CN102158915B - Method for keeping selective IP flow shunt connection during switching and device - Google Patents
Method for keeping selective IP flow shunt connection during switching and device Download PDFInfo
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- CN102158915B CN102158915B CN201110039752.5A CN201110039752A CN102158915B CN 102158915 B CN102158915 B CN 102158915B CN 201110039752 A CN201110039752 A CN 201110039752A CN 102158915 B CN102158915 B CN 102158915B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000003213 activating effect Effects 0.000 claims description 16
- 230000004913 activation Effects 0.000 claims description 15
- 238000010187 selection method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
- H04W36/125—Reselecting a serving backbone network switching or routing node involving different types of service backbones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0019—Control or signalling for completing the hand-off for data sessions of end-to-end connection adapted for mobile IP [MIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method for keeping selective IP flow shunt connection during switching. The method comprises the steps of judging whether selective IP flow shunt connection is activated at present, judging whether a core network control node is changed, and sending selective IP flow shunt connection activated information to a new core network control node when the core network control node is changed, and determining a service gateway selection method and selecting a service gateway again. The method can keep the IP connection between a local gateway and the service gateway when the selective IP flow shunt connection is switched, avoids the breakage of the selective IP flow shunt connection and keeps the connection continuity. The invention also provides a device for keeping the selective IP flow shunt connection during switching.
Description
Technical field
The present invention relates to mobile communication wireless access technology field, the method and the device that while particularly relating to a kind of switching, keep selectivity IP flow shunt to connect.
Background technology
Along with the development of wireless access technology, transfer of data is with higher speed transmission, and the raising of the increase of number of users and user data transmission speed has all proposed requirements at the higher level to the network element performance of core network.Wherein, selectivity IP flow shunt (SIPTO, Selected IP Traffic Offload) technology is that a kind of to allow core net be terminal (UE, User Equipment) the nearest gateway of its attachment point of chosen distance, thereby make a part of data flow of terminal directly enter the technology of packet data network (PDN, Packet Data Network) by this gateway.Because selectivity IP flow shunt technology can just be shunted away specific IP operation from the gateway nearest apart from terminal attachment point, can save core net transfer resource, be therefore subject to increasing people's attention.
The existing LTE system architecture of the general employing of the existing selectivity IP flow shunt framework based on macro base station, by the nearest packet data network gateway (P-GW in chosen distance terminal attachment point geographical position, PDN Gateway) as split point, all packet data network that lead to send the data flow that is performed selectivity IP flow shunt strategy by packet data network gateway, and normal core net flow is unaffected.Selectivity IP flow shunt activates in packet data network connection procedure, specifically configure to judge whether to activate selectivity IP flow shunt by core network control node (Mobility Management Entity) (MME, Mobility ManagementEntity) according to subscription data and operator.In addition, in selectivity IP flow shunt framework based on macro base station, macro base station also can pass through local gateway (L-GW, Local Gateway) and carry out selectivity IP flow shunt, and selectivity IP flow enters local family or enterprise network by local gateway.
Along with the development of technology, need selectivity IP flow shunt framework can be applied to equally Home eNodeB (H (e) NB, Home (enhanced) NodeB) in, selectivity IP flow shunt flow enters local family or enterprise network by the direct tunnel between H (e) NB and local gateway.In the time that terminal is set up by the connection of Home eNodeB request packet data network, if network allows to activate selectivity IP flow shunt, for terminal selects the local gateway of Home eNodeB association as its packet data network gateway.
In existing system framework, the general employing of switching that selectivity IP flow shunt connects between macro base station is switched identical method with general packet data network and is carried out, in the handoff procedure that core network control node connects at selectivity IP flow shunt, whether decision is carried out to reselecting of gateway (S-GW, Serving Gateway).Generally, if connecting through gateway and packet data gateway, sets up selectivity IP flow shunt, because gateway and packet data gateway are all arranged in core net, there is IP between the two and connect, even if therefore reselect the continuity that gateway also still can ensure that selectivity IP flow shunt connects.But, if connecting, sets up through local gateway selectivity IP flow shunt, because local gateway is generally positioned at family or enterprise network inside, and between gateway, may not have IP is connected, therefore in this case, carry out selectivity IP flow shunt and connect while switching, if do not have IP to be connected between the new gateway of selecting and local gateway, the interruption that can cause selectivity IP flow shunt to connect, impact is used.
summary of the invention
Technical problem to be solved by this invention is to provide a kind of method and device that keeps selectivity IP flow shunt to connect in the time switching, can be in the time that selectivity IP flow shunt connects switching, keep the IP between local gateway and gateway to be connected, the interruption of avoiding selectivity IP flow shunt to connect, keeps the continuity of its connection.
In order to address the above problem, the invention discloses a kind of method that keeps selectivity IP flow shunt to connect in the time switching, comprise the following steps:
Add and represent that selectivity IP flow shunt connects the activation flag whether activating;
Judge that the current selectivity IP flow shunt that whether activated connects;
Judge whether core network control node changes;
In the time that judgement has activated selectivity IP shunting connection, obtain the gateway that has IP to be connected with local gateway, using the gateway getting as new gateway.
Further, when described method is also included in and activates selectivity IP flow shunt and connect, add and activate flag in core network control node, the current selectivity IP flow shunt that whether activated connects according to activating flag and judges.
Further, described judge whether core network control node changes after, if core network control node change, by selectivity IP flow shunt connect active information send to new core network control node.
Further, describedly represent that selectivity IP flow shunt connects before activating flag and also comprised adding:
Judge whether to activate selectivity IP flow shunt and connect, if so, activate selectivity IP flow shunt and connect, and add and activate flag, otherwise, do not activate selectivity IP flow shunt and connect, do not add activation flag.
Further, described in, judge whether that the method that activates the connection of selectivity IP flow shunt is:
Judge according to CAMEL-Subscription-Information and local configuration information, if all allowing to activate selectivity IP flow shunt, CAMEL-Subscription-Information and local configuration information connect, represent to allow to activate, if at least one of them does not allow to activate selectivity IP flow shunt and is connected for CAMEL-Subscription-Information and local configuration information, represent not allow to activate.
Further, described and local gateway have gateway that IP is connected by obtaining with domain name system or local configuration.
Further, the method that reselects gateway described in is:
Adopt original gateway as new gateway.
In order to address the above problem, the invention also discloses a kind of device that keeps selectivity IP flow shunt to connect in the time switching, comprising:
The first judge module, judges that according to activating flag the current selectivity IP flow shunt that whether activated connects;
The second judge module, judges whether core network control node changes;
Select module, in the time judging that having activated selectivity IP shunting connects, obtain the gateway that has IP to be connected with local gateway, using the gateway getting as new gateway.
Further, described device also comprises flag interpolation module, represents that for adding selectivity IP flow shunt connects the activation flag whether activating.
Further, described device also comprises information sending module, connects active information for sending selectivity IP flow shunt.
Compared with prior art, the present invention has the following advantages:
Method and the device embodiment that keeps selectivity IP flow shunt to connect in the time switching of the present invention, set up for terminal packet data network connect process in, core network control node will determine whether to activate selectivity IP flow shunt according to CAMEL-Subscription-Information and configuration information and be connected, and corresponding activation flag is set in core network control node.Carry out in process in switching, core network control node only need to judge whether the connection of selectivity IP flow shunt activates according to activating flag, to determine the required operation of carrying out in switching follow-up, can avoid again judging in the time switching and increase operating procedure and the time of switching.
In addition, core network control node can also determine whether gateway reselects and How to choose according to activating flag, ensure no matter be not reselect gateway or reselected gateway, determined gateway can keep IP to be connected with local gateway all the time, thereby the continuity that keeps selectivity IP flow shunt to connect, avoids the interruption that causes selectivity IP flow shunt to connect because switch.
Brief description of the drawings
Fig. 1 is the flow chart of the embodiment of the method one that keeps the connection of selectivity IP flow shunt under handoff scenario of the present invention;
Fig. 2 is the flow chart of the embodiment of the method two that keeps the connection of selectivity IP flow shunt under handoff scenario of the present invention;
Fig. 3 is the structure chart of the method application example one that keeps the connection of selectivity IP flow shunt under handoff scenario of the present invention;
Fig. 4 is the structural representation of the device embodiment mono-that keeps the connection of selectivity IP flow shunt in the time switching of the present invention;
Fig. 5 is the structural representation of the device embodiment bis-that keeps the connection of selectivity IP flow shunt in the time switching of the present invention.
Fig. 6 is the structural representation of the device embodiment tri-that keeps the connection of selectivity IP flow shunt in the time switching of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
With reference to Fig. 1, the embodiment of the method one that keeps selectivity IP flow shunt to connect in the time switching of the present invention is shown, comprise the following steps:
Step 101, judges that the current selectivity IP flow shunt that whether activated connects.
In the time that mobile radio station moves (roaming), it can move the overlay area from the overlay area of a base station to another base station, moves to target BS from source base station.In moving process, source base station can propose handover request to source core network control node.
If having activated selectivity IP flow shunt connects, represent that current selective IP flow shunt connects, in switching, need the continuity of considering that selectivity IP flow shunt connects, for example, in the time of follow-up selection gateway, should be noted that with the IP of local gateway and be connected.Otherwise, the current selectivity IP flow shunt connection that do not have is described, can adopt the processing mode of existing switching flow to carry out subsequent operation.
Step 102, judges whether core network control node changes.
Source core network control node can judge whether to reselect the core network control node of core network control node as target BS according to own current load, if, can be using the core network control node of selecting new core network control node as target BS, otherwise still adopting source core network control node is the core network control node of target BS.Before carrying out subsequent operation, first judge whether core network control node changes, if changed, perform step 103, otherwise, directly perform step 104.
Step 103, connects active information by selectivity IP flow shunt and sends to new core network control node.
Source core network control node connects active information by selectivity IP flow shunt and sends to target core network control node.
Step 104, determines the system of selection of gateway and reselects gateway.
If there is change in the core network control node of target BS, reselect gateway by target core network control node, if the core network control node of target BS does not change, reselect gateway by source core network control node.
In the time determining the system of selection of gateway and reselect gateway, need to consider that the current selectivity IP flow shunt that whether activates of terminal connects.
The mode that the core network control node of target BS reselects gateway comprises following two kinds:
First kind of way is: the core network control node of target BS obtains with local gateway has gateway that IP is connected as new gateway.The gateway that has IP to be connected with local gateway is obtained in concrete can use domain name system (DNS, Domain Name System) or local configuration.
The second way is: the core network control node of target BS still adopts original gateway as new gateway.
In the selection mode of aforementioned two kinds of gateways, first kind of way can take more signal resource, but can make load balancing, in addition, new gateway potential range terminal current location is closer, in the time that terminal moves near current location, just do not need to have reselected gateway more so, therefore can reduce gateway change frequency.Rear a kind of mode can be avoided occupied signaling resource.Any mode of concrete employing can be determined by operator, also can in practical operation, can determine according to the actual conditions of resource.
Determining after gateway, then switching subsequent operation.
If the gateway reselecting is the gateway newly obtaining, adopt the gateway that newly obtains to switch follow-up operation, if reselect remain original gateway, adopt original gateway to switch follow-up operation.
With reference to Fig. 2, the embodiment of the method two that keeps selectivity IP flow shunt to connect in the time switching of the present invention is shown, before the step 101 of embodiment mono-, also comprise
Step 201, adds and represents that selectivity IP flow shunt connects the activation flag whether activating.
When set up packet data network connection for terminal, in the core network control node of source, add and represent that selectivity IP flow shunt connects the flag whether activating.In the process of follow-up switching, can directly judge by activating flag whether the connection of selectivity IP flow shunt activates, and avoids re-starting judgement, has simplified the subsequent operation of switching, and has saved switching time.
Wherein, source core network control node is from home subscriber server (HSS, Home SubscriberServer) obtain CAMEL-Subscription-Information, and then obtaining local configuration information, source core network control node can judge whether to activate the connection of selectivity IP flow shunt according to CAMEL-Subscription-Information and local configuration information.Be connected if CAMEL-Subscription-Information all allows to activate selectivity IP flow shunt with local configuration information, just represent to allow to activate, otherwise, represent not allow to activate.In the time that CAMEL-Subscription-Information and local configuration information all allow to activate selectivity IP flow shunt and are connected, selectivity IP flow shunt can be set in the core network control node of source and connect activation flag, if at least one of them does not allow to activate selectivity IP flow shunt and is connected for CAMEL-Subscription-Information and local configuration information, do not increase activation flag.
In preceding method embodiment, the active information that can connect according to selectivity IP flow shunt at core network control node is determined the system of selection of gateway and reselects gateway, first judge whether to reselect gateway, if do not needed, do not reselect, if needed, reselect again, can reduce unnecessary operation.Further, when core network control node reselects gateway, first-selection can be obtained the gateway that has IP to be connected with local gateway, between the gateway that guarantee reselects and local gateway, having IP is connected, thereby the continuity that keeps selectivity IP flow shunt to connect, avoids in handoff procedure, occurring interrupting.
In addition, by when set up packet data network connection for terminal, just in the core network control node of source, arrange and represent that selectivity IP flow shunt connects the flag whether activating, in the process of follow-up switching, only need to just can judge whether to have activated the connection of selectivity IP flow shunt according to activating flag, and without again judging, simplified handover operation process, and save the required spended time of switching.
With reference to Fig. 3, with the handoff procedure based on S1 interface in LTE system, preceding method is described.First, connect in the process of setting up at the packet data network of LTE system, core network control node determines that according to the CAMEL-Subscription-Information in home subscriber server and local configuration information need to activate selectivity IP flow shunt is connected, and arranges the activation flag that a selectivity IP flow shunt connects in the EPS of core network control node bearer Contexts.
The activation flag that source core network control node (source MME) connects according to the selectivity IP flow shunt in EPS bearer Contexts judges that the current selectivity IP flow shunt that activated connects, and judge and need to change to target core network control node (target MME), therefore source core network control node connects active information by selectivity IP flow shunt and sends to target core network control node.Wherein, source core network control node informs that by increase the mode of a flag in Forward Relocation Request message the current selectivity IP flow shunt that activated of target core network control node connects.Target core network control node receives after this activation message, through judgement, selects still to adopt original gateway, the subsequent operation of then switching.
With reference to Fig. 4, the device 100 that keeps selectivity IP flow shunt to connect in the time switching of the embodiment of the present invention one is shown, comprise the first judge module 20, the second judge module 30 and select module 50.
The first judge module 20, for judging that the current selectivity IP flow shunt that whether activated connects, and passes to the second judge module 30 judged result.
The second judge module 30, for judging whether core network control node changes.
Select module 50, for determining the system of selection of gateway and reselecting gateway.If core network control node changes, carry out reselecting of gateway by the selection module 50 of new core network control node, if still adopt original core network control node, carry out reselecting of gateway by the selection module 50 of source core network control node.Select module 50 can select to obtain with local gateway and have gateway that IP is connected as new gateway.The gateway that has IP to be connected with local gateway is obtained in concrete can use domain name system (DNS, Domain Name System) or local configuration.Select module 50 also can still adopt original gateway as new gateway.
With reference to Fig. 5, further, the device 100 that keeps selectivity IP flow shunt to connect in the time switching also comprises flag interpolation module 10 and information sending module 40.
Flag is added module 10, represents that for adding at source core network control node selectivity IP flow shunt connects the activation flag whether activating.The first judge module 20 can add activation flag information that module 10 adds by flag and identify the current selectivity IP flow shunt that whether activated and connect.
Information sending module 40, connects active information for sending selectivity IP flow shunt.If being core network control node, the result that the second judge module 30 judges there is change, information sending module 40 can send selectivity IP flow shunt connection active information to new core network control node, if being core network control node, the result that the second judge module 30 judges do not change, still adopt original core network control node, 40 of information sending module can not be handled it.Selecting module 50 to connect active information according to selectivity IP flow shunt determines the system of selection of gateway and reselects gateway.
With reference to Fig. 6, further, the device 100 that keeps selectivity IP flow shunt to connect in the time switching also comprises the 3rd judge module 60, being used for judging whether to activate selectivity IP flow shunt connects, and judged result is passed to flag interpolation module 10, flag is added module 10 and is added activation flag according to the judged result of the 3rd judge module 60.Wherein, the 3rd judge module 60 determines whether to activate selectivity IP flow shunt according to CAMEL-Subscription-Information and local configuration information and is connected.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.For device embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
Above method and the device that keeps selectivity IP flow shunt to connect in the time switching provided by the present invention is described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (7)
1. a method that keeps selectivity IP flow shunt to connect in the time switching, is characterized in that, comprises the following steps:
Judge that the current selectivity IP flow shunt that whether activated connects;
Judge whether core network control node changes;
In the time that judgement has activated selectivity IP shunting connection, obtain the gateway that has IP to be connected with local gateway, using the gateway getting as new gateway;
Wherein, in the time activating selectivity IP flow shunt and connect, add and activate flag in core network control node, the current selectivity IP flow shunt that whether activated connects according to activating flag and judges.
2. the method for claim 1, is characterized in that, described judge whether core network control node changes after, if core network control node change, by selectivity IP flow shunt connect active information send to new core network control node.
3. the method for claim 1, is characterized in that, describedly also comprises adding to activate before flag:
Judge whether to activate selectivity IP flow shunt and connect, if so, activate selectivity IP flow shunt and connect, and add and activate flag, otherwise, do not activate selectivity IP flow shunt and connect, do not add activation flag.
4. method as claimed in claim 3, is characterized in that, described in judge whether to activate the method that selectivity IP flow shunt connects and be:
Judge according to CAMEL-Subscription-Information and local configuration information, if all allowing to activate selectivity IP flow shunt, CAMEL-Subscription-Information and local configuration information connect, represent to allow to activate, if at least one of them does not allow to activate selectivity IP flow shunt and is connected for CAMEL-Subscription-Information and local configuration information, represent not allow to activate.
5. the method for claim 1, is characterized in that, described and local gateway have gateway that IP is connected by obtaining with domain name system or local configuration.
6. a device that keeps selectivity IP flow shunt to connect in the time switching, is characterized in that, comprising:
The first judge module, judges that the current selectivity IP flow shunt that whether activated connects;
The second judge module, judges whether core network control node changes;
Select module, in the time judging that having activated selectivity IP shunting connects, obtain the gateway that has IP to be connected with local gateway, using the gateway getting as new gateway;
Wherein, described device also comprises: flag is added module, represents that for adding selectivity IP flow shunt connects the activation flag whether activating.
7. device as claimed in claim 6, is characterized in that, described device also comprises:
Information sending module, connects active information for sending selectivity IP flow shunt.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110039752.5A CN102158915B (en) | 2011-02-17 | 2011-02-17 | Method for keeping selective IP flow shunt connection during switching and device |
| PCT/CN2012/071246 WO2012109998A1 (en) | 2011-02-17 | 2012-02-17 | Method and device for maintaining selected ip traffic offload connection during handover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110039752.5A CN102158915B (en) | 2011-02-17 | 2011-02-17 | Method for keeping selective IP flow shunt connection during switching and device |
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| CN102158915A CN102158915A (en) | 2011-08-17 |
| CN102158915B true CN102158915B (en) | 2014-07-09 |
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| WO (1) | WO2012109998A1 (en) |
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| CN102158915B (en) * | 2011-02-17 | 2014-07-09 | 大唐移动通信设备有限公司 | Method for keeping selective IP flow shunt connection during switching and device |
| CN104717705B (en) | 2013-12-12 | 2019-08-23 | 中兴通讯股份有限公司 | A kind of IP flow that processing is selected unloads method and the base station of connection |
| CN104853344B (en) * | 2014-02-17 | 2019-10-29 | 中兴通讯股份有限公司 | A kind of selection shunts the method and controller of gateway |
| CN110213798B (en) * | 2019-07-17 | 2022-10-25 | 京信网络系统股份有限公司 | Shunt method and device based on Femto gateway |
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| CN101296496A (en) * | 2007-04-29 | 2008-10-29 | 中兴通讯股份有限公司 | Method for preventing false resource release in tracing section updating or switching course |
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| EP1753198A1 (en) * | 2005-08-09 | 2007-02-14 | Alcatel | Voice over IP Network Architecture |
| CN101572855B (en) * | 2008-04-30 | 2011-09-14 | 华为技术有限公司 | Method and device for selecting gateway for terminal |
| EP2244495B1 (en) * | 2009-04-20 | 2012-09-19 | Panasonic Corporation | Route optimazion of a data path between communicating nodes using a route optimization agent |
| KR101652442B1 (en) * | 2009-05-05 | 2016-08-30 | 엘지전자 주식회사 | server for control plane at mobile communication network and method for controlling establishment of connection thereof |
| CN101925064A (en) * | 2010-06-12 | 2010-12-22 | 中兴通讯股份有限公司 | SIPTO decision making method and device of H(e)NB system |
| CN102158915B (en) * | 2011-02-17 | 2014-07-09 | 大唐移动通信设备有限公司 | Method for keeping selective IP flow shunt connection during switching and device |
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| CN101296496A (en) * | 2007-04-29 | 2008-10-29 | 中兴通讯股份有限公司 | Method for preventing false resource release in tracing section updating or switching course |
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| WO2012109998A1 (en) | 2012-08-23 |
| CN102158915A (en) | 2011-08-17 |
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