CN101834914B - Method for realizing mapping relation between identity and position - Google Patents
Method for realizing mapping relation between identity and position Download PDFInfo
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- CN101834914B CN101834914B CN2010101597191A CN201010159719A CN101834914B CN 101834914 B CN101834914 B CN 101834914B CN 2010101597191 A CN2010101597191 A CN 2010101597191A CN 201010159719 A CN201010159719 A CN 201010159719A CN 101834914 B CN101834914 B CN 101834914B
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Abstract
The invention discloses a method for realizing a mapping relation between an identity and a position in the technical field of computer networks. The method comprises the following steps of: dividing a network into management domains; configuring at least one mapping server connected with other management domains in each management domain, wherein the mapping server stores home domain information; when the home domain information of the mapping server changes, sending an update message to a peer-to-peer mapping server of the mapping server; updating the home domain information of the peer-to-peer mapping server according to the update message by the peer-to-peer mapping server; and forwarding the update message to the peer-to-peer mapping server of the peer-to-peer mapping server until all mapping servers receive the update message and update the home domain information stored in the mapping servers. The problems of inquiry time delay and mobility of large-scale network mapping information are solved.
Description
Technical field
The invention belongs to technical field of the computer network, relate in particular to the implementation method of a kind of identity and location map relation.
Background technology
Fast development along with the Internet; Mobile subscriber and many locals user constantly increase; Traffic engineering and tactful route are adopted by a large amount of; The original design thought of tradition the Internet is difficult to continue to adapt to the new demand of network at aspects such as moving, many locals, safety and route can be expanded, is badly in need of making amendment and perfect.The double attribute problem of IP address is to cause the Internet to have one of basic reason of problems.In recent years; Each state all is devoted to the research of generation information network architecture and key technology; Like GENI (the Global Environmentfor Network Innovations) plan of the American National science fund committee (NSF, National Science Foundation) and FIRE (the Future Internet Research and Experimentation) plan of FIND (Future Internet Design) project and European Union etc.Clearly propose in China's 973 project guides in 2006 as emphasis research topic " new network system basic research "; Country's 973 projects " integrated trustable network and pervasive service system basic research " of project verification in the same year have stepped the important step to the research and the exploration of generation information network system basic theory aspect.
The thought of identity and position separating has become one of focus of new network architecture research.(Internet Research Task Force, (Routing Research Group RRG) has proposed LISP (Locator/IDSeparation Protocol) draft in route seminar IRTF) in study Internet task force in Cisco company.LISP uses a part of IP address as terminal iidentification (EID, Endpoint Identifier), another part as the route station location marker (RLOC, RoutingLocators), EID is that use at the terminal, RLOC is used to transmit packet.Through mapping, the encapsulation of EID and RLOC, accomplish the forwarding and the route of packet.Mapping about EID and RLOC is resolved; Cisco company has proposed number of mechanisms, like the method for LISP-ALT (LISP Alternative Topology), LISP-DHT (Towards a DHT to map identifiers onto locators), LISP-CONS (A Content distribution Overlay Network Service for LISP), NERD (A Not-so-novel EID to RLOC Database) and APT (A Practical TransitMapping Service).Though scheme is different, common ground is mapping relations database of design, and through network diffusion map information, its important design goal is to allow simple and effective relatively mapped system to be able to use, and reduces the change to existing software and hardware as far as possible.
But there are following shortcoming in current mechanism and imperfection:
1. when network size increased, there was bigger time delay in the inquiry of map information,
2. do not take into full account ambulant support.
Application number is 200710122012.1, and name is called the patent application of " method that realizes the integrated network location management ", has proposed a kind of new network architecture that separates mapping based on identity with station location marker.Integrated network is introduced in core net and is called mapping server (Identifier Mapping Server; IDMS) functional entity; Store the access sign (AccessIdentifier at terminal in the Local Area Network; AID) and exchange Route Distinguisher (Switch Routing Identifier, map information SRID).IDMS can also provide inquiry, insertion, deletion and the modification service of map information.For fear of the map information of single mapping server storing excess, adopt distributed map information storage organization, every mapping server is only preserved this territory of ownership and the current map information that moves to the terminal in this territory.In the communication process, need search positional information based on identity information and shine upon, therefore need the mapping server at mapping relations place, location, the present invention is exactly the location mechanism that will set up a kind of identity fast and accurately and location map relation.
Summary of the invention
The objective of the invention is to, propose the implementation method of a kind of identity and location map relation, there is time delay in the inquiry that is used to solve the large scale network map information and does not take into full account ambulant problem.
Technical scheme is: the implementation method of a kind of identity and location map relation is characterized in that said method comprises:
Step 1: network is divided into management domain;
Step 2: at least one mapping server that links to each other with other management domains of configuration in each management domain; Store home domain information in the said mapping server;
Step 3: when the home domain information of said mapping server changes, to the reciprocity mapping server transmission updating message of said mapping server;
Step 4: said reciprocity mapping server upgrades the home domain information of self storing according to updating message;
Step 5: the reciprocity mapping server to said reciprocity mapping server is transmitted updating message, and all mapping servers in network are received said updating message and upgraded the home domain information of self storing.
Said home domain information is meant, when home domain access-in management territory, gives the access sign of home domain and the mapping relations that home domain forms by inserting sign configuration management central dispense.
Said home domain information comprises access sign, home domain field, identifying code and home domain.
Said access sign adopts the home domain field of setting numerical value that it is divided into continuous access home block.
The home domain information of said mapping server change the renewal that is meant home domain information on the mapping server, add or cancel.
Said reciprocity mapping server is the mapping server of the management domain adjacent with the management domain at said mapping server place.
Said mapping server is communicated by letter with reciprocity mapping server through ICP/IP protocol.
Said updating message comprises the attribute that starts, purpose attribute, management domain sequence and the home domain information that changes; Wherein, the said attribute that starts is generated by the mapping server that sends the home domain information that changes at first, and in the updating message process of transmitting, remains unchanged; Said purpose attribute flags is once transmitted the mapping server of updating message; After the mapping server of forwarding updating message receives the home domain information of this variation; If comprise the reciprocity mapping server of the mapping server of this forwarding updating message in the purpose attribute, then no longer transmit updating message to reciprocity mapping server; The mapping server of process in the home domain information repeating process that the management domain sequence mark changes; Existed in the management domain sequence if receive the mapping server of the home domain information of this variation, then this mapping server is no longer handled the home domain information of this variation.
Said reciprocity mapping server is according to the home domain information that changes; Upgrading the home domain information of self storing specifically is; Access sign in the length of home domain field appointment is carried out the longest coupling; If the sign of the access in the home domain field length is different, the home domain information that then will change joins in the home domain message store table; If it is identical to insert sign, then check home domain, if home domain is different, then change the home domain content in the home domain information; Home domain information if home domain is identical to this variation does not process.
Beneficial effect of the present invention is: the mapping through inserting in the network between sign and the home domain is resolved, and has located the memory location of the identity and the location map relation of node, solves the time delay and the ambulant problem of the inquiry of large scale network map information.
Description of drawings
Fig. 1 is the sketch map of management domain in the identifier separating mapping network of the present invention;
Fig. 2 is home domain information sketch map among the present invention;
Fig. 3 is the connection sketch map of mapping server;
Fig. 4 is the communication flow diagram when portable terminal inserts in the specific embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment is elaborated.Should be emphasized that following explanation only is exemplary, rather than in order to limit scope of the present invention and application thereof.
Step 1: network is divided into management domain.
Step 2: in each management domain, dispose at least one and be used for the mapping server of store home domain information.
In the present invention, network is divided into several management domains, and each management domain is made up of the home domain that several join in this management domain.
The process in home domain access-in management territory is that the home domain manager proposes to distribute the application that inserts sign to inserting sign configuration management center.Mind-set home domain manager distributes access sign and corresponding identifying code in the configuration management of access sign.The home domain manager will insert sign and identifying code is configured on the mapping server of management domain of its access.Every mapping server all moves the security mechanism that inserts sign configuration management center, has only the legal message of identifying code in network, to transmit, otherwise will be abandoned by mapping server.When home domain access-in management territory, be home domain information for the access sign of home domain and the mapping relations that home domain forms by inserting sign configuration management central dispense.
Each management domain has at least a mapping server to link to each other with other management domains, and sets up session relationship with the mapping server in neighbours territory, mutual home domain information; The method that needn't adopt the present invention to propose between each home domain in management domain can directly be sent information query.
Setting up the mapping server of session relationship in the adjacent domains, be called reciprocity mapping server mutually, also is that peer server is the mapping server of the management domain adjacent with the management domain at mapping server place.After the mapping server session is set up successfully in the adjacent domains, can reciprocity mapping server be added in the reciprocity mapping server tabulation.Mapping server is communicated by letter with reciprocity mapping server through ICP/IP protocol.Regularly exchange keep-alive message between the equity mapping server, to confirm existing of peer-to-peer.Keep-alive message is a kind of fixed format information of regular transmission, after mapping server is set up the relation of equity, through regularly sending the existence that keep-alive message is confirmed peer-to-peer mutually.When mapping server does not receive the keep-alive message of peer-to-peer within certain hour, explain that then this peer relationship lost efficacy.With its deletion in reciprocity mapping server tabulation, no longer transmit updating message later on to it.
In the present invention, home domain information comprises access sign, home domain field, identifying code and home domain.Inserting sign adopts the home domain field of setting numerical value that it is divided into continuous access home block.This is the home domain organizational form of a kind of similar CIDR (CIDR is selected, Classless InterDomain Routing).The home domain field is a numerical value; Be similar to the prefix of IP address; But because it is different with the form of IP address to insert sign; So the numerical value that adopts the home domain field promptly to set will insert sign and be divided into continuous access home block, insert home block here corresponding to the subnet address in the IP address, represent a plurality of access signs that meet certain rule with the access home block.Be to be polymerized to the access home block like this, to reduce store items in order to insert sign.
Step 3: when the home domain information of said mapping server changes, to the reciprocity mapping server transmission updating message of said mapping server.
The home domain in access-in management territory upgrades self information, or breaks off with being connected of management domain, perhaps new home domain access-in management territory is arranged, and all can cause the home domain information on the mapping server in the management domain to change.
When the angelica domain information changes, can generate updating message automatically in the mapping server.The updating message that generates can send to reciprocity mapping server by mapping server.
Step 4: said reciprocity mapping server upgrades the home domain information of self storing according to updating message.
Employing increases progressively mechanism and carries out the information transmission between the mapping server.When connecting at first; The whole home domain information of exchange self between the equity mapping server; After information exchange for the first time finishes; Whenever self home domain information changes (comprise renewal, add and cancel), just send updating message, the content that changes to its reciprocity mapping server.
Updating message comprises the attribute that starts, purpose attribute, management domain sequence and the home domain information that changes; Wherein, the said attribute that starts is generated by the mapping server that sends the home domain information that changes at first, and in the updating message process of transmitting, remains unchanged; Said purpose attribute flags is once transmitted the mapping server of updating message; After the mapping server of forwarding updating message receives the home domain information of this variation; If comprise the peer server of the mapping server of this forwarding updating message in the purpose attribute, then no longer transmit updating message to peer server; The mapping server of process in the home domain information repeating process that the management domain sequence mark changes; Existed in the management domain sequence if receive the mapping server of the home domain information of this variation, then this mapping server is no longer handled the home domain information of this variation.
Up-to-date for guarantee information, the information updating between the mapping server adopts regularly retransmission mechanism, through retransmitting still effectively home domain information behind the certain hour; Do not retransmit certain bar message if exceed the time limit; It is invalid then this message to be regarded as, and in storage list, deletes, and no longer outwards transmits.
According to the present invention, for reducing the message in the network, conserve storage inserts sign and adopts the home domain field of certain numerical value that it is divided into continuous access home block.If it is identical in the length of home domain field appointment, to insert sign, then can a plurality of accesses signs be polymerized to one and insert home block, and the mapping relations that will insert home block and home domain forwards.
Peer server is according to the home domain information that changes; Upgrading the home domain information of self storing specifically is; Access sign in the length of home domain field appointment is carried out the longest coupling; If the sign of the access in the home domain field length is different, the home domain information that then will change joins in the home domain message store table; If it is identical to insert sign, then check home domain, if home domain is different, then change the home domain content in the home domain information; Home domain information if home domain is identical to this variation does not process.
Step 5: the peer server to said peer server is transmitted updating message, and all mapping servers in network are received said updating message and upgraded the home domain information of self storing.
In order to understand the present invention better, the present invention is further specified most below in conjunction with accompanying drawing.
Fig. 1 is the sketch map of management domain in the identifier separating mapping network of the present invention.Among Fig. 1,10,20,30 is three management domains, and 13,21,31 is mapping server, and 11,12 is two home domain under the management domain 10.As shown in Figure 1, within the specific limits network is divided into three management domains 10,20,30, wherein management domain 10 also comprises two home domain 11,12.Each management domain has at least one mapping server to link to each other with the external management territory, carries out the mutual of message, and the mapping server of management domain 10 is 13, and the mapping server of management domain 20,30 is respectively 21,31. Mapping server 13,21, connect between 31, reciprocity each other mapping server, mutual home domain information, and preserve the home domain information that the whole network comprises management domain 10,20,30.11,12 of home domain in the management domain 10 needn't connect with outer management domain 20,30.Mechanism of the present invention needn't be taked between the home domain 11 and 12 in the management domain 10, measure or other mechanism of inquiry mutually can be taked.
Utilize the home domain field of certain numerical value will insert sign to be divided into several continuous access home blocks in order to reduce store items among the present invention.The storage format of home domain information in the mapping server storage list is < inserting sign, home domain field, identifying code, home domain >.The home domain information processing is also carried out according to inserting home block, and specific embodiment combines accompanying drawing 2 to describe.
Fig. 2 is home domain information sketch map among the present invention.Home domain A, B, C have a management domain respectively of one's own, and each management domain has at least a mapping server to link to each other with other territories.Access Network A1, B, C are respectively the access subnet under management domain A, B, the C, and Access Network A2 is for newly being linked into the subnet of management domain A.Insert sign AID
A, AID
B, AID
C, home domain field FLD
A, FLD
B, FLD
CAnd identifying code SC
A, SC
B, SC
CDistribute to home domain A, B, C respectively by inserting sign configuration management center.Wherein SC (Security Code) representes identifying code, FLD (Field) expression home domain field, and home domain is represented with HR (Home Region).
Originally, have only the subnet of access A1 to insert in the management domain A.At first will be at mapping server IDMS
A, IDMS
B, IDMS
CLast configuration inserts home block, identifying code and home domain, and management domain A, B, C will insert sign AID respectively
A1, AID
B, AID
C, home domain field FLD
A1, FLD
B, FLD
C, identifying code SC
A1, SC
B, SC
CHome domain HR with correspondence
A, HR
B, HR
CBe configured on the mapping server separately and add in the storage list.Behind the reciprocity mapping server of configuration on every mapping server, begin to connect between B and A, the C, after connecting, carry out interacting message.Before diffusion home domain information, use the mechanism that inserts sign configuration management center to carry out safety inspection, have only the legal message of sign of inserting and identifying code outwards to transmit.After the information interaction through a period of time, three mapping servers are preserved the home domain information of three management domains respectively.
Insert when management domain A has the subnet of access A2, then will on mapping server, dispose to add in the storage list and also transmit.If the sign of the access in the home domain field scope is identical, just the home domain field is different, so in storage list with AID
A1And AID
A2Be polymerized to AID
A3, and with＜AID
A3, FLD
A3, SC
A, HR
A＞form this home domain forwards is gone out.If AID
A1And AID
A2Can not polymerization, then new store items of interpolation in storage list.IDMS
BAfter receiving updating message, compare message that receives and storage list clauses and subclauses.Can polymerization if insert home block, and home domain is identical, then it is polymerized to an information, if can not polymerization or home domain different, then add a new home domain message.IDMS
BContinue to IDMS again
CSpread this updating message, and successively to outdiffusion.
If Access Network A2 leaves management domain A, also need be at IDMS
AOn be configured, cancel this and insert home block.After configuration is accomplished, IDMS
ACan be to its reciprocity mapping server IDMS
BMessage is cancelled in transmission, IDMS
BAfter receiving that this cancels message, search the storage list of itself, if this home domain information that inserts sign is arranged then, if not then this message is not processed with this message deletion.IDMS
BContinue to IDMS again
CSpread this and cancel message, and successively to outdiffusion.
Mapping server among the present invention is carrying out updating message when transmitting, except updating message except comprising home domain information, also to carry some attribute informations, in case loops reduces the message number in the network.The present invention proposes three kinds of attribute information, the attribute that starts, purpose attribute and management domain sequence.The attribute that starts is filled in by the mapping server of this home domain information of initiation, and in repeating process, remains unchanged, and mapping server or not in the attribute that starts retransmits.Fill in the purpose mapping server that this message is sent in the purpose attribute; The management domain sequence is preserved all mapping servers of this home domain information via; After mapping server receives that Message Processing is accomplished; Before transmitting, inspection purpose attribute and management domain sequence, the mapping server that in purpose attribute and management domain sequence, has not existed is transmitted.
Fig. 3 is the connection sketch map of mapping server.A, B, C, D, E, F represent six mapping servers in the different management domains respectively among Fig. 3, and continuous line is represented and set up session between the mapping server and carry out the transmission of home domain information.Attribute information in the message that the individual mapping server that drawn respectively among the figure will send.IDMS
DThe configuration information of oneself is spread out, initiate this home domain information.The D attribute that starts is set to self D, and the purpose attribute is A, and the management domain sequence is D.After A receives the message that D sends, inspection start attribute, purpose attribute and management domain sequence, no longer to the D passback, and the purpose attribute is set to BC, adds A in the management domain sequence, then to B and C transmission.After B and C received, being checked through had B and C in the purpose attribute, passed no longer mutually between therefore, in the management domain sequence A was arranged, therefore also no longer passback give A.After B and C added the management domain sequence, the reciprocity mapping server to oneself sent this home domain message respectively.This attribute information mechanism has effectively reduced the message number in the network, has prevented the generation of loop.
Fig. 4 is the communication flow diagram when portable terminal inserts in the specific embodiment of the invention.In conjunction with the sketch map of Fig. 2 management domain, the home domain of terminal B1 and B2 is B ', existing moving to respectively under home domain A ' and the C ', and home domain A ', B ', C ' adhere to different management domain A, B, C separately.The communication steps of terminal B1 and B2 is following:
At first, the mapping server IDMS among management domain A, B, the C
A, IDMS
B, IDMS
CAll to move the map information mechanism among map locating program and the present invention.
After terminal B1 and B2 are linked into new ASR, ASR
AAnd ASR
CGive terminal B1 and new identity and the location map relation of B2 distribution respectively, and respectively to the mapping server IDMS of the current field
AAnd IDMS
CReport.IDMS
AAnd IDMS
CAfter receiving that message is reported in mapping, to home domain IDMS
BReport.
According to the record of existing patent of invention (application number 200710122012.1), when the terminal is linked into territory A, at first can be to IDMS
ASend query requests, the mapping relations of inquiry identity and position are if normal communication process is carried out in existence then directly carry out the replacement of identity information and positional information; If the mapping relations that do not have the mapping relations at this terminal then pass through to inquire about access sign and home domain; Obtain the home domain at this terminal; And to this home domain initiation inquiry; Obtain identity and the location map relation at terminal,, on home domain, all can preserve its identity and location map relation because tube terminal is whether mobile.
According to above-mentioned principle, when terminal B1 when B2 initiates communication, packet is sent to ASR
AOn, ASR
ANeed identity information be replaced with positional information, to IDMS
AThe mapping relations of inquiry identity and position.IDMS
AInquiry inserts the map information of sign and home domain, finds that its home domain is IDMS
BSo, to IDMS
BSend inquiry request message.If terminal B2 is mobility terminal (mobility is stronger), then home domain can not preserved mapping relations, only preserves the current field address, so IDMS
BTo IDMS
CSend query messages, IDMS
CWith the identity of terminal B2 and location map to sending to IDMS
B, return to IDMS then
A, IDMS
AThe result is returned to ASR
AIf the terminal is the stationarity terminal, promptly mobility is not strong, has just moved to foreign lands, so home domain IDMS
BCan preserve its mapping relations, directly mapping relations returned to IDMS
A, return to ASR then
AASR
AAfter receiving mapping message, packet is forwarded after identity information is mapped as positional information, arrive opposite end ASR through route
C
When the communication sources end when the mapping server query mappings of opposite end concerns; Can the mapping relations of self be reported to the opposite end mapping server; Just needn't initiate inquiry to source end home domain again when Correspondent Node is mapped as identity information with positional information like this, to reduce communication delay.
One side does not shift out home domain when communication, only needs when inquiring about so directly to inquire about to home domain, no longer involves current management domain.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (5)
1. the implementation method of identity and location map relation is characterized in that said method comprises:
Step 1: network is divided into management domain;
Step 2: at least one mapping server that links to each other with other management domains of configuration in each management domain; Store home domain information in the said mapping server; Said home domain information is meant, when home domain access-in management territory, gives the access sign of home domain and the mapping relations that home domain forms by inserting sign configuration management central dispense; Home domain information comprises access sign, home domain field, identifying code and home domain;
Step 3: when the home domain information of said mapping server changes, to the reciprocity mapping server transmission updating message of said mapping server; Said peer server is the mapping server of the management domain adjacent with the management domain at mapping server place; After the mapping server session is set up successfully in the adjacent domains, reciprocity mapping server is added in the reciprocity mapping server tabulation; Mapping server is communicated by letter with reciprocity mapping server through ICP/IP protocol; Regularly exchange keep-alive message between the equity mapping server, to confirm existing of peer-to-peer; Said keep-alive message is a kind of fixed format information of regular transmission, after mapping server is set up the relation of equity, through regularly sending the existence that keep-alive message is confirmed peer-to-peer mutually; When mapping server does not receive the keep-alive message of peer-to-peer within certain hour, explain that then this peer relationship lost efficacy, with its deletion in reciprocity mapping server tabulation, no longer transmit updating message later on to it;
Step 4: said reciprocity mapping server upgrades the home domain information of self storing according to updating message;
Step 5: the reciprocity mapping server to said reciprocity mapping server is transmitted updating message, and all mapping servers in network are received said updating message and upgraded the home domain information of self storing.
2. the implementation method of a kind of identity according to claim 1 and location map relation is characterized in that said access sign adopts the home domain field of setting numerical value that it is divided into continuous access home block.
3. the implementation method of a kind of identity according to claim 1 and location map relation, the home domain information that it is characterized in that said mapping server change the renewal that is meant home domain information on the mapping server, add or cancel.
4. the implementation method of a kind of identity according to claim 1 and location map relation is characterized in that said updating message comprises the attribute that starts, purpose attribute, management domain sequence and the home domain information that changes; Wherein, the said attribute that starts is generated by the mapping server that sends the home domain information that changes at first, and in the updating message process of transmitting, remains unchanged; Said purpose attribute flags is once transmitted the mapping server of updating message; After the mapping server of forwarding updating message receives the home domain information of this variation; If comprise the reciprocity mapping server of the mapping server of this forwarding updating message in the purpose attribute, then no longer transmit updating message to reciprocity mapping server; The mapping server of process in the home domain information repeating process that the management domain sequence mark changes; Existed in the management domain sequence if receive the mapping server of the home domain information of this variation, then this mapping server is no longer handled the home domain information of this variation.
5. the implementation method of a kind of identity according to claim 1 and location map relation; It is characterized in that said reciprocity mapping server is according to the home domain information that changes; Upgrading the home domain information of self storing specifically is; Access sign in the length of home domain field appointment is carried out the longest coupling, if the sign of the access in the home domain field length is different, the home domain information that then will change joins in the home domain message store table; If it is identical to insert sign, then check home domain, if home domain is different, then change the home domain content in the home domain information; Home domain information if home domain is identical to this variation does not process.
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| CN102368728B (en) * | 2011-09-20 | 2014-06-11 | 中国人民解放军国防科学技术大学 | Automatic configuration method of routing protocol, routing device and authorization server |
| WO2014000195A1 (en) * | 2012-06-27 | 2014-01-03 | 中兴通讯股份有限公司 | Access authentication method, apparatus, and system |
| CN104050015B (en) * | 2014-06-27 | 2018-01-19 | 国家计算机网络与信息安全管理中心 | A kind of system of virtual machine image storage distribution |
| CN104901835B (en) * | 2015-05-22 | 2018-06-15 | 新华三技术有限公司 | Position and mapping server configuration method and device in mark separated protocol network |
| CN108093084B (en) * | 2018-01-11 | 2020-09-08 | 中国科学院声学研究所 | Dynamic position information local updating and inquiring method for mobile network entity |
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|---|---|---|---|---|
| CN101123536A (en) * | 2007-09-19 | 2008-02-13 | 北京交通大学 | Method for managing integrated network locations |
| CN101478552A (en) * | 2009-02-19 | 2009-07-08 | 北京交通大学 | Position management method and system implementing multi-home terminal in integrated network |
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| US8428581B2 (en) * | 2007-06-20 | 2013-04-23 | Qualcomm Incorporated | Method and apparatus for supporting location services for a roaming mobile station |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123536A (en) * | 2007-09-19 | 2008-02-13 | 北京交通大学 | Method for managing integrated network locations |
| CN101478552A (en) * | 2009-02-19 | 2009-07-08 | 北京交通大学 | Position management method and system implementing multi-home terminal in integrated network |
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