CN100433896C - Urgent calling method capable of rapid positioning - Google Patents
Urgent calling method capable of rapid positioning Download PDFInfo
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- CN100433896C CN100433896C CNB2004100987429A CN200410098742A CN100433896C CN 100433896 C CN100433896 C CN 100433896C CN B2004100987429 A CNB2004100987429 A CN B2004100987429A CN 200410098742 A CN200410098742 A CN 200410098742A CN 100433896 C CN100433896 C CN 100433896C
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Abstract
The present invention discloses an emergency call method with rapid positioning, which comprises: a mobile station sends an emergency call request message with position measurement information to a radio network controller, the radio network controller forwards the emergency call request message to a mobile exchange center, the mobile exchange center builds an emergency call between the mobile station and an emergency help center according to the emergency call request message, and positions the mobile station at the same time. The position measurement information is the measuring result of SFN-SFN observation time difference which is the arriving time difference of signals sent by two base station subareas and received by the mobile station after the radio network controller sends measurement control information with common frequency via a subarea system information broadcast. Because the mobile station sends the emergency call request message with the position measurement information to the radio network controller, the time of positioning the mobile station is shortened.
Description
Technical field
The present invention relates to broadband CDMA system, relate in particular to a kind of Emmergency call method capable of rapid positioning.
Background technology
Urgent call is that the user is at a kind of call business that needs to initiate under the situation of Emergency Assistance, because urgent call is for the importance of public safety, network has very high priority for the processing of urgent call, to guarantee that the user can connect corresponding Emergency Assistance center rapidly.In order to make the Emergency Assistance center carry out accurately quick scheduling according to user's present located position, network can be initiated position fixing process when setting up urgent call, determining user's position, and user position information is reported to the Emergency Assistance center immediately.
In the prior art, handle for emergency call location, 3GPP (3G (Third Generation) Moblie consensus standard) has provided the handling process of urgent location, as shown in Figure 1, below simple this emergency call location processing procedure of describing:
Step 1: travelling carriage is initiated the emergence call service request to radio network controller;
Step 2: radio network controller is transmitted to mobile switching centre with the emergence call service request of travelling carriage;
Step 3: process is set up in urgent call: under the control of mobile switching centre, and under the participation of radio network controller and travelling carriage, set up the calling at travelling carriage and Emergency Assistance center;
Step 4: mobile switching centre is to the Location Request of radio network controller initiation at this user;
Step 5: the position fixing process of travelling carriage: radio network controller is according to the parameter (as positioning accuracy, response time, results expression method) of Location Request, select suitable localization method (as A-GPS (network assistance GPS) Cell-ID/RTT (based on the localization method of sub-district) and OTDOA (observe and arrive the time difference)), and initiate corresponding location survey process according to selected localization method, to determine the position of travelling carriage;
Step 6: radio network controller is to the position of mobile switching centre's report of user;
Step 7: mobile switching centre reports the position message of travelling carriage, the position message of described travelling carriage to comprise the position of travelling carriage, urgent positioning mark to the running fix gateway, and the sign of Emergency Assistance center (location service client);
Step 8: the running fix gateway is determined the position message of the travelling carriage received;
Step 9: the running fix gateway provides the positional information of travelling carriage to the Emergency Assistance center;
Step 10: urgent call dispose procedure: after urgent call finishes, discharge this and call out shared resource.
In the process of whole emergency call location, (step 5) is a vital step to the position fixing process of wireless access network, also is a step more consuming time.Radio network controller need be initiated the location survey process of network and travelling carriage according to localization method respectively, and calculates the position of travelling carriage according to the location survey that receives report.
In order to shorten the time of emergency call location, the suggestion of 3GPP agreement is set up process (in step 3) in urgent call, start wireless access network position fixing process (step 5) can be saved some times to a certain extent, but still to expend the long period could positioning mobile station.
Summary of the invention
At the above-mentioned defective of prior art, the purpose of this invention is to provide a kind of Emmergency call method capable of rapid positioning, thereby shortened the time of positioning mobile station, can satisfy the business demand of urgent call better.
The present invention is achieved through the following technical solutions, and a kind of method for rapidly positioning of urgent call is provided.Described method comprises:
A, travelling carriage send the emergency call request message that has location measurement information to radio network controller;
B, radio network controller determine the position of travelling carriage according to described location measurement information, and with the emergency call request forwards to mobile switching centre;
C, mobile switching centre set up urgent call between travelling carriage and the Emergency Assistance center according to emergency call request message, and from the position that radio network controller obtains above-mentioned definite travelling carriage, send to the Emergency Assistance center.
Described location measurement information is SFN-SFN level difference measurements observing time, and described SFN-SFN level difference measurements observing time is that the time of advent of the signal that sends of the Serving cell that receives of travelling carriage and neighbor base station sub-district is poor.
Described SFN-SFN difference measurements observing time is after radio network controller issues the location survey parameter by system information of subdistricts broadcasting, the processing of being undertaken by travelling carriage.
Described step B also comprises: when receiving emergency call request message, then radio network controller is determined the position of travelling carriage according to location measurement information.
Among the described step C from the position that radio network controller obtains above-mentioned definite travelling carriage, the step that sends to the Emergency Assistance center specifically comprises:
C1, mobile switching centre send Location Request to radio network controller;
After C2, radio network controller were received Location Request, radio network controller sent to the position of determined travelling carriage mobile switching centre, mails to the Emergency Assistance center by mobile switching centre through the running fix gateway again.
Described step C2 also comprises: the running fix gateway sends to mobile switching centre and receives the location of mobile station acknowledge message.
After step C, also comprise: after urgent call finishes, discharge the shared resource of this urgent call.
According to the present invention, because position fixing process of the present invention is just to carry out SFN-SFN difference measurements observing time when travelling carriage is not also called out, when sending urgent call, SFN-SFN level difference measurements observing time is reported to radio network controller together, radio network controller will be set up SFN-SFN level difference measurements observing time that request message carries according to RRC, adopt OTDOA (observe and the arrive the time difference) localization method of standard to determine user's position.When wireless controller receives mobile switching centre's location request initiating, can be immediately the information of this travelling carriage be reported to mobile switching centre.Like this, just saved position fixing process, therefore can significantly shorten the time of whole emergency call location process as an independent process.
Description of drawings
Fig. 1 shows the message flow chart of the urgent call of prior art;
Fig. 2 shows the message flow chart of urgent call of the present invention.
Embodiment
Understand and realization the present invention the existing embodiments of the invention of describing in conjunction with the accompanying drawings for the ease of persons skilled in the art.
Basic thought of the present invention is: before Mobile Origination was called out, radio network controller issued the location survey parameter by system information of subdistricts broadcasting, and the control travelling carriage carries out SFN-SFN (System Frame Number) difference measurements observing time.When Mobile Origination is called out, at first can send radio resource control RRC (radio resource control) connection and set up request message by Reverse Access Channel (RACH), described RRC connection is set up request message and is had SFN-SFN level difference measurements observing time, radio network controller connects to set up according to user's RRC sets up the reason cell in the request message, judge whether to be urgent call, if urgent call, then radio network controller will connect according to RRC and set up SFN-SFN level difference measurements observing time that request message carries, the OTDOA of employing standard (observe and arrive the time difference) localization method is determined user's position, otherwise, carry out conventional treatment.At this moment, radio network controller just can report the position of travelling carriage immediately by positioning reporting after receiving the Location Request of mobile switching centre.
Below with reference to Fig. 2 urgent positioning flow of the present invention is described.
Step 1: radio network controller issues the location survey parameter by system information of subdistricts broadcasting, the control travelling carriage carries out SFN-SFN difference measurements observing time, and described SFN-SFN observed time difference is meant that the time of advent of the signal that send Serving cell that travelling carriage receives and neighbor base station sub-district is poor;
Step 2: travelling carriage is initiated the emergence call service request to radio network controller, and connects to set up at the RRC that reports and carry SFN-SFN level difference measurements observing time in the request message.Radio network controller connects to set up according to user's RRC sets up the reason cell in the request message, when setting up the reason cell and be urgent call, then radio network controller will be set up SFN-SFN level difference measurements observing time that request message carries according to RRC, adopt OTDOA (observe and the arrive the time difference) localization method of standard to determine the position of travelling carriage;
Step 3: radio network controller is transmitted to mobile switching centre with the emergence call service request of travelling carriage;
Step 4: process is set up in urgent call: under the control of mobile switching centre, and in the presence of radio network controller and travelling carriage, set up the calling between travelling carriage and the Emergency Assistance center;
Step 5: mobile switching centre is to the Location Request of radio network controller initiation at this travelling carriage;
Step 6: radio network controller reports the position of the travelling carriage that obtains in the step 2 immediately to mobile switching centre;
Step 7: mobile switching centre reports the position message of travelling carriage to the running fix gateway, comprises the position of travelling carriage, urgent positioning mark, and the sign of Emergency Assistance center (location service client);
Step 8: the running fix gateway sends the position message determine the travelling carriage received to mobile switching centre;
Step 9: the running fix gateway carries out after authentication etc. handles the position message of travelling carriage, and it is mail to the Emergency Assistance center, and handle it according to the position of travelling carriage and the reason of this emergent operation request at the Emergency Assistance center then;
Step 10: urgent call dispose procedure: after urgent call finishes, discharge this and call out shared resource.
According to the present invention, because position fixing process of the present invention is just to carry out SFN-SFN difference measurements observing time when travelling carriage is not also called out, when sending urgent call, SFN-SFN level difference measurements observing time is reported to radio network controller together, radio network controller will be set up SFN-SFN level difference measurements observing time that request message carries according to RRC, adopt OTDOA (observe and the arrive the time difference) localization method of standard to determine user's position.When wireless controller receives mobile switching centre's location request initiating, can be immediately the information of this travelling carriage be reported to mobile switching centre.Like this, just saved position fixing process (as the step 5) among Fig. 1, therefore can significantly have been shortened the time of whole emergency call location process as an independent process.
Though described the present invention by embodiment, those of ordinary skills know, without departing from the spirit and substance in the present invention, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.
Claims (6)
1. an Emmergency call method capable of rapid positioning is characterized in that, comprising:
A, travelling carriage send the emergency call request message that has location measurement information to radio network controller;
B, radio network controller determine the position of travelling carriage according to described location measurement information, and with the emergency call request forwards to mobile switching centre;
C, mobile switching centre set up urgent call between travelling carriage and the Emergency Assistance center according to emergency call request message, and from the position that radio network controller obtains above-mentioned definite travelling carriage, send to the Emergency Assistance center.
2, Emmergency call method capable of rapid positioning according to claim 1, it is characterized in that, described location measurement information is SFN-SFN level difference measurements observing time, and described SFN-SFN level difference measurements observing time is that the time of advent of the signal that sends of the Serving cell that receives of travelling carriage and neighbor base station sub-district is poor.
3. Emmergency call method capable of rapid positioning according to claim 2, it is characterized in that, described SFN-SFN difference measurements observing time is after radio network controller issues the location survey parameter by system information of subdistricts broadcasting, the processing of being undertaken by travelling carriage.
4. Emmergency call method capable of rapid positioning according to claim 1 is characterized in that, among the described step C from the position that radio network controller obtains above-mentioned definite travelling carriage, the step that sends to the Emergency Assistance center specifically comprises:
C1, mobile switching centre send Location Request to radio network controller;
After C2, radio network controller were received Location Request, radio network controller sent to the position of determined travelling carriage mobile switching centre, mails to the Emergency Assistance center by mobile switching centre through the running fix gateway again.
5, Emmergency call method capable of rapid positioning according to claim 4 is characterized in that, described step C2 also comprises: the running fix gateway sends to mobile switching centre and receives the location of mobile station acknowledge message.
6, Emmergency call method capable of rapid positioning according to claim 1 is characterized in that, also comprises after step C: after urgent call finishes, discharge the shared resource of this urgent call.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100987429A CN100433896C (en) | 2004-12-15 | 2004-12-15 | Urgent calling method capable of rapid positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100987429A CN100433896C (en) | 2004-12-15 | 2004-12-15 | Urgent calling method capable of rapid positioning |
Publications (2)
| Publication Number | Publication Date |
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| CN1791266A CN1791266A (en) | 2006-06-21 |
| CN100433896C true CN100433896C (en) | 2008-11-12 |
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| CNB2004100987429A Expired - Fee Related CN100433896C (en) | 2004-12-15 | 2004-12-15 | Urgent calling method capable of rapid positioning |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441011C (en) * | 2006-08-21 | 2008-12-03 | 中国移动通信集团公司 | Method of handling urgent call |
| GB0622454D0 (en) * | 2006-11-13 | 2006-12-20 | Siemens Ag | Emergency alert |
| CN101203046B (en) * | 2007-12-19 | 2010-12-15 | 华为技术有限公司 | Method, system for obtaining user place information and call receiving equipment |
| CN101547396B (en) * | 2008-03-24 | 2012-07-04 | 展讯通信（上海）有限公司 | Method for quickly reporting position in emergency calling process |
| US8103287B2 (en) | 2008-09-30 | 2012-01-24 | Apple Inc. | Methods and apparatus for resolving wireless signal components |
| CN101938727B (en) * | 2009-06-30 | 2015-06-03 | 中兴通讯股份有限公司 | Method and system for realizing emergency call |
| CN102036204B (en) * | 2009-09-24 | 2015-06-03 | 中兴通讯股份有限公司 | Method and system for realizing emergency location |
| CN104955009A (en) * | 2014-03-26 | 2015-09-30 | 阿尔卡特朗讯 | Emergency calling system and emergency calling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198914B1 (en) * | 1997-10-08 | 2001-03-06 | Takao Saegusa | Emergency call system |
| US6647267B1 (en) * | 1997-08-13 | 2003-11-11 | At&T Corp. | Cellular transmitter for automatically providing position location and emergency data |
| US20040081139A1 (en) * | 2001-01-12 | 2004-04-29 | Mark Beckmann | Emergency call signaling using mobile telecommunications devices |
-
2004
- 2004-12-15 CN CNB2004100987429A patent/CN100433896C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6647267B1 (en) * | 1997-08-13 | 2003-11-11 | At&T Corp. | Cellular transmitter for automatically providing position location and emergency data |
| US6198914B1 (en) * | 1997-10-08 | 2001-03-06 | Takao Saegusa | Emergency call system |
| US20040081139A1 (en) * | 2001-01-12 | 2004-04-29 | Mark Beckmann | Emergency call signaling using mobile telecommunications devices |
Non-Patent Citations (3)
| Title |
|---|
| 3GPP TS 23.271. 34-66，3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI,TTA, TTC). 2004 3GPP TS 25.302. 37-46，3GPP Organizational Partners (ARIB, CCSA, ETSI, T1, TTA,TTC). 2003 |
| 3GPP TS 23.271. 34-66，3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI,TTA, TTC). 2004 * |
| 3GPP TS 25.302. 37-46，3GPP Organizational Partners (ARIB, CCSA, ETSI, T1, TTA,TTC). 2003 * |
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| CN1791266A (en) | 2006-06-21 |
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Granted publication date: 20081112 Termination date: 20171215 |