CN101330751B - The method of releasing source network resource, gateway entity and the network equipment - Google Patents
The method of releasing source network resource, gateway entity and the network equipment Download PDFInfo
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- CN101330751B CN101330751B CN200710147343.0A CN200710147343A CN101330751B CN 101330751 B CN101330751 B CN 101330751B CN 200710147343 A CN200710147343 A CN 200710147343A CN 101330751 B CN101330751 B CN 101330751B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention discloses a kind of method of releasing source network resource, gateway entity and the network equipment.The method of described releasing source network resource comprises: judge whether the switching from source network to objective network completes; When judging that switching completes, destination network gateways entity sends resource release message to source network; What the described resource that reception returns from source network had discharged receives the response.The present invention can the function of source of release bearing resource in time, reaches the technique effect improving source network resource utilization.
Description
Technical field
The present invention relates to the communications field, particularly relate to the method for releasing source network resource, gateway entity and the network equipment.
Background technology
Evolution block core net network (EvolvedPacketCore, EPC) in wireless evolution network is wireless core network of future generation.Consult Fig. 1, evolution block core net network mainly comprises Mobility Management Entity (MobilityManagementEntity, MME) data gateway (PDNGateway, PDNGW) three logic functional block in the gateway (ServingGateway), between 3GPP (3rdGenerationPartnershipProject) interior different access systems and EPS between 3GPP connecting system and non-3 GPP access system.Described 3GPP is terminal is established to the IP connectivity of data gateway under Mobility Management Entity controls a kind of cordless communication network by gateway; And non-3 gpp is the IP connectivity that terminal is established to data gateway under border IAD controls, and border IAD and data gateway are a kind of cordless communication networks be directly connected by tunnel.
In evolution block core net network, Mobility Management Entity is responsible for the mobile management of chain of command, comprise user's context and mobile status management, distributing user temporary identifications, safety function etc., it corresponds to the control plane part of current universal mobile telecommunications system (UniversalMobileTelecommunicationsSystem, UMTS) internal system GPRS serving GPRS support node (SGSN); Gateway in the face of the access of 3GPP connecting system, is directly the user face anchor point between 3GPP inter Access System.Consult Fig. 2, under roaming scence, gateway can as local user face anchor point between non-3 GPP access system and 3GPP connecting system, and a user can only have a gateway in a period of time, and namely gateway may change; Data gateway is the user face anchor point in evolution grouping system (EPS) between 3GPP connecting system and non-3 GPP system, for user provides Packet Data Network (PacketDataNetwork, PDN) access, a user can have multiple data gateway simultaneously.Gateway and data gateway composition evolution grouping system gateway (EvolvedPacketSystemGW, EPSGW) in figure.
In existing protocol, be provided in the certain methods of carrying out network switching in evolution block core net network, above-mentioned switching can between reliable non-3 GPP and 3GPP, and between insincere non-3 gpp and 3GPP.Consult Fig. 3, be under non-roaming scence S2a and S5 based on the switching flow of proxy-mobile IP (PMIPv6):
Step 301: terminal completes carrying at 3GPP and sets up, and carries out the access of business datum by the carrying of setting up, and up-downgoing data transmit by being carried between terminal and data gateway.
Step 302: terminal finds reliable non-3 GPP IP connecting system, and initialization switches (HO);
Step 303: reliable non-3 GPP IP connecting system carries out layer 2 configuration process;
Step 304: carry out extended authentication agreement (ExtensibleAuthenticationProtocol, EAP) certification;
Step 305: trigger layer 3 adheres to process;
Step 306: send agent binding update information to data gateway, carry MN-NAI in described information, the parameters such as IP address;
Step 307: return the binding information carrying IP address;
Step 308: terminal is switched to non-3 gpp from 3GPP, completes carrying and sets up;
Step 309: layer 3 has adhered to.
Carrying out in the invention process, inventor finds that above-mentioned existing method of carrying out network switching in evolution block core net network at least exists following problem: do not have timely source of release bearing resource after having switched, cause the wasting of resources.
Reason is: network switches the switching between switching and heterogeneous network comprised between homogenous network.Switching between homogenous network, as the switching between 3GPP, has connection between two network-based control face entity Mobility Management Entity or GPRS serving GPRS support node.After terminal switch to objective network, objective network Mobility Management Entity or GPRS serving GPRS support node can carry out the release of resource by the Mobility Management Entity of source network or GPRS serving GPRS support node; But the switching of heterogeneous network, as the switching in above-mentioned Fig. 3 between 3GPP and non-3 gpp, more complicated than homogenous network.For the switching between heterogeneous network, between two network-based control face entities, there is no direct interface, after terminal is from source network successful switch to objective network, the carrying of source network is in idle state always, do not discharge timely, cause the waste of resource, reduce the service efficiency of resource.
Summary of the invention
The technical problem that embodiment of the present invention will solve is to provide a kind of method of releasing source network resource, gateway entity and the network equipment, can releasing source network resource timely and effectively, improves Internet usage efficiency.
A kind of method of releasing source network resource is provided, comprises: judge whether the switching from source network to objective network completes; When judging that switching completes, destination network gateways entity sends resource release message to source network.
A kind of method of releasing source network resource is provided, comprises: after being switched to objective network, the resource release message that source network receiving target network gateway entity is initiated; Source network discharges described resource after receiving described resource release message.
There is provided a kind of gateway entity, comprise judging unit, the first transmitting element and the first receiving element, described judging unit is for judging whether the switching from source network to objective network completes; Described first transmitting element is used for when described judging unit judges that described switching completes, and sends the resource release message of releasing source network resource to source network.
A kind of network equipment is provided, comprises the second receiving element and resource releasing unit, the resource release message that described second receiving element is initiated for receiving source network; Described resource releasing unit is used for the described resource discharging objective network after described second receiving element receives described message.
There is provided a kind of network equipment, comprise the 3rd receiving element and the second transmitting element, described 3rd receiving element is used for the resource release message that receiving target network is initiated; Described second transmitting element is used for after described 3rd receiving element receives described message, and trigger source network discharges described resource.
Above technical scheme can be found out, due to cannot the technological deficiency of source of release bearing resource in time after switching between network for prior art, specific aim is provided in the mechanism of receiveing the response that resource release message mutual between objective network and source network and resource have discharged, be in due course and suitable position, namely after being switched to objective network, the resource release operations of source network is initiated to by the destination network gateways entity after switching, the function of timely source of release bearing resource after switching between specific implementation network, reach the technique effect improving source network resource utilization.
Accompanying drawing explanation
Fig. 1 is the structural representation of evolvement network under the non-roaming scene of prior art;
Fig. 2 is the structural representation of evolvement network under prior art roaming scence;
Fig. 3 is prior art based on the switching flow figure between the 3GPP of PMIPv6 and reliable non-3 GPP;
Fig. 4 is the flow chart of method first execution mode of releasing source network resource of the present invention;
Fig. 5 is the flow chart of method second execution mode of releasing source network resource of the present invention;
Fig. 6 is the flow chart of method the 3rd execution mode of releasing source network resource of the present invention;
Fig. 7 is the flow chart of method the 4th execution mode of releasing source network resource of the present invention;
Fig. 8 is the flow chart of method the 5th execution mode of releasing source network resource of the present invention;
Fig. 9 is the flow chart of method the 6th execution mode of releasing source network resource of the present invention;
Figure 10 is the flow chart of method the 7th execution mode of releasing source network resource of the present invention;
Figure 11 is the flow chart of method the 8th execution mode of releasing source network resource of the present invention;
Figure 12 is the flow chart of method the 9th execution mode of releasing source network resource of the present invention;
Figure 13 is the theory diagram of gateway entity first execution mode of the present invention;
Figure 14 is the theory diagram of the network equipment first execution mode of the present invention;
Figure 15 is the theory diagram of the network equipment second execution mode of the present invention.
Embodiment
Embodiment of the present invention is to provide the multiple method for releasing source network resource after having switched between network, to improve the service efficiency of source network resource.The objective network of described switching can be 3GPP, mainly comprises data gateway, Mobility Management Entity, gateway etc.
The invention provides the method basic embodiment of releasing source network resource, comprise the steps:
Steps A: judge whether the switching from source network to objective network completes;
Step B: when judging that switching completes, destination network gateways entity sends resource release message to source network.
Above execution mode can be found out, due to cannot the technological deficiency of releasing source network resource in time after switching between network for prior art, specific aim is provided in resource release message mutual between objective network and source network and resource discharges mechanism of receiveing the response, be in due course and suitable position, namely complete after being switched to objective network, the resource release operations of source network is initiated to by the destination network gateways entity after switching, after specific implementation network switches, the function of timely releasing source network resource, reaches the technique effect improving source network resource utilization.
In stepb, after terminal switch to objective network, can be initiated to the resource release flow of source network gateway entity by the data gateway of objective network, the mode of initiation comprises:
1) data gateway directly sends resource release message to the gateway entity of source network, as sent message to gateway or evolution packet data gateway (EvolvedPacketDataGateway, ePDG) or untrusted 3GPP gateway entity etc.;
2) data gateway sends resource release message to the gateway entity of source network by aaa server/home subscriber server.
Described destination network gateways entity can also be gateway or Mobility Management Entity etc.
Switching between network can be switched to target 3GPP from source non-3 gpp, also can be switched to target non-3 gpp by source 3GPP.Described non-3 gpp comprises: believable non-3 gpp and incredible non-3 gpp.
Described source network gateway entity can be: Mobility Management Entity, gateway or non-3 gpp gateway entity.Described non-3 gpp gateway entity can comprise insincere non-3 gpp gateway entity, as evolution packet data gateway, or reliable non-3 GPP IAD etc.If 3GPP is UTRAN, then GPRS serving GPRS support node can realize the function of Mobility Management Entity.
The resource of described source network release can be bearing resource, described bearing resource can comprise wireless or not wireless bearing resource, also can comprise wireless and not wireless bearing resource, wireless and/or S1 (between base station and gateway) bearing resource etc. can also be comprised.
Described resource release message can be resource release request (ResourceReleaseRequest), location updating (UpdateLocation), canceling position (CancelLocation) or the new any message etc. defined, for directly or indirectly informing that source network carries out resource release operations; What described resource had discharged receives the response can be any message etc. that (ResourceReleaseRespone) is responded in resource release, canceling position responds (CancelLocationAck), location updating responds (UpdateLocationAck) or new definition.
Hereinafter, for ease of describing, location updating and canceling position breath are called resource release notification message, or are called first resource release notice, Secondary resource release notification message; In addition, sending resource release message to the resource release message in source network can be the Trigger message of initiating resource release flow, also can be the related news of requirement releasing resource, such as require the switching completion notice of releasing resource.
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously execution mode referring to accompanying drawing, the present invention is described in more detail.
In handoff procedure of the present invention the method execution mode of releasing source network resource be include but not limited to following several:
1) complete after from source 3GPP to the switching of target non-3 gpp in terminal, the data gateway of target non-3 gpp gateway that is direct and source 3GPP is mutual, the bearing resource of source of release 3GPP;
2) complete after from source 3GPP to the switching of target non-3 gpp in terminal, the data gateway of target non-3 gpp is by the aaa server of target non-3 gpp, the home subscriber server of source 3GPP, with the Mobility Management Entity of source 3GPP or GPRS serving GPRS support node mutual, the bearing resource of source of release 3GPP;
3) after the switching completed from source non-3 gpp to target 3GPP in terminal, the data gateway of target 3GPP directly with source non-3 gpp gateway entity alternately, the bearing resource of source of release non-3 gpp;
4) after the switching completed from source non-3 gpp to target 3GPP in terminal, the data gateway of target 3GPP by aaa server and source non-3 gpp gateway entity mutual, the bearing resource of source of release non-3 gpp;
5) complete from source non-3 gpp to target 3GPP after switching in terminal, the Mobility Management Entity of target 3GPP or GPRS serving GPRS support node send a message to source non-3 gpp gateway entity by home subscriber server and aaa server, require the bearing resource in release non-3 gpp;
6) under the interface roaming scence between gateway and data gateway, when in handoff procedure, gateway is not changed, after terminal completes the switching from source non-3 gpp to target 3GPP, the gateway of target 3GPP is direct and source non-3 gpp gateway entity is mutual, the bearing resource of source of release non-3 gpp;
7) under the interface roaming scence between gateway and data gateway, when in handoff procedure, gateway is not changed, after terminal completes the switching from source non-3 gpp to target 3GPP, the gateway of target 3GPP is mutual with source non-3 gpp gateway entity by AAA agency, the bearing resource of source of release non-3 gpp;
8) under the interface roaming scence between gateway and data gateway, when in handoff procedure, gateway occurs to change, after terminal completes the switching from source non-3 gpp to target 3GPP, the data gateway of target 3GPP by mutual with the gateway and source non-3 gpp gateway entity of source non-3 gpp, the bearing resource of source of release non-3 gpp;
9) complete after from source 3GPP to the switching of target non-3 gpp in terminal, the data gateway of target non-3 gpp sends and requires that the switching completion notice of releasing resource is to the gateway of source 3GPP, described gateway forwarding is described to be required the switching completion notice of releasing resource or rebuilds new carrying release to notify Mobility Management Entity or GRPS serving GPRS support node, is initiated the resource release flow of source network by described Mobility Management Entity or GPRS serving GPRS support node.
Below respectively the respective embodiments described above are described more specifically.
Consulting Fig. 4, is method first execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode completes after from source 3GPP to the switching of target non-3 gpp in terminal, and the data gateway of target non-3 gpp directly sends resource release message to the gateway of source 3GPP.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target non-3 gpp from source 3GPP, and this stage comprises the steps 401 and 402.
Step 401: terminal completes carrying at 3GPP and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 402: terminal is switched to non-3 gpp from 3GPP, completes carrying and sets up, carry out service data visitation by the carrying of setting up;
If the carrying of in roaming situations, setting up in non-3 gpp needs through gateway.
Present embodiment mainly comprises:
Step 403: judge whether the switching from source network to objective network completes;
Step 404: when judging that switching completes, destination network gateways entity sends resource release message to source network;
Being switched to target non-3 gpp from source 3GPP is switching between heterogeneous network.Be accomplished to the switching of target non-3 gpp in terminal after, data gateway sends resource release message and such as carries releasing request message to gateway, wireless and/or S1 carrying release flow process is initiated, with the wireless of source of release 3GPP and/or S1 bearing resource by described gateway.Following parameter is comprised: complete the home address (Homeofaddress, HOA) of the terminal of switching or/and customer equipment identification (UserID) in described carrying releasing request message.The resource needing release is determined by this parameter.
Source 3GPP receives the carrying releasing request that data gateway is sent.
Step 405: source network releasing bearing resource;
The gateway of source network initiates the wireless flow process carried with S1 of release, the radio bearer in release 3GPP and/or S1 carrying.
Step 406: what the gateway of source network returned that resource discharged receives the response as carrying release is receiveed the response to data gateway as described in objective network.
After releasing bearing, the gateway of source network returns carrying release and receives the response to data gateway, and notification data gateway carrying release completes.What the described data gateway of objective network received that the described resource that returns from source network discharged receives the response, and completes the release of source network bearing resource.
Consulting Fig. 5, is method second execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode completes after from source 3GPP to the switching of target non-3 gpp in terminal, and the data gateway of target non-3 gpp sends resource release message to the Mobility Management Entity of source 3GPP by aaa server and home subscriber server.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target non-3 gpp from source 3GPP, and this stage comprises the steps 501 and 502.
Step 501: terminal completes carrying at 3GPP and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 502: terminal is switched to non-3 gpp from 3GPP, completes carrying and sets up, carry out service data visitation by the carrying of setting up;
If the carrying of in roaming situations, setting up in non-3 gpp needs through gateway.
Present embodiment mainly comprises:
Step 503: judge whether the switching from source network to objective network completes;
Step 504: when judging that switching completes, destination network gateways entity sends resource release message to source network;
Being switched to target non-3 gpp from source 3GPP is switching between heterogeneous network.After the switching that terminal completes in non-3 gpp, gateway entity such as the data gateway of objective network sends resource release message if carrying releasing request is to aaa server/home subscriber server.
If aaa server and home subscriber server are not unified, then aaa server sends resource release message if resource release notification message is to home subscriber server.Following parameter is comprised: home address is or/and customer equipment identification in described resource release message.The resource needing release is determined by this parameter.
Step 505: home subscriber server sends another carrying release notification message to the Mobility Management Entity of source 3GPP or GPRS serving GPRS support node;
Described home subscriber server sends another carrying release and notify Mobility Management Entity or the GPRS serving GPRS support node of source 3GPP, initiates wireless and/or S1 carry and discharge flow process with the wireless of source of release 3GPP and/or S1 bearing resource by described Mobility Management Entity or GPRS serving GPRS support node.Described carrying notification message can be carry home address or/and the existing canceling position CancelLocation message of customer equipment identification, also can be the message of new definition.
The Mobility Management Entity of source 3GPP receives the carrying releasing request that data gateway is sent.
Step 506: source network releasing bearing resource;
The Mobility Management Entity of source network initiates wireless and/or S1 carrying release flow process, corresponding radio bearer and/or S1 carrying in release 3GPP, and this carrying release flow process is described later in detail in existing protocol.
Step 507: Mobility Management Entity returns the home subscriber server of receiveing the response that resource has discharged.
What described resource had discharged receives the response can be existing canceling position response CancelLocationAck message, also can be the message of new definition.
Step 508: home subscriber server/aaa server returns the data gateway of the objective network of receiveing the response that resource has discharged, notification data gateway carrying release completes; What described data gateway reception had discharged from the described resource that source network returns receives the response.
If home subscriber server and aaa server are not unified, then need the aaa server of receiveing the response that home subscriber server transmission resource has discharged, aaa server sends the described data gateway of the objective network of receiveing the response that another resource has discharged.
Consulting Fig. 6, is method the 3rd execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode is under non-roaming or S2 interface roaming scence, after terminal is switched to target 3GPP from source non-3 gpp, directly sends resource release message to source non-3 gpp by the data gateway of target 3GPP.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target 3GPP from source non-3 gpp, and this stage comprises the steps 601 and 602.
Step 601: terminal completes carrying in non-3 gpp and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 602: terminal is switched to 3GPP from non-3 gpp, completes carrying and sets up, carry out service data visitation by the carrying of setting up;
Present embodiment mainly comprises:
Step 603: judge whether the switching from source network to objective network completes;
Step 604: when judging that switching completes, destination network gateways entity sends resource release message to source network, the resource release message that source network receiving target network gateway entity is initiated;
Be accomplished to the switching of target 3GPP in terminal after, the gateway entity of target 3GPP sends resource release message if carrying releasing request message is to the gateway entity of source non-3 gpp as data gateway, is discharged the wireless and/or non-3 gpp relevant bearer resource in the non-3 gpp of described source by source non-3 gpp carrying release flow process;
The carrying releasing request of the described data gateway initiation of the gateway entity receiving target 3GPP of source non-3 gpp.
Step 605: source network releasing bearing resource;
The bearing resource that source non-3 gpp release is wireless and/or non-3 gpp is relevant, the technology that non-3 gpp can be used to specify discharges.
Step 606: what source network returned that resource discharged receives the response as carrying release is receiveed the response to data gateway as described in objective network, completes the release of source network bearing resource;
The gateway entity of source non-3 gpp sends carrying release and receives the response to the data gateway of objective network, and the carrying of notification data gateway has discharged.
Consulting Fig. 7, is method the 4th execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode is under non-roaming or S2 interface roaming scence, after terminal is switched to target 3GPP from source non-3 gpp, sends resource release message to source non-3 gpp by the data gateway of target 3GPP by aaa server.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target 3GPP from source non-3 gpp, and this stage comprises the steps 701 and 702.
Step 701: terminal completes carrying in non-3 gpp and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 702: terminal is switched to 3GPP from non-3 gpp, completes carrying and sets up, carry out service data visitation by the carrying of setting up;
Present embodiment mainly comprises:
Step 703: judge whether the switching from source network to objective network completes;
Step 704: when judging that switching completes, destination network gateways entity sends resource release message to source network, the resource release message that source network receiving target network gateway entity is initiated;
Be accomplished to the switching of target 3GPP in terminal after, the data gateway of target 3GPP send resource release message as carrying releasing request message to as described in the aaa server of source non-3 gpp.Following parameter is comprised: home address, or/and customer equipment identification, determines by this parameter the resource needing release in described carrying releasing request message.
Step 705:AAA server sends the gateway entity of carrying release notification message to source non-3 gpp;
Wireless and/or the non-3 gpp relevant bearer resource in described non-3 gpp is discharged by described source non-3 gpp carrying release flow process.
Step 706: source network releasing bearing resource;
The bearing resource that source non-3 gpp release is wireless and/or non-3 gpp is relevant, the technology that non-3 gpp can be used to specify discharges.
Following steps 707 and 708 be source network return that resource discharged receive the response to the described data gateway of target 3GPP, the process completing the release of source network bearing resource:
Step 707: what the gateway entity of source non-3 gpp returned that resource discharged receive the response as carrying release is receiveed the response aaa server;
Step 708:AAA server returns the data gateway of the target 3GPP of receiveing the response that resource has discharged, and notifies that described data gateway carrying release completes.
Consulting Fig. 8, is method the 5th execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode completes from source non-3 gpp to target 3GPP after switching in terminal, Mobility Management Entity or GPRS serving GPRS support node send resource release message to the gateway entity of source non-3 gpp by home subscriber server and aaa server, require the bearing resource in source of release non-3 gpp.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target 3GPP from source non-3 gpp, and this stage comprises the steps 801 and 802.
Step 801: terminal completes carrying in non-3 gpp and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 802: terminal is switched to target 3GPP from source non-3 gpp, completes carrying and sets up, carry out service data visitation by the carrying of setting up;
Present embodiment mainly comprises:
Step 803: judge whether the switching from source network to objective network completes;
Step 804: when judging that switching completes, destination network gateways entity sends resource release message to source network;
It is situation about integrating for aaa server and home subscriber server, when judging that switching completes, the Mobility Management Entity of target 3GPP sends resource release and notifies aaa server/home subscriber server, comprise following parameter in the notification: home address, or/and customer equipment identification, determines by this parameter the resource needing release.Described resource release notice can be existing location updating UpdateLocation message, also can be the message of new definition.
For the situation that aaa server is separated with home subscriber server, then when judging that switching completes, the Mobility Management Entity of target 3GPP sends resource release and notifies home subscriber server.
Step 805: this step is optional, if home subscriber server and aaa server are the equipment integrated, does not need this step.If do not unified, then home subscriber server sends the release of another resource after receiving described resource release notice and notifies aaa server.The resource release notice that described home subscriber server sends can be existing canceling position CancelLocation message, also can be the message of new definition.And what described home subscriber server received can be the same or different with the resource release notice sent.
Step 806:AAA server sends resource release message if resource release request ResourceReleaseRequest is to the gateway entity of source non-3 gpp, requires the resource of source of release non-3 gpp.This Resource Release Request message can be existing message, also can be the message of new definition.
Step 807: source network releasing bearing resource;
The bearing resource that source non-3 gpp release is wireless and/or non-3 gpp is relevant, the technology that non-3 gpp can be used to specify discharges.
Following steps 808 ~ 810 are receiveing the response of receiving that the described resource that returns from source network discharged:
Step 808: if home subscriber server and aaa server unification, after completing resource release, the gateway entity of source non-3 gpp returns response ResourceReleaseResponse message that resource discharged to aaa server/home subscriber server.
If home subscriber server is separated with aaa server, after completing resource release, the gateway entity of source non-3 gpp returns response ResourceReleaseResponse message that resource discharged to aaa server.
What this resource had discharged receives the response can be existing message, also can be the message of new definition.
Step 809: this step is optional step, if home subscriber server and aaa server unification, then do not need this step, if home subscriber server is separated with aaa server, then aaa server returns response CancelLocationAck message that resource discharged to home subscriber server.This message can be existing message, also can be the message of new definition.
Step 810: home subscriber server returns response UpdateLocationAck message that resource discharged to the Mobility Management Entity of target 3GPP, and notice Mobility Management Entity source non-3 gpp completes the release of resource.
The resource returned described in the described Mobility Management Entity reception of target 3GPP has discharged receives the response.
Consulting Fig. 9, is method the 6th execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode is under S8 interface (roaming interface between data gateway and gateway) roaming scence, namely under the interface roaming scence between gateway and data gateway, after terminal is switched to target 3GPP from source non-3 gpp, when visited place gateway does not occur to change, send the gateway entity of resource release message to described 3GPP to discharge the bearing resource of described wireless and/or not wireless by described visited place gateway.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target 3GPP from source non-3 gpp, and this stage comprises the steps 901 and 902.
Step 901: terminal completes carrying in non-3 gpp and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 902: terminal is switched to target 3GPP from source non-3 gpp, completes carrying and sets up, carry out service data visitation by the carrying of setting up; In handoff procedure, visited place gateway remains unchanged, after namely switching, and the visited place gateway that 3GPP access is identical with source non-3 gpp;
Present embodiment mainly comprises:
Step 903: judge whether the switching from source network to objective network completes;
Step 904: when judging that switching completes, destination network gateways entity sends resource release message to source network;
Be accomplished to the switching of 3GPP in terminal after, the visited place gateway of target 3GPP sends resource release message if carrying releasing request message is to the gateway entity of source non-3 gpp; Following parameter is comprised: home address, or/and customer equipment identification, determines by this parameter the wireless and/or not wireless resource needing release in described carrying releasing request message;
The gateway entity of source non-3 gpp receives the resource release message of described visited place gateway initiation.
Step 904: source network releasing bearing resource;
The bearing resource that source non-3 gpp release is wireless and/or non-3 gpp is relevant, the technology that non-3 gpp can be used to specify discharges.
Step 905: what source network returned that resource discharged receive the response as carrying release receive the response to as described in visited place gateway, complete the release of source network bearing resource.
The described gateway entity of source non-3 gpp returns carrying release and receives the response, and notice visited place gateway has completed carrying release.The resource returned described in visited place gateway receives has discharged receives the response.
Consulting Figure 10, is method the 7th execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode is under S8 interface roaming scence, namely under the interface roaming scence between gateway and data gateway, after terminal is switched to target 3GPP from source non-3 gpp, when visited place gateway does not occur to change, by described visited place gateway by AAA act on behalf of send resource release message as carrying releasing request to as described in the gateway entity of 3GPP with bearing resource that is wireless as described in discharging and/or not wireless.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target 3GPP from source non-3 gpp, and this stage comprises the steps 1001 and 1002.
Step 1001: terminal completes carrying in non-3 gpp and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 1002: terminal is switched to target 3GPP from source non-3 gpp, completes carrying and sets up, carry out service data visitation by the carrying of setting up; In handoff procedure, visited place gateway remains unchanged, after namely switching, and the visited place gateway that 3GPP access is identical with source non-3 gpp;
Present embodiment mainly comprises:
Step 1003: judge whether the switching from source network to objective network completes;
Step 1004: when judging that switching completes, destination network gateways entity sends resource release message to source network;
Be accomplished to the switching of 3GPP in terminal after, the visited place gateway of target 3GPP is initiated resource release message such as carrying releasing request and is acted on behalf of to visited network AAA.Comprise following parameter in the message: home address, or/and customer equipment identification, determines by this parameter the resource needing release;
Step 1005:AAA agency sends resource release notification message to source non-3 gpp gateway entity;
The gateway entity of source non-3 gpp receives the carrying releasing request of described visited place gateway initiation.
Step 1006: source network releasing bearing resource;
The bearing resource that source non-3 gpp release is wireless and/or non-3 gpp is relevant, the technology that non-3 gpp can be used to specify discharges.
Following steps 1007 and 1008 are source network receiveing the response to the described visited place gateway of target 3GPP, the process completing the release of source network bearing resource of returning that resource discharged.
Step 1007: what source non-3 gpp gateway entity returned that resource discharged receive the response as carrying release receive the response to as described in AAA act on behalf of;
Step 1008: what described another resource of AAA agency transmission had discharged receives the response to visited place gateway, notifies that described visited place service gateway bearing has discharged.
Consulting Figure 11, is method the 8th execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode is under S8 interface roaming scence, namely under the interface roaming scence between gateway and data gateway, after terminal is switched to target 3GPP from source non-3 gpp, when visited place gateway occurs to change, by data gateway send resource release message as carrying releasing request to as described in the gateway of source non-3 gpp, described gateway sends another carrying releasing request to the gateway entity of described non-3 gpp, to discharge the bearing resource of described wireless and/or not wireless.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target 3GPP from source non-3 gpp, and this stage comprises the steps 1101 and 1102.
Step 1101: terminal completes carrying in non-3 gpp and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 1102: terminal is switched to target 3GPP from source non-3 gpp, completes carrying and sets up, carry out service data visitation by the carrying of setting up; In handoff procedure, 3GPP is from the access of new visited place gateway, and after namely switching, visited place gateway is changed;
Present embodiment mainly comprises:
Step 1103: judge whether the switching from source network to objective network completes;
Step 1104: when judging that switching completes, destination network gateways entity sends resource release message to source network;
Be accomplished to the switching of 3GPP in terminal after, the data gateway of target 3GPP sends resource release message if carrying releasing request message is to the visited place gateway of source non-3 GPP access, following parameter is comprised: home address, or/and customer equipment identification, determines by this parameter the resource needing release in described carrying releasing request message;
Step 1105: described visited place gateway sends another carrying release message to the gateway entity of source non-3 gpp;
The gateway entity of source non-3 gpp receives the carrying releasing request of described data gateway initiation.
Step 1106: source network releasing bearing resource;
The bearing resource that source non-3 gpp release is wireless and/or non-3 gpp is relevant, the technology that non-3 gpp can be used to specify discharges.
Following steps 1107 and 1108 be source network return carrying release receive the response to the data gateway of described objective network, the process completing the release of source network bearing resource.
Step 1107: what the described gateway entity of source non-3 gpp sent that resource discharge receive the response receives the response to visited place gateway as carried release.
Step 1108: visited place gateway returns carrying release and receives the response to the data gateway of source network.
Consulting Figure 12, is method the 9th execution mode of releasing source network resource in handoff procedure of the present invention.This execution mode completes after from source 3GPP to the switching of target non-3 gpp in terminal, and the data gateway of target non-3 gpp sends by gateway the Mobility Management Entity that carrying release informs source 3GPP.
In the present embodiment, first the prerequisite of terminal source of release bearing resource is: be switched to target non-3 gpp from source 3GPP, and this stage comprises the steps 1201 and 1202.
Step 1201: terminal completes carrying at 3GPP and sets up, and, by the carrying of setting up, the access of terminal carrying out service data, up-downgoing data transmit by being carried between terminal and data gateway;
Step 1202: terminal is switched to non-3 gpp from 3GPP, completes carrying and sets up, carry out service data visitation by the carrying of setting up;
If the carrying of in roaming situations, setting up in non-3 gpp may need through gateway.
Present embodiment mainly comprises:
Step 1203: judge whether the switching from source network to objective network completes;
Step 1204: when judging that switching completes, objective network data gateway entity is sent by gateway and requires that the switching completion notice of releasing resource (carrying IP address) is to Mobility Management Entity, this message in process of transmitting through two sections of networks, one section of network is between objective network data gateway and gateway, and another section of network is between gateway and Mobility Management Entity.These two sections of message can based on identical or different agreement, can be carry the switching completion notice requiring releasing resource to identify, also can be simple switching completion notice, according to the agreement reserved in advance between described objective network after Mobility Management Entity receives this message, initiate resource release flow.Described gateway can transparent data gateway send message.Also the message that data gateway sends can be processed, re-construct new message and send to Mobility Management Entity;
Step 1205: Mobility Management Entity sends deleting bearing request message (carrying Tunnel End Point Identifier TEID, TeardownInd parameter) and, to gateway and data gateway, requires deleting bearing.This step comprises Mobility Management Entity transmission deleting bearing request message and sends deleting bearing request message to data gateway two sections to gateway and gateway.Two sections of message can based on different agreements, and gateway also according to the message received, can re-construct new message and be sent to data gateway.Wherein, TeardownInd is optional parameters, if need disposable deletion therewith TEID there are all carryings of identical IP address, then needing TeardownInd set is 1;
Step 1206: data gateway and gateway return deleting bearing and receive the response to Mobility Management Entity, notifies that its carrying release completes.This step also can comprise two sections of message, and these two sections of message also can construct based on different agreements;
Step 1207: Mobility Management Entity sends carrying release message to NodeB, requires that NodeB discharges the related resource about this terminal;
Step 1208: described Mobility Management Entity or GPRS serving GPRS support node return through described gateway switching that described expression resource discharged and complete and receive the response, notification data gateway resource has discharged, and the switching returned described in the described data gateway reception of objective network completes receives the response.This step is optional step, if the deleting bearing message of data gateway above knows that Mobility Management Entity has initiated the flow process of releasing bearing, this step can be omitted.
In addition, carry out resource release from the angle of source network, the present invention also provides method the tenth execution mode of releasing source network resource, comprises the following steps:
1) after being switched to objective network, the resource release message that source network receiving target network gateway entity is initiated;
2) source network discharges described resource after receiving described resource release message.
In step 2) after, can further include:
What source network returned that described release completes receives the response to described destination network gateways entity.
Above execution mode is the method for source of release bearing resource under corresponding different scene, but the method for source of release bearing resource is not limited to above citing.Such as, the flow process of described resource release is carried out after can switching between non-3 gpp and non-3 gpp.
One of ordinary skill in the art will appreciate that all or part of step realized in the method execution mode of releasing source network resource in above-mentioned handoff procedure is that the hardware that can carry out instruction relevant by program has come, described program can be stored in computer read/write memory medium, this program, when performing, can comprise the content of each execution mode of method of releasing source network resource in aforementioned handoff procedure of the present invention.Here the alleged storage medium obtained, as: ROM/RAM, magnetic disc, CD etc.
Consult Figure 13, the present invention also provides gateway entity first execution mode.Described gateway entity comprises:
Judging unit 1310, for judging whether the switching from source network to objective network completes;
First transmitting element 1320, for when described judging unit judges that described switching completes, sends the resource release message of releasing source network resource to source network.
Above gateway entity of the present invention first execution mode can be found out, due to cannot the technological deficiency of source of release bearing resource in time after switching between network for prior art, pointedly present embodiment gateway entity is proposed, judging unit 1310 is adopted to judge whether that internetwork switching completes, when judging that switching completes, the mechanism of receiveing the response adopting the first transmitting element 1320 and the first receiving element 1330 to be provided in resource release message mutual between objective network and source network and resource respectively to have discharged, be in due course and suitable position, namely after being switched to objective network, resource release message is initiated by the first transmitting element 1320 of gateway entity, the function of source of release bearing resource after specific implementation network switches, reach the technique effect improving source network bearing resource service efficiency.
Also consult Figure 13, in other embodiments, described gateway entity also comprises the first receiving element 1330, receives the response for receiving the carrying release returned after source network completes resource release.
In other embodiments, described gateway entity is data gateway, and described first transmitting element can be specifically for:
Sending the gateway of described resource release request to source 3GPP, initiating the resource release flow of described source network for triggering described gateway; Or
Send the aaa server of described resource release request to source 3GPP, trigger home subscriber server notice Mobility Management Entity or GPRS serving GPRS support node initiation source network carrying release flow process through described aaa server; Or
Send the aaa server/home subscriber server of described resource release request to source 3GPP, trigger Mobility Management Entity or GPRS serving GPRS support node initiation source network carrying release flow process through described aaa server/home subscriber server; Or
Send and require that the switching completion notice of releasing resource is to the gateway of source network, notify that its switching completion notice forwarding described switching completion notice or rebuild new requirement releasing resource is to Mobility Management Entity or GRPS serving GPRS support node, initiates the resource release flow of source network by described Mobility Management Entity or GPRS serving GPRS support node;
Sending the gateway entity of described resource release request to source non-3 gpp, initiating described resource release flow for triggering described gateway entity; Or
Send resource release request to aaa server, the gateway entity through described aaa server trigger source non-3 gpp initiates described resource release flow; Or
Send the gateway of first resource releasing request to source non-3 gpp, the gateway entity through described gateway trigger source non-3 gpp initiates described resource release flow.
Described gateway entity can also be Mobility Management Entity, and now described first transmitting element can be specifically for:
Send resource release and notify aaa server/home subscriber server, the gateway entity through described aaa server/home subscriber server trigger source non-3 gpp initiates described resource release flow; Or
Send first resource release and notify home subscriber server, through described home subscriber server notice aaa server, the gateway entity of trigger source non-3 gpp initiates described resource release flow.
Described gateway entity can also be gateway, and now described first transmitting element can be specifically for:
Send the gateway entity of resource release request to source non-3 gpp, for triggering described resource release flow; Or
Send first resource releasing request to AAA agency, the gateway entity through described AAA agent triggers source non-3 gpp initiates described resource release flow; Or
Send the gateway of first resource releasing request to source non-3 gpp, the gateway entity through described gateway trigger source non-3 gpp initiates described resource release flow.
Consult Figure 14, the present invention also provides the network equipment first execution mode, comprising:
Second receiving element 1410, for the resource release message that receiving target network is initiated;
Resource releasing unit 1420, for the described resource of source of release network after described second receiving element 1410 receives described message.
Above network of the present invention first execution mode can be found out, due to cannot the technological deficiency of source of release bearing resource in time after switching between network for prior art, pointedly the present embodiment network equipment is proposed, the mechanism of receiveing the response that resource release message and resource discharged is received at employing second receiving element 1410, be in due course after being namely switched to objective network, receive resource release message and adopt resource releasing unit 1420 to discharge described resource, the function of source of release bearing resource after specific implementation network switches, reach the technique effect improving source network bearing resource service efficiency.
The described network equipment can be gateway, Mobility Management Entity, GPRS serving GPRS support node, evolution packet data gateway or reliable non-3 GPP IAD.
Can further include response unit 1430, for complete resource release at described resource releasing unit 1420 after, return the source network of receiveing the response that resource discharged.
Consult Figure 15, the present invention also provides the network equipment second execution mode, comprising:
3rd receiving element 1510, for the resource release message that receiving target network is initiated;
Second transmitting element 1520, for after described 3rd receiving element 1510 receives described message, the described resource of release of trigger target network.
The described network equipment can be gateway, aaa server/home subscriber server, GPRS serving GPRS support node or AAA agency.
The carrying releasing request that after above-mentioned network equipment execution mode can switch between assisted network, objective network is initiated, can source of release carrying related resource, improves the service efficiency of source network bearing resource, reduces the waste of resource.
What deserves to be explained is, judging unit 1310, first transmitting element 1320 in aforementioned gateway entity first execution mode of the present invention and the first receiving element 1330 can be integrated in a processing module; In like manner, each unit in the aforementioned network equipment of the present invention first execution mode also can be integrated in a processing module.
Also what deserves to be explained is, the gateway entity in embodiment of the present invention or each unit of the network equipment both can adopt the form of hardware to realize, and can the part of software simulating the form of software function module also can be adopted to realize.Correspondingly, embodiment of the present invention both can as independently production marketing or use, the part of software simulating also can be stored in a computer read/write memory medium and carry out selling or using.
To sum up, the present invention at least can produce following technique effect:
1, switch after objective network from source network in terminal, the release of source network bearing resource can be carried out in time, improve the service efficiency of source network bearing resource, reduce the waste of resource;
2, the method for source of release carrying can be applied in the scene switched between various network, and operability is good;
3, utilize original system/agreement to increase the step/device of source of release carrying, cost can be controlled in lower scope.
Be described in detail by specific embodiment the method for releasing source network resource in a kind of handoff procedure provided by the present invention, gateway entity and the network equipment above, the explanation of above embodiment just understands method of the present invention and thought thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. a method for releasing source network resource, is characterized in that, comprising:
The data gateway PDNGW of objective network judges whether complete from source network to the switching of described objective network;
When judging that switching completes, the described PDNGW of described objective network sends the gateway ServingGW of resource release request to source network, is initiated the resource release flow of source network by described ServingGW;
The described PDNGW reception of described objective network has discharged from the described resource that described ServingGW returns receives the response;
Described source network is terminal is established to the IP connectivity of data gateway under Mobility Management Entity controls 3rd Generation Partnership Project 3GPP network by gateway, described objective network is the IP connectivity that terminal is established to data gateway under border IAD controls, and border IAD and data gateway are the non-3 GPP network be connected by tunnel.
2. a method for releasing source network resource, is characterized in that, comprising:
The data gateway PDNGW of objective network judges whether complete from source network to the switching of described objective network;
When judging that switching completes, the described PDNGW of described objective network sends the gateway entity of resource release request to described source network, initiates resource release flow by described gateway entity;
What the described PDNGW of objective network received that the described resource that returns from the described gateway entity of source network discharged receives the response;
Described objective network is terminal is established to the IP connectivity of data gateway under Mobility Management Entity controls 3rd Generation Partnership Project 3GPP network by gateway, described source network is the IP connectivity that terminal is established to data gateway under border IAD controls, and border IAD and data gateway are the non-3 GPP network be connected by tunnel.
3. a method for releasing source network resource, is characterized in that, comprising:
The data gateway PDNGW of objective network judges whether complete from source network to the switching of described objective network;
When the gateway ServingGW of objective network described in handoff procedure occurs to change, when judging that switching completes, the data gateway PDNGW of described objective network sends the ServingGW of first resource releasing request to described objective network, the ServingGW of described objective network sends the gateway entity of Secondary resource releasing request to source network, initiates resource release flow by the described gateway entity of source network;
What the ServingGW of described objective network received that the described resource that returns from the described gateway entity of source network discharged receives the response;
Described objective network is terminal is established to the IP connectivity of data gateway under Mobility Management Entity controls 3rd Generation Partnership Project 3GPP network by gateway, described source network is the IP connectivity that terminal is established to data gateway under border IAD controls, and border IAD and data gateway are the non-3 GPP network be connected by tunnel.
4. a data gateway, is characterized in that, comprising:
Judging unit, for judging whether the switching from source network to objective network completes;
First transmitting element, for when described judging unit judges that described switching completes, sending the gateway that resource release notifies source network, initiating the resource release flow of described source network for triggering described gateway;
First receiving element, receives the response for receiving the carrying release returned after source network completes resource release;
Wherein, described source network is terminal is established to the IP connectivity of data gateway under Mobility Management Entity controls 3rd Generation Partnership Project 3GPP network by gateway, described objective network is the IP connectivity that terminal is established to data gateway under border IAD controls, and border IAD and data gateway are the non-3 GPP network be connected by tunnel.
5. a data gateway, is characterized in that, comprising:
Judging unit, for judging whether the switching from source network to objective network completes;
First transmitting element, for when described judging unit judges that described switching completes,
Sending the gateway entity of first resource releasing request to source network, initiating resource release flow for triggering described gateway entity;
First receiving element, receives the response for receiving the carrying release returned after source network completes resource release;
Wherein, described objective network is terminal is established to the IP connectivity of data gateway under Mobility Management Entity controls 3rd Generation Partnership Project 3GPP network by gateway, described source network is the IP connectivity that terminal is established to data gateway under border IAD controls, and border IAD and data gateway are the non-3 GPP network be connected by tunnel.
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| CN201510757833.7A CN105307222B (en) | 2007-06-19 | 2007-08-21 | Method, gateway entity and the network equipment of releasing source network resource |
| CN200710147343.0A CN101330751B (en) | 2007-06-19 | 2007-08-21 | The method of releasing source network resource, gateway entity and the network equipment |
| PCT/CN2008/071321 WO2008154856A1 (en) | 2007-06-19 | 2008-06-16 | Method, gateway entity and network device for releasing network resources |
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| CN200710111962.4 | 2007-06-19 | ||
| CN200710111962 | 2007-06-19 | ||
| CN200710147343.0A CN101330751B (en) | 2007-06-19 | 2007-08-21 | The method of releasing source network resource, gateway entity and the network equipment |
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| CN101472312B (en) * | 2008-01-31 | 2010-07-07 | 华为技术有限公司 | Control method and communication system for releasing resource as well as relevant equipment |
| US8086713B2 (en) * | 2009-01-28 | 2011-12-27 | Juniper Networks, Inc. | Determining a subscriber device has failed gracelessly without issuing a DHCP release message and automatically releasing resources reserved for the subscriber device within a broadband network upon determining that another subscriber device requesting the reservation of a network address has the same context information as the failed subscriber device |
| CN101932058A (en) * | 2009-06-19 | 2010-12-29 | 华为技术有限公司 | Method for releasing bearing resource and equipment thereof |
| CN102413584B (en) * | 2010-09-20 | 2015-01-28 | 电信科学技术研究院 | Method and equipment for managing PDN (public data network) connection |
| CN102413562B (en) * | 2010-09-20 | 2015-01-14 | 电信科学技术研究院 | Management method and equipment of PDN (Packet Data Network) connection |
| US20140071942A1 (en) * | 2012-09-11 | 2014-03-13 | Acer Incorporated | Apparatuses, systems, and methods for offloading data traffic |
| CN103796300A (en) * | 2012-10-29 | 2014-05-14 | 中兴通讯股份有限公司 | Terminal peripheral logout method and device in machine type communication system and gateway |
| WO2023143270A1 (en) * | 2022-01-29 | 2023-08-03 | 华为技术有限公司 | Communication method and apparatus |
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| CN1319392C (en) * | 2003-07-25 | 2007-05-30 | 华为技术有限公司 | A method of information transmission during relocation cancellation |
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| CN1319392C (en) * | 2003-07-25 | 2007-05-30 | 华为技术有限公司 | A method of information transmission during relocation cancellation |
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| CN101330751A (en) | 2008-12-24 |
| CN105307222B (en) | 2019-10-22 |
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