CN101959123A - Bearer establishment method and system - Google Patents
Bearer establishment method and system Download PDFInfo
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- CN101959123A CN101959123A CN2009101613365A CN200910161336A CN101959123A CN 101959123 A CN101959123 A CN 101959123A CN 2009101613365 A CN2009101613365 A CN 2009101613365A CN 200910161336 A CN200910161336 A CN 200910161336A CN 101959123 A CN101959123 A CN 101959123A
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Abstract
The invention discloses a bearer establishment method, which comprises that: a security user plane location (SUPL) location platform (SLP) transmits a bearer establishment request to a system architecture evolution (SAE) gateway according to a received position query request; and the SAE gateway makes a request for establishing a bearer according to the bearer establishment request, and transmits a bearer establishment finishing message to user equipment (UE). The invention also provides a bearer establishment system. Through the method and the system, the UE can establish an emergency bearer for the location of the UE in an emergency call by adopting SUPL technology in a restricted mode, thereby ensuring the continuity of location services in the emergency call.
Description
Technical field
The present invention relates to system's Long Term Evolution (SAE, System Architecture Evolution) network technology territory, be meant a kind of method and system of setting up carrying especially.
Background technology
IP Multimedia System (IMS, IP Multimedia Core Network Subsystem) is the core of communication network of new generation, and it has adopted Session initiation Protocol (SIP, Session Initiation Protocol) system.The communication of Session Initiation Protocol regulation is irrelevant with access, therefore, emergence call service (EMC under the IMS system, Emergency Call) can build at GPRS (GPRS, General Packet Radio Service) net or SAE are online, and Session Initiation Protocol can provide unified urgent call control for the emergence call service in these two kinds of networks.
In the research of existing urgent call,, also should be able to initiate the session of urgent call even require UE under the confined situation of service, promptly under restricted pattern.In the prior art, the flow process that the UE under the restricted pattern initiates urgent call is as follows:
Step 1 is set up emergency bearing.UE initiates emergency attached request, is that UE carries urgent sign in common adhering to when asking of initiation, is urgent call with the current calling of the bearer network of informing emergence call service; After bearer network receives the emergency attached request of UE, set up a default bearer that is specifically designed to urgent call, this default bearer is exactly an emergency bearing.
Step 2 is set up urgent call.UE initiates emergency call request, promptly carries urgent sign in a normal call request, is emergency call request to show this call request; After bearer network receives emergency call request, by location-based service UE is positioned, and according to the position information confirming of UE address, thereby set up urgent call between UE and the PSAP for the public safety joint point (PSAP, Public Safety Access Point) of this UE service.
Current, the location technology of two main flows that location-based service provided is: the chain of command location technology, be chain of command positioning service (LCS, Location Service) location technology, locating information and positional information all are carried in the control channel; User's face location technology, be user's face positioning service (SUPL, Security User Plane Location) location technology, its basic point of departure is at UE and user's face locating platform (SLP, SUPL Location Platform) set up user's face tunnel between, locating information and positional information all are carried on this user's face tunnel.Because the SUPL location technology does not rely on concrete access and bearer network, be used for the location that UE just can be realized in located subscriber face tunnel and only need between SLP and UE, set up, therefore, SUPL can be deployed in the multiple network neatly and obtain and use widely.
But, when adopting existing SUPL location technology that UE is positioned, there is a bigger problem: in existing SUPL location technology, UE need create carrying, i.e. the location carrying that is used to locate according to note and WAP (wireless application protocol) (WAP, Wireless Application Protocol) message that SLP sends; But when UE was in restricted pattern, because the service of UE is limited, SLP can't send note and WAP message to UE, so UE just can not create this location emergency bearing, thereby also just can't realize in the urgent call location to UE.
In addition, when UE is in normal mode, adopt existing SUPL location technology that UE is positioned also and may go wrong: the location that UE creates under normal mode is not identified as urgent with carrying, be the non-emergent carrying in location, promptly UE does not create the location emergency bearing under normal mode; And when UE when non-confined area moves to confined area, all non-emergent carryings, comprise the location all will be released with non-emergent carrying, at this moment, UE is because service is limited to create the location emergency bearing, thereby cause the current location of urgent call of not serving with carrying, therefore, the continuity of the location-based service that SUPL provides during urgent call can not get guaranteeing.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system of setting up carrying, can effectively solve when adopting the SUPL location technology, UE can not create the location emergency bearing under restricted pattern, after perhaps UE switches to the restricted area, thus since its location of under normal mode, creating with carrying the continuity problem be forced to discharge location-based service can not guarantee urgent call the time.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of setting up carrying, this method comprises:
User's face locating platform SLP sends the load creating request according to the position enquiring request that receives to the Long Term Evolution SAE of system gateway;
Described SAE gateway is created described carrying according to described load creating request, and finishes message to user terminal UE transmission load creating.
Wherein, described SLP receives before the described position enquiring request, and this method also comprises:
Emergency call session controlled function E-CSCF entity sends the position enquiring request according to the emergency call request that UE sends to position requests function LRF entity;
Described LRF entity is transmitted to described SLP with described position enquiring request.
Described SLP sends the load creating request according to the position enquiring request that receives to the SAE gateway, is specially: described SLP judges when urgent call is served in the position enquiring request that receives, to the request of SAE gateway transmission load creating;
Urgent call is served in the position enquiring request that described SLP judgement receives, and is specially:
Described LRF entity is provided with a urgent sign in described position enquiring request, described urgent sign is used to indicate this position enquiring request to serve urgent call; Described SLP judges that according to described urgent sign described position enquiring request serves urgent call;
Perhaps, described SLP reads the address of the transmit leg entity of described position enquiring request, according to self the default emergency call entity and the corresponding relation of physical address, judge when described transmit leg entity is emergency call entity, judge that described position enquiring request serves urgent call.
Described SLP sends the load creating request to the SAE gateway: described SLP directly or by "Policy and Charging Rules Function PCRF entity sends the load creating request to described SAE gateway.
Described SLP sends the load creating request to the SAE gateway: described SLP sends the load creating request to packet data network gateway P-GW;
Accordingly, described SAE gateway is created and is carried as: described P-GW creates described carrying.
Described SAE gateway is finished message to described UE transmission load creating: described P-GW sends described load creating by gateway S-GW to described UE and finishes message.
Described load creating is finished message and is used to indicate the described location emergency bearing that is carried as;
Described load creating is finished the described location that is carried as of message indication and is specially with emergency bearing:
Finish that at described load creating protocol configuration option PCO element being set in the message, described PCO element carries one and is used to indicate the described sign that is carried as the location with emergency bearing;
Perhaps, finish at described load creating and a specific distribution is set in the message and keeps priority ARP element and service quality rating sign QCI element; The described emergency bearing that is carried as of described ARP element indication is set; The described location that is carried as of described QCI element indication is set with carrying.
This method also comprises:
Described SAE gateway directly or inform in the mode of message that the described location of SLP is created with emergency bearing by the PCRF entity and finish; Described SLP obtains the positional information of UE, the location of finishing UE described in the urgent call by described location with emergency bearing;
Described SAE gateway is described P-GW.
The present invention also provides a kind of system that sets up carrying, and this system comprises: SLP, SAE gateway and UE, wherein;
Described SLP is used for sending the load creating request according to the position enquiring request that receives to described SAE gateway;
Described SAE gateway is used for creating described carrying according to described load creating request, and finishes message to described UE transmission load creating;
Described UE is used to receive described load creating and finishes message.
This system also comprises E-CSCF entity and LRF entity;
Described E-CSCF entity, the emergency call request that is used for sending according to UE sends the position enquiring request to described LRF entity;
Described LRF entity is used for described position enquiring request is transmitted to described SLP.
Carrying establishing method of the present invention, SLP can determine current location-based service according to the position enquiring request and provide to urgent call, and therefore, SLP serves urgent call according to the load creating request that the position enquiring request generates; The carrying created of SAE gateway is the location of serving in the urgent call thus, and the SAE gateway is provided with load creating and finishes message and should be carried as the location emergency bearing to inform UE.Can make UE under restricted pattern, adopt the SUPL location technology also can create the location based on method of the present invention and use emergency bearing, for the use of the location in the UE urgent call, thus the continuity of location-based service also can guarantee urgent call the time.
Description of drawings
Fig. 1 is a wireless communication networks structural representation of the present invention;
Fig. 2 sets up the method flow schematic diagram of carrying for the present invention;
Fig. 3 sets up the method flow diagram of carrying embodiment one for the present invention;
Fig. 4 sets up the method flow diagram of carrying embodiment two for the present invention;
Fig. 5 sets up the system configuration schematic diagram of carrying for the present invention.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
The wireless communication networks structure that scheme was suitable for that the present invention sets up carrying as shown in Figure 1, comprise: UE, Mobility Management Entity (MME, Mobility Management Entity), SAE gateway, "Policy and Charging Rules Function (PCRF, Policy and Charging Rules Function) entity, SLP, position requests function (LRF, Location Require Function) entity, emergency call session controlled function (E-CSCF, Emergency Call Session Control Function) entity and PSAP.Wherein, the SAE gateway comprise gateway (S-GW, Serving GW) and SAE and Packet Data Network (PDN, Packet Data Network) borde gateway, be PDN Gateway (P-GW, PDN GW); SLP and P-GW can be by Lup interface or the Lup interface swap datas that strengthens; SLP and PCRF entity can pass through the Rx interface swap data.Wherein, Rx interface is used for the PCRF entity issues strategy from appointment to the policy execution entity (PCEF) of P-GW; The Lup interface of Lup interface or enhancing is used for SLP and user face data administrative unit, is the communication between the PDN GW, and by this user face data administrative unit, issues localization message and data to UE.
What the present invention was carried sets up flow process as shown in Figure 2, comprising:
Method of the present invention is applicable to that UE initiates urgent call under restricted pattern, and the situation that adopts the SUPL location technology that UE is positioned in urgent call.The carrying of adopting method of the present invention to create mainly is the location that is used for urgent call, therefore this carrying is called the location emergency bearing.
Below in conjunction with the wireless communication networks structure of Fig. 1, illustrate that the present invention sets up the flow process of bearing method.Figure 3 shows that the present invention sets up the schematic flow sheet of carrying embodiment one, this flow process is applicable to and is deployed with policy and charging control (PCC in urgent call, Policy Charging Control) Fu Wu scene, wherein, network element such as PCRF entity that the PCC service relates to.As shown in Figure 3, this flow process comprises:
Step 301, UE sends emergency call request to the E-CSCF entity.
Among this embodiment, UE is under the limited-service molding formula, when this moment, UE need set up urgent call, sends an emergency call request to the E-CSCF entity earlier.
Step 302, the E-CSCF entity sends the position enquiring request to the LRF entity.
The E-CSCF entity sends the position enquiring request, promptly asks UE is positioned to the LRF entity according to emergency call request; The E-CSCF entity requires the LRF entity PSAP corresponding with the positional information of this inquiry by this position enquiring request simultaneously.
Step 303, the LRF entity is transmitted to SLP with the position enquiring request.
Alternatively, LRF can add a urgent sign in the query requests of position, serve urgent call to inform this position enquiring request of SLP clearly in this step.
Step 304 is if not urgent sign judges that the position query requests is from emergency call entity.
SLP may receive the position enquiring request of the different purposes that a plurality of difference in functionality entities send at one time, as the position enquiring request of general service, the position enquiring request of urgent call etc., this moment, SLP need judge that whether the position enquiring request of its reception serves urgent call, specifically can adopt following mode: can judge by the urgent sign in the position enquiring request and serve urgent call; If not urgent sign in the position enquiring request, then SLP can judge whether the transmit leg entity of putting query requests is emergency call entity: the corresponding relation of default emergency call entity and physical address in SLP, when SLP reads the address of transmit leg entity of position enquiring request, whether the transmit leg entity that just can learn the position enquiring request according to this corresponding relation is emergency call entity, if be emergency call entity, then urgent call is served in this position enquiring request.
It is pointed out that the LRF entity only serves urgent call, is that the LRF entity is an emergency call entity.
Step 305, SLP sends the emergency bearing request to create to the PCRF entity.
When urgent call was served in the position enquiring request, SLP sent the load creating request to the PCRF entity, and the location in the urgent call is served in the carrying of this establishment among the present invention.Preferably, can identify by following mode this load creating request be emergency bearing request to create: SLP can in this load creating request, be provided with service quality rating for high or priority for high or specially for the service quality rating of urgent call distribution identify this carrying be serve urgent call, i.e. this load creating request is the emergency bearing request to create.The identification means that other also can be arranged certainly, as required.Wherein, SLP can send the emergency bearing request to create to the PCRF entity by Rx interface.
Step 306, the PCRF entity sends the emergency bearing request to create to the SAE gateway; The SAE gateway is created emergency bearing.
After the PCRF entity receives emergency bearing request to create from SLP, to this emergency bearing request to create of SAE gateway forwards.The SAE gateway is created this emergency bearing then.The SAE gateway is P-GW in this step.
Concrete, create this carrying by P-GW, the load creating mode is a prior art, repeats no more herein.
Step 307, the SAE gateway sends the location to UE and finishes message with the emergency bearing establishment.
Concrete, after P-GW creates emergency bearing, generate load creating and finish message, and send to UE by S-GW and MME.This load creating finish message in order to inform the current establishment of UE be carried as the location with emergency bearing, promptly this load creating to finish message be that message is finished with emergency bearing establishment in the location, be specially: P-GW is provided with protocol configuration option (PCO in this message, Protocol Configuration Options) element, comprise a sign in this PCO element, this sign is used to indicate this to be carried as the location emergency bearing; Perhaps, P-GW is provided with a specific distribution and keeps priority (ARP in this message, Allocation and Retention Priority) element and service quality rating sign (QCI, Qos Class Identifier) element, wherein, when the priority that the ARP element can be set as required is high, indicate this carrying to serve urgent call; The QCI element promptly indicates this carrying to serve the location.
Step 308, the SAE gateway is informed by the PCRF entity that SLP location is created with emergency bearing and is finished.
The location with emergency bearing create finish after, SAE gateway, this moment send message by the PCRF entity to SLP for P-GW, finish to inform that SLP should locate to have created with emergency bearing.Wherein, the PCRF entity sends to SLP by Rx interface with this message.
Step 309, SLP sends user's face location initial message SUPL INIT to UE.
Step 310, UE replys user's face location initialization response message SUP POS INIT to SLP.
Step 311, follow-up localization message.
Wherein, SLP and UE consult the session identification (ID) of SUPI and the information such as SUPL ability of UE by SUPL INIT message and SUP POS INIT message, and the positioning flow of UE is carried out initialization; Send follow-up localization message by the location with emergency bearing then, make SLP obtain the positional information of UE, finish in the urgent call location UE.
Step 312, SLP sends position enquiring request response to the LRF entity.
After SLP has obtained the positional information of UE, send the positional information of position enquiring request response and UE to the LRF entity.The LRF entity is that UE distributes corresponding PSAP according to the positional information of UE; And the address of this PSAP sent to the E-CSCF entity, thereby finish the foundation of this urgent call.
Step 313, follow-up urgent call flow process.
After the foundation of urgent call is finished, carry out follow-up urgent call flow process, be prior art herein, repeats no more.
Figure 4 shows that the present invention sets up the schematic flow sheet of carrying embodiment two, this flow process also can be used in the scene of no PCC service in the urgent call both applicable to the scene that is deployed with the PCC service in the urgent call.As shown in Figure 4, this flow process comprises:
Step 401, UE sends emergency call request to the E-CSCF entity.
Step 402, the E-CSCF entity sends the position enquiring request to the LRF entity.
Step 403, the LRF entity is transmitted to SLP with the position enquiring request.
Step 404 is if not urgent sign judges that the position query requests is from emergency call entity.
Step 401 is identical to the processing of step 304 with step 301 to the processing of step 404, repeats no more herein.
Step 405, SLP directly sends the emergency bearing request to create to the SAE gateway; The SAE gateway is created emergency bearing.
In this step, when urgent call was served in the position enquiring request, SLP can directly send the emergency bearing request to create to the SAE gateway, and wherein, SLP can directly send the load creating request to the SAE gateway by the LUP interface of Lup interface or enhancing.The SAE gateway is P-GW in this step.
Concrete, create this carrying by P-GW, the load creating mode is a prior art, repeats no more herein.
Step 406, the SAE gateway sends the location to UE and finishes message with the emergency bearing establishment.
This step is identical with the processing of step 305, repeats no more herein.
Step 407, SAE gateway are informed directly that SLP location is created with emergency bearing and are finished.
In this step, the location with emergency bearing create finish after, SAE gateway, this moment be P-GW directly to SLP transmission message, finish to inform that SLP should locate to have created with emergency bearing.Wherein, the PCRF entity sends to SLP by the Lup interface of Lup interface or enhancing with this message.
Step 408, SLP sends user's face location initial message SUPL INIT to UE.
Step 409, UE replys user's face location initialization response message SUP POS INIT to SLP.
Step 410, follow-up localization message.
Step 411, SLP sends position enquiring request response to the LRF entity.
Step 412, follow-up urgent call flow process.
Wherein, step step 408 is identical to the processing of step 313 with step 309 to the processing of step 412, repeats no more herein.
In order to realize above-mentioned carrying establishing method, the invention provides a kind of system that sets up carrying, as shown in Figure 5, this system comprises: SLP 10, SAE gateway 20 and UE 30, wherein;
SLP 10, are used for sending the load creating request according to the position enquiring request that receives to SAE gateway 20;
SAE gateway 20 is used for creating carrying according to the load creating request, and finishes message to UE 30 transmission load creatings;
UE 30, are used to receive load creating and finish message.
This system can also comprise E-CSCF entity 40 and LRF entity 50;
E-CSCF entity 40, the emergency call request that is used for sending according to UE 30 sends the position enquiring request to LRF entity 50;
LRF entity 50 is used for the position enquiring request is transmitted to SLP 10.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. a method of setting up carrying is characterized in that, this method comprises:
User's face locating platform SLP sends the load creating request according to the position enquiring request that receives to the Long Term Evolution SAE of system gateway;
Described SAE gateway is created described carrying according to described load creating request, and finishes message to user terminal UE transmission load creating.
2. according to the method for the described foundation carrying of claim 1, it is characterized in that described SLP receives before the described position enquiring request, this method also comprises:
Emergency call session controlled function E-CSCF entity sends the position enquiring request according to the emergency call request that UE sends to position requests function LRF entity;
Described LRF entity is transmitted to described SLP with described position enquiring request.
3. according to the method for the described foundation of claim 2 carrying, it is characterized in that, described SLP sends the load creating request according to the position enquiring request that receives to the SAE gateway, be specially: described SLP judges when urgent call is served in the position enquiring request that receives, to the request of SAE gateway transmission load creating;
Urgent call is served in the position enquiring request that described SLP judgement receives, and is specially:
Described LRF entity is provided with a urgent sign in described position enquiring request, described urgent sign is used to indicate this position enquiring request to serve urgent call; Described SLP judges that according to described urgent sign described position enquiring request serves urgent call;
Perhaps, described SLP reads the address of the transmit leg entity of described position enquiring request, according to self the default emergency call entity and the corresponding relation of physical address, judge when described transmit leg entity is emergency call entity, judge that described position enquiring request serves urgent call.
4. according to the method for the described foundation carrying of claim 1, it is characterized in that described SLP sends the load creating request to the SAE gateway and is: described SLP directly or by "Policy and Charging Rules Function PCRF entity sends the load creating request to described SAE gateway.
5. according to the method for the described foundation carrying of claim 1, it is characterized in that described SLP sends the load creating request to the SAE gateway and is: described SLP sends the load creating request to packet data network gateway P-GW;
Accordingly, described SAE gateway is created and is carried as: described P-GW creates described carrying.
6. according to the method for the described foundation carrying of claim 5, it is characterized in that described SAE gateway is finished message to described UE transmission load creating and is: described P-GW sends described load creating by gateway S-GW to described UE and finishes message.
7. according to the method for the described foundation carrying of claim 1, it is characterized in that described load creating is finished message and is used to indicate the described location emergency bearing that is carried as;
Described load creating is finished the described location that is carried as of message indication and is specially with emergency bearing:
Finish that at described load creating protocol configuration option PCO element being set in the message, described PCO element carries one and is used to indicate the described sign that is carried as the location with emergency bearing;
Perhaps, finish at described load creating and a specific distribution is set in the message and keeps priority ARP element and service quality rating sign QCI element; The described emergency bearing that is carried as of described ARP element indication is set; The described location that is carried as of described QCI element indication is set with carrying.
8. according to the method for the arbitrary described foundation carrying of claim 1 to 7, it is characterized in that this method also comprises:
Described SAE gateway directly or inform in the mode of message that the described location of SLP is created with emergency bearing by the PCRF entity and finish; Described SLP obtains the positional information of UE, the location of finishing UE described in the urgent call by described location with emergency bearing;
Described SAE gateway is described P-GW.
9. a system that sets up carrying is characterized in that, this system comprises: SLP, SAE gateway and UE, wherein;
Described SLP is used for sending the load creating request according to the position enquiring request that receives to described SAE gateway;
Described SAE gateway is used for creating described carrying according to described load creating request, and finishes message to described UE transmission load creating;
Described UE is used to receive described load creating and finishes message.
10. according to the system of the described foundation carrying of claim 9, it is characterized in that this system also comprises E-CSCF entity and LRF entity;
Described E-CSCF entity, the emergency call request that is used for sending according to UE sends the position enquiring request to described LRF entity;
Described LRF entity is used for described position enquiring request is transmitted to described SLP.
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| CN2009101613365A CN101959123A (en) | 2009-07-20 | 2009-07-20 | Bearer establishment method and system |
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| CN2009101613365A CN101959123A (en) | 2009-07-20 | 2009-07-20 | Bearer establishment method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102857892A (en) * | 2011-07-01 | 2013-01-02 | 中兴通讯股份有限公司 | Emergency call access method and system |
| CN111264071A (en) * | 2017-10-10 | 2020-06-09 | 株式会社Ntt都科摩 | Security establishing method, terminal device and network device |
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| CN1889765A (en) * | 2005-06-29 | 2007-01-03 | 华为技术有限公司 | Method for locating other terminals |
| CN1922910A (en) * | 2004-01-13 | 2007-02-28 | 诺基亚公司 | Providing location information |
| CN101466083A (en) * | 2007-12-18 | 2009-06-24 | 华为技术有限公司 | Emergency call method and apparatus |
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| CN1922910A (en) * | 2004-01-13 | 2007-02-28 | 诺基亚公司 | Providing location information |
| CN1889765A (en) * | 2005-06-29 | 2007-01-03 | 华为技术有限公司 | Method for locating other terminals |
| CN101466083A (en) * | 2007-12-18 | 2009-06-24 | 华为技术有限公司 | Emergency call method and apparatus |
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| CN102857892A (en) * | 2011-07-01 | 2013-01-02 | 中兴通讯股份有限公司 | Emergency call access method and system |
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| CN111264071A (en) * | 2017-10-10 | 2020-06-09 | 株式会社Ntt都科摩 | Security establishing method, terminal device and network device |
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Application publication date: 20110126 |