CN107846703A - A kind of data transmission method and device - Google Patents

A kind of data transmission method and device Download PDF

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Publication number
CN107846703A
CN107846703A CN201610836648.1A CN201610836648A CN107846703A CN 107846703 A CN107846703 A CN 107846703A CN 201610836648 A CN201610836648 A CN 201610836648A CN 107846703 A CN107846703 A CN 107846703A
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user plane
anchor point
tunnel
new command
ran
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CN107846703B (en
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张娟
王胡成
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/021—Traffic management, e.g. flow control or congestion control in wireless networks with changing topologies, e.g. ad-hoc networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/248—Connectivity information update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/34—Modification of an existing route

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention provides a kind of data transmission method and device, is related to communication technical field, to improve the reliability of the transmission of data and business.The data transmission method of the present invention includes：When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, indicate that IP anchor points corresponding to the PDU sessions cache downlink data packet；Indicate that the user plane anchor point and the IP anchor points carry out user plane path renewal；Indicate that RAN carries out user plane path renewal；Indicate that the IP anchor points send downlink data packet by the user plane path after renewal.Present invention is mainly used in data transmission technology.

Description

A kind of data transmission method and device
Technical field
The present invention relates to communication technical field, more particularly to a kind of data transmission method and device.
Background technology
In LTE (Long Term Evolution, Long Term Evolution) system, the user face nodes in network include PGW (Packet Data Network Gateway, packet data gateway), SGW (Serving Gateway, gateway) and eNB (Evolved Node B, evolved base station).These nodes have the function of chain of command and user plane simultaneously.PGW is IP anchor points, UE (User Equipment, user equipment) distribution IP address is responsible for, and routes data to external network.SGW is mobile Property anchor point, in UE moving process, SGW can change according to the change of UE positions.
In 5G systems, an important technological trend is exactly chain of command and user plane separation.Chain of command is responsible for session Establish, modification and deletion, the foundation in tunnel, address distribution, the function such as selection of user plane gateway；The function master of user plane webmaster It is responsible for route and the forwarding of packet.
As a rule, if UE is in home network, do not roam, in order to reduce data transmission delay, chain of command UE PDU (Protocol Data Unit, protocol Data Unit) session select a user plane anchor point.
In 5G systems, for foundation UE to heterogeneous networks PDU sessions, it is not necessary to needed as LTE system The user face nodes of one polymerization, i.e. SGW.The core network user face anchor point selected to the PDU sessions of different networks can phase It is relatively independent between mutually, without any paradigmatic relation.But for establishing the different PDU sessions to identical network, then need to gather Close to an identical user plane anchor point, for AMBR (Aggregated Maximum Bit Rate, amounting to Maximum Bit Rate) Control and the function such as charging.
Therefore for a PDU session, it is understood that there may be a kind of scene be, as shown in figure 1, UE establishes first to a certain During the PDU sessions of data network, core network control surface is that UE have selected a user plane anchor point UPGW (User Plane Gateway, user plane gateway) 1.When the PDU session establishments of UE initiation Article 2 to this data network, core net needs to exist RAN (radio access network, Radio Access Network) inserts the user plane anchor point of a polymerization between UPGW1 UPGW2.Now, two user planes to the PDU sessions of identical data network are required for by polymerizeing anchor point UPGW2 transmission.
When performing above-mentioned user plane path conversion, if there is the transmission of up-downgoing packet in network, then will likely The situation that packet loss or receiving terminal node report an error occurs, so as to have impact on the reliability of the transmission of data and business.
The content of the invention
In view of this, the present invention provides a kind of data transmission method and device, to improve the transmission of data and business Reliability.
In order to solve the above technical problems, the present invention provides a kind of data transmission method, including：
When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, the PDU is indicated IP anchor points corresponding to session cache downlink data packet；
Indicate that the user plane anchor point and the IP anchor points carry out user plane path renewal；
Indicate that Radio Access Network RAN carries out user plane path renewal；
Indicate that the IP anchor points send downlink data packet by the user plane path after renewal.
Wherein, when needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, the side Method also includes：
Indicate the RAN cachings upstream data bag；
The instruction Radio Access Network RAN caching upstream data bags, including：
Message on hold is sent to the RAN, the message on hold is used to indicate the RAN cachings upstream data bag；
IP anchor points caching downlink data packet corresponding to the instruction PDU sessions, including：
Message on hold is sent to the IP anchor points, the message on hold is used to indicate the IP anchor points caching downlink data Bag.
Wherein, when needing to increase user plane anchor point for the PDU sessions that have activated, the instruction user plane anchor point and The IP anchor points carry out user plane path renewal, including：
The first user plane more new command is sent to the user plane anchor point, is wrapped in the first user plane more new command Include：The Tunnel Identifier and IP address of the user plane anchor point, the Tunnel Identifier and IP address of the RAN, the tunnel of the IP anchor points Road identifies and IP address；
Second user face more new command is sent to the IP anchor points, is included in the second user face more new command：Institute State the Tunnel Identifier and IP address of user plane anchor point；
The first user plane more new command is used for, the tunnel established between the RAN and the user plane anchor point and The tunnel established between the user plane anchor point and the IP anchor points；
The second user face more new command is used for, and the tunnel between the IP anchor points and the RAN is updated to described Tunnel between IP anchor points and the user plane anchor point.
Wherein, when needing to increase user plane anchor point for the PDU sessions activated, the instruction Radio Access Network RAN User plane path renewal is carried out, including：
The 3rd user plane more new command is sent to the RAN, is included in the 3rd user plane more new command：The use The Tunnel Identifier and IP address of family face anchor point；
The 3rd user plane more new command is used for, and the tunnel between the IP anchor points and the RAN is updated to described Tunnel between RAN and the user plane anchor point.
Wherein, when needing to delete user plane anchor point for the PDU sessions that have activated, the instruction user plane anchor point and The IP anchor points carry out user plane path renewal, including：
Fourth user face more new command is sent to the user plane anchor point；
The 5th user plane more new command is sent to the IP anchor points, is included in the 5th user plane more new command：Institute State RAN Tunnel Identifier and IP address；
The fourth user face more new command is used for, and it is related to the PDU sessions to indicate that the user plane anchor point is deleted Information；
The 5th user plane more new command is used for, and the tunnel between the IP anchor points and the user plane anchor point is updated For the tunnel between the IP anchor points and the RAN.
Wherein, it is described to indicate Radio Access Network to institute when needing to delete user plane anchor point for the PDU sessions activated State RAN and send the 6th user plane more new command, include in the 6th user plane more new command：The tunnel mark of the IP anchor points Knowledge and IP address；
6th user plane more new command is used to the tunnel between the RAN and the user plane anchor point being updated to institute State the tunnel between RAN and the IP anchor points.
Wherein, the instruction IP anchor points send downlink data packet by the user plane path after renewal, including：
Receive the user plane renewal response message that the RAN is sent；
Response message is updated according to the user plane, solution message on hold is sent to the IP anchor points；
When needing to increase user plane anchor point for the PDU sessions activated, the solution message on hold is used to trigger the IP Anchor point sends downlink data packet by the tunnel between the RAN and the user plane anchor point；
When needing to delete user plane anchor point for the PDU sessions activated, the solution message on hold is used to trigger the IP Anchor point sends downlink data packet by the tunnel between the RAN and the IP anchor points.
Second aspect, the present invention provide a kind of data transmission method, including：
When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, according to core net The instruction caching upstream data bag of chain of command functional entity；
User plane path renewal is carried out according to the instruction of the core network control surface functional entity；
Upstream data bag is sent by the user plane path after renewal.
Wherein, it is described that upstream data bag is cached according to the instruction of core network control surface functional entity, including：
Receive the message on hold of the core network control surface functional entity；
The upstream data bag received according to message on hold caching.
Wherein, it is described according to the core network control surface when needing to increase user plane anchor point for the PDU sessions activated The instruction of functional entity carries out user plane path renewal, including：
The 3rd user plane more new command of the core network control surface functional entity is received, is updated in the 3rd user plane Instruction includes：The Tunnel Identifier and IP address of the user plane anchor point；
According to the 3rd user plane more new command, the tunnel between the IP anchor points is updated to and the user plane Tunnel between anchor point.
Wherein, it is described according to the core network control surface when needing to delete user plane anchor point for the PDU sessions activated The instruction of functional entity carries out user plane path renewal, including：
The 6th user plane more new command of the core network control surface functional entity is received, is updated in the 6th user plane Instruction includes：The Tunnel Identifier and IP address of IP anchor points corresponding to the PDU sessions；
According to the 6th user plane more new command, the tunnel between the user plane anchor point is updated to and the IP Tunnel between anchor point.
Wherein, when needing to increase user plane anchor point for the PDU sessions activated, the user plane road by after renewal Footpath sends upstream data bag, including：Upstream data bag is sent by the tunnel between the user plane anchor point；
When needing to delete user plane anchor point for the PDU sessions activated, the user plane path by after renewal is sent out Upstream data bag is sent, including：Upstream data bag is sent by the tunnel between IP anchor points.
Wherein, after the progress user plane path renewal according to the instruction of the core network control surface functional entity, Methods described also includes：
User plane renewal response message is sent to the core network control surface functional entity, the user plane renewal response disappears Cease and send solution message on hold for triggering IP anchor points corresponding to the core network control surface functional entity to the PDU sessions.
The third aspect, the present invention provide a kind of data transmission method, including：
When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, according to core net The instruction caching downlink data packet of chain of command functional entity；
User plane path renewal is carried out according to the instruction of the core network control surface functional entity；
Downlink data packet is sent by the user plane path after renewal.
Wherein, it is described that downlink data packet is cached according to the instruction of core network control surface functional entity, including：
Receive the message on hold of the core network control surface functional entity；
The downlink data packet received according to message on hold caching.
Wherein, it is described according to the core network control surface when needing to increase user plane anchor point for the PDU sessions activated The instruction of functional entity carries out user plane path renewal, including：
The second user face more new command of the core network control surface functional entity is received, is updated in the second user face Instruction includes：The Tunnel Identifier and IP address of the user plane anchor point；
According to the second user face more new command, by the tunnel between RAN be updated to the user plane anchor point it Between tunnel.
Wherein, it is described according to the core network control surface when needing to delete user plane anchor point for the PDU sessions activated The instruction of functional entity carries out user plane path renewal, including：
The 5th user plane more new command of the core network control surface functional entity is received, is updated in the 5th user plane Instruction includes：RAN Tunnel Identifier and IP address；
According to the 5th user plane more new command, by the tunnel between the user plane anchor point be updated to it is described Tunnel between RAN.
Wherein, the user plane path by after renewal sends downlink data packet, including：
Receive the solution message on hold of the core network control surface functional entity；
When needing to increase user plane anchor point for the PDU sessions activated, RAN and institute are passed through according to the solution message on hold The tunnel stated between user plane anchor point sends downlink data packet；
When needing to delete user plane anchor point for the PDU sessions that have activated, according to the solution message on hold by with it is described Tunnel between RAN sends downlink data packet.
Fourth aspect, the invention provides a kind of data transmission method, including：
When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, according to core net The instruction of chain of command functional entity carries out user plane path renewal.
Wherein, it is described according to core network control surface function when needing to increase user plane anchor point for the PDU sessions activated The instruction of entity carries out user plane path renewal, including：
The first user plane more new command of the core network control surface functional entity is received, is updated in first user plane Instruction includes：The Tunnel Identifier and IP address of the user plane anchor point, RAN Tunnel Identifier and IP address, the tunnel of IP anchor points Road identifies and IP address；
According to the first user plane more new command, establish and the tunnel between the RAN and foundation and the IP anchors Tunnel between point.
Wherein, it is described according to core network control surface function when needing to delete user plane anchor point for the PDU sessions activated The instruction of entity carries out user plane path renewal, including：
Receive the fourth user face more new command of the core network control surface functional entity；
The information related to the PDU sessions is deleted according to the fourth user face more new command.
Wherein, when needing to increase user plane anchor point for the PDU sessions activated, methods described also includes：
Pass through the tunnel transmission up-downgoing packet between RAN.
5th aspect, the invention provides a kind of data transmission device, including：
First indicating module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane for working as During anchor point, indicate that IP anchor points corresponding to the PDU sessions cache downlink data packet；
First path update instruction module, for indicating that the user plane anchor point and the IP anchor points carry out user plane path Renewal；
Second routing update indicating module, for indicating that Radio Access Network RAN carries out user plane path renewal；
Second indicating module, for indicating that the IP anchor points send downlink data packet by the user plane path after renewal.
Wherein, first indicating module is additionally operable to, when need for activated protocol Data Unit PDU sessions increase or When deleting user plane anchor point, the RAN cachings upstream data bag is indicated；
First indicating module includes：
First message on hold sending submodule, for sending message on hold to the RAN, the message on hold is used to indicate The RAN caches upstream data bag；
Second message on hold sending submodule, for sending message on hold to the IP anchor points, the message on hold is used for Indicate the IP anchor points caching downlink data packet.
Wherein, the first path update instruction module includes：
First user plane more new command sending submodule, need to increase user plane anchor for the PDU sessions activated for working as During point, the first user plane more new command is sent to the user plane anchor point, is included in the first user plane more new command：Institute State the Tunnel Identifier and IP address of user plane anchor point, the Tunnel Identifier and IP address of the RAN, the Tunnel Identifier of the IP anchor points And IP address；
Second user face more new command sending submodule, need to increase user plane anchor for the PDU sessions activated for working as During point, second user face more new command is sent to the IP anchor points, is included in the second user face more new command：The use The Tunnel Identifier and IP address of family face anchor point；
The first user plane more new command is used for, the tunnel established between the RAN and the user plane anchor point and The tunnel established between the user plane anchor point and the IP anchor points；
The second user face more new command is used for, and the tunnel between the IP anchor points and the RAN is updated to described Tunnel between IP anchor points and the user plane anchor point.
Wherein, the second routing update indicating module is specifically used for：When needs increase user for the PDU sessions activated During the anchor point of face, the 3rd user plane more new command is sent to the RAN, is included in the 3rd user plane more new command：It is described The Tunnel Identifier and IP address of user plane anchor point；
The 3rd user plane more new command is used for, and the tunnel between the IP anchor points and the RAN is updated to described Tunnel between RAN and the user plane anchor point.
Wherein, the first path update instruction module includes：
Fourth user face more new command sending submodule, need to delete user plane anchor for the PDU sessions activated for working as During point, fourth user face more new command is sent to the user plane anchor point；
5th user plane more new command sending submodule, need to delete user plane anchor for the PDU sessions activated for working as During point, the 5th user plane more new command is sent to the IP anchor points, is included in the 5th user plane more new command：It is described RAN Tunnel Identifier and IP address；
The fourth user face more new command is used for, and it is related to the PDU sessions to indicate that the user plane anchor point is deleted Information；
The 5th user plane more new command is used for, and the tunnel between the IP anchor points and the user plane anchor point is updated For the tunnel between the IP anchor points and the RAN.
Wherein, the second routing update indicating module is specifically used for：When needs delete user for the PDU sessions activated During the anchor point of face, the 6th user plane more new command is sent to the RAN, is included in the 6th user plane more new command：It is described The Tunnel Identifier and IP address of IP anchor points；
6th user plane more new command is used to the tunnel between the RAN and the user plane anchor point being updated to institute State the tunnel between RAN and the IP anchor points.
Wherein, second indicating module includes：
Receiving submodule, update response message for receiving the user plane that the RAN is sent；
Sending submodule, for updating response message according to the user plane, solution message on hold is sent to the IP anchor points；
When needing to increase user plane anchor point for the PDU sessions activated, the solution message on hold is used to trigger the IP Anchor point sends downlink data packet by the tunnel between the RAN and the user plane anchor point；
When needing to delete user plane anchor point for the PDU sessions activated, the solution message on hold is used to trigger the IP Anchor point sends downlink data packet by the tunnel between the RAN and the IP anchor points.
6th aspect, the present invention provide a kind of data transmission device, including：
Cache module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane anchor point for working as When, upstream data bag is cached according to the instruction of core network control surface functional entity；
Routing update module, for carrying out user plane path more according to the instruction of the core network control surface functional entity Newly；
Packet sending module, for sending upstream data bag by the user plane path after renewal.
Wherein, the cache module includes：
Receiving submodule, for receiving the message on hold of the core network control surface functional entity；
Cache sub-module, for the upstream data bag received according to message on hold caching.
Wherein, the routing update module includes：
First command reception submodule, for when needing to increase user plane anchor point for the PDU sessions activated, receiving institute The 3rd user plane more new command of core network control surface functional entity is stated, is included in the 3rd user plane more new command：Institute State the Tunnel Identifier and IP address of user plane anchor point；
First path updates submodule, will be between the IP anchor points for according to the 3rd user plane more new command Tunnel be updated to tunnel between the user plane anchor point.
Wherein, the routing update module includes：
Second command reception submodule, for when needing to delete user plane anchor point for the PDU sessions activated, receiving institute The 6th user plane more new command of core network control surface functional entity is stated, is included in the 6th user plane more new command：Institute State the Tunnel Identifier and IP address of IP anchor points corresponding to PDU sessions；
Second routing update submodule, will be with the user plane anchor point for according to the 6th user plane more new command Between tunnel be updated to tunnel between the IP anchor points.
Wherein, the packet sending module is specifically used for：When needs increase user plane anchor point for the PDU sessions activated When, upstream data bag is sent by the tunnel between the user plane anchor point；Used when needing to delete for the PDU sessions activated During the anchor point of family face, upstream data bag is sent by the tunnel between IP anchor points.
Wherein, described device also includes：
Message transmission module, for sending user plane renewal response message, institute to the core network control surface functional entity User plane renewal response message is stated to be used to trigger IP anchor points corresponding to the core network control surface functional entity to the PDU sessions Send solution message on hold.
7th aspect, the present invention provide a kind of data transmission device, including：
Cache module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane anchor point for working as When, downlink data packet is cached according to the instruction of core network control surface functional entity；
Routing update module, for carrying out user plane path more according to the instruction of the core network control surface functional entity Newly；
Packet sending module, for sending downlink data packet by the user plane path after renewal.
Wherein, the cache module includes：
Receiving submodule, for receiving the message on hold of the core network control surface functional entity；
Cache sub-module, for the downlink data packet received according to message on hold caching.
Wherein, the routing update module includes：
First command reception submodule, for when needing to increase user plane anchor point for the PDU sessions activated, receiving institute The second user face more new command of core network control surface functional entity is stated, is included in the second user face more new command：Institute State the Tunnel Identifier and IP address of user plane anchor point；
First path updates submodule, for according to the second user face more new command, by the tunnel between RAN more The new tunnel between the user plane anchor point.
Wherein, the routing update module includes：
Second command reception submodule, for when needing to delete user plane anchor point for the PDU sessions activated, receiving institute The 5th user plane more new command of core network control surface functional entity is stated, is included in the 5th user plane more new command：RAN Tunnel Identifier and IP address；
Second routing update submodule, will be with the user plane anchor point for according to the 5th user plane more new command Between tunnel be updated to tunnel between the RAN.
Wherein, the packet sending module includes：
Receiving submodule, for receiving the solution message on hold of the core network control surface functional entity；
Packet sending submodule, for when needing to increase user plane anchor point for the PDU sessions that have activated, according to described Solve message on hold and downlink data packet is sent by the tunnel between RAN and the user plane anchor point；When needing for the PDU that has activated When user plane anchor point is deleted in session, downlink data packet is sent by the tunnel between the RAN according to the solution message on hold.
Eighth aspect, the present invention provide a kind of data transmission device, including：
Routing update module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane for working as During anchor point, user plane path renewal is carried out according to the instruction of core network control surface functional entity.
Wherein, the routing update module includes：
First command reception submodule, for when needing to increase user plane anchor point for the PDU sessions activated, receiving institute The first user plane more new command of core network control surface functional entity is stated, is included in the first user plane more new command：Institute State the Tunnel Identifier and IP address of user plane anchor point, RAN Tunnel Identifier and IP address, the Tunnel Identifier and IP of IP anchor points Location；
First path updates submodule, for according to the first user plane more new command, establishing between the RAN Tunnel between tunnel and foundation and the IP anchor points.
Wherein, the routing update module includes：
Second command reception submodule, for when needing to delete user plane anchor point for the PDU sessions activated, receiving institute State the fourth user face more new command of core network control surface functional entity；
Second routing update submodule, for being deleted and the PDU sessions phase according to the fourth user face more new command The information of pass.
Wherein, described device also includes：
Packet sending module, for when needing to increase user plane anchor point for the PDU sessions that have activated, by with RAN Between tunnel transmission up-downgoing packet.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
In embodiments of the present invention, when needs are the protocol Data Unit PDU sessions increase activated or deletion user plane During anchor point, the upstream data bag received and downlink data packet are cached respectively by RAN and IP anchor points, user plane path to be done is more The user plane path after renewal is recycled to send downlink data packet after new.So avoided using the scheme of the embodiment of the present invention The situation that packet loss or receiving terminal node of the prior art report an error, improves the transmission of data and the reliability of business.
Brief description of the drawings
Fig. 1 is user plane path schematic diagram of the prior art；
Fig. 2 is the flow chart of the data transmission method of the embodiment of the present invention one；
Fig. 3 is the flow chart of the data transmission method of the embodiment of the present invention two；
Fig. 4 is the flow chart of the data transmission method of the embodiment of the present invention three；
Fig. 5 is the flow chart of the data transmission method of the embodiment of the present invention four；
Fig. 6 is the process schematic that PDU sessions are established in the embodiment of the present invention；
Fig. 7 is the flow chart of the data transmission method of the embodiment of the present invention five；
Fig. 8 is the flow chart of the data transmission method of the embodiment of the present invention six；
Fig. 9 is the schematic diagram of the data transmission device of the embodiment of the present invention seven；
Figure 10 is the schematic diagram of the data transmission device of the embodiment of the present invention eight；
Figure 11 is the another schematic diagram of the data transmission device of the embodiment of the present invention eight；
Figure 12 is the schematic diagram of the data transmission device of the embodiment of the present invention nine；
Figure 13 is the schematic diagram of the data transmission device of the embodiment of the present invention ten；
Figure 14 is the another schematic diagram of the data transmission device of the embodiment of the present invention ten.
Embodiment
Below in conjunction with drawings and examples, the embodiment of the present invention is described in further detail.Following reality Apply example to be used to illustrate the present invention, but be not limited to the scope of the present invention.
As shown in Fig. 2 the data transmission method of the embodiment of the present invention one, applied to core network control surface functional entity, bag Include：
Step 101, when need for activated protocol Data Unit PDU sessions increase or delete user plane anchor point when, refer to Show that IP anchor points corresponding to the PDU sessions cache downlink data packet.
In actual applications, when UE is initiated to during PDU sessions with existing PDU sessions identical data network, it is necessary to PDU sessions newly to initiate increase user plane anchor point.And when user initiates to delete two PDU sessions for arriving identical data network When, then need to delete user face nodes.
When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, core net control Face functional entity sends message on hold to the IP anchor points.Wherein, the message on hold is used to indicate under the IP anchor points caching Row packet.After receiving corresponding message on hold, IP anchor points cache the downlink data packet received.
In addition, in this step, in order to be further ensured that the reliability of the transmission of data and business, when needs are to have activated Protocol Data Unit PDU sessions increase or when deleting user plane anchor point, may further indicate that RAN caching upstream data bag.Tool Body, when needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, core network control surface work( Energy entity sends message on hold to the RAN, and the message on hold is used to indicate the RAN cachings upstream data bag.Receive phase After the message on hold answered, RAN caches the downlink data packet received.
Step 102, indicate that the user plane anchor point and the IP anchor points carry out user plane path renewal.
When needing to increase user plane anchor point for the PDU sessions that have activated, core network control surface functional entity is to the use Family face anchor point sends the first user plane more new command, includes in the first user plane more new command：The user plane anchor point Tunnel Identifier and IP address, the Tunnel Identifier and IP address of the RAN, the Tunnel Identifier and IP address of the IP anchor points；To The IP anchor points send second user face more new command, include in the second user face more new command：The user plane anchor The Tunnel Identifier and IP address of point.
Wherein, the first user plane more new command is used for, the tunnel established between the RAN and the user plane anchor point And the tunnel established between the user plane anchor point and the IP anchor points；The second user face more new command is used for, by institute State the tunnel that the tunnel between IP anchor points and the RAN is updated between the IP anchor points and the user plane anchor point.
When needing to delete user plane anchor point for the PDU sessions that have activated, core network control surface functional entity is to the use Family face anchor point sends fourth user face more new command；The 5th user plane more new command is sent to the IP anchor points, the described 5th User plane more new command includes：The Tunnel Identifier and IP address of the RAN.
Wherein, the fourth user face more new command is used for, and indicates that the user plane anchor point is deleted and the PDU sessions phase The information of pass；The 5th user plane more new command is used for, by the tunnel between the IP anchor points and the user plane anchor point more The newly tunnel between the IP anchor points and the RAN.
Step 103, instruction RAN carry out user plane path renewal.
When needing to increase user plane anchor point for the PDU sessions that have activated, core network control surface functional entity is to the RAN The 3rd user plane more new command is sent, is included in the 3rd user plane more new command：The tunnel mark of the user plane anchor point Knowledge and IP address.Wherein, the 3rd user plane more new command is used for, by the tunnel between the IP anchor points and the RAN more The newly tunnel between the RAN and the user plane anchor point.
When needing to delete user plane anchor point for the PDU sessions that have activated, core network control surface functional entity is to the RAN The 6th user plane more new command is sent, is included in the 6th user plane more new command：The Tunnel Identifier of the IP anchor points and IP address.Wherein, the 6th user plane more new command is used to update in the tunnel between the RAN and the user plane anchor point For the tunnel between the RAN and the IP anchor points.
Step 104, the instruction IP anchor points send downlink data packet by the user plane path after renewal.
After RAN has updated user plane path, directly recover the transmission of upstream data bag, and to core network control surface entity Send user plane renewal response message.Now, core network control surface functional entity updates response message according to the user plane, to The IP anchor points send solution message on hold, and instruction IP anchor points recover the transmission of downlink data packet.
In the above-described embodiments, the execution of step 102 and step 103 and do not have strict precedence relationship, namely at it In his embodiment, step 103 can be first carried out and perform step 102 again.
As seen from the above, in embodiments of the present invention, when needs increase for the protocol Data Unit PDU sessions activated Or when deleting user plane anchor point, cache the upstream data bag received and downlink data packet respectively by RAN and IP anchor points, it is to be done The user plane path after renewal is recycled to send downlink data packet after user plane path renewal.So utilize the embodiment of the present invention Scheme avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve transmission and the business of data Reliability.
As shown in figure 3, the data transmission method of the embodiment of the present invention two, applied to RAN, including：
Step 201, when need for activated protocol Data Unit PDU sessions increase or delete user plane anchor point when, root Upstream data bag is cached according to the instruction of core network control surface functional entity.
Specifically, in this step, RAN receives the message on hold of the core network control surface functional entity, according to described The upstream data bag that message on hold caching receives.
Step 202, according to the instruction of the core network control surface functional entity carry out user plane path renewal.
In this step, when needing to increase user plane anchor point for the PDU sessions activated, RAN receives the core net 3rd user plane more new command of chain of command functional entity, will be with the IP anchor points according to the 3rd user plane more new command Between tunnel be updated to tunnel between the user plane anchor point.Wherein, wrapped in the 3rd user plane more new command Include：The Tunnel Identifier and IP address of the user plane anchor point.
In this step, when needing to delete user plane anchor point for the PDU sessions activated, RAN receives the core net 6th user plane more new command of chain of command functional entity, will be with the user plane according to the 6th user plane more new command Tunnel between anchor point is updated to the tunnel between the IP anchor points.Wherein, wrapped in the 6th user plane more new command Include：The Tunnel Identifier and IP address of IP anchor points corresponding to the PDU sessions.
In addition, after user plane path renewal is completed, RAN can also send user to the core network control surface functional entity Face updates response message, and user plane renewal response message is used to triggering the core network control surface functional entity to described IP anchor points corresponding to PDU sessions send solution message on hold.
Step 203, pass through the user plane path transmission upstream data bag after renewal.
Specifically, in this step, when needing to increase user plane anchor point for the PDU sessions activated, institute by with institute The tunnel stated between user plane anchor point sends upstream data bag；When needing to delete user plane anchor point for the PDU sessions activated, Upstream data bag is sent by the tunnel between IP anchor points.
As seen from the above, in embodiments of the present invention, when needs increase for the protocol Data Unit PDU sessions activated Or when deleting user plane anchor point, cache the upstream data bag received and downlink data packet respectively by RAN and IP anchor points, it is to be done The user plane path after renewal is recycled to send downlink data packet after user plane path renewal.So utilize the embodiment of the present invention Scheme avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve transmission and the business of data Reliability.
As shown in figure 4, the data transmission method of the embodiment of the present invention three, applied to IP anchor points, including：
Step 301, when need for activated protocol Data Unit PDU sessions increase or delete user plane anchor point when, root Downlink data packet is cached according to the instruction of core network control surface functional entity.
Specifically, in this step, when needs are the protocol Data Unit PDU sessions increase activated or deletion user plane During anchor point, IP anchor points receive the message on hold of the core network control surface functional entity, are cached and received according to the message on hold The downlink data packet arrived.
Step 302, according to the instruction of the core network control surface functional entity carry out user plane path renewal.
Specifically, in this step, when needing to increase user plane anchor point for the PDU sessions activated, IP anchor points receive The second user face more new command of the core network control surface functional entity, will be with according to the second user face more new command Tunnel between RAN is updated to the tunnel between the user plane anchor point.Wherein, in the second user face more new command Including：The Tunnel Identifier and IP address of the user plane anchor point.
When needing to delete user plane anchor point for the PDU sessions activated, IP anchor points receive the core network control surface work( 5th user plane more new command of energy entity, will be between the user plane anchor point according to the 5th user plane more new command Tunnel be updated to tunnel between the RAN.Wherein, include in the 5th user plane more new command：RAN tunnel Mark and IP address.
Step 303, pass through the user plane path transmission downlink data packet after renewal.
Specifically, in this step, IP anchor points receive the solution message on hold of the core network control surface functional entity.
When needing to increase user plane anchor point for the PDU sessions activated, IP anchor points pass through according to the solution message on hold Tunnel between the RAN and the user plane anchor point sends downlink data packet；Used when needing to delete for the PDU sessions activated During the anchor point of family face, IP anchor points send downlink data packet according to the solution message on hold by the tunnel between the RAN.
As seen from the above, in embodiments of the present invention, when needs increase for the protocol Data Unit PDU sessions activated Or when deleting user plane anchor point, cache the upstream data bag received and downlink data packet respectively by RAN and IP anchor points, it is to be done The user plane path after renewal is recycled to send downlink data packet after user plane path renewal.So utilize the embodiment of the present invention Scheme avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve transmission and the business of data Reliability.
As shown in figure 5, the data transmission method of the embodiment of the present invention four, applied to user plane anchor point, including：
Step 401, when need for activated protocol Data Unit PDU sessions increase or delete user plane anchor point when, root User plane path renewal is carried out according to the instruction of core network control surface functional entity.
When needing to increase user plane anchor point for the PDU sessions activated, user plane anchor point receives the core net control The first user plane more new command of face functional entity, according to the first user plane more new command, establish between the RAN Tunnel between tunnel and foundation and the IP anchor points.Wherein, include in the first user plane more new command：The use The Tunnel Identifier and IP address of family face anchor point, RAN Tunnel Identifier and IP address, the Tunnel Identifier and IP address of IP anchor points.This Outside, user plane anchor point passes through the tunnel transmission up-downgoing packet between RAN.
When needing to delete user plane anchor point for the PDU sessions activated, user plane anchor point receives the core net control The fourth user face more new command of face functional entity；Deleted and the PDU sessions phase according to the fourth user face more new command The information of pass.
As seen from the above, in embodiments of the present invention, when needs increase for the protocol Data Unit PDU sessions activated Or when deleting user plane anchor point, cache the upstream data bag received and downlink data packet respectively by RAN and IP anchor points, it is to be done The user plane path after renewal is recycled to send downlink data packet after user plane path renewal.So utilize the embodiment of the present invention Scheme avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve transmission and the business of data Reliability.
In fifth embodiment of the invention, after UE establishes first PDU session of certain data network, initiated with UE Need exemplified by two PDU sessions are aggregated on a user plane anchor point to the Article 2 PDU sessions of identical data network It is described.
For first PDU session having built up, its detailed process established is not limited in embodiments of the present invention. It is a kind of possible to be achieved in that process as shown in Figure 6.
As shown in fig. 6, establishing the process of first PDU session includes：
Step 501, UE send session establishment request through Radio Access Network RAN to core network control surface functional entity SM.
The context of step 502, core network control surface functional entity SM and user face data functional entity checking UE.
Step 503, core network control surface functional entity SM are with policy control entity using strategy of operator etc..
Core network control surface functional entity SM is responsible for the functions such as selection and the address mark distribution of user plane anchor point.
After the completion of step 504, above procedure, core network control surface functional entity SM selection user plane anchor points.
Assuming that here, SM have selected UPGW1 as user plane anchor point.
Step 505, core network control surface functional entity request RAN are that session distributes resource.RAN is returned for descending to SM The RAN of transmission IP address and Tunnel Identifier：IP address_RAN and Tunnel Identifier _ RAN.
The user plane information of step 506, SM configuration core nets.SM sends the up-downgoing IP in user plane tunnel to UPGW1 Address and Tunnel Identifier.Wherein descending IP address and Tunnel Identifier be IP address_RAN and Tunnel Identifier _ RAN, up IP address and Tunnel Identifier are the IP address and Tunnel Identifier that SM is UPGW1 distribution：IP address_ UPGW1 and Tunnel Identifier _ UPGW1.
Step 507, SM return to IP address and Tunnel Identifier for uplink to RAN, and as SM is UPGW points The IP address_UPGW1 and Tunnel Identifier _ UPGW1 matched somebody with somebody.
When UE has initiated when the establishing process of Article 2 PDU session to identical data network, network need by This two PDU session are aggregated on a user plane anchor point, therefore network needs to initiate the modification process of user plane path.
As shown in fig. 7, the data transmission method of the embodiment of the present invention five, including：
Step 601, SM receive the new PDU session requests to data network of UE initiations.SM initiates to IP anchor points UPGW1 Message on hold.After receiving this message on hold, UPGW1 will cache downlink data packet, stop sending downlink data packet to RAN.
Step 602, SM send message on hold to RAN.After receiving this message on hold, RAN caching upstream data bags, stop Packet on to UPGW1 transmissions.
Wherein, step 601 and step 602 can perform simultaneously, have no strict precedence relationship.
Step 603, SM initiate user plane renewal process to UPGW2.
Specifically, SM sends the first user plane more new command to UPGW2, wrapped in the first user plane more new command Include：UPGW2 Tunnel Identifier and IP address, the Tunnel Identifier and IP address of the RAN, UPGW1 Tunnel Identifier and IP address.
Wherein, the first user plane more new command is used for, the tunnel established between the RAN and the UPGW2 and The tunnel established between the UPGW2 and the UPGW1.
Step 604, SM initiate user plane renewal process to UPGW1.
Specifically, SM sends second user face more new command to the IP anchor points, in the second user face more new command Include：UPGW2 Tunnel Identifier and IP address.
Wherein, the second user face more new command is used for, and the tunnel between the UPGW1 and the RAN is updated to Tunnel between the UPGW1 and the UPGW2.
Wherein, step 603 and step 604 can perform simultaneously, have no strict precedence relationship.
Step 605, SM initiate user plane renewal process to RAN.
Specifically, SM sends the 3rd user plane more new command to the RAN, wrapped in the 3rd user plane more new command Include：The Tunnel Identifier and IP address of the UPGW2.Wherein, the 3rd user plane more new command is used for, by the IP anchor points with Tunnel between the RAN is updated to the tunnel between the RAN and the UPGW2.
During above-mentioned steps 603,604,605, when completing in corresponding user plane renewal process, UPGW2, UPGW1, RAN can send user plane renewal response message to SM.
Step 606, RAN complete solution pending operation, and upstream data bag is sent by the tunnel between the UPGW2.That is, RAN sends upstream data bag to UPGW2, and the upstream data bag is sent to UPGW1 by UPGW2 again, is sent from UPGW1 to outside.
Step 607, SM instructions UPGW1 carry out solution pending operation.
Specifically, SM updates response message according to RAN user plane sends solution message on hold to the UPGW1, institute is triggered State UPGW1 and downlink data packet is sent by the tunnel between the RAN and the UPGW2.
Step 608, UPGW1 recover the transmission of downlink data packet.
In the process, UPGW1 sends downlink data packet by the tunnel between the RAN and the UPGW2, i.e., Downlink data packet is sent to UPGW2 by UPGW1, then delivers a packet to RAN by UPGW2.
In above process, SM needs to configure UPGW1 and UPGW2 path and RAN user plane path.
Before routing update, the Tunnel Identifier that RAN and UPGW1 are preserved is respectively：
RAN：IP address_RAN, Tunnel Identifier _ RAN；IP address_UPGW1, Tunnel Identifier _ UPGW1；
UPGW1：IP address_UPGW1, Tunnel Identifier _ UPGW1；IP address_RAN, Tunnel Identifier _ RAN；
After routing update, the Tunnel Identifier that each node preserves is respectively：
RAN：IP address_RAN, Tunnel Identifier _ RAN；IP address_UPGW2, Tunnel Identifier _ UPGW2；
UP GW1：IP address_UPGW1, Tunnel Identifier _ UPGW1；IP address_UPGW2*, Tunnel Identifier _ UPGW2*；
UPGW2：First group of mark：IP address_UPGW2, Tunnel Identifier _ UPGW2；IP address_RAN, tunnel Mark _ RAN；Second group of mark：IP address_UPGW2*, Tunnel Identifier _ UPGW2*；IP address_UPGW1, tunnel mark Knowledge _ UPGW1.
Wherein, the tunnel transmission that first group of mark that UGW2 is preserved is used between RAN and UPGW2, second group of mark are used for Data transfer between UPGW2 and UPGW1.
Meanwhile in above process, it is necessary to SM is updated to the data path of tri- nodes of RAN, UPGW1, UPGW2, And user plane anchor point each between be unable to direct communication, i.e. RAN, there is no Signalling exchange function between UPGW1 and UPGW2, And core network control surface SM can only be leaned on to be adjusted.
As seen from the above, in embodiments of the present invention, when needs increase for the protocol Data Unit PDU sessions activated Add, the upstream data bag received and downlink data packet are cached respectively by RAN and IP anchor points, after user plane path renewal to be done The user plane path after renewal is recycled to send downlink data packet.So avoided using the scheme of the embodiment of the present invention existing The situation that packet loss or receiving terminal node in technology report an error, improves the transmission of data and the reliability of business.
In embodiments of the invention six, it is assumed that the data transmission channel of PDU sessions is RAN, UGW2, UGW1, and UPGW1 is IP anchor points, UPGW2 are user plane anchor point.Assuming that UE has deactivated a PDU session, network is needed also to keep state of activation Another PDU session more new route again, i.e., delete UPGW2, data channel after path integration from data transmission path For RAN to UPGW1.
As shown in figure 8, the data transmission method of the embodiment of the present invention six, including：
Step 701, SM determine to initiate path integration process to the PDU session being active.SM is to IP anchor points UPGW1 initiates message on hold.After receiving this message on hold, UPGW1 will cache downlink data packet, stop descending to RAN transmissions Packet.
Step 702, SM send message on hold to RAN.After receiving this message on hold, RAN caching upstream data bags, stop Packet on to UPGW1 transmissions.
Wherein, step 701 and step 702 can perform simultaneously, have no strict precedence relationship.
Step 703, SM initiate user plane renewal process to UPGW2.
Specifically, SM sends fourth user face more new command to UPGW2, indicate that the UPGW2 is deleted and the PDU sessions Related information.
Step 704, SM initiate user plane renewal process to UPGW1.
Specifically, SM wraps to the user plane more new command of IP anchor points the 5th in the 5th user plane more new command Include：The Tunnel Identifier and IP address of the RAN.
Wherein, the 5th user plane more new command is used for, and the tunnel between the UPGW1 and the UPGW2 is updated For the tunnel between the UPGW1 and the RAN.
Wherein, step 703 and step 704 can perform simultaneously, have no strict precedence relationship.
Step 705, SM initiate user plane renewal process to RAN.
Specifically, SM sends the 6th user plane more new command to the RAN, in the 6th user plane more new command bag Include：The Tunnel Identifier and IP address of the UPGW1.Wherein, the 6th user plane more new command is used for, by the RAN and institute State the tunnel that the tunnel between UPGW2 is updated between the RAN and the UPGW1.
During above-mentioned steps 703,704,705, when completing in corresponding user plane renewal process, UPGW2, UPGW1, RAN can send user plane renewal response message to SM.
Step 706, RAN complete solution pending operation, and upstream data bag is sent by the tunnel between the UPGW1.That is, The upstream data bag is sent to UPGW1 by RAN, is sent from UPGW1 to outside.
Step 707, SM instructions UPGW1 carry out solution pending operation.
Specifically, SM updates response message according to RAN user plane sends solution message on hold to the UPGW1, institute is triggered State UPGW1 and downlink data packet is sent by the tunnel between the RAN.
Step 708, UPGW1 recover the transmission of downlink data packet.
In the process, UPGW1 sends downlink data packet by tunnel between the RAN, i.e. UPGW1 is by lower line number RAN is sent to according to bag.
As seen from the above, in embodiments of the present invention, when needs are deleted for the protocol Data Unit PDU sessions activated During user plane anchor point, the upstream data bag received and downlink data packet, user plane to be done are cached respectively by RAN and IP anchor points The user plane path after renewal is recycled to send downlink data packet after routing update.So scheme using the embodiment of the present invention Avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve data transmission and business it is reliable Property.
As shown in figure 9, the data transmission device of the embodiment of the present invention seven, including：
First indicating module 801, needed for working as the protocol Data Unit PDU sessions increase activated or deletion user During the anchor point of face, indicate that IP anchor points corresponding to the PDU sessions cache downlink data packet；First path update instruction module 802, use User plane path renewal is carried out in the instruction user plane anchor point and the IP anchor points；Second routing update indicating module 803, use User plane path renewal is carried out in instruction RAN；Second indicating module 804, for indicating that the IP anchor points pass through the use after renewal Family face path sends downlink data packet.
Wherein, in order to be further ensured that the reliability of the transmission of data and business, first indicating module 801 is also used In when needing protocol Data Unit PDU sessions increase to have activated or deleting user plane anchor point, indicating RAN caching Upstream data bag.
Wherein, first indicating module 801 includes：First message on hold sending submodule, for being sent to the RAN Message on hold, the message on hold are used to indicate the RAN cachings upstream data bag；Second message on hold sending submodule, use In sending message on hold to the IP anchor points, the message on hold is used to indicate the IP anchor points caching downlink data packet.
Wherein, the first path update instruction module 802 includes：
First user plane more new command sending submodule, need to increase user plane anchor for the PDU sessions activated for working as During point, the first user plane more new command is sent to the user plane anchor point, is included in the first user plane more new command：Institute State the Tunnel Identifier and IP address of user plane anchor point, the Tunnel Identifier and IP address of the RAN, the Tunnel Identifier of the IP anchor points And IP address；Second user face more new command sending submodule, need to increase user plane anchor for the PDU sessions activated for working as During point, second user face more new command is sent to the IP anchor points, is included in the second user face more new command：The use The Tunnel Identifier and IP address of family face anchor point；The first user plane more new command is used for, and establishes the RAN and the user plane Tunnel between anchor point and the tunnel established between the user plane anchor point and the IP anchor points；The second user face renewal Instruct and be used for, the tunnel between the IP anchor points and the RAN is updated between the IP anchor points and the user plane anchor point Tunnel.
Now, the second routing update indicating module 803 is specifically used for：When needs increase for the PDU sessions activated During user plane anchor point, the 3rd user plane more new command is sent to the RAN, is included in the 3rd user plane more new command： The Tunnel Identifier and IP address of the user plane anchor point；The 3rd user plane more new command is used for, by the IP anchor points and institute State the tunnel that the tunnel between RAN is updated between the RAN and the user plane anchor point.
Wherein, the first path update instruction module 802 includes：Fourth user face more new command sending submodule, use In when needing to delete user plane anchor point for the PDU sessions activated, the renewal of fourth user face is sent to the user plane anchor point Instruction；5th user plane more new command sending submodule, need to delete user plane anchor point for the PDU sessions activated for working as When, the 5th user plane more new command is sent to the IP anchor points, is included in the 5th user plane more new command：The RAN Tunnel Identifier and IP address；The fourth user face more new command is used for, and indicates that the user plane anchor point is deleted and the PDU The related information of session；The 5th user plane more new command is used for, by between the IP anchor points and the user plane anchor point Tunnel is updated to the tunnel between the IP anchor points and the RAN.
Now, the second routing update indicating module 803 is specifically used for：When needs are deleted for the PDU sessions activated During user plane anchor point, the 6th user plane more new command is sent to the RAN, is included in the 6th user plane more new command： The Tunnel Identifier and IP address of the IP anchor points；6th user plane more new command is used for the RAN and the user plane Tunnel between anchor point is updated to the tunnel between the RAN and the IP anchor points.
Wherein, second indicating module 804 includes：Receiving submodule, for receiving the user plane of the RAN transmissions more New response message；Sending submodule, for updating response message according to the user plane, send solution hang-up to the IP anchor points and disappear Breath；When needing to increase user plane anchor point for the PDU sessions activated, the solution message on hold is led to for triggering the IP anchor points The tunnel crossed between the RAN and the user plane anchor point sends downlink data packet；When needs are deleted for the PDU sessions activated During user plane anchor point, the solution message on hold passes through the tunnel between the RAN and the IP anchor points for triggering the IP anchor points Road sends downlink data packet.
The operation principle of device of the present invention can refer to the description of preceding method embodiment, and described device can be located at core In heart network control surface functional entity.
As seen from the above, in embodiments of the present invention, when needs are deleted for the protocol Data Unit PDU sessions activated During user plane anchor point, the upstream data bag received and downlink data packet, user plane to be done are cached respectively by RAN and IP anchor points The user plane path after renewal is recycled to send downlink data packet after routing update.So scheme using the embodiment of the present invention Avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve data transmission and business it is reliable Property.
As shown in Figure 10, the data transmission device of the embodiment of the present invention eight, including：
Cache module 901, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane anchor for working as During point, upstream data bag is cached according to the instruction of core network control surface functional entity；Routing update module 902, for according to institute The instruction for stating core network control surface functional entity carries out user plane path renewal；Packet sending module 903, for passing through renewal User plane path afterwards sends upstream data bag.
Wherein, the cache module 901 includes：Receiving submodule, for receiving the core network control surface functional entity Message on hold；Cache sub-module, for the upstream data bag received according to message on hold caching.
Wherein, the routing update module 902 includes：First command reception submodule, need to have activated for working as When PDU sessions increase user plane anchor point, the 3rd user plane more new command of the core network control surface functional entity is received, in institute Stating the 3rd user plane more new command includes：The Tunnel Identifier and IP address of the user plane anchor point；First path updates submodule Block, for according to the 3rd user plane more new command, the tunnel between the IP anchor points to be updated to and the user plane Tunnel between anchor point.
Wherein, the routing update module 902 includes：Second command reception submodule, need to have activated for working as When user plane anchor point is deleted in PDU sessions, the 6th user plane more new command of the core network control surface functional entity is received, in institute Stating the 6th user plane more new command includes：The Tunnel Identifier and IP address of IP anchor points corresponding to the PDU sessions；Second path Submodule is updated, for according to the 6th user plane more new command, the tunnel between the user plane anchor point to be updated to With the tunnel between the IP anchor points.
Wherein, the packet sending module 903 is specifically used for：When needs increase user plane for the PDU sessions activated During anchor point, upstream data bag is sent by the tunnel between the user plane anchor point；When needs are deleted for the PDU sessions activated During except user plane anchor point, upstream data bag is sent by the tunnel between IP anchor points.
As shown in figure 11, described device also includes：Message transmission module 904, for the core network control surface function Entity sends user plane renewal response message, and the user plane renewal response message is used to trigger the core network control surface function IP anchor points corresponding to entity to the PDU sessions send solution message on hold.
The operation principle of device of the present invention can refer to the description of preceding method embodiment, and described device can be located at In RAN.
As seen from the above, in embodiments of the present invention, when needs are deleted for the protocol Data Unit PDU sessions activated During user plane anchor point, the upstream data bag received and downlink data packet, user plane to be done are cached respectively by RAN and IP anchor points The user plane path after renewal is recycled to send downlink data packet after routing update.So scheme using the embodiment of the present invention Avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve data transmission and business it is reliable Property.
As shown in figure 12, the data transmission device of the embodiment of the present invention nine, including：
Cache module 1001, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane for working as During anchor point, downlink data packet is cached according to the instruction of core network control surface functional entity；Routing update module 1002, for basis The instruction of the core network control surface functional entity carries out user plane path renewal；Packet sending module 1003, for passing through User plane path after renewal sends downlink data packet.
Wherein, the cache module 1001 includes：Receiving submodule, for receiving the core network control surface functional entity Message on hold；Cache sub-module, for the downlink data packet received according to message on hold caching.
Wherein, the routing update module 1002 includes：First command reception submodule, need to have activated for working as When PDU sessions increase user plane anchor point, the second user face more new command of the core network control surface functional entity is received, in institute Stating second user face more new command includes：The Tunnel Identifier and IP address of the user plane anchor point；First path updates submodule Block, for according to the second user face more new command, the tunnel between RAN to be updated between the user plane anchor point Tunnel.
Wherein, the routing update module 1002 includes：Second command reception submodule, need to have activated for working as When user plane anchor point is deleted in PDU sessions, the 5th user plane more new command of the core network control surface functional entity is received, in institute Stating the 5th user plane more new command includes：RAN Tunnel Identifier and IP address；Second routing update submodule, for basis The 5th user plane more new command, the tunnel tunnel between the user plane anchor point being updated between the RAN.
Wherein, the packet sending module 1003 includes：
Receiving submodule, for receiving the solution message on hold of the core network control surface functional entity；
Packet sending submodule, for when needing to increase user plane anchor point for the PDU sessions that have activated, according to described Solve message on hold and downlink data packet is sent by the tunnel between RAN and the user plane anchor point；When needing for the PDU that has activated When user plane anchor point is deleted in session, downlink data packet is sent by the tunnel between the RAN according to the solution message on hold.
The operation principle of device of the present invention can refer to the description of preceding method embodiment, and described device can be located at In UPGW.
As seen from the above, in embodiments of the present invention, when needs are deleted for the protocol Data Unit PDU sessions activated During user plane anchor point, the upstream data bag received and downlink data packet, user plane to be done are cached respectively by RAN and IP anchor points The user plane path after renewal is recycled to send downlink data packet after routing update.So scheme using the embodiment of the present invention Avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve data transmission and business it is reliable Property.
As shown in figure 13, the data transmission device of the embodiment of the present invention ten, including：
Routing update module 1101, need to use for the protocol Data Unit PDU sessions increase or deletion activated for working as During the anchor point of family face, user plane path renewal is carried out according to the instruction of core network control surface functional entity.
Wherein, the routing update module 1101 includes：
First command reception submodule, for when needing to increase user plane anchor point for the PDU sessions activated, receiving institute The first user plane more new command of core network control surface functional entity is stated, is included in the first user plane more new command：Institute State the Tunnel Identifier and IP address of user plane anchor point, RAN Tunnel Identifier and IP address, the Tunnel Identifier and IP of IP anchor points Location；First path updates submodule, for the tunnel according to the first user plane more new command, established between the RAN And the tunnel established between the IP anchor points.
Wherein, the routing update module 1101 includes：Second command reception submodule, need to have activated for working as When user plane anchor point is deleted in PDU sessions, the fourth user face more new command of the core network control surface functional entity is received；Second Routing update submodule, for deleting the information related to the PDU sessions according to the fourth user face more new command.
As shown in figure 14, described device also includes：Packet sending module 1102, for working as the PDU needed to have activated When session increases user plane anchor point, pass through the tunnel transmission up-downgoing packet between RAN.
The operation principle of device of the present invention can refer to the description of preceding method embodiment, and described device can be located at core In heart network control surface functional entity.
As seen from the above, in embodiments of the present invention, when needs are deleted for the protocol Data Unit PDU sessions activated During user plane anchor point, the upstream data bag received and downlink data packet, user plane to be done are cached respectively by RAN and IP anchor points The user plane path after renewal is recycled to send downlink data packet after routing update.So scheme using the embodiment of the present invention Avoid the situation that packet loss or receiving terminal node of the prior art report an error, improve data transmission and business it is reliable Property.
Embodiments of the invention 11 provide a kind of data processing equipment, including：Processor；And by EBI with The memory that the processor is connected, the memory are used to store the processor used program when performing operation And data, when processor calls and performed the program and data stored in the memory, including realize following function Module or unit：
First indicating module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane for working as During anchor point, indicate that IP anchor points corresponding to the PDU sessions cache downlink data packet；
First path update instruction module, for indicating that the user plane anchor point and the IP anchor points carry out user plane path Renewal；
Second routing update indicating module, for indicating that RAN carries out user plane path renewal；
Second indicating module, for indicating that the IP anchor points send downlink data packet by the user plane path after renewal.
Embodiments of the invention 12 provide a kind of data processing equipment, including：Processor；And by EBI with The memory that the processor is connected, the memory are used to store the processor used program when performing operation And data, when processor calls and performed the program and data stored in the memory, including realize following function Module or unit：
Cache module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane anchor point for working as When, upstream data bag is cached according to the instruction of core network control surface functional entity；
Routing update module, for carrying out user plane path more according to the instruction of the core network control surface functional entity Newly；
Packet sending module, for sending upstream data bag by the user plane path after renewal.
Embodiments of the invention 13 provide a kind of data processing equipment, including：Processor；And by EBI with The memory that the processor is connected, the memory are used to store the processor used program when performing operation And data, when processor calls and performed the program and data stored in the memory, including realize following function Module or unit：
Cache module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane anchor point for working as When, downlink data packet is cached according to the instruction of core network control surface functional entity；
Routing update module, for carrying out user plane path more according to the instruction of the core network control surface functional entity Newly；
Packet sending module, for sending downlink data packet by the user plane path after renewal.
Embodiments of the invention 14 provide a kind of data processing equipment, including：Processor；And by EBI with The memory that the processor is connected, the memory are used to store the processor used program when performing operation And data, when processor calls and performed the program and data stored in the memory, including realize following function Module or unit：
Routing update module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane for working as During anchor point, user plane path renewal is carried out according to the instruction of core network control surface functional entity.
It should be noted that the present invention the 11st, 12,13, the device that provides of 14 embodiments be can correspond to it is real The device for the data transmission method that existing above method embodiment provides, therefore the data transmission method of above method embodiment offer All embodiments can to should apply to the 11st, 12,13,14 embodiments, and can reach same or analogous Beneficial effect.
In several embodiments provided herein, it should be understood that disclosed method and apparatus, can be by other Mode realize.For example, device embodiment described above is only schematical, for example, the division of the unit, only For a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can combine Or another system is desirably integrated into, or some features can be ignored, or do not perform.Another, shown or discussed phase Coupling or 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, mechanical or other forms.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also That the independent physics of unit includes, can also two or more units it is integrated in a unit.Above-mentioned integrated list Member can both be realized in the form of hardware, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit 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 causing a computer Equipment (can be personal computer, server, or network equipment etc.) performs receiving/transmission method described in each embodiment of the present invention Part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (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.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (44)

  1. A kind of 1. data transmission method, it is characterised in that including：
    When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, the PDU sessions are indicated Corresponding IP anchor points cache downlink data packet；
    Indicate that the user plane anchor point and the IP anchor points carry out user plane path renewal；
    Indicate that Radio Access Network RAN carries out user plane path renewal；
    Indicate that the IP anchor points send downlink data packet by the user plane path after renewal.
  2. 2. according to the method for claim 1, it is characterised in that when needing for the protocol Data Unit PDU sessions that have activated When increase or deletion user plane anchor point, methods described also includes：
    Indicate the RAN cachings upstream data bag；
    The instruction Radio Access Network RAN caching upstream data bags, including：
    Message on hold is sent to the RAN, the message on hold is used to indicate the RAN cachings upstream data bag；
    IP anchor points caching downlink data packet corresponding to the instruction PDU sessions, including：
    Message on hold is sent to the IP anchor points, the message on hold is used to indicate the IP anchor points caching downlink data packet.
  3. 3. according to the method for claim 1, it is characterised in that when needs increase user plane anchor for the PDU sessions activated During point, the instruction user plane anchor point and the IP anchor points carry out user plane path renewal, including：
    The first user plane more new command is sent to the user plane anchor point, is included in the first user plane more new command：Institute State the Tunnel Identifier and IP address of user plane anchor point, the Tunnel Identifier and IP address of the RAN, the Tunnel Identifier of the IP anchor points And IP address；
    Second user face more new command is sent to the IP anchor points, is included in the second user face more new command：The use The Tunnel Identifier and IP address of family face anchor point；
    The first user plane more new command is used for, the tunnel established between the RAN and the user plane anchor point and foundation Tunnel between the user plane anchor point and the IP anchor points；
    The second user face more new command is used for, and the tunnel between the IP anchor points and the RAN is updated into the IP anchors Tunnel between point and the user plane anchor point.
  4. 4. according to the method for claim 1, it is characterised in that when needs increase user plane anchor for the PDU sessions activated During point, the instruction Radio Access Network RAN carries out user plane path renewal, including：
    The 3rd user plane more new command is sent to the RAN, is included in the 3rd user plane more new command：The user plane The Tunnel Identifier and IP address of anchor point；
    The 3rd user plane more new command is used for, by the tunnel between the IP anchor points and the RAN be updated to the RAN with Tunnel between the user plane anchor point.
  5. 5. according to the method for claim 1, it is characterised in that when needs delete user plane anchor for the PDU sessions activated During point, the instruction user plane anchor point and the IP anchor points carry out user plane path renewal, including：
    Fourth user face more new command is sent to the user plane anchor point；
    The 5th user plane more new command is sent to the IP anchor points, is included in the 5th user plane more new command：The RAN Tunnel Identifier and IP address；
    The fourth user face more new command is used for, and indicates that the user plane anchor point deletes the information related to the PDU sessions；
    The 5th user plane more new command is used for, and the tunnel between the IP anchor points and the user plane anchor point is updated into institute State the tunnel between IP anchor points and the RAN.
  6. 6. according to the method for claim 1, it is characterised in that when needs delete user plane anchor for the PDU sessions activated During point, the instruction Radio Access Network RAN carries out user plane path renewal, including：
    The 6th user plane more new command is sent to the RAN, is included in the 6th user plane more new command：The IP anchor points Tunnel Identifier and IP address；
    6th user plane more new command is described for the tunnel between the RAN and the user plane anchor point to be updated to Tunnel between RAN and the IP anchor points.
  7. 7. according to the method for claim 1, it is characterised in that the instruction IP anchor points pass through the user plane after renewal Path sends downlink data packet, including：
    Receive the user plane renewal response message that the RAN is sent；
    Response message is updated according to the user plane, solution message on hold is sent to the IP anchor points；
    When needing to increase user plane anchor point for the PDU sessions activated, the solution message on hold is used to trigger the IP anchor points Downlink data packet is sent by the tunnel between the RAN and the user plane anchor point；
    When needing to delete user plane anchor point for the PDU sessions activated, the solution message on hold is used to trigger the IP anchor points Downlink data packet is sent by the tunnel between the RAN and the IP anchor points.
  8. A kind of 8. data transmission method, it is characterised in that including：
    When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, controlled according to core net The instruction caching upstream data bag of face functional entity；
    User plane path renewal is carried out according to the instruction of the core network control surface functional entity；
    Upstream data bag is sent by the user plane path after renewal.
  9. 9. according to the method for claim 8, it is characterised in that the instruction according to core network control surface functional entity is delayed Upstream data bag is deposited, including：
    Receive the message on hold of the core network control surface functional entity；
    The upstream data bag received according to message on hold caching.
  10. 10. according to the method for claim 8, it is characterised in that when needs increase user plane anchor for the PDU sessions activated It is described that user plane path renewal is carried out according to the instruction of the core network control surface functional entity during point, including：
    The 3rd user plane more new command of the core network control surface functional entity is received, in the 3rd user plane more new command Include：The Tunnel Identifier and IP address of the user plane anchor point；
    According to the 3rd user plane more new command, the tunnel between the IP anchor points is updated to and the user plane anchor point Between tunnel.
  11. 11. according to the method for claim 8, it is characterised in that when needs delete user plane anchor for the PDU sessions activated It is described that user plane path renewal is carried out according to the instruction of the core network control surface functional entity during point, including：
    The 6th user plane more new command of the core network control surface functional entity is received, in the 6th user plane more new command Include：The Tunnel Identifier and IP address of IP anchor points corresponding to the PDU sessions；
    According to the 6th user plane more new command, the tunnel between the user plane anchor point is updated to and the IP anchor points Between tunnel.
  12. 12. according to any described methods of claim 8-11, it is characterised in that
    When needing to increase user plane anchor point for the PDU sessions activated, in the user plane path transmission by after renewal Row packet, including：Upstream data bag is sent by the tunnel between the user plane anchor point；
    When needing to delete user plane anchor point for the PDU sessions activated, in the user plane path transmission by after renewal Row packet, including：Upstream data bag is sent by the tunnel between IP anchor points.
  13. 13. according to any described methods of claim 8-11, it is characterised in that described according to the core network control surface work( After the instruction of energy entity carries out user plane path renewal, methods described also includes：
    User plane renewal response message is sent to the core network control surface functional entity, the user plane renewal response message is used In triggering the core network control surface functional entity solution message on hold is sent to IP anchor points corresponding to the PDU sessions.
  14. A kind of 14. data transmission method, it is characterised in that including：
    When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, controlled according to core net The instruction caching downlink data packet of face functional entity；
    User plane path renewal is carried out according to the instruction of the core network control surface functional entity；
    Downlink data packet is sent by the user plane path after renewal.
  15. 15. according to the method for claim 14, it is characterised in that the instruction according to core network control surface functional entity Downlink data packet is cached, including：
    Receive the message on hold of the core network control surface functional entity；
    The downlink data packet received according to message on hold caching.
  16. 16. according to the method for claim 14, it is characterised in that when needs increase user plane for the PDU sessions activated It is described that user plane path renewal is carried out according to the instruction of the core network control surface functional entity during anchor point, including：
    The second user face more new command of the core network control surface functional entity is received, in the second user face more new command Include：The Tunnel Identifier and IP address of the user plane anchor point；
    According to the second user face more new command, the tunnel between RAN is updated between the user plane anchor point Tunnel.
  17. 17. according to the method for claim 14, it is characterised in that when needs delete user plane for the PDU sessions activated It is described that user plane path renewal is carried out according to the instruction of the core network control surface functional entity during anchor point, including：
    The 5th user plane more new command of the core network control surface functional entity is received, in the 5th user plane more new command Include：RAN Tunnel Identifier and IP address；
    According to the 5th user plane more new command, by the tunnel between the user plane anchor point be updated to the RAN it Between tunnel.
  18. 18. according to any described methods of claim 14-17, it is characterised in that the user plane path by after renewal Downlink data packet is sent, including：
    Receive the solution message on hold of the core network control surface functional entity；
    When needing to increase user plane anchor point for the PDU sessions activated, RAN and the use are passed through according to the solution message on hold Tunnel between the anchor point of family face sends downlink data packet；
    When needing to delete user plane anchor point for the PDU sessions that have activated, according to the solution message on hold by with the RAN it Between tunnel send downlink data packet.
  19. A kind of 19. data transmission method, it is characterised in that including：
    When needing protocol Data Unit PDU sessions increase or the deletion user plane anchor point to have activated, controlled according to core net The instruction of face functional entity carries out user plane path renewal.
  20. 20. according to the method for claim 19, it is characterised in that when needs increase user plane for the PDU sessions activated It is described that user plane path renewal is carried out according to the instruction of core network control surface functional entity during anchor point, including：
    The first user plane more new command of the core network control surface functional entity is received, in the first user plane more new command Include：The Tunnel Identifier and IP address of the user plane anchor point, RAN Tunnel Identifier and IP address, the tunnel mark of IP anchor points Knowledge and IP address；
    According to the first user plane more new command, the tunnel established between the RAN and establish with the IP anchor points it Between tunnel.
  21. 21. according to the method for claim 19, it is characterised in that when needs delete user plane for the PDU sessions activated It is described that user plane path renewal is carried out according to the instruction of core network control surface functional entity during anchor point, including：
    Receive the fourth user face more new command of the core network control surface functional entity；
    The information related to the PDU sessions is deleted according to the fourth user face more new command.
  22. 22. according to any described methods of claim 19-21, it is characterised in that when needs increase for the PDU sessions activated During user plane anchor point, methods described also includes：
    Pass through the tunnel transmission up-downgoing packet between RAN.
  23. A kind of 23. data transmission device, it is characterised in that including：
    First indicating module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane anchor point for working as When, indicate that IP anchor points corresponding to the PDU sessions cache downlink data packet；
    First path update instruction module, for indicating that the user plane anchor point and the IP anchor points carry out user plane path more Newly；
    Second routing update indicating module, for indicating that Radio Access Network RAN carries out user plane path renewal；
    Second indicating module, for indicating that the IP anchor points send downlink data packet by the user plane path after renewal.
  24. 24. device according to claim 23, it is characterised in that first indicating module is additionally operable to, when needs is When the protocol Data Unit PDU sessions increase of activation or deletion user plane anchor point, the RAN cachings upstream data bag is indicated；
    First indicating module includes：
    First message on hold sending submodule, for sending message on hold to the RAN, the message on hold is described for indicating RAN caches upstream data bag；
    Second message on hold sending submodule, for sending message on hold to the IP anchor points, the message on hold is used to indicate The IP anchor points cache downlink data packet.
  25. 25. device according to claim 23, it is characterised in that the first path update instruction module includes：
    First user plane more new command sending submodule, for when needing to increase user plane anchor point for the PDU sessions that have activated, The first user plane more new command is sent to the user plane anchor point, is included in the first user plane more new command：The use The Tunnel Identifier and IP address of family face anchor point, the Tunnel Identifier and IP address of the RAN, the Tunnel Identifier and IP of the IP anchor points Address；
    Second user face more new command sending submodule, for when needing to increase user plane anchor point for the PDU sessions that have activated, Second user face more new command is sent to the IP anchor points, is included in the second user face more new command：The user plane The Tunnel Identifier and IP address of anchor point；
    The first user plane more new command is used for, the tunnel established between the RAN and the user plane anchor point and foundation Tunnel between the user plane anchor point and the IP anchor points；
    The second user face more new command is used for, and the tunnel between the IP anchor points and the RAN is updated into the IP anchors Tunnel between point and the user plane anchor point.
  26. 26. device according to claim 23, it is characterised in that the second routing update indicating module is specifically used for： When needing to increase user plane anchor point for the PDU sessions activated, the 3rd user plane more new command is sent to the RAN, in institute Stating the 3rd user plane more new command includes：The Tunnel Identifier and IP address of the user plane anchor point；
    The 3rd user plane more new command is used for, by the tunnel between the IP anchor points and the RAN be updated to the RAN with Tunnel between the user plane anchor point.
  27. 27. device according to claim 23, it is characterised in that the first path update instruction module includes：
    Fourth user face more new command sending submodule, for when needing to delete user plane anchor point for the PDU sessions that have activated, Fourth user face more new command is sent to the user plane anchor point；
    5th user plane more new command sending submodule, for when needing to delete user plane anchor point for the PDU sessions that have activated, The 5th user plane more new command is sent to the IP anchor points, is included in the 5th user plane more new command：The tunnel of the RAN Road identifies and IP address；
    The fourth user face more new command is used for, and indicates that the user plane anchor point deletes the information related to the PDU sessions；
    The 5th user plane more new command is used for, and the tunnel between the IP anchor points and the user plane anchor point is updated into institute State the tunnel between IP anchor points and the RAN.
  28. 28. device according to claim 23, it is characterised in that the second routing update indicating module is specifically used for： When needing to delete user plane anchor point for the PDU sessions activated, the 6th user plane more new command is sent to the RAN, in institute Stating the 6th user plane more new command includes：The Tunnel Identifier and IP address of the IP anchor points；
    6th user plane more new command is described for the tunnel between the RAN and the user plane anchor point to be updated to Tunnel between RAN and the IP anchor points.
  29. 29. device according to claim 23, it is characterised in that second indicating module includes：
    Receiving submodule, update response message for receiving the user plane that the RAN is sent；
    Sending submodule, for updating response message according to the user plane, solution message on hold is sent to the IP anchor points；
    When needing to increase user plane anchor point for the PDU sessions activated, the solution message on hold is used to trigger the IP anchor points Downlink data packet is sent by the tunnel between the RAN and the user plane anchor point；
    When needing to delete user plane anchor point for the PDU sessions activated, the solution message on hold is used to trigger the IP anchor points Downlink data packet is sent by the tunnel between the RAN and the IP anchor points.
  30. A kind of 30. data transmission device, it is characterised in that including：
    Cache module, for when need for activated protocol Data Unit PDU sessions increase or delete user plane anchor point when, root Upstream data bag is cached according to the instruction of core network control surface functional entity；
    Routing update module, for carrying out user plane path renewal according to the instruction of the core network control surface functional entity；
    Packet sending module, for sending upstream data bag by the user plane path after renewal.
  31. 31. device according to claim 30, it is characterised in that the cache module includes：
    Receiving submodule, for receiving the message on hold of the core network control surface functional entity；
    Cache sub-module, for the upstream data bag received according to message on hold caching.
  32. 32. device according to claim 30, it is characterised in that the routing update module includes：
    First command reception submodule, for when needing to increase user plane anchor point for the PDU sessions activated, receiving the core 3rd user plane more new command of heart network control surface functional entity, includes in the 3rd user plane more new command：The use The Tunnel Identifier and IP address of family face anchor point；
    First path updates submodule, for according to the 3rd user plane more new command, by the tunnel between the IP anchor points Road is updated to the tunnel between the user plane anchor point.
  33. 33. device according to claim 30, it is characterised in that the routing update module includes：
    Second command reception submodule, for when needing to delete user plane anchor point for the PDU sessions activated, receiving the core 6th user plane more new command of heart network control surface functional entity, includes in the 6th user plane more new command：The PDU The Tunnel Identifier and IP address of IP anchor points corresponding to session；
    Second routing update submodule, will be between the user plane anchor point for according to the 6th user plane more new command Tunnel be updated to tunnel between the IP anchor points.
  34. 34. according to any described devices of claim 30-33, it is characterised in that the packet sending module is specifically used for： When needing to increase user plane anchor point for the PDU sessions activated, sent by the tunnel between the user plane anchor point Row packet；When needing to delete user plane anchor point for the PDU sessions activated, sent by the tunnel between IP anchor points Row packet.
  35. 35. according to any described devices of claim 30-33, it is characterised in that described device also includes：
    Message transmission module, for sending user plane renewal response message, the use to the core network control surface functional entity Family face renewal response message is used to trigger IP anchor points transmission corresponding to the core network control surface functional entity to the PDU sessions Solve message on hold.
  36. A kind of 36. data transmission device, it is characterised in that including：
    Cache module, for when need for activated protocol Data Unit PDU sessions increase or delete user plane anchor point when, root Downlink data packet is cached according to the instruction of core network control surface functional entity；
    Routing update module, for carrying out user plane path renewal according to the instruction of the core network control surface functional entity；
    Packet sending module, for sending downlink data packet by the user plane path after renewal.
  37. 37. device according to claim 36, it is characterised in that the cache module includes：
    Receiving submodule, for receiving the message on hold of the core network control surface functional entity；
    Cache sub-module, for the downlink data packet received according to message on hold caching.
  38. 38. device according to claim 36, it is characterised in that the routing update module includes：
    First command reception submodule, for when needing to increase user plane anchor point for the PDU sessions activated, receiving the core The second user face more new command of heart network control surface functional entity, include in the second user face more new command：The use The Tunnel Identifier and IP address of family face anchor point；
    First path updates submodule, for according to the second user face more new command, the tunnel between RAN to be updated to With the tunnel between the user plane anchor point.
  39. 39. device according to claim 36, it is characterised in that the routing update module includes：
    Second command reception submodule, for when needing to delete user plane anchor point for the PDU sessions activated, receiving the core 5th user plane more new command of heart network control surface functional entity, includes in the 5th user plane more new command：RAN tunnel Road identifies and IP address；
    Second routing update submodule, will be between the user plane anchor point for according to the 5th user plane more new command Tunnel be updated to tunnel between the RAN.
  40. 40. according to any described devices of claim 36-39, it is characterised in that the packet sending module includes：
    Receiving submodule, for receiving the solution message on hold of the core network control surface functional entity；
    Packet sending submodule, for when needing to increase user plane anchor point for the PDU sessions activated, being hung according to the solution Play message and downlink data packet is sent by the tunnel between RAN and the user plane anchor point；When needing for the PDU sessions that have activated When deleting user plane anchor point, downlink data packet is sent by the tunnel between the RAN according to the solution message on hold.
  41. A kind of 41. data transmission device, it is characterised in that including：
    Routing update module, need the protocol Data Unit PDU sessions increase to have activated or deletion user plane anchor point for working as When, user plane path renewal is carried out according to the instruction of core network control surface functional entity.
  42. 42. device according to claim 41, it is characterised in that the routing update module includes：
    First command reception submodule, for when needing to increase user plane anchor point for the PDU sessions activated, receiving the core The first user plane more new command of heart network control surface functional entity, include in the first user plane more new command：The use The Tunnel Identifier and IP address of family face anchor point, RAN Tunnel Identifier and IP address, the Tunnel Identifier and IP address of IP anchor points；
    First path updates submodule, for the tunnel according to the first user plane more new command, established between the RAN And the tunnel established between the IP anchor points.
  43. 43. device according to claim 41, it is characterised in that the routing update module includes：
    Second command reception submodule, for when needing to delete user plane anchor point for the PDU sessions activated, receiving the core The fourth user face more new command of heart network control surface functional entity；
    Second routing update submodule is related to the PDU sessions for being deleted according to the fourth user face more new command Information.
  44. 44. according to any described devices of claim 41-43, it is characterised in that described device also includes：
    Packet sending module, for when needing to increase user plane anchor point for the PDU sessions that have activated, by between RAN Tunnel transmission up-downgoing packet.
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