CN101772105A - Switching method and access gateway - Google Patents
Switching method and access gateway Download PDFInfo
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- CN101772105A CN101772105A CN200810184788A CN200810184788A CN101772105A CN 101772105 A CN101772105 A CN 101772105A CN 200810184788 A CN200810184788 A CN 200810184788A CN 200810184788 A CN200810184788 A CN 200810184788A CN 101772105 A CN101772105 A CN 101772105A
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Abstract
The invention discloses a switching method and an access gateway. The method comprises the following steps that: before a terminal determines to switch to a target access gateway, the target access gateway determines that the terminal performs a switching process and sends a first registration request carrying a first flow control identity to a mobile agent node to instruct the mobile agent node to perform multi-channel binding, wherein the first flow control identity is used for instructing the mobile agent node to avoid transmitting data on a channel bound with the target access gateway; and after the terminal determines to switch to the target access gateway, the target access gateway receives data caching message and informs the mobile agent node of transmitting data on the channel bound with the target access gateway by predetermined message. After the technical scheme of the invention is adopted, the data integrity is ensured, the switching speed is increased and the switching efficiency and performance of a system can be effectively improved.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of changing method and IAD.
Background technology
In correlation technique, for high-speed real-time multi-media packet data business is provided, cordless communication network need provide QoS service end to end.As multiple access modulation technique based on the wide-band spread spectrum technology, code division multiple access (Code Division Multiple Address, abbreviate CDMA as) 2000 not only can provide high-quality voice service, packet data transmission service at a high speed also can be provided simultaneously, need to prove, HRPD (high rate packet data) (HighRate Packet Data abbreviates HRPD as) is introduced the guarantee based on the service quality of stream on many service connection basis.
Whole world inserting of microwave interoperability (Worldwide Interoperability for MicrowaveAccess, abbreviate WiMAX as) be wireless access wide band technology, can provide towards the high speed of the Internet to connect, have service quality guarantee, transmission rate height, professional characteristics such as various.
When terminal has taken place to span in network by moving of gateway, target access gateway need carry out Binding Update to the mobile agent node, so that downlink data can mail to terminal from objective network, thereby guarantees that the terminal traffic data are not lost.Fig. 1 spans into the schematic diagram of the architectural framework reference model of gateway switching for realizing the user.In Fig. 1, for packet data service is provided, wireless network node 11 be responsible for and IAD 12 between the interactive media message; Source access gateway 12 and target access gateway 13 can belong to same class connecting system, for example, belong to cdma network together; Also can adhere to dissimilar connecting systems separately, for example, WiMAX and cdma network; Authentication authorized charging server 14 provides the function of IP entitlement, mandate and charging; Mobile agent node 15 provides the mobile management solution for the user, the especially operation of the mobility between the different access technologies.
Fig. 2 switches to example from the WiMAX system to cdma system with terminal, shows the switching flow that spans into gateway in the correlation technique in the cordless communication network, and at this moment, terminal has been obtained the IP address in the WiMAX network.Wherein, WiMAX base station (Base Station, abbreviate BS as) be the source radio network node, WiMAX IAD (Access Gateway, abbreviate AGW as) be source access gateway, signaling forwarding capability (Signal ForwardingFunction, abbreviate SFF as)/access network element (Access Network Element, abbreviate AN as)/Packet Control Function (Packet Control Function, abbreviate PCF as) be target radio network node, packet data serving node (Packet Data Serving Node abbreviates PDSN as) is a target access gateway, home agent (Home Agent abbreviates HA as) is the mobile agent node.As shown in Figure 2, the concrete processing comprises following processing (step 201 is to step 218):
Step 201, terminal are carried out data flow in the WiMAX system mutual;
Step 202, terminal get access to the information of HRPD Access Network, and the HRPD session is set up in decision;
Step 203 is carried out tunnel and session and is set up between terminal and the HRPD wireless network node;
Step 204, HRPD wireless network node connect to the PDSN request to be set up, and carries indication message;
Step 205, PDSN responds connection establishment response;
Step 206 carries out between terminal and the PDSN setting up peer protocol (Peer to Peer Protocol abbreviates PPP as) session after link layer information and network layer information are consulted;
Step 207, interactive stream mapping policy information between terminal and the PDSN, PDSN flows mapping to user data and sets up;
Step 208, terminal determine to switch to the HRPD system;
Carry out routing update and be connected foundation between the step 209, terminal and HRPD wireless network node;
Step 210, HRPD wireless network node notice PDSN buffer memory downlink data;
Step 211, terminal sends mobile IP tunnel to PDSN and sets up request, and mobile IP tunnel is set up in application;
Step 212, the mutual authentication information of PDSN and authentication/authentication/accounting server (Authorization/Authentication/Accounting abbreviates AAA as) is finished authentication and mandate that terminal is inserted, and the address of HA sent to PDSN, for after PDSN and HA binding prepare;
Step 213, PDSN sends the tunnel binding request to home agent HA;
Step 214, home agent HA responds the tunnel binding request-reply to PDSN, and the tunnel is set up and is finished, because in step 210, PDSN has obtained data cached indication, this moment, PDSN carried out buffer memory with the downlink data that receives;
Step 215 discharges the WiMAX related resource, and this step occurs in after the step 211, that is, terminal is sending the resource that just can discharge after mobile IP tunnel is set up request at WiMAX to PDSN;
Step 216, terminal are set up in the HRPD system and are eated dishes without rice or wine and the link of Access Network, after the link establishment success, the downlink data that is buffered in PDSN are issued;
Step 217, PDSN moves IP tunnel foundation to terminal transmission HRPD and replys, and the switching of notice terminal is finished;
Step 218, terminal are carried out data flow in the HRPD system mutual.
Under situation shown in Figure 2, after step 211, terminal is sending the resource (as step 215) that can begin to be released in source network (being WiMAX) after mobile IP tunnel is set up request to PDSN, simultaneously, the user of core-network side can carry out access authentication and authorisation process (as step 212), as seen, step 212 and step 215 parallel work-flow.Be positioned in terminal under the situation of roaming place, PDSN need authenticate, authorize to ownership AAA by way of a plurality of visit AAA, step 212 is consuming time longer, may cause terminal after dischargeing the WiMAX resource, core-network side is not also finished access authentication and tunnel switching processing, be that step 215 is finished prior to step 213, thereby cause the downlink data can't incoming terminal after sending to the WiMAX network, cause loss of data.
In correlation technique, a kind of technical scheme that addresses the above problem is provided, Fig. 3 is that terminal as shown in Figure 3, comprises following processing (step 301 is to step 318) from the signaling process figure of WiMAX system to the cdma system switching in the correlation technique:
Step 301, terminal are carried out data flow in the WiMAX system mutual;
Step 302, terminal get access to the information of HRPD Access Network, and determine to set up the HRPD session in advance, enter handoff preparation phase;
Step 303 is carried out tunnel and session and is set up between terminal and the HRPD wireless network node;
Step 304, HRPD wireless network node connect to the PDSN request to be set up, and carries indication message;
Step 305, PDSN responds connection establishment response;
Step 306 carries out between terminal and the PDSN setting up the PPP session after link layer information and network layer information are consulted;
Step 307, terminal sends mobile IP tunnel to PDSN and sets up request, and mobile IP tunnel is set up in application;
Step 308, the mutual authentication information of PDSN and AAA is finished authentication and mandate that terminal is inserted, and the address of HA is sent to PDSN, for after PDSN and HA binding prepare; If terminal is under the situation of roaming, in this step implementation, intermediate demand is through the AAA transmitting signaling on a plurality of visits ground, still owing in the preparatory stage, therefore can not cause losing of data;
Step 309, PDSN sends the tunnel binding request to home agent HA;
Step 310, home agent HA responds the tunnel binding request-reply and gives PDSN, and do not remove with the binding of former network, so far, home agent HA can send to downlink data PDSN and WiMAX IAD simultaneously; Because the HRPD system eats dishes without rice or wine and the also not foundation of Access Network link, after downlink data arrived PDSN, PDSN abandoned the downlink data that receives; Downlink data is sent to terminal from the WiMAX network before the WiMAX resource does not also discharge;
Step 311, PDSN moves IP tunnel to terminal transmission HRPD and sets up request-reply, and notice terminal tunnel is set up and is finished, and the IP of terminal is sent to terminal;
Step 312, interactive stream mapping policy information between terminal and the PDSN is so that PDSN flows mapping to user data;
Step 313, terminal determine to switch to the HRPD system;
Carry out routing update and be connected foundation between the step 314, terminal and HRPD wireless network node;
Step 315, HRPD wireless network node notice PDSN buffer memory downlink data, at this moment, the downlink data that is sent by HA carries out buffer memory at PDSN, up to the HRPD network eat dishes without rice or wine and Access Network link establishment success after be handed down to terminal;
Step 316, the WiMAX related resource discharges, and this step occurs in after the step 214;
Step 317, terminal are set up in the HRPD system and are eated dishes without rice or wine and the link of Access Network, after the link establishment success, send the downlink data that is buffered in PDSN;
Step 318, terminal are carried out data flow in the HRPD system mutual.
By above-mentioned processing as can be seen, in step S309 and step S310, home agent HA can send to downlink data PDSN and WiMAX IAD simultaneously; But owing to eating dishes without rice or wine and the also not foundation of Access Network link of HRPD system, after downlink data arrived PDSN, PDSN need abandon the downlink data that receives; Need ceaselessly carry out the processing that abandons by PDSN owing to send to the data of PDSN, increase a lot of network processes burdens to PDSN.
Summary of the invention
Consider at target access gateway and do not finish as yet under the situation of authentication and tunnel switching, source of release access network resource, can't incoming terminal and cause data-bag lost and the target access gateway network processes big problem of burden and propose the present invention thereby cause downlink data to send to behind the source network, for this reason, main purpose of the present invention is to provide a kind of improved handover scheme, to solve the problems referred to above of existing in the correlation technique one of at least.
To achieve these goals, according to an aspect of the present invention, provide a kind of changing method, be used for terminal is spanned into gateway to target access gateway by source access gateway switching.
Changing method according to the present invention comprises: determined before target access gateway switches in terminal, target access gateway is determined terminal execution hand-off process, and initiate to carry first register requirement of first-class control sign to the mobile agent node, carry out many tunnel binding with indication mobile agent node, wherein, first-class control sign be used to indicate the mobile agent node forbid with the tunnel transmitting data of target access gateway binding; Determine that in terminal after target access gateway switched, target access gateway received metadata cache message, and with predetermined message notice mobile agent node with the tunnel transmitting data of target access gateway binding.
Wherein, target access gateway determines that terminal comprises carrying out hand-off process: target access gateway receives request from the target radio network node message that connects, and determines that according to the connect indication message of carrying in the message of request terminal carrying out hand-off process.
In addition, after the mobile agent node initiated to carry the register requirement of Flow Control sign, said method also comprises: the mobile agent node carried out many tunnel binding with source access gateway and target access gateway respectively at target access gateway; The mobile agent node with the tunnel of source access gateway binding on send downlink data to source access gateway, and forbid with the tunnel of target access gateway binding on send downlink data to target access gateway.
In addition, determine that in terminal said method also comprises: terminal is carried out routing update and is connected foundation with target radio network node after target access gateway switches; Target radio network node sends metadata cache message to target access gateway.
In addition, target access gateway with predetermined message notice mobile agent node with the tunnel transmitting data of target access gateway binding after, said method also comprises: the downlink data that target access gateway buffer memory mobile agent node sends, and target access network eat dishes without rice or wine and Access Network link establishment success after, the downlink data of buffer memory is sent to terminal.
Wherein, predetermined message comprises: second register requirement that carries second Flow Control sign that target access gateway sends to the mobile agent node, wherein, second Flow Control sign be used to notify the mobile agent node with the tunnel transmitting data of target access gateway binding.
To achieve these goals, according to an aspect of the present invention, provide a kind of IAD.
IAD according to the present invention comprises: determination module is used for determining whether terminal is carrying out hand-off process; First sending module, be used for determining under the situation of terminal execution hand-off process at determination module, initiate to carry first register requirement of first-class control sign to the mobile agent node, wherein, first register requirement is used to indicate the mobile agent node to carry out many tunnel binding, first-class control sign be used to indicate the mobile agent node forbid with the tunnel transmitting data of target access gateway binding; Receiver module is used for the metadata cache message that the receiving target wireless network node sends; Notification module is used for after receiver module receives metadata cache message, with predetermined message notice mobile agent node with the tunnel transmitting data of target access gateway binding.
In addition, above-mentioned determination module is further used for: determine that according to the indication message of target radio network node in the request that target access gateway sends connects message terminal is in the execution hand-off process.
In addition, above-mentioned IAD further comprises: binding module is used for carrying out tunnel binding with the mobile agent node; Cache module is used for the downlink data that buffer memory mobile agent node sends; Issue module, be used for target access network eat dishes without rice or wine and Access Network link establishment success after, the downlink data of buffer memory is sent to terminal.
Wherein, predetermined message comprises: second register requirement that carries second Flow Control sign that target access gateway sends to the mobile agent node, wherein, second Flow Control sign be used to notify the mobile agent node with the tunnel transmitting data of target access gateway binding.
By means of technical scheme of the present invention, by in registration message, carrying the Flow Control sign mobile agent node is carried out data flow con-trol, solved at target access gateway and do not finished as yet under the situation of authentication and tunnel switching, source of release access network resource, can't incoming terminal and cause data-bag lost and the big problem of target access gateway network processes burden thereby cause downlink data to send to behind the source network, guaranteed the integrality of data, improved the speed of switching, effectively elevator system switching efficiency and performance.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 realizes in the correlation technique that the user spans into the schematic diagram of the architectural framework reference model of gateway switching;
Fig. 2 is the signaling process figure one that terminal is switched to cdma system from the WiMAX system in the correlation technique;
Fig. 3 is the signaling process figure two that terminal is switched to cdma system from the WiMAX system in the correlation technique;
Fig. 4 is the flow chart according to the changing method of the embodiment of the invention;
Fig. 5 is the signaling process figure that switches to cdma system from the WiMAX system according to the terminal of the embodiment of the invention;
Fig. 6 is the block diagram according to the IAD of the embodiment of the invention.
Embodiment
Functional overview
In correlation technique, as shown in Figure 2, PDSN is when visit AAA, if terminal is in the roaming place, then PDSN need could arrive the AAA of ownership place and finish verification process through the AAA on a plurality of visits ground, this process need expends the long time, therefore, caused terminal after discharging the WiMAX Internet resources, core-network side is not also finished the switching of access authentication and tunnel, can't incoming terminal thereby cause downlink data to send to behind the WiMAX network, caused the problem of data-bag lost, technical scheme has as shown in Figure 3 solved above-mentioned problem, but, as shown in Figure 3, because PDSN (target access gateway) need ceaselessly abandon the downlink data that receives, increased a lot of network processes burdens to PDSN.Based on the problems referred to above, the invention provides a kind of improved handover scheme.
In technical scheme of the present invention, in pre-registration stage (promptly, terminal was determined before target access gateway switches), initiate user's access authentication, authorization flow and tunnel by terminal and set up flow process, if target access gateway is found terminal and is being carried out hand-off process, then send the register requirement that carries the Flow Control sign, realize many tunnel binding with indication mobile agent node, but forbid on this tunnel, transmitting data to the mobile agent node.In actual switch step (promptly, terminal is determined after target access gateway switches), target access gateway is initiated register requirement to the mobile agent node after receiving metadata cache message, and carrying the Flow Control sign, indication mobile agent node can transmit data on this tunnel.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
In the following description, for the purpose of explaining, a plurality of specific details have been described, to provide to thorough of the present invention.Yet, obviously, do not having can to realize the present invention under the situation of these specific detail yet, in addition, under the situation that does not deviate from the spirit and scope that claims illustrate, among following embodiment and the embodiment each details can be carried out various combinations.
Method embodiment
According to embodiments of the invention, a kind of changing method is provided, be used for terminal is spanned into gateway to target access gateway by source access gateway switching.Fig. 4 is the flow chart according to the changing method of the embodiment of the invention, as shown in Figure 4, comprises following processing (step S402-step S404):
Step S402, determined before target access gateway switches in terminal, target access gateway is determined terminal execution hand-off process, target access gateway can send first register requirement that carries the first-class control sign to the mobile agent node, carry out many tunnel binding (promptly with indication mobile agent node, carry out tunnel binding respectively with source access gateway and target access gateway), wherein, first-class control sign be used to indicate the mobile agent node forbid with the tunnel transmitting data of target access gateway binding.
In step S402, target access gateway can determine that terminal carrying out hand-off process according to following mode: the target access gateway indication message of carrying in the message that can connect according to the request from target radio network node that receives determines that terminal is in the execution hand-off process.
And after the mobile agent node initiated to carry the register requirement of Flow Control sign, the mobile agent node needed to carry out many tunnel binding with source access gateway and target access gateway respectively at target access gateway; The mobile agent node is according to the indication of Flow Control sign, with the tunnel of source access gateway binding on send downlink data to source access gateway, and forbid with the tunnel of target access gateway binding on send downlink data to target access gateway.
Step S404 determines that in terminal after target access gateway switched, target access gateway received metadata cache message, with predetermined message notice mobile agent node with the tunnel transmitting data of target access gateway binding.Wherein, predetermined message includes but not limited to: second register requirement that carries second Flow Control sign that target access gateway sends to the mobile agent node, wherein, second Flow Control sign be used to notify the mobile agent node with the tunnel transmitting data of target access gateway binding.
In step S404, determine that in terminal terminal need be carried out routing update and be connected foundation with target radio network node after target access gateway switches; After finishing routing update and connecting the operation of setting up, target radio network node can send metadata cache message to target access gateway, after the metadata cache message that target access gateway receiving target wireless network node sends, just can with predetermined message notify the mobile agent node with the tunnel transmitting data of target access gateway binding, and buffer memory mobile agent node is by the downlink data of the tunnel transmission of binding, target access gateway target access network eat dishes without rice or wine and Access Network link establishment success after, just the downlink data of buffer memory can be sent to terminal.
Below in conjunction with Fig. 5, with the mobile IP user is that example describes to the cdma system switching processing from the WiMAX system terminal of the present invention, Fig. 5 is the signaling process figure that switches to cdma system from the WiMAX system according to the terminal of the embodiment of the invention, as shown in Figure 5, comprise following processing (step 501 is to step 520):
Step 501, terminal are carried out data flow in the WiMAX system mutual;
Step 502, terminal get access to the information of HRPD Access Network, and determine to set up the HRPD session in advance, enter handoff preparation phase;
Step 503 is carried out tunnel and session and is set up between terminal and the HRPD wireless network node;
Step 504, HRPD wireless network node connect to the PDSN request to be set up, and carries indication message;
Step 505, PDSN responds connection establishment response;
Step 506 carries out between terminal and the PDSN setting up the PPP session after link layer information and network layer information are consulted;
Step 507, terminal sends mobile IP tunnel to PDSN and sets up request, and mobile IP tunnel is set up in application;
Step 508, the mutual authentication information of PDSN and AAA is finished authentication and mandate that terminal is inserted, and the address of HA is sent to PDSN; If terminal is under the situation of roaming, in this step implementation, intermediate demand is through the AAA transmitting signaling on a plurality of visits ground, still owing in the preparatory stage, therefore can not cause losing of data;
Step 509, PDSN finds that the HRPD wireless network node carries indication message in the step 504 in the message that PDSN request connection is set up, just can determine terminal in the execution hand-off process, then in the request of home agent HA transmission tunnel binding, carry Flow Control sign (corresponding to the step S402 among Fig. 4);
Step 510, home agent HA responds the tunnel binding request-reply and gives PDSN, and at this moment, HA binds with WiMAX IAD and PDSN simultaneously, and home agent HA only is sent to downlink data the WiMAX IAD, and does not send data to PDSN;
Step 511, PDSN moves IP tunnel to terminal transmission HRPD and sets up request-reply, and notice terminal tunnel is set up and is finished, and the IP of terminal is sent to terminal;
Step 512, interactive stream mapping policy information between terminal and the PDSN is so that PDSN flows mapping to user data;
Step 513, terminal determine to switch to the HRPD system;
Carry out routing update and be connected foundation between the step 514, terminal and HRPD wireless network node;
Step 515, HRPD wireless network node notice PDSN buffer memory downlink data;
Step 516, PDSN sends the tunnel binding request to HA, carries the Flow Control sign, and notice HA can mail to downlink data PDSN (corresponding to the step S404 among Fig. 4);
Step 517, HA responds to PDSN loopback tunnel binding.At this moment, PDSN carries out buffer memory to downlink data, up to the HRPD network eat dishes without rice or wine and Access Network link establishment success after be handed down to terminal;
Step 518, the WiMAX related resource discharges, and this step occurs in after the step 514;
Step 519, terminal are set up in the HRPD system and are eated dishes without rice or wine and the link of Access Network, after the link establishment success, send the downlink data that is buffered in PDSN;
Step 520, terminal are carried out data flow in the HRPD system mutual.
From Fig. 5 handling process as can be seen, by the mobile agent node is carried out the data necessary current control, solved that the source Access Network discharges resource but target access gateway does not also have loss of data and the target access gateway network processes problem that over-burden under the situation of handover success because of authentication, and accelerated the speed of actual switch step simultaneously.
Device embodiment
According to embodiments of the invention, a kind of IAD is provided, Fig. 6 is the block diagram according to the IAD of the embodiment of the invention, as shown in Figure 6, comprises determination module 1, first sending module 2, receiver module 3, notification module 4, binding module 5, cache module 6, issues module 7.To each module in the Access Network Central Shanxi Plain be described below.
Particularly, in IAD, determination module 1 is used for determining whether terminal is carrying out hand-off process, and particularly, determination module 1 can determine that terminal is in the execution hand-off process according to the indication message of target radio network node in the request that target access gateway sends connects message; First sending module 2 is connected to determination module 1, be used for determining under the situation of terminal execution hand-off process at determination module 1, initiate to carry first register requirement of first-class control sign to the mobile agent node, wherein, first register requirement is used to indicate the mobile agent node to carry out many tunnel binding, first-class control sign be used to indicate the mobile agent node forbid with the tunnel transmitting data of target access gateway binding; Receiver module 3 in the IAD is used for the metadata cache message that the receiving target wireless network node sends; After receiver module 3 receives metadata cache message, the notification module 4 that is connected to receiver module 3 just can with predetermined message notify the mobile agent node with the tunnel transmitting data of target access gateway binding.Above-mentioned predetermined message includes but not limited to: second register requirement that carries second Flow Control sign that first sending module 2 of IAD sends to the mobile agent node, wherein, second Flow Control sign be used to notify the mobile agent node with the tunnel transmitting data of target access gateway binding.
In addition, can further include in the IAD: binding module 5 is connected to determination module 1, be used for determining under the situation of terminal execution hand-off process at determination module 1, carry out tunnel binding with the mobile agent node, and, do not receive at receiver module 3 under the situation of metadata cache message, forbid the tunnel transmitting data of mobile agent node in binding module 5 bindings; Cache module 6 is connected to receiver module 3, is used for receiving under the situation of metadata cache message at receiver module 3 downlink data that buffer memory mobile agent node sends; Issue module 7 and be connected to cache module 6, be used for target access network eat dishes without rice or wine and Access Network link establishment success after, the downlink data of cache module 6 buffer memorys is sent to terminal.
Need to prove, under the situation that does not deviate from the spirit and scope that claims illustrate, can carry out various changes and combination above-mentioned each module.
In sum, by means of technical scheme of the present invention, by in registration message, carrying the Flow Control sign mobile agent node is carried out data flow con-trol, solved at target access gateway and do not finished as yet under the situation of authentication and tunnel switching, source of release access network resource, can't incoming terminal and cause data-bag lost and the big problem of target access gateway network processes burden thereby cause downlink data to send to behind the source network, guaranteed the integrality of data, improved the speed of switching, effectively elevator system switching efficiency and performance.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. changing method is used for terminal and spans into the switching of gateway by source access gateway to target access gateway, it is characterized in that described method comprises:
Determined before described target access gateway switches in described terminal, described target access gateway is determined described terminal execution hand-off process, and initiate to carry first register requirement of first-class control sign to the mobile agent node, carry out many tunnel binding to indicate described mobile agent node, wherein, described first-class control sign be used to indicate described mobile agent node forbid with the tunnel transmitting data of described target access gateway binding;
Determine that in described terminal after described target access gateway switched, described target access gateway received metadata cache message, and with predetermined message notify described mobile agent node with the tunnel transmitting data of described target access gateway binding.
2. method according to claim 1 is characterized in that, described target access gateway determines that described terminal comprises in the execution hand-off process:
Described target access gateway receives request from the target radio network node message that connects, and determines that according to the connect indication message of carrying in the message of described request described terminal carrying out hand-off process.
3. method according to claim 1 is characterized in that, after described mobile agent node initiated to carry the register requirement of Flow Control sign, described method also comprised at described target access gateway:
Described mobile agent node carries out many tunnel binding with source access gateway and described target access gateway respectively;
Described mobile agent node with the tunnel of described source access gateway binding on send downlink data to described source access gateway, and forbid with the tunnel of described target access gateway binding on send described downlink data to described target access gateway.
4. method according to claim 1 is characterized in that, determines that in described terminal described method also comprises after described target access gateway switches:
Described terminal is carried out routing update and is connected foundation with target radio network node;
Described target radio network node sends described metadata cache message to described target access gateway.
5. method according to claim 1 is characterized in that, described target access gateway notify with predetermined message described mobile agent node with the tunnel transmitting data of described target access gateway binding after, described method also comprises:
The downlink data that the described mobile agent node of described target access gateway buffer memory sends, and target access network eat dishes without rice or wine and Access Network link establishment success after, the described downlink data of buffer memory is sent to described terminal.
6. method according to claim 1 is characterized in that, described predetermined message comprises:
Second register requirement that carries second Flow Control sign that described target access gateway sends to described mobile agent node, wherein, described second Flow Control sign be used to notify described mobile agent node with the tunnel transmitting data of described target access gateway binding.
7. an IAD is characterized in that, described IAD comprises:
Determination module is used for determining whether described terminal is carrying out hand-off process;
First sending module, be used for determining under the situation of described terminal execution hand-off process at described determination module, initiate to carry first register requirement of first-class control sign to the mobile agent node, wherein, described first register requirement is used to indicate described mobile agent node to carry out many tunnel binding, described first-class control sign be used to indicate described mobile agent node forbid with the tunnel transmitting data of target access gateway binding;
Receiver module is used to receive the metadata cache message that described target radio network node sends;
Notification module is used for after described receiver module receives described metadata cache message, with predetermined message notify described mobile agent node with the tunnel transmitting data of described target access gateway binding.
8. IAD according to claim 7 is characterized in that, described determination module is further used for:
Determine that according to the indication message of target radio network node in the request that described target access gateway sends connects message described terminal is in the execution hand-off process.
9. IAD according to claim 7 is characterized in that, described IAD further comprises:
Binding module is used for carrying out tunnel binding with described mobile agent node;
Cache module is used for the downlink data that the described mobile agent node of buffer memory sends;
Issue module, be used for target access network eat dishes without rice or wine and Access Network link establishment success after, the described downlink data of buffer memory is sent to described terminal.
10. IAD according to claim 7, it is characterized in that, described predetermined message comprises: second register requirement that carries second Flow Control sign that described target access gateway sends to described mobile agent node, wherein, described second Flow Control sign be used to notify described mobile agent node with the tunnel transmitting data of described target access gateway binding.
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| CN2008101847880A CN101772105B (en) | 2008-12-29 | 2008-12-29 | Switching method and access gateway |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102469619A (en) * | 2010-11-12 | 2012-05-23 | 中兴通讯股份有限公司 | Mobile communication system and method for relocation of service gateway thereof |
| WO2018006359A1 (en) * | 2016-07-07 | 2018-01-11 | 华为技术有限公司 | Method for establishing tunnel between local gateways, and gateway |
| CN112654071A (en) * | 2020-12-31 | 2021-04-13 | 广州技象科技有限公司 | Downlink data transmission method, device, equipment and storage medium based on Internet of things |
| WO2022012506A1 (en) * | 2020-07-13 | 2022-01-20 | 华为技术有限公司 | Communication method and communication apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996814A (en) * | 2006-01-06 | 2007-07-11 | 华为技术有限公司 | A traffic control method |
| CN101128013A (en) * | 2006-08-14 | 2008-02-20 | 华为技术有限公司 | A switching method for access gateway in mobile communication system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102469619A (en) * | 2010-11-12 | 2012-05-23 | 中兴通讯股份有限公司 | Mobile communication system and method for relocation of service gateway thereof |
| CN102469619B (en) * | 2010-11-12 | 2016-12-28 | 中兴通讯股份有限公司 | A kind of mobile communication system and the method for gateway reorientation thereof |
| WO2018006359A1 (en) * | 2016-07-07 | 2018-01-11 | 华为技术有限公司 | Method for establishing tunnel between local gateways, and gateway |
| US10798762B2 (en) | 2016-07-07 | 2020-10-06 | Huawei Technologies Co., Ltd. | Method for establishing tunnel between local gateways, and gateway |
| US11438942B2 (en) | 2016-07-07 | 2022-09-06 | Huawei Technologies Co., Ltd. | Method for establishing tunnel between local gateways, and gateway |
| WO2022012506A1 (en) * | 2020-07-13 | 2022-01-20 | 华为技术有限公司 | Communication method and communication apparatus |
| CN112654071A (en) * | 2020-12-31 | 2021-04-13 | 广州技象科技有限公司 | Downlink data transmission method, device, equipment and storage medium based on Internet of things |
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|---|---|
| CN101772105B (en) | 2012-06-06 |
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