CN101772105B - Switching method and access gateway - Google Patents
Switching method and access gateway Download PDFInfo
- Publication number
- CN101772105B CN101772105B CN2008101847880A CN200810184788A CN101772105B CN 101772105 B CN101772105 B CN 101772105B CN 2008101847880 A CN2008101847880 A CN 2008101847880A CN 200810184788 A CN200810184788 A CN 200810184788A CN 101772105 B CN101772105 B CN 101772105B
- Authority
- CN
- China
- Prior art keywords
- access gateway
- target access
- terminal
- mobile agent
- agent node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
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, professional for the high-speed real-time multi-media packet data is provided, cordless communication network need provide QoS service end to end.As the multiple access modulation technique that is the basis with the wide-band spread spectrum technology; Code division multiple access (Code Division Multiple Address; Abbreviate CDMA as) 2000 high-quality voice service not only can be provided, packet data transmission service at a high speed also can be provided simultaneously, need to prove; HRPD (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 characteristics such as service quality guarantee, transmission rate is high, business is various.
When moving of gateway taken place to span in network at the terminal, target access gateway need carry out Binding Update to the mobile agent node, so that downlink data can mail to the terminal from objective network, thereby guarantees that the terminal traffic data are not lost.Fig. 1 spans into the sketch map 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 can belong to same type of connecting system with target access gateway 13, for example, belongs 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 the terminal, shows the switching flow that spans into gateway in the correlation technique in the cordless communication network, and at this moment, the terminal has obtained the IP address in the WiMAX network.Wherein, WiMAX base station (Base Station abbreviates BS as) is the source radio network node; WiMAX IAD (Access Gateway abbreviates AGW as) is a source access gateway, signaling forwarding capability (Signal ForwardingFunction; Abbreviate SFF as)/access network element (Access Network Element abbreviates AN as)/Packet Control Function (Packet Control Function abbreviates PCF as) is a target radio network node; Packet data serving node (Packet Data Serving Node; Abbreviate PDSN as) be 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 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 confirm 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, the IP tunnel foundation request of moving is sent to PDSN in the terminal, and application is set up and is moved IP tunnel;
Step 212; The mutual authentication information of PDSN and authentication/authentication/accounting server (Authorization/Authentication/Accounting abbreviates AAA as) is accomplished authentication and mandate that the terminal is inserted; And the address of HA sent to PDSN, for after PDSN with 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 accomplished, 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, the terminal just can discharge the resource at WiMAX to the mobile IP tunnel foundation of PDSN transmission request back;
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 accomplished;
Step 218, terminal are carried out data flow in the HRPD system mutual.
Under situation shown in Figure 2; After step 211; The resource (like step 215) that can begin to be released in source network (being WiMAX) after mobile IP tunnel is set up request is being sent at the terminal to PDSN, simultaneously, the user of core-network side can carry out access authentication and authorisation process (like step 212); Thus it is clear that, step 212 and step 215 parallel work-flow.Be positioned at the terminal under the situation of roaming place; PDSN need carry out authentication, mandate to ownership AAA by way of a plurality of visit AAA, and step 212 is consuming time longer, possibly cause the terminal after dischargeing the WiMAX resource; Core-network side is not also accomplished access authentication and tunnel switching processing; Being step 215 accomplishes prior to step 213, thereby causes the downlink data can't incoming terminal after sending to the WiMAX network, causes loss of data.
In correlation technique, a kind of technical scheme that addresses the above problem is provided, Fig. 3 is the signaling process figure that switch to cdma system from the WiMAX system at the terminal in the correlation technique, and is as shown in Figure 3, comprises following processing (step 301 to step 318):
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 confirm to set up in advance the HRPD session to get into 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, the IP tunnel foundation request of moving is sent to PDSN in the terminal, and application is set up and is moved IP tunnel;
Step 308, the mutual authentication information of PDSN and AAA is accomplished authentication and mandate that the terminal is inserted, and the address of HA is sent to PDSN, for after PDSN with HA binding prepare; If the 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 PDSN and WiMAX IAD simultaneously with downlink data; Because eat dishes without rice or wine and the Access Network link of HRPD system are not also set up, after downlink data arrived PDSN, PDSN abandoned the downlink data that receives; Downlink data is sent out to the 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 tunnel, terminal is set up and is accomplished, and the IP at terminal is sent to the 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 confirm 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 with Access Network link establishment success after be handed down to the 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.
Can find out that through above-mentioned processing in step S309 and step S310, home agent HA can send to PDSN and WiMAX IAD simultaneously with downlink data; 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 accomplish 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, a kind of changing method is provided, has been used for the terminal is spanned into gateway to target access gateway by source access gateway switching.
Changing method according to the present invention comprises: confirmed before target access gateway switches at the terminal; Target access gateway is confirmed 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, the first-class control sign is used to indicate the mobile agent node to forbid at the tunnel transmitting data of binding with target access gateway; Confirm that at the terminal after target access gateway switched, target access gateway received metadata cache message, and with predetermined message notice mobile agent node at the tunnel transmitting data of binding with target access gateway.
Wherein, Target access gateway confirms that the terminal comprises carrying out hand-off process: target access gateway receives request from the target radio network node message that connects, and confirms that according to the connect indication message of carrying in the message of request the 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 sends downlink data to source access gateway on the tunnel of binding with source access gateway, and forbids on the tunnel of binding with target access gateway, sending downlink data to target access gateway.
In addition, confirm that at the terminal said method also comprises: the terminal is carried out routing update and is connected foundation with target radio network node after target access gateway switches; Target radio network node is sent metadata cache message to target access gateway.
In addition; Target access gateway with predetermined message notice mobile agent node after the tunnel transmitting data of binding with target access gateway; Said method also comprises: the downlink data that target access gateway buffer memory mobile agent node sends; And the target access network network eat dishes without rice or wine with Access Network link establishment success after, the downlink data of buffer memory is sent to the 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 is used to notify the mobile agent node at the tunnel transmitting data of binding with target access gateway.
To achieve these goals, according to an aspect of the present invention, a kind of IAD is provided.
IAD according to the present invention comprises: determination module is used for confirming whether the terminal is carrying out hand-off process; First sending module; Be used for confirming 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, and first-class control sign is used to indicate the mobile agent node to forbid at the tunnel transmitting data of binding with target access gateway; 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 at the tunnel transmitting data of binding with target access gateway.
In addition, above-mentioned determination module is further used for: confirm that according to the indication message of target radio network node in the request that target access gateway sends connects message the 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 the target access network network eat dishes without rice or wine with Access Network link establishment success after, the downlink data of buffer memory is sent to the 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 is used to notify the mobile agent node at the tunnel transmitting data of binding with target access gateway.
By means of technical scheme of the present invention; Through 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 accomplished 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, has 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 specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 realizes in the correlation technique that the user spans into the sketch map of the architectural framework reference model of gateway switching;
Fig. 2 is the signaling process figure one that switch to cdma system from the WiMAX system at the terminal in the correlation technique;
Fig. 3 is the signaling process figure two that switch to cdma system from the WiMAX system at the terminal 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 the terminal is in the roaming place, then the PDSN AAA that need pass through a plurality of visits ground could arrive the AAA of ownership place and accomplish verification process, and this process need expended than the time of growing; Therefore, caused the terminal after discharging the WiMAX Internet resources, core-network side is not also accomplished 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 as shown in Figure 3 has 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; At pre-registration stage (that is, the terminal was confirmed before target access gateway switches), initiate user's access authentication, authorization flow and tunnel by the terminal and set up flow process; If target access gateway is found the 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; The terminal is confirmed 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 explanation and explains 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 spirit that accompanying claims illustrates and scope, 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 the 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, and is as shown in Figure 4, comprises following processing (step S402-step S404):
Step S402; Confirmed before target access gateway switches that at the terminal target access gateway is confirmed terminal execution hand-off process, target access gateway can send first register requirement that carry 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 is used to indicate the mobile agent node to forbid at the tunnel transmitting data of binding with target access gateway.
In step S402, target access gateway can confirm that the 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 confirms that the 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, on the tunnel of binding with source access gateway, sends downlink data to source access gateway, and forbids on the tunnel of binding with target access gateway, sending downlink data to target access gateway.
Step S404 confirms that at the terminal after target access gateway switched, target access gateway received metadata cache message, with predetermined message notice mobile agent node at the tunnel transmitting data of binding with target access gateway.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 is used to notify the mobile agent node at the tunnel transmitting data of binding with target access gateway.
In step S404, confirm that at the terminal terminal need be carried out routing update and be connected foundation with target radio network node after target access gateway switches; After accomplishing routing update and connecting the operation of setting up; Target radio network node can be sent metadata cache message to target access gateway; After the metadata cache message that target access gateway receiving target wireless network node sends; Just can notify the mobile agent node at the tunnel transmitting data of binding with target access gateway with predetermined message; And the downlink data that sends through the tunnel of binding of buffer memory mobile agent node, target access gateway the target access network network eat dishes without rice or wine with Access Network link establishment success after, just can the downlink data of buffer memory be sent to the 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 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 confirm to set up in advance the HRPD session to get into 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, the IP tunnel foundation request of moving is sent to PDSN in the terminal, and application is set up and is moved IP tunnel;
Step 508, the mutual authentication information of PDSN and AAA is accomplished authentication and mandate that the terminal is inserted, and the address of HA is sent to PDSN; If the 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 confirm the 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 the WiMAX IAD with downlink data, and does not send data to PDSN;
Step 511, PDSN moves IP tunnel to terminal transmission HRPD and sets up request-reply, and notice tunnel, terminal is set up and is accomplished, and the IP at terminal is sent to the 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 confirm 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 PDSN (corresponding to the step S404 among Fig. 4) with downlink data;
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 with Access Network link establishment success after be handed down to the 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.
Can find out from Fig. 5 handling process; Through 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, and is 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 confirming whether the terminal is carrying out hand-off process, and particularly, determination module 1 can confirm that the 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 confirming 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, and first-class control sign is used to indicate the mobile agent node to forbid at the tunnel transmitting data of binding with target access gateway; 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 received metadata cache message, the notification module 4 that is connected to receiver module 3 just can notify the mobile agent node at the tunnel transmitting data of binding with target access gateway with predetermined message.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 is used to notify the mobile agent node at the tunnel transmitting data of binding with target access gateway.
In addition; Can further include in the IAD: binding module 5 is connected to determination module 1; Be used for confirming to carry out tunnel binding with the mobile agent node under the situation of terminal execution hand-off process at determination module 1, and; Do not receive at receiver module 3 under the situation of metadata cache message, forbid the tunnel transmitting data that the mobile agent node is bound in binding module 5; 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 the target access network network eat dishes without rice or wine with Access Network link establishment success after, the downlink data of cache module 6 buffer memorys is sent to the terminal.
Need to prove, under the situation that does not deviate from spirit that accompanying claims illustrates and scope, can carry out various changes and combination above-mentioned each module.
In sum; By means of technical scheme of the present invention; Through 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 accomplished as yet under the situation of authentication and tunnel switching, the 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; Guarantee the integrality of data, improved the speed of switching, effectively elevator system switching efficiency and performance.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, 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 the terminal and spans into the switching of gateway by source access gateway to target access gateway, it is characterized in that said method comprises:
Confirmed before said target access gateway switches at said terminal; Said target access gateway is confirmed said terminal execution hand-off process; And initiate to carry first register requirement of first-class control sign to the mobile agent node; To indicate said mobile agent node to carry out many tunnel binding, wherein, said first-class control sign is used to indicate said mobile agent node to forbid at the tunnel transmitting data of binding with said target access gateway;
Confirm that at said terminal after said target access gateway switched, said target access gateway received metadata cache message, and notify said mobile agent node at the tunnel transmitting data of binding with said target access gateway with predetermined message.
2. method according to claim 1 is characterized in that, said target access gateway confirms that said terminal comprises in the execution hand-off process:
Said target access gateway receives request from the target radio network node message that connects, and confirms that according to the connect indication message of carrying in the message of described request said terminal carrying out hand-off process.
3. method according to claim 1 is characterized in that, after said mobile agent node initiated to carry first register requirement of first-class control sign, said method also comprised at said target access gateway:
Said mobile agent node carries out many tunnel binding with source access gateway and said target access gateway respectively;
Said mobile agent node sends downlink data to said source access gateway on the tunnel of binding with said source access gateway, and forbids on the tunnel of binding with said target access gateway, sending said downlink data to said target access gateway.
4. method according to claim 1 is characterized in that, confirms that at said terminal said method also comprises after said target access gateway switches:
Said terminal is carried out routing update and is connected foundation with target radio network node;
Said target radio network node is sent said metadata cache message to said target access gateway.
5. method according to claim 1 is characterized in that, notifies said mobile agent node after the tunnel transmitting data of binding with said target access gateway with predetermined message at said target access gateway, and said method also comprises:
The downlink data that the said mobile agent node of said target access gateway buffer memory sends, and the target access network network eat dishes without rice or wine with Access Network link establishment success after, the said downlink data of buffer memory is sent to said terminal.
6. method according to claim 1 is characterized in that, said predetermined message comprises:
Second register requirement that carries second Flow Control sign that said target access gateway sends to said mobile agent node; Wherein, said second Flow Control sign is used to notify said mobile agent node at the tunnel transmitting data of binding with said target access gateway.
7. an IAD is characterized in that, said IAD comprises:
Determination module is used for confirming whether the terminal is carrying out hand-off process;
First sending module; Be used for confirming under the situation of said terminal execution hand-off process at said determination module; Initiate to carry first register requirement of first-class control sign to the mobile agent node; Wherein, said first register requirement is used to indicate said mobile agent node to carry out many tunnel binding, and said first-class control sign is used to indicate said mobile agent node to forbid at the tunnel transmitting data of binding with target access gateway;
Receiver module is used for the metadata cache message that the receiving target wireless network node sends;
Notification module is used for after said receiver module receives said metadata cache message, notifies said mobile agent node at the tunnel transmitting data of binding with said target access gateway with predetermined message.
8. IAD according to claim 7 is characterized in that, said determination module is further used for:
Confirm that according to the indication message of target radio network node in the request that said target access gateway sends connects message said terminal is in the execution hand-off process.
9. IAD according to claim 7 is characterized in that, said IAD further comprises:
Binding module is used for carrying out tunnel binding with said mobile agent node;
Cache module is used for the downlink data that the said mobile agent node of buffer memory sends;
Issue module, be used for the target access network network eat dishes without rice or wine with Access Network link establishment success after, the said downlink data of buffer memory is sent to said terminal.
10. IAD according to claim 7; It is characterized in that; Said predetermined message comprises: second register requirement that carries second Flow Control sign that said target access gateway sends to said mobile agent node; Wherein, said second Flow Control sign is used to notify said mobile agent node at the tunnel transmitting data of binding with said target access gateway.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008101847880A CN101772105B (en) | 2008-12-29 | 2008-12-29 | Switching method and access gateway |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008101847880A CN101772105B (en) | 2008-12-29 | 2008-12-29 | Switching method and access gateway |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101772105A CN101772105A (en) | 2010-07-07 |
CN101772105B true CN101772105B (en) | 2012-06-06 |
Family
ID=42504601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2008101847880A Expired - Fee Related CN101772105B (en) | 2008-12-29 | 2008-12-29 | Switching method and access gateway |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101772105B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
CN112911661A (en) | 2016-07-07 | 2021-06-04 | 华为技术有限公司 | Method for establishing tunnel between local gateways and gateway |
CN113938840A (en) * | 2020-07-13 | 2022-01-14 | 华为技术有限公司 | Communication method and communication device |
CN112654071B (en) * | 2020-12-31 | 2023-10-24 | 广州技象科技有限公司 | Method, device, equipment and storage medium for transmitting downlink data based on Internet of things |
Citations (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 |
-
2008
- 2008-12-29 CN CN2008101847880A patent/CN101772105B/en not_active Expired - Fee Related
Patent Citations (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 |
Also Published As
Publication number | Publication date |
---|---|
CN101772105A (en) | 2010-07-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2158744B1 (en) | Method and apparatus for communication handoff | |
CN102804911B (en) | The network interconnection technology of packet is transmitted between source gateway and destination service gateway | |
EP2222117B1 (en) | Means and method for assisting handover of integrated radio access networks | |
US7970405B2 (en) | Method of transmitting data in handover between base stations in wireless communication system | |
JP5062601B2 (en) | HRPD signaling link establishment method | |
US20090052398A1 (en) | Method of performing a handover | |
US8391209B2 (en) | Fast handover method and system using network-based localized mobility management | |
WO2007013839A1 (en) | Means and methods for improving the handover characteristics of radio access networks | |
EP1983795B1 (en) | Method of performing vertical handover between different wireless networks | |
US8175066B2 (en) | Apparatus and method for providing packet data service using heterogeneous networks | |
WO2008106891A1 (en) | A method, communication system and network entity for handing over a group of nodes | |
CN114390618A (en) | Method for supporting switching | |
US20120201222A1 (en) | System and protocols for inter-mobility access gateway tunneling for fast handoff transition | |
WO2007052720A1 (en) | Communication device and communication method | |
CN100593929C (en) | A Mobile Handoff Method in Wireless Packet Network | |
CN102421152A (en) | Method and equipment for identifying bearer type | |
KR20060042522A (en) | Method for Providing Multicast Service According to Handoff of Source Node in Mobile Internet Protocol Communication System | |
CN101772105B (en) | Switching method and access gateway | |
CN101730170B (en) | Switching method and system | |
CN104521166A (en) | Method, device, and system for data transmission | |
EP2235983B1 (en) | Method, apparatus and computer program for handover from a first access point to a second access point | |
Dell'Uomo et al. | An all-IP solution for QoS mobility management and AAA in the 4G mobile networks | |
JP4570981B2 (en) | Mobile communication system and packet data transfer control method | |
KR20090020877A (en) | Network-based mobility management method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20171229 |
|
CF01 | Termination of patent right due to non-payment of annual fee |