CN101207917B - Method, apparatus and communication system for interactive information in the course of media independence switch - Google Patents
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Abstract
The invention discloses an information interaction method in a Media Independent Handover process; wherein, in the Media Independent Handover process between a source node and a target node, a User End obtains own handover related information and sends the handover related information to the target node which notifies the source node to maintain or / and release the network resources of the Use End based on the handover related information. In this way, the problem that information interaction of the handover state between the User End, source nodes and target nodes cannot be realized under the prior technology, thereby influencing the normal proceeding of the whole handover process, is resolved. The invention also discloses a User End, a communication device and a corresponding communication system which are used for information interaction in the media independent handover process.
Description
Technical field
The present invention relates to the communications field, particularly information interactive method, device and communication system in media-independent switches.
Background technology
Under existing wireless communication technology condition, the mobile subscriber can't roam under different wireless access technologys and switch, (comprise IEEE802.3 in order to solve the mobile subscriber at heterogeneous network, IEEE802.11,802 networks such as IEEE802.16 and cellular networks such as 3GPP and 3GPP2) between the seamless switching problem, IEEE 802 wireless working groups have set up IEEE 802.21 working groups, be responsible to define public switching framework to be used for wired and wireless IEEE 802 standards (as IEEE 802.3/802.11/802.16) and 3G standard, requirement that standard is switched and corresponding handover mechanism between various criterion.
The purpose of IEEE802.21 standard development is to provide the handoff procedure between the different media types, by supporting the switching between the different media types to strengthen the experience of user to mobile device, target is finally to make mobile device can select best network connection type and seamless switching speech channel automatically when internetwork roaming, and need not user intervention.In general, terminal and network, (Point of Attachment may be a multimode PoA), promptly supports different wireless standards, can carry out speech and transfer of data simultaneously sometimes on a plurality of interfaces as base station, attachment point.Present mobile communications network has developed to microcellulor (IEEE 802.11) and macrocellular (3GPP, 3GPP2, IEEE 802.16), may intersect covering between these honeycombs mutually, switches just may take place between networks of different type.For seamlessness and the continuity that realizes this switching, IEEE802.21 working group has introduced new protocol function layer-media-independent handoff functionality (Media Independent Handover Function in existing mobility management protocol stack, MIHF) module, the MIHF module in the mobility management protocol stack the position and key service shown in Figure 1A, the MIHF module logically is defined as a thin layer in the mobility management protocol stack of terminal and network, plays help function in switching decision process; At multimode terminal, the MIHF module offers the upper strata and need make the switching decision and how effectively make some necessary informations of switching decision, and switching decision and link selection are made based on the input and the context of MIHF module in the upper strata, thereby realize seamless switching; The handoff procedure that the MIHF module mainly provides following service to help the user:
The media-independent Event Service (Media Independent Event Service, MIES): classification, filtration and report about the dynamic change incident of link characteristics, Link State and link-quality are provided;
The media-independent command service (Media Independent Command Service, MICS): the means that MIH user management and the control link behavior relevant with switching and mobility is provided;
(Media Independent Information Service, MIIS): the feature and the professional details of service network and ambient network are provided, and these information are used for the efficient system access and switch decision in the media-independent service.
Consult shown in Figure 1A and Figure 1B, all comprise media-independent in each network element of user terminal in the communication system and network side and switch (Media Independent Handover, MIH) line module and MIHF module, the MIH line module is mobile management and the application protocol that belongs to layer three (L3), comprise mobile Internet Protocol (Mobile Internet Protocol, MIPv4/v6) and conversation initialized protocol (Session InitiatedProtocol, SIP) mobility management protocol and switchover policy such as, transmission and application etc., the MIHF module just provides the media-independent Event Service, the media independent handoff protocol layer of media-independent command service and media-independent service.Wherein, carry out information interaction by MIH primitive (comprising that request primitive is finished in switching, indication is finished in switching, response primitive is finished in switching and definite primitive is finished in switching) between the MIHF module of MIH line module and this locality, carry out information interaction by MIH message (comprising that request message is finished in switching and response message is finished in switching) between the local MIHF module and the MIHF module of far-end equity.
Switch to the process of destination node (as objective network) from source node (as source network) at user terminal, when switching is finished, user terminal needs to send to destination node and is used to represent that the switching that handover operation is finished finishes request message, and notify corresponding source node to discharge Internet resources about this user terminal by this destination node, and described switching to finish request message be to finish request primitive by the switching that the MIHF module on the user terminal issues according to the MIH line module of this locality to generate, at present, described switching is finished the switching state information of not adding this user terminal in the request primitive and (is comprised handoff failure, handover success or switching refusal), so this user terminal can not be finished request message by switching self switching state information is sent to described destination node, therefore, this destination node can not notify corresponding source node to discharge or/and keep the Internet resources of described user terminal, like this, the carrying burden of described source node will be caused; On the other hand, because source node is not made any processing to the Internet resources of this user terminal, therefore, this source node can't represent that the resource state information of result sends to described destination node with being used to, thereby this destination node can't notify relevant user terminals how to continue corresponding BlueDrama, this has influenced normally carrying out of whole switching flow, and then has influenced user's experience.In addition, the mechanism that defines in the current standard is merely able to the situation that processing terminal has only individual session to switch, and is inapplicable for the situation that user terminal has a plurality of sessions to switch simultaneously.
Summary of the invention
The invention provides method, device and the corresponding media-independent switched system of send state information in the media-independent handoff procedure.
The technical scheme that the specific embodiment of the present invention provides is as follows:
A kind of in the media-independent handoff procedure method of send state information, comprise: user terminal carries out between source node and destination node in the process of media-independent switching, described user terminal obtains the handover relevant information of self, finish in switching and to carry described handover relevant information in the request primitive, described handover relevant information comprises the switching state information of user terminal, perhaps comprises the switching state information and the corresponding processing request of user terminal; Finish corresponding switching of request primitive generation according to described switching and finish request message, finish request message by this switching described handover relevant information is sent to described destination node, described handover relevant information is notified to described source node by destination node.
A kind of user terminal, comprise: the MIH line module, be used for the media-independent switching is carried out in individual session or a plurality of session of this user terminal, and in the process that media-independent switches, obtain the handover relevant information of user terminal, finish in switching and to carry described handover relevant information in the request primitive, described handover relevant information comprises the switching state information of user terminal, perhaps comprises the switching state information and the corresponding processing request of user terminal; The MIHF module is used for finishing corresponding switching of request primitive generation according to described switching and finishes request message, finishes request message by this switching described handover relevant information is sent to the communicator that this user terminal is belonged to after the switching session.
A kind of communicator comprises:
The MIHF module, be used to receive the handover relevant information that user terminal sends, described handover relevant information sends by finish request message by described user terminal by switching before switching session, described switching is finished request message and is finished the request primitive generation according to switching, described switching is finished request primitive and is carried described handover relevant information, and be used for described handover relevant information is notified to the communicator that described user terminal is belonged to before switching session, described handover relevant information comprises the switching state information of user terminal, perhaps comprises the switching state information and the corresponding processing request of user terminal;
The MIH line module, be used to indicate the MIHF module that the handover relevant information of user terminal is sent to the communicator that described user terminal is belonged to before switching, perhaps indicate the respective handling result of the MIHF module belonged to described user terminal before switching communicator to send to user terminal.
A kind of communication system, comprise: user terminal, when between sources traffic device and target communication device, carrying out the media-independent switching, the MIH line module of user terminal obtains the handover relevant information of self, finish in switching and to carry described handover relevant information in the request primitive, and the MIHF module that request primitive sends to user terminal is finished in this switching; The MIHF module of user terminal is finished corresponding switching of request primitive generation according to described switching and is finished request message, finish request message by this switching described handover relevant information is sent to target communication device, and receive the switching that described target communication device sends and finish response message; Target communication device, the MIHF module of target communication device receives the handover relevant information that user terminal sends, and described handover relevant information is notified to the sources traffic device, described handover relevant information comprises the switching state information of user terminal, the switching state information and corresponding processing that perhaps comprise user terminal are asked, and receive the switching that described sources traffic device sends and finish response message, and response message is finished in this switching sent to described user terminal; Sources traffic device, the MIHF module of sources traffic device receive the handover relevant information that described target communication device sends, and send to the MIH line module of sources traffic device; After the MIH line module of sources traffic device is handled the Internet resources of described user terminal according to described handover relevant information, obtain result, and add this result to corresponding switching and finish the MIHF module that sends to the sources traffic device in the response primitive; The MIHF module of sources traffic device receives to switch finishes response primitive, and generates the switching of carrying result and finish response message, response message is finished in this switching sent to target communication device.
The beneficial effect of the specific embodiment of the present invention is as follows:
Among the present invention, when user terminal carries out the media-independent switching between source node and destination node, this user terminal obtains the handover relevant information of self, and this handover relevant information is sent to destination node, by this destination node described handover relevant information is sent to corresponding source node again, thereby make and to carry out the mutual of handover relevant information between user terminal, destination node and the source node, like this, just guaranteed normally carrying out of whole switching flow, and then guaranteed user's speech quality to have improved user's experience.
Description of drawings
Figure 1A is MIH line module and the location diagram of MIHF module in the mobility management protocol stack in the prior art;
Figure 1B is in the prior art between MIHF module and the local MIH line module, information interaction schematic diagram between the MIHF module of MIHF module and opposite end;
Fig. 2 is a media-independent switched system block diagram in the embodiment of the invention;
Fig. 3 A carries out media-independent switching flow figure for user terminal in the example of the present invention;
Fig. 3 B is the flow chart that user terminal sends self handover relevant information in the embodiment of the invention in the process that individual session is switched to destination node by source node.
Embodiment
In the present embodiment, user terminal carries out between source node and destination node in the process of media-independent switching, this user terminal obtains the handover relevant information of self, and this handover relevant information is sent to destination node, this destination node discharges or/and keep the Internet resources of described user terminal according to described handover relevant information notification source node.Described handover relevant information comprises the switching state information (as handoff failure, handover success or switch refusal etc.) of user terminal, perhaps comprises the switching state information of user terminal and handles request (as releasing network resources or keep Internet resources etc.) accordingly.
User terminal transmits handover relevant information to destination node and is divided into two kinds of situations:
First kind of situation is, user terminal switches to destination node with individual session by source node, then user terminal is finished the handover relevant information of adding in the request primitive at individual session in the switching of this locality, and finish corresponding switching of request primitive generation according to described switching and finish request message, finish request message by this switching and send described handover relevant information to destination node.
Second kind of situation is, user terminal with a plurality of sessions by source node switch to destination node then user terminal finish in the request primitive handover relevant information of adding in the switching of this locality at each bar session, and finish corresponding switching of request primitive generation according to described switching and finish request message, finish request message by this switching and send described handover relevant information to destination node.
Be example when switching individual session, to transmit handover relevant information and when switching a plurality of session, to transmit handover relevant information respectively below, and be elaborated in conjunction with the accompanying drawings.
Consult shown in Figure 2ly, in the present embodiment, communication system comprises user terminal 20, source node 21 and destination node 22.Described user terminal 20 is used for connecting with destination node 22, to finish data communication; Described source node 21 and destination node 22 are used for user terminal 20 is linked into network, and when user terminal 20 carries out the media-independent switching between source node 21 and destination node, by carrying out the mutual of handover relevant information and result, and guarantee normally carrying out of whole switching flow with user terminal 20.
Described user terminal 20 comprises MIH line module 200 and MIHF module 201.Described MIH line module 200 is used for the BlueDrama of user terminal 20 is carried out the media-independent switching, and in handoff procedure, obtain the handover relevant information of user terminal 20, and this handover relevant information added to switch finish in the request primitive and this primitive is sent to MIHF module 201; Described MIHF module 201 is used for finishing corresponding switching of request primitive generation according to described switching and finishes request message, and the described handover relevant information of cutting is sent to destination node 22, and the respective handling result of the source node 21 that returns of receiving target node 22 by this message.
Described destination node 22 comprises MIH line module 220 and MIHF module 221.Described MIHF module 221 is used to receive the switching that user terminal 20 sends and finishes request message, and the handover relevant information of carrying in this message is sent to source node 21, and the respective handling result that returns of reception sources node 21, and this result is sent to user terminal 20; Described MIH line module 220 is used to indicate MIHF module 221 that the handover relevant information of user terminal 20 is sent to source node 21, and perhaps, indication MIHF module 221 sends to user terminal 20 with the respective handling result of source node 21.
Described source node 21 comprises MIH line module 210 and MIHF module 211.Described MIHF module 211 is used for the handover relevant information that the receiving target node sends, and send it to MIH line module 210, and response primitive is finished in the switching of carrying the respective handling result that reception MIH line module 210 returns, and generate corresponding the switching and finish response message, send this message to destination node 22; Described MIH line module 210 is used for the handover relevant information that sends according to destination node 22 Internet resources of user terminal 20 is discharged accordingly or/and keep processing, and after processing finishes, obtain corresponding result, and add this result to corresponding switching and finish and send to MIHF module 211 in the response primitive.
Based on the said system block diagram, in the present embodiment, when user terminal 20 carried out the media-independent switching between source node 21 and destination node 22, switching flow can be triggered by user terminal 20, is perhaps triggered by source node 21.Consult shown in Fig. 3 A, with the media-independent switching flow by user terminal 20 triggerings is example, at first, source node 21 is behind the media-independent handoff candidate network inquiry request message (MIH_MN_HO_Candidate_Query Request) that receives user terminal 20 transmissions, just send media-independent to destination node 22 and switch query resource request message (MIH_N2N_HO_Query_Resources Request), receiving after media-independent that destination node 22 returns switches query resource response message (MIH_N2N_HO_Query_Resources Response), return media-independent handoff candidate network inquiry response message (MIH_MN_HO_Candidate_Query Response) to user terminal 20.User terminal 20 sends the media-independent switching to source node 21 and submits request message (MIH_MN_HO_Candidate_Commit Request) to then, and transmit this media-independent switching by source node to destination node and submit request message (MIH_Net_HO_Candidate_Commit Request) to, after destination node 22 is received this request message, return media-independent to source node 21 and switch submission response message (MIH_Net_HO_Candidate_Commit Response), and transmit this media-independent switching by source node 21 to user terminal 20 and submit response message (MIH_MN_HO_Candidate_CommitResponse) to, user terminal 20 begins to carry out the media-independent switching from source node 21 to destination node 22 then.
When the media-independent switching is finished, user terminal 20 will send to switch to destination node 22 finishes request message (MIH_MN_HO_Complete Request), finish process ends to trigger to switch, in the present embodiment, user terminal 20 promptly is to send destination node 22 in the switching state information that switching is finished in the process ends self, thereby with the result notification destination node 22 that switches.
Consult shown in Fig. 3 B, under described first kind of situation, user terminal 20 is as follows to the detailed process that destination node 22 sends handover relevant information:
Step 300: the MIH line module 200 in the user terminal 20 obtains local handover relevant information, and this handover relevant information added to switch finish in the request primitive (MIH_MN_HO_Complete.request), and request primitive is finished in described switching sent to MIHF module 201.
Step 301:MIHF module 201 is finished request primitive according to described switching and is generated corresponding the switching and finish request message (MIH_MN_HO_Complete Request), and this message is sent to MIHF module 221 in the destination node 22; The handover relevant information that carries user terminal 20 in the request message is finished in described switching.
Step 302:MIHF module 221 sends the switching of carrying handover relevant information to the MIH of this locality line module 220 and finishes indication (MIH_MN_HO_Complete.indication).
Step 303:MIH line module 220 sends to switch to MIHF module 221 finishes request primitive (MIH_N2N_HO_Complete.request), indicates it that described handover relevant information is sent to source node 21.
The MIHF module 211 of step 304:MIHF module 221 in source node 21 sends to switch finishes request message (MIH_N2N_HO_Complete Request), the handover relevant information of this message carrying user terminal 20.
Step 305:MIHF module 211 sends the switching of carrying described handover relevant information to the MIH of this locality line module 210 and finishes indication (MIH_N2N_HO_Complete.indication).
Step 306:MIH line module 210 discharges the Internet resources of the user terminal 20 of this locality according to the handover relevant information that obtains or keeps operation, and result (being whether the pairing Internet resources of individual session are released or keep) is added on to switch to finish in the response primitive (MIH_N2N_HO_Complete.response) sends to MIHF module 211.
Step 307:MIHF module 211 is finished response primitive according to described switching and is generated corresponding the switching and finish response message (MIH_N2N_HO_Complete Response), and this message is sent to MIHF module 221 in the destination node 22; The result of carrying source node 21 in the response message is finished in described switching.
Step 308:MIHF module 221 sends the switching of carrying described result to the MIH of this locality line module 220 and finishes affirmation primitive (MIH_N2N_HO_Complete.confirm).
Step 309:MIH line module 220 returns to switch to MIHF module 221 finishes response primitive (MIH_MN_NO_Complete.response), indicates it that described result is sent to user terminal 20.
The MIHF module 201 of step 310:MIHF module 221 in user terminal 20 sends to switch finishes response message (MIH_MN_HO_Complete Response), the result of carrying source node 21 in this message.
Step 311:MIHF module 201 sends the switching of carrying described result to the MIH of this locality line module 200 and finishes affirmation primitive (MIH_MN_HO_Complete.confirm).
So far, user terminal 20 has just obtained the result of 21 pairs of corresponding Internet resources of source node, and switching flow formally finishes, and user terminal 20 can continue follow-up BlueDrama.
On the other hand, under described second kind of situation, because user terminal 20 switches to destination node 22 with many sessions, therefore, user terminal 20 will be finished the handover relevant information of adding each bar session in the request primitive in the switching of self, finish request primitive according to described switching then and generate corresponding the switching and finish request message, and finish request message by this switching and send the handover relevant information of described each bar session to destination node 22.
After request message was finished in the described switching of destination node 22 receptions, the Internet resources of 21 pairs of user terminals 20 of notification source node were correspondingly processed.Source node 21 is according to the handover relevant information of each bar session of receiving, discharges or keeps the pairing Internet resources of each bar session.
After having carried out release or having kept operation, the result of source node 21 each bar session (Internet resources that comprise which session are released, the Internet resources of which session kept) is added on local switching and finishes in the response primitive, finish response primitive according to this switching then and generate corresponding the switching and finish response message, and finish response message by this switching and send described result to destination node 22.
After response message was finished in the described switching of destination node 22 receptions, with the result informing user terminal 20 of 21 pairs of Internet resources of source node, user terminal 20 carried out follow-up processing according to described result.
Certainly, in the media-independent switched system, also can the corresponding type of message of redetermination, or/and the result of source node 21, this can't influence the realization effect of present embodiment in order to the handover relevant information that sends user terminal 20.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. information interactive method in the media-independent handoff procedure, it is characterized in that, user terminal carries out between source node and destination node in the process of media-independent switching, described user terminal obtains the handover relevant information of self, finish in switching and to carry described handover relevant information in the request primitive, described handover relevant information comprises the switching state information of user terminal, perhaps comprises the switching state information and the corresponding processing request of user terminal;
Finish corresponding switching of request primitive generation according to described switching and finish request message, finish request message by this switching described handover relevant information is sent to described destination node, described handover relevant information is notified to described source node by described destination node.
2. the method for claim 1, it is characterized in that, if carrying out media-independent to individual session, described user terminal switches, then this user terminal obtains the handover relevant information of described individual session, and finish the handover relevant information of carrying described individual session in the request primitive corresponding the switching, finish corresponding switching of request primitive generation according to described switching again and finish request message, and finish request message by this switching described handover relevant information is sent to destination node, described handover relevant information is notified to described source node by described destination node.
3. the method for claim 1, it is characterized in that, if carrying out media-independent to a plurality of sessions, described user terminal switches, then this user terminal obtains the handover relevant information of each bar session, and finish the handover relevant information of carrying described each bar session in the request primitive corresponding the switching, finish corresponding switching of request primitive generation according to described switching again and finish request message, and finish request message by this switching described handover relevant information is sent to destination node, described handover relevant information is notified to described source node by described destination node.
4. as each described method of claim 1-3, it is characterized in that, described source node finishes that resource discharges or/and after resource keeps operation, corresponding result is sent to destination node, the BlueDrama after this destination node is proceeded to switch according to described result informing user terminal.
5. method as claimed in claim 4, it is characterized in that, described source node is finished and is discharged or/and after keeping the operation of Internet resources, result is added on corresponding switching to be finished in the response primitive, and finish response primitive according to described switching and generate corresponding the switching and finish response message, and finish response message by this switching described result is sent to destination node.
6. a user terminal is characterized in that, comprising:
The MIH line module, be used for the media-independent switching is carried out in individual session or a plurality of session of this user terminal, and in the process that media-independent switches, obtain the handover relevant information of user terminal, finish in switching and to carry described handover relevant information in the request primitive, described handover relevant information comprises the switching state information of user terminal, perhaps comprises the switching state information and the corresponding processing request of user terminal;
The MIHF module is used for finishing corresponding switching of request primitive generation according to described switching and finishes request message, finishes request message by this switching described handover relevant information is sent to the communicator that this user terminal is belonged to after the switching session.
7. user terminal as claimed in claim 6 is characterized in that,
The MIH line module is used for finishing the handover relevant information that request primitive carries individual session corresponding the switching, perhaps finishes the handover relevant information of carrying each bar session in a plurality of sessions in the request primitive corresponding the switching.
8. a communicator is characterized in that, comprising:
The MIHF module, be used to receive the handover relevant information that user terminal sends, described handover relevant information is finished request message by described user terminal by switching and is sent before switching session, described switching is finished request message and is finished the request primitive generation according to switching, described switching is finished request primitive and is carried described handover relevant information, and be used for described handover relevant information is notified to the communicator that described user terminal is belonged to before switching session, described handover relevant information comprises the switching state information of user terminal, perhaps comprises the switching state information and the corresponding processing request of user terminal;
The MIH line module, be used to indicate the MIHF module that the handover relevant information of user terminal is sent to the communicator that described user terminal is belonged to before switching, perhaps indicate the respective handling result of the MIHF module belonged to described user terminal before switching communicator to send to user terminal.
9. communicator as claimed in claim 8 is characterized in that,
The MIHF module is used to receive the result that communicator that described user terminal belonged to sends before switching session, and notifies described user terminal with described result.
10. a communication system is characterized in that, comprising:
User terminal, when between sources traffic device and target communication device, carrying out the media-independent switching, the MIH line module of user terminal obtains the handover relevant information of self, finish in switching and to carry described handover relevant information in the request primitive, and the MIHF module that request primitive sends to user terminal is finished in this switching; The MIHF module of user terminal is finished corresponding switching of request primitive generation according to described switching and is finished request message, finish request message by this switching described handover relevant information is sent to target communication device, and receive the switching that described target communication device sends and finish response message;
Target communication device, the MIHF module of target communication device receives the handover relevant information that user terminal sends, and described handover relevant information is notified to the sources traffic device, described handover relevant information comprises the switching state information of user terminal, the switching state information and corresponding processing that perhaps comprise user terminal are asked, and receive the switching that described sources traffic device sends and finish response message, and response message is finished in this switching sent to described user terminal;
Sources traffic device, the MIHF module of sources traffic device receive the handover relevant information that described target communication device sends, and send to the MIH line module of sources traffic device; After the MIH line module of sources traffic device is handled the Internet resources of described user terminal according to described handover relevant information, obtain result, and add this result to corresponding switching and finish the MIHF module that sends to the sources traffic device in the response primitive; The MIHF module of sources traffic device receives to switch finishes response primitive, and generates the switching of carrying result and finish response message, response message is finished in this switching sent to target communication device.
11. communication system as claimed in claim 10, it is characterized in that, if carrying out media-independent to individual session, described user terminal switches, then the MIHF module of this user terminal will send to target communication device at the handover relevant information of described individual session, and the MIHF module of this target communication device discharges or keep the overall network resource of this user terminal according to described handover relevant information notification source communicator.
12. communication system as claimed in claim 10, it is characterized in that, if carrying out media-independent to a plurality of sessions, described user terminal switches, then the MIHF module of this user terminal will send to target communication device at the handover relevant information of each bar session, and the MIHF module of this target communication device is according to described handover relevant information notification source communicator release or keep the pairing Internet resources of each bar session.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101707674A CN101207917B (en) | 2006-12-22 | 2006-12-22 | Method, apparatus and communication system for interactive information in the course of media independence switch |
| PCT/CN2007/003730 WO2008077315A1 (en) | 2006-12-22 | 2007-12-21 | Method, apparatus and communication system for making information interaction during media independent handover |
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| CN2006101707674A CN101207917B (en) | 2006-12-22 | 2006-12-22 | Method, apparatus and communication system for interactive information in the course of media independence switch |
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| CN101754311B (en) * | 2008-12-20 | 2013-06-05 | 华为技术有限公司 | Network switching resource processing methods and device |
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| CN1249598A (en) * | 1998-09-07 | 2000-04-05 | 富士通株式会社 | Soft over-region switching method and mobile communication system based on said method |
| CN1663158A (en) * | 2002-05-10 | 2005-08-31 | 高通股份有限公司 | Handover in a hybrid communications network |
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| KR100718007B1 (en) * | 2004-01-06 | 2007-05-14 | 에스케이 텔레콤주식회사 | Method for Handover Between Asynchronous Communication Network and Synchronous Communication Network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1249598A (en) * | 1998-09-07 | 2000-04-05 | 富士通株式会社 | Soft over-region switching method and mobile communication system based on said method |
| CN1663158A (en) * | 2002-05-10 | 2005-08-31 | 高通股份有限公司 | Handover in a hybrid communications network |
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