CN106686622A

CN106686622A - Method and device for updating information of gateway

Info

Publication number: CN106686622A
Application number: CN201510758055.3A
Authority: CN
Inventors: 吴锦花; 宗在峰; 梁爽; 卢飞; 周晓云
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-11-09
Filing date: 2015-11-09
Publication date: 2017-05-17
Also published as: WO2017080261A1

Abstract

The invention relates to a method and a device for updating information of a gateway. The method comprises the steps that a mobility management entity (MME) sends a session establishment request or bearer modification request message to a gateway controller (GwC) when learning that an evolved node B (eNodeB) of user equipment (UE) changes if the GwC already subscribes to a location update report of the UE, wherein the session establishment request or bearer modification request message carries location information of the UE; and the MME acquires a gateway user (GwU) address and a tunnel endpoint identifier (TEID) from a session establishment response or bearer modification response message returned by the GwC. According to the invention, correct and reliable transmission of an uplink data flow can be ensured in the architecture in which a control plane and a user plane of the gateway (GW) are separated.

Description

A kind of gateway information update method and device

Technical field

The present invention relates to mobile management, more particularly to a kind of gateway information update method and device.

Background technology

Fig. 1 is 3GPP (the 3rd Generation Partnership Project, third generation affiliate's item Mesh) EPS (Evolved Packet System, the grouping system of evolution) structural representation, such as scheme Shown in 1,3GPP EPS include E-UTRAN (Evolved Universal Terrestrial Radio Access Network, the UMTS land radio access web of evolution), MME (Mobility Management Entity, mobile management unit), S-GW (Serving Gateway, gateway), PDN GW or P-GW (Packet Data Network Gateway, grouped data network gateway), HSS (Home Subscriber Server, home subscriber server), PCRF (Policy and Charging Rules Function, "Policy and Charging Rules Function entity) and other support node compositions.

Wherein, MME is connected with E-UTRAN by S1-MME interface, for mobile management, The chain of command related work such as the process of Non-Access Stratum signaling and the management of user's mobile management context； S-GW is the accessing gateway equipment being connected by S1-U interface with E-UTRAN, E-UTRAN with Data are forwarded between P-GW, and for caching to pending datas such as pagings；P-GW is then EPS With the borde gateway of PDN (Packet Data Network Gateway, Packet Data Network), for PDN Access and the function such as data is forwarded between EPS and PDN.PCRF is responsible for strategic decision-making and charging regulation Formulation, with operator ' s IP services (the IP service entities of operator are interacted), there is provided based on industry The gate of business data flow, service quality are controlled and charging regulation gives GW (Gateway, gateway), Loading end performs strategy and the charging regulation that PCRF is formulated.When carrying is set up, GW is according to PCRF The rule of transmission carries out QoS (Quality of Service, service quality) and authorizes and gate control.According to The charging regulation that PCRF sends, performs the operation of corresponding service data flow charge, charging both can be Line charging, or offline charging.If online charging, then need and OCS (Online Charging System, Online Charging System) credit management is carried out together.OFCS (Offline Charging System, Offline charging then and off-line accounting system) between exchange correlation charge information.Between GW and PCRF Interface be Gx interfaces, the interface between OCS is Gy interfaces, and the interface between OFCS is Gz interfaces.

In 3GPP, UE (User Equipment, user equipment) by APN (Access Point Name, APN) correspondence PDN can be found, it is to access PDN networks to set up an IP-CAN (IP Connectivity Access Network, IP connect access network) session PDN connection.

With demand growth, EPS gateways progressively generate some constraints.User data stream process are concentrated on PDN egress gateways, cause gateway device function numerous and diverse, poor expandability.The chain of command of gateway and forwarding Face highly couples, and is unfavorable for core net smooth evolution.Forwarding surface dilatation demand frequency is higher than chain of command, tightly Coupling causes the synchronization dilatation of chain of command forwarding surface, renewal of the equipment cycle is short to cause composite cost to increase.Network Layer data forwarding is difficult to user, service feature, is only capable of being forwarded according to the QoS of upper layer transfers, causes Network resource usage is poorly efficient, it is difficult to data flow is finely controlled according to user and traffic performance.Additionally, A large amount of strategies need manual configuration, cause management complexity to increase, and operation cost remains high.Therefore, Need by packet domain gateway in control function further separate with forwarding capability, with adapt to network Development with The demand of market application.

Fig. 2 is GW chains of command and the detached framework of user plane under the non-roaming scene being based on herein.Should Framework by the S-GW/P-GW in original EPS frameworks split into GwC (Gateway Controller, Gateway control face entity) and GwU (Gateway User, gateway customer face entity) two class functional network elements. GwC is responsible for the chain of command function of S/P-GW, including the selection of load sharing, GwU, IP address and The functions such as the distribution of Tunnel Identifier, tactful and charging control.GwU includes SGwU (Serving Gateway User, gateway user) and PGwU (Packet Data Network Gateway User, packet count According to network gateway user), the user plane of S-GW and P-GW is corresponded to respectively, it is responsible for the use of S/P-GW Family face correlation function, including data flow identification and depth Packet analyzing, QoS process and bearing binding, it is descending The functions such as the caching of paging data.The user plane and chain of command interface of docking correspond to respectively GwC and On SGwU/PGwU, remaining the corresponding interface function control original EPS framework.

After GW chains of command and user plane are separated, many above-mentioned the asking of existing EPS gateways presence is solved Topic, but while have also been introduced new technical problem.For example, existing handover mechanism is caused in part scene The correct reliable transmission of data flow can not be supported down.

Now in mechanism, MME carries out the selection of S-GW according to customer location and CAMEL-Subscription-Information etc..When When the position of UE is moved initiation switching with tracing section updating flow process, MME judges whether that needs are carried out The gravity treatment of S-GW, and carry out S-GW selections and the information updating of up-downgoing data transfer path.If sentencing It is disconnected to need to carry out the gravity treatment of S-GW, then conjunction is reselected according to the positional information and CAMEL-Subscription-Information after renewal Suitable S-GW, and the information such as the new S-GW uplink users face address for selecting and Tunnel Identifier are sent to ENodeB (Evolved Node B, evolved node B), updates upstream data transmitting path information, Guarantee the correct transmission of upstream data.And by new eNodeB information, such as by the descending use of eNodeB Family face address and Tunnel Identifier are sent to S-GW, update downlink data transmitting path information, it is ensured that descending The correct transmission of data.If the gravity treatment of S-GW need not be carried out, by the up use of current S-GW The information such as family face address and Tunnel Identifier is sent to new eNodeB, and by new eNodeB downlink users Face address and Tunnel Identifier send current S-GW to, carry out the reconstruction of up-downgoing data channel.Switching In flow process, whether MME changes can refer to current mechanism process, and expansion description is not done herein.

After S-GW controls are separated with user plane functions, MME is selected according to the GW that current mechanism is carried out The really selection of GwC is selected, is responsible for carrying out the choosing of GwU in its corresponding GwU group by GwC Select and manage.Then according to mechanism as described above, GwC need not switch but GwU can gravity treatment scene Under cannot then realize the correct forwarding of data.For example, the switching flow based on S1 interfaces.MME is received After the handover request message of former eNodeB, MME judges that GwC need not be changed, it will will be current GwU addresses and Tunnel Identifier are handed down to new eNodeB, then new eNodeB gets not necessarily It is final GwU addresses and Tunnel Identifier, if GwU has carried out gravity treatment, up-downgoing data channel is built Vertical mistake.Then upstream data reached and can be transmitted toward old GwU after eNodeB, may lead to not and Abandon after GwU connects or GwU is received, lead to not correct upload.The continuous of business cannot be ensured The integrality of property and data.

Therefore, after GW chains of command and user plane are separated, existing handover mechanism can not under the scene of part Support the correct reliable transmission of data flow, it is impossible to ensure the continuity and integrality of business.

The content of the invention

In view of this, present invention is primarily targeted at providing a kind of GW chains of command and user plane separator frame The method and apparatus of the correct transmitting of upstream in structure.

In order to solve the above problems, adopt the following technical scheme that.

A kind of gateway information update method, including：

Mobile management unit MME changes as the node B eNodeB of the evolution for knowing user equipment (UE) When, if gateway control face entity GwC has subscribed to the location updating report of the UE, send and create Session request or modification bearing request message give the GwC, carry in the establishment session request or modification The positional information of the UE is carried in request message；

Establishment conversational response that the MME is returned from the GwC is obtained in modification bearing response message Take gateway customer face entity GwU address and Tunnel End Point Identifier TEID.

Alternatively, the positional information includes tracking area identification TAI and customer position information ECGI.

Alternatively, the MME knows that the mode that the eNodeB of UE changes includes receiving following A kind of or several message：

Attach request, tracing section updating request, service request, handover request, forward re-positioning request.

Alternatively, described method also includes：

It is attached in the handling process of network in the UE, the MME receives what the GwC sent Conversational response message is created, knows whether the GwC subscribes to institute according to the establishment conversational response message State the location updating report of UE.

Alternatively, it is described according to the establishment conversational response message knows whether the GwC subscribe to The report of UE location updatings includes：

The MME is known when user position update action is carried in the establishment conversational response message The GwC subscribes to the location updating report of the UE to this MME.

Alternatively, the establishment conversational response or modification that the MME is returned from the GwC carries response Obtain in message also includes after GwU addresses and Tunnel End Point Identifier TEID：

If the MME is not transmitted across GwU addresses and TEID to the eNodeB after change, send out GwU addresses and TEID acquired in sending is to the eNodeB after change.

If the MME is transmitted across GwU addresses and TEID to the eNodeB after change, sentence Whether the GwU addresses and TEID for breaking acquired be identical with the eNodeB being sent to after the change, GwU addresses and TEID acquired in sending if difference is to the eNodeB after the change.

Alternatively, described method also includes：

In the handover request of eNodeB of the MME after to change or initial context request, take With affairs undetermined indicate, the affairs undetermined indicate for notifying the change after eNodeB again Receive GwU addresses and TEID or, confirm GwU not before changing, the number to being up to GwU According to caching with the carrying out for down forwarding data.

A kind of gateway information updating device, is arranged at mobile management unit MME, including：

Request module, for when the node B eNodeB of the evolution for knowing user equipment (UE) change, If gateway control face entity GwC has subscribed to the location updating report of the UE, send and create session Request changes bearing request message to the GwC, and in the establishment session request or modification request is carried The positional information of the UE is carried in message；

Acquisition module, for the establishment conversational response that returns from the GwC or modification bearing response message Middle acquisition gateway customer face entity GwU address and Tunnel End Point Identifier TEID.

Alternatively, the request module knows that the mode that the eNodeB of UE changes is following including receiving Any one appoints several message：

Alternatively, described device also includes：

Receiver module, for being attached in the handling process of network in the UE, receives the GwC Whether the establishment conversational response message of transmission, the GwC is known according to the establishment conversational response message Subscribe to the location updating report of the UE.

Alternatively, whether the receiver module knows the GwC according to the establishment conversational response message Subscribe to the UE location updatings report to refer to：

The receiver module is obtained when user position update action is carried in the establishment conversational response message Know that the GwC subscribes to the location updating report of the UE.

Alternatively, described device also includes：

Sending module, for when GwU addresses and TEID is not transmitted across to the eNodeB after change, GwU addresses acquired in the acquisition module and TEID are sent to the eNodeB after change.

Alternatively, described device also includes：

Sending module, for when GwU addresses and TEID is transmitted across to the eNodeB after change, Judge the whether phase of acquired GwU addresses and the TEID and eNodeB being sent to after the change Together, the GwU addresses and TEID acquired in sending if difference is to the eNodeB after the change.

Alternatively, the sending module is additionally operable to the handover request of the eNodeB after to change or initial In context request, carry affairs undetermined and indicate, after the affairs undetermined are indicated for notifying the change ENodeB be received again by GwU addresses and TEID or, confirm GwU not before changing, it is right The data for being up to GwU and the carrying out for down forwarding data cache.

The embodiment of the present invention can know MME in the case of GW chains of command and user plane are detached Correct GwU addresses and Tunnel End Point Identifier, and and then inform eNodeB, so as to ensure in GwU Upstream being capable of correct transmitting in the case of having change.

Other features and advantages of the present invention will illustrate in the following description, also, partly from froming the perspective of Become apparent in bright book, or understood by implementing the present invention.The purpose of the present invention is excellent with other Point can be realized and obtained by specifically noted structure in specification, claims and accompanying drawing .

Description of the drawings

Accompanying drawing is used for providing and further understanding technical solution of the present invention, and constitutes one of specification Point, it is used to explain technical scheme together with embodiments herein, do not constitute to the present invention The restriction of technical scheme.

Fig. 1 is the structural representation of the evolved packet system of 3GPP；

Fig. 2 is GW chains of command and the detached configuration diagram of user plane under non-roaming scene；

Fig. 3 is the schematic flow sheet of the gateway information update method of embodiment one；

Fig. 4 is the schematic diagram that GwC subscribes to the report of position altering event in attachment flow；

Fig. 5 is in the switching flow based on S1 interfaces, to set up correct upstream data channel schematic diagram；

Fig. 6 is in service request flow process, to set up correct upstream data channel schematic diagram；

Fig. 7 is the schematic diagram of the gateway information updating device of embodiment two.

Specific embodiment

Technical scheme is described in detail below in conjunction with drawings and Examples.

If it should be noted that not conflicting, each feature in the embodiment of the present invention and embodiment can To be combined with each other, within protection scope of the present invention.Patrol in addition, though showing in flow charts Volume order, but in some cases, can be shown or described to perform different from order herein Step.

Embodiment one, a kind of gateway information update method, as shown in figure 3, including step S110～S120：

S110, MME when know UE eNodeB change when, if GwC has subscribed to the UE Location updating report, then send and create session request or modification bearing request message to the GwC, It is described to create the positional information that the UE is carried in session request or modification bearing request message.Institute's rheme Confidence breath can be, but not limited at least include TAI (Tracking Area Identity, tracking area identification) and ECGI (User Location Information, customer position information).

The establishment conversational response or modification that S120, the MME are returned from the GwC carries response and disappears GwU addresses and TEID (Tunnel Endpoint Identifier, Tunnel End Point Identifier) are obtained in breath； Wherein, the TEID can be one or more.

In the present embodiment, the user position update is at least changed including eNodeB.

In the present embodiment, what the GwC was carried in conversational response or modification bearing response message is created GwU addresses and TEID are current correct GwU addresses and TEID；GwC can be according to institute's rheme Confidence breath determine whether to carry out GwU gravity treatments, return if without gravity treatment original GwU addresses and TEID, selects to return GwU addresses and TEID after change after GwU if gravity treatment is wanted.

Alternatively, the MME knows that the mode that the eNodeB of the UE changes can be, but not limited to Including receive it is following any one or appoint several message：Attach request, tracing section updating request, business please Ask, handover request, forward re-positioning request.

Alternatively, methods described also includes：

In this optional mode, the conversational response message that creates indicates that the GwC subscribes to the position of the UE Put updating record mode can be, but not limited to for：The GwC is in the establishment conversational response message Carry user position update action (action).It is described that institute is known according to the establishment conversational response message State GwC whether subscribe to the UE location updating report can include：The MME works as the establishment When carrying user position update action in conversational response message, know that the GwC is subscribed to this MME Location updating report (subscribing to the reporting events of the user position update of the UE) of the UE.

Alternatively, can also include after step S120：

It can be seen that, if GwU there occurs change, the GwU addresses of transmission and TEID in this alternative For the GwU addresses after change and TEID.

Alternatively, can also include after step S120：

In this alternative, the MME is known after eNodeB switchings, is first sent according to existing procedure GwU addresses and TEID are to the eNodeB after change；Positional information is retransmited afterwards to GwC；If MME has found the GwU addresses of GwC returns and TEID and the eNodeB being sent to before after change Difference, then MME send GwU addresses and TEID again to the eNodeB after change；If phase It is same then can not retransmit；Can also be arranged to regardless of whether identical, all send in other alternatives The eNodeB that acquired GwU addresses and TEID is given after change.

In this alternative, methods described can also include：

In the handover request of eNodeB of the MME after to change or initial context request, take Band Pending Transaction (affairs instruction undetermined), the Pending Transaction are used to notify ENodeB after the change be received again by GwU addresses and TEID or, confirm GwU not Before changing, the data for being up to GwU and the carrying out for down forwarding data are cached.

In this alternative, functioning as the Pending Transaction is notified after the change The GwU to be confirmed such as eNodeB whether gravity treatments, if being received again by the GwU addresses of MME transmissions Then confirm GwU gravity treatments with TEID, the GwU addresses sent again with MME and TEID substitute MME The GwU addresses for sending for the first time and TEID, carry out the transmission of upstream data；If eNodeB is pre- GwU addresses that MME sends again are not received in timing is long and TEID then confirm that GwU is not changed, The GwU addresses and TEID sent for the first time using MME carries out the transmission of upstream data.

In this alternative, eNodeB increases caching function newly.ENodeB is being received again by GwU addresses With TEID or, before confirming that GwU do not change, caching is up to the data of GwU and descending turn The data sent out.

In other alternatives, it is also possible to take following scheme：

MME known after eNodeB switchings, first according to existing procedure send GwU addresses and TEID to ENodeB after change；Positional information is retransmited afterwards to GwC；No matter from the GwU acquired in GwC Whether address and TEID are identical with the eNodeB being sent to after the change, all send again and are obtained The GwU addresses for taking and TEID are to the eNodeB after the change；

The Pending Transaction are used to notify that the eNodeB after the change is being received again by Before GwU addresses and TEID, the data and the carrying out for down forwarding data to being up to GwU are cached；

The eNodeB cachings data for being up to GwU and the data for down forwarding after the change, until GwU addresses and TEID are received from MME second, using the GwU addresses and TEID that receive for the second time Carry out upstream data transmission.

Implement example one

Handling process (one)

It is attached in the handling process of network in UE, GwC sends to MME and creates conversational response message When, user position update action is carried in message, for GwC to MME booking reader's location updating Reporting events.The UE location updatings, at least including the change of eNodeB.If creating session Default subscribers location updating action in response message, then when MME perceives the eNodeB changes of UE The location updating for sending the UE to GwC will not be triggered to report (i.e.：Send the position for carrying the UE The establishment session request or modification bearing request message of confidence breath).As shown in figure 4, handling process () Specifically include following steps：

Step 301, UE to EPS networks initiate attachment operation, and network completes the Certificate Authority to UE. Concrete steps such as 301-1 to 301-6 is described：

301-1, UE send Attach Request message to eNodeB, and message package contains：ID, last time visits The tracking area asked, the core network ability of UE, type of attachment, NAS (Non-access stratum, it is non- Access Layer) sequence number, the information such as PDN types.

301-2, eNodeB join according to RRC (Radio Resource Control, wireless heterogeneous networks) Number and the network for selecting, or MME selection functions, select MME.Then eNodeB will adhere to message New MME is transmitted to together with the TAI and ECGI mark of UE places cell.

If 301-3, UE MME after last time attachment removal there occurs change, current new MME Old MME addresses are obtained, and sends identity request message and ask IMSI to old MME (International Mobile Subscriber Identification Number, international mobile subscriber identity) With mobility context.

If 301-4, UE can not be identified in new and old MME, new MME sends mark Request message asks IMSI to UE.UE notifies network using the identification response message comprising IMSI.

If existed without UE contexts in 301-5a, network, or if Attach Request message would not have Integrity protection or encryption, or if integrity checking failure, then on verification process and NAS safety Under set up process and must carry out.If there is UE contexts and Attach Request message in network has completely Property protection or encrypt, integrity checking success, then this step is optional.If NAS security algorithms change, Then the step only carries out NAS safe contexts and sets up process.Certification and NAS safe contexts were set up Journey is carried out according to the definition of security function chapters and sections.After this step, all NAS messages will be by MME The NAS security functions protection of instruction.

301-5b, from UE obtain mobile device mark IMEI.IMEI marks must adopt cipher mode Transmission, only in the case of emergency attached and can not be certified when.In order to minimize delaying for signaling, Mobile device mark is obtained during the NAS safe contexts foundation that may be incorporated in step 301-5a. MME sends mobile device label detection and asks to give EIR (Equipment Identity Register, equipment Marker register), EIR responds the result for detecting by mobile device label detection response message.MME Determined whether to continue attaching process or refusal UE according to result.

If 301-6, UE are provided with Encryption Options transmission mark, this step in Attach Request message Encryption Options can be obtained from UE.

Step 302, MME select the mechanism of GW according to existing EPC networks, carry out gateway selection, Obtain the IP address of SGW and PGW chains of command.Whether gateway type is that existing SGW is still controlled Face and the detached GW of user plane, select without impact the GW of MME.In this example, GW types For chain of command and the detached GW of user plane, here SGW chains of command IP address is the IP address of GwC.

Step 303-306 is optional step, if there is old contextual information (for example, MME in network It is middle to there is activation bearer context), then MME deletes old in GW by deleting session request process Bearer context information.

Step 303, MME to GwC sends Delete Session Request (deletion session request) Message.

Step 304, GwC to PCRF initiates the operation of IP-CAN session terminations.

Step 305, GwC send to SGWU and PGWU and delete flow table request；

Step 306, GwC to MME replys Delete Session Response (deletion conversational response) Message.

Step 307, MME send the Create Session Request (wounds of S1-MME interface to GwC Build session request) message, carry ID, APN marks, MME chain of command TEID, GwC Address, PGW addresses, PDN addresses carry the information such as mark, switching instruction.Wherein, switching refers to Show that it be currently initial attachment or switching attachment to indicate, GwC has not according to the instruction in subsequent step Same operation, refers to subsequent step.Wherein, PGW addresses are the address (when GW sets up separately) of GwC Or the address (GW is closed when setting) of the P-GW for selecting.

Step 308, GwC select correct GwU according to gateway selecting function, that is, select to perform forwarding The GwU of function is used as SGWU and PGWU.Distribute TEID for GwU, including PGWU's is silent Recognize carrying TEID, the UL (Uplink, up-link) of SGWU default bearings and DL (Downlink, Downlink) TEID.GwC is the PDN connections distribution IP address of the UE or from outside PDN Obtain IP address.

Step 309, when deploy PCRF and create conversation request message in switching indicate do not exist, GwC IP-CAN session establishment processes are performed, acquiescence PCC (the Policy and Charging of UE are obtained Control, policy and charging control) criterion.If there is switching to indicate, GwC performs IP-CAN meetings Words modification process.The IP-CAN session establishments or modification associative operation on Gx interfaces is initiated to PCRF, The foundation of triggering relevant bearer.If not disposing dynamic PCC, GwC adopts local QoS strategy.

Step 310, GwC issue flow table to SGWU, including：The IP address of PGWU, TEID Etc. information.

Step 311, GwC issue flow table to PGWU, including：The IP address of SGWU, TEID, The information such as meter (metering) statistics.

Step 312：GwC responds Create Session Response (establishment conversational response) message and gives MME.IP address comprising SGWU, user plane TEID, chain of command TEID, the IP of PGWU Address and TEID.And user position update action is carried in message, order to MME for GwC Read the reporting events of user position update.The user position update, at least including the change of eNodeB. If creating default subscribers location updating action in conversational response message, MME perceives UE positions Will not trigger during change to GwC and send location updating report.Other EPS networks are also carried in message The relevant parameter of S1-MME interface definition.If GwC have subscribed user position update report, follow-up MME After perceiving the change of UE positions, it will send the positional information of the UE to GwC, determine for GwC Whether plan carries out GwU gravity treatments.

Step 313, access network Signalling exchange and empty port load-supporting are set up.ENodeB sends RRC connection weights To UE, it includes EPS RB (Resource Block, Resource Block) ID and Attach to configuration message Accept (additional acceptance) message.UE sends RRC connections and reconfigures completion message to eNodeB. ENodeB sends Initial Context Response (initial context response) message to new MME, The address of TEID and eNodeB of the message package containing eNode B, for the lower line number of S1-U interface According to transmission.UE sends Direct Transfer (directly shifting) message to eNodeB, the message package Complete containing Attach (additional to complete) message.ENodeB uses up NAS transmission message forwardings Attach Complete message gives new MME.

The user plane address of eNodeB and TEID are passed through Modify Bearer by step 314, MME Request (modification carries request) message is sent to GW (GwC is sent in this example).

Step 315：GwC to SGwU updates flow table, by the user plane address of eNodeB and TEID It is sent to SGwU.Downlink data channel is completed, and data can be issued to UE.

Step 316：If switching attachment scene, GwC to PGwU updates flow table, notifies GwUPGwU Data can be sent from network side.

Step 317：GwC to MME replys Modify Bearer Response (modification carries response) Message.

Handling process (two)

When below not having X2 interface to be connected with target eNodeB for source eNodeB, initiate one and be based on The flow process of the switching between the eNodeB of S1 interfaces.MME is received after handover request message, is perceived The position of UE there occurs that the eNodeB of change, i.e. UE there occurs switching, and GWC have subscribed it is described The location updating report of UE, then MME transmissions create session request or modification bearing request message, its Middle carrying positional information is to GWC.The positional information at least includes TAI and ECGI.GWC according to The positional information that MME is provided, judges whether GwU needs gravity treatment and perform, and returns to MME and creates Conversational response or modification bearing response message, correct GWU addresses and TEID information are returned to MME, and eNodeB is sent to by MME, set up correct upstream data Transfer pipe.The MME The mode of eNodeB changes is perceived, including：Attach request is received, or receives tracking area more New request, or service request is received, or handover request is received, or receive forward re-positioning request Deng.Carry out citing and retouch herein for the scene for receiving handover request or receive forward re-positioning request State.As shown in figure 5, handling process (two) specifically includes following steps：

Step 401, source eNodeB send a Handover Required (handover request message) and give Source MME (if MME there occurs change).The handover request message carry source to target clear container, Target (target) eNodeB ID (Identity, mark), target TAI, directly forwarding is marked. The carrying list for performing data forwarding is indicated in transparent vessel.The purpose of TAI is easy for selecting suitable Target MME.

If step 402, MME there occurs change, source MME selection targets MME, and send Forward Relocation Request (forward re-positioning request) message is wrapped to target MME in message Include MME user's contexts, source to target clear container, target eNodeB mark, target following area The information such as mark.Target TAI determines whether to carry out SGW/GwC gravity treatments for MME.MME Can also include in user's context：GW type identifications or chain of command user plane separate mark, indicate GW Type is that the detached GW of user plane chain of command (then MME and GwC is interacted) or user plane chain of command are closed One GW (then MME and S-GW is interacted).

Step 403, MME determine whether to carry out S-GW/GwC gravity treatments, and (whether source S-GW can be with Continue as UE services), if desired then select new S-GW/GwC.If MME is not relocated Then determine whether to carry out the gravity treatment of S-GW/GwC by source MME and selected when gravity treatment is wanted, Otherwise determine whether to carry out the gravity treatment of S-GW/GwC by purpose MME and selected when gravity treatment is wanted Select.It is the detached GW of user plane chain of command in this example, MME determines whether to carry out GwC gravity treatments And select new GwC when needed.

MME is received after handover request message, confirms that eNodeB there occurs change (according to eNodeB ID Judge), and GwC have subscribed the location updating report of the UE, then MME sends establishment session and asks Bearing request message is sought or changed to GWC, positional information is carried to GwC, including TAI, ECGI (its Include eNodeB ID), the positional information such as Serving Network (service network).Enter for GWC The judgement and execution of row GwU gravity treatments.

Step 403a, alternatively, if the gravity treatment of GwU is performed, and GwU user planes address and TEID Distributed by GwU, then GwC send the new GwU user planes address of updating route information acquisition request and TEID。

The positional information of step 404, GwC in establishment session request or modification bearing request message, With reference to GwU selection functions, determine whether to carry out the gravity treatment of GwU, if desired then perform GwU's Select.Distribute GwU user planes address and the TEID for the transmission of S1-U interface upstream data for GwU. GwC sends and creates conversational response or modification bearing response message to target MME, what carrying was distributed GwU addresses and the up TEID of user plane.If GwU has carried out gravity treatment, the GwU addresses are gravity treatment New GwU addresses afterwards.

Step 405, target MME send Handover Request (handover request) message to target ENodeB, creates UE contexts, comprising carrying information, safe context in target eNodeB.Disappear Breath carries the GwU addresses for user plane and the up TEID and EPS for carrying distribution for each EPS Carry QoS.

Step 406, target eNodeB send a Handover Request Acknowledge (switchings Request-reply) to target MME, it is S1-U interface up-downgoing that target eNodeB is included in message to message The address of packet distribution and TEID, and to receive address and the TEID of forwarding data distribution.

If step 407, MME there occurs change, target MME sends forward relocation response and disappears Cease and give source MME, it is address and the TEID for receiving forwarding data distribution that eNodeB is carried in message, Switch through and send out, message package is containing the GwU forwards address of forwarding and TEID indirectly.

Step 408, indirectly forwarding, target MME is by sending Create Indirect Data Forwarding To GwC, the message is carried to be used Tunnel Request (creating the request of indirect data forwarding tunnel) message In the target eNodeB user planes addresses of data forwarding and TEID.

Step 409, GwC to SGWU sends updating route information message, carries for data forwarding Target eNodeB IP address and TEID information.

Step 409a, GwC to PGWU sends updating route information message, carries for data forwarding Target eNodeB IP address and TEID information.

Step 410, GwC send Create Indirect Data Forwarding Tunnel Response (wounds Build the response of indirect data forwarding tunnel) to target MME, message carries GwU and connects for S1-U message The address of mouth upstream data forward and TEID.If GwC is not relocated, the MME is source MME.

Step 411-415 performs the indirect forward process of eat dishes without rice or wine handover operation and packet：

Step 411, source MME send Handover Command (switching command) message to Source eNodeB, GwU is carried in message is used for address and the TEID of data forwarding.Source eNodeB makes Handover is constructed with Target to Source transparent container (transparent vessel of target to source) Command message is sent to UE.

Step 412, source eNodeB start from source eNodeB through GwU to target eNodeB, Switch through and give uplink data.

Step 413, UE are successfully synchronized to after Target cell, send Handover Confirm (switchings Confirming) message is to target eNodeB.The data that down forward from source eNodeB are transferred to UE, And upstream data is sent to GwU by target eNodeB.

Step 414, target eNodeB send Handover Notify (switching notice) message and give Target MME, carries TAI and ECGI in message.

If step 415, target MME are relocated, target MME sends Forward Relocation Complete (forwarding reorientation complete) message is to source MME.

Step 415a, conduct response, source MME can send a Forward Relocation Complete Acknowledge (forwarding reorientation completes response) message is to target MME.

Step 416, target MME send Modify Bearer Request (modification carries request) message To GwC, user plane address and the TEID of target eNodeB are carried, alternatively, institute can also be carried State the positional information of UE.

If customer position information had been reported in step 417, step 416, and PCRF would sign the thing Part information, then GwC will with PCRF initiate IP-CAN session modifications operation, reported event information.

Step 418, GwC to SGwU sends updating route information message, carries target eNodeB IP address and TEID information.

Step 418a, GwC to PGwU sends updating route information message, carries target eNodeB IP address and TEID information.

Step 419, GwC send Modify Bearer Response (modification carries response) message to mesh Mark MME.GwC sends one or more " end marker " on old path immediately after path integration Packet bag performs reordering function with auxiliary mark eNodeB.

Step 420, downlink data run logical, source network side Release radio resource.

Step 421, source MME send Delete Indirect Data Forwarding Tunnel Request (deleting forwarding data channel request) message is released to the distributed temporary resource of forwarding indirectly to GwC.

Step 422, GwC send flow table and update request to SGwU, delete the flow table for data forwarding Information.

Step 423, GwC are returned to source MME and are deleted forwarding data channel request response message.

Handling process (three)

Below for service request flow process, i.e. UE under IDLE (free time) state, be top signaling Send or the carrying of activity reserves resource and sets up the process of a signaling connection.MME receives business After request message, the position for perceiving UE there occurs that change, i.e. eNodeB there occurs switching, if GwC have subscribed location updating report, then MME sends and creates session request or modification bearing request message To GWC, wherein carrying positional information.The positional information at least includes TAI and ECGI.GwC According to the positional information that MME is provided, judge whether GwU needs gravity treatment and perform.Return to MME Conversational response message or modification bearing response message are created, by correct GwU addresses and Tunnel Identifier TEIDs information returns to MME, and sends eNodeB to by MME, sets up correct upstream data Transfer pipe.The MME perceives the mode of eNodeB changes, including：Receiving attachment please Ask, or receive tracing section updating request, or receive service request, or receive handover request, or Receive forward re-positioning request etc..Citing description is carried out herein for the scene for receiving service request. As shown in fig. 6, handling process (three) specifically includes following steps：

Step 501, UE send Service Request by the NAS message being encapsulated in RRC information (service request) message is to MME.The message by eNodeB forwards to MME, sealed by the message It is mounted in Initial UE Message (initial UE message) of a S1-AP type and sends, initial UE Message carrying ID and customer location relevant information, including TAI and ECGI etc..

Step 502, according to the needs of network, may perform NAS authentication and safe activation process.

Step 503, MME are received after business request information, confirm that eNodeB there occurs change (root Judge according to eNodeB ID), and GwC have subscribed before this location updating report of the UE, then MME Create Session Request (establishment session request) are sent to GwC, message includes TAI, ECGI The positional informations such as (including eNodeB ID), Serving Network (service network).For GwC Carry out the judgement and execution of GwU gravity treatments.

Step 503a, alternatively, if the gravity treatment of GwU is performed, and GwU user planes address and TEID Distributed by GWU, then GwC send the new GwU user planes address of updating route information acquisition request and TEID。

Step 504, GwC are selected according to the positional information created in conversation request message with reference to GwU Function, determines whether to carry out the gravity treatment of GwU, if desired then performs the selection of GwU.For GWU Distribute the GWU addresses for the transmission of S1-U interface upstream data and TEID.GwC sends Create Session Response (establishment conversational response) message to MME, by the GwU addresses of distribution and user The up TEID in face is carried to MME.If GwU has carried out gravity treatment, the GwU addresses are after gravity treatment New GwU addresses.

Step 505, MME send S1-AP kind of message Initial Context Setup to eNodeB Request (initial context sets up request), carries GwU addresses and the up TEID of user plane in message, And carry QoS, safe context, MME signaling connections mark etc. information.

Step 506, eNodeB are according to the GwU addresses and the up TEID of user plane and carrying for receiving The information such as QoS perform radio bearer and set up process.And set up user plane safe context.Work as user plane Radio bearer set up and service request complete and EPS loaded states between UE and MME it is synchronous it Afterwards, UE is carried the EPS without radio bearer is deleted.If what default EPS was carried wirelessly holds Load is not set up, and UE locally deactivates all EPS being associated with this default bearer and carries.

Step 507, the upstream data of UE are forwarded to GwU by eNodeB.ENodeB is to step 505 The GwU addresses of middle offer and TEID send upstream data.Upstream data is forwarded to PGwU by SGwU.

Step 508, eNodeB send S1-AP kind of message Initial Context Setup Complete (initial context sets up completion message) gives MME, carries in message for downlink data transmission ENodeB user planes address and TEID, and other bearer related informations.

Step 509, MME send Modify Bearer Request (modification carries request) message and give GwC, carries the eNodeB user planes address for downlink data transmission and TEID, Yi Jiqi in message Its bearer related information.

Step 510, GwC to SGWU issues flow table, more new routing information, wherein comprising eNodeB User plane IP address and TEID information.

Step 510a, GwC to PGWU issues flow table, more new routing information, wherein comprising eNodeB User plane IP address and TEID information.So far downlink data channel is set up, and GwU can be by being somebody's turn to do Passage sends downlink data to UE.

Step 511, GwC to MME responds Modify Bearer Response (modification carries response) Message.

Fig. 5 and Fig. 6 is that MME sends wound in the switching flow or service request flow process based on S1 interfaces Build session request or modification carries request and informs that GwC positions are changed, obtain correct GwU addresses and tunnel Road is identified, and is supplied to eNodeB, sets up the schematic flow sheet of correct upstream data channel.

Handling process (four)

Under the scene of handling process (two), corresponding embodiment can also be：

MME is received after handover request message, and the position for perceiving UE there occurs change, i.e. eNodeB Switching is there occurs, and GwC have subscribed location updating report, MME is not to perform such as processing stream at once Step 403-404 in journey (two), i.e.,：Taken by creating session request or modification bearing request message Band positional information gets the handling process of correct GwU addresses and TEID to GwC.Present treatment In flow process, MME first carries out existing service request flow processing, sends currently stored GwU addresses With TEID to the eNodeB after change, and after sending Pending Transaction to the change eNodeB；Until step 416, MME again modification bearing request message in carry eNodeB addresses and TEID。

GwC carries final GwU addresses and TEID in the modification bearing response message of step 419 To MME.MME carries out the contrast of GwU information, if GwU there occurs change, is triggered to eNodeB Bearing modification flow process, issue final GwU addresses and TEID to eNodeB.

ENodeB is first data cached, completes carrying behind the GwU addresses and TEID received after updating and repaiies Changed handling, updates GwU information.And complete data cached transmission；Or receive not in scheduled duration GwU addresses and TEID to after renewal, then confirm that GwU is not changed, and is sent using original carrying It is data cached.

Alternatively, in handling process (four), eNodeB needs newly-increased caching function.Receiving renewal GwU addresses and TEID or before confirming that GwU do not change, caching is up to the number of GwU According to the data for down forwarding.

Alternatively, MME carries Pending Transaction and (treats in the handover request of step 405 Determine affairs instruction) to eNodeB, inform and subsequently there may be the gravity treatment and information updating of GwU (i.e.： It is received again by GwU addresses and TEID).It is easy to eNodeB in data transmission failure to being up to GwU Data and down forward the caching of data.Buffering time periods and mode, realize depending on specific product, Here do not limit.

The process of handling process (four) remaining detailed process is not done repetition and is retouched with each step in (two) State.

Handling process (five)

Under the scene of handling process (three), corresponding embodiment can also be：

When the position that MME perceives UE there occurs change, i.e. eNodeB there occurs switching, and GwC When the location updating that have subscribed the UE is reported, MME is not to perform such as handling process (three) at once In step 503-504, i.e.,：Position letter is carried by creating session request or modification bearing request message Cease to GwC, get the handling process of correct GwU addresses and TEID.In present treatment flow process, MME first carries out existing switching flow and processes, and the currently stored GwU addresses of transmission and TEID are to change ENodeB after more, and Pending Transaction are sent to the eNodeB after the change；Until Step 509, MME carries eNodeB addresses and TEID in modification bearing request message again.

GwC carries final GwU addresses and TEID in the modification bearing response message of step 511 To MME.MME carries out the contrast of GwU information, if GwU there occurs change, is triggered to eNodeB Bearing modification flow process, issue final GwU addresses and TEID to eNodeB.

Alternatively, in handling process (five), eNodeB needs newly-increased caching function.Receiving renewal GwU addresses and TEID or before confirming that GwU do not change, caching is up to the number of GwU According to the data for down forwarding.

Alternatively, MME carries Pending in initial context request of the step 505 to eNodeB Transaction is informed and subsequently be there may be the gravity treatment and information updating of GwU (i.e. to eNodeB：Again It is secondary to receive GwU addresses and TEID).It is easy to eNodeB in data transmission failure to being up to GwU Data and down forward the caching of data.Buffering time periods and mode, realize depending on specific product, Here do not limit.

The process of handling process (five) remaining detailed process is not done repetition and is retouched with each step in (three) State.

It is as described above, handling process () and (two), handling process () and (three) are processed Flow process (one) and (four), handling process () and (five), under having respectively constituted two scenes Four kinds of handling processes of two embodiments.Describe a kind of GW chains of command and user plane separator frame in detail Customer location changes under scene in structure, it would be preferable to support the method for the correct transmitting of data flow.The party Method applies also for the scene process of other UE positions changes.And other controls and user plane functions point From communication construction in data transfer process.The method could be applicable to GW chains of command inside and perceive To needing to carry out GWU gravity treatments, or GWC is needed to carry out GWU gravity treatments field by other external triggers Under scape, GWC issues the information such as new GWUID and address to eNodeB by MME, so as to protect Demonstrate,prove the process that the upstream in the case where GwU has change is capable of correct transmitting.

Embodiment two, a kind of gateway information updating device, are arranged at MME, as shown in fig. 7, comprises：

Request module 71, for when the node B eNodeB of the evolution for knowing user equipment (UE) change, If gateway control face entity GwC has subscribed to the location updating report of the UE, send and create session Request changes bearing request message to the GwC, and in the establishment session request or modification request is carried The positional information of the UE is carried in message；

Acquisition module 72, the establishment conversational response or modification for returning from the GwC carries response and disappears Gateway customer face entity GwU address and Tunnel End Point Identifier TEID are obtained in breath.

Alternatively, described device also includes：

In this optional mode, the receiver module knows the GwC according to the establishment conversational response message Whether subscribe to the UE location updatings report may refer to：

Alternatively, described device also includes：

In this optional mode, the sending module can be also used for the switching of the eNodeB after to change In request or initial context request, carry affairs undetermined and indicate, the affairs undetermined are indicated for notifying ENodeB after the change be received again by GwU addresses and TEID or, confirm GwU not Before changing, the data for being up to GwU and the carrying out for down forwarding data are cached.

One of ordinary skill in the art will appreciate that all or part of step in said method can pass through journey Instructing related hardware to complete, described program can be stored in computer-readable recording medium sequence, such as only Read memory, disk or CD etc..Alternatively, all or part of step of above-described embodiment can also make Realized with one or more integrated circuits.Correspondingly, each module/unit in above-described embodiment can be adopted Realized with the form of hardware, it would however also be possible to employ the form of software function module is realized.The present invention is not restricted to The combination of the hardware and software of any particular form.

Although disclosed herein embodiment as above, described content is only to readily appreciate the present invention And the embodiment for adopting, it is not limited to the present invention.Technology people in any art of the present invention Member, without departing from disclosed herein spirit and scope on the premise of, can be in the form implemented and thin Any modification and change, but the scope of patent protection of the present invention are carried out on section, still must be with appended right The scope that claim is defined is defined.

Claims

1. a kind of gateway information update method, including：

2. the method for claim 1, it is characterised in that：

The positional information includes tracking area identification TAI and customer position information ECGI.

3. the method for claim 1, it is characterised in that the MME knows UE's ENodeB change mode include receive it is following any one or appoint several message：

4. the method for claim 1, it is characterised in that also include：

5. method as claimed in claim 4, it is characterised in that described to be rung according to the establishment session Message is answered to know whether the GwC subscribes to the UE location updatings report and include：

6. the method as described in any one of Claims 1 to 5, it is characterised in that the MME is from institute GwU addresses and tunnel end are obtained in the establishment conversational response or modification bearing response message of stating GwC returns Also include after point identification TEID：

7. the method as described in any one of Claims 1 to 5, it is characterised in that the MME is from institute GwU addresses and tunnel end are obtained in the establishment conversational response or modification bearing response message of stating GwC returns Also include after point identification TEID：

8. method as claimed in claim 7, it is characterised in that also include：

9. a kind of gateway information updating device, is arranged at mobile management unit MME, it is characterised in that Including：

10. device as claimed in claim 9, it is characterised in that：

11. devices as claimed in claim 9, it is characterised in that the request module knows UE's ENodeB change mode include receive it is following any one or appoint several message：

12. devices as claimed in claim 9, it is characterised in that also include：

13. devices as claimed in claim 12, it is characterised in that the receiver module is according to described Create conversational response message and know whether the GwC subscribes to the UE location updatings report and refer to：

14. devices as described in any one of claim 9～13, it is characterised in that also include：

15. devices as described in any one of claim 9～13, it is characterised in that also include：

16. devices as claimed in claim 15, it is characterised in that：

The sending module is additionally operable to the handover request or initial context of the eNodeB after to change please In asking, carry affairs undetermined and indicate, the affairs undetermined indicate for notifying the change after eNodeB Be received again by GwU addresses and TEID or, confirm GwU not before changing, to being up to GwU Data and down forward the carrying out of data and cache.