CN103095580A

CN103095580A - Location information query method, policy server, location server and system

Info

Publication number: CN103095580A
Application number: CN2011103320455A
Authority: CN
Inventors: 周娜; 霍玉臻; 沈岷; 江鸿
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-10-27
Filing date: 2011-10-27
Publication date: 2013-05-08
Anticipated expiration: 2031-10-27
Also published as: CN103095580B

Abstract

The invention discloses a location information query method, a policy server, a location server and a system. The location information query method comprises that when a first terminal sends data to a second terminal through a first access gateway, the first access gateway requires location information of the second terminal respectively from the policy server and the location server, and according to intersection of first location information returned from the location server and second location information returned from the policy server, the first access gateway sends the data to an access gateway of the second terminal corresponding to the location information in the intersection. By means of the location information query method, the policy server, the location server and the system, the problem that under the condition that a terminal has several location information sections, message transmission abnormity happens when a communication corresponding end can not obtain the right location information of the terminal can be solved.

Description

A kind of location information inquiry method, strategic server, location server and system

Technical field

The present invention relates to communication technical field, relate in particular to a kind of location information inquiry method, strategic server, location server and system.

Background technology

The existing widely used TCP/IP in internet (Transmission Control Protocol/Internet Protocol, transmission control protocol/internet protocol) in agreement, the IP address has dual-use function, both as the station location marker of communication terminal host network interface in network topology of network layer, again as the identify label of transport layer host network interface.But when host mobility was more and more general, the semanteme overload defective of this IP address was day by day obvious.When the IP address of main frame changed, not only route changed, and the identify label of communication terminal main frame also changes, and will cause like this routing overhead more and more heavier, and the variation of host identification also will cause using and the interruption that is connected.The purpose that identify label and position separation problem propose is for the semanteme overload that solves the IP address and the problem such as routing overhead is serious, the dual-use function of IP address is separated, realize the support that the problems such as exchanging visit between the heterogeneous networks zone in routing overhead and Next Generation Internet are dynamically heavily distributed, alleviated in mobility, many locals property, IP address.

Fig. 1 shows a kind of architectures of communication networks, and its terminal can be one or more in mobile terminal, fixed terminal and roam terminals, as mobile phone, landline telephone, computer and server etc.Access Network is used to terminal that two layers of (physical layer and link layer) access means, the physics access link between maintenance terminal and IAD are provided.IAD is used to the terminal distribution positional information, and the sign of maintenance terminal and position map information carry out to the position server positional information that (also can be described as location register) and inquiry terminal are registered in the position, and the route and the forwarding that realize data message.The positional information that IAD distributes is pointed to this IAD, also namely comprises the address information of this IAD, and during as the destination address of data message, this data message will be routed to this IAD with this positional information.Identify label and the positional information map information of home subscriber terminal preserved and safeguarded to location server for the treatment of registration, cancellation and inquiry to terminal positional information;

When terminal and opposite end communicated, IAD received that uplink data messages will carry out the positional information encapsulation and forward.Particularly, positional information at the local search Correspondent Node, as inquire, with the positional information of Correspondent Node as destination address, comprise in the data message of terminal iidentification and Correspondent Node sign as source address is encapsulated in take terminal positional information, be forwarded to the IAD of Correspondent Node access through the broad sense Forwarding plane.As the inquiry less than, arrive the Correspondent Node home location server and inquire the positional information of Correspondent Node and be kept at this locality.At this moment, after can encapsulating the positional information of terminal in message, be forwarded to the broad sense Forwarding plane by mapping forward plane, perhaps, after inquiring the positional information of Correspondent Node, then by this IAD by above-mentioned at local search the mode during to the positional information of Correspondent Node carry out positional information encapsulation and forward process.At down direction, IAD is separated the positional information encapsulation after receiving the data message that the broad sense Forwarding plane sends, and sends to terminal after peelling off positional information wherein.

Can find out, IAD need to be this terminal distribution positional information in order to realize the normal forwarding of message when terminal accesses, to the positional information of server registration this positional information in position with this terminal in the renewal location server.IAD also needs sign and the positional information map information of maintenance terminal and Correspondent Node thereof, realizes the positional information encapsulation to message.In one example, IAD is the correspondence information of this terminal of each terminal maintenance and Correspondent Node, be called in literary composition this terminal to client information, this opposite end information comprises the correspondence relationship information of this terminal iidentification and Correspondent Node sign, sign and the positional information map information that can also comprise this terminal, simultaneously, sign and the positional information map information of the Correspondent Node of all terminals safeguarded in the IAD unification.Certainly, IAD safeguards respectively that for each terminal the sign of these all Correspondent Nodes of terminal and positional information map information also are fine, wherein comprised terminal to client information.Maintenance to client information, is for when terminal is switched, and the IAD of incision one side can determine which Correspondent Node is this terminal have, and upgrades in order to carry out the position thereby can send the new positional information of this terminal to the IAD of Correspondent Node access.After the IAD of Correspondent Node access was completed renewal, the data message that just Correspondent Node can be sent was routed directly to the IAD that this terminal switches to.

At present, terminal can have a plurality of connections (as shown in Figure 1) simultaneously, may exist a plurality of IADs this moment is a plurality of positional informations of terminal distribution, for same terminal, may there be the situation of the corresponding a plurality of positional informations of a terminal iidentification in location server, owing to having considered application or Business Stream to have the association attributeses such as quality of service, charging in the process that is connected to foundation, only allow the corresponding application of transmission or Business Stream.When the opposite end sends data to terminal, the link information that the opposite end IAD is deposited in can't the demarcation of location server or attribute or the characteristics of positional information, can't determine which positional information this data flow should select, via which connection transmit, thereby make data transfer path to be communicated with or data transmission quality can't be ensured.

This patent is equally applicable to proxy-mobile IP (Proxy MIP, referred to as PMIP) scene, shown in Fig. 1 a is the logical architecture of PMIP agreement, comprise mobile node (Mobile Node, referred to as MN), Correspondent Node (Correspondent Node, referred to as CN), Mobile Access Gateway (Mobile Access Gateway is referred to as MAG) and local mobile anchor point (Local Mobility Anchor is referred to as LMA).Wherein the Correspondent Node of MN such as CN and CN ' can be stationary nodes, can be also mobile nodes, namely have corresponding MAG and LMA.MAG is the first hop router of MN, is the PMIP binding (PMIP Binding) between the anchor point LMA of its distribution Care-of Address (Care of Address is referred to as CoA) and replacement MN execution and MN when its Main Function is included in the MN access.LMA is as the anchor point of MN, and its Main Function is included as MN and distributes home address (Home of Address is referred to as HoA) and process above-mentioned PMIP binding.The main purpose of the PMIP binding of carrying out between MAG and LMA is to allow both sides all know the other side's address, above-mentioned CoA and HoA, and will be kept at this locality.In addition, in the binding procedure of carrying out PMIP, also set up a bidirectional tunnel for MN between MAG and LMA.What deserves to be explained is, MN gets at last IP address is that LMA is the HoA of its distribution.In common network design, MAG generally is positioned at topological lower position, such as the edge that is positioned at metropolitan area network; LMA generally is positioned at topological higher position, such as economizing the core of doing net.In fact often be connected by multiple router hops between MAG and LMA.

The mobile management of PMIP agreement is embodied in along with the mobile of MN can change the MAG that is currently connected to, and keeps simultaneously the IP address (being HoA) of MN constant.As shown in Fig. 1 b, the MAG that changes current connection refers to that source MAG (source MAG is referred to as the sMAG) change/switching from previous connection is connected to target MAG (target MAG is referred to as tMAG).After changing to tMAG, tMAG is that MN distributes a new CoA, and for the PMIP binding between the anchor point LMA of MN execution and MN, upgrades and above mention the information that both sides preserve, and set up new bidirectional tunnel for MN between t-MAG and LMA.

Fig. 1 b is depicted as the process schematic diagram of transmitting-receiving IP message between MN and CN.As shown in Fig. 1 b, the IP datagram literary composition between MN and CN must be through the tunnel between sMAG and LMA, necessary through the tunnel between tMAG and LMA after switching before switching.

The transmission path waste problem that exists in order to solve existing PMIP mechanism, and then a series of adverse consequencess that cause need to be transformed existing PMIP mechanism, and Fig. 1 c is improved PMIP protocol infrastructure.The network element that this framework comprises still is mobile node MN, Correspondent Node CN, Mobile Access Gateway MAG and LMA.Wherein CN can be stationary nodes, can be also mobile node, namely has corresponding MAG and LMA.MAG is the first hop router of MN, its Main Function distributes Care-of Address CoA except the MN that is in existing PMIP framework, and outside the PMIP binding between the anchor point LMA of replacement MN execution and MN, also need to possess following function: to the LMA inquiry, the address of the MAG (MAG-CN) of the current connection of acquisition Correspondent Node CN or the Care-of Address CoA of CN.Set up bidirectional tunnel between the MAG of the MAG of MN (in literary composition also referred to as MAG-MN) and CN (in literary composition also referred to as MAG-CN), forward the IP datagram literary composition between MN and CN.LMA is not re-used as the anchor point of MN, and the IP datagram literary composition between MN and CN also no longer needs through LMA.LMA need to preserve the address of current MAG-MN and/or the CoA of MN, and with MN as index, for example with home network prefix (the Home Network Prefix of HoA or the MN of MN, referred to as HNP) as index, inquire about according to the relevant information of MN for the Correspondent Node CN of MN or the MAG of CN.

Fig. 1 d is depicted as when using improved PMIP framework, the process schematic diagram of transmitting-receiving IP message between MN and CN.IP datagram literary composition between MN and CN needs through the tunnel between MAG-MN and MAG-CN.When MN sent up IP message to CN, consistent with existing PMIP mechanism, MN need to send to MAG-MN with the IP message.Follow-up and existing PMIP mechanism difference is that MAG-MN need to inquire about the address of MAG-CN in the present invention.In the address that inquires MAG-CN (behind the IP address as MAG-CN), MAG-MN as terminal point, sets up MAG-MN to the tunnel of MAG-CN (as, IP in IP tunnel) with the address of MAG-CN, simultaneously the above-mentioned IP message is placed in the tunnel, directly sends to MAG-CN.After MAG-CN receives the IP message that transmits in the tunnel, the IP message is sent to CN.Need to prove, MAG-MN also can inquire about the CoA of CN, and the address with the above-mentioned MAG-CN of the CoA address replacement of CN also can reach identical purpose.At this moment, MAG-MN uses CoA as terminal point, sets up MAG-MN to the tunnel of MAG-CN, and effect is equal to.Also what deserves to be explained is, at first MAG-MN inquires about in local cache, if inquiry is less than inquiring about to other network elements again when the address (or CoA of CN) of the MAG-CN of inquiry CN.The anchor point LMA (LMA-CN) that for example, can arrive CN inquires about according to the HoA of CN.After inquiring required result, MAG-MN is buffered in this locality with Query Result again.It is can avoid removing to carry out query manipulation to other network elements frequently that Query Result is buffered in local benefit.As a same reason, when CN sends downstream IP message to MN, also use above-mentioned similar method, principle is identical, repeats no more.Use this method of the present invention, between MN and CN the path of transmitting-receiving IP message become for MN＜-〉 MAG-MN＜-〉 MAG-MN＜-〉 CN, need not the anchor point LMA network element through MN (perhaps MN and CN).

Similarly, in the situation that this PMIP terminal has a plurality of connections simultaneously, still there are a plurality of positional informations in same terminal in location server series of problems can occur this moment, the characteristics that need to consider application or Business Stream are selected correct terminal positional information, transmit corresponding data or Business Stream, reduce transfer of data anomaly, the effective guarantee of transfer of data is provided.

Summary of the invention

The technical problem that the present invention solves is to provide a kind of location information inquiry method, strategic server, location server and system, solution exists in terminal under the scene of a plurality of positional informations, because Correspondent Node can't be learned the abnormal problem of message transmissions that the correct positional information of terminal causes.

For solving the problems of the technologies described above, the invention provides a kind of location information inquiry method, be applied to the identity locator separation network,

When first terminal sent data by the first IAD to the second terminal, described the first IAD was respectively to the positional information of strategic server and described the second terminal of location server request;

The common factor of the second place information that the primary importance information that described the first IAD returns according to described location server and described strategic server return is sent to described data the IAD of the second terminal corresponding to positional information in described common factor.

Further, described the first IAD is according to the terminal iidentification of described the second terminal, to described location server request position information;

Positional information corresponding to terminal iidentification that described location server returns to described the second terminal to described the first IAD, i.e. described primary importance information, described primary importance information comprises one or more positional informations of described the second terminal.

Further, described the first IAD carries the terminal iidentification of policy information and/or described the second terminal during to described strategic server requesting terminal positional information;

Described strategic server returns to described policy information and/or positional information corresponding to described terminal iidentification, i.e. described second place information according to the reference by location strategy to described the first IAD.

Further, described reference by location strategy comprises: to use or business or connect or policy information that the position is relevant and the corresponding relation of one or more positional informations; Perhaps, the corresponding relation of terminal iidentification and one or more positional informations.

Further, described policy information comprises a kind of of following content or its combination in any:

Access style, priority, network title, PLMN ID, qos parameter, charge information, Correspondent Node information.

Further, described policy information is:

The information of Correspondent Node network;

Perhaps, the information of terminal network, and there is corresponding relation in the Information And Communication opposite end network of terminal network.

Further, described network title comprises: APN, domain name/sign, PDN name/sign;

Described qos parameter comprises: QCI;

Described charge information comprises: rate, rate grade;

Described Correspondent Node information comprises Correspondent Node: sign, port or address.

Further, described the first IAD is during to described strategic server requesting terminal positional information, described strategic server returns to positional information corresponding to described the first IAD, i.e. described second place information according to the reference by location strategy of preserving to described the first IAD;

Wherein, described reference by location strategy comprises: the corresponding relation of Correspondent Node IAD and one or more positional informations.

Further, described method also comprises:

Described the first IAD is cached to this locality with the identification information of described the second terminal and the mapping relations of described primary importance information after receiving the described primary importance information that described location server returns.

Further, described method also comprises:

When described the first IAD sends data to described the second terminal, the described primary importance information of receiving is sent to described strategic server, and the literary composition or comprise of reporting for the first time report for the first time the part message of literary composition or all message send to described location server, send described strategic server to by described location server;

Described strategic server is according to the described primary importance information of receiving, and the common factor of the described second place information that draws according to the reference by location strategy, with the message repeating that the receives IAD to the second terminal corresponding to the positional information in described common factor.

Further, described method also comprises:

When described the first IAD sends data to described the second terminal, the described second place information of receiving is sent to described location server, and will report for the first time literary composition or comprise the part message of the literary composition of reporting for the first time or all message send to described location server;

Described location server is according to the common factor of described second place information and described primary importance information, with the message repeating that the receives IAD to the second terminal corresponding to the positional information in described common factor.

The present invention also provides a kind of location information inquiry method, is applied to the identity locator separation network,

When first terminal sent data by the first IAD to the second terminal, described the first IAD was to the positional information of described the second terminal of location server request;

Described the first IAD receives the primary importance information that described location server returns, and to the positional information of described the second terminal of strategic server request, and carries described primary importance information;

Described strategic server obtains second place information according to the reference by location strategy, and the common factor of described primary importance information and described second place information is returned to described the first IAD;

Described the first IAD is sent to described data the IAD of the second terminal corresponding to positional information in described common factor.

Further, described the first IAD according to the terminal iidentification of described the second terminal to described location server request position information; Positional information corresponding to terminal iidentification that described location server returns to described the second terminal to described the first IAD, i.e. described primary importance information, described primary importance information comprises one or more positional informations of described the second terminal;

Described strategic server returns to described policy information and/or positional information corresponding to described terminal iidentification, i.e. described second place information according to the reference by location strategy to described the first IAD; Wherein, described reference by location strategy comprises: to use or business or connect or policy information that the position is relevant and the corresponding relation of one or more positional informations; Perhaps, the corresponding relation of terminal iidentification and one or more positional informations; Perhaps, the corresponding relation of Correspondent Node IAD and one or more positional informations.

Further, described method also comprises:

When described the first IAD sends data to described the second terminal, with report for the first time literary composition or comprise the part message of the literary composition of reporting for the first time or all message send to described location server, send described strategic server to by described location server;

Described strategic server is with the message repeating that the receives IAD to the second terminal corresponding to the positional information in described common factor.

When first terminal sent data by the first IAD to the second terminal, described the first IAD was to the positional information of described the second terminal of strategic server request;

Described the first IAD receives the second place information that described strategic server returns, and to the positional information of described the second terminal of location server request, and carries described second place information;

The primary importance information of described the second terminal of described location server inquiry, and the common factor of described primary importance information and described second place information is returned to described the first IAD;

Further, described method also comprises:

When described the first IAD sends data to described the second terminal, with report for the first time literary composition or comprise the part message of the literary composition of reporting for the first time or all message send to described location server;

Described location server is with the message repeating that the receives IAD to the second terminal corresponding to the positional information in described common factor.

Described the first IAD receives the primary importance information that described location server returns, and simultaneously, obtains second place information according to the reference by location strategy that strategic server sends or preserve this locality;

Described the first IAD draws the common factor of described primary importance information and described second place information, and described data is sent to the IAD of the second terminal corresponding to positional information in described common factor.

Further, described reference by location strategy comprises: to use or business or connect or policy information that the position is relevant and the corresponding relation of one or more positional informations; Perhaps, the corresponding relation of terminal iidentification and one or more positional informations; Perhaps, the corresponding relation of Correspondent Node IAD and one or more positional informations.

The present invention also provides a kind of strategic server, comprises tactful maintenance module and query requests processing module, wherein:

Described tactful maintenance module is used for, the maintenance position reference policy; Wherein, described reference by location strategy comprises: to use or business or connect or policy information that the position is relevant and the corresponding relation of one or more positional informations; Perhaps, the corresponding relation of terminal iidentification and one or more positional informations; Perhaps, the corresponding relation of Correspondent Node IAD and one or more positional informations;

Described query requests processing module is used for, and when receiving the location information request that IAD initiates, returns to corresponding positional information to the IAD of described initiation request.

Further, described query requests processing module is used for, when receiving the location information request of IAD initiation, information according to the IAD of described initiation request, perhaps according to the policy information that carries in described request and/or terminal iidentification, IAD to described initiation request returns to second place information, and described second place information is described IAD or described policy information and/or positional information corresponding to terminal iidentification.

Further, described query requests processing module is used for, receive that described IAD initiates carry the location information request of primary importance information the time,

Information according to the IAD of described initiation request, perhaps according to the policy information that carries in described location information request and/or terminal iidentification, obtain second place information, described second place information is described IAD or described policy information and/or positional information corresponding to terminal iidentification;

And draw the common factor of described primary importance information and described second place information according to the described primary importance information of carrying in described location information request, and the positional information in described common factor is returned to the IAD of described initiation request.

Further, described tactful maintenance module also is used for, and the described reference by location strategy of safeguarding is sent to the IAD of appointment.

The present invention also provides a kind of location server, comprises the map information maintenance unit, and positional information returns to the unit, wherein:

Described map information maintenance unit, the terminal iidentification of maintenance terminal and the mapping relations of positional information;

Described positional information is returned to the unit and is used for, and when receiving the location information request of IAD initiation, to described map information maintenance unit inquiry, and returns to corresponding positional information to the IAD of described initiation request.

Further, described positional information is returned to the unit and is used for, when receiving the location information request of IAD initiation, inquire about to described map information maintenance unit according to the terminal iidentification that carries in described location information request, obtain primary importance information, described primary importance information is one or more positional informations corresponding to described terminal iidentification; And return to described primary importance information to the IAD of described initiation request.

Further, described positional information is returned to the unit and is used for, when receiving the location information request of IAD initiation, according to the terminal iidentification that carries in described location information request and second place information, obtain primary importance information to described map information maintenance unit inquiry, described primary importance information is one or more positional informations corresponding to described terminal iidentification; And draw the common factor of described primary importance information and described second place information, and the positional information in described common factor is returned to the IAD of described initiation request.

The present invention also provides a kind of place information inquiry system, comprises IAD, strategic server, location server; Described IAD comprises place information inquiry module and data forwarding module, and described strategic server comprises the query requests processing module, and described location server comprises that positional information returns to the unit, wherein:

Described place information inquiry module is used for, when described IAD during to the terminal initiating communication, to the positional information of strategic server and/or the described terminal of location server request;

Described positional information is returned to the unit and is used for, and when receiving the location information request that IAD initiates, returns to primary importance information to the IAD of described initiation request;

Described query requests processing module is used for, and when receiving the location information request that IAD initiates, returns to second place information to the IAD of described initiation request;

Described data forwarding module is used for, and according to the common factor of described primary importance information and described second place information, described data is sent to the IAD of terminal corresponding to positional information in described common factor.

Further, also comprise the map information maintenance unit in described location server,

Described map information maintenance unit is used for, the terminal iidentification of maintenance terminal and the mapping relations of positional information;

Described positional information is returned to the unit and is used for, when receiving the location information request of IAD initiation, inquire about to described map information maintenance unit according to the terminal iidentification that carries in described location information request, obtain primary importance information, described primary importance information is one or more positional informations corresponding to described terminal iidentification.

Further, described positional information is returned to the unit and is used for, after obtaining described primary importance information to described map information maintenance unit inquiry,

IAD to described initiation request returns to described primary importance information;

Perhaps, according to the second place information of carrying in described location information request, draw the common factor of described primary importance information and described second place information, and the positional information in described common factor is returned to the IAD of described initiation request.

Further, also comprise tactful maintenance module in described strategic server,

Described query requests processing module is used for, when receiving the location information request of IAD initiation, information according to the IAD of described initiation request, perhaps according to the policy information that carries in described request and/or terminal iidentification, obtain described second place information, described second place information is described IAD or described policy information and/or positional information corresponding to terminal iidentification.

Further, described query requests processing module is used for, after obtaining described second place information,

IAD to described initiation request returns to described second place information;

Perhaps, according to the primary importance information of carrying in described location information request, draw the common factor of described primary importance information and described second place information, and the positional information in described common factor is returned to the IAD of described initiation request.

The present invention proposes a kind of terminal exists in multi-link situation, the solution of inquiry terminal positional information, having solved terminal exists under the scene of a plurality of positional informations, because Correspondent Node can't be learned the abnormal problem of message transmissions that the correct positional information of terminal causes, thereby effectively strengthened user's experience.

Description of drawings

Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:

Fig. 1 be in prior art in communication network terminal have multi-link schematic diagram;

Fig. 1 a is the logical architecture schematic diagram of PMIP agreement in prior art;

Fig. 1 b is the process schematic diagram of transmitting-receiving IP message between MN and CN in prior art;

Fig. 1 c is improved PMIP protocol infrastructure in prior art;

Fig. 1 d is when using improved PMIP framework in prior art, the process schematic diagram of transmitting-receiving IP message between MN and CN;

Fig. 2 is the communications network system configuration diagram one of the embodiment of the present invention;

Fig. 3 is the communications network system configuration diagram two of the embodiment of the present invention;

Fig. 4 is the communications network system configuration diagram three of the embodiment of the present invention;

Fig. 5 is in the embodiment of the present invention, and based on the scene of Fig. 2 system architecture, the flow chart one of query script is carried out in the opposite end to terminal positional information when sending data to terminal;

Fig. 6 is in the embodiment of the present invention, and based on the scene of Fig. 3 system architecture, the flowchart 2 of query script is carried out in the opposite end to terminal positional information when sending data to terminal;

Fig. 7 is in the embodiment of the present invention, and based on the scene of Fig. 2 system architecture, the flow chart 3 of query script is carried out in the opposite end to terminal positional information when sending data to terminal;

Fig. 8 is in the embodiment of the present invention, and based on the scene of Fig. 4 system architecture, the flow chart four of query script is carried out in the opposite end to terminal positional information when sending data to terminal.

Embodiment

In present embodiment, increased the strategic server function on the basis of existing communication system, deposit in this strategic server and use or business or connect or policy information that the position is relevant, described policy information can be relevant to terminal iidentification the strategy of terminal (namely based on), also can have nothing to do with terminal iidentification.When sending data in the opposite end to terminal, according to using or business or connect or position characteristics or terminal iidentification provide the reference by location of terminal.

This strategic server can be connected with location server or IAD, its position and connected mode such as Fig. 2, Fig. 3 and shown in Figure 4 in communication network.Perhaps, strategic server also can close with the opposite end IAD and establish.

Present embodiment provides a kind of location information inquiry method, adopts following technical scheme:

When first terminal sent data by the first IAD to the second terminal, the first IAD was to the positional information of strategic server and/or location server request the second terminal;

The common factor of the second place information that the primary importance information that the first IAD returns according to location server and strategic server return sends data to the IAD of the second terminal corresponding to positional information in common factor.

Particularly, the first IAD obtains the common factor of described primary importance information and second place information, mainly contains following several implementation:

One, the first IAD to the strategic server initial position information request, carries the primary importance information that receives after receiving the primary importance information that location server returns; Strategic server returns to the opposite end IAD with it after drawing the common factor of primary importance information and second place information;

Two, the first IADs to the location server initial position information request, carry the second place information that receives after receiving the primary importance information that strategic server returns; Location server returns to the opposite end IAD with it after drawing the common factor of primary importance information and second place information;

Three, the second place information that the primary importance information that IAD returns according to location server and strategic server return oneself draws the common factor of primary importance information and second place information.

Further, the first IAD the literary composition or comprise of reporting for the first time can be reported for the first time the part message of literary composition or all message send to strategic server, after the strategic server decision-making draws the common factor of primary importance information and second place information, with the message repeating that the receives IAD to corresponding the second terminal, the IAD of the second terminal that the positional information in namely should occuring simultaneously is corresponding;

Perhaps, the first IAD will report for the first time literary composition or comprise report for the first time the part message of literary composition or all message send to location server, location server sends strategic server to, after strategic server draws the common factor of primary importance information and second place information, with the message repeating that the receives IAD to corresponding the second terminal;

Or, the first IAD will report for the first time literary composition or comprise report for the first time the part message of literary composition or all message send to location server, after location server draws the common factor of primary importance information and second place information, with the message repeating that the receives IAD to corresponding the second terminal.

For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.Need to prove, in the situation that do not conflict, the embodiment in the application and the feature in embodiment be combination in any mutually.

Embodiment one

Fig. 5 is based on the scene of Fig. 2 system architecture, and the flow chart of query script is carried out in the opposite end to terminal positional information when sending data to terminal.Concrete steps are described below:

Step 500, terminal are registered on location server by terminal IAD 1 (MAG-MN1) and terminal IAD 2 (MAG-MN2).

Step 501, Correspondent Node (CN) sends data to terminal, and these data arrive opposite end IAD (MAG-CN).

Step 502, in the situation that buffer memory terminal iidentification position map information not, the opposite end IAD can carry out buffer memory to these data; This step is optional.

Step 503, opposite end IAD are to location server requesting query terminal positional information, and carried terminal identifies.

Step 504, location server obtains positional information according to terminal iidentification, and returns to response message, carries positional information, and this positional information can be one or more record, be one or more positional informations of terminal, herein also referred to as primary importance information.

Step 505, the opposite end IAD is to strategic server requesting query terminal positional information, and can carry the opposite end IAD and inquire about the primary importance information that obtains in local cache or response message that return from step 504, can also carry policy information, perhaps terminal iidentification.

Step 506, strategic server obtain or select the more specific location information of terminal according to step 505 information, this positional information can be one or more positional informations.

Particularly, if the reference by location strategy of depositing in strategic server is positional information and the relation (a plurality of positions as corresponding in certain policy information) of policy information, carry policy information and primary importance information in step 505, implementation can be: at first find corresponding a plurality of positions (herein also referred to as second place information) by policy information, the common factor of the primary importance information that these positions and step 505 are carried is desired first terminal position.

Perhaps, if the reference by location strategy of depositing in strategic server is positional information and the relation (a plurality of positions as corresponding in certain policy information) of policy information, carry policy information in step 505, implementation can be: at first find corresponding a plurality of positions by policy information, these positions are returned to MAG-CN, and the common factor of the primary importance information that the second place information that MAG-CN comparison strategy server returns and location server return is desired first terminal position.

Perhaps, if the reference by location strategy of depositing in strategic server is positional information and the relation of policy information and/or MAG-CN (as the corresponding a plurality of positions of certain strategy), carry primary importance information in step 505, implementation can be: at first the address by MAG-CN or identification information and/or policy information find corresponding a plurality of positions, and the common factor of the primary importance information of carrying in these positions and step 505 is desired first terminal position.

In addition, if the reference by location strategy that strategic server is deposited is the corresponding relation of terminal identification information and positional information, can obtain corresponding one or more positions according to the terminal iidentification that carries in step 505.

Step 507, strategic server returns to response message to the opposite end IAD, carries positional information, and this positional information can be one or more positional informations.

Step 508, the opposite end IAD sends (as, terminal IAD 1) with data to certain positional information of obtaining or all positional informations, and terminal IAD 1 sends to terminal with these data.Simultaneously, the opposite end IAD can buffer memory opposite end sign, terminal iidentification, terminal positional information, conversation strategy information, in order to the opposite end is routed to the IAD of terminal to the subsequent packet that terminal sends, and need not to carry out the operation of inquiring about to location server alternatively.

Embodiment two

In another embodiment, in the step 505 of above-described embodiment one, the IAD literary composition or comprise of reporting for the first time can be reported for the first time part message or all messages of literary composition in opposite end sends strategic server (the remaining message of buffer memory on the IAD of opposite end) to, strategic server is sent to message the IAD of terminal after the positional information that obtains terminal, this IAD forwards the packet then to terminal.Other processing is consistent with above-described embodiment one, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment three

Strategic server can close with the opposite end IAD and establish, and namely has local policy on the IAD of opposite end.This moment, step 505 and step 506 were the inner realization of IAD, and other steps are consistent with embodiment one or embodiment two, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment four

Strategic server and opposite end IAD set up separately, when IAD powers on, strategic server with policy distribution to IAD, in this mode the opposite end to location server inquire about, the buffer memory of map information, other processing is consistent with above-described embodiment three, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment five

Fig. 6 is based on the scene of system architecture shown in Figure 3, and the flow chart of query script is carried out in the opposite end to terminal positional information when sending data to terminal.Concrete steps are described below:

Step 600, terminal are registered on location server by IAD 1 and IAD 2.

Step 601, Correspondent Node sends data to terminal, and these data arrive the opposite end IAD.

Step 602, in the situation that buffer memory terminal iidentification position map information not, the opposite end IAD can carry out buffer memory to these data; This step is optional.

Step 603, opposite end IAD are to location server requesting query terminal positional information, and the carried terminal sign can be with policy information.

Step 604, location server is according to the information inquiry positional information in step 603 (this positional information can be many records, be a plurality of positional informations of terminal), and to strategic server requesting query terminal positional information, carry a plurality of positional informations, can be with policy information, can the tape terminal sign.

Step 605, strategic server obtain or select the more specific location information (this positional information can be one or more positional informations) of terminal according to step 604 information.

Step 606, strategic server returns to response message to location server, carries positional information (this positional information can be one or more positional informations).

Step 607, location server returns to response message to the opposite end IAD, carries positional information (this positional information can be one or more positional informations).

Step 608, the opposite end IAD sends (as, terminal IAD 1) with data to certain positional information of obtaining or all positional informations, and terminal IAD 1 sends to terminal with these data.Simultaneously, the opposite end IAD can buffer memory opposite end sign, terminal iidentification, terminal positional information, conversation strategy information, in order to the opposite end is routed to the IAD of terminal to the subsequent packet that terminal sends, and need not to carry out the operation of inquiring about to location server alternatively.

Embodiment six

in another embodiment, in the step 603 of above-described embodiment five, the IAD literary composition or comprise of reporting for the first time can be reported for the first time part message or all messages of literary composition in opposite end sends location server (the remaining message of buffer memory on the IAD of opposite end) to, perhaps location server continues message is sent to strategic server (the remaining message of buffer memory on the IAD of opposite end) in step 604, strategic server is sent to message the IAD of terminal in step 605 or location server after the positional information of step 606 acquisition terminal, this IAD forwards the packet then to terminal.Other processes with above-described embodiment and causes May Day, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment seven

Fig. 7 is based on the scene of system architecture shown in Figure 2, and the flow chart of query script is carried out in the opposite end to terminal positional information when sending data to terminal.Concrete steps are described below:

Step 700, terminal are registered on location server by IAD 1 and IAD 2.

Step 701, Correspondent Node sends data to terminal, and these data arrive the opposite end IAD.

Step 702, in the situation that buffer memory terminal iidentification position map information not, the opposite end IAD can carry out buffer memory to these data; This step is optional.

Step 703, opposite end IAD are to strategic server requesting query terminal positional information, and carried terminal identifies and/or policy information.

Step 704, strategic server obtains positional information (this positional information can be many records, be a plurality of positional informations or position section) according to step 703 carry information;

Step 705, strategic server returns to response message to the opposite end IAD, carries positional information (this positional information can be many records, be a plurality of positional informations or position section).

Step 706, opposite end IAD be to location server requesting query terminal positional information, carried terminal sign, a plurality of positional information or position section.

Step 707, location server returns to response message to the opposite end IAD, carries positional information (this positional information can be one or more positional informations).

Step 708, the opposite end IAD sends (as, terminal IAD 1) with data to certain positional information of obtaining or all positional informations, and terminal IAD 1 sends to terminal with these data.Simultaneously, the opposite end IAD can buffer memory opposite end sign, terminal iidentification, terminal positional information, conversation strategy information, in order to the opposite end is routed to the IAD of terminal to the subsequent packet that terminal sends, and need not to carry out the operation of inquiring about to location server alternatively.

Embodiment eight

In another embodiment, in the step 706 of above-described embodiment seven, the IAD literary composition or comprise of reporting for the first time can be reported for the first time part message or all messages of literary composition in opposite end sends location server (the remaining message of buffer memory on the IAD of opposite end) to, location server is sent to message the IAD of terminal after finding the positional information of terminal, this IAD forwards the packet then to terminal.Other processes with above-described embodiment and causes the July 1st, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment nine

Strategic server can close with the opposite end IAD and establish, and namely has local policy on the IAD of opposite end.Step 703, step 704 and step 705 are the inner realization of IAD at this moment, and other steps and embodiment seven or embodiment Aug. 1st cause, and can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment ten

Strategic server and opposite end IAD set up separately, when IAD powers on, strategic server with policy distribution to IAD, in this mode the opposite end to location server inquire about, the buffer memory of map information, other processing is consistent with above-described embodiment nine, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment 11

Fig. 8 is based on the scene of Fig. 4 system architecture, and the flow chart of query script is carried out in the opposite end to terminal positional information when sending data to terminal.Concrete steps are described below:

Step 800, terminal are registered on location server by IAD 1 and IAD 2.

Step 801, Correspondent Node sends data to terminal, and these data arrive the opposite end IAD.

Step 802, in the situation that buffer memory terminal iidentification position map information not, the opposite end IAD can carry out buffer memory to these data; This step is optional.

Step 803, opposite end IAD are to strategic server requesting query terminal positional information, and carried terminal identifies and/or policy information.

Step 804, strategic server obtains positional information (this positional information can be many records, be a plurality of positional informations or position section) according to step 803 carry information.

Step 805, strategic server be to location server requesting query terminal positional information, carried terminal sign, a plurality of positional information or position section.

Step 806, location server returns to response message to strategic server, carries positional information (this positional information can be one or more positional informations).

Step 807, strategic server returns to response message to the opposite end IAD, carries positional information (this positional information can be one or more positional informations).

Step 808, the opposite end IAD sends (as, terminal IAD 1) with data to certain positional information of obtaining or all positional informations, and terminal IAD 1 sends to terminal with these data.Simultaneously, the opposite end IAD can buffer memory opposite end sign, terminal iidentification, terminal positional information, conversation strategy information, in order to the opposite end is routed to the IAD of terminal to the subsequent packet that terminal sends, and need not to carry out the operation of inquiring about to location server alternatively.

Embodiment 12

In the present embodiment, in the step 803 of above-described embodiment 11, the IAD literary composition or comprise of reporting for the first time can be reported for the first time part message or all messages of literary composition in opposite end sends strategic server (the remaining message of buffer memory on the IAD of opposite end) to, perhaps strategic server continues message is sent to location server in step 805, strategic server is sent to message the IAD of terminal in step 806 or location server after the positional information of step 805 acquisition terminal, this IAD forwards the packet then to terminal.Other processes with above-described embodiment and causes May Day, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment 13

A kind of strategic server is provided in the present embodiment, and this policy service implement body comprises tactful maintenance module and query requests processing module, wherein:

Embodiment 14

The present embodiment provides a kind of location server, mainly comprises the map information maintenance unit, and positional information returns to the unit, wherein:

Embodiment 15

The present embodiment provides a kind of place information inquiry system, comprises IAD, strategic server, location server; Described IAD comprises place information inquiry module and data forwarding module, and described strategic server comprises the query requests processing module, and described location server comprises that positional information returns to the unit, wherein:

Embodiment 16

Strategic server in the above embodiment of the present invention can close with the opposite end IAD and establish, and namely has local policy on the IAD of opposite end.Step 803, step 804 and step 807 are the inner realization of IAD at this moment, and step 805 and step 806 are mutual for carrying out between opposite end IAD and location server.Other steps are consistent with embodiment 11 or embodiment 12, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Embodiment 17

Different from previous embodiment 16 is, in the present embodiment, strategic server and opposite end IAD set up separately, when IAD powers on, strategic server with policy distribution to IAD, in this mode the opposite end to location server inquire about, the buffer memory of map information, other processing is consistent with above-described embodiment 13, can not impact setting forth the present invention, therefore no longer be repeated in this description at this.

Further, in above all embodiment:

Policy information can be following one or more: access style, priority, network title, PLMNID, qos parameter, charge information, Correspondent Node information.The network title can be APN, domain name/sign, PDN name/sign.Qos parameter can be QCI.Charge information can be rate, rate grade.Correspondent Node information can be Correspondent Node sign, port, address.Policy information can refer to the information of terminal network or opposite end network, if there is corresponding relation in the information of terminal network with the opposite end network.Owing to being the policy information that the opposite end network provides, therefore the opposite end network provides the information of opposite end network, if but the opposite end network provides the information of terminal network, this information should be to have certain corresponding relation with the opposite end network so, such as the information of terminal network is that APN is ssss, ssss can be the opposite end network name so.

Location server can be MAPS, ILR, LMA, HA.

Positional information can be IP address or RID or station location marker or the CoA that access gateway address/sign or IAD distribute.

Terminal iidentification can be AID, IMSI, NAI, HNP, ID, IP address.

These are only preferred case study on implementation of the present invention; be not limited to the present invention; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.

Claims

1. a location information inquiry method, be applied to the identity locator separation network, it is characterized in that,

2. the method for claim 1, is characterized in that,

Described the first IAD is according to the terminal iidentification of described the second terminal, to described location server request position information;

3. the method for claim 1, is characterized in that,

Described the first IAD carries the terminal iidentification of policy information and/or described the second terminal during to described strategic server requesting terminal positional information;

4. method as claimed in claim 3, is characterized in that,

Described reference by location strategy comprises: to use or business or connect or policy information that the position is relevant and the corresponding relation of one or more positional informations; Perhaps, the corresponding relation of terminal iidentification and one or more positional informations.

5. method as claimed in claim 4, is characterized in that,

Described policy information comprises a kind of of following content or its combination in any:

6. method as described in claim 4 or 5, is characterized in that,

Described policy information is:

The information of Correspondent Node network;

7. method as claimed in claim 5, is characterized in that,

Described network title comprises: APN, domain name/sign, PDN name/sign;

Described qos parameter comprises: QCI;

Described charge information comprises: rate, rate grade;

8. the method for claim 1, is characterized in that,

Described the first IAD is during to described strategic server requesting terminal positional information, described strategic server is according to the reference by location strategy of preserving, return to positional information corresponding to described the first IAD, i.e. described second place information to described the first IAD;

9. method as claimed in claim 2, is characterized in that, described method also comprises:

10. method as claimed in claim 2 or claim 3, is characterized in that, described method also comprises:

11. method, is characterized in that as claimed in claim 2 or claim 3, described method also comprises:

12. a location information inquiry method is applied to the identity locator separation network, it is characterized in that,

13. method as claimed in claim 12 is characterized in that,

Described the first IAD according to the terminal iidentification of described the second terminal to described location server request position information; Positional information corresponding to terminal iidentification that described location server returns to described the second terminal to described the first IAD, i.e. described primary importance information, described primary importance information comprises one or more positional informations of described the second terminal;

14. method as claimed in claim 12 is characterized in that, described method also comprises:

15. a location information inquiry method is applied to the identity locator separation network, it is characterized in that,

16. method as claimed in claim 15 is characterized in that,

17. method as claimed in claim 15 is characterized in that, described method also comprises:

18. a location information inquiry method is applied to the identity locator separation network, it is characterized in that,

19. method as claimed in claim 18 is characterized in that,

Described reference by location strategy comprises: to use or business or connect or policy information that the position is relevant and the corresponding relation of one or more positional informations; Perhaps, the corresponding relation of terminal iidentification and one or more positional informations; Perhaps, the corresponding relation of Correspondent Node IAD and one or more positional informations.

20. a strategic server is characterized in that, comprises tactful maintenance module and query requests processing module, wherein:

21. strategic server as claimed in claim 20 is characterized in that,

Described query requests processing module is used for, when receiving the location information request of IAD initiation, information according to the IAD of described initiation request, perhaps according to the policy information that carries in described request and/or terminal iidentification, IAD to described initiation request returns to second place information, and described second place information is described IAD or described policy information and/or positional information corresponding to terminal iidentification.

22. strategic server as claimed in claim 20 is characterized in that,

Described query requests processing module is used for, receive that described IAD initiates carry the location information request of primary importance information the time,

23. strategic server as described in claim 20 or 21 is characterized in that,

Described tactful maintenance module also is used for, and the described reference by location strategy of safeguarding is sent to the IAD of appointment.

24. a location server is characterized in that, comprises the map information maintenance unit, and positional information returns to the unit, wherein:

25. location server as claimed in claim 24 is characterized in that,

Described positional information is returned to the unit and is used for, when receiving the location information request of IAD initiation, inquire about to described map information maintenance unit according to the terminal iidentification that carries in described location information request, obtain primary importance information, described primary importance information is one or more positional informations corresponding to described terminal iidentification; And return to described primary importance information to the IAD of described initiation request.

26. location server as claimed in claim 24 is characterized in that,

Described positional information is returned to the unit and is used for, when receiving the location information request of IAD initiation, according to the terminal iidentification that carries in described location information request and second place information, obtain primary importance information to described map information maintenance unit inquiry, described primary importance information is one or more positional informations corresponding to described terminal iidentification; And draw the common factor of described primary importance information and described second place information, and the positional information in described common factor is returned to the IAD of described initiation request.

27. a place information inquiry system is characterized in that, comprises IAD, strategic server, location server; Described IAD comprises place information inquiry module and data forwarding module, and described strategic server comprises the query requests processing module, and described location server comprises that positional information returns to the unit, wherein:

28. system as claimed in claim 27 is characterized in that, also comprises the map information maintenance unit in described location server,

29. system as claimed in claim 28 is characterized in that, described positional information is returned to the unit and is used for, after obtaining described primary importance information to described map information maintenance unit inquiry,

30. system as claimed in claim 27 is characterized in that, also comprises tactful maintenance module in described strategic server,

31. system as claimed in claim 30 is characterized in that, described query requests processing module is used for, after obtaining described second place information,