity in a certain range；
The target RAN node judges whether that the PDU sessions can be kept；
The target RAN node according to the judgement as a result, to the source RAN node return handoff response, it is described to cut
Handoff procedure can or cannot be executed by changing response and being used to indicate the PDU sessions.
Optionally, if target RAN judgements cannot keep the PDU sessions, the handoff response to indicate the PDU
Session cannot execute handoff procedure, so that the source RAN node deletes the PDU sessions；Or
If the target RAN judgements can keep the PDU sessions, the handoff response to indicate that the PDU sessions can be held
Row handoff procedure, the target RAN node are that the PDU sessions carry out acceptance judging, and reserved resource.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, the target RAN
Node judges whether that the connection of the PDU sessions can be kept, including：
Whether the target RAN node judgement connect with the anchor point, if the target RAN node has with the anchor point
Connection, it is determined that the target RAN node judgement can keep the PDU sessions, if the target RAN node does not have with the anchor point
There is connection, it is determined that the target RAN node judgement cannot keep the PDU sessions.
Optionally, whether the target RAN node judgement connect with the anchor point, including：
Whether the target RAN node judges in preconfigured attachable anchor point information to include the anchor point, if institute
It includes the anchor point to state anchor point information, it is determined that the target RAN node is connect with the anchor point, if the anchor point information
In include the anchor point, it is determined that the target RAN node is not connect with the anchor point；Or
The target RAN node is inquired by domain name system (DNS, Domain Name System) and whether the anchor point
There is connection.
The embodiment of the present invention also provides a kind of handoff procedure processing method, including：
Source RAN node initiates switching request to target RAN node, and the switching request includes the PDU sessions of user terminal
Context, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions
It can only ensure continuity in a certain range；
The source RAN node receives the handoff response that the target RAN node returns, and the handoff response is used to indicate institute
Handoff procedure can or cannot be executed by stating PDU sessions.
Optionally, the method further includes：
If the handoff response indicates that the PDU sessions cannot execute handoff procedure, described in the source RAN node is deleted
PDU sessions.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, so that the mesh
Whether mark RAN node judgement connect with the anchor point, described to cut if the target RAN node is connect with the anchor point
It changes response and indicates that the PDU sessions can execute handoff procedure, it is described to cut if the target RAN is not connect with the anchor point
It changes response and indicates that the PDU sessions cannot execute handoff procedure.
The embodiment of the present invention also provides a kind of RAN node, and the RAN node is target RAN node, including：
Receiving module, the switching request initiated for receiving source RAN node, the switching request includes user terminal
PDU session contexts, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate
PDU sessions can only ensure continuity in a certain range；
Judgment module can keep the PDU sessions for judging whether；
Module is returned, is used for according to the judgement as a result, returning to handoff response, the switching to the source RAN node
Response, which is used to indicate the PDU sessions, can or cannot execute handoff procedure.
Optionally, if target RAN judgements cannot keep the PDU sessions, the handoff response to indicate the PDU
Session cannot execute handoff procedure, so that the source RAN node deletes the PDU sessions；Or
If the target RAN judgements can keep the PDU sessions, the handoff response to indicate that the PDU sessions can be held
Row handoff procedure, the target RAN node are that the PDU sessions carry out acceptance judging, and reserved resource.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, the judgement mould
Block is for judging whether connect with the anchor point, if the target RAN node is connect with the anchor point, it is determined that the mesh
Mark RAN node judgement can keep the PDU sessions, if the target RAN node is not connect with the anchor point, it is determined that described
The judgement of target RAN node cannot keep the PDU sessions.
Optionally, whether the judgment module is for judging in preconfigured attachable anchor point information to include the anchor
Point, if the anchor point information includes the anchor point, it is determined that the target RAN node is connect with the anchor point, if described
Do not include the anchor point in anchor point information, it is determined that the target RAN node is not connect with the anchor point；Or
Whether the judgment module by DNS query with the anchor point for being connect.
The embodiment of the present invention also provides a kind of RAN node, and the RAN node is source RAN node, including：
Sending module, for initiating switching request to target RAN node, the switching request includes the PDU of user terminal
Session context, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU
Session can only ensure continuity in a certain range；
Receiving module, the handoff response returned for receiving the target RAN node, the handoff response are used to indicate institute
Handoff procedure can or cannot be executed by stating PDU sessions.
Optionally, the RAN node further includes：
Removing module, if indicating that the PDU sessions cannot execute handoff procedure for the handoff response, described in deletion
PDU sessions.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, so that the mesh
Whether mark RAN node judgement connect with the anchor point, described to cut if the target RAN node is connect with the anchor point
It changes response and indicates that the PDU sessions can execute handoff procedure, it is described to cut if the target RAN is not connect with the anchor point
It changes response and indicates that the PDU sessions cannot execute handoff procedure.
The above-mentioned technical proposal of the present invention at least has the advantages that：
The embodiment of the present invention, target RAN node receive the switching request that target RAN is sent, and the switching request includes using
The PDU session contexts of family terminal, the PDU session contexts include part continuity instruction, the part continuity instruction
Continuity can only be ensured in a certain range by being used to indicate PDU sessions；Described in the target RAN node judges whether to keep
PDU sessions；The target RAN node according to the judgement as a result, to the source RAN node return handoff response, it is described to cut
Handoff procedure can or cannot be executed by changing response and being used to indicate the PDU sessions.Since target RAN node is returned to source RAN node
The handoff response returned indicates that above-mentioned PDU sessions can or cannot execute handoff procedure, right in handoff procedure so as to realize
The processing of PDU sessions.
Description of the drawings
Fig. 1 is the applicable schematic network structure of the embodiment of the present invention；
Fig. 2 is a kind of flow diagram of handoff procedure processing method provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of another handoff procedure processing method provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of another handoff procedure processing method provided in an embodiment of the present invention；
Fig. 5 is the flow diagram of another handoff procedure processing method provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of RAN node provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of another RAN node provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another RAN node provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of another RAN node provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another RAN node provided in an embodiment of the present invention.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
It is the applicable schematic network structure of the embodiment of the present invention referring to Fig. 1, Fig. 1, as shown in Figure 1, including UE11, source
(source) RAN node 12, target (target) RAN node 13, source core net (source CN) 14 and target core network
(target CN)15.Wherein, UE11 can be mobile phone, tablet computer (Tablet Personal Computer), electricity on knee
Brain (Laptop Computer), personal digital assistant (personal digital assistant, abbreviation PDA), mobile Internet access
The terminal devices such as device (Mobile Internet Device, MID) or wearable device (Wearable Device),
The concrete type of UE11 is not limited in the embodiment of the present invention.Wherein, above-mentioned source RAN node 12 and target RAN node 13 can be with
It is the node for belonging to different RAN, source RAN node 12 and target RAN node 13 can be base station or RAN equipment, need
It is bright, the concrete type of source RAN node 12 and target RAN node 13 is not limited in embodiments of the present invention.In addition, Fig. 1
In different core nets connected with source RAN node 12 and target RAN node 13 illustrate, the source RAN node in some scenes
12 and target RAN node 13 can be the same core net of connection, or the ginseng of core net can not be needed in some scenes
With.
Referring to Fig. 2, the embodiment of the present invention provides a kind of handoff procedure processing method, as shown in Fig. 2, including the following steps：
201, target RAN node receives the switching request that target RAN is sent, and the switching request includes the PDU sessions of UE
Context, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions
It can only ensure continuity in a certain range；
202, target RAN node judges whether that the PDU sessions can be kept；
203, target RAN node according to the judgement as a result, to the source RAN node return handoff response, it is described to cut
Handoff procedure can or cannot be executed by changing response and being used to indicate the PDU sessions.
In the embodiment of the present invention, above-mentioned source RAN node can be the node for the source RAN that above-mentioned UE is currently accessed, such as：UE
It is reported by measuring, notice source RAN node needs to execute handoff procedure, source RAN node selection target cell, and source RAN is saved
The PDU session contexts of point side are sent to target RAN node.Certainly, above-mentioned switching can also be that above-mentioned source RAN node is actively touched
Hair.In addition, the RAN node that above-mentioned target RAN node determines when can be above-mentioned source RAN node selection target cell.
Above-mentioned PDU sessions can only ensure continuity in a certain range it is to be understood that above-mentioned PDU sessions are only in this model
Interior guarantee continuity is enclosed, and then cannot be guaranteed continuity out of this range.Such as：Above-mentioned PDU sessions can only be in the PDU meetings
Ensure continuity in the coverage of the anchor point of words, i.e., when UE is switched to the RAN in a source, if new RAN and above-mentioned anchor
Point can keep connection, then still can ensure the connection of this PDU session after switching, if new RAN and above-mentioned anchor point are not
Can keep connection, then if new RAN and IP anchor points are unable to stay connected, when switching this PDU session can discharge connection,
Process is established re-initiate PDU sessions after UE is switched to new cell, new anchor point is selected for UE.Or it is above-mentioned
PDU sessions can only ensure continuity, i.e., above-mentioned certain model in one or more corresponding RAN of the PDU sessions or cell
Enclosing can refer to one or more corresponding RAN of PDU sessions or cell, wherein PDU sessions it is corresponding one or more
Either cell can be that core net node or RAN node are that the PDU sessions configure when establishing the session to RAN.Certainly, originally
In inventive embodiments, above-mentioned a certain range does not limit coverage or the PDU sessions corresponding one for the anchor point for being PDU sessions
Either cell can also be other regions or range to a either multiple RAN, is not construed as limiting to this embodiment of the present invention.
Such as：Above-mentioned PDU sessions can be the PDU sessions of continuity pattern (SSC mode) 2 or SSC mode 3,
In, the PDU sessions of SSC mode 2, which refer to the anchor point distributed for this PDU session, to be kept in certain coverage,
When UE removes the coverage of this IP anchor point, UE needs to select new anchor point.The PDU sessions of SSC mode 3 refer to it
Before selected an anchor point, establish the PDU sessions to a data network.Before the connection of UE to this anchor point stops, and establish
One new PDU session to identical data network, and be that this new PDU session has selected a new anchor point,
Then UE can move on to stream compression in the PDU sessions of new PDU, the PDU session connections of the PDU before then deleting.
It should be noted that in the embodiment of the present invention, above-mentioned anchor point can be IP anchors, may further be user plane IP anchors
Point.
Above-mentioned target RAN node judges whether to keep the PDU sessions can whether judge above-mentioned target RAN node
Belong in the corresponding a certain range of above-mentioned PDU sessions, or whether belongs to the coverage of the anchor point of above-mentioned PDU sessions, if so,
The PDU sessions can be then kept, if it is not, cannot then keep the PDU sessions.In addition, keep the PDU sessions it also will be understood that
To keep the connection of above-mentioned PDU sessions.
When judging that the PDU sessions can be kept, then indicates that above-mentioned PDU sessions are able to carry out by above-mentioned handoff response and cut
It changes, conversely, instruction cannot execute switching.
In addition, it is necessary to explanation, in the embodiment of the present invention, above-mentioned switching request can be include one of above-mentioned UE or
The PDU session contexts of the multiple PDU sessions of person, wherein each PDU sessions can have respective PDU session contexts, and can
To be that include one or more can only ensure the PDU session contexts of successional PDU sessions in a certain range.Such as：
Switching request in step 201 includes multiple PDU sessions that can only ensure successional PDU sessions in a certain range or more
Wen Shi, then, the part continuity instruction in these PDU session contexts in each PDU session contexts is used to indicate respectively
Corresponding PDU sessions can only ensure continuity in a certain range.Wherein, it can only ensure successional PDU in a certain range
The PDU session contexts of session will include part continuity instruction.It thus may be implemented to realize that switching is sentenced to multiple PDU sessions
It is disconnected, and can return to which PDU session can execute handoff procedure to source RAN node by above-mentioned handoff response, which PDU session
It cannot support handoff procedure.
In addition, indicating that the PDU sessions can or cannot execute handoff procedure it is to be understood that indicating above-mentioned PDU sessions
Switching prepares successfully or switching prepares failure.And above-mentioned handoff response can be PDU sessions described in display or implicit instruction
Handoff procedure can or cannot be executed.Such as：As target RAN node only can indicate that switching prepares successfully to source RAN node
PDU sessions, then the PDU sessions being not comprised in successful list are exactly then the PDU sessions that switching prepares failure.
Optionally, if the above-mentioned target RAN judgements cannot keep the PDU sessions, the handoff response to indicate institute
Handoff procedure cannot be executed by stating PDU sessions, so that the source RAN node deletes the PDU sessions；Or
If the target RAN judgements can keep the PDU sessions, the handoff response to indicate that the PDU sessions can be held
Row handoff procedure, the target RAN node are that the PDU sessions carry out acceptance judging, and reserved resource.
In the embodiment, if above-mentioned handoff response, which may be implemented, indicates that the PDU sessions cannot execute handoff procedure, source
RAN node deletes the PDU sessions.Wherein, source RAN node, which deletes the PDU sessions, to be, source RAN node deactivates should
PDU sessions.Such as：Above-mentioned PDU sessions are the PDU sessions of SSC mode 2 or SSC mode 3, and it is SSC mode 3 to work as
PDU sessions when, when deleting PDU sessions, source RAN node can be by data flow from original PDU Session Hand-offs to new PDU
In session connection.
In addition, if above-mentioned handoff response indicates that the PDU sessions can execute handoff procedure, the target RAN node is institute
It states PDU sessions and carries out acceptance judging, and reserved resource, that is, normal handoff procedure is executed, to realize above-mentioned PDU sessions from source
RAN node switches to above-mentioned target RAN node.
Optionally, above-mentioned PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, the target RAN
Node judges whether that the PDU sessions can be kept, including：
Whether the target RAN node judgement connect with the anchor point, if the target RAN node has with the anchor point
Connection, it is determined that the target RAN node judgement can keep the PDU sessions, if the target RAN node does not have with the anchor point
There is connection, it is determined that the target RAN node judgement cannot keep the PDU sessions.
Wherein, the anchor point information of above-mentioned anchor point can be the identification information of anchor point, such as：Can be IP address (IP
Address), or can also be an individually defined mark, naturally it is also possible to which the anchor of above-mentioned anchor point can be indicated by being other
Point information.In the embodiment, it may be implemented by judging whether connect with above-mentioned anchor point, to judge whether to keep above-mentioned
PDU sessions.In addition, above-mentioned, to have connection refer to user plane connection, to corresponding data network data can by RAN and anchor point it
Between channel transfer to data network.Certainly, it in the embodiment of the present invention, does not limit by judging whether there is company with above-mentioned anchor point
The mode connect judges whether that above-mentioned PDU sessions can be kept, such as：It can also include above-mentioned PDU sessions energy in above-mentioned PDU contexts
Ensure successional area information, such target RAN node it may determine that oneself whether the area information indicate region
In, if so, determination can keep above-mentioned PDU sessions, conversely, cannot then keep.
Optionally, whether above-mentioned target RAN node judgement connect with the anchor point, including：
Whether the target RAN node judges in preconfigured attachable anchor point information to include the anchor point, if institute
It includes the anchor point to state anchor point information, it is determined that the target RAN node is connect with the anchor point, if the anchor point information
In include the anchor point, it is determined that the target RAN node is not connect with the anchor point；Or
Whether the target RAN node is connect by DNS query with the anchor point.
Wherein, above-mentioned attachable anchor point information can be the information for the anchor point that above-mentioned target RAN node can connect, example
Such as：The identification information of attachable anchor point.In addition, above-mentioned anchor point information can be by operation management maintainance (OAM,
Operation Administration and Maintenance) it completes or is obtained by other configurations mode above-mentioned
Anchor point information is not construed as limiting this embodiment of the present invention.Whether above-mentioned target RAN node has by DNS query and the anchor point
Connection, can be target RAN node local maintenance DNS query server, and target RAN node obtains target by inquiring DNS
Connection relation between RAN node and above-mentioned anchor point, to determine whether to connect with above-mentioned anchor point.
In addition, in the embodiment of the present invention, handoff procedure can be cutting between above-mentioned source RAN node and target RAN node
Process (HO processes) is changed, source RAN node can state target RAN node and initiate to above-mentioned switching request directly up during being somebody's turn to do,
Target RAN node can also state source RAN node and return to above-mentioned handoff response directly up.Such as：As shown in figure 3, including as follows
Step：
Step 1, UE measurements report, and source RAN node executes switch decision.
Step 2, source RAN node initiate switching request to the point of contacts target RAN, wherein carrying UE contextual informations, including standard
For the identification information of the PDU session contexts of switching, such as user plane anchor point.For that can only support that a certain range is successional
PDU sessions carry a part continuity instruction.
Step 3, target RAN node judge whether the switching of energy support section continuity PDU sessions.
Step 4：If it is not, instruction switching prepares failure in the switching response message of return, this instruction can be with
It is display instruction, can also be implicit instruction.As target RAN node only indicates that switching prepares successful PDU meetings to source RAN node
Words, then the PDU sessions being not comprised in successful list are exactly then the PDU sessions that switching prepares failure.
In addition, in the embodiment of the present invention, handoff procedure can be the switching between core net node, source during being somebody's turn to do
RAN node can be initiated to above-mentioned target RAN node to above-mentioned switching request by core net, and target RAN node can also lead to
It crosses core net and returns to above-mentioned handoff response to above-mentioned source RAN node.Such as：As shown in figure 4, including the following steps：
Step 1, UE measurements report, and source RAN node executes switch decision.
Step 2, source RAN node initiate switching request to target RAN node, wherein carrying UE contextual informations, including standard
For the identification information of the PDU session contexts of switching, such as user plane anchor point.For that can only support that a certain range is successional
PDU sessions carry a part continuity instruction.
Step 3-4, the information by core net by UE in source RAN node side passes to target RAN node.
Step 5, target RAN node judge whether the switching of energy support section continuity PDU sessions.
Step 6, if it is not, in the switching response message of return instruction switching prepare failure, this instruction can be with
It is display instruction, can also be implicit instruction.As target RAN node only indicates that switching prepares successful PDU meetings to source RAN node
Words, then the PDU sessions being not comprised in successful list are exactly then the PDU sessions that switching prepares failure.
Step 7-8, it is interacted by core net, switching response message passes to source RAN node.
It should be noted that in the embodiment of the present invention, the embodiment of the plurality of optional of above-mentioned introduction can be combined with each other
It realizes, can be implemented separately, this is not construed as limiting.
The embodiment of the present invention, target RAN node receive the switching request that target RAN is sent, and the switching request includes one
The PDU session contexts of UE, the PDU session contexts include part continuity instruction, and the part continuity instruction is used for
Indicate that a PDU sessions can only ensure continuity in a certain range；The target RAN node judges whether that the PDU can be kept
The connection of session；The target RAN node according to the judgement as a result, to the source RAN node return handoff response, it is described
Handoff response, which is used to indicate the PDU sessions, can or cannot execute handoff procedure.Since target RAN node is to source RAN node
The handoff response of return indicates that above-mentioned PDU sessions can or cannot execute handoff procedure, so as to realize in handoff procedure
Processing to PDU sessions.
Referring to Fig. 5, the embodiment of the present invention also provides a kind of handoff procedure processing method, includes the following steps：
501, source RAN node initiates switching request to target RAN node, and the switching request includes in the PDU sessions of UE
Hereafter, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions only
It can ensure continuity in a certain range；
502, source RAN node receives the handoff response that the target RAN node returns, and the handoff response is used to indicate institute
Handoff procedure can or cannot be executed by stating PDU sessions.
Optionally, the method further includes：
If the handoff response indicates that the PDU sessions cannot execute handoff procedure, described in the source RAN node is deleted
PDU sessions.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, so that the mesh
Whether mark RAN node judgement connect with the anchor point, described to cut if the target RAN node is connect with the anchor point
It changes response and indicates that the PDU sessions can execute handoff procedure, it is described to cut if the target RAN is not connect with the anchor point
It changes response and indicates that the PDU sessions cannot execute handoff procedure.
It should be noted that embodiment party of the present embodiment as source corresponding with embodiment shown in Fig. 2 RAN node
Formula, specific embodiment may refer to the related description of embodiment shown in Fig. 2, with to avoid repeated explanation, this implementation
Example repeats no more.In the present embodiment, the processing to PDU sessions in handoff procedure equally may be implemented.
Referring to Fig. 6, the embodiment of the present invention provides a kind of RAN node, and the RAN node is target RAN node, such as Fig. 6 institutes
Show, RAN node 600 includes：
Receiving module 601, the switching request sent for receiving target RAN, the switching request includes the PDU sessions of UE
Context, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions
It can only ensure continuity in a certain range；
Judgment module 602 can keep the PDU sessions for judging whether；
Module 603 is returned, is used for according to the judgement as a result, returning to handoff response to the source RAN node, it is described to cut
Handoff procedure can or cannot be executed by changing response and being used to indicate the PDU sessions.
Optionally, if target RAN judgements cannot keep the PDU sessions, the handoff response to indicate the PDU
Session cannot execute handoff procedure, so that the source RAN node deletes the PDU sessions；Or
If the target RAN judgements can keep the PDU sessions, the handoff response to indicate that the PDU sessions can be held
Row handoff procedure, the target RAN node are that the PDU sessions carry out acceptance judging, and reserved resource.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, the judgement mould
Block 602 is for judging whether connect with the anchor point, if the target RAN node is connect with the anchor point, it is determined that institute
The PDU sessions can be kept by stating the judgement of target RAN node, if the target RAN node is not connect with the anchor point, it is determined that
The target RAN node judgement cannot keep the PDU sessions.
Optionally, whether judgment module 602 is for judging in preconfigured attachable anchor point information to include the anchor
Point, if the anchor point information includes the anchor point, it is determined that the target RAN node is connect with the anchor point, if described
Do not include the anchor point in anchor point information, it is determined that the target RAN node is not connect with the anchor point；Or
Whether the judgment module 602 by DNS query with the anchor point for being connect.
It should be noted that RAN node 600 can be arbitrary in embodiment of the method in the embodiment of the present invention in the present embodiment
The target RAN node of embodiment, the arbitrary embodiment of target RAN node all may be used in embodiment of the method in the embodiment of the present invention
To be realized by the above-mentioned RAN node 600 in the present embodiment, and reach identical advantageous effect, details are not described herein again.
Referring to Fig. 7, the embodiment of the present invention provides a kind of RAN node, and the RAN node is source RAN node, as shown in fig. 7,
RAN node 700 includes：
Sending module 701, for initiating switching request to target RAN node, the switching request includes the PDU sessions of UE
Context, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions
It can only ensure continuity in a certain range；
Receiving module 702, the handoff response returned for receiving the target RAN node, the handoff response is for referring to
Show that the PDU sessions can or cannot execute handoff procedure.
Optionally, as shown in figure 8, RAN node 700 further includes：
Removing module 703 deletes institute if indicating that the PDU sessions cannot execute handoff procedure for the handoff response
State PDU sessions.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, so that the mesh
Whether mark RAN node judgement connect with the anchor point, described to cut if the target RAN node is connect with the anchor point
It changes response and indicates that the PDU sessions can execute handoff procedure, it is described to cut if the target RAN is not connect with the anchor point
It changes response and indicates that the PDU sessions cannot execute handoff procedure.
It should be noted that RAN node 700 can be arbitrary in embodiment of the method in the embodiment of the present invention in the present embodiment
The source RAN node of embodiment, the arbitrary embodiment of source RAN node can be by embodiment of the method in the embodiment of the present invention
Above-mentioned RAN node 700 in the present embodiment is realized, and reaches identical advantageous effect, and details are not described herein again.
Referring to Fig. 9, the embodiment of the present invention provides the structure of another RAN node, which is target RAN node, should
RAN node includes：Processor 900, transceiver 910, memory 920, user interface 930 and bus interface, wherein：
Processor 900 executes following process for reading the program in memory 920：
The switching request that source RAN node is initiated is received by transceiver 910, the switching request includes the PDU sessions of UE
Context, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions
It can only ensure continuity in a certain range；
Judge whether that the PDU sessions can be kept；
According to the judgement as a result, returning to handoff response, the switching to the source RAN node by transceiver 910
Response, which is used to indicate the PDU sessions, can or cannot execute handoff procedure.
Wherein, transceiver 910, for sending and receiving data under the control of processor 900.
In fig.9, bus architecture may include the bus and bridge of any number of interconnection, specifically be represented by processor 900
One or more processors and the various circuits of memory that represent of memory 920 link together.Bus architecture can be with
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like are linked together, these are all these
Well known to field, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 910 can be
Multiple element includes transmitter and receiver, provides the unit for being communicated over a transmission medium with various other devices.Needle
To different user equipmenies, user interface 930, which can also be, external the interface for needing equipment is inscribed, and the equipment of connection includes
But be not limited to keypad, display, loud speaker, microphone, control stick etc..
Processor 900 is responsible for bus architecture and common processing, and memory 920 can store processor 900 and hold
Used data when row operation.
Optionally, if target RAN judgements cannot keep the PDU sessions, the handoff response to indicate the PDU
Session cannot execute handoff procedure, so that the source RAN node deletes the PDU sessions；Or
If the target RAN judgements can keep the PDU sessions, the handoff response to indicate that the PDU sessions can be held
Row handoff procedure, the target RAN node are that the PDU sessions carry out acceptance judging, and reserved resource.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, and the judgement is
No energy keeps the PDU sessions, including：
Whether judgement connect with the anchor point, if the target RAN node is connect with the anchor point, it is determined that described
The judgement of target RAN node can keep the PDU sessions, if the target RAN node is not connect with the anchor point, it is determined that institute
The PDU sessions cannot be kept by stating the judgement of target RAN node.
Optionally, whether the node judgement connect with the anchor point, including：
Judge in preconfigured attachable anchor point information whether to include the anchor point, if the anchor point information includes
The anchor point, it is determined that the target RAN node is connect with the anchor point, if in the anchor point information not including the anchor
Point, it is determined that the target RAN node is not connect with the anchor point；Or
Whether it is connect with the anchor point by DNS query.
It should be noted that RAN node can be arbitrary real in embodiment of the method in the embodiment of the present invention in the present embodiment
Apply the target RAN node of mode, the arbitrary embodiment of target RAN node can in embodiment of the method in the embodiment of the present invention
It is realized by the above-mentioned RAN node in the present embodiment, and reaches identical advantageous effect, details are not described herein again.
Referring to Figure 10, the embodiment of the present invention provides the structure of another RAN node, which is source RAN node, should
RAN node includes：Processor 1000, transceiver 1010, memory 1020, user interface 1030 and bus interface, wherein：
Processor 1000 executes following process for reading the program in memory 1020：
Switching request is initiated to target RAN node by transceiver 1010, the switching request includes in the PDU sessions of UE
Hereafter, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions only
It can ensure continuity in a certain range；
The handoff response that the target RAN node returns is received by transceiver 1010, the handoff response is used to indicate
The PDU sessions can or cannot execute handoff procedure.
Wherein, transceiver 1010, for sending and receiving data under the control of processor 1000.
In Fig. 10, bus architecture may include the bus and bridge of any number of interconnection, specifically by 1000 generation of processor
The various circuits for the memory that the one or more processors and memory 1020 of table represent link together.Bus architecture may be used also
To link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, these are all
It is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 1010 can
To be multiple element, that is, includes transmitter and receiver, the list for being communicated over a transmission medium with various other devices is provided
Member.For different user equipmenies, user interface 1030, which can also be, external the interface for needing equipment is inscribed, and connection is set
Standby including but not limited to keypad, display, loud speaker, microphone, control stick etc..
Processor 1000 is responsible for bus architecture and common processing, and memory 1020 can store processor 1000 and exist
Execute used data when operation.
Optionally, processor 1000 is additionally operable to：
If the handoff response indicates that the PDU sessions cannot execute handoff procedure, the PDU sessions are deleted.
Optionally, the PDU session contexts further include the anchor point information of the anchor point of the PDU sessions, so that the mesh
Whether mark RAN node judgement connect with the anchor point, described to cut if the target RAN node is connect with the anchor point
It changes response and indicates that the PDU sessions can execute handoff procedure, it is described to cut if the target RAN is not connect with the anchor point
It changes response and indicates that the PDU sessions cannot execute handoff procedure.
It should be noted that RAN node can be arbitrary real in embodiment of the method in the embodiment of the present invention in the present embodiment
Apply the source RAN node of mode, the arbitrary embodiment of source RAN node can be by this in embodiment of the method in the embodiment of the present invention
Above-mentioned RAN node in embodiment is realized, and reaches identical advantageous effect, and details are not described herein again.
In several embodiments provided herein, it should be understood that disclosed method and apparatus, it can be by other
Mode realize.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
For a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine
Or it is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed phase
Coupling, direct-coupling or communication connection between mutually can be by some interfaces, the INDIRECT COUPLING or communication of device or unit
Connection can be electrical, machinery or other forms.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that the independent physics of each unit includes, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can be stored in one and computer-readable deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes receiving/transmission method described in each embodiment of the present invention
Part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation
ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various to store
The medium of program code.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (14)
1. a kind of handoff procedure processing method, which is characterized in that including：
Target radio access network RAN node receives the switching request that source RAN node is initiated, and the switching request includes user terminal
Protocol Data Unit PDU session contexts, the PDU session contexts include the instruction of part continuity, and the part is continuous
Property instruction be used to indicate PDU sessions and can only ensure continuity in a certain range；
The target RAN node judges whether that the PDU sessions can be kept；
According to the judgement as a result, returning to handoff response to the source RAN node, the switching is rung the target RAN node
Handoff procedure can or cannot be executed applied to the instruction PDU sessions.
2. the method as described in claim 1, which is characterized in that if target RAN judgements cannot keep the PDU sessions,
Then the handoff response indicates that the PDU sessions cannot execute handoff procedure, so that the source RAN node deletes the PDU meetings
Words；Or
If the target RAN judgements can keep the PDU sessions, the handoff response to indicate that the PDU sessions can execute and cut
Process is changed, the target RAN node is that the PDU sessions carry out acceptance judging, and reserved resource.
3. method as claimed in claim 1 or 2, which is characterized in that the PDU session contexts further include the PDU sessions
Anchor point anchor point information, the target RAN node judges whether that the PDU sessions can be kept, including：
Whether the target RAN node judgement connect with the anchor point, if the target RAN node has company with the anchor point
It connects, it is determined that the target RAN node judgement can keep the PDU sessions, if the target RAN node does not have with the anchor point
Connection, it is determined that the target RAN node judgement cannot keep the PDU sessions.
4. method as claimed in claim 3, which is characterized in that the target RAN node judges whether there is company with the anchor point
It connects, including：
Whether the target RAN node judges in preconfigured attachable anchor point information to include the anchor point, if the anchor
Point information includes the anchor point, it is determined that the target RAN node is connect with the anchor point, if in the anchor point information not
Including the anchor point, it is determined that the target RAN node is not connect with the anchor point；Or
Whether the target RAN node is inquired by domain name system DNS and is connect with the anchor point.
5. a kind of handoff procedure processing method, which is characterized in that including：
Source RAN node initiates switching request to target RAN node, and the switching request includes the PDU sessions of user terminal or more
Text, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions can only
Ensure continuity in a certain range；
The source RAN node receives the handoff response that the target RAN node returns, and the handoff response is used to indicate described
PDU sessions can or cannot execute handoff procedure.
6. method as claimed in claim 5, which is characterized in that the method further includes：
If the handoff response indicates that the PDU sessions cannot execute handoff procedure, the source RAN node deletes the PDU meetings
Words.
7. such as method described in claim 5 or 6, which is characterized in that the PDU session contexts further include the PDU sessions
Anchor point anchor point information so that the target RAN node judgement whether connect with the anchor point, if the target RAN section
Point is connect with the anchor point, then the handoff response indicates that the PDU sessions can execute handoff procedure, if the target RAN
It is not connect with the anchor point, then the handoff response indicates that the PDU sessions cannot execute handoff procedure.
8. a kind of RAN node, the RAN node is target RAN node, which is characterized in that including：
Receiving module, the switching request initiated for receiving source RAN node, the switching request includes the PDU meetings of user terminal
Context is talked about, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU meetings
Words can only ensure continuity in a certain range；
Judgment module can keep the PDU sessions for judging whether；
Module is returned, is used for according to the judgement as a result, returning to handoff response, the handoff response to the source RAN node
Handoff procedure can or cannot be executed by being used to indicate the PDU sessions.
9. RAN node as claimed in claim 8, which is characterized in that if target RAN judgements cannot keep the PDU meetings
Words, then the handoff response indicates that the PDU sessions cannot execute handoff procedure, so that the source RAN node deletes the PDU
Session；Or
If the target RAN judgements can keep the PDU sessions, the handoff response to indicate that the PDU sessions can execute and cut
Process is changed, the target RAN node is that the PDU sessions carry out acceptance judging, and reserved resource.
10. RAN node as claimed in claim 8 or 9, which is characterized in that the PDU session contexts further include the PDU
The anchor point information of the anchor point of session, the judgment module is for judging whether connect with the anchor point, if the target RAN is saved
Point is connect with the anchor point, it is determined that the target RAN node judgement can keep the PDU sessions, if the target RAN is saved
Point is not connect with the anchor point, it is determined that the target RAN node judgement cannot keep the PDU sessions.
11. RAN node as claimed in claim 10, which is characterized in that the judgment module for judge it is preconfigured can
Whether include the anchor point in the anchor point information of connection, if the anchor point information includes the anchor point, it is determined that the target
RAN node is connect with the anchor point, if in the anchor point information not including the anchor point, it is determined that the target RAN node
It is not connect with the anchor point；Or
Whether the judgment module by DNS query with the anchor point for being connect.
12. a kind of RAN node, the RAN node is source RAN node, which is characterized in that including：
Sending module, for initiating switching request to target RAN node, the switching request includes the PDU sessions of user terminal
Context, the PDU session contexts include part continuity instruction, and the part continuity instruction is used to indicate PDU sessions
It can only ensure continuity in a certain range；
Receiving module, the handoff response returned for receiving the target RAN node, the handoff response is used to indicate described
PDU sessions can or cannot execute handoff procedure.
13. RAN node as claimed in claim 12, which is characterized in that the RAN node further includes：
Removing module deletes the PDU meetings if indicating that the PDU sessions cannot execute handoff procedure for the handoff response
Words.
14. RAN node as described in claim 12 or 13, which is characterized in that the PDU session contexts further include described
The anchor point information of the anchor point of PDU sessions, so that whether target RAN node judgement connect with the anchor point, if the mesh
Mark RAN node is connect with the anchor point, then the handoff response indicates that the PDU sessions can execute handoff procedure, if described
Target RAN is not connect with the anchor point, then the handoff response indicates that the PDU sessions cannot execute handoff procedure.
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