CN102984150B

CN102984150B - VOIP emergency call processes

Info

Publication number: CN102984150B
Application number: CN201210488801.8A
Authority: CN
Inventors: 约翰·纳谢尔斯基; 斯蒂芬·埃奇; 柯克·伯勒斯
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2005-08-02
Filing date: 2006-08-02
Publication date: 2016-09-07
Anticipated expiration: 2026-08-02
Also published as: JP5529219B2; CN101273615A; JP2012070392A; HUE038471T2; CN102970655A; JP2014131313A; HUE046984T2; ES2765676T3; CN102970655B; CN101273615B; ES2681679T3; HK1122444A1; CN102984150A; JP2013031170A

Abstract

The present invention relates to VOIP emergency call process.The present invention describes and is used for supporting the technology that urgent internet voice protocol (VoIP) calls.Described technology can be used for various 3GPP and 3GPP2 network, various positions framework and various types of subscriber equipment (UE).UE and the network service accessed are to send the request setting up emergency VoIP call.Described UE estimates with the primary importance of the described UE of acquisition alternately with by the location server of the network instruction of described access.Described UE performs call setting to set up described emergency VoIP call with PSAP via the network of described access, wherein can estimate select described PSAP based on described primary importance.Described UE (such as) can perform location to obtain the updated location estimation of described UE when described PSAP asks with described location server subsequently.

Description

VOIP emergency call processes

The application be international filing date be on August 2nd, 2006, international application no is PCT/US2006/030349, invention The PCT application of entitled " VOIP emergency call process " enters National Phase in China Application No. 200680035724.3 The divisional application of patent application.

Subject application advocates entitled " VOICE-OVER INTERNET PROTOCOL filed in 2 days Augusts in 2005 EMERGENCY CALL SUPPORT " No. 60/704,977 non-provisional United States application case, on August 30th, 2005 Application entitled " VOIP EMERGENCY CALL SUPPORT " No. 60/713,199 non-provisional United States application case, Filed in 13 days October in 2005 the entitled " VOIP EMERGENCY CALL SUPPORT " the 60/726,694th Filed in number non-provisional United States application case, 31 days October in 2005 entitled " VOIP EMERGENCY CALL SUPPORT " The 60/732nd, No. 226 non-provisional United States application case, and entitled " SUPPORT FOR filed in December in 2005 9 days EMERGENCY VoIP CALLS USING SUPL " the priority of the 60/748th, No. 821 non-provisional United States application case, Described all application cases all transfer this assignee and are incorporated herein by reference.

Technical field

The present invention relates generally to radio communication, and more particularly, it relates to for the technology supporting urgent call.

Background technology

Widespread deployment cordless communication network provides such as voice, video, grouped data, information receiving and transmitting, broadcast etc. various Communication service.These wireless networks can be can to support the communication of multiple user by sharing available Internet resources Multiple access network.The example of this type of multiple access network comprises CDMA (CDMA) network, time division multiple acess (TDMA) Network, frequency division multiple access (FDMA) network and orthogonal FDMA (OFDMA) network.

Wireless network generally supports to make the communication of the wireless user of service subscription to these networks.Service subscription can be used for The information of safety, route, service quality (QoS), record keeping etc. is associated.Subscription-related information can be used for and wireless network Set up calling.

One of most of basic services that wireless network provides for its user are the abilities sending and receiving audio call.These clothes One nearest enhancing aspect of business is to send and receive the ability that internet voice protocol (VoIP) calls.Voip call It is wherein with the form of bag being route as other grouped data rather than send voice in special Traffic Channel The audio call of data.

Wireless user can set up emergency speech or other media call with wireless network, and described wireless network can be or permissible It it not user's home network of making that service subscription is targeted.This calling can use VoIP.Significant challenge is by urgent call It is routed to serve the suitable public safety answering point (PSAP) of calling.This may must obtain the interposition of user Put estimation and estimate to determine suitable PSAP based on described centre position.If user is roaming and/or not to any Network makes service subscription, then problem is more complicated.

Therefore, technique needs the technology for supporting urgent call and emergency VoIP call.

Summary of the invention

Described herein for the technology supporting that urgent internet voice protocol (VoIP) calls.Described technology can be used for various 3GPP and 3GPP2 network, various positions framework, and make and do not make the subscriber equipment (UE) of service subscription.

In one embodiment, UE and the network service accessed are to send the request setting up emergency VoIP call.Described UE With the location server indicated by the network of described access alternately to obtain the primary importance estimation of described UE.Described UE warp By the network execution call setting of described access to set up emergency VoIP call with PSAP, can come based on initial position estimation Select described PSAP.Described UE can (such as) perform to determine with described location server when described PSAP asks subsequently Position is estimated with the updated location obtaining described UE.The various details of emergency VoIP call are described below.

It is more fully described various aspects of the invention and embodiment further below.

Accompanying drawing explanation

It is considered in conjunction with the accompanying, from the detailed description of the invention being set forth below, will become more apparent each aspect of the present invention and embodiment, In accompanying drawing, same reference numerals is the most correspondingly identified.

Fig. 1 shows the deployment supporting emergency VoIP call.

Fig. 2 shows the 3GPP network architecture.

Fig. 3 shows the 3GPP2 network architecture.

Figure 4 and 5 show the network architecture and the message stream of the emergency VoIP call with SUPL position respectively.

Fig. 6 and 7 shows the network architecture and the message stream of the emergency VoIP call with 3GPP control plan-position respectively.

Fig. 8 and 9 shows the network architecture and the message stream of the emergency VoIP call with X.S0024 position respectively.

Figure 10 and 11 shows the network architecture and the message stream of the emergency VoIP call of the UE not making service subscription respectively.

Figure 12 shows the block diagram of the some entities in Fig. 1 to 3.

Detailed description of the invention

Vocabulary " exemplary " is used to represent " serving as example, example or explanation " herein.Here depicted as " exemplary " Any embodiment or design be not necessarily to be construed as being preferable over or beneficially other embodiments or design.

Described herein for the technology supporting emergency VoIP call.Emergency VoIP call is the voip call to emergency services Or packet switched call.Emergency VoIP call can so identify and can distinguish with normal voip call in a number of ways, as Described below.Emergency VoIP call can be associated with the various characteristics being different from common voip call, described characteristic example As for obtaining the correct position of user and estimating, by emergency VoIP call by suitable PSAP etc..Location estimation (position Estimate) it is also referred to as location estimation (location estimate), location etc..

Fig. 1 shows the deployment 100 supporting emergency VoIP call.Subscriber equipment (UE) 110 communicates with access network 120 To obtain basic IP communication service.UE 110 can be fixing or movement, and alternatively referred to as mobile station (MS), Terminal, subscri er unit, stand or other term a certain.UE 110 can be cellular phone, personal digital assistant (PDA), Wireless device, laptop computer, telemetering equipment, tracking device etc..UE 110 can be with in access network 120 Or more than one base station and/or one or more access points communicate.UE 110 also can be from one or more satellites 190 receive signal, and described satellite 190 can be global positioning system (GPS), European Galileo System, Russia GLONASS system or a part for any GLONASS (GNSS).UE 110 can measure from access network The signal of the base station in network 120 and/or the signal from satellite 190, and the pseudorange (pseudo-range) of satellite can be obtained Measured value and/or the timing measured value of base station.Pseudo-range measurements and/or timing measured value may be used in many institutes in technique The location estimation of UE 110, described localization method for example, auxiliary type are derived in the known one in localization method or combination GPS (A-GPS), independent GPS, advanced forward link triangle polyester fibre (A-FLT), enhancement mode observed time difference (E-OTD), Observation arrives time difference (OTDOA), enhancement type district ID etc..

Access network 120 provides the radio communication of the UE of the coverage being positioned at access network.Access network 120 Base station, network controller and/or other entity can be comprised, as described below.(it is also referred to as the network 130 accessed The public land mobile network (V-PLMN) accessed) it is the network being currently serviced in UE 110.Home network 160 (it is also referred to as Home PLMN (H-PLMN)) is the network that UE 110 makes that reservation is targeted.Access network 120 with The network 130 accessed is associated.The network 130 accessed and home network 160 can also be identical or different nets Network.The network 130 and the home network 160 that are accessed may or may not have roaming agreement.Network 130 and 160 is every One can include providing Data Connectivity, location-based service and/or other functional and entity of service.

Network 170 can comprise PSTN (PSTN), the Internet and/or other voice and data network.PSTN Support the communication for conventional plain old telephone service (POTS).PSAP 180 is responsible for response urgent call (example As, for reporting to the police, fire and medical services) entity, and alternatively referred to as emergency centers (EC).This type of calling can be Initial when user dials a certain fixing well-known number (such as, the 112 of 911 or the Europe in North America).PSAP 180 are generally runed by government organs (such as, country or city) or are had.PSAP 180 can support for voip call IP connectivity and therefore support session initiation protocol (SIP), described SIP is for opening based on IP (such as VoIP) Begin, revise and terminate the signaling protocol of oolhiu interactive user session.Or or it addition, PSAP 180 can support and PSTN 170 Communication.

Technique described herein can be used for being derived from the emergency VoIP call of the such as wired networks such as DSL and cable, and For be derived from wireless wide area network (WWAN), WLAN (WLAN), wireless metropolitan network (WMAN) with And there is the emergency VoIP call of the wireless network that WWAN and WLAN covers.WWAN can be CDMA, TDMA, FDMA, OFDMA and/or other network.Cdma network embodiment such as wideband CDMA (W-CDMA), One or more radiotechnics such as cdma2000.Cdma2000 contains IS-2000, IS-856 and IS-95 standard And comprise Ev-DO revised edition to optimize IP support.TDMA network embodiment such as global system for mobile communications (GSM), One or more radiotechnics such as digital advanced mobile phone system (D-AMPS).D-AMPS contains IS-248 And IS-54.W-CDMA is described in the document of the tissue of named " the 3rd generation partner program " (3GPP) And GSM.Cdma2000 is described in the document of the tissue of named " the 3rd generation partner program 2 " (3GPP2). 3GPP and 3GPP2 document is publicly available.The radiotechnics such as WLAN embodiment such as IEEE 802.11.WMAN The radiotechnics such as embodiment such as IEEE 802.16.These various radiotechnics and standard are known in the art 's.

Fig. 2 shows the 3GPP network architecture.UE 110 can be via 3GPP access network 120a or WLAN access network 120b obtains radio and accesses.3GPP access network 120a can be GSM EDGE radio access network (GERAN), universal terrestrial radio access network (UTRAN), evolution UTRAN (E-UTRAN) or a certain its Its access network.3GPP access network 120a comprises base station 210, base station sub-system (BSS)/radio net controls Other entity do not shown in device (RNC) 212, and Fig. 2.Base station is also referred to as node B, enhancement mode node B (e- Node B), base station transceiver (BTS), access point (AP) or other term a certain.WLAN 120b comprises access point 214 and can be any WLAN.

V-PLMN 130a is an embodiment of the accessed network 130 in Fig. 1, and comprises V-PLMN core network 230a and V-PLMN position entities 270a.V-PLMN core network 230a comprises Serving GPRS Support Node (SGSN) 232a, Gateway GPRS Support Node (GGSN) 232b, WLAN access gateway (WAG) 234 and grouped data Gateway (PDG) 236.SGSN 232a and GGSN 232b is GPRS (general packet radio service) (GPRS) core network A part, and provide packet-switched services to communicate for UE with 3GPP access network 120a.WAG 234 and PDG 236 is a part for 3GPP interworking WLAN (I-WLAN) core network, and provide packet-switched services with Communicate in UE with WLAN 120b.

V-PLMN core network 230a also comprises local subscriber server (HSS) 250 and various IP Multimedia System (IMS) entity, comprises proxy-call conversation control function (P-CSCF) 252, urgent CSCF (E-CSCF) 254, inquiry CSCF (I-CSCF) 256 and MGCF (MGCF) 258.P-CSCF 252、E-CSCF 254, I-CSCF 256 and MGCF 258 supports IMS service, such as voip call, and is V-PLMN IMS network A part.P-CSCF 252 accepts the request from UE, and these are asked or may be after translation in inter-process Forward the request to other entity.E-CSCF 254 performs session control service for UE and maintenance is used for supporting IMS The session status of emergency services.E-CSCF 254 supports emergency VoIP call further.MGCF 258 guides SIP/IP With the Signalling conversion between PSTN (such as, SS7ISUP), and whenever from a user voip call arrive PSTN Described MGCF 258 is used during user.HSS 250 stores V-PLMN 130a as the reservation of the UE of home network Relevant information.

V-PLMN position entities 270a can comprise emergency services SUPL location platform (E-SLP) 272 and access SLP (V-SLP) 274, it supports OMA secure user plane location (SUPL).V-SLP 274 can with V-PLMN 130a In different networks or it is associated from described different network, and/or can geographically be closer to UE 110.Or or it addition, V-PLMN position entities 270a can comprise GMLC (GMLC) 276, and it is that 3GPP controls plane position The part put.E-SLP 272, V-SLP 274 and GMLC 276 communicate for UE with V-PLMN 130a and provide position Service.

H-PLMN 160a is an embodiment of the home network 160 in Fig. 1, and comprises H-PLMN core network 260.H-PLMN core network 260 comprises HSS 266 and comprises the support IMS for home network 160 further IMS entity, such as I-CSCF 262 and serving CSCF (S-CSCF) 264.I-CSCF 262 and S-CSCF 264 It it is a part for H-PLMN IMS network.

Fig. 3 shows the 3GPP2 network architecture.UE 110 can be via 3GPP2 access network 120c or WLAN access network Network 120d obtains radio and accesses.3GPP2 access network 120c can be CDMA20001X network, CDMA2000 1xEV-DO network or other access network a certain.3GPP2 access network 120c comprises base station 220, radio resource control Other entity do not shown in system/Packet Control Function (RRC/PCF) 222, and Fig. 3.RRC is alternatively referred to as radio Network controller (RNC) or base station.3GPP2 access network 120c is alternatively referred to as radio access network (RAN). WLAN 120d comprises access point 224 and can be any WLAN being associated with 3GPP2 network.

V-PLMN 130b is another embodiment of the accessed network 130 in Fig. 1, and comprises V-PLMN core network 230b and 3GPP2 position entities 270b.V-PLMN core network 230b comprises packet data serving node (PDSN) 242, grouped data interworking function (PDIF) 244 and checking, charging (AAA) server 246 is authorized.PDSN 242 are respectively UE with 3GPP2 access network 120c with PDIF 244 and WLAN 120d communicate and provides packet switch to take Business.V-PLMN core network 230a also comprises such as P-CSCF 252, E-CSCF 254, I-CSCF 256 and MGCF 258 IMS such as grade or multimedia domain, MMD (MMD) entity.E-CSCF 258 also can have such as ES-AM, and (emergency services should With manager) etc. other title.

3GPP2 position entities 270b can comprise the E-SLP 272 and V-SLP 274 for SUPL.Or or it addition, 3GPP2 position entities 270b can comprise emergency service locations server (E-PS) 282 and the location-server accessed (V-PS)/location entity (PDE) 284, it is a part for the X.S0024 position for cdma2000 network.E-PS 282 alternatively referred to as act on behalf of location-server (S-PS).E-SLP 272, V-SLP 274, E-PS 282 and V-PS/PDE 284 Communicate for UE with V-PLMN 130b and location-based service is provided.

For simplicity, Fig. 2 and 3 only shows some entities of the reference in the following description in 3GPP and 3GPP2. 3GPP and 3GPP2 network can comprise other entity defined respectively by 3GPP and 3GPP2.

In the following description, 3GPP network refers to network and network subsystem (such as, the access network defined by 3GPP Subsystem), and combine other network and the network subsystem (such as, WLAN) of 3GPP network operation.3GPP net Network and network subsystem can comprise GERAN, UTRAN, E-UTRAN, GPRS core network, IMS network, 3GPP I-WLAN etc..3GPP2 network refers to network and the network subsystem defined by 3GPP2, and combines 3GPP2 network Other network of operation and network subsystem.3GPP2 network can comprise CDMA20001X, CDMA2000 1xEV-DO, The WLAN etc. that cdma2000 core network, 3GPP2 IMS or MMD network subsystem, 3GPP2 are associated.For For the sake of simple, " 3GPP WLAN " refer to the WLAN being associated with 3GPP network, and " 3GPP2 WLAN " Refer to the WLAN being associated with 3GPP2 network.

In the following description, GPRS accesses and refers to via other 3GPP access network of GERAN, UTRAN or a certain Access GPRS.3GPP WLAN accesses and refers to via WLAN to access 3GPP core network.Cdma2000 connects Enter to refer to access via other 3GPP2 access network of CDMA2000 1X, CDMA2000 1xEV-DO or a certain Cdma2000 core network.3GPP2 WLAN accesses and refers to via WLAN to access 3GPP2 WLAN core network.

Universal Integrated Circuit Card (UICC) may or may not be equipped with for 3GPP, UE 110.For 3GPP2, UE 110 Subscriber Identity Module (UIM) may or may not be equipped with.UICC or UIM is generally specific to a subscriber and can store individual People's information, subscription information and/or out of Memory.UE (UICC-less UE) without UICC is not have UICC UE, and be the UE (UIM-less UE) without UIM be the UE without UIM.UE without UICC/UIM does not has There is reservation, not there is home network, and not there is checking certificate (such as, not having key) examine any claiming Identification information, this makes location-based service relatively subject to risk.

Technique described herein can be used for such as controlling the various positions framework such as plane and user plane framework.Control plane (its Also referred to as signaling plane) be a kind of for carrier signaling for the mechanism of higher layer applications, and generally with the specific association of network View, interface and signaling message are implemented.User plane is that one for higher layer applications but uses user for carrier signaling The mechanism of flat carrier, described user plane bearer is generally with such as UDP (UDP), transmission control protocol (TCP) implement with (the being all known in the art) agreement such as Internet Protocol (IP).Support location-based service and The message carried of location is as a part for the signaling controlled in Flat Architecture, and as the data in user plane framework The part of (from the viewpoint of network).But, the content of described message can be same or like in two kinds of frameworks.

Described technology can be used for the various positions framework/solution enumerated in such as table 1.From Open Mobile Alliance (OMA) document describes SUPL and initial stage SUPL.3GPP TS 23.271, TS 43.059 and TS 25.305 In describe 3GPP control plane.IS-881 and 3GPP2 X.S0002 describes 3GPP2 and controls plane.3GPP2 X.S0024 describes 3GPP2 user plane.

Table 1

Position framework	Type of architecture	Can be applicable to ...
			Initial stage SUPL	User plane	3GPP network
SUPL	User plane	3GPP and 3GPP2 network
			3GPP controls plane	Control plane	3GPP network
3GPP2 controls plane	Control plane	3GPP2 network
			X.S0024	User plane	3GPP2 network

UE can support the zero for emergency VoIP call, one or more location solution (such as, SUPL or 3GPP controls plane, or SUPL and 3GPP controls plane, or SUPL and X.S0024).UE can make During calling (such as) in SIP INVITE and/or SIP REGISTER message to its stationkeeping ability of network advertisement.This letter Breath is storable in home server (such as, location server) for by network retrieval.

Technique described herein can support following characteristics.

A () supports emergency VoIP call for mobile, fixing and mobile users.

B () is suitable for use with GPRS access, 3GPP WLAN accesses, cdma2000 accesses and 3GPP2WLAN connects The voip call entered.

C the end-to-end IP connectivity of the PSAP of SIP/IP is supported and be can use to ().

D () supports and can use the connectivity of the PSAP of PSTN, the PSAP of described available PSTN can send calling UE is local but is geographically distant from SIP call server, such as when VoIP service provider is away from UE.

E () supports to use centre position to estimate call routing is to suitable PSAP.

F () provides the accurate location of UE to PSAP.

G () is supported to use the initial of various positions framework and updated location.

H () support does not have the UE's of roaming agreement from UE and H-PLMN and V-PLMN without UICC/UIM Emergency VoIP call.

I () is supported from PSAP to the callback of the UE without not having roaming agreement UICC/UIM and/or V-PLMN.

J () (such as, services (i2) for enhancement mode 9-1-1 with IETF Ecrit solution and NENA solution Middle VoIP framework, also referred to as NENA I2 solution) compatible.

K () is little on impact and the requirement of H-PLMN.

PSAP callback refers to return the calling of UE from PSAP, such as because urgent call goes offline or sends too early.In Between location estimation typically refer to for route approximate location, and initial position estimation typically refer to first accurate location estimate. In some cases, initial location estimation can be obtained after centre position is estimated.In other cases, middle with just Beginning location estimation can be identical.At other in the case of other, centre position can not be used to estimate and/or initial position Estimate.

For SUPL, can bypass ownership SLP (H-SLP) in H-PLMN 160, and in V-PLMN 130 or with One or more V-SLP and/or E-SLP that V-PLMN 130 is associated can be used for positioning.For X.S0024, Can bypass ownership PS (H-PS) in H-PLMN 160, and in V-PLMN 130 or relevant to V-PLMN 130 One or more V-PS and/or E-PS of connection can be used for positioning.Which imply that for SUPL and X.S0024 A little changes, H-SLP or H-PS that such as can be configured in override UE 110 during urgent call is for location.Can Can due to the fact that and need in V-PLMN 130 use V-SLP, E-SLP, E-PS or V-PS:

A the special urgent call support of () particular locality or country should utilize the network rather than its being only from those areas The support of its network.

B () does not have the UE of UICC/UIM may not have H-PLMN, and can be dependent on the SLP in V-PLMN Or PS.

C (), for having the UE of UICC/UIM, H-PLMN may not have the roaming agreement with V-PLMN, and It is likely difficult to use H-SLP or H-PS.

D () H-SLP or H-PS is likely to be due to signaling difference and lacks the reason of registration and do not support from long-range PSAP (example As, another country) position requests.

E () H-SLP or H-PS may not obtain good under the auxiliary of V-SLP or V-PS not having in V-PLMN Good location estimation (such as, if H-SLP or H-PS is away from UE).

F () H-SLP or H-PS may not support to be used to support the interface (example of emergency call service by E-SLP or E-PS As, Li or LCS-i interface).

E-SLP 272 or E-PS 282 can perform the location to the UE 110 in SUPL and X.S0024 respectively.Or, Such as, if E-SLP 272 or E-PS 282 can not perform this function, then optional V-SLP, V-PS or PDE Perform the location to UE 110.Such as, if SIP call server (such as, E-CSCF 254) is away from UE 110 And select also away from E-SLP or E-PS (this can operator use a small amount of call server serve larger area or Occur during whole country), then V-SLP, V-PS or PDE come in handy.E-SLP 272 or E-PS 282 can use Any one selection V-SLP, V-PS or PDE in following mechanism:

A () UE 110 finds IP address or V-SLP or V-PS when being attached to access network or setting up IP connectivity Title, V-SLP or V-PS address is supplied to UE 110 by such as access network.UE 110 also can connect setting up IP Inquired by DNS after property and find V-SLP or V-PS address.This is applicable to the DNS clothes that UE 110 is used When business device is more in UE 110 this locality than E-CSCF 254.UE 110 can comprise the initial SIP being sent to IMS V-SLP or V-PS in REGISTER or in handing over to any follow-up re-REGISTER after new access network Address.V-SLP or V-PS address can be passed to E-SLP 272 or E-PS 282 by IMS (such as, E-CSCF 254).

B () E-SLP 272 or E-PS 282 comes really based on the positional information provided by UE 110 in initial SIP INVITE Determine V-SLP or V-PS address.

C () E-SLP 272 or E-PS 282 comes really based on the positional information received from UE 110 in SUPL START Determine V-SLP or V-PS address.

In general, UE 110 positional information provided can be any information of the position that can be used for determining UE 110. Positional information can include that geographical coordinate, GSM, UMTS or cdma2000 cell ID (ID), cdma2000 service is little District's information, WLAN access name identification, WLAN MAC Address etc..Positional information may also include and can be used for determining UE The measured value of the position of 110.

SUPL INIT can be sent to UE 110 to open for SUPL and X.S0024, E-SLP 272 or E-PS 282 The session of beginning SUPL.WAP Push or SMS can be used to send SUPL INIT, and this may result in long delay.One In embodiment, in order to reduce delay, IMS can be used via IMS (such as, P-CSCF 252 and E-CSCF 254) Instant message, other IMS message a certain, SIP 1xx response (such as, 183 session process) or other message a certain will SUPL INIT is sent to UE 110.Existing (possible safety) between IMS with UE 110 is used to associate realization very fast Transmission, and avoid further setting up the extra delay of new association and/or by additional entities (such as, SMS service center) Transmit message.This embodiment also can not register (such as, not having UICC or UIM) at UE 110 in H-PLMN Time use.In another embodiment, in order to reduce delay, mobile terminal IP or UDP/IP can be used SUPL INIT It is sent to UE 110.In the case, the IP address of available E-SLP 272 manages IP gateway service UE 110 (example in advance As, GGSN 232b, PDG 236, PDSN 242 or PDIF 244) so that IP bag will not be leached into from E-SLP 272 UE 110.UE 110 can be configured to support for SUPL (and registering to IANA) for receiving SUPL INIT Tcp port and/or udp port.

Can support that urgent VoIP exhales with the initial version (3GPP2X.S0024-0) of SUPL 1.0 and X.S0024 as follows Cry.

If a () UE 110 is in H-PLMN 160, then E-SLP 272 is H-SLP or E-PS 282 of UE It is the H-PS of UE and calls the position requests of SUPL 1.0 or X.S0024-0 network initial.SMS or WAP can be used Push and SUPL INIT is sent to UE 110.

If b () UE 110 is not in H-PLMN 160 but register in V-PLMN 130, then E-SLP 272 By serving as the SLP (R-SLP) of the request of sending and according to the program in SUPL 1.0 and OMA RLP, position can be asked Ask the H-SLP being sent to UE 110 to call SUPL 1.0 position requests.Similarly, E-PS 282 can use (such as) OMA RLP agreement calls the X.S0024 position requests from the H-PS for UE 110.

If c () UE 110 is not in H-PLMN 160 and do not register (such as, V-PLMN in V-PLMN 130 Between 130 and H-PLMN 160, not there is roaming agreement) if or UE 110 not there is UICC or UIM, then no Support SUPL 1.0 or X.S0024-0 position.But, E-SLP 272 or E-PS 282 may remain able to for promptly Calling uses the positional information provided by UE 110 in initial SIP INVITE to obtain the location estimation of UE 110.

1.There is the emergency VoIP call of SUPL

Fig. 4 shows the block diagram of the embodiment of the network architecture 400 of the emergency VoIP call with SUPL position.Network rack Structure 400 is applicable to 3GPP and 3GPP2 network.For simplicity, Fig. 4 only shows and supports to use SUPL The relevant entity of emergency VoIP call and interface.

In SUPL, UE 110 is referred to as the terminal (SET) of available SUPL.Access network 120 can be that 3GPP connects Enter network, 3GPP2 access network, other network of WLAN or a certain.Access network 120 and/or V-PLMN 130 is wrapped Containing support packet switched call entity, (such as) as shown in Figures 2 and 3.For 3GPP2, simple IP and or shifting Dynamic IP can be used for emergency VoIP call.In the following description, IMS can relate to P-CSCF 252, E-CSCF 254 and/ Or MGCF 258.

E-SLP 272 can comprise SUPL place-centric (E-SLC) 412 He performing the various functions for location-based service Support the SUPL centre of location (E-SPC) 414 of the location for UE.V-SLP 274 can comprise V-SLC 422 similarly With V-SPC 424.E-SLP 272 can replace the H-SLP in H-PLMN 160 in the case of the location to urgent call. The document OMA-AD-SUPL-V2_0-20060704-D of entitled " Secure User Plane Location Architecture " In (drawing up version 4.0, on July 4th, 2006) and the document of entitled " User Plane Location Protocol " OMA-TS-ULP-V2_0-20060721-D (drawing up version 2.0, on July 21st, 2006) describes in SUPL Entity, described document can open at OMA obtain.

SUPL supports that two kinds of communication patterns between SET and SLP position for SPC.In proxy mode, SPC does not have and directly the communicating of SET, and SLP serves as the agency between SET and SPC.In non-proxy mode, SPC has and directly the communicating of SET.

PSTN/ the Internet 170 can comprise to be supported the entity (such as, router) of packet route and routes emergency calls to The selective router (S/R) 292 of PSAP.S/R 292 can belong to PSAP 180 or can be total to by one group of indivedual PSAP With and be connected to described group of indivedual PSAP.If PSAP 180 supports SIP, then UE 110 can be for voip call Communicate via P-CSCF 252 and E-CSCF 254 and PSAP 180.If PSAP 180 does not support SIP, then UE 110 also can communicate via P-CSCF 252, E-CSCF 254, MGCF 258 and S/R 292 and PSAP 180.At this In the case of, MGCF 258 WMG (MGW) controlled performs VoIP to PCM circuit mould for urgent call The conversion of formula.

Fig. 4 also shows that the interface between each entity.UE 110、P-CSCF 252、E-CSCF 254、MGCF 258 Between calling relevant interface can be SIP.Calling relevant interface between MGCF 258, S/R 292 and PSAP 180 Can be MF/ISUP.Location dependent interface between PSAP 180 and E-SLP 272 can be J-STD-036 revised edition The E2 interface (if PSAP 180 can use PSTN) defined in B or the extension of E2 interface are (if PSAP 180 can With SIP).Location dependent interface between PSAP 180 and E-SLP 272 can change into being OMA or LIF shift position association The MLP interface defined in view or other interface a certain, such as HTTP interface.UE 110 and V-SLP 274 and E-SLP Location dependent interface between 272 can be SUPL ULP.

Interface between E-CSCF 254 and E-SLP 272 is for conveying to E-SLP 272 by the information about UE 110 And excite SUPL to position.This interface can be LCS IMS (such as, Li) interface, and available IMS location protocols Or other agreement a certain (ILP).Li/ILP interface can be similar to the OMA roaming location protocol (RLP) between SLP. Li/ILP interface can be used to support by any IMS entity (such as, S-CSCF or application server) and E-SLP 272 The further feature being associated with service based on IMS and IP, such as:

(a) keeping accounts according to position for VoIP or other IP-based calling,

B the position of the side being in calling is supplied to one or more other sides by (), and

(c) assistant service based on customer location, such as according to position call diversion, according to position calling get rid of.

Interface between E-SLP 272 and E-CSCF 254 can also is that the " draft of VoIP/ packet migration i2 solution NENA standard " in or middle the VoIP framework of (i2) " enhancement mode 9-1-1 service " (hereinafter " NENA I2 solution Scheme ") in the v2 interface (it is considered for E911 VoIP in the U.S. and supports) that defines, or other interface a certain.

The network architecture 400 can comprise support VoIP and/or other entity of position, such as NENA I2 solution or grass Element described in case NENA I2.5 and I3 solution.

1.1.Call setting

Fig. 5 shows the embodiment of the message stream 500 using the emergency VoIP call of SUPL to arrange.For the sake of clarity, Less relevant entity (such as, access network 120, P-CSCF 252, S/R 292) omits from Fig. 5 but is included in In below describing.Message stream 500 can be used for 3GPP and 3GPP2 network.Message stream 500 supposes that UE 110 has UICC Or there is roaming agreement between UIM, and H-PLMN 160 and V-PLMN 130.

In step 1, UE 110 finds access network (AN), such as 3GPP access network, 3GPP2 access network, 802.11WLAN etc..UE 110 performs any rudimentary connection (such as, 802.11 association) and is attached to access network (example As, via GPRS attachment or WLAN AAA program (for 3GPP)).UE 110 sets up IP connectivity and can send out Existing local sip server address.In the following description, P-CSCF 252 is the local SIP service found by UE 110 Device.Step 1 can perform by different way for heterogeneous networks and step 1 is further detailed below.

In step 2, SIP REGISTER is sent to P-CSCF 252, P-CSCF 252 by UE 110 is in step 1 The local sip server of middle discovery.SIP REGISTER can comprise emergency services instruction, emergency public user ID (example As, in 3GPP TR 23.867 and described in 3GPP TS 23.167), private user ID, H-PLMN domain name and step The UE IP address obtained in rapid 1.SIP REGISTER also can comprise the positional information of UE 110, the location of UE 110 Ability and/or out of Memory.UE stationkeeping ability can include location solution that UE 110 supported (such as, SUPL, 3GPP controls plane, X.S0024 etc.), the localization method supported of UE 110 and/or out of Memory.Urgent owing to existing Service instruction or the reason of emergency public user ID, so SIP REGISTER is forwarded to identical net by P-CSCF 252 E-CSCF 254 in network, and the I-CSCF 262 being forwarded to unlike under nonemergency in H-PLMN 160.

In step 3, the E-CSCF 254 in V-PLMN 130 is occurring SIP in the case of normal IMS registration REGISTER is forwarded to the S-CSCF 264 in H-PLMN 160.In H-PLMN 160, the reason of registration is (1) Checking ID, (2) obtain the verified callback number from S-CSCF 264, (3) warning H-PLMN 160 Described urgent call so that if PSAP 180 is subsequently via H-PLMN 160 callback UE 110, then spy can be applied Different process (such as, the priority of supplemental services, restriction).For IMS registration, the S-CSCF 264 in H-PLMN 160 E-CSCF 254 in V-PLMN 130 is regarded as such as P-CSCF.The emergency public user ID of available UE 110 is hidden Registration common user TEL URI containing ground (such as, derive from the MIN in MSISDN or 3GPP2 in 3GPP), and Described common user TEL URI can be used for the PSAP callback from PSTN.Such as, if UE 110 is registered normally If common user ID or H-PLMN 160 does not support emergency public user ID, then H-PLMN 160 can not support The extra registration of emergency public user ID.E-CSCF 254 can maintain the row that can skip the targeted H-PLMN of step 3 Table.If skipping step 3, then by using the normal Public User ID of the UE 110 that individually should be registered by UE 110, Callback from PSAP 180 is still possible.E-CSCF 254 also can assign temporary Public User ID to UE 110, As described below, to realize directly carrying out back from PSAP 180 not via H-PLMN 160 via V-PLMN 130 Cry.This temporary Public User ID is used especially for the UE of roaming abroad, because the delay of callback and reliability are the most available Improve.If the registration not performed in H-PLMN 160, then do not verify UE 110 and can not set up UE 110 with Safe IP between E-CSCF 254 in V-PLMN 130 connects, and this may reduce E-SLP 272 to UE's 110 The safety of follow-up location.

In step 4, E-CSCF 254 (such as, after receiving SIP 200 OK from H-PLMN 160) is by 200 OK returns to UE 110.After arranging urgent call, if UE 110 is handed over to difference in same V-PLMN SGSN (accessing for GPRS), different WLAN (accessing for WLAN) or different PCF or PDSN (accessing for cdma2000), then UE 110 can be by repeating step 2 to 4 re-registration to update position and V-SLP Information.If using its emergency public user ID re-registration, then any new positional information can be passed by E-CSCF 254 It is delivered to E-SLP 272.If re-registration makes UE 110 just can outside having been moved out the geographic area that previous V-SLP is supported Enough select different V-SLP.

3GPP2 WLAN is accessed, if UE 110 moves to another WLAN or from WLAN from a WLAN Move to cdma2000 network, then handoff procedures can be performed.Handoff procedures can be set up from new WLAN (for from the handover of a WLAN to another WLAN) or from new PSDN (for from WLAN to The handover of cdma2000 network) to the new tunnel of previous PIDF, in order to it is continuing with being associated with previous PDIF IP address and avoidance breakout emergency VoIP call.For the handover from cdma2000 network to WLAN, with The PDIF that new WLAN is associated simulated target PDSN can support that the most more district arriving previously service PDSN cuts Change.After handover, UE 110 can re-registration with to E-CSCF 254 provide relevant new positional information come for V-SLP selects.

In the alternate embodiment of step 2,3 and 4, SIP REGISTER is sent to P-CSCF by UE 110 in step 2 After 252, the S-CSCF 264 that SIP REGISTER can be forwarded directly in H-PLMN 160 by P-CSCF 252 Or the I-CSCF 262 that is forwarded in H-PLMN 160 E-CSCF 254 walking around in V-PLMN 130.In these feelings Under condition, the SIP 200OK from H-PLMN 160 will return to P-CSCF 252 and not return to E-CSCF 254, And P-CSCF 252 will return to UE 110 200OK in step 4.It is right that this alternate embodiment can be reduced or avoided P-CSCF 252 supports the Special Influence of VoIP urgent call, because the action of P-CSCF 252 is then as at normal note Action during volume.

In steps of 5, SIP INVITE is sent to P-CSCF 252 by UE 110.It is tight that SIP INVITE can comprise instruction Call on the overall SIP URL cried or TEL URI (the sos@local domain such as, IETF Ecrit proposed or " 911 ") urgently Type with the emergency services asked.SIP INVITE also can comprise about UE 110 can the information (example of UE position Such as, GPRS or cdma2000 community ID, WLAN AP MAC Address etc.), the stationkeeping ability of UE 110 (if note Do not there is provided during Ce), for the contact details of callback and/or out of Memory.(such as, call-back information can comprise TEL URI Derive from 3GPP MSISDN or 3GPP2MDN) and (such as, use in step 2 is urgent may to comprise SIP URL Common user ID)." support " header field of SIP REGISTER or SIP INVITE can also be used for passing on UE Stationkeeping ability.The part of positional information that stationkeeping ability also can be included as being provided by UE is (such as, at IETF In Geopriv pidf-lo object) or be included in some other manner in SIP INVITE.P-CSCF 252 can be by SIP INVITE is forwarded to another sip server, and SIP INVITE can be forwarded to be exclusively used in tightly by another sip server described Call on the route agent's (such as, application server) cried urgently.In Fig. 5, E-CSCF 254 is the SIP processing urgent call Server.

In step 6, E-CSCF 254 can explicitly or implicitly determine UE 110 support SUPL and by route requests (or Emergency location is asked) it is sent to E-SLP 272.Route requests can comprise UE public identifier (such as, from step 5 Emergency public user ID, TEL URI etc.), any positional information of being received by E-CSCF 254 and UE IP address (as Step 8 really will use mobile terminal IP (or UDP/IP)).E-SLP 272 can be with E-CSCF 254 at identical network In or in other network a certain.Optional E-SLP 272, because it covers the geography of the apparent position comprising UE 110 Region.E-CSCF 254 may select E-SLP 272 (potentially acting as the general position server of E-SLP), or some other The server of type, such as GMLC 276.Selected location server can be fixed based on the UE transmitted by E-CSCF 254 Capability (or simply by assume) and elect use SUPL.E-CSCF 254 can ask from E-SLP's 272 Positional information and/or selection are corresponding to available positional information and the PSAP of emergency services type.

Enough accurately disclosure satisfy that in step 6 if the positional information provided in step 6 makes E-SLP 272 to derive The location estimation of UE 110 of request (such as, determining destination PSAP uniquely), then E-SLP 272 advances To step 12.Otherwise, perform step 7 to 11 to estimate with the appropriate location obtaining UE 110.

In step 7, E-SLP 272 determines whether to use single V-SLP to help according to the positional information received Help location.If it is then V-SLP (such as, V-SLP can be selected based on the positional information received from E-CSCF 254 274).E-SLP 272 serves as H-SLP and uses and can support (if selecting V-SLP) with for (a) SUPL 1.0 roaming Or the program that the program of the non-roaming support of (b) SUPL 1.0 (if non-selected V-SLP) is similar to performs follow-up SUPL Location.In roaming situations, E-SLP 272 can exchange a certain preparation RLP signaling with V-SLC 422, and it is in Figure 5 Do not show.E-SLP 272 then uses agency or non-proxy mode to produce SUPL INIT with to UE 110 in SUPL Excite the finder of network initial.E-SLP 272 can use mobile terminal IP or UDP/IP by direct for SUPL INIT It is sent to UE 110, can skip step 8 in the case.E-SLP 272 also can (such as, IMS be instant at instant message Message or other IMS a certain or sip message) internal SUPL INIT is sent to E-CSCF 254.At either case Under, SUPL INIT all can comprise the SPC for positioning, and (it can be that E-SPC 414 or V-SPC 424 is (if using non- Proxy mode)) IP address, alignment quality (QoP) accuracy/delay that quick centre position is estimated require, Proxy/non-proxy mode instruction, checking data and/or out of Memory.Such as, if UE 110 is not in its home network, If E-SLP 272 is not intended to the H-SLP of UE 110, if or E-SLP 272 be described H-SLP but select not table It is now H-SLP (such as, in order to avoid supporting more than one program for urgent call), then SUPL INIT also can comprise The IP address of E-SLP 272.SUPL INIT also (such as) can comprise urgent call in SUPL INIT notifying parameters Instruction.

In step 8, E-CSCF 254 uses IMS instant message, other IMS message a certain, SIP 1xx to respond (example Such as, 183 session processes) or use the E-CSCF 254, the P-CSCF 252 and UE 110 that set up in step 2 to 4 it Between safe IP association other IP-based message a certain, via P-CSCF 252, SUPL INIT is forwarded to UE 110。

In step 9, UE 110 is established to the safe IP (such as, safe TCP/IP) of E-SLP 272 and connects, institute State E-SLP 272 and could be for what the H-SLP of UE 110 or may be comprised its address sent in step 7 In SUPL INIT.For non-proxy mode, UE 110 obtains checking data from E-SLP 272 (not shown), and leads to Cross and the safe IP connection that be established to E-SPC 414 or V-SPC 424 is mutually authenticated.E-SLC 412 is also at non-proxy mould Formula (is not shown in Fig. 5) information is conveyed to E-SPC 414 or V-SPC 424.UE 110 can obtain and be received Position correlation measure consistent for QoP (such as, signal level and/or the timing of neighbor cell) or location estimation (example As, use independent GPS).SUPL POS INIT is then returned to E-SLP 272 (in proxy mode) by UE 110 Or E-SPC 414 or V-SPC 424 (in the non-proxy mode do not shown in Figure 5).SUPL POS INIT can wrap It is contained in proxy mode hash code, UE stationkeeping ability, location estimation for verifying or A-GPS assistance data is asked Ask (it can also reside in embedded SUPL POS message (for IS-801)).SUPL POS INIT also can comprise The position correlation measure that quick centre position is estimated and avoided further SUPL POS signaling is obtained for auxiliary.Right In 3GPP, described measured value can include adjacent base station or the signal level of access point, GPRS timing advance, WCDMA Rx-Tx time difference etc..For 3GPP2, described measured value can include relevant with cdma2000 or 3GPP2WLAN Position correlation measure.

In step 10, if step 9 does not receives suitable location estimation (or position measurements), then E-SLP 272, E-SPC 414 or V-SPC 424 can exchange extra SUPL POS message with UE 110.Each SUPL POS Message can comprise embedded RRLP, RRC or IS-801 localization message.This message exchange continues, until will fill Till the alignment measurement divided or location estimation provide E-SLP 272, E-SPC 414 or V-SPC 424.In step 11 In, SUPL END is returned to UE 110 to terminate SUPL transaction.

In step 12, E-SLP 272, E-SPC 414 or V-SPC 424 receive according in step 9 or step 10 Positional information calculation UE 110 centre position estimate.For non-proxy mode, E-SPC 414 or V-SPC 424 will Location estimation conveys to E-SLC 412.Based on location estimation, and if in step 6 E-CSCF 254 have issued request, So E-SLP 272 selects PSAP.Hereinafter describe and suppose that PSAP 180 is selected PSAP.If PSAP 180 can Access/enable PSTN, then E-SLP 272 obtains (a) and can be used for being routed to the emergency services route number of PSAP 180 The telephone number that word (ESRD) can not be dialled is with (b) identification PSAP 180, E-SLP's 272 and (temporarily) UE 110 The telephone number that Emergency Service Routing Key (ESRK) can not be dialled.Each PSAP can be with an ESRD and identification The ESRK cluster of E-SLP 272 and described PSAP is associated.For each promptly being exhaled to what this PSAP was carried out by UE Crying, an ESRK from described cluster can be assigned to UE the persistent period of persistently urgent call.Can not be by these Some functions in function (such as, ESRD/ESRK manages) are considered as a part of SUPL, and can be can be by E-SLP The most physically or logically entity of 272 inquiries being supported, more described functions are (such as, such as institute in NENA I2 solution Describe).Telephone number (the example of the same names that ESRD and ESRK supports corresponding to the urgent call in line mode As, J-STD-036).ESRD and ESRK also correspond respectively to ESRN described in NENA I2 solution and ESQK。

In step 13, route response (or emergency location response) is returned to E-CSCF 254 by E-SLP 272, described Route response can comprise (a) PSAP mark (it can be SIP URL or IP address) (if PSAP 180 can use Or (b) ESRD and ESRK (if PSAP 180 can use PSTN) IP).If E-CSCF 254 makes request, So route response also can comprise the centre position estimation of UE 110.E-SLP 272 can be that UE 110 storage is containing promising UE The call record of all information collected.

If PSAP 180 IP available, then perform step 14a and 15a.In step 14a, E-CSCF 254 will SIP INVITE (being received in step 5) is routed to PSAP 180.SIP INVITE can comprise centre position estimate and can The mark of UE 110 or the IP address of address and E-SLP 272 or title can be comprised.In step 15a, commutative Extra SIP signaling is to set up urgent call.

If PSAP 180 can use PSTN, then perform step 14b, 14c and 15b.In step 14b, E-CSCF SIP INVITE is forwarded to MGCF 258 via interrupting gateway control function (BGCF) by 254.SIP INVITE can The callback number (such as, MSISDN or MDN) that comprises UE 110 and/or ESRD and ESRK can be comprised (but may Do not comprise centre position to estimate).In step 14c, MGCF 258 uses SS7 ISUP and/or mf signaling by urgent Calling is routed to PSAP 180 via PSTN (may be via selective router).ESRD or ESRK can be used as road By number, and ESRK and/or callback number be delivered to PSAP 180 (such as, via MF CAMA signaling) as UE 110 Mark and as key to obtain more information.In step 15b, commutative extra SIP signaling, and can be at MGCF Occur the interworking of SS7 ISUP and/or MF to set up urgent call at 258.

Individually set up the call path of the PSAP of PSAP and available PSTN for IP available.For available PSTN PSAP, VoIP (such as, RTP/IP) and line mode (such as, PCM) between interworking by MGCF 258 WMG (MGW) places controlled occur.For the PSAP of IP available, call path will be end-to-end IP, And may part advance between UE 110 and PSAP 180 via public the Internet or private ip network, but will jump Cross any MGW.

In step 16, after the call is established, position requests can be sent to E-SLP 272 by PSAP 180, described E-SLP 272 can be identified by the ESRK obtained in the IP address obtained in step 14a or title or step 14c. (such as, PSAP 180 uses UE common user address (if PSAP 180 IP available) or callback number or other address MSISDN or MDN) or ESRK (if PSAP 180 can be with PSTN) identify UE 110.Position requests refers to Show the request for location estimation accurately.For the emergency VoIP call of the U.S., position requests can with in J-STD-036 Emergency service locations ask identical (if PSAP 180 can use PSTN), and can be this message extension (if PSAP 180 IP available).For the emergency VoIP call in some other area in the world, position requests can with for OMA The emergency location that MLP defines is asked identical immediately.

In step 17, if the stationkeeping ability of E-SLP 272 does not extends to report that UE's 110 is the most known wherein If the geographic area of position or use V-SLP can provide more accurate and reliable position, then E-SLP 272 may select V-SLP.E-SLP 272 can be from the proximal most position of UE 110 and/or from the nearest V-SLP ground provided by E-CSCF 254 Location obtains V-SLP address.In order to ensure correct V-SLP, if E-CSCF 254 UE's 110 in step 4 appoints The most automatically this information is transmitted, then E-SLP 272 can inquire the position of UE 110 and/or from E-CSCF after what re-registration The V-SLP address (not showing in Fig. 5) of 254.E-SLP 272 then can be by using mobile terminal IP or UDP/IP SUPL INIT is sent directly to UE (in the case, can skip step 18) or by will be containing SUPL INIT Instant message be sent to E-CSCF 254 and start the new SUPL transaction with UE 110.SUPL INIT can comprise The parameter described above with respect to step 7.

In step 18, E-CSCF 254 is at IMS instant message, a certain other IMS message, sip message (such as, Re-INVITE) or use that safe IP between E-CSCF 254, P-CSCF 252 and UE 110 associates a certain other Inside IP-based message, SUPL INIT is delivered to UE 110.

In step 19, UE 110 is established to the safe IP of E-SLP 272 and connects.UE 110 then can act on behalf of mould Formula exchanges with E-SLP 272 SUPL message or exchanges with E-SPC 414 or V-SPC 424 in non-proxy mode SUPL message (being similar to step 9,10 and 11) is estimated with the accurate location obtaining UE.

In step 20, the accurate location of UE 110 is estimated to be sent to PSAP 180 in position responds by E-SLP 272. For the urgent call of the U.S., if PSAP 180 can use PSTN, then position response can with for E2 interface Therefore emergency service locations response message in J-STD-036 is identical (and can comprise the MSISDN single-candidate of such as UE 110 External information).For the urgent call in some other area in the world, position response can be tight with define for OMA MLP Anxious position immediate acknowledgment is identical.

UE 110 can communicate with PSAP 180 for emergency VoIP call subsequently.When sending calling after a while, E-CSCF 254 E-SLP 272, described E-SLP 272 can be sent an indication to and then can send any record of calling.E-CSCF 254 Or the emergency public user ID that UE 110 also can be registered in logging-out step 2 to 4.Or, E-CSCF 254, E-SLP 272 and UE 110 can allow registration and call record to continue certain period may be subsequently from PSAP 180 to UE with support The callback of 110 and/or additional positions request.

1.2.Access

For step 1, UE 110 can access via GPRS, cdma2000 accesses or WLAN accesses and is connected to access Network.Step 1 can be performed by different way for different types of access.

Accessing for GPRS, UE 110 can perform GPRS and be attached to be attached to 3GPP access network, and can perform GPRS packet data protocol (PDP) context activation to set up the IP connectivity in SGSN 232a and GGSN 232b, As described in 3GPP TR 23.867 and TS 23.060.Urgent instruction can be used for GPRS attachment, and/or for promptly The overall APN (APN) of service can be used for PDP context activation, and it can ensure that and carries in V-PLMN 130 For GGSN and P-CSCF.P-CSCF 252 can be the service GPRS PLMN as provided during PDP context activation In P-CSCF.

Accessing for 3GPP WLAN, UE 110 can perform WLAN AAA program to be attached to WLAN, and can hold Row I-WLAN tunnel is set up to realize arriving the IP connectivity of PDG 236.UE 110 can be by asking with authorizing in checking Ask use instruction both H-PLMN 160 and V-PLMN 130 roaming network access identifier (NAI) and from V-PLMN 130 selects service.3 GPP TS 23.234 and TS 23.003 describe roaming NAI.This guarantees UE 110 Can the PDG 236 from the V-PLMN 130 rather than PDG from H-PLMN 160 (if H-PLMN 160 is remote From, then this may limit PSAP and access) obtain the IP access for IMS service.The overall situation for emergency services WLAN APN (W-APN) can be used for PDG and finds and tunnel foundation.This service can use globally unique external network Identifier (being used for supporting emergency services) and V-PLMN mark.P-CSCF 252 can be associated with WLAN P-CSCF in V-PLMN, and can find via the DNS of W-APN is inquired.

Accessing for cdma2000, UE 110 obtains simple IP address rather than mobile IP address, because from V-PLMN 130 rather than H-PLMN 160 obtain service.Or, UE 110 can be from V-PLMN 130 rather than as movement Mobile IP address is obtained from H-PLMN 160 as compared with normal for IP address.IP address can be IPv4 address or IPv6 address.If UE 110 not yet sets up connectivity (such as, not having the IP address of assignment), then UE 110 Point-to-point protocol (PPP) session can be set up and the PDSN in V-PLMN 130 242 performs any checking and mandate, As described in 3GPP2X.P0011D and TIA-835-D.UE 110 (such as) can use PPP Internet Protocol control Agreement processed (IPCP) obtains simple IP address.If the built vertical IP connectivity of UE 110 also has arrival PDSN 242 PPP session but the mobile IP address that is assigned in H-PLMN 160 rather than simple IP address, then if UE 110 cannot support that (this is optional in TIA-835D but optional UE for simple IP simultaneously and mobile IP address Ability), then UE 110 can terminate any packet sessions of being associated with these IP addresses and any IMS registration. UE 110 then can obtain simple IP address as described in TIA-835D.If UE 110 can support letter simultaneously Single and mobile IP address, then if UE 110 not yet has a simple IP address and the most just can obtain simple IP Address.

Accessing for cdma2000, UE 110 can use DHCP or IPCP from Dynamic Host Configuration Protocol server or PDSN by (a) 242 obtain P-CSCF domain names and dns address and then (b) use DNS obtain one or one from dns server Above P-CSCF IP address finds P-CSCF address.If UE 110 moves and accesses new RAN, then if Need new target PDSN and built vertical emergency VoIP call, then V-PLMN 130 and UE 110 can use Fast Handoff program described in TIA-835-D.This avoids the needs terminating and re-establishing calling.

Accessing for 3GPP2 WLAN, UE 110 can perform existing WLAN joining procedure, comprise AAA, IP Address acquisition and acquiescence ip router and the discovery (such as, via DHCP) of dns server address.UE 110 connects The PDIF in accessible PLMN, described PLMN and support the geographical position of the WLAN accessed from UE 110 Urgent call.WLAN can notice the cdma2000 network being associated so as to distinguish and support urgent call PLMN.Can (such as) by sending out in IEEE 802.11 beacon frame or via UE probe request is responded Send the service group identifier (SSID) being associated to realize this to notice.Can be by using each instruction being advertised PLMN Accord with or by assuring that (such as, it is desirable to) all PLMN of being advertised all support what urgent call was advertised according to PLMN Secondary ordered pair PLMN prioritized.For initial WLAN access, AAA and IP address acquisition, UE 110 The optional PLMN (such as, SSID) being implied or being designated as to support urgent call.

At initial WLAN access, AAA, IP address acquisition and discovery default router and dns server address Afterwards, UE 110 can create the most qualified domain name (FQDN) of instruction IMS service, and use is led to WLAN The territory that one in the PLMN of the support urgent call accused is associated.UE 110 then can use FQDN find from The IP address of one or more PDIF of dns server.UE may select PDIF and uses 3GPP2 Program described in X.S0028-200 is established to the IPsec tunnel of described PDIF.This provides the second inside to UE 110 IP address, it can be used for follow-up IMS relative program.

After setting up the tunnel from WLAN to PDIF, UE 110 can access with UE and access from cdma2000 The mode identical for PDSN of network find P-CSCF address (such as, via DHCP obtain dns server address and Domain name also then obtains P-CSCF IP address via DNS).In the case, PDIF can replace PDSN to serve as Dhcp relay agent.Find that PIDF and P-CSCF address can comprise the instruction needing to support urgent call via DNS (such as, providing in the title of dns server).

If UE 110 had with the PDIF being not suitable in PLMN associate (such as, tunnel) and if UE 110 Asynchronously support to arrive the tunnel of different PDIF, then UE 110 selecting and can be established in new suitable PLMN New PDIF tunnel before send any packet sessions supported via current PDIF and send arrive PDIF tunnel.

After cdma2000 or WLAN access network connects, UE 110 can use with known V-PLMN domain name and V-SLP identifies that the DNS inquiry that (such as, supl_vslp@domain_name) is carried out finds SUPL V-SLP address.

Message stream 500 has the following interpolation feature relevant with OMA SUPL version 1.0.

A () adds E-SLP address in SUPL INIT, its override also replaces the H-SLP address of configuration in UE 110.

Interface between (b) IMS side (such as, E-CSCF 254) Yu side, position (such as, E-SLP 272).

C () uses V-SLP 274 and finds V-SLP address.

D () uses mobile terminal IP, UDP/IP, SIP or IMS signaling rather than SMS or WAP Push to send here pass on SUPL INIT, to reduce delay.

E () adds emergency services instruction in SUPL INIT.

F () preferably adds new position measurements in SUPL POS INIT.

G () uses ILP agreement between E-CSCF 254 and E-SLP 272, it can be similar to existing RLP.

(h) safety.

2.There is 3GPP and control the emergency VoIP call of plane

Fig. 6 shows the block diagram of the embodiment being applicable to the network architecture 600 that 3GPP controls plan-position.Rise in order to simple Seeing, Fig. 6 only shows and supports that having GPRS accesses and the relevant reality of emergency VoIP call of 3GPP control plan-position Body and interface.

Access network 120 can be GERAN or UTRAN.V-PLMN 130 can comprise P-CSCF 252, E-CSCF 254 and MGCF 258 to support IMS (such as, VoIP), SGSN/GGSN 232 and for packet-switched services GMLC 276 for location-based service.GMLC 276 replacement E-SLP 272 and be 3GPP 23.271, retouches in version 6 The enhancement mode version of the GMLC stated.V-PLMN 130 also can comprise the E-SLP 272 and V-SLP for location-based service Not 274 (not showing in Fig. 6).

In one embodiment, GMLC 276 communicates with E-CSCF 254 via Li interface and connects via J-STD-036E2 ' Mouth communicates with PSAP 180.Use identical Li interface can hide from E-CSCF for GMLC 276 and E-SLP 272 SUPL and 3GPP of 254 controls the position framework difference between plane.Similarly, for GMLC 276 and E-SLP 272 use identical J-STD-036E2 ' interface can hide the position framework difference from PSAP 180.Other in Fig. 6 connects Mouth is known in the art.

2.1.Call setting

Fig. 7 shows the embodiment of the message stream 700 using the emergency VoIP call of 3GPP control plane to arrange.In order to clearly Chu Qijian, less relevant entity (such as, access network 120, P-CSCF 252, S/R 292) omits from Fig. 7 But comprise in the following description.Message stream 700 supposes that UE 110 has UICC and H-PLMN 160 and V-PLMN 130 Between there is roaming agreement.

In step 1, if UE not yet carries out GPRS attachment, then UE 110 performs GPRS with emergency services instruction Attachment.GPRS attachment can need to obtain the access to SGSN 232a, the HLR/HSS performed from H-PLMN 160 Any checking of the subscription data of 266 to SGSN 232a and download etc..In step 2, UE 110 uses for urgent The overall APN of service performs PDP context activation.PDP Context is assigned to this locality in V-PLMN 130 GGSN (such as, and is not assigned to the GGSN in H-PLMN 160).UE 110 obtains IP address and can be at PDP Local sip server address (such as, P-CSCF 252) is found during context activation.

In step 3, SGSN 232 is based on the urgent instruction in step 1 or the overall situation for emergency services in step 2 APN and recognize the initial of urgent call.SGSN 232a then can hand in the packet described in initial 3GPP TS 23.271 The position requests (PS-NI-LR) of switching network induction obtains the centre position of UE 110 and estimates or accurate location estimation. If PS-NI-LR provides ratio SGSN 232 to wait and obtains location estimation (such as, via step 17 from GMLC 276 In MAP PSL) the response that please seek quickness.PS-NI-LR can be performed by initial SGSN.If UE 110 transfers To new SGSN, then new SGSN need not perform another PS-NI-LR.In step 4, UE 110 is once obtained Location estimation, SGSN 232 just can determine that GMLC address (such as, from current area ID) and can be containing position Estimate, UE identifies and/or MAP subscriber locations report (SLR) of out of Memory is sent to GMLC 276.UE identifies Can be that International Mobile Subscriber identifies (IMSI), mobile subscriber No. ISDN (MSISDN), International Mobile Station Equipment Identification (IMEI), Electronic Serial Number (ESN), Mobile Equipment Identifier (MEID) or other mark a certain.If performing step Rapid 4, then can skip step 10 and 11.

In steps of 5, the SIP REGISTER found in step 2 is sent to P-CSCF 252 by UE 110.SIP REGISTER can comprise above with respect in Fig. 5 step 2 describe information, and if will perform step 10 and 11, that Also can comprise SGSN address.Owing to there is emergency services instruction or emergency public user ID, so P-CSCF 252 The E-CSCF 254 that SIP REGISTER is forwarded in identical network.Step 5 can be with step 3 executed in parallel.In step In rapid 6, SIP REGISTER is forwarded to H-PLMN in the case of there is normal IMS registration by E-CSCF 254 160, similar with the step 3 in Fig. 5.

In step 7, after 200 OK are returned to E-CSCF 254 by H-PLMN 160,200 OK are returned To UE 110.Handover if there is the different SGSN arrived in V-PLMN 130, then UE 110 also may be used Re-registration.If UE 110 uses its emergency public user, ID carries out re-registration, then E-CSCF 254 can by any newly Positional information and/or any new SGSN address be delivered to GMLC 276.

As Fig. 5, in the alternate embodiment of step 5,6 and 7, UE 110 is by SIP REGISTER in steps of 5 After being sent to P-CSCF 252, SIP REGISTER can be forwarded directly in H-PLMN 160 by P-CSCF 252 S-CSCF 264 or I-CSCF 262, and walk around the E-CSCF 254 in V-PLMN 130.In the case, come P-CSCF 252 will be returned to from SIP 200 OK of H-PLMN 160 rather than return to E-CSCF 254, and 200 OK will be returned to UE 110 by P-CSCF 252 in step 7.It is right that this alternate embodiment can be reduced or avoided P-CSCF 252 supports the Special Influence of VoIP urgent call, because the action of P-CSCF 252 is then as at normal note Action during volume.

In step 8, SIP INVITE is sent to P-CSCF 252, described SIP INVITE and can comprise by UE 110 The information that literary composition describes for the step 5 in Fig. 5.SIP INVITE is forwarded to E-CSCF 254 by P-CSCF 252.

In step 9, supporting the UE of 3GPP control plane based on for group mode, E-CSCF 254 will route Request is sent to the GMLC 276 indicated by the Serving cell received in step 8 or other positional information.Route requests Information described in the step 6 of Fig. 5 and SGSN address (if providing during registering) can be provided.E-CSCF 254 Optional GMLC 276, the general position server potentially acting as GMLC or some other type of servers are (such as SLP).Selected location server can elect use 3GPP control based on the UE stationkeeping ability transmitted by E-CSCF 254 Plane processed.E-CSCF 254 can ask positional information and/or selection from GMLC 276 to be believed corresponding to available position The PSAP of the emergency services type ceased and asked.

Enough accurately disclosure satisfy that in step 9 if the positional information provided in step 9 makes GMLC 276 to derive The location estimation of UE 110 of request, then GMLC 276 proceeds to step 12.GMLC 276 also may wait for directly To it in step 4 from SGSN 232 receives MAP SLR, and if obtain appropriate location estimate, then front Enter step 12.Otherwise, perform step 10 and 11 to estimate to obtain the appropriate location of UE 110.

In step 10, GMLC 276 is by the MAP containing the QoP accuracy/delay estimated for quick centre position Subscriber locations (PSL) is provided to be sent to SGSN 232.If not performing step 4, then GMLC 276 can be from step Any explicit address received in 9 or positional information (such as, community ID) determine SGSN 232.If do not received If the SGSN to this information and initial selected incorrect (errored response received in step 11), then GMLC 276 Can inquire that the HSS of the IMSI by UE or pseudo-MSI or MSISDN instruction is to obtain SGSN address.In step 11 In, SGSN 232 can return to the location estimation obtained in step 3, till carrying out waiting until that step 3 completes, and connects Home position to estimate, or obtain location estimation from RAN and then location estimation is returned to GMLC 276.

In step 12, GMLC 276 selects PSAP based on location estimation.Hereinafter describe and suppose that PSAP 180 is selected PSAP.If PSAP 180 can use PSTN, then GMLC 276 obtains and can be used for being routed to PSAP's 180 Telephone number that ESRD can not dial and identify the ESRK of PSAP 180, GMLC 276 and (temporarily) UE 110 not The telephone number that can dial.

In step 13, GMLC 276 will can comprise the route sound of the information described above with respect to the step 13 in Fig. 5 E-CSCF 254 should be returned to.At step 14, urgent call is sent to PSAP 180, as the step in Fig. 5 Described by rapid 14a, 14b and 14c.In step 15, the remainder that urgent call is arranged is as the step in Fig. 5 Rapid 15a and 15b is carried out describedly.In step 16, position requests is sent in step 14 by IP by PSAP 180 Address/name or the GMLC 276 of ESRK instruction, as described by the step 16 in Fig. 5.

In step 17, MAP PSL is sent to SGSN 232 to ask accurate location by GMLC 276.GMLC 276 Can from the proximal most position information of UE 110 or obtain from the renewal from the SGSN address of E-CSCF 254 SGSN ground Location.If this address is received in re-REGISTER message but does not transmits, then GMLC 276 also can inquire from The SGSN address of E-CSCF 254.GMLC 276 also can inquire the IMSI or pseudo-MSI or MSISDN of free UE The SGSN address of the HSS of instruction.In step 18, SGSN 232 excites RAN to position UE 110.? In step 19, location estimation is returned to GMLC 276 by SGSN 232.In step 20, GMLC 276 is by position Estimate to return to PSAP 180, as described by the step 20 in Fig. 5.

UE 110 can communicate with PSAP 180 for emergency VoIP call subsequently.When sending calling after a while, E-CSCF 254 GMLC 276, described GMLC 276 can be sent an indication to and then can send any record of calling.E-CSCF 254 Or UE 110 also can the emergency public user ID of registration in logging-out step 5 to 7.Or, E-CSCF 254, GMLC 276 Registration and call record can be allowed to continue certain period with UE 110 may be subsequently from PSAP 180 to UE 110 with support Callback and/or additional positions request.

Message stream 700 performs the call setting of UE 110 and location with coordination mode and has following characteristics.

If as long as a () SGSN 232 can obtain UE position activation PDP Context and/or GMLC 276 makes and asking Ask and just push it to GMLC 276.

B () GMLC 276 can receive the public SIP-URI address of UE 110 from E-CSCF 254.

If c () PSAP 180 can use PSTN, then GMLC 276 and E-CSCF 254 will be used for identifying calling and The information (such as, 10 numerical digit ESRK) of both GMLC 276 is delivered to PSAP 180.This information makes PSAP 180 Position and out of Memory (such as, MSISDN, SIP URI) can be involved from GMLC 276.

(d) when SUPL is used as localization method, between E-CSCF 254 and location server (such as, E-SLP 272) Li interface can be used for supporting from the urgent call of I-WLAN.Phase is used for UMTS, GPRS and I-WLAN Same Li interface allows IMS (such as, E-CSCF 254) to operate in the case of needing not to be aware that location solution, This can simplify IMS process.

If e () UE 110 does not support that the location carried out by RAN (such as, is supported SUPL but do not supported that 3GPP is controlled Plane processed), then SGSN 232 can skip PS-NI-LR.

F () PSAP 180 can have an ad-hoc location requirement that SGSN 232 may be unaware that, such as certain accuracy or very To not supporting position coordinates (such as, if PSAP 180 supports E911 phase place 0 or 1).GMLC 276 supports This type of requires for circuit switched urgent call.

Li interface can be used for the feature realizing enumerating above.If identical platform supports GMLC and E-CSCF function, that Perhaps without supporting Li interface in outside.Li interface may extend into and uses between any IMS entity and GMLC The further feature being associated with service based on IMS and IP with support, as described above for described by SUPL.

Can estimate that (such as, Serving cell) selects SGSN 232 in centre position based on UE 110.Can be by E-CSCF 254 estimate to select GMLC 276 based on same centre position.Can estimate to be pushed to by centre position from SGSN 232 GMLC 276, or involved from SGSN 232 by GMLC 276.One entity can other entity identified below.

Centre position can be estimated to be pushed to GMLC 276 by SGSN 232.SGSN 232 can obtain this via PS-NI-LR Centre position is estimated, determines GMLC address according to current UE position (such as, current area ID), and uses Location estimation is sent/is pushed to GMLC 276 by MAP subscriber locations report (SLR).E-CSCF 254 can be to GMLC 276 inquiry PSAP addresses are to route urgent call.GMLC 276 may wait for (if necessary) from SGSN The MAP SLR of 232 is to determine PSAP address from centre position is estimated.

GMLC 276 can involve centre position from SGSN 232 and estimate.SGSN 232 still can perform PS-NI-LR but straight To GMLC via just location estimation being sent to GMLC 276 after MAP PSL request query location estimation.GMLC 276 can make one of with the following methods to determine SGSN address.

(a) GMLC 276 inquire from H-PLMN 160 HSS 266 (if UE 180 have UICC and In V-PLMN 130 support roaming) or V-PLMN 130 in HSS 250 (if UE 180 does not have UICC Or not there is the roaming agreement in V-PLMN 130) SGSN address.

B () UE 110 will can be used for deriving current SGSN address or positional information (such as, the GPRS of SGSN address Community ID) be included in be sent in each REGISTER and re-REGISTER message of IMS for urgent call or It is sent in each SIP INVITE of IMS.SGSN address or positional information are then transmitted by E-CSCF 254 To GMLC 276.Re-registration in ims after the UE 110 transfer between any SGSN.

3.There is the emergency VoIP call of X.S0024

Fig. 8 shows the block diagram of the embodiment of the network architecture 800 being applicable to the X.S0024 position for cdma2000 network. Access network 120 can include CDMA20001X network, CDMA20001xEV-DO network, 3GPP2WLAN etc.. V-PLMN 130 can comprise P-CSCF 252, E-CSCF 254 and MGCF 258 to support IMS (such as, VoIP) With the PDSN 242 (not shown) for packet-switched services.V-PLMN 130 can comprise E-PS 282 and V-PS/PDE 284 (as shown in the figure), and also can comprise the E-SLP 272 and V-SLP 274 (not shown) for location-based service.E-PS 282 Replace the H-PS location for urgent call.E-PS 282 and V-PS/PDE 284 can reside in other network.

In one embodiment, UE 110 communicate with E-PS 282 via LCS-x interface and via LCS-y interface with V-PS/PDE 284 communicates.E-PS 282 communicates with V-PS/PDE 284 via LCS-z interface, via LCS-i interface Communicate with E-CSCF 254, and communicate with PSAP 180 via J-STD-036E2 ' interface.LCS-i interface can be similar to V2 interface in RLP or Li/ILP, NENA I2 solution of SUPL or other interface a certain.For LCS-i The agreement of interface could be for the ILP of SUPL.X.S0024 describes LCS-x, LCS-y and LCS-z interface.

3.1.Call setting

Fig. 9 shows the embodiment of the message stream 900 using the emergency VoIP call of X.S0024 to arrange.In step 1, UE 110 finds and is attached to access network, sets up IP connectivity and can find local sip server (such as, P-CSCF 252), as described above for described by the step 1 in Fig. 5.After access network connects, UE 110 can use with known V-PLMN domain name and V-SLP identify that the DNS inquiry that (such as, xs0024_vps@domain_name) is carried out is sent out Existing V-PS address.

In step 2, SIP REGISTER is sent to P-CSCF 252, P-CSCF 252 and message is turned by UE 110 It is dealt into E-CSCF 254.In step 3, E-CSCF 254 is occurring SIP in the case of normal IMS registration REGISTER is forwarded to H-PLMN 160.In step 4, E-CSCF 254 is (such as, from H-PLMN 160 After receiving 200OK) 200OK returned to UE 110.If UE 110 cuts in same V-PLMN Nei Yue district Change to different PCF, PDSN or WLAN, then UE 110 can re-registration.

In the alternate embodiment of step 2,3 and 4, SIP REGISTER is sent to P-CSCF by UE 110 in step 2 After 252, the S-CSCF 264 that SIP REGISTER can be forwarded directly in H-PLMN 160 by P-CSCF 252 Or I-CSCF 262 walk around the E-CSCF 254 in V-PLMN 130.In the case, from H-PLMN 160 SIP 200 OK will return to P-CSCF 252 and not return to E-CSCF 254, and in step 4, P-CSCF 252 200 OK will be returned to UE 110.To P-CSCF 252, this alternate embodiment can be reduced or avoided supports that VoIP is urgent The Special Influence of calling, because the action of P-CSCF 252 is then as the action when normal registration.

In steps of 5, SIP INVITE is sent to P-CSCF 252 (not shown), P-CSCF 252 general by UE 110 SIP INVITE is forwarded to E-CSCF 254.In step 6, E-CSCF 254 can determine that UE 110 supports X.S0024 And the E-PS 282 that route requests is sent in identical or different network.Route requests can comprise above with respect in Fig. 5 Step 6 and the information that describes and V-PS address (if obtaining during registering).

If the positional information provided in step 6 makes E-PS 282 can derive the location estimation of sufficiently exact UE 110, So E-PS 282 proceeds to step 12.Otherwise, perform step 7 to 11 to estimate with the appropriate location obtaining UE 110. In step 7, E-PS 282 serves as H-PS, and use can support (if selecting V-PS) with for (a) X.S0024 roaming Or the program that the program of the non-roaming support of (b) X.S0024 (if non-selected V-PS) is similar to performs follow-up X.S0024 Location.E-PS 282 produces X.S0024SUPL TNIT to excite the finder of network initial to UE 110.E-PS 282 Can use mobile terminal IP or UDP/IP that SUPL INIT is sent directly to UE 110, skip step 8 in the case. SUPL INIT also can be sent to E-CSCF 254 inside instant message by E-PS 282.In either case, SUPL INIT all can comprise station-keeping mode, the QoP accuracy/delay estimated for quick centre position, E-PS IP address, tight Call on urgently and cry instruction etc..Any H-PS of configuration in any E-PS address equal override UE 110 passed in SUPL INIT Address.

In step 8, E-CSCF 254 uses IMS or SIP signaling to be forwarded by SUPL INIT via P-CSCF 252 To UE 110.In step 9, UE 110 is established to the safe IP of E-PS 282 and connects, and described E-PS 282 is permissible It is for the H-PS of UE 110 or may its IP address to be comprised in SUPL INIT in step 7.Then To can comprise the location estimation (if applicable) etc. of UE stationkeeping ability, the positional information of UE 110, UE 110 SUPL START is sent to E-PS 110a.If receiving from UE 110 in step 9 and there is enough accuracys with really Determine the location estimation of PSAP, then E-PS 282 may proceed to step 12 and by send SUPL END and terminate with The position transaction of UE 110.

In step 10, E-PS 282 is based on other position received in the positional information received in step 9 or step 6 Confidence breath determines suitable local PDE or the suitable remotely V-PS for performing location.E-PS 282 also determines to use generation Reason pattern or non-proxy mode.E-PS 282 then with V-PS or PDE alternately to carry out positioning and PDE IP can being comprised The X.S0024 SUPL RESPONSE of address is sent to UE 110 (if selecting non-proxy mode).In a step 11, UE 110 exchanges SUPL POS message with PDE in non-proxy mode or exchanges with E-PS 282 in proxy mode SUPL POS message is to continue and to complete the location as described in 3GPP2X.S0024-0.SUPL POS message can carry Embedded IS-801 message.Location provides the location estimation of UE 110, and it is passed to E-PS 282.

In step 12, E-PS 282 select PSAP (such as, PSAP 180) and obtain ESRD and ESRK (as Really PSAP 180 can use PSTN).In step 13, route response is returned to E-CSCF 254 by E-PS 282, described Route response can comprise PSAP mark (if PSAP 180 IP available), ESRD and ESRK (if PSAP 180 Available PSTN), and the location estimation (if E-CSCF 254 makes request) of UE 110.E-PS 282 can be UE The call record of all information that 110 storages are collected containing promising UE.If PSAP 180 IP available, then perform step 14a and 15a.If PSAP 180 can use PSTN, then perform step 14b, 14c and 15b.In step 16, After the call is established, PSAP 180 can will be sent to E-PS 282, described E-PS to the position requests of accurate location estimation 282 can be identified by the ESRK obtained in the IP address obtained in step 14a or title or step 14c.

In step 17, SUPL INIT can be directly transmitted by E-PS 282 by using mobile terminal IP or UDP/IP To UE 110 (in the case, skipping step 18) or by by containing have described in step 7 parameter (for Except QoP accuracy/delay that accurate location is estimated) the instant message of X.S0024 SUPL INIT be sent to E-CSCF The 254 new X.S0024 started with UE 110 conclude the business.In step 18, E-CSCF 254 IMS instant message, Inside sip message or other message a certain, SUPL INIT is delivered to UE 110.In step 19, UE 110 builds The IP of the vertical E-PS 282 of arrival connects (such as, safe IP connects) and SUPL START is returned to E-PS 282. E-PS 282 comes really based on any positional information in SUPL START and other positional information any based on UE 110 Fixed suitable PDE or V-PS for location.E-PS 282 then passes through and SUPL RESPONSE is returned to UE 110 And start location.UE 110 then can exchange SUPL POS message with E-PS 282, local PDE and/or long-range PDE To perform location and to obtain the accurate location estimation of UE 110.In step 20, E-PS 282 position respond in by UE The accurate location of 110 is estimated to be sent to PSAP 180.

UE 110 can communicate with PSAP 180 for emergency VoIP call subsequently.When sending calling subsequently, E-CSCF 254 E-PS 282, described E-PS 282 can be sent an indication to and then can send any record of calling.E-CSCF 254 or UE 110 also can the emergency public user ID of registration in logging-out step 2 to 4.Or, E-CSCF 254, E-PS 282 Registration and call record can be allowed to continue certain period with UE 110 may be subsequently from PSAP 180 to UE 110 with support Callback and/or additional positions request.

The step 1 to 8 of Fig. 9 can be described respectively about the step 1 to 8 of Fig. 5 and step 12 to 20 and step 12 arrives The additional detail of 20.

Message stream 500 has the following characteristics relevant with X.S0024.

A () adds E-PS address in X.S0024SUPL INIT, its override also replaces configuration in UE 110 or UIM H-PS address.

Interface between (b) IMS side (such as, E-CSCF 254) Yu side, position (such as, E-PS 282).

C () uses V-PS 284 and finds V-PS address.

D () uses mobile terminal IP, UDP/IP, SIP signaling or IMS signaling to pass on X.S0024SUPL INIT.

E () adds emergency services instruction in X.S0024SUPL INIT.

F () uses new agreement between E-CSCF 254 and E-PS 282, it can be similar to the LCS-z in X.S0024 OMARLP or PS-PS agreement on interface.

(g) safety.

4.Support without UICC/UIM and/or the UE of roaming agreement

Above description supposes that UE 110 has UICC or UIM and H-PLMN 160 and V-PLMN 130 has roaming Agreement, it is permitted the UE registration in V-PLMN 130 and accesses the subsequent emergency call of PSAP 180.If situation Really not so, then UE 110 can access in V-PLMN 130 and register and can complete to set the calling of PSAP 180 Put and the possible callback from PSAP 180, as described below.From PSAP 180 in the case of without UICC/UIM It is possible for carrying out callback for VoIP, but due to can not the reason of the unregistered UE of paging, generally for circuit switched Urgent access is impossible.

Figure 10 shows the net supporting emergency VoIP call setting and PSAP callback for the UE without UICC/UIM The block diagram of the embodiment of network framework 1000.The network architecture 1000 comprises some entities in the entity shown in Fig. 2 and 3. The network architecture 1000 also comprises location server 286, and it can be that other position of SLP, GMLC, PS or a certain is real Body.

4.1.Access

UE 110 can obtain GPRS access in the case of not having UICC, 3GPP WLAN accesses or IMS accesses. UE 110 also can obtain cdma2000 access in the case of not having UIM, 3GPP2WLAN accesses or IMS connects Enter.UE 110 can perform distinct program for different types of access.

Accessing for GPRS, UE 110 not having UICC and/or can not have the roaming agreement in V-PLMN 130 The PDP context activation for emergency services is performed in the case of (as described in 3GPP TR 23.867).Can use Pseudo-IMSI realizes GPRS attachment, and described pseudo-IMSI can register UE 110 in the HSS 250 in V-PLMN 130, This can help again to support the transfer between SGSN.If UE 110 does not have UICC, then available unique MCC-MNC Combination and the numeral from IMEI create pseudo-IMSI.If UE 110 has UICC but does not have V-PLMN 130 Roaming access, then the available numeral from IMSI rather than IMEI creates pseudo-IMSI, this can avoid use all The pseudo-IMSI of repetition is there will be during IMSI numeral.It is also possible to use IMEI and realize GPRS attachment as identifying.

3GPP WLAN is accessed, UE 110 can as follows according to pseudo-IMSI (such as, for GPRS be attached identical Pseudo-IMSI) the pseudo-NAI of establishment:

Pseudo-NAI=" n<pseudo-IMSI>@V-PLMN_network_domain "

Stationary digital in the range of wherein n is 2 to 9, its instruction has used not verifiable pseudo-NAI (for urgent call Take 0 or 1 for normal NAI).UE 110 can use pseudo-NAI for being initially accessed with AAA program.

WLAN can notice and for the pseudo-NAI of urgent call use to support the V-PLMN of AAA, or can be able to refer to Show that the order of priority of ability and wish that this makes support presents V-PLMN.UE 110 can be considered as by V-PLMN 130 Temporary home subscriber and can skip AAA or guarantee its success (such as, by use well-known key guarantee checking Success).May need follow normal procedure as far as possible and in HSS 250, register UE 110 preferably to support WLAN Reselect and transfer.

Accessing for cdma2000, UE 110 can set up the PPP session with PDSN 242, and can be by returning link Control protocol (LCP) configure-reject is refused during PPP sets up to reply from the LCP configuring request of PDSN 242 Checking, such as described in IETF RFC 1661.PDSN 242 can support the UE without UIM or invalidated Urgent call, and can in the case of not verifying UE 110 continue PPP session foundation.PDSN 242 can be by simple IP address be assigned to UE 110, and the entity that ip packet filter can communicate with UE 110 can be applied with restriction.For example, PDSN 242 can limit UE 110 and home server (such as, Dynamic Host Configuration Protocol server, dns server and P-CSCF 252) And with and PSAP access the entity communication that (but not open the Internet accesses) is associated.

Urgent call can be notified in a number of ways to PDSN 242.In one embodiment, UE 110 will be containing unique IP ground The IPCP configuring request of location is sent to PDSN 242, and described unique ip address defines through the overall situation with the IP of indicating emergency calling Address requests.In other embodiments, instruction can be used during PPP sets up, or can be via cdma2000A10 Interface receives the instruction of emergency call request from RAN (RRC/PCF 222).Under any circumstance, PDSN 242 can pin Simple IP address is assigned to by urgent call the UE of invalidated, and particular filter (as described above) can be used. This IP address is assigned and can be realized via the PPP IPCP strengthened described in IETF RFC 1332.If UE 110 does not refers to Show urgent call, then PDSN 242 can forbid that PPP sets up and IP address is assigned.

Replacement refuses inspection of books, and UE 110 can allow to use close described in the IETF RFC 1334 and RFC 1994 respectively Code indentification protocol (PAP) or challenge handshake authentication protocol (CHAP) proceed checking.UE 110 can receive CHAP Challenge or PAP checking are asked and can send the response comprising the mark indicating the urgent call from the UE without UIM.This Mark could be for the pseudo-IMSI that 3GPP2 WLAN accesses.If V-PLMN 130 is designated as UE 110 by mark Territory, then CHAP or PAP checking proceed to V-PLMN 130 with the normal mode from the perspective of PDSN 242 In aaa server 246.Pseudo-IMSI can be recognized as indicating emergency calling and access and can be just by aaa server 246 Often well-known key maybe can be used to perform checking before checking.It is limited that aaa server 246 can ensure that PDSN 242 uses Filtering and limit IP access, (such as) does not allow other type of access to allow emergency VoIP call.

PDSN 242 can build the NAI kept for charging and/or record.If UE 110 has UIM, then PDSN The 242 unique International identification (IMSI, MIN or international roaming MIN-IRM) that can use UE.PDSN 242 also may be used Use other identification of ESN or UE 110.

Accessing for 3GPP2 WLAN, after UE 110 accesses WLAN, access point or checking entity can initial pair The checking of UE 110 and extensible authentication protocol (EAP) request or other request a certain of the mark to UE 110 can be sent. UE 110 can by (such as) with the form of user@domain return EAP respond or mark containing UE a certain its Its response responds, and wherein said territory identifies the H-PLMN of UE 110.If UE 110 does not have UIM or not There is the roaming agreement in V-PLMN 130, then UE 110 can return to can be with the pseudo-NAI for 3GPP WLAN Same or similar pseudo-mark.For example, if UE 110 has UIM or additionally has from unique end ID (example Such as, ESN) numeral, then part can be containing the unique state from UE for the user (such as, pseudo-IMSI) of pseudo-mark The numeral on border mark (such as, IMSI, MIN or IRM).User Part also can containing unique prefix (such as, uniquely Numeral) to indicate that it is the pseudo-mark for urgent call.The territory part of pseudo-mark may indicate that V-PLMN 130.

Access point or checking entity can use local aaa server (such as, aaa server 246) to continue checking. Checking can use well-known key to be normally carried out or can be truncated owing to not occurring really to verify.Once puppet has been verified, connects Access point or the router being associated just can use packet filtering to access to limit UE 110, as described above.

UE 110 can be accessed by WLAN, performs puppet checking and finds PDIF.UE 110 then can use pseudo-mark (such as) The NAI for cdma2000 UE-PIDF checking is replaced to identify itself to PDIF (or local aaa server). Pseudo-mark can be same or like with the puppet mark verified for WLAN.It is then used by local aaa server and uses Know that key realizes certain transparency to PDIF, and proceed (such as, as 3GPP2 X.P0028-200 retouches State) normal authentication and tunnel set up.Or, can block or exit checking.After checking, PDIF can use packet filtering Limit UE 110 to access.

WLAN can notice the V-PLMN that can support procedure above, or may indicate that this is made support ability and The order of priority of wish presents V-PLMN.

IMS is accessed, if UE 110 does not have UICC/UIM and/or do not has the roaming in V-PLMN 130 Agreement (as described in 3GPP TR 23.867 and 3GPP2 X.P0013-002A), then can skip SIP registration.This makes PSAP must can be carried out urgent call setting but not support callback.Or, UE 110 can be by sending containing V-PLMN The SIP REGISTER of domain name and urgent private user ID registers, and described SIP REGISTER can use V-PLMN domain name and pseudo-IMSI create.Will in E-CSCF 254 and HSS 250 this SIP REGISTER of identification But can be transparent for other entity.

Accreditation process then can be performed until and be conveyed to V-PLMN 130 from UE 110 by SIP REGISTER E-CSCF 254 (or other IMS service device).Do not perform the registration in H-PLMN 160, but E-CSCF 254 will be HSS 250 in V-PLMN 130 registers UE 110.HSS 250 can assign interim TEL URI and/or interim SIP URI (cluster in HSS 250) is as temporary Public User Identity.If signaling is on PSTN, then can In call setting, TEL URI is conveyed to PSAP 180, and SIP URI can be passed on for SIP call setting.As Really both V-PLMN 130 and UE 110 maintain IMS registration and IP connectivity and continue certain after urgent call terminates One period, then URI will realize from PSAP 180 callback.TEL URI and SIP URI due to normal permanent address Difference and be recognized as temporary address by PSAP 180, because it is not used in global recognition UE 110.HSS 250 can " block " The temporary address returned from the urgent call completed, and within a period of time, these addresses are not reassigned in order to avoid PSAP returns It is the UE being incorrectly routed to mistake.

PSAP callback can be supported in a number of ways.If UE 110 registers in H-PLMN 160, then from PSAP The callback of 180 can use SIP URI or the TEL URI public user identity of UE 110, and can initially be routed to H-PLMN 160, as described in 3GPP TS 23.228 or 3GPP2 X.P0013.For the PSAP of available SIP, SIP INVITE The I-CSCF 262 (the H-PLMN domain name in SIP URI based on UE) can being routed in H-PLMN 160.I-CSCF 262 can inquire the S-CSCF 264 in H-PLMN 160 to HSS 250, and then can route the call to S-CSCF 264.S-CSCF 264 then can route the call to the E-CSCF 254 in V-PLMN 130 based on previous log-on message Or P-CSCF 252.In the former case, E-CSCF 254 can be considered as P-CSCF by S-CSCF 264, and can be via P-CSCF 252 routes the call to UE 110.In the later case, P-CSCF 252 can route the call to UE 110. For the PSAP of available PSTN, H-PLMN can be routed the call to by PSTN by TEL URI based on UE 110 MGCF in 160.MGCF can carry out intermediary operation between PSTN and SIP signaling, and can be by SIP INVITE The I-CSCF 262 being sent in H-PLMN 160.From I-CSCF 262 be routed to the calling of UE 110 then will with The mode identical for the PSAP of available SIP continues.

If do not register in H-PLMN 160 UE 110 (such as, due to do not have UICC/UIM and/or do not have with The roaming agreement of V-PLMN 130), then the HSS 250 in V-PLMN 130 can register UE 110.HSS 250 Interim TEL URI or SIP URI public user identity can be assigned to UE 110.Then can be by the callback from PSAP It is routed to I-CSCF 256 (for the PSAP of available SIP) or MGCF 258 (for the PSAP of available PSTN), Without regard to H-PLMN 160.

4.2.Call setting

Figure 11 shows the embodiment of the message stream 1100 of the emergency VoIP call setting of the UE without UICC/UIM. Message stream 1100 can be used for 3GPP and controls plan-position, SUPL and X.S0024.

In step 1, UE 110 finds and is attached to access network, sets up IP connectivity and can find local SIP service Device (such as, P-CSCF 252), as described above.UE 110 can access for GPRS or cdma2000 and use Pseudo-IMSI, accesses for WLAN and uses pseudo-NAI, access for 3GPP2WLAN and use pseudo-mark.UE 110 Can use in the pseudo-mark (such as, pseudo-IMSI) HSS 250 in V-PLMN 130 and register.

In step 2, UE 110 attempts by SIP REGISTER is sent in step 1 P-CSCF 252 found And register in V-PLMN IMS network.For without UICC/UIM or without roaming, SIP REGISTER can comprise tightly UE IP address, use V-PLMN domain name and the pseudo-IMSI obtained in anxious service instruction, V-PLMN domain name, step 1 (for GPRS) or the pseudo-urgent private user ID identifying (for cdma2000) and create, and/or out of Memory. For re-registration, SIP REGISTER can further include the temporary Public User ID assigned in initial registration.Owing to depositing At emergency services instruction or urgent private user ID (V-PLMN 130 can be designated as home network for UE 110 by it), The E-CSCF 254 of the support emergency service call that SIP REGISTER is forwarded in consolidated network by P-CSCF 252.Institute The SIP REGISTER forwarded can comprise the positional information of UE 110.SIP REGISTER also can comprise V-SLP or SGSN address (for 3GPP) or V-SLP, PDSN or PIDF address (for 3GPP2).

In step 3, because the urgent private user ID of UE 110 is with reference to V-PLMN 130, so E-CSCF 254 (such as) Cx-put into/Cx-involves and log-on message is forwarded in (Cx-Put/Cx-Pull) HSS 250.In step 4 In, HSS 250 examine that the most registered urgent private user ID, such as UE 110 be the most registered or another UE whether Register with same private user ID.HSS 250 can use temporary Public User ID (if provided that) distinguish due to The reason of common UE entity numeral (such as, common IMEI or ESN numeral) and there is identical urgent private user ID UE, and distinguish initial registration (not assigning temporary Public User) and re-registration.For initial registration, HSS 250 deposits Store up urgent private user ID and E-CSCF address and appointment returns to the temporary Public User SIP URI of E-CSCF 254 And/or TEL URI.

In steps of 5,200OK is returned to UE 110 via P-CSCF 252 by E-CSCF 254.200 OK can wrap Containing the temporary Public User ID assigned by HSS 250.If UE 110 is handed over to difference in V-PLMN 130 SGSN (GPRS is accessed), different PCF or PDSN (cdma2000 is accessed), different WLAN (WLAN is accessed), then UE 110 can re-registration.In step 6, SIP INVITE is sent by UE 110 The overall SIP URL or TEL URI, required of indicating emergency calling can be comprised to P-CSCF 252, SIP INVITE The temporary Public User ID received in the type of emergency services and step 5 is not (if UE 110 has UICC/UIM And/or not there is the roaming to V-PLMN 130 access).SIP INVITE is forwarded to E-CSCF 254 by P-CSCF 252. In step 7, E-CSCF 254 PSAP routing iinformation to obtain calling mutual with location server 286 is (such as, PSAP SIP URI or ESRD and ESRK), as retouched for the step 6 to 13 of Fig. 5 and the step 9 to 13 of Fig. 7 State.

If PSAP 180 IP available, then perform step 8a and 9a.In step 8a, E-CSCF 254 uses SIP SIP INVITE is routed to PSAP 180 by URI.SIP INVITE can comprise UE 110 any centre position estimate, The IP address of location server 286 or title, and it is assigned to the temporary Public User SIP URI of UE 110.In step In 9a, commutative extra SIP signaling is to set up urgent call.

If PSAP 180 can use PSTN, then perform step 8b, 8c and 9b.In step 8b, E-CSCF 254 SIP INVITE is forwarded to MGCF 258 via BGCF.SIP INVITE can comprise ESRD and ESRK and possibility Comprise the temporary Public User TEL URI being assigned to UE 110.In step 8c, MGCF 258 uses SS7ISUP And/or calling may be routed to PSAP 180 via selective router on PSTN by mf signaling.ESRD or ESRK As routing number, and ESRK be passed to PSAP 180 as the mark of UE 110 and as key to obtain more letters Breath.If signalling capability allows, then E.164 temporary Public User number also can be delivered to PSAP 180.E.164 it is boundary Determine the ITU-T standard of overseas call numbering system, and E.164 number be made up of plus domestic number country code.In step 9b In, commutative extra SIP signaling, and can occur at MGCF 258 with SS7 ISUP and/or MF carry out mutual Work is to set up calling.

In step 10, the position that PSAP 180 can be indicated by SIP URI or ESRK by inquiry in call setting Put server 286 to estimate to the accurate location obtaining UE 110.If if PSAP 180 can exist by PSTN and this number Call setting is not transferred to PSAP 180, then the response from location server 286 can comprise any interim commons E.164 number family.Can send over time calling (reason of temporary loss that such as, covers due to radio and fall Line).E-CSCF 254 then can wait for a period of time to support PSAP 180 pin before notice location server 286 UE 110 is positioned by follow-up callback.

PSAP 180 attempts to use its temporary Public User ID to carry out callback UE 110.PSAP for available SIP performs Step 11a.In step 11a, SIP INVITE is sent to I-CSCF 258, described I-CSCF 258 by PSAP 180 Can be by the net territory part instruction of the temporary Public User SEP URI being assigned to UE 110.PSAP for available PSTN Perform step 11b and 11c.In step 11b, ISUP LAM (or MF call setting) is sent to by PSAP 180 MGCF 258, described MGCF 258 can by be assigned to the temporary Public User of UE 110 E.164 number in several leading number Word indicates.In step 11c, MGCF 258 is by containing by the E.164 number TEL URI built received in step 11b SIP INVITE be sent to I-CSCF 258.

In step 12, location interrogation is sent to HSS 250 by I-CSCF 258, and described location interrogation can comprise step 11a In the temporary Public User TEL URI that receives in the temporary Public User SEP URI that receives or step 11c.In step In rapid 13, HSS 250 finds that UE log-on message the address by E-CSCF 254 return to I-CSCF 258.In step In rapid 14, SIP INVITE is forwarded to E-CSCF 254 by I-CSCF 258.In step 15, E-CSCF 254 is fixed SIP INVITE is also sent to UE 110 via P-CSCF 252 by P-CSCF address, position.In step 16, calling sets Put and continue as in normal condition.

UE 110 can communicate with PSAP 180 subsequently.When sending calling after a while or send after calling sometime, E-CSCF 254 can send an indication to location server 286, and location server 286 then can send any note of calling Record.

5.Support traditional PSA P being geographically distant from

In some cases, V-PLMN and/or sip server (such as, E-CSCF 254) can be geographically-distant UE 110.In such cases, if PSTN does not support the access to long-range PSAP, then can not be via this locality MGCF routes the call to the PSAP of available PSTN.Hereafter can be used for solving these situations.

In one embodiment, urgent call is re-directed to different V-PLMN.In the process to SIP INVITE In early days, E-CSCF or location server (such as, E-SLP, GMLC etc.) can determine that calling should be re-directed to separately Call server in one network.It that case, contain the SIP 3xx of the SIP URI of preferred alternative server again Response (such as, 305 using agency) is guided to can return to UE 110.UE 110 then can reattempt as described above Calling order, if but still can use identical access network, then can skip access and IP connectivity program.If calling The program that arranges be performed until determine centre position estimate and/or correct PSAP (such as, ESRD, SIP URI or IP address), then these can be included in and reboot in response by E-CSCF.Information then can be included in by UE 110 Being sent in the SIP INVITE of new PLMN, this can be avoided the extra delay for obtaining identical information allowing not having PLMN is used in the case of the standby ability obtaining this information.Original E-CSCF can notify location server (such as, E-SLP Or GMLC), the call record of the most removable UE of described location server 110.

In another embodiment, E-CSCF forwards call to the sip server in another network (or consolidated network), It is closer to calling can preferably be forwarded the PSAP entered in PSTN.V-PLMN can continue to support previously described All functions, comprise positioning function and the support to the UE without UICC or UIM.The SIP INVITE forwarded can Comprise PSAP mark (such as, SIP URI or ESRD), the location server any ESRK assigned and for without UICC UE assign any temporary Public User ID.PSAP can continue the location server inquiry position in V-PLMN Information, and via H-PLMN, any callback can be sent to V-PLMN (for normal condition) or be directed to V-PLMN (in the case of without the UE of UICC).Continue to support that these functions in V-PLMN are avoided follow-up sip server Demand, and other network enabling greater number is supported forward service.

In another embodiment, (such as) this locality portability can be used in North America.Except returning ESRD and ESRK Outward, LRN (position routing number) can be returned to IMS network (example by location server (such as, E-SLP or GMLC) As, E-CSCF), described LRN is corresponding to LEC exchange or can be directly to reach the PSAP selective router of PSAP. As an alternative, IMS network (such as, E-CSCF or MGCF) can obtain LRN from ESRD.LRN is included in and sends out Deliver to (if not obtained by MGCF) in the information of MGCF, and MGCF is by the ISUP IAM containing following parameter It is sent to PSTN:

Callee number=LRN,

Generic Address Parameter (GAP)=ESRD,

FCI parameter bit M is set as " number through translation ",

MPTY number=UE MSISDN or ESRK, and

The kind of MPTY is set as " emergency service call " (optional).

Due to PSTN support portability (such as, in the whole U.S.), if so SS7 can be used in whole country Rather than MF main line, then calling (ISUP IAM) can be properly routed to set LEC CO or selective router. Destination LEC CO or selective router can the number of support portability and when receiving calling, LRN can be recognized as its from Body, and real called party number (ESRD) can be obtained from GAP.The category setting of ESRD or MPTY unique Property can notify LEC CO or selective router, and this is urgent call.At described point, calling can be routed to PSAP, imitative Buddhist is as it is derived from this locality.This embodiment avoids the new impact on PSTN toll switch (such as, without route change) But LEC CO and selective router may be affected.

6.The safety of SUPL and X.S0024

For SUPL, security procedure can be set up to support that E-SLP 272 replaces H-SLP in roaming and non-roaming feelings Shape and agency or non-proxy mode position.Existing SUPL security procedure is typically based on UE 110 and H-SLP In shared key and/or based in UE 110 provide (such as, the most qualified territory of the out of Memory about H-SLP Name, root X.509 public-key certificate etc.).This information may be not useable for E-SLP 272.For E-SLP 272, can be such as Support described below is for agency and the checking of non-proxy mode.

For X.S0024, it is possible to set up security procedure to support that E-PS 282 replaces H-PS for positioning.3GPP2 Existing X.S0024 security procedure is described in X.S0024-0 and in 3GPP2S.P0110-0.These programs utilize to be used The common root key provided in the H-PS at family and in the UIM of user.Can derive extra as follows from the root key provided Key:

A () is used for supporting that safety stores and the key of forward direction encapsulation (S-SAFE), wherein use SMS or WAP Push SUPL INIT is sent to UE 110 empirical tests (as from H-PS) and is optionally encrypted.

B key that () is connected for supporting the safe IP between UE 110 and H-PS, wherein at UE 110 and H-PS Between send X.S0024 message be encrypted and verify.

C key that () is connected for supporting the safe IP between UE 110 and PDE for non-proxy mode, wherein at UE Send X.S0024 message between 110 and PDE and be encrypted and verify.

Each in above three key is fixing in the sense that any value of root key exists definitiveness value.But, Can derive additional keys from each of these fixed key to be used for encrypting and verifying, the value of described additional keys depends on pin The random number that the certain position session of UE Yu H-PS or PDE is provided.This key is derived and attaches security procedure profit With transport layer security (TLS) program described in IETF RFC 2246 and ietf draft " Pre-Shared Key Ciphersuites for Transport Layer Security (TLS) " described in the PSK-TLS version of this program. If X.S0024 is used for the location in emergency VoIP call and E-PS 282 is not H-PS, then UE 110 and E-PS 282 No longer possible in Liang Zhe depend on the common root key being pre-configured with and verify mutually and encrypt.

E-SLP 272 be can verify that for SUPL, UE 110 so as not to even during urgent call to UE position without awarding Power accesses.Can perform to verify mutually for X.S0024, UE 110 and E-PS 282.Table 2 enumerates five kinds of verification method (tables It is shown as method A, B, C, D and E) and the characteristic of every kind of method.

Table 2-verification method

Characteristic	Method A	Method B	Method C	Method D	Method E
						Checking E-SLP	No	It is	It is	It is	It is
Checking UE	No	Limited	It is	It is	It is
						Support roaming	It is	It is	It is	It is	No
H-PLMN affects	No	No	No	It is	It is
						Safe UE to required IMS connects	No	No	It is	No	No
Support without UICC/UIM	It is	It is (note 1)	Limited	No	No

Note 1: assuming that public keys root certificate is provided in mobile device (ME).

Method A provides minimum checking.If the position of SUPL EMIT message indicating emergency session and UE 110 currently join With in emergent session, then UE 110 allow the network initial from non-authentication E-SLP or E-PS SUPL or X.S0024 position.Restriction for emergent session provides certain to protect.Can be by with E-SLP for SUPL, UE 110 272 call security procedure carrys out system of selection A.In the case, E-SLP 272 still can be by wrapping in SUPL POS INIT The SUPL INIT hash code contained examines UE mark on limited extent.It addition, provided E-SLP by E-CSCF 254 The IP address of the UE 110 of 272 can provide certain that identify correct UE to be further ensured that.For X.S0024 and SUPL, Via IMS or SIP (if not using the direct transmission via mobile terminal IP or UDP/IP) transmission SUPL INIT Certain extra credit can be provided, because IMS and SIP transitive dependency is in from V-PLMN 130 in terms of UE verity And/or the support of H-PLMN 160 and examining.

Method B is verified for TLS public keys.UE 110 and E-SLP 272 or E-PS 282 supports to use such as IETF TLS described in RFC 2246 and also such as OMA SUPL 1.0 " Secure User Plane Location Architecture " described in substituting client authentication mechanisms carry out public keys checking.This mechanism is supported by UE Use TLS and during TLS handshake phase, be sent to the ITU X.509 public keys of UE by H-SLP or E-PS H-SLP or E-PS verified by certificate.Public-key certificate provides digital signature chain, next signature of each signature verification, makes If UE possessed at least one root prove authorized organization public keys, UE can verify that the public affairs of H-SLP or E-PS Key altogether.Public keys checking TLS program support for signaling follow-up encryption and checking in (such as, for follow-up SUPL Message) the transmission of symmetric key.Also can with these keys or by from these keys derive additional keys support pin To the checking between the UE 110 and SPC or PDE of non-proxy mode and encryption.Method B depends on by one or one Individual above root proves that authorized organization's (such as, OMA defining) proves E-SLP or E-PS public keys and supporting Key is provided in the UE of SUPL or X.S0024 of emergency VoIP call.This guarantees to be verified E-SLP by UE 110 272 or E-PS 282, and for SUPL, by E-SLP 272 via that SUPL POS INIT comprises and by UE 110 64 the SUPL INIT hash being sent to E-SLP 272 limitedly verify UE 110.

For method B, UE 110 (such as, UICC or UIM) can possess enable UE examine E-SLP 272 or One or more root public-key certificate of the public keys of E-PS 282.UE 110 and E-SLP 272 or E-PS 282 The TLS program described in RFC 2246 and one or more safe public keys transmission procedures can be used (such as, RSA, DSS or Diffie-Hellman) set up shared encryption key and Message Authentication Code (MAC) key.Can be Set up encryption and the checking performing SUPL or X.S0024 message after safe TLS connects.For non-proxy mode, SUPL The method defined for 3GPP2 non-proxy mode in 1.0 can be used for according to UE in SUPL 110 and V-SPC or H-SPC Between or X.S0024 in IETF PSK-TLS between UE 110 and PDE produce for checking and encryption shared close Key.

Method C is verified for PSK-TLS.UE 110 and E-SLP 272 or E-PS 282 is according to ietf draft (such as, " Pre-Shared Key Ciphersuites for Transport Layer Security (TLS) " support PSK-TLS As in SUPL 1.0 for described by 3GPP2 SET or 3GPP2 X.S0024-0 and S.P0110-0).Can be from following letter Breath produces pre-shared key (PSK): (a) is by UE 110, IMS network (such as, E-CSCF 254) and/or E-SLP 272 or E-PS 282 information be given (such as, random information), (b) during SIP sets up urgent call by UE 110 Send or be sent to the information (such as, SIP parameter) of UE 110, (c) Already in P-CSCF 252 and UE 110 In in order to support that the safe IMS from UE 110 accesses the safety of (such as, use Ipsec, PSK-TLS, TLS) Information, and/or (d) out of Memory.If UE 110 registers to H-PLMN IMS network via V-PLMN 130, So safety information in (c) is probably available.

PSK or can be by UE during the initial of SIP registration and/or SIP urgent call for deriving the information of PSK can be made 110 and E-SLP 272 or E-PS 282 use, and PSK-TLS can be used to make described PSK or for deriving PSK's Information positions for SUPL or X.S0024.The trust registered and set up during SIP call setting between these entities Relation is for obtaining the safe PSK or common information that can be used for deriving safe key.For SUPL, then, UE is worked as At the IP (PSK-TLS) that SUPL INIT is established to after E-SLP 272 is delivered to UE 110 E-SLP 272 During connection, PSK-TLS can be used to support the mutual checking of UE 110 and E-SLP 272.For X.S0024, can use Safe PSK is as the root key that can derive residue safety information as described in 3GPP2X.S0024-0 and S.P0110-0.

Method C depends on the secure connection between SIP registration and/or SIP call setting period UE 110 and IMS, its Imply registration UE 110 and UE 110 in V-PLMN 130 and H-PLMN 160 mutual with V-PLMN 130 Checking.If if UE 110 do not have do not exist between UICC/UIM or V-PLMN 130 and H-PLMN 160 unrestrained Trip agreement, then the mutual checking of V-PLMN 130 and UE 110 can not be realized during SIP registration and SIP call setting And securely transmitting between them, and produced any PSK is by protection relatively limited for offer.

Method D is for the Generic Bootstrap described in 3GPP TS 33.220 or 3GPP2TSG-S draft S.P0109 Framework (GBA) is verified.UE 110 and E-SLP 272 or E-PS 282 supports GBA.This makes UE 110 He E-SLP 272 or E-PS 282 can obtain secure common key from H-PLMN 160.For SUPL, this key can be used In supporting that the PSK-TLS between UE 110 and E-SLP 272 verifies mutually, such as 3GPP TS 33.222 or 3GPP2 Described in TSG-S draft S.P0114.The method is used in SUPL 1.0 to support 3GPP proxy mode.Described close Key can be additionally used in use HTTP Digest Authentication (such as, as described in 3GPP TS 33.222) and supports TLS, simply HTTP Digest Authentication between UE 110 and E-SLP 272 is (such as, such as institute in 3GPP2 TSG-S draft S.P0114 Describe) or the checking of other form.For X.S0024, this key can be used as the root that can be used for deriving residue safety information Key.

Method D depend on support in H-PLMN 160 and V-PLMN 130 GBA and V-PLMN 130 with Roaming agreement between H-PLMN 160, enable to by key information from H-PLMN 160 bootstrap clothes The E-SLP network application function (NAF) that business function (BSF) is delivered in V-PLMN 130.

Method E is verified for SUPL 1.0 or X.S0024.For SUPL, if UE 110 is at H-PLMN 160 In, then E-SLP 272 can be H-SLP, and can use the existing authentication mechanism defined in SUPL 1.0.For X.S0024, if UE 110 is in H-PLMN 160, then E-PS 282 can be H-PS, and can use X.S0024 In the existing authentication mechanism that defines.

Figure 12 shows the block diagram of the embodiment of UE 110, access network 120, E-CSCF 254 and location server 286. Location server 286 can be E-SLP 272, GMLC 276, E-PS 282 and/or other entity a certain.In order to simply For the sake of, Figure 12 shows 1210, the memory cell 1212 of only one processor for UE 110 and a transmitting-receiving Device 1214；Only one processor 1222, transceiver of 1220, memory cell for access network 120 1224 communicate with one (Comm) unit 1226；Only one processor 1230, one for E-CSCF 254 is deposited Storage unit 1232 and a communication unit 1234；And for location server 286 only one processor 1240, One memory cell 1242 and a communication unit 1244.In general, each entity can comprise any number of place Reason device, memory cell, transceiver, communication unit, controller etc..

On the uplink, business datum, signaling and pilot transmission are arrived by the base station in access network 120 and/or access point UE in its overlay area.These various types of data are processed by processor 1220 and are regulated to produce by transceiver 1224 Giving birth to downlink signal, described down link signal is via antenna transmission.At UE 110, from base station and/or access The down link signal of point is received via antenna, transceiver 1214 regulate and processed to obtain each by processor 1210 Type for positioning, VoIP and the information of other service.For example, processor 1210 can be to for above-mentioned message The message of stream is decoded.Memory cell 1212 and 1222 is separately stored for the journey of UE 110 and access network 120 Sequence code and data.On uplink, UE 110 is by business datum, signaling and pilot transmission to access network 120 Base station and/or access point.These various types of data are processed by processor 1210 and are regulated to produce by transceiver 1214 Raw uplink signal, described uplink signal is via UE antenna transmission.At access network 120, from UE 110 Received with the uplink signal of other UE by transceiver 1224 and regulate, and by processor 1220 process further with Obtain various types of information (such as, data, signaling, report etc.).Access network 120 is via communication unit 1226 With E-CSCF 254 and other entity communication.

In E-CSCF 254, processor 1230 performs process for E-CSCF, and memory cell 1232 is E-CSCF Store program code and data, and communication unit 1234 allows E-CSCF and other entity communication.Processor 1230 can It is that E-CSCF 254 performs process for above-mentioned message stream.

In location server 286, processor 1240 performs position and/or localization process, memorizer for location server Unit 1242 is location server storage program code and data, and communication unit 1244 allow location server and other Entity communication.Processor 1240 can be that location server performs process for above-mentioned message stream.

Technique described herein can be implemented by various means.For example, these technology may be implemented in hardware, firmware, In software or a combination thereof.For hardware embodiments, may be implemented in one or one for performing the processing unit of described technology Individual above special IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), Programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, Wei Chu In reason device, electronic installation, other electronic unit being designed to execution functions described herein or a combination thereof.

For firmware and/or Software implementations, described technology can be by module (such as, the journey performing functions described herein Sequence, function etc.) implement.Firmware and/or software code be storable in memorizer (such as, the memorizer 1212 in Figure 12, 1222,1232 and/or 1242) in and by processor (such as, processor 1210,1220,1230 and/or 1240) Perform.In memorizer may be implemented in processor or outside processor.

Comprise title herein for reference and for the specific paragraph of auxiliary positioning.These titles are not intended to limit institute below The scope of concept described, and these concepts can be applied in other paragraph throughout the specification.

Being previously described so that those skilled in the art can make or use this disclosed embodiment is provided Bright.Those skilled in the art will readily appreciate that the various amendments to these embodiments, and generic principles defined herein Other embodiments can be applied in the case of without departing from the spirit or scope of the present invention.And it is therefore not desirable to the present invention is limited to Embodiments shown herein, but the present invention should meet the most extensive model consistent with principle disclosed herein and novel feature Enclose.

Claims

1. for the method supporting Internet voice protocol urgent call, comprising:

Access 3GPP access network；

The request setting up the calling of urgent Internet voice protocol is sent to 3GPP core network；

Registration is performed to home network；

The primary importance obtaining subscriber equipment with location server alternately is estimated；And

Perform call setting via described 3GPP core network to set up described with public safety answering point Urgent internet voice protocol calling, described public safety answering point is by described location server base Estimate in described primary importance and select.

Method the most according to claim 1, farther includes to use according to safety with described location server Plan-position, family SUPL or 3GPP controls plan-position and performs location.

Method the most according to claim 1, farther includes to perform by the network selection accessed The checking of described location server.

Method the most according to claim 1, farther includes:

Asking of the estimation of the updated location to described subscriber equipment is received from described public safety answering point Ask；

Perform location with described location server and obtain the estimation of described updated location；And

Estimate to be sent to described public safety answering point by described updated location.

Method the most according to claim 1, farther includes:

Receive message from described location server to process and at described message indicating emergency with initial position When the position of calling processes and described subscriber equipment participates in the calling of described urgent internet voice protocol Verify described location server.

Method the most according to claim 1, farther includes to use and is stored at described subscriber equipment The public keys that root public-key certificate examines described location server is public to perform Transport Layer Security Key authentication altogether.

Method the most according to claim 1, farther includes:

At network based on described subscriber equipment and access can safety information to produce pre-shared close Key；And

Described pre-shared key is used to perform checking.

Method the most according to claim 1, farther includes to perform based on Generic Bootstrap Architecture Checking.

Method the most according to claim 1, farther includes according to secure user plane location version 1.0 perform checking.

Method the most according to claim 1, farther includes:

Receive and estimated by the updated location to described subscriber equipment of described public safety answering point initial The request of meter；

There is provided and the described updated location being sent back to described public safety answering point is estimated.

11. 1 kinds of equipment being used for supporting the method for Internet voice protocol urgent call, comprising:

For accessing the device of 3GPP access network with subscriber equipment；

For sending the dress of the request setting up the calling of urgent internet voice protocol to 3GPP core network Put；

For performing the device of registration to home network；

For obtaining the device that the primary importance of described subscriber equipment is estimated alternately with location server； And

To set up with public safety answering point for performing call setting via described 3GPP core network The device of described urgent internet voice protocol calling, described public safety answering point is by institute's rheme Put server to estimate based on described primary importance and select.

12. equipment according to claim 11, it farther includes:

For controlling flat according to secure user plane location SUPL or 3GPP with described location server Position, face performs the device of location.

13. equipment according to claim 11, it farther includes:

For performing the device of the checking to the described location server selected by the network accessed.

14. equipment according to claim 11, farther include:

Estimate for receiving the updated location to described subscriber equipment from described public safety answering point The device of request；

The device that described updated location is estimated is obtained for performing location with described location server； And

For described updated location is estimated to be sent to the device of described public safety answering point.

15. equipment according to claim 11, it farther includes:

Process with initial position for receiving message from described location server and indicate in described message The position of urgent call processes and described subscriber equipment participates in described urgent internet voice protocol and exhales The device of described location server is verified when crying.

16. equipment according to claim 11, it farther includes:

It is stored in the root public-key certificate at described subscriber equipment for use and examines described position clothes The public keys of business device performs the device of Transport Layer Security public keys checking.

17. equipment according to claim 11, it farther includes:

At network based on described subscriber equipment and access can safety information produce pre-common With the device of key；And

For using described pre-shared key to perform the device of checking.

18. equipment according to claim 11, it farther includes:

For performing the device of checking based on Generic Bootstrap Architecture.

19. equipment according to claim 11, it farther includes:

For performing the device of checking according to secure user plane location version 1.0.

20. equipment according to claim 11, it farther includes:

For receiving by the updated position to described subscriber equipment of described public safety answering point initial Put the device of the request of estimation；

The device that described updated location is estimated is obtained for performing location with location server；And For providing the device described updated location being sent back to described public safety answering point estimated.