CN102223669B - It creates data inverse-transmitting channel and distributes the method and system of Internet protocol - Google Patents
It creates data inverse-transmitting channel and distributes the method and system of Internet protocol Download PDFInfo
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- CN102223669B CN102223669B CN201110174678.8A CN201110174678A CN102223669B CN 102223669 B CN102223669 B CN 102223669B CN 201110174678 A CN201110174678 A CN 201110174678A CN 102223669 B CN102223669 B CN 102223669B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
- H04W36/023—Buffering or recovering information during reselection
- H04W36/0235—Buffering or recovering information during reselection by transmitting sequence numbers, e.g. SN status transfer
Abstract
The present invention provides a kind of method and system for creating data inverse-transmitting channel and distributing IP, in the above method, in S1 handoff procedures are performed, target BS receives the handover request message for coming from core net, wherein, core net by whether be directapath anti-pass first flag carry in handover request message；Target BS creates data inverse-transmitting channel according to first flag and distributes IP.According to technical solution provided by the invention, it is ensured that S1 switchings are normally carried out according to anti-pass, data packetloss and service disconnection situation when avoiding the occurrence of switching.
Description
Technical field
The present invention relates to long term evolution (Long-Term Evolution, referred to as LTE) wireless communication field, it is specific and
Speech, the method and system for creating data inverse-transmitting channel and distributing IP being related in a kind of LTE wireless communication fields.
Background technology
Mobile management is an important attribute of mobile communication system, and it is exactly in the key of mobile management to switch
Hold, rational handover operation can reduce the possibility of user terminal (User Equipment, referred to as UE) call drop, reduce industry
Business data outage improves system stability and user's impression.
In long term evolution (LTE) system, the state of user terminal (UE) is divided into connected state (RRC_CONNECTED) and sky
Not busy two kinds of state (RRC_IDLE).When the UE under RRC_CONNECTED states is moved to another cell from serving cell
When, handover (handover) will be triggered, to ensure not interrupting for business.
When the cell of UE from a base station (eNB) is switched to the cell of another eNB, cutting across base station will be triggered
It changes.If it is connected between handover source base station and handover-target base station there are X2 interface (X2 Interface) and with same MME
When, according to the prior art (3GPP agreements, 23.401), source eNB will initiate the switching (X2 by X2 interface
InterfaceHandover), otherwise the switching (S1 Interface Handover) for passing through S1 interfaces will be initiated.
In order to reduce the interruption of business datum in S1 handoff procedures, 3GPP introduces data inverse-transmitting technology (data
Forwarding), i.e. source eNB will also have not enough time to be handed down to also failing to of being sent out on the downlink data and UE of UE when switching and performing
The AM pattern upstream data anti-pass of core net is sequentially delivered to be transmitted to by signaling to target eNB, and by PDCP sequence number informations
Target eNB delivers the uplink and downlink data packet that anti-pass comes by target eNB.Source eNB is established each according to switching UE
The service attribute of business decides whether the business datum is carried out data inverse-transmitting and to bring the information to core by signaling
Heart net and target eNB.
If there are X2 couplings between source eNB and target eNB, directapath anti-pass is carried out, i.e. source eNB is directly by anti-pass
Data are sent to target eNB, otherwise carry out indirect paths anti-pass, i.e. anti-pass data are sent to core net, then by core by source eNB
Heart net gives anti-pass data forwarding to target eNB.Anti-pass path is determined by source eNB, and the directapath passed through during S1 messages enable is anti-
It passes mark and brings core net, core net decides whether to implement indirect paths anti-pass according to directapath anti-pass mark.
In order to receive anti-pass data, target eNB needs each business (ERAB) of data inverse-transmitting to be needed to distribute for incision UE
Anti-pass path IP, and IP is transmitted to core net by the order of S1 messages.If carrying out directapath anti-pass, core net is by target eNB
IP be transmitted directly to source eNB, anti-pass data are directly sent to target eNB by source eNB；If carrying out indirect paths anti-pass,
Core net preserves the IP of target eNB, and the traffic assignments anti-pass IP for needing anti-pass is given in core-network side, which is sent to source
Anti-pass data are sent to core net by eNB, source eNB, and core net gives anti-pass data forwarding to target eNB.
Virtual LAN (Virtual Local Area Network, referred to as VLAN) technology refers in transmission network
In, a transmission network physically is divided into multiple virtual LAN, is isolated between each virtual LAN, it is impossible to phase
Mutually access.So as to avoid the broadcast storm occurred in network, while play the data safety between each virtual LAN and guarantor
Close effect.
ENodeB judges that the message belongs to that after the data message with VLAN tag is received according to VLAN ID
Sub-interface.When message is sent network element, after routing inquiry, determines the interface number of network element, the sub-interface can be encapsulated at this time
Corresponding VLAN ID.It is different according to the VLAN ID of label by labelling to transmitting-receiving message, the differentiation of message is carried out, is reached
To the purpose that a variety of messages are received and dispatched by a real interface.
There are S1/MP/X2 connections by LTE eNodeB.In view of packet switched core network (Packet Switched Core,
Referred to as PS Core) and PS Core (abbreviation EPC) and operation maintenance center (Operation Management Center, referred to as
For OMC) network is disposed and is in most cases all deployed in a computer room, therefore consider that S1/MP individually divides a VLAN, it is right
X2 mouthfuls individually divide another VLAN so that the message to communicate between the base station of same L2 transmission networks do not use L3 into
Row routing forwarding.
In the case where S1 mouthfuls and X2 mouthfuls are divided into different VLAN, cannot mutually be accessed between the S1 mouths of eNB and X2 mouthfuls, phase
When in two virtual different networks.Therefore, if IP is assigned at X2 mouthfuls by eNB and that channel etc. is established on X2 mouthfuls is to be received
Data, and data are passed to eNB from S1 interfaces, then eNB will not received.
However, being not directed to how target eNB learns that switching according to the path of anti-pass is direct anti-pass in the relevant technologies
Or indirect anti-pass, therefore target eNB can not determine to establish data inverse-transmitting channel by S1 mouthfuls or X2 mouthfuls, can not also determine
The IP of anti-pass channel is the IP in the VLAN for the distribute S1 mouthfuls or IP in X2 mouthfuls of VLAN.This will lead to S1 switching evidences
Anti-pass can not be normally carried out, data packetloss and service disconnection when causing switching.
Invention content
It can not be normally carried out according to anti-pass for S1 switchings in the relevant technologies, data packetloss and business when causing switching
The problem of interruption, the present invention provides a kind of method and system for creating data inverse-transmitting channel and distributing IP, to solve above-mentioned ask
At least one topic.
A kind of according to an aspect of the invention, there is provided method for creating data inverse-transmitting channel and distributing IP.
IP distribution methods according to the present invention include：In S1 handoff procedures are performed, target BS reception comes from core
The handover request message of net, wherein, the core net by whether be directapath anti-pass first flag carry in the switching
In request message；Target BS creates data inverse-transmitting channel according to first flag and distributes IP.
Before the reception of above-mentioned target BS comes from the handover request message of core net, further include：Source base station determines to hold
After row S1 switchings, the core net reception comes from the handoff requirement message of the source base station, wherein, the handoff requirement message
Carry whether be directapath anti-pass second identifier；The core net takes the first flag according to the second identifier
Band is sent in the handover request message.
The first flag according to the second identifier is carried and is sent in the handover request message by above-mentioned core net
Including：If the MME in the core net does not need to change, which disappears according to the second identifier in the handover request
Increase the first flag in breath, and the target base is sent to by the handover request message after the first flag is increased
It stands；If the MME in the core net needs to change, source MME is according to the second identifier in forward handover request message
Whether be the third mark of directapath anti-pass, and will increase the forward handover request message after the third identifies if increasing
Be sent to target MME, the target MME increases by first mark according to third mark in the handover request message
Know, and the target BS is sent to by the handover request message after the first flag is increased.
The first flag is increased in above-mentioned handover request message by one below mode or is switched in the forward
Increase the third mark in request message：Increase the cell for carrying the first flag or third mark；Using current
Reserved field in cell identifies to carry the first flag or third.
Above-mentioned target BS creates data inverse-transmitting channel and distribute IP according to the first flag to be included：If described first
Mark instruction is directapath anti-pass, then establishes data inverse-transmitting channel by X2 mouthfuls, and is X2 mouthfuls of VLAN's of anti-pass data distribution
IP；If the first flag instruction is not directapath anti-pass, data inverse-transmitting channel is established by S1 mouthfuls, and be anti-pass number
According to the IP of S1 mouthfuls of VLAN of distribution.
Above-mentioned target BS is further included according to the mark establishment data inverse-transmitting channel and after distributing IP：The target
Base station sends switching request acknowledgement message to the core net, wherein, described point is carried in the switching request acknowledgement message
The IP matched.
According to another aspect of the present invention, a kind of system for creating data inverse-transmitting channel and distributing IP is provided.
IP distribution systems according to the present invention include：Core net, including：Expansion module, in handover request message
Carry whether be directapath anti-pass first flag；Target BS；Target BS includes：First receiving module, for holding
In row S1 handoff procedures, receive and come from the handover request message of core net, wherein, carried in handover request message whether be
The first flag of directapath anti-pass；Processing module, for creating data inverse-transmitting channel according to first flag and distributing IP.
Above system further includes：Source base station, including：Judging module, for deciding whether to need to perform S1 switchings；First hair
Module is sent, for sending handoff requirement message, wherein, whether it is the of directapath anti-pass that the handoff requirement message carries
Two marks；Then the core net includes：Second receiving module, for after source base station determines to perform S1 switchings, reception to come from
The handoff requirement message of the source base station；Second sending module, for according to the second identifier by the first flag
Carrying is sent in the handover request message.
Above-mentioned processing module includes；Judging unit, for judging whether the first flag indicates directapath anti-pass；Place
Unit is managed, for when judging unit output is to be, data inverse-transmitting channel to be established, and distribute for anti-pass data by X2 mouthfuls
The IP of X2 mouthfuls of VLAN；When judging unit output is no, data inverse-transmitting channel is established by S1 mouthfuls, and be anti-pass data point
IP with S1 mouthfuls of VLAN.
Above-mentioned target BS further includes；Third sending module, for sending switching request acknowledgement message to the core net,
Wherein, the IP of the distribution is carried in the switching request acknowledgement message.
By the present invention, whether core net will be that the mark of directapath anti-pass is carried and is sent in handover request message
Target BS, target BS create data inverse-transmitting channel according to the mark and distribute IP.When solving S1 switchings in the relevant technologies
The problem of data inverse-transmitting can not be normally carried out, data packetloss and service disconnection when causing switching, and then can ensure that S1 switches
When data inverse-transmitting be normally carried out, data packetloss and service disconnection situation when avoiding the occurrence of switching.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the method for creating data inverse-transmitting channel and distributing IP according to embodiments of the present invention；
Fig. 2 is the flow chart according to the method for creating data inverse-transmitting channel and distributing IP of the preferred embodiment of the present invention one；
Fig. 3 is S1 occurs and switches UE, switching source eNB, target eNB, MME and S- according to the preferred embodiment of the present invention one
The interface relationship figure of GW；
Fig. 4 is the flow chart according to the method for creating data inverse-transmitting channel and distributing IP of the preferred embodiment of the present invention two；
Fig. 5 is UE, the switching source for switching (S-GW does not change) across the S1 of MME according to the generation of the preferred embodiment of the present invention two
ENB, target eNB, the interface relationship figure for switching source MME, target MME and S-GW；
Fig. 6 is the structure diagram of the system for creating data inverse-transmitting channel and distributing IP according to embodiments of the present invention；
Fig. 7 is establishment data inverse-transmitting channel according to the preferred embodiment of the invention and the structure diagram for the system for distributing IP.
Specific embodiment
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be combined with each other.
Fig. 1 is the flow chart of the method for creating data inverse-transmitting channel and distributing IP according to embodiments of the present invention.Such as Fig. 1 institutes
Show, the method for the establishment data inverse-transmitting channel and distribution IP mainly include following processing：
Step S102：In S1 handoff procedures are performed, target BS receives the handover request message for coming from core net,
In, core net by whether be directapath anti-pass first flag carry in handover request message；
Step S104：Target BS creates data inverse-transmitting channel according to first flag and distributes IP.
It is not directed to how target eNB learns that switching according to the path of anti-pass is direct anti-pass also right and wrong in the relevant technologies
Direct anti-pass, therefore target eNB can not determine to establish data inverse-transmitting channel by S1 mouthfuls or X2 mouthfuls, can not also determine that anti-pass is led to
The IP in road is the IP in the VLAN for the distribute S1 mouthfuls or IP in X2 mouthfuls of VLAN.This will cause S1 switchings according to anti-pass without
Method is normally carried out, data packetloss and service disconnection when causing switching.In method shown in FIG. 1, whether core net will be direct
The mark carrying of path anti-pass is sent to target BS in handover request message, and target BS is anti-according to mark establishment data
It passes channel and distributes IP.It solves above-mentioned technical problem, and then can ensure that S1 switchings are normally carried out according to anti-pass, avoid out
Data packetloss and service disconnection situation when now switching.
Preferably, before step S102 is performed, following processing can also be included：
(1) source base station determines after performing S1 switchings that core net receives the handoff requirement message for coming from source base station, wherein,
Handoff requirement message carry whether be directapath anti-pass second identifier；
(2) first flag according to second identifier is carried and is sent in handover request message by core net.
In a preferred implementation process, source base station (source eNB) judgement needs to carry out S1 switchings, is sent by S1 mouthfuls to core net
Switching demand (Handover Required) message, the handoff requirement message include but not limited to the switching of mobility triggering.
Include but not limited to RRC contexts, UE abilities and the directapath anti-pass mark of UE in Handover Required message
(Direct Forwarding Path Availability)。
Preferably, above-mentioned core net according to second identifier by first flag carry in handover request message send include with
Lower processing：
If the MME in core net does not need to change, which increases by according to second identifier in handover request message
One mark, and the handover request message after increase first flag is sent to target BS；
If the MME in core net needs to change, source MME increases according to second identifier in forward handover request message
Whether it is the third mark of directapath anti-pass, and target is sent to by the forward handover request message after third identifies is increased
MME, target MME increase first flag according to third mark in handover request message, and will increase the switching after first flag
Request message is sent to target BS.
Preferably, can above-mentioned first flag be increased in handover request message by one below mode or is cut in forward
Changing in request message increases above-mentioned third mark：
(1) increase the cell of carrying first flag or third mark；
(2) it is identified using the reserved field in current cell to carry first flag or third.
In a preferred implementation process, core net can be according to the letter in handover request (Handover Required) message
Member fills in Handover Request message, specifically can be in two kinds of situation：(1) if MME does not need to change, MME according to
Whether in Handover Required message is that the mark of directapath anti-pass is filled in Handover Request message
Whether be directapath anti-pass mark, Handover Request message is sent to target eNB by S1 mouthfuls.(2) if
MME needs to change, and whether source MME in Handover Required message is that the mark of directapath anti-pass is filled in
In Forward Relocation Request message whether be directapath anti-pass mark, by Forward
RelocationRequest message is sent to target MME by S10 mouthfuls, and target MME is according to Forward Relocation
Whether it is directapath anti-pass that the directapath anti-pass mark in Request message is filled in Handover Request message
Mark, Handover Request message is sent to target eNB by S1 mouthfuls.
Wherein it is possible to increase in Handover Request message or Forward Relocation Request message
Directapath anti-pass identify cell or using the reserved field in existing cell (i.e. above-mentioned current cell) come carry whether
It is the mark of directapath anti-pass.
Preferably, above-mentioned steps S104 may further include：
(1) if first flag instruction is directapath anti-pass, data inverse-transmitting channel is established by X2 mouthfuls, and be anti-pass
Data distribute the IP of X2 mouthfuls of VLAN；
(2) if first flag instruction is not directapath anti-pass, data inverse-transmitting channel is established by S1 mouthfuls, and be anti-
Pass the IP that data distribute S1 mouthfuls of VLAN.
Preferably, create data inverse-transmitting channel and after distributing IP according to mark in target BS, target BS need to
Core net sends switching response message, wherein, the IP of distribution is carried in switching response message.
In a preferred implementation process, target eNB is that the UE that will be cut distributes money according to Handover Request message
Source prepares wireless resource information, waits for UE access.Whether target eNB in Handover Request message is direct
Whether anti-pass is identified as uplink and downlink anti-pass data creation transmission channel to the mark and business of path anti-pass, IP is distributed, if above-mentioned
Mark is designated as directapath anti-pass, then the IP of X2 mouthfuls of VLAN is distributed for anti-pass data, otherwise distributes S1 mouthfuls for anti-pass data
Then the IP of VLAN sets up Handover Request Acknowledge (Handover RequestAcknowledge) message and is sent to core net,
In, anti-pass channel destination IP and target eNB which includes the business for needing anti-pass pass through core net
The reallocation message (i.e. switching command) comprising mobility information of UE is transmitted to source eNB.
Later, core net sets up switching command according to Handover Request Acknowledge message
(HandoverCommand) message, if directapath anti-pass, business anti-pass purpose that core net sends target eNB
IP is inserted in Handover Command message, if indirect paths anti-pass, core net preserves the purpose that target eNB is transmitted
IP, and the service creation uplink and downlink data inverse-transmitting channel to needing anti-pass are anti-pass channel allocation destination IP, the IP of distribution are filled out
Enter Handover Command message, be then sent to source eNB by S1 mouthfuls.
Source eNB receives Handover Command message, and decoding obtains switching command therein, is sent to UE, and will
The uplink and downlink anti-pass data of each business are sent on the corresponding IP carried in Handover Command message, if it is direct road
Diameter anti-pass, anti-pass data have been sent directly to target eNB by X2 mouthfuls；If it is indirect paths anti-pass, anti-pass data pass through
S1 mouthfuls are sent to core net, then are sent to target eNB by S1 mouthfuls by core net.
UE access sends to re-match to target eNB and completes message, target eNB is sent to core net to target eNB
The switching of HandoverNotify message informings core net is completed, and core net sends context release command to source eNB, starts to mesh
Mark eNB sends downlink data and starts to receive upstream data, and uplink anti-pass data are issued core net by target eNB, and downlink is anti-
It passes data and issues UE, and start normal processing uplink and downlink data, switching is completed.
By above-mentioned processing, by the S1 for the switching in target eNB mouths and the X2 mouthfuls of feelings for being divided into different VLAN of S1 interfaces
Target eNB can correctly create anti-pass channel under condition, distribute anti-pass IP, anti-pass data is enable to normally receive.
S1 switching flow figures when MME in core net does not need to change are described below in conjunction with Fig. 2 and Fig. 3.
Fig. 2 is the flow chart according to the IP distribution methods of the preferred embodiment of the present invention one.Wherein, it is carried out under same MME
There are S1 mouthfuls as shown in figure 3, two eNB are between same MME for the annexation figure of UE, eNB, MME, S-GW of S1 switchings
It is coupled, without X2 mouthfuls between two eNB, two eNB are connected with same S-GW, with UE before switching and eNB1 there are UU mouthfuls, that is, eat dishes without rice or wine, switch
The UU mouths of UE and eNB1 are disconnected afterwards, and UU mouthfuls are set up with eNB2.It should be noted that the MME of core net and S-GW are drawn in Fig. 2
In same block diagram.As shown in Fig. 2, the IP distribution methods mainly include following processing：
Step S202：Due to sending out measurement report or load balancing etc. on UE, trigger source eNB judgements connect in RRC
Connect state UE stood between switch, and due to no X2 mouthfuls available, judgement needs to carry out S1 switchings, data inverse-transmitting type
For indirect paths anti-pass, all business of UE are AM patterns, need to carry out downlink anti-pass.
Step S204：Source eNB sets up switching demand (Handover Required) message and is sent to MME by S1 mouthfuls,
Include but not limited to RRC contexts, UE abilities and the directapath anti-pass mark of UE in Handover Required message
(whether directapath anti-pass be identified as FALSE).
Step S206：Cells of the MME of core net in Handover Required message fills in handover request
(Handover Request) message, in the message including but not limited to the RRC contexts of UE, UE abilities, target eNB is needed to build
Vertical service lists.
Step S208：MME in Handover Required message whether be directapath anti-pass mark, will
In Handover Request message whether be directapath anti-pass mark cell or agreement as defined in as directapath
The reserved field of anti-pass mark is set to FALSE,
Step S210：Handover Request message is sent to target eNB by S1 mouthfuls.
Step S212：Target eNB is that the UE that will be cut distributes resource according to Handover Request message, prepares nothing
Line resource information waits for UE access.
Step S214：Target eNB in Handover Request message whether be directapath anti-pass mark
For FALSE, anti-pass path is judged for indirect paths anti-pass, and the IP of S1 mouthfuls of VLAN is distributed for anti-pass data；
Step S216：Target eNB sets up Handover Request Acknowledge (Handover Request Acknowledge) message hair
MME is given, wherein the uplink and downlink anti-pass data channel destination IP and target eNB including but not limited to the business for needing anti-pass are led to
It crosses core net and source eNB is transmitted to the reallocation message (i.e. switching command) comprising mobility information of UE.
Step S218：MME sets up Handover Command according to Handover Request Acknowledge message
Message.Due to being indirect paths anti-pass, MME notice S-GW, will to all service creation uplink and downlink anti-pass channels of switching UE
The destination IP of target eNB distribution brings S-GW.W-GS is anti-pass channel allocation destination IP and issues MME, and MME distributes S-GW
Destination IP inserts Handover Command message, is then sent to source eNB by S1 mouthfuls.
Step S220：Source eNB receives Handover Command message, and decoding obtains switching command therein, is sent to
UE；The uplink and downlink anti-pass data of each business are sent to the destination IP of S-GW distribution carried in Handover Command message
On, S-GW that anti-pass data are sent to core net by S1 mouthfuls, then the purpose for being sent to target eNB distribution by S1 mouthfuls by S-GW
On IP, target eNB receives uplink and downlink anti-pass data.
Step S222：UE access sends to re-match to target eNB and completes message to target eNB；
Step S224：Target eNB sends Handover Notify message informings MME switchings to MME and completes；
Step S226：MME sends context release command to source eNB, and notifies S-GW toggle paths, and S-GW stops to source
ENB sends downlink data, starts to send downlink data to target eNB and receives the upstream data of target eNB, target eNB will be upper
Row anti-pass data are sequentially delivered to core net, and downlink anti-pass data are issued UE, and start normal processing uplink and downlink data, switching
It completes.
S1 switching flow figures when MME in core net does not need to change are described below in conjunction with Fig. 4 and Fig. 5.
Fig. 4 is the flow chart according to the method for creating data inverse-transmitting channel and distributing IP of the preferred embodiment of the present invention two.
Wherein, the annexation figure of UE, eNB, MME, S-GW of S1 switchings are carried out under different MME as shown in figure 5, between eNB1 and MME1
There are S1 couplings, and there are S1 couplings, eNB1, eNB2, MME1, MME2 between eNB2 and MME2 to be connected with same S-GW, and two
There are X2 mouthfuls of couplings between a eNB, and before switching UE and eNB1 eats dishes without rice or wine there are UU mouthfuls, and the UU mouths of UE and eNB1 are disconnected after switching, with
ENB2 sets up UU mouthfuls.As shown in figure 5, the IP distribution methods mainly include following processing：
Step S402：Due to sending out measurement report or load balancing etc. on UE, trigger source eNB judgements connect in RRC
Connect state UE stood between switch.Since source eNB is connected from target eNB with different MME, eNB judgements in source need to carry out
S1 switches.Due to there is X2 mouthfuls between source eNB and target eNB, eNB judgement data inverse-transmitting types in source are directapath anti-pass.Switching
All business of UE are AM patterns, and need to carry out downlink anti-pass；
Step S404：Source eNB sets up Handover Required message and is sent to source MME by S1 mouthfuls,
Include but not limited to the RRC contexts of UE, UE abilities in HandoverRequired message and whether be directapath anti-pass
Mark (for example, directapath anti-pass mark be TRUE)；
Step S406：Cells of the source MME in Handover Required message fills in Forward
RelocationRequest；
Step S408：Whether source MME in Handover Required message is being identified as directapath anti-pass
Whether TRUE, it is that directapath anti-pass is identified as TRUE to fill in Forward Relocation Request message；
Step S410：Source MME selection target MME, and will fill in whether be directapath anti-pass mark
ForwardRelocation Request message is sent to target MME；
Step S412：Target MME receives Forward Relocation Request, and the cell in the message is filled in
Handover Request message, wherein, in the message including but not limited to the RRC contexts of UE, UE abilities, need target
The service lists that eNB is established；
Step S414：Target MME in Handover Required message whether be directapath anti-pass mark
Know, fill in Handover Request message whether be directapath anti-pass mark cell or agreement as defined in as straight
The reserved field for connecing path anti-pass mark is TRUE, and Handover Request message is sent to target eNB by S1 mouthfuls；
Step S416：Target eNB is that the UE that will be cut distributes resource according to Handover Request message, prepares nothing
Line resource information waits for UE access.
Step S418：Target eNB in Handover Request message whether be directapath anti-pass mark
For TRUE, anti-pass path is judged for directapath anti-pass, and the IP of X2 mouthfuls of VLAN is distributed for anti-pass data；
Step S420：Target eNB sets up Handover Request Acknowledge message and is sent to MME, wherein,
Handover Request Acknowledge message is led to including but not limited to the uplink and downlink anti-pass data for the business for needing anti-pass
The reallocation message comprising mobility information that road destination IP and target eNB are transmitted to UE by core net and source eNB (switches
Order).
Step S422：Target MME is set up according to Handover Request Acknowledge message
ForwardRelocation Response message, is sent to source MME.
Due to being directapath anti-pass, the anti-pass path IP that target eNB is distributed directly is filled up to by target MME
In ForwardRelocation Response message.
Step S424：Source MME sets up Handover Command according to Forward Relocation Response message
Message, and the anti-pass destination IP in Forward Relocation Response message is inserted into Handover Command and is disappeared
Breath, is then sent to source eNB by S1 mouthfuls.
Step S426：Source eNB receives Handover Command message, and decoding obtains switching command therein, is sent to
UE, and the uplink and downlink anti-pass data of each business are sent to the anti-pass destination IP carried in Handover Command message, i.e.,
In the anti-pass destination IP of target eNB distribution, target eNB receives uplink and downlink anti-pass data.
Step S428：UE access sends to re-match to target eNB and completes message to target eNB；
Step S430：Target eNB sends the switching of Handover Notify message informings to target MME and completes.
Step S432：Target MME sends business modification request (Modify Bearer Request) message to S-GW；
Step S434：Target MME sends Forward Relocation Complete Notification to source MME and disappears
Breath；
Step S436：Source MME sends context release command, the local UE resources of source eNB releases to source eNB.S-GW is cut
Path is changed to target eNB, stops sending downlink data, start to process mesh to source eNB after End Marker packets are sent to source eNB
Mark the uplink and downlink data on eNB.End Marker packets anti-pass is given target eNB, target eNB to receive End Marker packets by source eNB
Uplink anti-pass data are sequentially delivered to core net afterwards, downlink anti-pass data are issued into UE, and start normal processing line number up and down
According to switching is completed.
Fig. 6 is the structure diagram of the system for creating data inverse-transmitting channel and distributing IP according to embodiments of the present invention.Such as Fig. 6
Shown, which mainly includes：Core net 10 and target BS 20；The core net 10 includes：Expansion module 100,
For by whether be directapath anti-pass first flag carry in the handover request message；Target BS 20 can be into one
Step includes：First receiving module 200, in S1 handoff procedures are performed, receiving the handover request message for coming from core net,
Wherein, carried in handover request message whether be directapath anti-pass first flag；Processing module 202, for according to
One mark creates data inverse-transmitting channel and distributes IP.
Preferably, as shown in fig. 7, above system can also include；It further includes：Source base station 30；Wherein, source base station 30 wraps
It includes：Judging module 300, for deciding whether to need to perform S1 switchings；First sending module 302 disappears for sending switching demand
Breath, wherein, handoff requirement message carry whether be directapath anti-pass second identifier；Core net 10 further includes：Second connects
Module 102 is received, for after source base station determines to perform S1 switchings, receiving the handoff requirement message for coming from source base station；Second hair
Module 104 is sent, for sending first flag carrying in handover request message according to second identifier.
Preferably, as shown in fig. 7, processing module 202 may further include：Judging unit (Fig. 7 is not shown), for sentencing
Whether disconnected first flag indicates directapath anti-pass；Processing unit (Fig. 7 is not shown), for judging unit output for be when,
Data inverse-transmitting channel is established by X2 mouthfuls, and the IP of X2 mouthfuls of VLAN is distributed for anti-pass data；When judging unit output is no, lead to
It crosses S1 mouthfuls and establishes data inverse-transmitting channel, and the IP of S1 mouthfuls of VLAN is distributed for anti-pass data.
Preferably, as shown in fig. 7, target BS 20 further includes；Third sending module 204, for being cut to core net transmission
Request confirmation message is changed, wherein, the IP of distribution is carried in switching request acknowledgement message.
It should be noted that each module, each unit in above-mentioned target BS, source base station and core net be combined with each other it is excellent
Embodiment is selected specifically to may refer to the description of Fig. 1 to Fig. 5, details are not described herein again.
It can be seen from the above description that the present invention realizes following technique effect：On the basis of existing LTE technologies
On, the target eNB of division VLAN is led to not due to that can not know the anti-pass path of switching when efficiently solving S1 switchings
It is correct to establish anti-pass channel to receive anti-pass data and correctly distribute asking for anti-pass channel IP according to the division of VALN
Topic ensure that the data inverse-transmitting success of S1 switchings, reduce loss of data and the service disconnection of handoff procedure, greatly improve
LTE system performance and user's impression.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Computing device realize that they can concentrate on single computing device or be distributed in multiple computing devices and be formed
Network on, optionally, they can be realized with the program code that computing device can perform, so as to be stored in
They are either fabricated to each integrated circuit modules respectively or will be in them by computing device to perform in storage device
Multiple modules or step be fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hard
Part and software combine.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification for all within the spirits and principles of the present invention, being made,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
- A kind of 1. method for creating data inverse-transmitting channel and distributing Internet protocol IP, which is characterized in that including：In S1 handoff procedures are performed, target BS receives the handover request message for coming from core net, wherein, the core net By whether be directapath anti-pass first flag carry in the handover request message；The target BS creates data inverse-transmitting channel according to the first flag and distributes IP；Wherein, the target BS creates data inverse-transmitting channel and distributes IP and includes according to the first flag：If described One mark instruction is directapath anti-pass, then establishes data inverse-transmitting channel, and distribute X2 mouthfuls of VLAN for anti-pass data by X2 mouthfuls IP；If the first flag instruction is not directapath anti-pass, data inverse-transmitting channel is established by S1 mouthfuls, and be anti-pass Data distribute the IP of S1 mouthfuls of VLAN.
- 2. according to the method described in claim 1, it is characterized in that, come from the switching of core net in target BS reception Before request message, further include：Source base station determines after performing S1 switchings that the core net reception comes from the handoff requirement message of the source base station, wherein, The handoff requirement message carry whether be directapath anti-pass second identifier；The first flag according to the second identifier is carried and is sent in the handover request message by the core net.
- 3. according to the method described in claim 2, it is characterized in that, the core net according to the second identifier by described first Mark, which carries to send in the handover request message, to be included：If the MME in the core net does not need to change, the MME is according to the second identifier in the handover request message It is middle to increase the first flag, and it is sent to the target base by the handover request message after the first flag is increased It stands；If the MME in the core net needs to change, source MME is according to the second identifier in forward handover request message Whether be the third mark of directapath anti-pass, and will increase the forward handover request message after the third identifies if increasing Be sent to target MME, the target MME increases by first mark according to third mark in the handover request message Know, and the target BS is sent to by the handover request message after the first flag is increased.
- 4. according to the method described in claim 3, it is characterized in that, by one below mode in the handover request message Increase the first flag or increase the third mark in the forward handover request message：Increase the cell for carrying the first flag or third mark；The first flag or third mark are carried using the reserved field in current cell.
- 5. method according to any one of claim 1 to 4, which is characterized in that the target BS is according to the mark It creates data inverse-transmitting channel and distributes after IP, further include：The target BS sends Handover Request Acknowledge to the core net Message, wherein, the IP of the distribution is carried in the switching request acknowledgement message.
- 6. a kind of system for creating data inverse-transmitting channel and distributing Internet protocol IP, which is characterized in that including：Core net and mesh Mark base station；The core net includes：Expansion module, for by whether be directapath anti-pass first flag carry in handover request message；The target BS includes：First receiving module, in S1 handoff procedures are performed, the handover request that reception comes from the core net to disappear Breath；Processing module, for creating data inverse-transmitting channel according to the first flag and distributing IP；Wherein, the processing module includes：Judging unit, for judging whether the first flag indicates directapath anti-pass；Processing unit, for when judging unit output is to be, establishing data inverse-transmitting channel by X2 mouthfuls, and be anti-pass number According to the IP of X2 mouthfuls of VLAN of distribution；When judging unit output is no, data inverse-transmitting channel is established by S1 mouthfuls, and be anti-pass Data distribute the IP of S1 mouthfuls of VLAN.
- 7. system according to claim 6, which is characterized in thatIt further includes：Source base station, the source base station include：Judging module, for deciding whether to need to perform S1 switchings；First sending module, for sending handoff requirement message, wherein, whether it is direct road that the handoff requirement message carries The second identifier of diameter anti-pass；Then the core net further includes：Second receiving module, for after source base station determines to perform S1 switchings, receiving the switching for coming from the source base station Requirement message；Second sending module, for being sent out first flag carrying in the handover request message according to the second identifier It send.
- 8. the system according to any one of claim 6 to 7, which is characterized in that the target BS further includes：Third sending module, for sending switching request acknowledgement message to the core net, wherein, the Handover Request Acknowledge disappears The IP of the distribution is carried in breath.
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| CN201110174678.8A CN102223669B (en) | 2011-06-24 | 2011-06-24 | It creates data inverse-transmitting channel and distributes the method and system of Internet protocol |
| PCT/CN2011/079742 WO2012174798A1 (en) | 2011-06-24 | 2011-09-16 | Method and system for establishing data forwarding channel and allocating internet protocol |
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| WO2014032288A1 (en) * | 2012-08-31 | 2014-03-06 | 华为技术有限公司 | Data transmission method, user equipment, and base station in wireless network |
| WO2017024442A1 (en) * | 2015-08-07 | 2017-02-16 | 华为技术有限公司 | Data transmission and network access method and related device and system |
| CN107426776A (en) * | 2016-05-24 | 2017-12-01 | 华为技术有限公司 | QoS control method and equipment |
| EP3958615A1 (en) | 2016-08-10 | 2022-02-23 | NEC Corporation | Radio access network node, radio terminal, core network node, and method therefor |
| CN113676972A (en) * | 2016-08-10 | 2021-11-19 | 日本电气株式会社 | Wireless access network node and method thereof |
| EP3499968B1 (en) | 2016-08-10 | 2022-11-16 | Nec Corporation | Radio access network node, wireless terminal, core network node, and methods for these |
| JP6665937B2 (en) | 2016-08-10 | 2020-03-13 | 日本電気株式会社 | Radio access network node, radio terminal, and methods thereof |
| KR102356205B1 (en) * | 2016-08-12 | 2022-02-08 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Data processing method and relevant device |
| CN112514450B (en) * | 2018-11-29 | 2024-01-05 | Oppo广东移动通信有限公司 | Data processing method, device and storage medium |
| CN111935745B (en) * | 2020-08-12 | 2024-04-12 | 太仓市同维电子有限公司 | Method for realizing terminal cross-base station mobile performance optimization |
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