CN102036206A - Method and system for realizing location - Google Patents
Method and system for realizing location Download PDFInfo
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- CN102036206A CN102036206A CN2009101789432A CN200910178943A CN102036206A CN 102036206 A CN102036206 A CN 102036206A CN 2009101789432 A CN2009101789432 A CN 2009101789432A CN 200910178943 A CN200910178943 A CN 200910178943A CN 102036206 A CN102036206 A CN 102036206A
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Abstract
The invention provides a method and a system for realizing location. The method comprises the following steps that: user equipment (UE) requests security user plane location (SUPL) from an SUPL location platform (SLP); the SLP determines whether the UE has SUPL location capacity; and after determining that the UE has the SUPL location capacity, the SLP establishes SUPL connection with the UE and acquires positional information of the UE. By the method, when the UE initiates an SUPL location flow from a network side and the SLP determines to transmit an SUPL initialization message to the UE, the initiated location flow is ensured to aim at the UE with the SUPL location capacity because the SLP has determined that the UE has the SUPL location capacity, location response delay due to multiple failed attempts is avoided, and quick establishment of an SUPL location process is guaranteed. Particularly, the problem of establishment time delay of an emergency call is solved. The quick establishment of the emergency call is guaranteed.
Description
Technical field
The present invention relates to the urgent call technology, refer to a kind of method and system of locating especially based on the realization of user's face service technology.
Background technology
IP Multimedia System (IMS, IP Multimedia Core Network Subsystem) be the core of communication network of new generation, IMS adopts Session initiation Protocol (SIP, Session Initiation Protocol) system, SIP regulation communication and access are irrelevant, and possess multiple media business controlled function and bearing capacity separating power, calling and session separating power, application and service separating power, business and network detach ability and mobile network and internet integrated services ability etc.
Because IMS and the irrelevant characteristics of access, urgency traffic (EMC under the IMS, Emergency Call) can build at GPRS (GPRS, General Packet Radio Service) network, System Architecture Evolution (SAE, System Architecture Evolution) on the network, provides unified urgent call control.
In order to realize the urgency traffic under the IMS, positioning service is absolutely necessary, such as: need route emergency calls to suitable police station according to the position of UE, the UE current position information need be known for the purpose of safety, rescue by police station.
At present, location technology commonly used has two kinds: third generation partner program (3GPP, The 3rdGeneration Partnership Project) the chain of command positioning service (LCS of tissue definition, LocationService) technology, and user's face positioning service (SUPL, Security UserPlane Location) technology of OMA tissue definition.Wherein, the SUPL location technology has obtained using widely because its framework is realized simple and core net independence.
Fig. 1 is the network architecture schematic diagram of UE by the urgent call of SAE access IMS, and wherein, solid line is represented signaling, dotted line is represented user's IP tunnel, as shown in Figure 1, comprise the network element of part of network element, the position location services of SAE network portion, and the part of IMS urgency traffic.
Wherein, the network element of SAE network portion, be used to provide the bearer management and the mobile management of bottom, comprise that wireless base station (eNodeB), Mobility Management Entity (MME, Mobility ManagementEntity) and the user face data route of enhancing handled (SAE GW).ENodeB is the control appliance of the main interface-free resources of follow-on wireless access network, and higher up-downgoing speed can be provided, lower transmission delay and reliable more wireless transmission.MME is in charge of and stores subscriber equipment (UE, User Equipment) context is such as UE/ user ID, mobility management states, user security parameters etc., for the user distributes temporary mark, when UE quarters at this tracing area or this network, be responsible for this user is carried out authentication.SAE gateway (GW, Gate Way) can be divided into two kinds of gateway (S-GW, Serving GW) and packet data network gateways (PDN GW also can abbreviate P-GW as).S-GW is mobile anchor point between SAE system and traditional 3GPP system and the mobile anchor point between the E-UTRAN.P-GW is the borde gateway of SAE and packet data network (PDN, Packet Data Network), is responsible for the access of PDN, transmits function such as data between SAE and PDN.
Wherein, the core network element of user's face positioning service SUPL part is user's face locating platform (SLP, SUPL Location Platform).In addition, the user terminal with SUPL ability is referred to as SET (SUPLEnabled Terminal), in fact is exactly the UE of integrated locating module (as A-GPS).
Wherein, the part of IMS urgency traffic is in order to the session of control and processing urgent call.Wherein, the IMS urgent call partly comprises: home subscriber server (HSS, Home Subscriber Server), emergency call session controlled function (E-CSCF, Emergency Call Session Control Function), position requests function (LRF, Location Require Function), public safety joint point (PSAP, Public SafetyAccess Point).The subscription data of HSS leading subscriber is positioned at home network.The core network element of E-CSCF control emergent session process is positioned at the visit net.In fact PSAP is exactly police station.LRF is a logical functional entity, and for E-CSCF, PSAP etc. provides the positional information of UE, LRF can independently dispose, and also may be included in other location server, as be integrated among the SLP.
Generally, have the UE of SUPL ability, disposed the SLP of home network in terminal itself, i.e. H-SLP, when UE is in when non-roaming, can be by realizing the location alternately with H-SLP; After UE roamed into the visit net, UE need unite the SLP of H-SLP and visit net, and promptly V-SLP finishes the location together.Extraly, because the particularity of urgent call must be handled at the visit net, and may be different from general calling to the processing logic of urgent call, therefore there are the SLP that location-based service is provided at urgent call specially, i.e. urgent call SLP (E-SLP, Emergency SLP).Fig. 2 be have the SUPL ability UE under roaming scence, and mutual schematic diagram between locating platform.
At present, when the UE terminal with SUPL ability was SET initiation urgent call, the location for urgent call is used was started by network side usually, promptly adopts network side location (NI-LR, Network InitiatedLocation Request).
Fig. 3 is under LTE/EPS inserts, and adopts SUPL as the positioning service technology, and when UE initiated urgent call, network side was initiated the flow chart of location, as shown in Figure 3, may further comprise the steps:
Step 300:UE is attached to IP access network (IP CAN).IP CAN is meant the Access Layer that comprises eNodeB, MME.
In this step, be attached in the process of network at UE, UE is assigned with the IP address.And UE finds that by attaching process the inlet in IMS territory is the address of P-CSCF.
Step 301:UE initiates emergency call request, promptly initiates SIP INVITE to P-CSCF, wherein carries urgent sign (Emc).This call request is routed to E-CSCF.
After step 302:E-CSCF receives the emergency call request of UE, initiate the position enquiring request, require LRF that the positional information of UE is provided to LRF.
After step 303:LRF receives the position enquiring request of E-CSCF, initiate the position enquiring request to SLP, SLP sets up SUPL with UE and is connected, and obtains the positional information of UE (SET).
After step 304:LRF obtains the positional information of UE from SLP,, send the position enquiring response, return positional information and the PSAP information of UE to E-CSCF according to the suitable PSAP of the positional information decision-making of UE.
After step 305:E-CSCF obtained the positional information and PSAP information of UE, the emergency call request that UE is initiated was transferred to PSAP, promptly to PSAP switching SIP INVITE, wherein carried urgent sign (Emc).
Step 306: follow-up flow process is to set up the process of urgent call between PSAP and the UE.
In flow process shown in Figure 3, after network side (E-CSCF, LRF) received the emergency call request of UE, the location positioning procedure (NI-LR) by the network side initiation, i.e. step 302 and step 303 were initiated in decision.Wherein, step 303 is processes of a summary, sets up the SUPL positioning flow between concrete SLP and the UE, can adopt following Fig. 4 or method shown in Figure 5.
Fig. 4 is for after SLP receives the position enquiring request, sets up a kind of flow chart of SUPL position fixing process with UE, and as shown in Figure 4, SLP waits the positioning flow to UE notice initiation SUPL by Short Message Service Gateway (SMS GW), WAP gateway (WAP PPG).Specifically may further comprise the steps:
Step 400～step 401:SLP receives the position enquiring request that other network entity sends, and sends out SUPL initialization (SUPL INIT) message to sms center, WAP gateway etc.In this message, carry SUPL session id, the locate mode of SLP support, the operational mode of SLP.
Step 402～step 403: sms center (or WAP gateway) is packaged into short message (or WAP message) with SUPL INIT, and sends to UE.
After step 404:UE receives SUPL INIT message after the packing, initiatively initiate to be used for the process that the carrying of located subscriber face is set up to network.Alternatively, set up TLS secure link tunnel between UE and the SLP.
Step 405:UE sends SUPL location initialization (SUPL POS INIT) response to SLP.In this message, carry the SUPL ability of SUPL session id, UE etc.
Step 406: follow-up localization message is mutual.
Step 407: finish the location, and SLP sends SUPL to UE and finishes (SUPL END) message.
Perhaps, after SLP receives the position enquiring request, adopt flow process shown in Figure 5 to initiate position fixing process.Fig. 5 is for after SLP receives the position enquiring request, sets up the another kind of flow chart of SUPL position fixing process with UE, and as shown in Figure 5, SLP sends to UE by the IMS core network element with SUPL INIT message.Specifically comprise:
Step 500～step 501:SLP receives the position enquiring request that other network entity sends, and sends SUPL initialization (SUPL INIT) message to the IMS core network element.Normally, this message is protected in the SIP Message message.
Step 502:IMS core network element is transmitted to UE with SIP Message, wherein comprises SUPL INIT message.
After step 503:UE receives the SUPL INIT message that is included among the SIP Message, initiatively initiate to be used for the process that the carrying of located subscriber face is set up to network.And, set up TLS secure link tunnel between UE and the SLP.
Step 504:UE returns the 200OK response to the IMS core network element.
Step 505:UE sends SUPL location initialization (SUPL POS INIT) response to SLP.In this message, carry the SUPL ability of SUPL session id, UE etc.
Step 506: follow-up localization message is mutual.After finished the location, SLP sent SUPL to UE and finishes (SUPL END) message, to finish positioning flow.
At present, by above-mentioned Fig. 3, Fig. 4, flow process shown in Figure 5, when UE initiates the SUPL positioning flow by network side, determine when UE sends the SUPL initial message at SLP, because SLP does not know whether UE has the SUPL stationkeeping ability, thereby may initiate positioning flow to the UE of no SUPL stationkeeping ability, and can attempt postponing location response owing to repeatedly failing.
In particular, under urgent call, this defective has postponed the settling time of urgent call.And because the particularity of urgent call, calling need be set up in the fast as far as possible time, and therefore, the problem that the caused prolongation urgent call of existing realization emergency call location method is set up is unallowed.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of locating of realizing, can guarantee the quick foundation of SUPL position fixing process.
Another object of the present invention is to provide a kind of system of locating of realizing, can guarantee the quick foundation of SUPL position fixing process.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of locating of realizing comprises:
After user's face locating platform SLP received the position enquiring request, SLP determined whether UE has the SUPL stationkeeping ability;
After definite UE had the SUPL stationkeeping ability, SLP set up the positional information that SUPL is connected and obtains UE with UE.
Described SLP determines whether UE has the SUPL stationkeeping ability and be:
The SUPL service contracting data of the SUPL service contracting storage entity inquiry UE of described SLP in system;
There are SUPL service contracting data in SLP according to UE, judges UE and has the SUPL stationkeeping ability.
Described SUPL service contracting storage entity is home subscriber server HSS.
The SUPL service contracting data of described SUPL service contracting storage entity inquiry UE in system are:
Described SLP sends message to the SLP that serves common location, the SUPL service contracting data of inquiry UE.
Described SLP is the E-SLP that is used for urgent location; Described SLP determines whether UE has the SUPL stationkeeping ability and be:
When described UE initiates urgent call, self SUPL ability is carried in the message, until being delivered to E-SLP; If carry the SUPL ability of UE in the message, show that UE has the SUPL stationkeeping ability.
When described UE initiates urgent call, self SUPL ability is carried in the message, comprises until being delivered to E-SLP:
Described UE is attached to network, sends emergency call request to E-CSCF, carries the SUPL ability of UE in this emergency call request;
E-CSCF sends the position enquiring request to LRF; LRF is to the positional information of E-SLP inquiry UE; In whole process, the SUPL ability of UE is carried in the interactive messages, is delivered to E-SLP.
Described SLP is the SLP that is used for common location, or is used for the E-SLP of urgent location.
A kind of system of locating of realizing comprises UE and SLP at least, wherein,
SLP, be used to receive the position enquiring request after, determine whether UE has the SUPL stationkeeping ability, and after definite UE has the SUPL stationkeeping ability, set up the positional information that SUPL is connected and obtains UE with UE;
UE is used for setting up with SLP that SUPL is connected and self positional information is provided to SLP.
This system also comprises E-CSCF, after being used to receive call request, sends the position enquiring request by LRF to described SLP, the positional information of inquiry UE.
This system also comprises E-CSCF, after being used to receive the emergency call request of UE transmission, sends the position enquiring request to LRF, requires LRF to return the positional information of UE; LRF is to the positional information of E-SLP inquiry UE; In whole process, the SUPL ability of UE is carried in the interactive messages, is delivered to E-SLP.
The technical scheme that provides from the invention described above as can be seen, comprise that SLP receives the position enquiring request after, SLP determines whether UE has the SUPL stationkeeping ability, after definite UE had the SUPL stationkeeping ability, SLP set up the positional information that SUPL is connected and obtains UE with UE.Pass through the inventive method, when UE initiates the SUPL positioning flow by network side, determine when UE sends the SUPL initial message at SLP, because SLP has determined that UE has the SUPL stationkeeping ability, guaranteed that the positioning flow of initiating is at the UE's with SUPL stationkeeping ability, avoided attempting postponing location response, guaranteed the quick foundation of SUPL position fixing process owing to repeatedly failing.
In particular, under urgent call, the problem that the call set-up time of having avoided the delayed response owing to emergency call location to cause is extended has guaranteed the quick foundation of urgent call.
Description of drawings
Fig. 1 is UE inserts the urgent call of IMS by SAE a network architecture schematic diagram;
Fig. 2 be have the SUPL ability UE under roaming scence, and mutual schematic diagram between locating platform;
Fig. 3 is under LTE/EPS inserts, and adopts SUPL as the positioning service technology, and when UE initiated urgent call, network side was initiated the flow chart of location;
Fig. 4 is for after SLP receives the position enquiring request, sets up a kind of flow chart of SUPL position fixing process with UE;
Fig. 5 is for after SLP receives the position enquiring request, sets up the another kind of flow chart of SUPL position fixing process with UE;
Fig. 6 realizes the flow chart of the method for urgent location for the present invention;
Fig. 7 realizes the flow chart of first embodiment of urgent location for the present invention;
Fig. 8 realizes the flow chart of second embodiment of urgent location for the present invention.
Embodiment
Fig. 6 is the flow chart that the present invention realizes the method for urgent location, as shown in Figure 6, may further comprise the steps:
After step 600:SLP receives the position enquiring request, determine whether UE has the SUPL stationkeeping ability.
In this step, SLP determines whether UE has the SUPL stationkeeping ability and can adopt following method to realize:
First method, at first the SUPL service contracting data of the SUPL service contracting storage entity in system (may be HSS) inquiry UE.Whether SLP exists SUPL service contracting data according to UE after obtaining the SUPL service contracting data of UE, judges whether UE has the SUPL stationkeeping ability.If there are SUPL service contracting data in UE, think that then UE has the SUPL stationkeeping ability.
Second method when UE initiates urgent call, is carried at self SUPL ability in the message, until being delivered to E-SLP.If carry the SUPL ability of UE in the message, show that UE has the SUPL stationkeeping ability.
Step 601: after definite UE had the SUPL stationkeeping ability, SLP set up the positional information that SUPL is connected and obtains UE with UE.
Pass through the inventive method, when initiating the SUPL positioning flow by network side, determine when UE sends the SUPL initial message at SLP, because SLP has determined that UE has the SUPL stationkeeping ability, guaranteed that the positioning flow of initiating is at the UE's with SUPL stationkeeping ability, avoided attempting postponing location response, guaranteed the quick foundation of SUPL position fixing process owing to repeatedly failing.
In particular, under urgent call, avoided the problem that postpones the settling time of urgent call.Guaranteed the quick foundation of urgent call.
At the inventive method, a kind of system of locating of realizing also is provided, comprise UE and SLP at least, wherein,
SLP, be used to receive the position enquiring request after, determine whether UE has the SUPL stationkeeping ability, and after definite UE has the SUPL stationkeeping ability, set up the positional information that SUPL is connected and obtains UE with UE;
UE is used for setting up with SLP that SUPL is connected and self positional information is provided to SLP.
Below in conjunction with embodiment the inventive method is described in detail.
Fig. 7 realizes the flow chart of first embodiment of urgent location for the present invention, first embodiment adopts as SLP during to UE terminal initiation SUPL positioning flow, by whether the contracted method of SUPL business of the SUPL service contracting storage entity in system (may be HSS) inquiry UE, make SLP determine whether UE supports the SUPL stationkeeping ability, and initiating urgent call with UE among first embodiment is that example describes, as shown in Figure 7, comprising:
Step 700:UE initiates urgent call, and emergency call request is routed to E-CSCF.
After step 701:E-CSCF receives emergency call request, send the position enquiring request to E-SLP, the positional information of inquiry UE by LRF.
After step 702:E-SLP receives the position enquiring request, send message, the SUPL service contracting data of inquiry UE to the SLP that serves common location.
In this step, in order to initiate SUPL location positioning flow process to UE, at first, E-SLP need verify whether UE has the SUPL stationkeeping ability.If UE is current at the visit net, then E-SLP is from the SUPL subscription data of V-SLP inquiry UE.If UE is current in home network, then E-SLP is from the SUPL subscription data of H-SLP inquiry UE.
Step 703～step 704:SLP inquires about the SUPL service contracting data of UE and returns to E-SLP from HSS.
If E-SLP is the SUPL service contracting data to V-SLP inquiry UE, so, V-SLP needs to inquire about to H-SLP once more, and H-SLP transfers to inquire about to HSS.
Whether step 705:SLP exists SUPL service contracting data according to UE after obtaining the SUPL service contracting data of UE, determines whether UE supports the SUPL location: if there are SUPL service contracting data in UE, then determine UE and have the SUPL stationkeeping ability.Have the SUPL stationkeeping ability if SLP determines UE, then SLP sends SUPL initial message (SUPL INIT) to UE.
Step 706: after UE receives SUPL INIT message, return SUPL location initial message (SUPL POS INIT) to SLP.
Step 707: follow-up SUPL positioning flow, belong to existing procedure, repeat no more here.
After step 706 and step 707 were finished, E-SLP and UE had consulted the SUPL algorithm, have set up the SUPL connection, and SLP obtains positional information by follow-up flow process from UE thereafter.
After step 708:E-SLP obtains the positional information of UE, return SUPL to UE and finish (SUPL END) message, and return the position enquiring response of the positional information that carries UE to LRF.
After step 709:LRF obtained the positional information of UE, the suitable PSAP that makes a strategic decision sent the position enquiring response to E-CSCF, comprises position and the PSAP address of UE.Then, E-CSCF is routed to this PSAP with emergency call request, and PSAP and UE finish the foundation of urgent call.
In the embodiment shown in fig. 7, be example with urgent call trigger network side positioning flow, the situation of actual trigger network side positioning flow, and not only be confined to urgent call, and also there is other situation, implementation method is the same, those skilled in the art are easy to replace, and repeat no more here.And, the method for embodiment shown in Figure 6, that be not limited only to support to handle Location Request is E-SLP, if that handle Location Request is V-SLP or H-SLP, implementation method is consistent, those skilled in the art are easy to replace, and repeat no more here.
Fig. 8 realizes the flow chart of second embodiment of urgent location for the present invention, and second embodiment describes is UE when initiating urgent call, the SUPL ability information is carried to the IMS network, and further passes to the method for E-SLP.As shown in Figure 8, comprising:
Step 800:UE is attached to network, prepares placement of emergency calls, initiates urgent call to E-CSCF, promptly sends emergency call request SIP INVITE to E-CSCF.In this emergency call request, carry the SUPL ability of UE.
After step 801:E-CSCF receives the emergency call request of UE transmission, send the position enquiring request, require LRF to return the positional information of UE to LRF.LRF is to the positional information of E-SLP inquiry UE.In whole process, the SUPL ability of UE is carried in the interactive messages, is delivered to E-SLP.
Step 802～step 805 is a prior art, and E-SLP sets up SUPL with UE and is connected, and E-SLP is from UE inquiring position information.
Because in step 801, E-SLP has obtained the SUPL ability of UE, need not to re-use other modes in the present embodiment and verifies whether UE supports the SUPL stationkeeping ability.
After step 806:LRF has obtained the positional information of UE from E-SLP,,, carry positional information and the PSAP address of UE to E-CSCF home position inquiry response according to the suitable PSAP of positional information decision.
After step 807:E-CSCF had obtained PSAP, the emergency call request that UE is initiated was routed to this PSAP.
Step 808: in the subsequent process, finish the foundation of urgent call between PSAP and the UE.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method that realizes locating is characterized in that, comprising:
After user's face locating platform SLP received the position enquiring request, SLP determined whether UE has the SUPL stationkeeping ability;
After definite UE had the SUPL stationkeeping ability, SLP set up the positional information that SUPL is connected and obtains UE with UE.
2. method according to claim 1 is characterized in that, described SLP determines whether UE has the SUPL stationkeeping ability and be:
The SUPL service contracting data of the SUPL service contracting storage entity inquiry UE of described SLP in system;
There are SUPL service contracting data in SLP according to UE, judges UE and has the SUPL stationkeeping ability.
3. method according to claim 2 is characterized in that, described SUPL service contracting storage entity is home subscriber server HSS.
4. method according to claim 2 is characterized in that, the SUPL service contracting data of described SUPL service contracting storage entity inquiry UE in system are:
Described SLP sends message to the SLP that serves common location, the SUPL service contracting data of inquiry UE.
5. method according to claim 1 is characterized in that, described SLP is the E-SLP that is used for urgent location; Described SLP determines whether UE has the SUPL stationkeeping ability and be:
When described UE initiates urgent call, self SUPL ability is carried in the message, until being delivered to E-SLP; If carry the SUPL ability of UE in the message, show that UE has the SUPL stationkeeping ability.
6. method according to claim 5 is characterized in that, when described UE initiates urgent call, self SUPL ability is carried in the message, comprises until being delivered to E-SLP:
Described UE is attached to network, sends emergency call request to E-CSCF, carries the SUPL ability of UE in this emergency call request;
E-CSCF sends the position enquiring request to LRF; LRF is to the positional information of E-SLP inquiry UE; In whole process, the SUPL ability of UE is carried in the interactive messages, is delivered to E-SLP.
7. according to claim 1,2 or 4 described methods, it is characterized in that described SLP is the SLP that is used for common location, or be used for the E-SLP of urgent location.
8. a system that realizes locating is characterized in that, comprises UE and SLP at least, wherein,
SLP, be used to receive the position enquiring request after, determine whether UE has the SUPL stationkeeping ability, and after definite UE has the SUPL stationkeeping ability, set up the positional information that SUPL is connected and obtains UE with UE;
UE is used for setting up with SLP that SUPL is connected and self positional information is provided to SLP.
9. system according to claim 8 is characterized in that this system also comprises E-CSCF, after being used to receive call request, sends the position enquiring request by LRF to described SLP, the positional information of inquiry UE.
10. system according to claim 8 is characterized in that this system also comprises E-CSCF, after being used to receive the emergency call request of UE transmission, sends the position enquiring request to LRF, requires LRF to return the positional information of UE; LRF is to the positional information of E-SLP inquiry UE; In whole process, the SUPL ability of UE is carried in the interactive messages, is delivered to E-SLP.
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| CN111193999A (en) * | 2020-01-03 | 2020-05-22 | 展讯通信（上海）有限公司 | Information transmission method and device |
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| CN101305636A (en) * | 2005-09-15 | 2008-11-12 | 高通股份有限公司 | Emergency circuit-mode call support |
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| CN111193999A (en) * | 2020-01-03 | 2020-05-22 | 展讯通信（上海）有限公司 | Information transmission method and device |
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