CN102480712B - Switching method and system in data flow-distributing system - Google Patents
Switching method and system in data flow-distributing system Download PDFInfo
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- CN102480712B CN102480712B CN201010558390.6A CN201010558390A CN102480712B CN 102480712 B CN102480712 B CN 102480712B CN 201010558390 A CN201010558390 A CN 201010558390A CN 102480712 B CN102480712 B CN 102480712B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/24—Interfaces between hierarchically similar devices between backbone network devices
Abstract
The invention provides a switching method in a data flow-distributing system, comprising the following steps: a core network mobility management unit sends source ISGW (integrated service gateway) information to a target ISGW while sending a session set-up message to the target ISGW; the target ISGW obtains core network gateway information from the source ISGW and performs tunnel updating with a core network gateway. The invention also provides a data flow-distributing switching system. By maintaining the core network gateway before and after being switched to be consistent, the method and the system ensure the business data of the switched core network not to be interrupted.
Description
Technical field
The present invention relates to moving communicating field, be specifically related to the changing method in mobile network data separate system and system.
Background technology
Along with the continuous lifting of radio interface rate, in addition the increase of data user, future customer data volume can present fulminant growth, and this inevitably impacts existing core net network, and existing core network element has to carry out dilatation could provide satisfied service for user.Consider that the data of growth mostly are that Internet business causes, mobile operator wishes on the basis not changing existing network, carry out local internet data distribution, avoids mass data impact the network upgrade problem brought of core net and can meet user data service demand.
A kind of data distribution system is provided as shown in Figure 1 based on 3G and the LTE core network network architecture.Fig. 1 a be in 3G network data distribution system realize framework, Fig. 1 b be in LTE network data distribution system realize framework.Table 1a is the element name and Chinese explanation that occur in the network architecture, and table 1b is the explanation of inter-network-element interface.
In the network architecture, ISGW is the network element of new definition, it has function and GTP (the GPRS Tunneling Protocol of GGSN or S-GW that standard specifies, GPRS Tunnel Protocol) proxy and NAT (Network Address Translation, network address translation) function of gateway, be deployed on data transfer path for data distribution, it adopts standard interface to be connected with other standardization network element such as SGSN, GGSN etc. in network, adopts the Gn ' of new definition or S5 ' to connect between two ISGW.The interface of new definition has GTP message and user data forwarding capability, and the non-standardization temporarily of concrete title, can not limit.It is as follows that ISGW performs data shunting principle: in 3G network, access network UTRAN is by standard DT (Direct Tunnel, direct tunnel) mode is connected with ISGW, and access network E-UTRAN is connected by standard S1-U and ISGW user data is sent to ISGW in the lte networks.ISGW is according to this locality configuration or carry out processing data packets from user's distributing strategy that strategic server issues, be sent to Internet or other operator external network by after the data NAT address transition meeting distributing strategy, operator wished the data controlled send to core network gateway GGSN or P-GW to route to operator's self-operated business network.
The Network Element Function in existing network can not be affected by the deployment of new network element ISGW and reach the object of data distribution.When user sets up network connection, SGSN or MME finds ISGW according to APN by special selector (close with existing network element and establish or dispose separately) or the dns server after upgrading, can be used as normal core network gateway to ISGW SGSN or MME to use, ISGW finds real core network gateway GGSN or P-GW according to APN by the dns server after special selector or upgrading and sets up connection between ISGW and real core network gateway subsequently.The introducing of ISGW can shield the impact on existing network, and can complete data distribution function simultaneously, and network design and evolution have certain advantage.
In order to as early as possible by data distribution to Internet or other operator external network to reduce core net burden, ISGW will try one's best close user side on physics is disposed.Along with the movement of user, the ISGW of originally user's access possibly cannot meet the data distribution needs of user's current location, therefore needs the reorientation operation carrying out ISGW according to the position of user, as shown in Figure 2.After ISGW reorientation, because real core network gateway is selected by source ISGW, the not perception of core network mobility administrative unit, cannot ensure the continuity of core network data, and prior art cannot accomplish this point at present.
Table 1a
Table 1b
Summary of the invention
The technical problem to be solved in the present invention is to provide changing method in a kind of data distribution system and system, ensures the continuity of service after switching.
In order to solve the problem, the invention provides the changing method in a kind of data distribution system, comprising:
Source ISGW information is sent to target ISGW by core network mobility administrative unit in the session establishment message sent to target ISGW;
Described target ISGW obtains core network gateway information from described source ISGW, carries out tunnel renewal with described core network gateway.
Further, said method also can have following characteristics, and described core network mobility administrative unit is Mobility Management Entity (MME) or service universal grouping wireless business supporting node (SGSN).
Further, said method also can have following characteristics, also carries indication information in described session establishment message, for informing that described target ISGW obtains user context information to described source ISGW;
Described target ISGW obtains core network gateway information from described source ISGW and comprises:
Described target ISGW, according to described indication information, obtains user context information from described source ISGW, obtains described core network gateway information from described user context information.
Further, said method also can have following characteristics, and described core network gateway information comprises core network gateway address and/or Tunnel Identifier.
Further, said method also can have following characteristics, also comprises following one or a combination set of: station address, distributing strategy, described station address and distributing strategy are used for described target ISGW and carry out data distribution in described user context information.
Further, said method also can have following characteristics, and described target ISGW obtains described user context information by interface message between the general packet wireless service tunnel protocol message of expansion or the ISGW of new definition from described source ISGW.
Further, said method also can have following characteristics, and described session establishment message is for creating packet data protocol (PDP) context request message or creating conversation request message.
The present invention also provides a kind of data distribution switched system, and described system comprises core network mobility administrative unit and target ISGW, wherein:
Described core network mobility administrative unit is used for, and in the session establishment message sent to target ISGW, source ISGW information is sent to target ISGW;
Described target ISGW is used for, and obtains core network gateway information, carry out tunnel renewal with described core network gateway from described source ISGW.
Further, said system also can have following characteristics, and described core network mobility administrative unit is Mobility Management Entity (MME) or service universal grouping wireless business supporting node (SGSN).
Further, said system also can have following characteristics, described core network mobility administrative unit also for carrying indication information in described session establishment message, for inform described target ISGW from source ISGW obtain user context information;
Described target ISGW is for according to described indication information, obtains user context information, obtain described core network gateway information from described user context information from described source ISGW.
Further, said system also can have following characteristics, and described core network gateway information comprises core network gateway address and/or Tunnel Identifier.
Further, said system also can have following characteristics, and described target ISGW, also for obtaining station address and/or distributing strategy from described user context information, carries out data distribution according to described station address and/or distributing strategy.
Further, said system also can have following characteristics, and described target ISGW is for obtaining described user context information by interface message between the general packet wireless service tunnel protocol message of expansion or the ISGW of new definition from described source ISGW.
Further, said system also can have following characteristics, and described session establishment message is for creating PDP Context request message or creating conversation request message.
The data being sent to core net when can make data distribution network element ISGW that reorientation occurs by the present invention are not interrupted, and improve user satisfaction and impression.
Accompanying drawing explanation
Accompanying drawing illustrates and is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 a is the system architecture schematic diagram that 3G network realizes data distribution;
Fig. 1 b is the system architecture schematic diagram that LTE network realizes data distribution;
Data distribution schematic diagram when Fig. 2 is ISGW reorientation in user's moving process;
Fig. 3 is embodiment of the present invention one flow chart;
Fig. 4 is embodiment of the present invention two flow chart;
Fig. 5 is embodiment of the present invention three flow chart;
Fig. 6 is embodiment of the present invention four flow chart;
Fig. 7 is embodiment of the present invention five flow chart;
Fig. 8 is embodiment of the present invention six flow chart.
Embodiment
The present invention proposes the changing method in a kind of data distribution system, comprising:
Source ISGW information is sent to target ISGW by core network mobility administrative unit in the session establishment message sent to target ISGW;
Described target ISGW obtains core network gateway information from described source ISGW, carries out tunnel renewal with described core network gateway.
Wherein, described session establishment message is for creating packet data protocol (PDP) context request message or creating conversation request message.
Wherein: core network gateway information can be carried by user context information, specifically comprises:
Core network mobility administrative unit also carries indication information in described session establishment message, in order to inform that target ISGW obtains user's context to source ISGW;
Target ISGW, according to described indication information, obtains user context information to described source ISGW, obtains core network gateway information from described user context information.
Wherein core network mobility administrative unit is Mobility Management Entity (MME) or Serving GPRS Support Node (SGSN).
Wherein said user context information comprises: core network gateway information, station address, distributing strategy one or a combination set of.Described core gateway information comprises: core network gateway address and/or Tunnel Identifier (TEID).Described station address and distributing strategy are used for described target ISGW and carry out data distribution.
Wherein, described core network gateway is GGSN or P-GW.
Wherein, user context information acquisition process can be defined new interface message or be realized by expansion GTP message between ISGW.Namely target ISGW obtains user context information by interface message between the GTP message of expansion or the ISGW of new definition from source ISGW.
Wherein ISGW information in source comprises the address, mark, Tunnel Identifier (TEID) information one or a combination set of of ISGW.
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail, can better understand the present invention to make those skilled in the art and can be implemented, but illustrated embodiment is not as a limitation of the invention.
Fig. 3 is embodiment of the present invention one, and the present embodiment is described for 3G network user initiating business request process, specifically comprises the following steps:
Step 301, the initiating business request message when user has upstream data to send or need foundation to be connected with the signaling of core net.
Step 302, if user starts data distribution function, SGSN judges whether ISGW is also suitably for user and provides shunting service, if so can not start ISGW reuse adoption process by SGSN according to the current position of user when RNC forwarding service request message (also i.e. RAI or the RNC id information of carrying).Particularly, customer position information is input to special selector (close with existing network element and establish or dispose separately) or the dns server after upgrading searches new ISGW by SGSN.
Step 303, SGSN sends to the target ISGW that finds and creates PDP Context request message in order to create user conversation, carries source ISGW information and obtain the instruction of user's context in order to indicating target ISGW to source ISGW in message.
Step 304, the context request message that target ISGW passes through new definition on Gn ' interface obtains user's context to source ISGW.Or the GTP message also can expanded in realization on Gn ' interface, is shown to be the contextual operation of acquisition as increased parameter in normal establishment or renewal PDP Context message.It should be noted that, the interface the present invention between two ISGW is defined as Gn ' interface, realization is not done restriction nominally.
Step 305, source ISGW is by context response information or expand existing GTP message back user context information to target ISGW, and message comprises core network gateway GGSN address, Tunnel Identifier (TEID), station address, distributing strategy etc.Wherein station address, distributing strategy make target ISGW normally can carry out data distribution.
Step 306, core network gateway GGSN address in the user context information that target ISGW sends according to source ISGW or core network gateway Tunnel Identifier (TEID) find core network gateway GGSN to send to upgrade PDP Context request message, the tunnel more between fresh target ISGW and core network gateway GGSN.Message comprises the information such as address, Tunnel Identifier of target ISGW.
Step 307, core network gateway GGSN replys after recording new ISGW information and upgrades PDP Context response message to target ISGW.
Step 308, target ISGW replys to SGSN and creates PDP Context response message, carries the tunnel identification information that target ISGW distributes in message.
Step 309, SGSN sends RAB assignment request message to RNC, and message comprises the empty port load-supporting of needs foundation, the address of target ISGW and tunnel identification information in order to set up the up direct tunnel between RNC and target ISGW.
Step 310, RNC sets up the empty port load-supporting between MS according to the empty port load-supporting information that step 309 obtains.
Step 311, RNC replys RAB to SGSN and assigns response message, wherein carries address and the tunnel identification information of RNC.
Step 312, SGSN sends and upgrades PDP Context request message to target ISGW, wherein carries the address of RNC and tunnel identification information in order to set up the descending direct tunnel between RNC and target ISGW.
Step 313, target ISGW replys and upgrades PDP Context response message to SGSN.
Step 314, SGSN sends and deletes PDP Context request message to source ISGW;
Step 315, source ISGW sends and deletes PDP Context response message to SGSN.
Wherein, step 314 and step 315 are optional, SGSN receive in step 308 create PDP Context response message after just can perform step 314.Also can after 304 steps obtain user's context, source ISGW starts timer, deletes the user context information self preserved after timer expiry.
It should be noted that the position that step 303 occurs to step 308 on stream as the logic step that the present invention realizes does not limit, and that bring flow process different due to position is out of shape should within equal protection.
Fig. 4 is embodiment of the present invention two, and the present embodiment please be initiated routing update process for 3G network user and is described, and specifically comprises the following steps:
Step 401, initiates Routing Area Update request message when user moves to the region beyond Route Area.
Step 402, if user starts data distribution function, according to the current position of user (RAI or the RNC id information of carrying when also namely RNC forwards Routing Area Update request message), SGSN judges whether ISGW is also suitably for user and provides shunting service, if so can not start ISGW reuse adoption process by SGSN.Particularly, customer position information is input to special selector (close with existing network element and establish or dispose separately) or the dns server after upgrading searches new ISGW by SGSN.
Step 403, SGSN sends to the target ISGW that finds and creates PDP Context request message in order to create user conversation, carries source ISGW information and obtain the instruction of user's context in order to indicating target ISGW to source ISGW in message.
Step 404, the context request message that target ISGW passes through new definition on Gn ' interface obtains user's context to source ISGW.Or the GTP message also can expanded in realization on Gn ' interface, is shown to be the contextual operation of acquisition as increased parameter in normal establishment or renewal PDP Context message.It should be noted that, the interface the present invention between two ISGW is defined as Gn ' interface, realization is not done restriction nominally.
Step 405, source ISGW is by context response information or expand existing GTP message back user context information to target ISGW, and message comprises core network gateway GGSN address, Tunnel Identifier (TEID), station address, distributing strategy etc.Wherein station address, distributing strategy make target ISGW normally can carry out data distribution.
Step 406, core network gateway GGSN address in the user context information that target ISGW sends according to source ISGW or Tunnel Identifier find core network gateway GGSN, send to core network gateway GGSN and upgrade PDP Context request message, the tunnel more between fresh target ISGW and core network gateway GGSN.Message comprises the information such as address, Tunnel Identifier of target ISGW.
Step 407, core network gateway GGSN replys after recording new ISGW information and upgrades PDP Context response message to target ISGW.
Step 408, target ISGW replys to SGSN and creates PDP Context response message, carries the tunnel identification information that target ISGW distributes in message.
Step 409, SGSN sends Routing Area Update to MS and accepts message.
Step 410, MS sends Routing Area Update and completes message to SGSN, and the Routing Area Update process that now MS initiates is finished.
Step 411 and step 412 are optional, can initiate the deletion PDP Context request message to source ISGW after SGSN receives step 408.Also can after 404 steps obtain user's context, source ISGW starts timer, deletes the user context information self preserved after timer expiry.
It should be noted that the position that step 403 occurs to step 408 on stream as the logic step that the present invention realizes does not limit, and that bring flow process different due to position is out of shape should within equal protection.
Fig. 5 is embodiment of the present invention three, and the present embodiment is described for the 3G network user process of switching, and specifically comprises the following steps:
Step 501, user regularly sends measurement report to RNC, just initiates the handoff procedure across RNC when according to wireless signal strength, RNC finds that user's present bit is equipped with when the RNC be more suitable for serves for it.By RELOCATION REQUEST message, source RNC informs that SGSN is the Target RNC that user selectes.
Step 502, if user starts data distribution function, SGSN judges whether ISGW is also suitably for user and provides shunting service, if so can not start ISGW reuse adoption process by SGSN according to the current position of user (also namely RNC sends RAI or the RNC id information belonging to the Target RNC that carries in RELOCATION REQUEST message).Particularly, customer position information is input to special selector (close with existing network element and establish or dispose separately) or the dns server after upgrading searches new ISGW by SGSN.
Step 503, SGSN sends to the target ISGW that finds and creates PDP Context request message in order to create user conversation, carries source ISGW information and obtain the instruction of user's context in order to indicating target ISGW to source ISGW in message.
Step 504, the context request message that target ISGW passes through new definition on Gn ' interface obtains user's context to source ISGW.Or the GTP message also can expanded in realization on Gn ' interface, is shown to be the contextual operation of acquisition as increased parameter in normal establishment or renewal PDP Context message.It should be noted that, the interface the present invention between two ISGW is defined as Gn ' interface, realization is not done restriction nominally.
Step 505, source ISGW is by context response information or expand existing GTP message back user context information to target ISGW, and message comprises core network gateway GGSN address, Tunnel Identifier (TEID), station address, distributing strategy etc.Wherein station address, distributing strategy make target ISGW normally can carry out data distribution.
Step 506, core network gateway GGSN address in the user context information that target ISGW sends according to source ISGW or Tunnel Identifier find core network gateway GGSN to send to upgrade PDP Context request message, the tunnel more between fresh target ISGW and core network gateway GGSN.Message comprises the information such as address, Tunnel Identifier of target ISGW.
Step 507, core network gateway GGSN replys after recording new ISGW information and upgrades PDP Context response message to target ISGW.
Step 508, target ISGW replys to SGSN and creates PDP Context response message, carries the tunnel identification information that target ISGW distributes in message.
Step 509, SGSN sends RELOCATION REQUEST message to Target RNC, and message comprises the empty port load-supporting of needs foundation, the address of target ISGW and tunnel identification information in order to set up the up direct tunnel between RNC and target ISGW.
Step 510, performs the air interface synchronization process of existing MS to Target RNC, does not repeat at this.
Step 511, SGSN sends and upgrades PDP Context request message to target ISGW, wherein carries the address of RNC and tunnel identification information in order to set up the descending direct tunnel between RNC and target ISGW.
Step 512, target ISGW replys and upgrades PDP Context response message to SGSN.
Step 513 and step 514 are optional, can initiate the deletion PDP Context request message to source ISGW after SGSN receives step 508.Also can after 504 steps obtain user's context, source ISGW starts timer, deletes the user context information self preserved after timer expiry.
It should be noted that the position that step 503 occurs to step 508 on stream as the logic step that the present invention realizes does not limit, and that bring flow process different due to position is out of shape should within equal protection.
Fig. 6 is embodiment of the present invention four, and the present embodiment is described for LTE network user initiating business request process, specifically comprises the following steps:
Step 601, the initiating business request message when user has upstream data to send or need foundation to be connected with the signaling of core net.
Step 602, if user starts data distribution function, MME judges whether ISGW is also suitably for user and provides shunting service, if so can not start ISGW reuse adoption process by MME according to the current position of user when eNB forwarding service request message (also i.e. TAI or the eNB id information of carrying).Particularly, customer position information is input to special selector (close with existing network element and establish or dispose separately) or the dns server after upgrading searches new ISGW by MME.
Step 603, MME sends to the target ISGW that finds and creates conversation request message in order to create user conversation, carries source ISGW information and obtain the instruction of user's context in order to indicating target ISGW to source ISGW in message.
Step 604, the context request message that target ISGW passes through new definition on S5 ' interface obtains user's context to source ISGW.Or the GTP message also can expanded in realization on S5 ' interface, is shown to be the contextual operation of acquisition as increased parameter in normal establishment session or renewal bearer messages.It should be noted that, the interface the present invention between two ISGW is defined as S5 ' interface, realization is not done restriction nominally.
Step 605, source ISGW is by context response information or expand existing GTP message back user context information to target ISGW, and message comprises core network gateway P-GW address, Tunnel Identifier (TEID), station address, distributing strategy etc.Wherein station address, distributing strategy make target ISGW normally can carry out data distribution.
Step 606, the core network gateway P-GW address in the user context information that target ISGW sends according to source ISGW or Tunnel Identifier find core network gateway P-GW to send to upgrade bearing request message, the tunnel more between fresh target ISGW and core network gateway P-GW.Message comprises the information such as address, Tunnel Identifier of target ISGW.
Step 607, core network gateway P-GW replys after recording new ISGW information and upgrades bearing response message to target ISGW.
Step 608, target ISGW replys to SGSN and creates conversational response message, carries the tunnel identification information that target ISGW distributes in message.
Step 609, MME sends initial context to eNB and sets up request message, and message comprises the empty port load-supporting of needs foundation, the address of target ISGW and tunnel identification information in order to set up the up direct tunnel between eNB and target ISGW.
Step 610, eNB sets up the empty port load-supporting between MS according to the empty port load-supporting information that step 609 obtains.
Step 611, eNB replys initial context and sets up response message to MME, wherein carries address and the tunnel identification information of eNB.
Step 612, MME sends and upgrades bearer messages to target ISGW, wherein carries the address of eNB and tunnel identification information in order to set up the descending direct tunnel between eNB and target ISGW.
Step 613, target ISGW replys and upgrades bearing response message to MME.
Step 614 and step 615 are optional, can initiate the deletion conversation request message to source ISGW after MME receives step 608.Also can after 604 steps obtain user's context, source ISGW starts timer, deletes the user context information self preserved after timer expiry.
It should be noted that the position that step 603 occurs to step 608 on stream as the logic step that the present invention realizes does not limit, and that bring flow process different due to position is out of shape should within equal protection.
Fig. 7 is embodiment of the present invention five, and the present embodiment please initiating updating of tracking area process be described for LTE network user, specifically comprises the following steps:
Step 701, the initiating updating of tracking area request message when user moves to the region beyond tracking area list.
Step 702, if user starts data distribution function, according to the current position of user (TAI or the eNB id information of carrying when also namely eNB forwards tracing section updating request message), MME judges whether ISGW is also suitably for user and provides shunting service, if so can not start ISGW reuse adoption process by MME.Particularly, customer position information is input to special selector (close with existing network element and establish or dispose separately) or the dns server after upgrading searches new ISGW by MME.
Step 703, MME sends to the target ISGW that finds and creates conversation request message in order to create user conversation, carries source ISGW information and obtain the instruction of user's context in order to indicating target ISGW to source ISGW in message.
Step 704, the context request message that target ISGW passes through new definition on S5 ' interface obtains user's context to source ISGW.Or the GTP message also can expanded in realization on S5 ' interface, is shown to be the contextual operation of acquisition as increased parameter in normal establishment session or renewal bearer messages.It should be noted that, the interface the present invention between two ISGW is defined as S5 ' interface, realization is not done restriction nominally.
Step 705, source ISGW by context response information or expand existing GTP message reply user context information to target ISGW, message comprises core network gateway P-GW address, Tunnel Identifier (TEID), station address, distributing strategy etc.Wherein station address, distributing strategy make target ISGW normally can carry out data distribution.
Step 706, the core network gateway P-GW address in the user context information that target ISGW sends according to source ISGW or Tunnel Identifier find core network gateway P-GW to send to upgrade bearing request message, the tunnel more between fresh target ISGW and core network gateway P-GW.Message comprises the information such as address, Tunnel Identifier of target ISGW.
Step 707, core network gateway P-GW replys after recording new ISGW information and upgrades bearing response message to target ISGW.
Step 708, target ISGW replys to MME and creates conversational response message, carries the tunnel identification information that target ISGW distributes in message.
Step 709, MME sends tracing section updating to UE and accepts message.
Step 710, UE sends tracing section updating and completes message to MME, and the tracing section updating process that now UE initiates is finished.
Step 711 and step 712 are optional, can initiate the deletion conversation request message to source ISGW after MME receives step 708.Also can after 704 steps obtain user's context, source ISGW starts timer, deletes the user context information self preserved after timer expiry.
It should be noted that the position that step 703 occurs to step 708 on stream as the logic step that the present invention realizes does not limit, and that bring flow process different due to position is out of shape should within equal protection.
Fig. 8 is embodiment of the present invention six, and the present embodiment is described for the LTE network user process of switching, and specifically comprises the following steps:
Step 801, user regularly sends measurement report to eNB, just initiates the handoff procedure across eNB when according to wireless signal strength, eNB finds that user's present bit is equipped with when the eNB be more suitable for serves for it.By RELOCATION REQUEST message, source eNB informs that MME is the target eNB that user selectes.
Step 802, if user starts data distribution function, MME judges whether ISGW is also suitably for user and provides shunting service, if so can not start ISGW reuse adoption process by MME according to the current position of user (also namely eNB sends TAI or the eNB id information belonging to the target eNB of carrying in RELOCATION REQUEST message).Particularly, customer position information is input to special selector (close with existing network element and establish or dispose separately) or the dns server after upgrading searches new ISGW by MME.
Step 803, MME sends to the target ISGW that finds and creates conversation request message in order to create user conversation, carries source ISGW information and obtain the instruction of user's context in order to indicating target ISGW to source ISGW in message.
Step 804, the context request message that target ISGW passes through new definition on S5 ' interface obtains user's context to source ISGW.Or the GTP message also can expanded in realization on S5 ' interface, is shown to be the contextual operation of acquisition as increased parameter in normal establishment session or renewal bearer messages.It should be noted that, the interface the present invention between two ISGW is defined as S5 ' interface, realization is not done restriction nominally.
Step 805, source ISGW by context response information or expand existing GTP message reply user context information to target ISGW, message comprises core network gateway P-GW address, Tunnel Identifier (TEID), station address, distributing strategy etc.Wherein station address, distributing strategy make target ISGW normally can carry out data distribution.
Step 806, the core network gateway P-GW address in the user context information that target ISGW sends according to source ISGW or Tunnel Identifier find core network gateway P-GW to send to upgrade bearing request message, the tunnel more between fresh target ISGW and core network gateway P-GW.Message comprises the information such as address, Tunnel Identifier of target ISGW.
Step 807, core network gateway P-GW replys after recording new ISGW information and upgrades bearing response message to target ISGW.
Step 808, target ISGW replys to MME and creates conversational response message, carries the tunnel identification information that target ISGW distributes in message.
Step 809, MME sends handover request message to target eNB, and message comprises the empty port load-supporting of needs foundation, the address of target ISGW and tunnel identification information in order to set up the up direct tunnel between eNB and target ISGW.
Step 810, performs the air interface synchronization process of existing UE to target eNB, does not repeat at this.
Step 811, MME sends amendment bearing request message to target ISGW, wherein carries the address of eNB and tunnel identification information in order to set up the descending direct tunnel between eNB and target ISGW.
Step 812, target ISGW replys amendment bearing response message to MME.
Step 813 and step 814 are optional, can initiate the deletion conversation request message to source ISGW after MME receives step 808.Also can after 804 steps obtain user's context, source ISGW starts timer, deletes the user context information self preserved after timer expiry.
It should be noted that the position that step 803 occurs to step 808 on stream as the logic step that the present invention realizes does not limit, and that bring flow process different due to position is out of shape should within equal protection.
The present invention also provides a kind of data distribution switched system, and described system comprises core network mobility administrative unit and target ISGW, wherein:
Described core network mobility administrative unit is used for, and in the session establishment message sent to target ISGW, source ISGW information is sent to target ISGW;
Described target ISGW is used for, and obtains core network gateway information, carry out tunnel renewal with described core network gateway from described source ISGW.
Wherein, described session establishment message is for creating PDP Context request message or creating conversation request message.
Wherein, described core network mobility administrative unit is Mobility Management Entity (MME) or service universal grouping wireless business supporting node (SGSN).
Wherein, described core network mobility administrative unit also for carrying indication information described stating in session establishment message, for inform described target ISGW from source ISGW obtain user context information;
Described target ISGW is for according to described indication information, obtains user context information, obtain described core network gateway information from described user context information from described source ISGW.
Wherein, described core network gateway information comprises core network gateway address and/or Tunnel Identifier.
Wherein, described target ISGW, also for obtaining station address and/or distributing strategy from described user context information, carries out data distribution according to described station address and/or distributing strategy.
Wherein, described target ISGW is for obtaining described user context information by interface message between the general packet wireless service tunnel protocol message of expansion or the ISGW of new definition from described source ISGW.
When reorientation occurs data distribution network element ISGW, the data of core net can be sent to not interrupt, improve user satisfaction and impression by the present invention.
Claims (14)
1. the changing method in data distribution system, is characterized in that, comprising:
Source ISGW information is sent to target ISGW by core network mobility administrative unit in the session establishment message sent to target ISGW;
Described target ISGW obtains core network gateway information from described source ISGW, carries out tunnel renewal with described core network gateway.
2. the method for claim 1, is characterized in that,
Described core network mobility administrative unit is Mobility Management Entity (MME) or service universal grouping wireless business supporting node (SGSN).
3. the method for claim 1, is characterized in that,
Also indication information is carried, for informing that described target ISGW obtains user context information to described source ISGW in described session establishment message;
Described target ISGW obtains core network gateway information from described source ISGW and comprises:
Described target ISGW, according to described indication information, obtains user context information from described source ISGW, obtains described core network gateway information from described user context information.
4. the method as described in claim 1 or 3, is characterized in that, described core network gateway information comprises core network gateway address and/or Tunnel Identifier.
5. method as claimed in claim 3, is characterized in that, also comprises following one or a combination set of: station address, distributing strategy, described station address and distributing strategy are used for described target ISGW and carry out data distribution in described user context information.
6. method as claimed in claim 3, is characterized in that, described target ISGW obtains described user context information by interface message between the general packet wireless service tunnel protocol message of expansion or the ISGW of new definition from described source ISGW.
7. as claims 1 to 3,5,6 arbitrary as described in method, it is characterized in that, described session establishment message for create packet data protocol (PDP) context request message or create conversation request message.
8. a data distribution switched system, is characterized in that, described system comprises core network mobility administrative unit and target ISGW, wherein:
Described core network mobility administrative unit is used for, and in the session establishment message sent to target ISGW, source ISGW information is sent to target ISGW;
Described target ISGW is used for, and obtains core network gateway information, carry out tunnel renewal with described core network gateway from described source ISGW.
9. system as claimed in claim 8, is characterized in that,
Described core network mobility administrative unit is Mobility Management Entity (MME) or service universal grouping wireless business supporting node (SGSN).
10. system as claimed in claim 8, is characterized in that,
Described core network mobility administrative unit also for carrying indication information in described session establishment message, for inform described target ISGW from source ISGW obtain user context information;
Described target ISGW is for according to described indication information, obtains user context information, obtain described core network gateway information from described user context information from described source ISGW.
11. systems as described in claim 8 or 10, it is characterized in that, described core network gateway information comprises core network gateway address and/or Tunnel Identifier.
12. systems as claimed in claim 10, is characterized in that,
Described target ISGW, also for obtaining station address and/or distributing strategy from described user context information, carries out data distribution according to described station address and/or distributing strategy.
13. systems as claimed in claim 10, is characterized in that, described target ISGW is for obtaining described user context information by interface message between the general packet wireless service tunnel protocol message of expansion or the ISGW of new definition from described source ISGW.
14. as claim 8 to 10,12,13 arbitrary as described in system, it is characterized in that, described session establishment message for create PDP Context request message or create conversation request message.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010558390.6A CN102480712B (en) | 2010-11-24 | 2010-11-24 | Switching method and system in data flow-distributing system |
| PCT/CN2011/081258 WO2012068939A1 (en) | 2010-11-24 | 2011-10-25 | Switching method in data distribution system and system |
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| CN102480712B true CN102480712B (en) | 2015-06-03 |
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| WO2014071568A1 (en) * | 2012-11-07 | 2014-05-15 | 华为技术有限公司 | Data shunting method and data shunting control device, transmission point and terminal |
| CN104349380B (en) | 2013-08-08 | 2018-12-04 | 中兴通讯股份有限公司 | Information exchange, diversion processing method, device, base station, RNC and terminal |
| CN104202778B (en) * | 2014-08-05 | 2017-12-19 | 电信科学技术研究院 | One kind carrying acceptance controlling method and device |
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| CN101572928A (en) * | 2008-04-30 | 2009-11-04 | 华为技术有限公司 | Switching method, communication system and associated equipment |
| CN101610462A (en) * | 2008-06-16 | 2009-12-23 | 华为技术有限公司 | A kind of data message sending method, device and communication system |
| CN101674223A (en) * | 2008-09-13 | 2010-03-17 | 华为技术有限公司 | Gateway equipment load processing method, network equipment and network system |
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| CN1842049A (en) * | 2005-03-30 | 2006-10-04 | 向为 | Method for relocating universal packet wireless service gateway support note |
| CN1984436A (en) * | 2005-12-15 | 2007-06-20 | 上海原动力通信科技有限公司 | System and method for managing shift between different access systems |
| TWM322686U (en) * | 2006-04-19 | 2007-11-21 | Interdigital Tech Corp | Apparatus for supporting routing area update procedures in a long term evolution general packet radio service tunneling protocol-based system |
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| CN101572928A (en) * | 2008-04-30 | 2009-11-04 | 华为技术有限公司 | Switching method, communication system and associated equipment |
| CN101610462A (en) * | 2008-06-16 | 2009-12-23 | 华为技术有限公司 | A kind of data message sending method, device and communication system |
| CN101674223A (en) * | 2008-09-13 | 2010-03-17 | 华为技术有限公司 | Gateway equipment load processing method, network equipment and network system |
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| CN102480712A (en) | 2012-05-30 |
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