CN102378358B - A kind ofly realize multi-link framework and method - Google Patents
A kind ofly realize multi-link framework and method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
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Abstract
The invention discloses and a kind ofly realize multi-link framework and method, comprise multi-link user terminal (MUE) mutual with multi-link position/mobile management function (ML/MMF), complete the management of MUE access network, then ML/MMF reports the new link information of MUE to multi-link transmission controlling functions (MTCF), and MTCF or multi-link service control function (MSCF) send multi-link resource request to MPCF, MPCF carries out receiving decision-making to resource request, rule of generating strategy issuing.Realize multi-link framework and method by provided by the invention, perfect existingly multi-linkly realize framework, and provide and realize multi-link concrete methods of realizing based on the framework after improving.
Description
Technical field
The present invention relates to Multi net voting interconnection technique, espespecially a kind ofly realize multi-link framework and method.
Background technology
Multimode terminal can realize the seamless link between different types of radio access network, as the connection of honeycomb UMTS/EDGE/GPRS and IEEE 802.11 WLAN (wireless local area network) (WLAN).
WLAN can provide very high data rate in family among a small circle and hot spot region; And cellular network can provide higher flexibility and ubiquitous covering, but data rate is lower.If can in conjunction with both advantages, user can benefit from it.In the coverage of wlan access point, multimode terminal utilizes WLAN to carry out data access and VoIP application, can also use overlapping cellular network simultaneously, carry out audio call or media interviews.
Along with the development of network technology and user are to the demand of business, heterogeneous network, by supporting the multi-link ability of multimode terminal, makes terminal can be connected with multiple network and communicates simultaneously, carry one or more business.Because different networks connects, there is different characteristics and transmittability, thus meet the demand of user multi-service better.
Fig. 1 realizes multi-link function structure schematic diagram, as shown in Figure 1, multi-link in order to support, introduce multi-link transmission controlling functions (MTCF, Multi-Connection Transport ControlFunctions), for the available multi-link information of the multi-link terminal of responsible maintenance, office terminal is at the delivery flow rate of different access networks.MTCF comprises multi-link media control function entity (MMC-FE, Multi-connection Media Control-Functional Entity) and multi-link registering functional entity (MR-FE, Multi-connection Registration-Functional Entity), wherein
MMC-FE be mainly used in responsible UE multi-link under IP layer route; MR-FE is used for the available connection management being responsible for UE, safeguards available link information.
MTCF receives multi-link business information from multi-link service control function (MSCF, Multi-connection Service ControlFunction).
MTCF is to policy store functional entity (PS-FE, Policy Storage-Functional Entity) or resource accommodating control function (RACF, Resource and Admission Control Functions) send multi-link resource request message.Wherein, PS-FE is responsible for the formulation of multi-link strategy, such as bandwidth, expense, quality, safety etc.
RACF is the standard of the related resources call access control formulated by standardization department of international telecommunication union telecommunication (ITU-T, InternationalTelecommunication Union-Telecommunications standardization sector).In the Y.2111 standard that ITU-T issues, provide the functional framework of RACF, RACF is made up of two parts, policy deciding functional entity (PD-FE respectively, Policy DecisionFunctional Entity) and transfer resource controlling functions entity (TRC-FE, Transport Resource ControlFunctional Entity).Wherein, PD-FE policing rule Network Based, service control function (SCF, ServiceControl Functions) business information, the network attachment controlling functions (NACF that provide, NetworkAttachment Control Functions) the transport layer CAMEL-Subscription-Information that provides, and the Resource Availability result of decision that TRC-FE provides, make the last decision-making of resource and admission control.
NACF is the network attachment controlling functions formulated by ITU-T, and the major function provided comprises: for user terminal dynamically provides IP address and other configuration parameter; Subscription authentication is carried out before distributing IP address or in distributing IP address process; Based on user's inventory, network insertion is authorized; Based on user's inventory, access network is configured; Location management etc.
Fig. 2 realizes multi-link flow chart in prior art, mainly comprises the following steps:
Step 200:UE detects new access networks available, and is attached to this access network, after access authentication, obtains the IP address under this access network.
Step 201:UE sends to MTCF and connects update request message, in connection update request message, comprise new link information, as new IP address etc.
Step 202:MTCF registers this new link information, safeguards the available link information of UE.
Step 203:MTCF sends resource request message to PS-FE, to carry out service quality (QoS) policy control to the transfer resource in new access network, carries new link information in this resource request message.
After step 204:PS-FE receives resource request message, carry out strategic decision-making, formulate qos policy rule; PS-FE sends resource request message to TF, carries the qos policy rule that PS-FE formulates in this resource request message.
After step 205:TF installs corresponding strategies rule, send resource request response message to PS-FE.
Step 206:PS-FE sends resource request response message to MTCF.
The high UE of step 207:MTCF sends and connects update request response message.
Based in the multi-link framework of Fig. 1, MTCF comprises MMC-FE and MR-FE two functional entitys, and from its existing capability, MTCF cannot process mobile management, and can only do simple policy control; In addition, do not provide in the prior art PS-FE generate strategy rule time, to contract the specific implementation of inventory the need of using and how obtaining user.That is, lack in prior art for the definition of MSCF and the complete interaction flow implementation method with MTCF.
Summary of the invention
In view of this, main purpose of the present invention is that providing a kind of realizes multi-link framework and method, can provide perfect and multi-linkly realize framework, and realize multi-link concrete grammar.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind ofly realize multi-link framework, comprise multi-link transmission controlling functions MTCF, multi-link position/mobile management function ML/MMF, multi-link policy control functions MPCF, multi-link service control function MSCF, and for storing user subscription inventory multi-link user's inventory storehouse MUPD and the multi-link user terminal MUE of two or more access networks can be accessed; Wherein,
Described MTCF, for be responsible for multi-link under routing policy, multi-link information registering and maintenance; Multi-link resource request is sent to described MPCF;
Described ML/MMF, for location management and the mobile management of responsible user; Complete the management of described MUE access network, report the new link information of described MUE to described MTCF;
Described MPCF, for being responsible for multi-link policy control; According to described multi-link resource request, carry out receiving decision-making, rule of generating strategy issuing;
Described MSCF, is connected with described MTCF, described MPCF respectively, provides multi-link business information;
Wherein, described MPCF at least carries out receiving decision-making according to the user signing contract information in described MUPD, described multi-link business information to described multi-link resource request.
When described user signing contract information is obtained by described MPCF,
Described MPCF, the described user signing contract information that the described multi-link business information provided specifically for policing rule Network Based, described MTCF, described MUPD provide, and the Resource availability information that described MPCF collects, make resource and admission decision-making, rule of generating strategy.
When described user signing contract information is obtained by described MPCF,
Described MPCF, the user signing contract information that the multi-link business information provided specifically for policing rule Network Based, described MSCF, described MUPD provide, and the Resource availability information that described MPCF collects, make resource and admission decision-making, rule of generating strategy.
Described MUPD is connected with described MPCF and carries out information interaction; Or,
Described MUPD is connected with described MTCF and carries out information interaction; Or,
Described MUPD is arranged in described ML/MMF.
Realize a multi-link method, the method comprises:
MUE and ML/MMF is mutual, completes the management of MUE access network;
Described ML/MMF reports the new link information of described MUE to MTCF, and described MTCF sends described multi-link resource request to MPCF;
Described MPCF, according to described multi-link resource request, carries out receiving decision-making, rule of generating strategy issuing; Wherein, described MPCF at least carries out receiving decision-making according to the user signing contract information in MUPD, described multi-link business information to described multi-link resource request.
Described MUE and ML/MMF is mutual, and the management completing MUE access network comprises:
Described MUE detects new access networks available, and is attached to this access network; Described MUE and described ML/MMF is mutual, completes access authentication, and described ML/MMF gives described MUE distributing IP address.
Described ML/MMF reports new link information to comprise to described MTCF:
After described MTCF receives the new link information that described ML/MMF reports, the link information new to this is registered, and safeguards the available link information of described MUE; Described MTCF returns to described ML/MMF and new connection reports response message; Described new link information includes the IP address be newly assigned to.
Before described MTCF sends described multi-link resource request to described MPCF, the method also comprises:
Described MTCF inquires about multi-link business information to described MSCF, and described MSCF pushes described multi-link business information to MTCF.
Described MUPD is connected with described MPCF and carries out information interaction; Or described MUPD is arranged in described ML/MMF;
Described MTCF is to after described MPCF sends multi-link resource request, and MPCF carries out receiving decision-making to resource request, before rule of generating strategy, the method also comprises:
Described MPCF, by mutual with MUPD, obtains the signing inventory information of user;
Described MPCF, according to the signing inventory of described user, carries out authorization check to the described multi-link business information of user's request, and passes through authorization check.
Described MUPD is connected with described MTCF and carries out information interaction;
Before described MTCF sends multi-link resource request to MPCF, the method also comprises: described MTCF, by mutual with MUPD, obtains the signing inventory information of described user;
Described MTCF, according to the signing inventory of described user, carries out authorization check to the described multi-link business information of user's request, and passes through authorization check.
As can be seen from the technical scheme that the invention described above provides, comprise MUE and ML/MMF mutual, complete the management of MUE access network, then ML/MMF reports the new link information of MUE to MTCF, and MTCF or MSCF sends multi-link resource request to MPCF, MPCF carries out receiving decision-making to resource request, rule of generating strategy; Finally, MPCF and TF is mutual, is installed by the strategy rule downloading made to TF.Realize multi-link framework and method by provided by the invention, perfect existingly multi-linkly realize framework, and provide and realize multi-link concrete methods of realizing based on the framework after improving.
Accompanying drawing explanation
Fig. 1 realizes multi-link function structure schematic diagram;
Fig. 2 realizes multi-link flow chart in prior art;
Fig. 3 is the schematic diagram that the present invention realizes multi-link framework composition;
Fig. 4 is the schematic flow sheet that the present invention realizes the first embodiment of multi-link method;
Fig. 5 is the schematic flow sheet that the present invention realizes the second embodiment of multi-link method;
Fig. 6 is the schematic flow sheet that the present invention realizes the 3rd embodiment of multi-link method.
Embodiment
Fig. 3 is the schematic diagram that the present invention realizes multi-link framework composition, as shown in Figure 3, mainly comprises:
MTCF, be mainly used in responsible multi-link under routing policy, multi-link information registering and maintenance;
Multi-link position/mobile management function (ML/MMF), is mainly used in location management and the mobile management of responsible user.Particularly, ML/MMF completes IP address assignment, network insertion mandate, subscription authentication, access network configuration; The functions such as location management, positional information binding, handover decisions, switching controls are also further used for.
Multi-link policy control functions (MPCF), is mainly used in responsible multi-link policy control.Particularly, MPCF receives from the multi-link resource request message of MTCF, further, MPCF by the strategy rule downloading that makes to transfer function TF.
When the CAMEL-Subscription-Information of user is obtained by MPCF, MPCF, the user signing contract information that the link information provided specifically for policing rule Network Based, MTCF, MUPD provide, and the Resource availability information that MPCF collects, make resource and admission decision-making, rule of generating strategy;
When the CAMEL-Subscription-Information of user is obtained by MTCF, MPCF, the user signing contract information that the multi-link business information provided specifically for policing rule Network Based, MSCF, MUPD provide, and the Resource availability information that MPCF collects, make resource and admission decision-making, rule of generating strategy.
Multi-link user's inventory storehouse (MUPD), for storing user subscription inventory.Particularly, user's inventory of contracting comprises medium type, bandwidth, priority, access mark etc.
As shown in Figure 3, MUPD and MPCF is connected and carries out information interaction, also can be, MUPD and MTCF is connected and carries out information interaction, or MUPD is arranged in ML/MMF.The protection range that the specific implementation form of MUPD is not intended to limit the present invention.
Multi-link service control function (MSCF), is mainly used in the business continuance into multi-link session layer, provides multi-link business information.
Multi-link user terminal (MUE) is the user terminal (UE) that can access two or more access networks.
The operation principle that the present invention realizes multi-link framework is:
First, MUE and ML/MMF is mutual, completes the management of MUE access network.Here, the management of ML/MMF to MUE access network comprises user rs authentication, network address distribution, location management etc.
Then, ML/MMF reports the new link information of MUE to MTCF, and the new link information reported comprises new IP address and/or logic access mark and/or physics access mark etc.; Further, if MUE switches, ML/MMF also reports binding positions information to MTCF.
Then, MTCF sends multi-link resource request to MPCF, and MPCF carries out receiving decision-making to resource request, rule of generating strategy.
If MTCF does not carry business information over the new connection, so, also comprise MTCF and MSCF mutual, MTCF inquires about multi-link business information to MSCF, and MSCF pushes multi-link business information to MTCF; Wherein, multi-link business information comprises: type of service and/or service identification and/or priority and/or bandwidth and/or IP address and/or medium type and/or charge information etc.
If there is no the signing inventory of user in MTCF or MPCF, so, MTCF or MPCF is also further used for MUPD mutual, obtains the signing inventory information of user.
Finally, MPCF and TF is mutual, is installed by the strategy rule downloading made to TF.
Below in conjunction with embodiment, the inventive method is described in detail.
Fig. 4 is the schematic flow sheet that the present invention realizes the first embodiment of multi-link method, and in the first embodiment, MPCF and MUPD is mutual, as shown in Figure 4, comprises the following steps:
Step 400:MUE detects new access networks available, and is attached to this access network; MUE and ML/MMF is mutual, and complete access authentication, ML/MMF is to MUE distributing IP address.
Step 401:ML/MMF reports new link information to MTCF, and new link information comprises the IP address be newly assigned to, and also comprises logic access mark and/or physics access mark etc. further.
This step specifically comprises: after MTCF receives the new link information that ML/MMF reports, the link information new to this is registered, and safeguards the available link information of MUE, such as MTCF by user ID with bind available connection of this user; MTCF returns to ML/MMF and new connection reports response message.
Step 402: if MTCF does not carry business information over the new connection, then inquire about multi-link business information (as bandwidth, type of service etc.) to MSCF, MSCF pushes multi-link business information to MTCF.It should be noted that, if there is carrying business information over the new connection in MTCF, so this step can be omitted.
Step 403:MTCF sends multi-link resource request message to MPCF, and carries link information, business information etc. in multi-link resource request message.
Step 404: if MPCF does not have the signing inventory of user, so, MPCF needs, by mutual with MUPD, to obtain the signing inventory information of user.MPCF, according to the signing inventory of user, carries out authorization check to the multi-link business information of user's request, and passes through authorization check.If MPCF exists the signing inventory of user, then that can omit between MPCF and MUPD is mutual.
After MPCF receives multi-link resource request message and obtains the signing inventory of user, the user signing contract information that the link information that MPCF policing rule Network Based, MTCF provide, business information, MUPD provide, and the Resource availability information that MPCF collects makes resource and admission decision-making, rule of generating strategy.Here, resource and admission decision-making, rule of generating strategy belong to those skilled in the art's conventional techniques means, are prior aries, and its specific implementation is not intended to limit the scope of the invention, and therefore, are not described in detail here.
Step 405:MPCF and TF is mutual, the strategy rule downloading made is installed the policing rule received to TF, TF.
Step 406:MPCF returns the response of multi-link resource request to MTCF.
Fig. 5 is the schematic flow sheet that the present invention realizes the second embodiment of multi-link method, and in the second embodiment, MTCF and MUPD is mutual, as shown in Figure 5, comprises the following steps:
Step 500:MUE detects new access networks available, and is attached to this access network; MUE and ML/MMF is mutual, and complete access authentication, ML/MMF is to MUE distributing IP address.
Step 501:ML/MMF reports new link information to MTCF, and new link information comprises the IP address be newly assigned to, and also comprises logic access mark and/or physics access mark etc. further.
This step specifically comprises: after MTCF receives the new link information that ML/MMF reports, the link information new to this is registered, and safeguards the available link information of MUE, such as MTCF by user ID with bind available connection of this user; MTCF returns to ML/MMF and new connection reports response message.
Step 502: if MTCF does not carry business information over the new connection, then inquire about multi-link business information (as bandwidth, type of service etc.) to MSCF, MSCF pushes multi-link business information to MTCF.It should be noted that, if there is carrying business information over the new connection in MTCF, so this step can be omitted.
Step 503: if MTCF does not have the signing inventory of user, so, MTCF needs, by mutual with MUPD, to obtain the signing inventory information of user.If MTCF exists the signing inventory of user, then that can omit between MTCF and MUPD is mutual.
Step 504:MTCF is according to the signing inventory of user, authorization check is carried out to the multi-link business information of user's request, if authorization check passes through, then MTCF sends multi-link resource request message to MPCF, and carries link information, business information etc. in multi-link resource request message.
The Resource availability information that link information, business information and MPCF that step 505:MPCF policing rule Network Based, MTCF provide collect makes resource and admission decision-making, rule of generating strategy; MPCF and TF is mutual, the strategy rule downloading made is installed the policing rule received to transfer function TF, TF.
Step 506:MPCF returns the response of multi-link resource request to MTCF.
Fig. 6 is the schematic flow sheet that the present invention realizes the 3rd embodiment of multi-link method, and in the 3rd embodiment, MUPD is arranged in ML/MMF, as shown in Figure 6, comprises the following steps:
Step 600:MUE detects new access networks available, and is attached to this access network; MUE and ML/MMF is mutual, and complete access authentication, ML/MMF is to MUE distributing IP address.
Step 601:ML/MMF reports new link information to MTCF, and new link information comprises the IP address be newly assigned to, and also comprises logic access mark and/or physics access mark etc. further.
This step specifically comprises: after MTCF receives the new link information that ML/MMF reports, the link information new to this is registered, and safeguards the available link information of MUE, such as MTCF by user ID with bind available connection of this user; MTCF returns to ML/MMF and new connection reports response message.
Step 602: if MTCF does not carry business information over the new connection, then inquire about multi-link business information (as bandwidth, type of service etc.) to MSCF, MSCF pushes multi-link business information to MTCF.It should be noted that, if there is carrying business information over the new connection in MTCF, so this step can be omitted.
Step 603:MTCF sends multi-link resource request message to MPCF, and carries link information, business information etc. in multi-link resource request message.
Step 604: if MPCF does not have the signing inventory of user, so, MPCF needs, by mutual with ML/MMF, to obtain the signing inventory information of user.MPCF, according to the signing inventory of user, carries out authorization check to the multi-link business information of user's request, and passes through authorization check.If MPCF exists the signing inventory of user, then that can omit between MPCF and ML/MMF is mutual.
After MPCF receives multi-link resource request message and obtains the signing inventory of user, the user signing contract information that the link information that MPCF policing rule Network Based, MTCF provide, business information, ML/MMF provide, and the Resource availability information that MPCF collects makes resource and admission decision-making, rule of generating strategy.
Step 605:MPCF and TF is mutual, the strategy rule downloading made is installed the policing rule received to TF, TF.
Step 606:MPCF returns the response of multi-link resource request to MTCF.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind realizes multi-link framework, it is characterized in that, comprise multi-link transmission controlling functions MTCF, multi-link position/mobile management function ML/MMF, multi-link policy control functions MPCF, multi-link service control function MSCF, and for storing user subscription inventory multi-link user's inventory storehouse MUPD and the multi-link user terminal MUE of two or more access networks can be accessed; Wherein,
Described MTCF, for be responsible for multi-link under routing policy, multi-link information registering and maintenance; Multi-link resource request is sent to described MPCF;
Described ML/MMF, for location management and the mobile management of responsible user; Complete the management of described MUE access network, report the new link information of described MUE to described MTCF;
Described MPCF, for being responsible for multi-link policy control; According to described multi-link resource request, carry out receiving decision-making, rule of generating strategy issuing;
Described MSCF, is connected with described MTCF, described MPCF respectively, provides multi-link business information;
Wherein, described MPCF at least carries out receiving decision-making according to the user signing contract information in described MUPD, described multi-link business information to described multi-link resource request.
2. framework according to claim 1, is characterized in that, when described user signing contract information is obtained by described MPCF,
Described MPCF, the described user signing contract information that the described multi-link business information provided specifically for policing rule Network Based, described MTCF, described MUPD provide, and the Resource availability information that described MPCF collects, make resource and admission decision-making, rule of generating strategy.
3. framework according to claim 1, is characterized in that, when described user signing contract information is obtained by described MPCF,
Described MPCF, the user signing contract information that the multi-link business information provided specifically for policing rule Network Based, described MSCF, described MUPD provide, and the Resource availability information that described MPCF collects, make resource and admission decision-making, rule of generating strategy.
4. framework according to claim 1, is characterized in that, described MUPD is connected with described MPCF and carries out information interaction; Or,
Described MUPD is connected with described MTCF and carries out information interaction; Or,
Described MUPD is arranged in described ML/MMF.
5. realize a multi-link method, it is characterized in that, the method comprises:
MUE and ML/MMF is mutual, completes the management of MUE access network;
Described ML/MMF reports the new link information of described MUE to MTCF, and described MTCF sends described multi-link resource request to MPCF;
Described MPCF, according to described multi-link resource request, carries out receiving decision-making, rule of generating strategy issuing; Wherein, described MPCF at least carries out receiving decision-making according to the user signing contract information in MUPD, described multi-link business information to described multi-link resource request.
6. method according to claim 5, is characterized in that, described MUE and ML/MMF is mutual, and the management completing MUE access network comprises:
Described MUE detects new access networks available, and is attached to this access network; Described MUE and described ML/MMF is mutual, completes access authentication, and described ML/MMF gives described MUE distributing IP address.
7. method according to claim 6, is characterized in that, described ML/MMF reports new link information to comprise to described MTCF:
After described MTCF receives the new link information that described ML/MMF reports, the link information new to this is registered, and safeguards the available link information of described MUE; Described MTCF returns to described ML/MMF and new connection reports response message; Described new link information includes the IP address be newly assigned to.
8. method according to claim 5, is characterized in that, before described MTCF sends described multi-link resource request to described MPCF, the method also comprises:
Described MTCF inquires about multi-link business information to MSCF, and described MSCF pushes described multi-link business information to MTCF.
9. the method according to any one of claim 5 ~ 8, is characterized in that, described MUPD is connected with described MPCF and carries out information interaction; Or described MUPD is arranged in described ML/MMF;
Described MTCF is to after described MPCF sends multi-link resource request, and MPCF carries out receiving decision-making to resource request, before rule of generating strategy, the method also comprises:
Described MPCF, by mutual with MUPD, obtains the signing inventory information of user;
Described MPCF, according to the signing inventory of described user, carries out authorization check to the described multi-link business information of user's request, and passes through authorization check.
10. the method according to any one of claim 5 ~ 8, is characterized in that, described MUPD is connected with described MTCF and carries out information interaction;
Before described MTCF sends multi-link resource request to MPCF, the method also comprises: described MTCF, by mutual with MUPD, obtains the signing inventory information of described user;
Described MTCF, according to the signing inventory of described user, carries out authorization check to the described multi-link business information of user's request, and passes through authorization check.
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| CN106332272B (en) | 2015-07-01 | 2020-02-18 | Oppo广东移动通信有限公司 | Positioning method and device |
| CN106714270B (en) | 2015-07-14 | 2020-10-16 | Oppo广东移动通信有限公司 | Service transmission method, terminal and network equipment |
| CN106358239B (en) | 2015-07-14 | 2020-07-10 | Oppo广东移动通信有限公司 | Data transmission method, sending equipment and receiving equipment |
| CN106358218A (en) | 2015-07-14 | 2017-01-25 | 广东欧珀移动通信有限公司 | Service transmission method and transmission device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007082587A1 (en) * | 2006-01-20 | 2007-07-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Policy enforcement within an ip network |
| CN101616470A (en) * | 2008-06-24 | 2009-12-30 | 华为技术有限公司 | The method for processing business of multi-mode multi-standby terminal, network system and equipment |
| CN101330757A (en) * | 2008-07-28 | 2008-12-24 | 中兴通讯股份有限公司 | Method for implementing business safety grade in next generation network |
| CN101640913A (en) * | 2008-08-01 | 2010-02-03 | 中国移动通信集团公司 | System and method for mobility management |
| CN101651977A (en) * | 2009-08-28 | 2010-02-17 | 华为技术有限公司 | Network selection method and device based on multi-connection |
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| CN102378358A (en) | 2012-03-14 |
| WO2012019379A1 (en) | 2012-02-16 |
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