CN101119531A - Method of selecting foreign agent for mobile terminal and access gateway - Google Patents
Method of selecting foreign agent for mobile terminal and access gateway Download PDFInfo
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- CN101119531A CN101119531A CNA200610061945XA CN200610061945A CN101119531A CN 101119531 A CN101119531 A CN 101119531A CN A200610061945X A CNA200610061945X A CN A200610061945XA CN 200610061945 A CN200610061945 A CN 200610061945A CN 101119531 A CN101119531 A CN 101119531A
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Abstract
The present invention relates to a method of selecting foreign agent for mobile terminal and an access gateway, wherein, the method comprises: setting up the access gateway and maintaining all the foreign agent lists that can be acted as an agent, selecting foreign agent for mobile terminal in the scope of the agent lists through the access network of itself. The access gateway in the technical proposal of the present invention and the foreign agent have a many-to-many relationship, which supports Mesh network structure, and can support proper foreign agent for the new access mobile terminal.
Description
Technical field
The present invention relates to communication field, particularly a kind of IAD is the method that portable terminal is selected FA.
Background technology
The 3GPP2 normal structure is in order to guarantee the competitiveness of CDMA2000 serial system in future at present, carrying out the research and the standard of network evolution items, its main purpose strengthens packet switched capabilities exactly, simplifies network configuration, improves QoS, reduces time delay, improves user data rate, improves power system capacity and coverage rate, minimizing operation cost etc., make packet network after the evolution that the carrying to real time business and non-real-time service can more effectively be provided, for the user provides abundant more business.
The demand of evolution Network Based has proposed a lot of evolvement network frameworks on the 3GPP2 standards meetings, relatively the network frame of main flow is as shown in Figure 1 at present.Among the figure, network mobility anchor point NMA realizes the mobile management function of mobile IP terminal in certain area coverage; Mobile IP Foreign Agent is realized the FA function to the MIPv4 terminal, and this functional entity may be realized in same equipment with the network mobility anchor point.Access gateway AG W major function is the default gateway as AT, finishes access authentication, and mobile management, QoS support, bear the function of the former PDSN of part; The function of PMIP proxy-mobile IP also will realize in same equipment entity simultaneously.
FA function with MIPv4 in the present network configuration is placed on this one deck realization of network mobility anchor point, and the terminal under the service of same mobility anchor point can be used identical FA CoA address like this, can save very limited IPv4 address resource at present.But this spline structure also brings some problems: because the function of FA is equivalent to realize in the IAD of this network configuration among the IETF of standard, FA contains network prefix information by transmission Agent Advertisement AA message makes terminal can judge whether self is moved to terminal, need carry out the registration of mobile IP again.And realize owing to FA is placed on higher level in the present network, need access gateway AG W to act on behalf of FA and send corresponding AA message to terminal.But the drawback of bringing like this is to need that man-to-man relation is arranged between network mobility anchor point/FA and IAD, therefore can't support the mesh network of current trend, i.e. the network configuration of Mesh.So-called Mesh refers to that promptly each LA Management Room is the annexation of multi-to-multi.
Summary of the invention
Main purpose of the present invention is to provide a kind of method and IAD for portable terminal selection Foreign Agent, can provide suitable Foreign Agent for the new portable terminal that inserts.
For achieving the above object, technical scheme provided by the invention is as follows:
A kind of method for portable terminal selection Foreign Agent comprises:
IAD is set up and is safeguarded all its Foreign Agents that can act on behalf of tabulations, and selects Foreign Agent for the portable terminal by self access network in this list of proxies scope.
The gateway of described new access is that portable terminal is selected Foreign Agent according to the service ability of Foreign Agent and the service attribute of described portable terminal.
Wherein, when described when portable terminal when other IADs switch to described new IAD, context transfer when described new IAD switches by described portable terminal obtains the address information of the former Foreign Agent of portable terminal use from former IAD, if described former foreign agent address information is in the Foreign Agent scope of described new IAD, then new IAD still just selects the former Foreign Agent of portable terminal as its Foreign Agent, and directly and described former Foreign Agent set up bidirectional tunnel.
Wherein, when portable terminal when other IADs switch to described new IAD, context transfer when described new IAD switches by terminal obtains the address information of the former Foreign Agent of portable terminal use from former IAD, if described former foreign agent address information is not in the Foreign Agent scope of described new IAD, then new IAD is selected the Foreign Agent of other Foreign Agents as portable terminal, and set up bidirectional tunnel with it, portable terminal is initiated new MIPv4 registration process then.
A kind of IAD of selecting Foreign Agent for portable terminal, this IAD connects with at least one Foreign Agent, and described IAD is set up and is safeguarded all its Foreign Agents that can act on behalf of tabulations, and selects Foreign Agent for the portable terminal by self access network in this list of proxies scope.
IAD in the technical solution of the present invention is the relation of multi-to-multi with Foreign Agent, supports the network configuration of Mesh, can provide suitable Foreign Agent for the new portable terminal that inserts.
Description of drawings
Fig. 1 is a kind of 3G evolution network framework of prior art figure.
Fig. 2 is 3G evolution network framework figure of the present invention.
Embodiment
Referring to Fig. 2, Fig. 2 is 3G evolution network framework figure of the present invention, and wherein access gateway AG W links to each other in twos with network mobile anchor point NMA, and promptly a plurality of terminals that insert by same AGW can use different network mobile anchor point/Foreign Agents to handle respectively.In order to realize this goal, the processing method that need reach the portable terminal that switching is come to the information that IAD is preserved is carried out certain improvement.Wherein access gateway AG W need safeguard all its Foreign Agent that can act on behalf of tabulation, the IP address that comprises FA in the list item, the FA CoA address that they are all, the state indication of FA, need the information that comprises among all RFC3344 such as encapsulation format that support in the regulation proxy announcement message, this information is all or part of can to dynamically update.
Describe below in conjunction with 2 pairs of first embodiment of the present invention of accompanying drawing.
1. the hypothesis current mobile terminal is used Foreign Agent A by IAD a access carrier core net;
2. work as portable terminal and be moved, move to from IAD a in the wireless range of IAD b;
3. the context transfer when IAD b switches by terminal obtains the address information of the Foreign Agent A of portable terminal use from IAD a;
4. IAD b finds the original Foreign Agent A that uses of terminal in the scope that self can act on behalf of by contrasting the Foreign Agent tabulation that oneself can act on behalf of, so the direct bidirectional tunnel between foundation and Foreign Agent A;
5. portable terminal continues the agency service that use Foreign Agent A provides, transceive data by IAD b.
6. further, when portable terminal took place again by mobile from IAD b to IAD c, the context transfer when IAD c switches by terminal obtained the address information of the Foreign Agent A that portable terminal uses and the service attribute of use from IAD b.
7. IAD c finds that by contrasting the Foreign Agent tabulation that self can act on behalf of the original Foreign Agent A that uses of terminal is not in the scope that self can act on behalf of, so the service attribute that in the scope that self can act on behalf of, uses, service ability information such as busy-idle condition, reachable state that all can act on behalf of FA according to terminal as terminal select available, satisfy business need and idle relatively FA, and act on behalf of this FA and send proxy announcement message to portable terminal, that suppose to meet above-mentioned condition this moment is Foreign Agent C.
8. set up bidirectional tunnel between IAD c and Foreign Agent C, portable terminal is found self to be moved by the proxy announcement message of receiving, initiates new MIPv4 registration process;
9. the portable terminal agency service transceive data of using Foreign Agent C to provide by IAD c.
In described step 4, even IAD b finds that by contrasting the Foreign Agent tabulation that oneself can act on behalf of the original Foreign Agent A that uses of portable terminal is in the scope that self can act on behalf of, but find to have in the Foreign Agent tabulation other preferred FA, FA free time or the service ability more original than portable terminal as this FA are stronger, IAD also can be set up with described preferred FA and set up bidirectional tunnel so, not necessarily sets up bidirectional tunnel with the original Foreign Agent A of portable terminal.
Second embodiment:
1. when the new IAD c of mobile terminal-opening:
So service ability information such as the service attribute that in the scope that self can act on behalf of, uses of IAD c, busy-idle condition that all can act on behalf of FA, reachable state according to the portable terminal needs as terminal select available, satisfy business need and idle relatively FA, and act on behalf of this FA and send proxy announcement message to portable terminal;
3. set up bidirectional tunnel between IAD c and Foreign Agent C;
4. portable terminal is initiated new MIPv4 registration process according to the proxy announcement message of receiving;
5. portable terminal is supposed finally to select Foreign Agent C optimum by the agency service transceive data that IAD c uses Foreign Agent C to provide.
Need to prove at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (8)
1. an IAD is the method that portable terminal is selected Foreign Agent, and described IAD is the new gateway that inserts of portable terminal, it is characterized in that this method comprises:
IAD is set up and is safeguarded all its Foreign Agent that can act on behalf of tabulations, and selects Foreign Agent for portable terminal in this list of proxies scope.
2. method according to claim 1, it is characterized in that, when portable terminal when former IAD switches to described new IAD, perhaps mobile terminal-opening is new when inserting described IAD, described new IAD is that portable terminal is selected Foreign Agent.
3. method according to claim 2, it is characterized in that, when portable terminal when other IADs switch to described new IAD, context transfer when described new IAD switches by described portable terminal obtains the address information of the former Foreign Agent of portable terminal use from former IAD, if described former foreign agent address information is in the Foreign Agent scope of described new IAD, then new IAD still just selects the former Foreign Agent of portable terminal as its Foreign Agent, and directly and described former Foreign Agent set up bidirectional tunnel.
4. method according to claim 2, it is characterized in that, when portable terminal when other IADs switch to described new IAD, context transfer when described new IAD switches by terminal obtains the address information of the former Foreign Agent of portable terminal use from former IAD, if described former foreign agent address information is not in the Foreign Agent scope of described new IAD, then new IAD is selected the Foreign Agent of other Foreign Agents as portable terminal, and sets up bidirectional tunnel with it.
5. method according to claim 4 is characterized in that, portable terminal is initiated new MIPv4 registration process.
6. method according to claim 2 is characterized in that, the new gateway that inserts is that portable terminal is selected Foreign Agent according to the service ability of Foreign Agent and the service attribute of described portable terminal.
7. method according to claim 6 is characterized in that, the service ability of Foreign Agent comprises agency's busy-idle condition and reachable state.
8. IAD of selecting Foreign Agent for portable terminal, it is characterized in that, this IAD connects with at least one Foreign Agent, and described IAD is set up and is safeguarded all its Foreign Agents that can act on behalf of tabulations, and selects Foreign Agent for the portable terminal by self access network in this list of proxies scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610061945XA CN101119531A (en) | 2006-08-01 | 2006-08-01 | Method of selecting foreign agent for mobile terminal and access gateway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610061945XA CN101119531A (en) | 2006-08-01 | 2006-08-01 | Method of selecting foreign agent for mobile terminal and access gateway |
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| Publication Number | Publication Date |
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| CN101119531A true CN101119531A (en) | 2008-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA200610061945XA Pending CN101119531A (en) | 2006-08-01 | 2006-08-01 | Method of selecting foreign agent for mobile terminal and access gateway |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327871A (en) * | 2017-08-01 | 2019-02-12 | 大唐移动通信设备有限公司 | A kind of communication means, the network equipment and communication system |
| CN115314448A (en) * | 2022-08-11 | 2022-11-08 | 北京百度网讯科技有限公司 | Method and device for accessing cloud network, electronic equipment and computer medium |
-
2006
- 2006-08-01 CN CNA200610061945XA patent/CN101119531A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327871A (en) * | 2017-08-01 | 2019-02-12 | 大唐移动通信设备有限公司 | A kind of communication means, the network equipment and communication system |
| CN115314448A (en) * | 2022-08-11 | 2022-11-08 | 北京百度网讯科技有限公司 | Method and device for accessing cloud network, electronic equipment and computer medium |
| CN115314448B (en) * | 2022-08-11 | 2023-12-05 | 北京百度网讯科技有限公司 | Method and device for accessing cloud network, electronic equipment and computer medium |
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Application publication date: 20080206 |