CN100477824C - Emmergency log-on method of Internet protocol multimedia subsystem field - Google Patents
Emmergency log-on method of Internet protocol multimedia subsystem field Download PDFInfo
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- CN100477824C CN100477824C CNB2006100749557A CN200610074955A CN100477824C CN 100477824 C CN100477824 C CN 100477824C CN B2006100749557 A CNB2006100749557 A CN B2006100749557A CN 200610074955 A CN200610074955 A CN 200610074955A CN 100477824 C CN100477824 C CN 100477824C
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Abstract
The invention discloses an emergency registration method of IMS domain, including: pre-setting the derivative rules, by which, IMPU derives E-IMPU, and pre-configuring an IMPU with the format of TEL URI for each contracted UE in HSS. When detecting that users initiate the request of emergency session, UE derives E-IMPU by its preservative IMPU according to the rules, and brings E-IMPU and IMPI in the emergency registration request to send to HSS. Then in the corresponding relations between its preservative IMPI and IMPU with the format of TEL URI, HSS finds IMPU with the format of TEL URI. In this invention, HSS only need to preserve the correspondence between all IMPI contracted with UE and IMPU with the format of TEL URI, not to preserve the recessive registration collection linked with E-IMPU, greatly reducing searching scope. Moreover, without the need of preservation of the recessive registration collection, HSS saves storage space. UE needs not to maintain E-IMPU separately.
Description
Technical field
The present invention relates to the emergent session technical field, be specifically related to a kind of Emmergency log-on method of internet protocol multimedia subsystem domain.
Background technology
Subsystem of IP Multimedia System (IMS) the support IP multimedia service that to be third generation affiliate tissue (3GPP) propose at the R5 version, its core characteristics be adopt conversation initialization (SIP) agreement and with the independence that inserts.IMS be one in the multimedia control/calling controlling platform of grouping on (PS) territory, support conversation class and non-conversation class multimedia service are for the multimedia application in future provides a general business platform.
Urgent call is distinctive a kind of voice service function in the mobile communication system.Even be provided with the restriction exhalation and do not insert under the situation of subscriber identification module (SIM) at portable terminal, as long as in the zone that the mobile network covers, when the user dial some special numbers as: 110, after 119,120 etc., calling can forward corresponding EC to as police office, fire brigade, first-aid centre etc., thereby provides 24 hours emergency assistance services to the masses.The operation of whole system is finished by the common cooperation of emergency services such as telecom operators and public security, fire-fighting, hospital.
Under the conventional situation, urgent call all is to be placed in circuit (CS) territory, and along with the progressively IPization of network, the PS territory also begins progressively to support emergence call service, and utilizes the IMS system to do call signaling control for emergent session.Current, the emergence call service that utilizes the IMS territory to provide can abbreviate IMS urgent call (IMS-EMER) as.
User identity in the IMS network is called the public user identity of IMS (IMPU), and IMPU uses when IMS user's request and other telex networks.IMPU adopts SIP unified resource identifier (SIP URI) or phone unified resource identifier (TEL URI) form.
When UE detects the Client-initiated conversation request and is the emergent session request, no matter whether UE carried out registration in the IMS territory, promptly no matter whether UE is in registered state, and UE will initiate an Emmergency log-on to the IMS territory again, initiates urgent call after Emmergency log-on finishes again.Fig. 1 is the flow chart that existing UE initiates Emmergency log-on, and as shown in Figure 1, its concrete steps are as follows:
When step 101～102:UE detects conversation request that the user be about to initiate and will be the emergent session request, self urgent IMPU (E-IMPU) is carried in the Emmergency log-on request message by inserting CSCF (P-CSCF) sends to and inquire about CSCF (I-CSCF).
UE detects the user and is about to initiate the emergent session request, then begins to carry out the Emmergency log-on flow process.
E-IMPU is the public user identity of urgent IMS of UE, is used to initiate the Emmergency log-on request, and this E-IMPU can set when UE dispatches from the factory, or is kept among the SIM of UE
After step 103～104:I-CSCF receives this Emmergency log-on request message, obtain the address information of serving CSCF (S-CSCF), then this Emmergency log-on request message is transmitted to S-CSCF from home subscriber server (HSS).
After step 105:S-CSCF receives the Emmergency log-on request message, the E-IMPU that this Emmergency log-on request message is carried sends to HSS by registration notification message, HSS is in all recessive registered set of self preserving afterwards, search the associated recessive registered set of this E-IMPU, and this E-IMPU and the associated recessive registered set of this E-IMPU are returned to S-CSCF.
Because SIP only allows once to register an IMPU, if a user has more than an IMPU, then must be through repeatedly registration, this can take a long time.For addressing this problem, 3GPP has proposed the mechanism of a kind of once registrable a plurality of IMPU, and this mechanism is called " recessive registration ".This mechanism is set at a recessive registered set with a plurality of IMPU of being mutually related, and when IMPU registration in the recessive registered set, other IMPU in this recessiveness registered set is all registered simultaneously.Equally, when an IMPU in the recessive registered set was canceled, other IMPU in this recessiveness registered set was all nullified simultaneously.
HSS preserves associated recessive registered set of IMPU and the associated recessive registered set of E-IMPU.
The associated recessive registered set of E-IMPU comprises the IMPU of a TEL URI form.
Step 106:S-CSCF is carried at the E-IMPU that receives and the associated recessive registered set of E-IMPU in 200 response (OK) message and returns to UE by I-CSCF, P-CSCF, wherein, first element of privately owned related URI (P-Associated-URI) the message header formation of 200 response messages is the IMPU of TEL URI form.
Because EC may be arranged in the CS territory, therefore in the Emmergency log-on process, network side need distribute the IMPU of a TEL URI form to UE, with support EC by CS territory network as: public land switched telephone (PSTN) is called out UE.
For urgent call, it is most important that duration is set up in urgent call, it is concerning the safety of life, property etc., from said method as can be seen: after HSS receives E-IMPU, HSS must search the associated recessive registered set of described E-IMPU in associated recessive registered set and the associated recessive registered set of E-IMPU of IMPU of all signatory UE that self preserve, more for a long time, search procedure must take the more time at signatory UE, has prolonged urgent call and has set up duration.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of IMS Emmergency log-on method in territory, to reduce the time that Emmergency log-on was spent, sets up duration thereby reduce urgent call.
For achieving the above object, technical scheme of the present invention is achieved in that
The Emmergency log-on method in a kind of IMS territory, this method preestablish the derivation rule that is derived urgent IMPU by IMPU, and UE preserves this derivation rule, and be the IMPU that each signatory UE disposes a phone URI form in advance in HSS, comprising:
A, UE detect the user and initiate the emergent session request, and the derivation rule of preserving according to self derives urgent IMPU by the IMPU that self preserves, should urgent IMPU and private user identity (IMPI) be carried in the Emmergency log-on request and send to HSS;
After B, HSS receive the Emmergency log-on request, recognition feature according to the urgent IMPU that preserves in advance, identify urgent IMPU, according to described IMPI, in the corresponding relation of the IMPU of IMPI that self preserves and phone URI form, find the IMPU of phone URI form, the IMPU of this phone URI form is sent to UE.
Described UE preserves this derivation rule and comprises: UE will derive from rule and be kept in the subscriber identification module of UE.
Further comprise before the described steps A: UE carries out the common register flow path in IMS territory, obtains acquiescence IMPU from network side;
And the described UE of steps A derives urgent IMPU by the IMPU that self preserves and is: UE derives urgent IMPU by described acquiescence IMPU.
The described UE of steps A detects the user and initiates further to comprise after the emergent session request: UE selects an IMPU in the IMPU that self subscriber identification module is preserved,
And the described UE of steps A derives urgent IMPU by the IMPU that self preserves and is: UE derives urgent IMPU by described selected IMPU.
Further comprise after the described step B: UE is carried at the IMPU of phone URI form and sends to EC in the emergency call request.
The described HSS of step B sends to UE with the IMPU of this phone URI form and comprises: HSS sends to S-CSCF with the IMPU and the urgent IMPU of this phone URI form, and S-CSCF sends to UE with the IMPU of this phone URI form by P-CSCF.
The described HSS of step B further comprises after the IMPU of this phone URI form and urgent IMPU are sent to P-CSCF: P-CSCF preserves the IMPU of phone URI form and the incidence relation of urgent IMPU.
The described HSS of step B further comprises after the IMPU of phone URI form and urgent IMPU are sent to P-CSCF: P-CSCF is set at acquiescence IMPU with the IMPU of phone URI form.
Further comprise after the described step B: after P-CSCF receives the emergency call request of carrying urgent IMPU that UE sends, the urgent IMPU that carries according to this emergency call request, at the IMPU that self finds corresponding phone URI form, the IMPU of this phone URI form is carried at sends to EC in the emergency call request then.
Compared with prior art, among the present invention, HSS only need preserve the corresponding relation of the IMPU of the IMPI of all signatory UE and TELURI form, and need not to preserve the associated recessive registered set of E-IMPU, after HSS receives E-IMPU and IMPI, in the corresponding relation of the IMPU of described IMPI and TEL URI form, find the IMPU of TEL URI form, significantly reduced seek scope, thereby accelerated the Emmergency log-on flow process, promptly reduced urgent call and set up duration; Further, because HSS needn't preserve the associated recessive registered set of E-IMPU of signatory UE, so saved the memory space of HSS; And UE needn't safeguard E-IMPU separately.
Description of drawings
Fig. 1 is the flow chart that existing UE initiates Emmergency log-on;
Fig. 2 is the flow chart that UE provided by the invention initiates Emmergency log-on.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Fig. 2 is the flow chart that UE provided by the invention initiates Emmergency log-on, and as shown in Figure 2, its concrete steps are as follows:
Step 201: preestablish the derivation rule that derives E-IMPU by IMPU, and should derive from rule and be kept among the UE; Be the IMPU that each signatory UE distributes a TEL URI form in advance in HSS, and the IMPU that sets this TEL URI form can be associated and constitute recessive registered set with any one E-IMPU of signatory UE.
Derive from rule and set by operator, for example: the derivation rule can be set and E-IMPU can be obtained for before the domain name of IMPU, adding " emergency ", as: IMPU is: user1@operator.com, E-IMPU is: user1@emergency.operator.com.
Particularly, deriving from rule can be kept among the SIM of UE; HSS preserves the recognition feature of E-IMPU in advance, and for example: recognition feature can be: the domain name beginning is " emergency ".
The IMPU of TEL URI form is specifically designed to urgent call, and its concrete form is determined jointly by urgent call mechanism and carrier policy.For example: the IMPU of TEL URI form is: tel:+86-21-112-68644808, wherein 112 be used to represent that the IMPU of this TEL URI form is specifically designed to urgent call.
Step 202:UE detects the user and is about to initiate the emergent session request, according to the derivation rule of self preserving, an IMPU who is preserved by self derives an E-IMPU, this E-IMPU and private user identity (IMPI) is carried in the Emmergency log-on request message sends to P-CSCF.
Each signatory UE has and has only an IMPI, and IMPI is kept among the SIM of UE.
If UE is in registered state, when then UE finished according to register flow path, S-CSCF derived an E-IMPU to the acquiescence IMPU that self returns; If UE is in unregistered state, then UE derives an E-IMPU according to an IMPU who preserves among self SIM.
After step 203:P-CSCF receives the Emmergency log-on request message, transmit this Emmergency log-on request message to I-CSCF.
After step 204:I-CSCF receives this Emmergency log-on request message, carry out the user registration state querying flow, thereby obtain the address information of S-CSCF with HSS.
Step 205:I-CSCF transmits this Emmergency log-on request message to S-CSCF.
After step 206:S-CSCF receives this Emmergency log-on request message, send registration notification message to HSS, this registration notification message is carried E-IMPU and the IMPI that described Emmergency log-on request message carries, and is being carried out registration with this E-IMPU of notice HSS.
After step 207:HSS receives this registration notification message, the E-IMPU that carries according to this message, learn that UE is carrying out Emmergency log-on, the IMPI that carries according to this message then, in the corresponding relation of the IMPI of the signatory UE that self preserves and TEL URI form IMPU, find the IMPU of TEL URI form, the IMPU of this TEL URI form is returned to S-CSCF with E-IMPU.
Can find out that HSS only need discern E-IMPU,, not need the associated recessive registered set of additional maintenance E-IMPU to determine that UE is carrying out Emmergency log-on.
After step 208:S-CSCF receives the IMPU and E-IMPU of TEL URI form, return 200 response messages that indication is succeeded in registration by I-CSCF to P-CSCF, the IMPU and the E-IMPU that comprise TEL URI form in the P-Associated-URI formation of this 200 response message, wherein, first element of the P-Associated-URI formation of 200 response messages is the IMPU of TEL URI form.
After step 209:P-CSCF receives 200 response messages, set up the IMPU and the incidence relation of E-IMPU that also preserve the TEL URI form that comprises in the P-Associated-URI, and with the IMPU of TELURI form as giving tacit consent to IMPU.
P-CSCF can add default identification before the IMPU of TEL URI form, be the IMPU of TEL URI form to represent this IMPU.Acquiescence IMPU is used for the identity at emergent session sign UE.
Step 210:P-CSCF transmits this 200 response message to UE.
After step 211:UE receives 200 response messages, first element of preserving the P-Associated-URI formation promptly: the IMPU of TEL URI form.
UE as acquiescence IMPU, with when initiating urgent call subsequently, preferentially selects this acquiescence IMPU to come the indicating self identity IMPU of TEL URI form.
When UE initiates urgent call, the IMPU of TEL URI form can be carried in the emergency call request message and send to EC by P-CSCF; Perhaps, when UE initiates emergency call request, can be not the IMPU of TEL URI form be carried in the emergency call request message yet, send to P-CSCF in the emergency call request message and E-IMPU is carried at, after P-CSCF receives this emergency call request message, the E-IMPU that carries according to this emergency call request message, in the incidence relation of the IMPU of the TEL URI form of self preserving and E-IMPU, find the IMPU of corresponding TEL URI form, then with the E-IMPU in the IMPU replacement emergency call request message of this TEL URI form, emergency call request message after will replacing then sends to EC, to support EC by CS territory calling network UE.
The above only is process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, the Emmergency log-on method in a kind of internet protocol multimedia subsystem IMS territory, it is characterized in that, preestablish the derivation rule that derives urgent IMPU by the public user identity IMPU of IMS, and user terminal UE preserves this derivation rule, and be the IMPU of a phone unified resource identifiers, URIs form of each signatory UE configuration in advance in home subscriber server HSS, this method comprises:
A, UE detect the user and initiate the emergent session request, and the derivation rule of preserving according to self derives urgent IMPU by the IMPU that self preserves, should urgent IMPU and private user identity IMPI be carried in the Emmergency log-on request and send to HSS;
After B, HSS receive the Emmergency log-on request, recognition feature according to the urgent IMPU that preserves in advance, identify urgent IMPU, according to described IMPI, in the corresponding relation of the IMPU of IMPI that self preserves and phone URI form, find the IMPU of phone URI form, the IMPU of this phone URI form is sent to UE.
2, the method for claim 1 is characterized in that, described UE preserves this derivation rule and comprises: UE will derive from rule and be kept in the subscriber identification module of UE.
3, the method for claim 1 is characterized in that, further comprises before the described steps A: UE carries out the common register flow path in IMS territory, obtains acquiescence IMPU from network side;
And the described UE of steps A derives urgent IMPU by the IMPU that self preserves and is: UE derives urgent IMPU by described acquiescence IMPU.
4, the method for claim 1 is characterized in that, the described UE of steps A detects the user and initiates further to comprise after the emergent session request: UE selects an IMPU in the IMPU that self subscriber identification module is preserved,
And the described UE of steps A derives urgent IMPU by the IMPU that self preserves and is: UE derives urgent IMPU by described selected IMPU.
5, the method for claim 1 is characterized in that, further comprises after the described step B: UE is carried at the IMPU of phone URI form and sends to EC in the emergency call request.
6, the method for claim 1, it is characterized in that, the described HSS of step B sends to UE with the IMPU of this phone URI form and comprises: HSS sends to service call conversation control function S-CSCF with the IMPU and the urgent IMPU of this phone URI form, and S-CSCF sends to UE with the IMPU of this phone URI form by inserting CSCF P-CSCF.
7, method as claimed in claim 6 is characterized in that, the described HSS of step B further comprises after the IMPU of this phone URI form and urgent IMPU are sent to P-CSCF: P-CSCF preserves the IMPU of phone URI form and the incidence relation of urgent IMPU.
8, method as claimed in claim 7 is characterized in that, the described HSS of step B further comprises after the IMPU of phone URI form and urgent IMPU are sent to P-CSCF: P-CSCF is set at acquiescence IMPU with the IMPU of phone URI form.
9, method as claimed in claim 7, it is characterized in that, further comprise after the described step B: after P-CSCF receives the emergency call request of carrying urgent IMPU that UE sends, the urgent IMPU that carries according to this emergency call request, at the IMPU that self finds corresponding phone URI form, the IMPU of this phone URI form is carried at sends to EC in the emergency call request then.
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| JP5456708B2 (en) * | 2011-02-14 | 2014-04-02 | 株式会社Ｎｔｔドコモ | Mobile communication method and call session control node |
| CN104938001B (en) * | 2013-12-10 | 2019-04-12 | 华为终端有限公司 | A kind of register method and interdependent node and Accreditation System |
| CN114245327B (en) * | 2021-10-09 | 2023-01-31 | 展讯通信（上海）有限公司 | Method and device for establishing emergency call, vehicle-mounted mobile terminal and storage medium |
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