CN104869660A - Method, controller and gateway capable of ensuring continuity of business data - Google Patents
Method, controller and gateway capable of ensuring continuity of business data Download PDFInfo
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- CN104869660A CN104869660A CN201410061237.0A CN201410061237A CN104869660A CN 104869660 A CN104869660 A CN 104869660A CN 201410061237 A CN201410061237 A CN 201410061237A CN 104869660 A CN104869660 A CN 104869660A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
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Abstract
The invention discloses a method, a controller and a gateway capable of ensuring the continuity of business data. The method comprises the steps that when the controller determines that a path/local gateway connected to a terminal packet data network PDN is not optimal, the controller queries a uniform gateway about whether data is transmitted; and if no data is transmitted, the controller notifies a mobile management entity MME to initiate a packet data network PDN connection reconstruction flow. The method, the controller and the gateway capable of ensuring the continuity of the business data can solve the problem that a sub-optimal path leads to an increased network load, increased data business transmission delay and the like.
Description
Technical field
The present invention relates to the communications field, in particular to be specifically related to user perform SIPTO time, a kind of ensure the successional method of business datum, controller and gateway.
Background technology
3GPP(3rd Generation Partnership Project, third generation partner program) the middle SIPTO(Selected IP Traffic Offload defined, select the unloading of IP flow) be a kind of position being attached to access network near user, to the method that specific business is shunted.Specifically, except supporting the access of mobile core network, mobile communication system (comprising home base station system) can also support IP diverter function, have IP separation capacity at wireless side network element, user contract allow IP shunting condition under, this locality access of mobile terminal to other IP devices of home network or the Internet can be realized.
Software defined network (Software Defined Network, SDN), it is a kind of new network innovation framework, its core technology OPENFLOW(open flows) by network equipment chain of command and data surface are separated, thus achieve the flexible control of network traffics, for the innovation of core network and application provides good platform.
Fig. 1 is a kind of configuration diagram realizing SIPTO based on SDN, the realization of IP shunting in figure provides providing powerful support for IP dividing technology by setting up shunting gateway, shunting gateway is the gateway being linked into external network (such as Internet) as this locality, and shunting gateway in figure is gateway and local gateway.Adopt the thought of control plane and data retransmission planar separation, by gateway (ServingGateway, and packet data gateway (Packet Data Network Gateway S-GW), and/or local gateway (Local Gateway P-GW), L-GW) controlling functions and data retransmission function are separated, chain of command realizes by controller is unified, the instruction instruction that user face (also referred to as the face of forwarding or data surface) is controlled by controller by a logical gateway realizes, simultaneously, user plane gateway is also docked with existing wireless side network element, wireless side network element is eNB(evolved NodeB, evolution wireless base station) or HeNB(HomeeNB, family's evolution wireless base station) and/or home base-station gateway.Each gateway shown in Fig. 1 is unified user plane gateway, for convenience, still represents the user plane functions of corresponding SGW, LGW and PGW that user face is realized by unified gateway herein with S-GW, LGW and PGW.
Current system supports the reorientation operation of S-GW, see the schematic diagram (note: the line in figure between MME and wireless side network element, between controller and user plane gateway does not draw) in Fig. 2, subscriber equipment may be moved, arrive new wireless side network element overlay area, controller selects new S-GW by for subscriber equipment, and S-GW repositioning process will be performed.In S-GW repositioning process, according to the requirement of existing system, LGW/PGW, as anchor gateway, is unalterable.Therefore the IP data service of follow-up operation is closed with source S-GW the L-GW1 established carry out external route by being transmitted back to by target S-GW, and for target S-GW, L-GW1 is not optimum gateway (L-GW2 is only), this just causes data service roundabout forwarding in the core network, be not namely optimal path (thick dashed line is non-optimal path as shown in Figure 2, and fine dotted line is optimum path) by the path of L-GW1 yet.Non-optimal path can cause network load to increase the weight of, and data traffic transmission postpones the shortcomings such as increase.
Except mobility result in the non-situation having path most, also have a kind of situation to be, even if terminal is not moved, but due to the load condition of network be constantly change, uneven distribution may be there is in the load condition of unified gateway.Therefore a certain moment, the overload of some gateway possible, causes the business experience of user not good.In this case, controller needs the PDN for this user to connect the relative preferably unified gateway of selection another one to perform the function in SGW or PGW user face.
According to existing knowledge, we can know, at the optimum gateway of the selection that connecting for PDN, and are connected by PDN when being switched on optimum gateway, how to ensure that business datum is not lost, ensure Consumer's Experience, are very crucial problems.
For the problems referred to above, at present effective solution is not yet proposed.
Summary of the invention
The technical problem to be solved in the present invention is to provide and ensures the successional method of business datum, controller and gateway, can solve non-optimal path and network load can be caused to increase the weight of, and data traffic transmission postpones the problem of increase etc.
According to an aspect of the present invention, provide and ensure the successional method of business datum, comprising:
When controller judges that path/local gateway that end packet data network PDN connects is not optimum, whether described controller has transfer of data to unified gateway inquiry;
If when Query Result is without described transfer of data, described controller notice mobile management entity MME initiation packet data network PDN connection reconstruction flow process.
Preferably, whether described controller has user data transmission package to draw together to unified gateway inquiry:
Controller sends inquiry request message to unified gateway, and to make unified gateway judge whether have user data transmission in the fixed time, wherein inquiry request message is that OPENFLOW protocol message carries inquiry indication information;
Described controller receives the query response message that described unified gateway sends, and wherein query response message is that OPENFLOW protocol message carries Query Result.
Preferably, described unified gateway judges whether have user data transmission package to draw together in the fixed time:
Described unified gateway is the transfer of data whether packet data network PDN Connection inquiring has corresponding PDN and connect within the time period of specifying, and in described fixed time section, is one of following situation:
From unified gateway performs described judgement operation in a period of time forward;
From unified gateway performs described judgement operation in a period of time backward;
From unified gateway performs described judgement operation forward and extend back in a period of time;
The i.e. speed per hour time point of described judgement is performed at unified gateway.
Preferably, described unified gateway judges whether have user data transmission package to draw together in the fixed time:
In unified gateway, timer is set for each packet data network PDN connects, wherein, timing from receiving user data, and upper once receive user data time be that timer sets to 0, described Preset Time is set to T1;
After described unified gateway receives inquiry request message, compare the value T2 of T1 and current timer, if T1 is less than or equal to T2, then within the T1 time, described PDN connection does not have transfer of data; If T1 is greater than T2, local gateway waits for the time of T1-T2, judges do not have transfer of data within the described stand-by period.
Preferably, described controller comprises to mobile management entity MME initiation packet data network PDN connection reconstruction flow process:
Controller sends to MME and rebuilds instruction, initiates to carry the PDN Connection Release process of rebuilding instruction to make described MME;
Described controller is carried on to the reconstruction instruction that MME sends and creates conversational response message, or revises in bearing response message or general packet radio service technology tunnel protocol GTP message.
Preferably, described unified gateway bag is: the gateway performing packet data gateway P-GW, local gateway L-GW or gateway S-GW.
According to a further aspect in the invention, provide a kind of controller, comprising:
First judge module, for judging that whether path that end packet data network PDN connects is optimum or whether local gateway is optimum;
Whether enquiry module, for when described path/local gateway is not optimum, have transfer of data in unified gateway inquiry Preset Time;
Initiation module, for when Query Result does not have described transfer of data, to mobile management entity MME initiation packet data network PDN connection reconstruction flow process.
In accordance with a further aspect of the present invention, provide a kind of gateway, comprising:
Receiver module, for receiving the inquiry request of self-controller, described inquiry request is for inquiring about in Preset Time whether have transfer of data;
Second judge module, for judging whether have transfer of data in Preset Time;
Sending module, for sending query response message to controller.
Controller judges current whether optimum gateway, and IAD judges the transfer of data whether having user in a period of time.At non-optimal gateway and when not having transfer of data, controller sends to Mobility Management Entity and rebuilds Indication message.Then, Mobility Management Entity initiates to carry the PDN Connection Release process of rebuilding instruction, and user re-establishes PDN and connects, thus sets up optimal path, and ensures that the data flow of user is not interrupted, to strengthen user's experience.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the configuration diagram realizing SIPTO based on SDN according to correlation technique;
Fig. 2 is the configuration diagram according to the switching comprising S-GW reorientation in correlation technique;
Fig. 3 is the method flow diagram according to the embodiment of the present invention;
Fig. 4 is the flow chart comprising the successional method of guarantee business datum that S-GW reorientation switches according to the scene of the system architecture based on Fig. 1 of the embodiment of the present invention;
Fig. 5 is the flow chart according to the successional method of guarantee business datum under the roaming scence of the embodiment of the present invention;
Fig. 6 is the flow chart of the successional method of guarantee business datum of the load-balancing scenario of consideration P-GW according to the embodiment of the present invention;
Fig. 7 is control device structured flowchart according to the preferred embodiment of the invention;
Fig. 8 is gateway architecture block diagram according to the preferred embodiment of the invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiments provide a kind of successional method of guarantee business datum, Fig. 3 is the method flow diagram according to the embodiment of the present invention, as shown in Figure 3, comprises following step:
S302., when controller judges that path/local gateway that end packet data network PDN connects is not optimum, whether described controller has transfer of data to unified gateway inquiry;
If when S304. Query Result is without described transfer of data, described controller notice mobile management entity MME initiation packet data network PDN connection reconstruction flow process.
In order to make technical scheme of the present invention and implementation method clearly, below in conjunction with preferred embodiment, its implementation procedure is described in detail.
Embodiment one
Be described below according to preferred process step a kind of under SIPTO scene of the present invention:
Step 1, in the process comprising S-GW reorientation, controller receive represent need S-GW reorientation set up session request after, judge whether the path comprising target S-GW is optimal path, i.e. LGW whether best gateway;
It should be noted that, user moves in the service range of target S-GW, and user has been optimal path through wireless side network element to target S-GW, and causing the reason in non-optimal path to be local gateway is not optimum local gateway.
Step 2, if not optimal path, so controller sends inquiry request message to local gateway, and whether be used for has the data of user to transmit in inquiry a period of time;
Step 3, after the time arrives, local gateway sends query response message to controller;
Step 4, if query response message shows do not have data to transmit, so controller sends to Mobility Management Entity and rebuilds Indication message; After Mobility Management Entity receives, initiate to carry the PDN rebuilding instruction cause value and connect the process disconnected.
The present embodiment need expand the message between Mobility Management Entity and controller and between controller and user plane gateway LGW, the reconstruction Indication message that newly-increased controller sends to Mobility Management Entity, after Mobility Management Entity receives, initiate to carry the PDN Connection Release process of rebuilding instruction.Increase the inquiry request message between controller and local gateway and query response message newly, for inquiring about and showing whether have the data of user to transmit in a period of time.
In addition, you need to add is that, after UE initiates PDN connection establishment again, controller can according to the existing gateway being operating as newly-built PDN and connecting selection optimum.
Fig. 4 is according to a kind of handoff procedure comprising S-GW reorientation based on framework shown in Fig. 1 of the present invention.What discuss is the concrete enforcement of the framework that the present invention is based on Fig. 1.Fig. 4 only draws message related to the present invention in handoff procedure.
Step is described below:
401, Target Wireless side network element is to Mobility Management Entity transmit path convert requests;
402, Mobility Management Entity sends to controller and sets up session request;
403, controller receive represent need S-GW reorientation set up session request after, select target gateway, according to the knowledge of the full mesh topology of oneself, controller judges whether current be optimal path (see note 1);
404a, if controller judges that user is not optimal path through wireless side network element, destination service gateway to local gateway, namely local gateway LGW is not now optimum for destination service gateway yet, so controller sends inquiry request message to local gateway, whether inquiry has the data of user in transmission within a period of time, and the time can be arranged by controller.Inquiry request message is that the cell of expansion has by expansion OPENFLOW protocol message: inquiry instruction and query time etc.If controller judges that current is optimal path, so this step does not send message;
404b, controller issues stream table to destination service gateway;
404c, controller issues stream table to local gateway;
405, controller sends to Mobility Management Entity and sets up conversational response;
406, Mobility Management Entity confirms to the conversion of Target Wireless side network element transmit path;
407, if local gateway receives the message of step 404a, local gateway/unified gateway judges whether ought have data for the previous period.Be specifically as follows:
From local gateway/unified gateway performs described judgement operation in a period of time forward;
From local gateway/unified gateway performs described judgement operation in a period of time backward;
From local gateway/unified gateway performs described judgement operation forward and extend back in a period of time;
The i.e. speed per hour time point of described judgement is performed at local gateway/unified gateway.
Determination methods is exemplified below, local gateway judges whether (ought be assumed to be T1) for the previous period has data, in local gateway, timer is set for each PDN of each UE connects, timing from the data (upstream or downstream) receiving this UE, sets to 0 to when receiving data next time to timer.After local gateway receives inquiry request message, compare the value T2 of T1 and current timer, if T1 is less than or equal to T2, just think that during this period of time this PDN connection of this UE does not have transfer of data; If T1 is greater than T2, local gateway waits for time of T1-T2, judges to be connected with at this PDN during this period of time do not have data.Local gateway sends query response message to controller, and query response message is the message of the OPENFLOW agreement of expansion, and the cell of expansion has Query Result (with or without transfer of data) etc.;
408, if controller receives the query response message from local gateway, and query response message represents do not have data during this period of time, so controller sends to Mobility Management Entity and rebuilds Indication message, the information that reconstruction Indication message will comprise has: rebuild cause value, user ID, APN(AccessPoint Name, Access Point Name) etc.; Have data to transmit if query response message represented in user's a period of time, then controller is according to configuration, again can send inquiry request or what does not do;
409, if Mobility Management Entity receives the reconstruction Indication message of self-controller, so Mobility Management Entity initiates to carry the PDN Connection Release process of rebuilding instruction;
410, after the process of step 409 completes, user initiates PDN connection establishment again.
It should be noted that, controller, according to the query response message from local gateway, sends to Mobility Management Entity and rebuilds Indication message, can occur in handoff procedure, also can occur in after switching completes.
The present embodiment is equally applicable to comprise the position updating process of S-GW reorientation and the handoff procedure comprising S-GW reorientation of Mobility Management Entity change, at this moment, the message of step 301 is respectively the forward pass RELOCATION REQUEST message that location request message and source Mobility Management Entity send to target mobility management entity.
Embodiments of the invention one are equally applicable to the process comprising S-GW reorientation that the location updating under non-SIPTO scene, the process comprising S-GW reorientation and MME change, and the local gateway now in embodiment one is P-GW.
The present embodiment also has a kind of mutation to realize, and is also that " the reconstruction indication information " carried in step S408 is carried to MME by step S405.This just requires that the message of step 405 must the Query Result of waiting step S407, after requiring in sequential that step 405 need occur in step S407.
S402 step in figure and S405 portion message are create session request and create conversational response when controller has replacing, if when controller is not changed, should be amendment carrying request and amendment bearing response message.Message name in figure is only signal, specifically should with reference to illustrating herein.
Embodiment two
The present invention is equally applicable to the roaming scence of non-SIPTO or the scene with legacy network intercommunication, suppose that visited network is the EPC(Evolved Packet Core based on SDN, evolution block core net) framework, home network is traditional EPC framework or the EPC framework based on SDN, can select optimum gateway according to the present invention for user.
A process step according to the present invention is described below:
Step 1, the controller in visited network detects the current whether optimum gateway of S-GW or P-GW for user's service;
Step 2, if controller detects that S-GW or PGW is not optimum gateway, so controller sends inquiry request message (because be roaming scence, PGW is not in controller control range) to S-GW, and whether inquiry present period has the data of user to transmit;
Step 3, S-GW returns query response message to controller;
Step 4, if the query response message from S-GW shows that user's present period does not have data, so controller sends to Mobility Management Entity and rebuilds Indication message, after Mobility Management Entity receives, initiates to carry the PDN rebuilding instruction cause value and connects the process disconnected.
It should be noted that, whether trigger controller to be the event of optimum gateway can be if detecting current S-GW or P-GW: switching, location updating, service request or controller timing detect.If switch or location updating, the flow process that the operation such as service request triggers, so controller can be by newly-increased signaling to the reconstruction indication information that mobile management entity sends, and also can be carry indication information in existing message.Fig. 5 is according to a particular flow sheet of the present invention, and in figure, P-GW is P-GW in legacy network or based on the user plane gateway in SDN framework; Gateway is positioned at visited network, controls by visited network controller.
Step describes:
501, controller judges that current S-GW or P-GW is not optimum gateway;
502, controller sends inquiry request message to gateway, inquires about and whether have the data of user in transmission within a period of time, time can be arranged by controller, inquiry request message is OPENFLOW protocol message, and the information comprised has: inquiry instruction, query time etc.;
503, if gateway receives the message of step 502, gateway is after the stipulated time detects data service (testing mechanism is with step 407), gateway sends query response message to controller, query response message is OPENFLOW protocol message, and the information comprised has: Query Result (namely whether having data);
504, if controller receives the query response message from gateway, and query response message represents do not have data during this period of time, so controller sends to Mobility Management Entity and rebuilds Indication message, the information that reconstruction Indication message will comprise has: rebuild cause value, user ID, APN etc.; Have data to transmit if query response message represented in user's a period of time, then controller is according to configuration, again can send inquiry request or what does not do;
If above-mentioned flow process switches or location updating, the flow process that the operation such as service request triggers, so controller can be by newly-increased signaling to the reconstruction indication information that mobile management entity sends, and also can be carry indication information in existing message.The transmit mechanism of step 504 is with the relation of the step 405 in Fig. 4 and step 408.
505, if Mobility Management Entity receives the reconstruction Indication message of self-controller, so Mobility Management Entity initiates to carry the PDN Connection Release process of rebuilding instruction;
506, after the process of step 505 completes, user initiates PDN connection establishment process, and PDN connection establishment process middle controller selects optimum gateway for user.
Embodiment three
The present invention is equally applicable to consider that the load balancing of P-GW is the scene that user selects optimum gateway.The load balancing of P-GW considered by controller, selects the P-GW of relative free for user's service.To the user of access overload P-GW, in inquiry a period of time, whether there is transfer of data, if there is no transfer of data, so controller sends to MME and rebuilds Indication message, MME initiates PDN and connects disconnection process, and then, user is initiated to the PDN connection establishment process of idle P-GW again.
Describe according to another process step of the present invention:
Step 1, controller timing detects the load of P-GW;
Step 2, whether controller sends inquiry request message to the P-GW being in overload, have user data to transmit in inquiry a period of time;
Step 3, after the time arrives, P-GW sends query response message to controller;
Step 4, if query response message shows do not have data to transmit, so controller sends to Mobility Management Entity and rebuilds Indication message, after Mobility Management Entity receives, initiates to carry the PDN rebuilding instruction cause value and connects the process disconnected.If by chance have switching or location updating to occur in this process, the flow process that the operation such as service request triggers, so controller can be by newly-increased signaling to the reconstruction indication information that mobile management entity sends, and also can be carry indication information in existing message.
Fig. 6 is consideration P-GW load balancing according to the present invention for user selects optimum gateway, ensures the flow chart of the successional method of business datum, and step describes:
601, controller timing detects the load of P-GW, and the source P-GW of detecting is in overload;
602, for the user being linked into source P-GW, controller sends inquiry request message to source P-GW, the data of user whether are had to transmit in inquiry a period of time, inquiry request message is the OPENFLOW protocol message of expansion, and the cell of expansion has: inquiry instruction, query time etc.;
603, if source P-GW receives the message of step 602, local gateway is after the stipulated time detects data service (testing mechanism is with step 407), query response message is sent to controller, query response message is OPENFLOW protocol message, and the information comprised has: Query Result (namely whether having data);
604, if controller receives the query response message from source P-GW, and query response message represents do not have data during this period of time, so controller sends to Mobility Management Entity and rebuilds Indication message, the information that reconstruction Indication message comprises has: rebuild cause value, user ID, APN etc.;
605, if Mobility Management Entity receives the reconstruction Indication message of self-controller, so Mobility Management Entity initiates to carry the PDN Connection Release process of rebuilding instruction;
606, after the process of step 605 completes, user initiates PDN connection establishment again, re-establishes in PDN connection procedure, and controller is the target P-GW that user selects to be in idle condition.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
The embodiment of the present invention additionally provides a kind of controller, may be used for realizing said method.Fig. 7 is the structured flowchart of corresponding above-described embodiment, as shown in Figure 7, comprising: when terminal is moved sexual behavior part,
First judge module 701, for judging that whether path that end packet data network PDN connects is optimum or whether local gateway is optimum;
Whether enquiry module 702, for when described path/local gateway is not optimum, have transfer of data in unified gateway inquiry Preset Time;
Initiation module 703, for when Query Result does not have described transfer of data, to mobile management entity MME initiation packet data network PDN connection reconstruction flow process.
Preferably, described enquiry module 702 comprises further:
Transmitting element, for sending inquiry request message to unified gateway, to make unified gateway judge whether have user data transmission in Preset Time, wherein inquiry request message is that OPENFLOW protocol message carries inquiry indication information;
Receiving element, for receiving the query response message that described unified gateway sends, wherein query response message is that OPENFLOW protocol message carries Query Result.
The embodiment of the present invention additionally provides a kind of gateway, may be used for realizing said method.Fig. 8 is the structured flowchart of corresponding above-described embodiment, as shown in Figure 8, comprising:
Receiver module 801, for receiving the inquiry request of self-controller, described inquiry request is for inquiring about in Preset Time whether have transfer of data;
Second judge module 802, for judging whether have transfer of data in Preset Time;
Sending module 803, for sending query response message to controller.
Preferably, in described receiver module 801, inquiry request message is OPENFLOW protocol message, and described inquiry request message comprises following information: inquiry instruction, query time;
In described sending module 803, query response message is OPENFLOW protocol message, and described query response message comprises following information: Query Result.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. ensure the successional method of business datum, it is characterized in that, the method comprises:
When controller judges that path/local gateway that end packet data network PDN connects is not optimum, whether described controller has transfer of data to unified gateway inquiry;
If when Query Result is without described transfer of data, described controller notice mobile management entity MME initiation packet data network PDN connection reconstruction flow process.
2. method according to claim 1, is characterized in that, whether described controller has user data transmission package to draw together to unified gateway inquiry:
Controller sends inquiry request message to unified gateway, and to make unified gateway judge whether have user data transmission in the fixed time, wherein inquiry request message is that OPENFLOW protocol message carries inquiry indication information;
Described controller receives the query response message that described unified gateway sends, and wherein query response message is that OPENFLOW protocol message carries Query Result.
3. method according to claim 2, is characterized in that, described unified gateway judges whether have user data transmission package to draw together in the fixed time:
Described unified gateway is the transfer of data whether packet data network PDN Connection inquiring has corresponding PDN and connect within the time period of specifying, and in described fixed time section, is one of following situation:
From unified gateway performs described judgement operation in a period of time forward;
From unified gateway performs described judgement operation in a period of time backward;
From unified gateway performs described judgement operation forward and extend back in a period of time;
The i.e. speed per hour time point of described judgement is performed at unified gateway.
4. method according to claim 2, is characterized in that, described unified gateway judges whether have user data transmission package to draw together in the fixed time:
In unified gateway, timer is set for each packet data network PDN connects, wherein, timing from receiving user data, and upper once receive user data time be that timer sets to 0, described Preset Time is set to T1;
After described unified gateway receives inquiry request message, compare the value T2 of T1 and current timer, if T1 is less than or equal to T2, then within the T1 time, described PDN connection does not have transfer of data; If T1 is greater than T2, local gateway waits for the time of T1-T2, judges do not have transfer of data within the described stand-by period.
5. method according to claim 1, is characterized in that, described controller comprises to mobile management entity MME initiation packet data network PDN connection reconstruction flow process:
Controller sends to MME and rebuilds instruction, initiates to carry the PDN Connection Release process of rebuilding instruction to make described MME;
Described controller is carried on to the reconstruction instruction that MME sends and creates conversational response message, or revises in bearing response message or general packet radio service technology tunnel protocol GTP message.
6. the method according to any one of claim 1-5, is characterized in that, described unified gateway bag is: the gateway performing packet data gateway P-GW, local gateway L-GW or gateway S-GW.
7. a controller, is characterized in that, described controller comprises:
First judge module, for judging that whether path that end packet data network PDN connects is optimum or whether local gateway is optimum;
Whether enquiry module, for when described path/local gateway is not optimum, have transfer of data in unified gateway inquiry Preset Time;
Initiation module, for when Query Result does not have described transfer of data, to mobile management entity MME initiation packet data network PDN connection reconstruction flow process.
8. controller according to claim 7, is characterized in that, described enquiry module comprises:
Transmitting element, for sending inquiry request message to unified gateway, to make unified gateway judge whether have user data transmission in Preset Time, wherein inquiry request message is that OPENFLOW protocol message carries inquiry indication information;
Receiving element, for receiving the query response message that described unified gateway sends, wherein query response message is that OPENFLOW protocol message carries Query Result.
9. a gateway, is characterized in that, described gateway comprises:
Receiver module, for receiving the inquiry request of self-controller, described inquiry request is for inquiring about in Preset Time whether have transfer of data;
Second judge module, for judging whether have transfer of data in Preset Time;
Sending module, for sending query response message to controller.
10. gateway according to claim 9, is characterized in that, in described receiver module, inquiry request message is OPENFLOW protocol message, and described inquiry request message comprises following information: inquiry instruction, query time;
In described sending module, query response message is OPENFLOW protocol message, and described query response message comprises following information: Query Result.
11. gateways according to claim 9, is characterized in that, described second judge module comprises:
Setting unit, for arranging timer for each packet data network PDN connects, wherein, timing from receiving user data, and upper once receive user data time be that timer sets to 0, described Preset Time is set to T1;
Comparing unit, for after described receiver module receives inquiry request message, compares the value T2 of T1 and current timer, if T1 is less than or equal to T2, then within the T1 time, described PDN connection does not have transfer of data; If T1 is greater than T2, local gateway waits for the time of T1-T2, judges do not have transfer of data within the described T1-T2 time.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410061237.0A CN104869660A (en) | 2014-02-21 | 2014-02-21 | Method, controller and gateway capable of ensuring continuity of business data |
| PCT/CN2014/080337 WO2015123948A1 (en) | 2014-02-21 | 2014-06-19 | Method, controller, and gateway for ensuring service data continuity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| WO2015123948A1 (en) | 2015-08-27 |
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